WO2000053648A1 - UTILISATION D'UN COPOLYMERE D'ETHYLENE/α-OLEFINE ET UTILISATION D'UNE COMPOSITION COPOLYMERE D'ETHYLENE - Google Patents
UTILISATION D'UN COPOLYMERE D'ETHYLENE/α-OLEFINE ET UTILISATION D'UNE COMPOSITION COPOLYMERE D'ETHYLENE Download PDFInfo
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- WO2000053648A1 WO2000053648A1 PCT/JP1999/001143 JP9901143W WO0053648A1 WO 2000053648 A1 WO2000053648 A1 WO 2000053648A1 JP 9901143 W JP9901143 W JP 9901143W WO 0053648 A1 WO0053648 A1 WO 0053648A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/441—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from alkenes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/30—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising olefins as the major constituent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/06—Metallocene or single site catalysts
Definitions
- the present invention relates to the use of an ethylene / ⁇ -olefin copolymer.
- the present invention also relates to the use of an ethylene copolymer composition having substantially the same composition and utility as the above ethylene copolymer.
- the present invention relates to the use of a composition of the above-mentioned ethylene ' ⁇ -olefin copolymer or ethylene copolymer and another ethylene copolymer.
- Ethylene-based copolymers are molded by various molding methods and are used for various purposes.
- the required properties of the ethylene copolymer differ depending on the molding method and application. For example, if an inflation film is to be molded at a high speed, an ethylene copolymer should be used to stably perform high-speed molding without bubble fluctuation or tearing. Therefore, one with a large melt tension (melt tension) must be selected for the molecular weight. Similar properties are necessary to prevent sagging or tearing in hollow molding, or to minimize the drop in width in die molding. ⁇
- ethylene polymers produced using a zigzag type catalyst among ethylene polymers obtained using a chromium catalyst, the melt tension is relatively high. However, further thermal stability was desired. Some ethylene-based copolymers obtained with an olefin polymerization catalyst containing a transition metal metallocene compound have a high melt tension and good thermal stability. Therefore, it is expected to meet the above demands.
- ethylene copolymers obtained Ri by the meta spout catalyst generally, main Le Totenshi ® emission (MT) and flow activation energy and (E a) it is proportional.
- the polymer having a large melt tension is excellent in moldability because of excellent bubble stability.
- the flow activity Kako panel formic one (E a) is high, the temperature dependency of the molding conditions and Conoco are means and Okiiko. For this reason, unless the molding conditions are controlled very strictly and uniformly, unevenness occurs in the obtained molded body. For example, in the case of a film, transparency may be reduced.
- the present invention has been made in view of the above situation, and is capable of producing films and molded articles having excellent transparency and mechanical strength, and has excellent moldability.
- 'An ethylene copolymer composition having substantially the same composition and utility as the purpose of providing the use of the ⁇ -olefin copolymer It is intended to provide the purpose of the use. Disclosure of the invention
- the molded articles such as the single-layer film or sheet, the multilayer film or sheet, the injection molded article, the extruded molded article, the fiber, the foam molded article, and the electric wire sheet according to the present invention are as follows.
- a copolymer of ethylene and an a-olefin having 6 to 8 carbon atoms is a copolymer of ethylene and an a-olefin having 6 to 8 carbon atoms
- an ethylene-olefin copolymer (A) is, for example,
- L 1 is a ligand coordinated to the transition metal atom M, and at least two ligand L 1 is Ri substituent consequent Ropentajeniru group der having one group also rather less that is selected from a hydrocarbon group having a carbon number of 3 to 1 0 -.
- ligands other than substituted Sik Ropentajeniru group L 1 is a hydrocarbon group having 1 to 12 carbon atoms, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom, and X is a valence of the transition metal M. is there.
- ⁇ is a transition metal atom selected from Group 4 of the periodic table
- L 2 is a ligand that coordinates to the transition metal atom
- at least two ligand L 2 is Mechirushiku Ropentajeniru group or Echiru shea click
- Ropen data Jeniru group der is, main Chirushi 'click Ropen data GETS Nirumotoma other Echirushiku Ropentajeniru ligand L 2 other than the group, the number of carbon atoms
- X is the valence of a transition metal atom.
- composition comprising
- the ratio between the melt flow rate (MFR (C)) of (C) and the melt flow rate (MFR (B)) of (B) is the ratio between the melt flow rate (MFR (C) and the melt flow rate (MFR (B)) of (B)
- This ethylene-based copolymer composition (A,) has substantially the same composition and utility as the above-mentioned ethylene.
- ( ⁇ ') indicates that the above ethylene-olefin copolymers ( ⁇ ) and (C) are both ethylene hexene-1 copolymers, and ( ⁇ '-i) 19 Melt tension (MT), melt edge rate (MFR) and force at 0 t:
- d indicates density (g Zcm 3 )
- MT indicates melt tension (g)
- C indicates the number of carbon atoms of hexene-1, that is, "6").
- the ethylene-based copolymer composition ( ⁇ ') further includes the above (A'-i) or (A'-iii),
- (D-i) The density is in the range of 0.850 to 0.980 g / cm 3 , and (D-ii) 135, the intrinsic viscosity [ ⁇ ] measured in decalin is 0.4. Ethylene in the range of ⁇ 8dlZg.
- An ethylene-a-olefin copolymer (A) and an ethylene- ⁇ -olefin copolymer (D) are blended with the ethylene- ⁇ -olefin copolymer (D) Copolymer composition ( ⁇ '''), ethylene copolymer composition ( ⁇ ''') of ethylene copolymer composition ( ⁇ ') and ethylene-olefin copolymer (D) It can be.
- polymerization is sometimes used to include not only homopolymerization but also copolymerization, and is also referred to as "polymer”.
- polymer is sometimes used to include not only homopolymers but also copolymers.
- the film, sheet, molded body, etc. according to the present invention are as follows:
- Ethylene ⁇ . -Refined copolymer ( ⁇ ) has ethylene and 6 to 8 carbon atoms. It is a random copolymer with -refin.
- ⁇ -olefin having 6 to 8 carbon atoms used for copolymerization with ethylene straight-chain non-branched unrefined olefins are preferred. Examples thereof include 1-hexene, 1-heptene and 1-octene, and hexene-1 is particularly preferably used.
- the -olefin copolymer ( ⁇ ) has the following properties (Ai) to (A-iii).
- the ethylene ' ⁇ -refin copolymer having such properties has a high melt tension ( ⁇ ) and therefore has good moldability.
- the MFR is measured under the conditions of 190 and 2.16 kg load according to ASTM D1238-65T.
- Melt tension is determined by measuring the stress when the molten polymer is stretched at a constant speed.
- the produced polymer powder is melted by a usual method and then pelletized to prepare a measurement sample.
- MT measuring device manufactured by Toyo Seiki Seisaku-sho, at a resin temperature of 190 and an extrusion speed of 15 mm / min, take-up speed of 10 to 2 OmZ, nozzle diameter of 2.09 mm, and nozzle length of 8 mm.
- the ethylene-olefin copolymer is preliminarily treated with tri (2,4-di-1-butylphenyl) phosphate as a secondary antioxidant.
- E a X10 "> (0.039Ln ( C-2) +0.1660) X x +2.87 of anything excellent in moldability, since the full I Lum strength Ya Fi Lum transparency deteriorates, preferred Not good.
- the measurement of the activation energy of flow (E a ) is described in, for example, “Polymer Experiments, Vol. 9, Thermodynamic Properties I (edited by the Society of Polymer Science, Editor of Polymer Experiments, Kyoritsu Shuppan Co., Ltd., 25- Ri All are in the second page 8) ", the viscoelastic frequency dependence was measured, the time - temperature superposition of the shift file from Selector Selector one flow activation energy one (E a) is obtained.
- the reference temperature (Thermal simplicity). It is obtained by plotting the amount log (aT) that shifts the data at each measurement temperature so that it can be superimposed on the reference temperature data against the reciprocal 1 ZT of the measurement temperature (absolute temperature). If the slope of the line is multiplied by 2.303R (R is the gas constant), the activation energy is obtained as a temperature-independent constant. Specifically, Ea is measured as follows.
- the angular velocity ( ⁇ (radZ second)) dispersion of the storage modulus (G '(dyne / cm 2 )) was measured using a Rheometer RDS-II manufactured by Rheometrics.
- the sample holder used a 25 mm parallel plate, and the sample thickness was about 2 mm.
- the measurement temperatures were 130, 170, 200, and 230, and G 'was measured at each temperature in the range of 0.04 ⁇ 400.
- the temperature was raised to 150, and the measurement was carried out at 130 before complete melting of the crystal.
- the amount of distortion was appropriately selected in the range of 2 to 25% so that the torque within the measurement range could be detected and the torque did not become inconsistent.
- Air flow 90 liters Z min
- extrusion rate 9 g Z min
- professional ratio 1.8
- take-off speed 2.4 min
- processing temperature 200
- thickness 30 ⁇ m film was manufactured by inflation molding and measured according to ASTM-D-103-61.
- the flow index (FI) is determined by extruding the resin from the cavity while changing the shear rate, and measuring the stress at that time. That is, using the same sample as MT measurement, manufactured by Toyo Seiki Seisakusho, using capillary type flow property tester, the resin temperature 1 9 0, the range of shear stress force f 5 X 1 0 4 ⁇ 3 X 1 0 6 dyne / It is measured in cm 2.
- the strand obtained during melt flow rate (MFR) measurement under a load of 2.16 kg at 190 was heat-treated at 120 for 1 hour, and then heated for 1 hour. After cooling to room temperature, measure with a density gradient tube.
- the ethylene.a-olefin copolymer (A) satisfies the following requirements in addition to the above requirements.
- the structural unit Ru derived from ethylene Les emissions' is 5 0-1 0 0 wt%, preferred properly 5 5-9 9 wt 0 / 0 , more preferably from 65 to 98% by weight, most preferably from 70 to 96% by weight, having from 6 to 8 carbon atoms.
- the constituent units derived from -olefins are 0 to 50% by weight, preferably 1 to 45% by weight, more preferably 2 to 35% by weight, particularly preferably 4 to 30% by weight. % Should be present.
- composition of the ethylene- ⁇ -refin copolymer is usually a sample in which about 20 mg of the copolymer is uniformly dissolved in lm 1 hexachlorobutadiene in a 10 mm sample tube.
- the 13C -NMR spectrum was measured at a measurement temperature of 120, a measurement frequency of 25.5 MHz, a spectrum width of 1500 Hz, a pulse repetition time of 4.2 sec., And a pulse width of Determined by measuring under the measurement conditions of 6 ⁇ sec.
- the density (d) of the -olefin copolymer ( ⁇ ) is 0.880 . 0. 9 7 0 g / cm 3, and rather than the preferred 0 8 8 0 0. 9 6 0 g / cm 3 good Ri preferred to rather than the 0.8 9 0 0.9 3 5 2 (: 111 3, Most preferably, it is in the range of 0.90 50.9 g / cm 3 .
- the melt flow rate ( ⁇ FR) of the ethylene ' ⁇ -refin copolymer (A) is 0.02208 / 10 minutes, preferably 0. Preferably, it is in the range of 0 550 0 £ / 10 minutes, more preferably 0.11 OgZ 10 minutes.
- n-decane-soluble component of ethylene-na-refin copolymer (the smaller the amount of soluble component, the narrower the composition distribution) was obtained by measuring about 3 of the copolymer with n-decane 4 Add 50 ml, dissolve with 144 X :, cool to 23, remove the n-decane insoluble part by filtration, and recover the n-decane soluble part from the filtrate. Is performed.
- the temperature (Tm) at the maximum peak position of the endothermic curve measured by a differential scanning calorimeter (DSC) was measured by packing about 5 mg of the sample into aluminum pan and raising the temperature to 200 at 10 / min. Then, the temperature is kept at 200 for 5 minutes, then the temperature is lowered to room temperature in 10 Z minutes, and then, it is determined from an endothermic curve when the temperature is raised in 10 minutes in Z minutes. For measurement, use a DSC-7 type device manufactured by PerkinElmer.
- an organoaluminoxy compound (bI) at least one transition metal compound selected from the transition metal compounds represented by the general formula (I), and (b-II) the general formula At least one transition metal compound selected from the transition metal compounds represented by (II) may be supported on (c) a carrier (hereinafter, such a supported catalyst is referred to as a supported catalyst).
- a supported catalyst such a supported catalyst is referred to as a supported catalyst).
- the organic aluminum oxy compound ( a ) may be a conventionally known benzene-soluble aluminoxane. It may be a benzene-insoluble organic aluminum oxy compound as disclosed in Japanese Patent No. 276807.
- the aluminoxane as described above can be produced, for example, by the following method, and is usually obtained as a hydrocarbon solution.
- the aluminoxane may contain a small amount of an organometallic component.
- the solvent or the unreacted organic aluminum compound may be removed from the recovered solution of aluminum oxane by distillation, and then redissolved in the solvent.
- organic aluminum compound used in the production of aluminoxane include trimethyl aluminum, triethyl aluminum, tripropyl aluminum, and tripropyl aluminum.
- isoprenyl aluminum represented by the following formula.
- Solvents used in the production of aluminoxane include aromatic hydrocarbons such as benzene, toluene, xylene, cumene, simene, pentane, hexane, heptane, octane, Aliphatic hydrocarbons such as decane, dodecane, hexadecane, and octadecane; fats such as cyclo ⁇ -pentane, cyclohexane, cyclooctane, methylcyclopentane Aliphatic hydrocarbons; petroleum fractions such as gasoline, kerosene, and gas oil, or halogenated compounds of the above aromatic hydrocarbons, aliphatic hydrocarbons, and alicyclic hydrocarbons (eg, chlorinated products, brominated products, etc.) Hydrocarbon solvents.
- aromatic hydrocarbons such as benzene, toluene,
- the A1 component soluble in 60 benzene is 10% or less, preferably 5% or less, particularly preferably 2% or less in terms of A1 atom. It is insoluble or hardly soluble in benzene.
- solubility of such an organic aluminum methoxy compound in benzene is the same as that of the organic aluminum compound corresponding to A 1 of 100 microgram atoms.
- the moxa compound was suspended in 100 ml of benzene, mixed at 60 with stirring for 6 hours, and then filtered using a G-5 glass filter with a jacket. After hot filtration, the solid part separated on the filter was washed four times with 50 ml of benzene at 60, and the total amount of A 1 atoms present in the total filtrate after being washed four times with 50 ml of benzene (60) X millimoles) (X%).
- the transition metal compound (bI) is a transition metal compound represented by the following general formula (I), and the transition metal compound (b-II) is a transition metal compound represented by the following general formula (II) .
- ⁇ is a transition metal atom selected from Group 4 of the periodic table
- L 1 is a ligand that coordinates to the transition metal atom ⁇
- at least two ligand L 1 is a ligand L 1 other than the substituted Sik Ropentajeniru group der Ri substituent consequent Ropentajeniru group having one group also rather less that is selected from a hydrocarbon group having a carbon number of 3 to 1 0
- X is a valence of a transition metal atom.
- L 2 is a ligand coordinated to the transition metal atom ⁇ , and at least two The ligand L 2 is a methylcyclopentagenenyl group or an ethylcyclopentenyl group, and is a methylcyclopentagenenyl group.
- transition metal compound represented by the general formula (I) or (II) will be described more specifically.
- M is a transition metal atom selected from Group 4 of the periodic table, specifically, zirconium, titanium or hafdium, preferably zirconium. .
- L 1 is a ligand coordinating to the transition metal atom M, and at least two of these ligands L 1 are a hydrocarbon group having 3 to 10 carbon atoms. It is a substituted cyclopentadienyl group having at least one substituent selected. These ligands L 1 may be different from one even each identical.
- the substituted cyclopentagenyl group may have two or more substituents, and the two or more substituents may be the same or different.
- at least one substituent may be a hydrocarbon group having 3 to 10 carbon atoms, and the other substituents are It is a methyl group, an ethyl group or a hydrocarbon group having 3 to 10 carbon atoms.
- hydrocarbon group having 3 to 10 carbon atoms include an alkyl group, a cycloalkyl group, an aryl group and an aralkyl group. More specifically, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, t-butyl, pentyl, Alkyl groups such as hexyl group, octyl group, 2-ethylhexyl group and decyl group; cycloalkyl groups such as cyclopentyl group and cyclohexyl group; aryl groups such as phenyl group and tolyl group Group: an aralkyl group such as a benzyl group or a neofil group;
- the substituted cyclopentagenenyl group coordinated to the transition metal is preferably a disubstituted cyclopentagenenyl group.
- 1,3-Substituted cyclopentapentaenyl groups are particularly preferred.
- the transition metal atom M ligand L 1 other than the coordinating location ⁇ consequent Rope printer Jeniru group, the hydrocarbon group having a carbon number of 1 to 2, alkoxy groups, ⁇ Li It is a xy group, a trialkylsilyl group, a halogen atom or a hydrogen atom.
- hydrocarbon group having 1 to 12 carbon atoms examples include an alkyl group, a cycloalkyl group, an aryl group, and an aralkyl group, and more specifically, methyl.
- Alkoxy groups include methoxy, ethoxy, ⁇ -propoxy, isopropoxy, ⁇ -butoxy, isobutoxy, sec-butoxy, t-butoxy, Examples include a bentoxy group, a hexoxy group, and an ethoxy group. Examples of the aryloxy group include a phenoxy group.
- trialkylsilyl group examples include a trimethylsilyl group, a triethylsilyl group, a triphenylsilyl group, and the like.
- Halogen atoms are fluorine, chlorine, bromine, and iodine.
- transition metal compound represented by the general formula (I) examples include bis (n-propylcyclopentenyl) zirconium dichloride and bis (n-butylcyclopentagenenyl) zirconium dichloro. Lido, bis (n-hexylcyclopentene genil) zirconium dichloride, pis (methyl-n-probicyclopropene tajenyl) zirconium dichloride, bis (methyl-n-butylcyclone) data Jeniru) zirconium Axis b Li, bis (dimethyl chill -n- Buchirushiku Ropen data Jeniru) Jill Koniu arm Axis b Li, bis (n - Buchirushi click Ropen data Jeniru) Jill Koniu beam jib port Mi, bis (n —Butylcyclopentene genil) zirconium methoxychloride, bis (n-butylcyclopentene) Genil) zir
- disubstituted cyclopentagenyl rings include 1,2- and 1,3-substituted forms, and tri-substituted forms include 1,2,3- and 1,2,4-substituted forms.
- a transition metal compound obtained by replacing the zirconium metal with a titanium metal or a hafnium metal in the zirconium compound as described above can be used.
- transition metal compounds represented by the general formula (I) bis (n-propylcyclopentagenenyl) zirconium dichloride, bis (n-butylcyclopentagenenyl) zirconium dichloride, bis (1-methan) Cyl-3-n-propylcyclopentagenenyl) zirconium dichloride and bis (1-methyl-3-n-butylcyclopentyl benzyl) dichlorodimethane chloride are particularly preferred.
- M is a transition metal atom selected from Group 4 of the periodic table, specifically, zirconium, titanium or hafnium, preferably zirconium.
- L 2 is Ri Ah in ligand coordinated to the transition metal atom M, 2 pieces of ligands L 2 also these caries Chi least Do rather refers Mechirushiku Ropenta Jeniru group or Ri Echirushiku port Pentajeniru group der And each may be the same or different.
- the ligand L 2 other than the methyl-opened pentagenenyl group or the ethyl-opened penta-genyl group coordinated to the transition metal atom M is represented by L 1 in the general formula (I).
- Examples of such a transition metal compound represented by the general formula (II) include bis (methylcyclopentenyl) zirconium dichloride, bis (ethylcyclopentenyl) zirconium dichloride, and the like.
- a transition metal compound in which the zirconium metal is replaced with a titanium metal or a hafnium metal in the above zirconium compound can be used.
- transition metal compounds represented by the general formula (II) bis (methylcyclopentenyl) zirconium dichloride and bis (ethylcyclopentenyl) zirconium dichloride are particularly preferred. .
- transition metal compound at least one transition metal compound selected from the transition metal compounds represented by the above general formula (I) and at least one transition metal compound selected from the transition metal compounds represented by the above general formula (II) At least one transition metal compound is used in combination.
- the method of combination is such that under the same polymerization conditions, the olefin weight obtained from the catalyst component containing only the transition metal compound represented by the general formula (I) as the transition metal compound component is obtained. And a olefin polymer obtained from a catalyst component containing only the transition metal compound represented by the general formula (II) as the transition metal compound component. It is preferable to use a combination of the catalysts so that the ratio of the catalyst to MF R (MF R (II)) becomes MF R (I) MF R (II) ⁇ 20.
- a combination of bis (1,3-n-butylmethylcyclopentagenyl) zirconium dichloride and bis (methylcyclopentagenyl) dichlorodichloride Combination of 1,3-n-propylmethylcyclopentagenil) zirconium dichloride and bis (methylcyclopentagenyl) zirconium dichloride, Preferred is a combination of bis ( ⁇ -butylcyclopentenyl) zirconium dichloride and bis (methylcyclopentenyl) zirconium zirconium chloride.
- At least one transition metal compound (b-II) is defined as a compound having a molar ratio (b-IZb-II) of ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ , preferably 9 to no, more preferably It is desirable that the compound be used in an amount such that it is most preferably in the range of 85/15 to 55/45.
- transition metal compound catalyst component containing at least one of them is sometimes referred to as “component (b)”.
- the catalyst for polymerization of olefin (Cat-1) is a catalyst formed from the above-mentioned organic aluminum compound (a), the transition metal compound (bI) and the transition metal compound (b-II).
- the above-mentioned organoaluminum methoxy compound (a), the transition metal compound (bI), and the transition metal compound (b-II) are supported on the following carrier (c) to form a catalyst (Cat-2).
- Cat-2 can also be used.
- the carrier (c) used as required is an inorganic or organic compound, and is a granular or fine solid having a particle size of 10 to 300 ⁇ m, preferably 20 to 20 ⁇ m. Is used. Of these, a porous oxide is preferred as the inorganic compound, and specifically, Si 0 2 , A ′ 1 2 ⁇ 3 , M G_ ⁇ , Z R_ ⁇ 2, T i 0 2, ⁇ 2 0 3, C a O, ⁇ ⁇ ⁇ , B a O, ⁇ h 02 like or mixtures containing these, for example, S i 0 2 - Mg O, S i 02-A 1 2 0 3 , S i 02-T i 0 2 , S i ⁇ 2 -V 2 0 5 , S i 0 2 -C r 2 0 3 , S i 02-T i 0 2 -M g 0 and the like can be exemplified.
- Arbitrary also preferable is composed mainly of one component low Na rather to have been selected from the group consisting of S i 0 2 and A 1 2 0 3 among these.
- the above inorganic the oxide small amount of N a 2 C 0 3, K 2 C 0 3, C a CO 3, M g C 0 3> N a 2 S 0 4, A "(S 0 4) 3, B a SO "KN 0 3, M g ( N_ ⁇ 3) 2, a 1 (N 0 3) 3, N a 2 0, K 2 0, L i 2 0 such carbonates, sulfates, nitrates, oxides It does not matter even if it contains a substance component.
- a carrier (c) has different properties depending on the type and manufacturing method, but the carrier preferably used has a specific surface area of 50 to: l OOO n ⁇ Z g or 100 to 100.
- the carrier is used after calcining at 100 to 100, preferably 150 to 700, if necessary.
- the amount of adsorbed water is desirably less than 1.0% by weight, preferably less than 0.5% by weight, and the surface hydroxyl groups are preferably 1.0% by weight or more, preferably 1.0% by weight or less.
- it is 1.5 to 4.0% by weight, particularly preferably 2.0 to 3.5% by weight.
- the amount of adsorbed water (% by weight) and the amount of surface hydroxyl groups (% by weight) of the carrier (c) are determined as follows.
- the amount of water adsorbed is defined as the percentage of the weight loss before drying at a temperature of 200 under normal pressure and flowing nitrogen for 4 hours with respect to the weight before drying. [Surface hydroxyl content]
- the weight of the carrier obtained by drying at a temperature of 200 for 4 hours under a normal pressure under a stream of nitrogen is defined as X (g), and the carrier is further calcined at 100 for 20 hours.
- the weight of the calcined product from which the surface hydroxyl groups have disappeared is calculated as Y (g) by the following equation.
- examples of the carrier (c) that can be used in the present invention include granular or fine solid particles of an organic compound having a particle size in the range of 10 to 300 / m. .
- examples of these organic compounds include ethylene; propylene, 1-butene, and 4-methyl-1-pentene having 2 to 14 carbon atoms.
- Examples of (co) polymers or copolymers formed mainly with -olefin or vinylcyclohexane or styrene are given below. It can be.
- organic aluminum compound (d) is required as a component for forming the catalyst for olefin polymerization (Cat-1) and (Cat-2). Can be used accordingly.
- component (d) organic aluminum compound used as necessary include, for example, an organic aluminum compound represented by the following general formula (i). Numide compounds can be exemplified.
- R 1 is a hydrocarbon group having 1 to 12 carbon atoms
- X is a halogen atom or a hydrogen atom
- n is 1 to 3.
- R 1 is a hydrocarbon having 1 to 12 carbon atoms.
- a radical for example an alkyl, cycloalkyl or aryl group. Specifically, methyl, ethyl, n -propyl, isopropyl, isobutyl, pentyl, hexyl, octyl, cyclopentyl, cyclo
- organic aluminum compound (d) such as a xyl group, a phenyl group, and a tolyl group include the following compounds.
- R 1 Ri similar der the above, Y an OR 2 group, - OS i R 3 3 group, - OAIR group, - NR 5 2 group, one S i R group or a N (R 7 )
- a 1 R group, n is 1-2
- R 2 , R 3 , R 4 and R 8 are methyl, ethyl, isopropyl, isobutyl, cyclo ⁇ the sill group state, and are such as full-et two Le group
- R 5 is Ri hydrogen atom, methylation group, Echiru group, Lee Sopuro propyl group, Fuweniru group, Application Benefits main Chirushi Li Le group of Dodea,
- R 6 and R 7 are a methyl group, an ethyl group, or the like.
- Specific examples of such an organic aluminum compound include the following compounds.
- RA 1 (0 R 2 ) A compound represented by 3 - ⁇ , such as dimethyl aluminum methoxide, getyl aluminum methoxide, and diisobutyl aluminum methoxide.
- RA 1 (NR 5 2) 3 - compounds represented by n for example, M e 2 A 1 NE t 2 , E t 2 A l NHM e, M e 2 A l NHE t, E t 2 A 1 N (S i M e 3) 2, (iso-B u) 2 A 1 N (S i M e 3) 2 and the like;
- the catalyst for polymerization of olefin is composed of the above components (a) and (b) and, if necessary, component (d).
- the polymerization catalyst (Cat-2) (solid catalyst (Cat-2)) comprises a solid catalyst (component) comprising the above-mentioned component (a) and component (b) supported on a carrier (c). And, if necessary, component (d).
- the catalyst components can be prepared by mixing and contacting each catalyst component inside or outside the polymerization vessel. After forming the solid component, component (b) is mixed and contacted to form a solid catalyst, or component (a) and component (b) are mixed and contacted in advance to form a solid catalyst, and then the solid catalyst is formed.
- a catalyst can be added to the polymerization system.
- the catalyst for olefin polymerization can be formed by mixing and contacting the components) and (b), and if necessary, the component (d) in an inert hydrocarbon solvent. Can be.
- the order of contact of the components is arbitrarily selected.
- the component (b) is obtained by previously mixing two or more transition metal compounds (components (bI) and (b-II)) forming the component (b). After that, it is preferable to mix and contact with other components.
- inert hydrocarbon solvent used in the preparation of the catalyst for polymerization of olefin (Cat-1) include propane, butane, pentane, hexane, heptane, octane, and octane.
- Aliphatic hydrocarbons such as decane, dodecane, and kerosene; alicyclic hydrocarbons such as cyclopentane, cyclohexane, and methylcyclopentane; benzene, toluene, and xylene Any aromatic hydrocarbons; halogenated hydrocarbons such as ethylene chloride, chlorobenzene, and dichloromethane; and mixtures thereof.
- the concentration of component) is about 0.1 to 5 mol in terms of aluminum in component (a).
- the atomic ratio (A 1 / transition metal) between the aluminum (A 1) in component (a) and the transition metal in component (b) is usually from 10 to 500, preferably from 20 to 2 0 is 0.
- the atomic ratio (A l-dZA la) of the aluminum atom (A ld) in the component (d) and the aluminum atom (A 1-a) in the component (a) used as necessary is Usually it is in the range of 0.02 to 3, preferably 0.05 to 1.5.
- the mixing temperature at the time of mixing and contacting the component (a), the component (b) and, if necessary, the component (d) is usually from 150 to 150 t :, preferably from 120 to; 0 and the contact time is between 1 minute and 50 hours, preferably between 10 minutes and 25 hours.
- fin polymerization catalyst (Cat-1) is the catalyst 1 g equivalent Ri component (b) in terms of the transition metal atom 5 X 1 0- 6 ⁇ 5 X 1 0 mole and preferred rather is contained in an amount of 1 0 _5 ⁇ 2 X 1 0- 4 mol, or Components (a) and component (d) is converted to 1 0- 2 ⁇ 2.
- 5 X 1 0 one 2 moles aluminum Niumu atom, it is preferable and rather 1.
- 5 X 1 0- 2 ⁇ 2 ⁇ 1 0 Desirably contained in 2 moles.
- the solid catalyst (Cat-2) is prepared by supporting component (a) and component (b) as described above, and if necessary, component (d) on a carrier (c). And can be.
- component (a), component (b), carrier (c) and component (d) when preparing the solid catalyst (Cat-2) is determined by the force arbitrarily selected, preferably ) And the support (c) are mixed and contacted, then the component (b) is mixed and contacted, and if necessary, the component (d) is mixed and contacted.
- the component (b) is obtained by mixing in advance two or more transition metal compounds forming the component (b), the components (b-1) and (b-b)), and then mixing and contacting with other components. This is preferred.
- the contact of the component (a), the component (b), the carrier (c) and the component (d) can be carried out in an inert hydrocarbon solvent, and the inert hydrocarbon solvent used for preparing the catalyst is used.
- the inert hydrocarbon solvent used for preparing the catalyst is used.
- Specific examples thereof include the inert hydrocarbon solvents used in preparing the above-described catalyst for olefin polymerization (Cat-1).
- component (b) is equivalent to 1 g of carrier (c), Usually 5 X 1 0 and conversion calculated - 6 ⁇ 5 X 1 0- 4 mol, used in an amount of preferred and rather is 1 0- 5 ⁇ 2 X 1 0 one 4 moles, the concentration of component (b), about 1 0- 4 ⁇ 2 X 1 0 one 2 Morunori tool preparative Le (solvent), and preferred rather is in the range of 2 X 1 0 _4 ⁇ 1 0- 2 mol / Li Tsu torr (solvent).
- the atomic ratio (A 1 transition metal) between aluminum (A 1) in component (a) and the transition metal in component (b) is usually 10 to 5 _
- the atomic ratio between the aluminum atom (A 1-d) in the component (d) and the aluminum atom (A a a) in the component (a) used as necessary (A 1 -d / A) a) is usually in the range of 0.02 to 3, preferably 0.05 to 1.5.
- the mixing temperature for mixing and contacting the component (a), the component (b) and the carrier (c), and if necessary, the component (d) is usually 150 to 150 t :, preferably 1 to 2 t. 0 to 120, and the contact time is 1 minute to 50 hours, preferably 10 minutes to 25 hours.
- the solid catalyst (Cat-2) prepared as described above has a carrier (1 g), and the component (b) is equivalent to 5 X 10 — 6 to 5 X 10 — 4 mol in terms of transition metal atoms. , 'preferred and rather is supported in an amount of 1 0- 5 ⁇ 2 X 1 0- 4 mol, also in terms of the carrier (c) 1 g equivalent Ri components (a) and (d) is the Aluminum Niu arm atoms to 1 0 one 3 ⁇ 5 X 1 0 2 mol, preferred and rather is 2 X 1 0 _3 ⁇ 2 X 1 0 _ 2 molar amounts in desired that you have been responsible lifting arbitrariness.
- the above-mentioned catalyst for the polymerization of olefin may be a prepolymerized catalyst in which the olefin is preliminarily polymerized.
- the prepolymerization catalyst is prepared by introducing olefin into an inert hydrocarbon solvent and performing prepolymerization in the presence of the above components (a), (b) and the carrier (c).
- the solid catalyst component (Cat-2) is formed from the component (a), the component (b) and the carrier (c).
- component (a) and / or component (d) may be further added.
- the olefin may be introduced into a suspension prepared from the solid catalyst (Cat-2) (solid catalyst component) described above, or the solid catalyst (Cat-2) may be prepared. After that, the formed solid catalyst (Cat-2) is separated from the suspension, and ⁇
- the olefin may be introduced there.
- component (b) When preparing the prepolymerized catalyst, the above component (b) is usually used in an amount of 10 to s to 2 ⁇ 10 to 2 mol Z liter (solution) in terms of the transition metal atom in the component (b). medium), favored by rather is 5 X 1 0- 5 ⁇ ; L 0- 2 used in an amount of mol / l (solvent), component (b) carrier (c) 1 g equivalent is, the transition metal in terms of atomic usually 5 X 1 0 one 6 ⁇ 5 X 1 0- 4 mol, and preferred rather is used in an amount of 1 0 one 5 ⁇ 2 X 1 0- 4 mol.
- the atomic ratio (A ⁇ / transition metal) of the aluminum in component (a) to the transition metal in component (b) is usually 10 to 500, preferably 20 to 200. It is.
- the atomic ratio (A 1-d / A 1-a) of the aluminum atom (A id) in the component (d) and the aluminum atom (A i- a) in the component) used as necessary Is usually 0.02-3, preferably 0.05-
- the range is 1.5.
- the solid catalyst component is usually 1 0 _ 6 ⁇ 2 X 1 0 _2 mole / l (solvent), is preferred to rather 5 X 1 0 one fifth to one 0 one with a transition metal of the transition metal compound Used in an amount of 2 moles Z liter (solvent).
- the prepolymerization temperature is 120 to 80 :, preferably 0 to 60 Ot: and the prepolymerization time is 0.5 to 100 hours, preferably about 1 to 50 hours. Degrees.
- Preliminary olefins used in the polymerization include ethylene and ⁇ - olefins having 3 to 20 carbon atoms, such as propylene, 1-butene, 1-pentene, Examples thereof include 4-methyl-1-pentene, 1-hexene, 1-octene, 1-decene, 1-dodecen, and 1-tetradecen. Among these, it is used in the polymerization of ethylene or ethylene. It is particularly preferable to use the combination with -refine.
- the prepolymerization catalyst is prepared, for example, as follows. That is, the carrier is suspended in an inert hydrocarbon. Next, an organic aluminum moxy compound (component ( a )) is added to the suspension and reacted for a predetermined time. Thereafter, the supernatant is removed, and the obtained solid component is resuspended with an inert hydrocarbon. After adding a transition metal compound (component (b)) to the system and reacting for a predetermined time, the supernatant is removed to obtain a solid catalyst component. Then, the solid catalyst component obtained above is added to an inert hydrocarbon containing an organic aluminum compound (component ()), and pre-polymerization is performed by introducing olefin into the component. Obtain a catalyst.
- the formed olefin polymer is 0.1 to 500 g, preferably 0.2 to 300 g, more preferably 0.1 to 0.5 g per 1 g of the carrier (c). Desirably, the amount is 5 to 200 g.
- a carrier (c) 1 g equivalent Ri component (b) is about 5 X 1 0- 6 ⁇ 5 X 1 0 _4 mol in terms of transition metal atom, is preferable and rather 1 0- 5 to be carried in an amount of 2 X 1 0- 4 mol, relative to components (a) and (d) secondary aluminum ⁇ beam atoms in (a 1) is a transition metal atom in the component (b) (M) It is desirable that the catalyst be supported in a molar ratio (A1ZM) of 5 to 200, preferably 10 to 150.
- A1ZM molar ratio
- the prepolymerization can be carried out either in a batch system or a continuous system, and can be carried out under reduced pressure, normal pressure or under pressure.
- the intrinsic viscosity [] force measured in decalin at least 135 in the presence of hydrogen?
- Producing a prepolymer such as in the range of 0.2 to 7 d 1 g, preferably 0.5 to 5 dl Z g ⁇
- Copolymerization of ethylene and ⁇ -olefin is preferably carried out in the gas phase or in a slurry-like liquid phase in the presence of the above-mentioned catalyst for olefin polymerization, and is preferred. Or in the gas phase.
- an inert hydrocarbon may be used as a solvent, or the olefin itself may be used as a solvent.
- inert hydrocarbon solvent used in the slurry polymerization examples include pronon, butane, isobutane, pentane, hexane, octane, decane, dodecane, and heptane.
- Aliphatic hydrocarbons such as oxadecane and octadecane; cycloaliphatic hydrocarbons such as cyclopentane, methylcyclopentane, cyclohexane and cyclooctane
- Aromatic hydrocarbons such as benzene, druene, and xylene; and petroleum fractions such as gasoline, kerosene, and gas oil.
- the above-mentioned catalyst is usually used in a concentration of 10 3 to 10 3 mol, as the concentration of the transition metal atom in the polymerization reaction system. / l, preferred and rather is arbitrarily desired and this used in an amount of 1 0 1 to 1 0 4 Moruno l.
- the aluminum atom (A) in component (d) used as necessary is 5 to 300, preferably 10 to 200, and more preferably. Is in the range of 15 to 150.
- component (d) Formed from component (a), component (b) and carrier (c) and, if necessary, component (d)
- the formed catalyst for olefin polymerization uses not only the organoaluminumoxy compound (component (a)) supported on the carrier but also the unsupported organic aluminum dimethyloxy compound in the polymerization. You may.
- the atomic ratio (A 1 ZM) between the aluminum atom (A 1) in the unsupported organic aluminum compound and the transition metal atom (M) in the transition metal compound (b) is 53 It is in the range of 0, preferably 1,200, more preferably 1,500.
- the component '(d) used as necessary may be supported on the carrier (c) or may be added at the time of polymerization.
- the component (d) is supported on the carrier (c), and may be added during the polymerization. At this time, the component (d) supported on the carrier and the component (d) added during the polymerization may be the same or different.
- the atomic ratio (A 1 / M) of the aluminum atom (A 1) in the component (d) and the transition metal atom (M) in the transition metal compound (b) used as necessary is 5 It is in the range of 300, preferably 1,200, more preferably 1,550.
- the polymerization temperature is usually in the range of 150 to 100, and preferably in the range of 900.
- the polymerization temperature is usually in the range from 0 to 120, preferably from 20 to L 0.
- the polymerization pressure is usually from normal pressure to 100 kg Zcm 2 , preferably 250 kg / cm 2 , and the polymerization can be performed in any of batch, semi-continuous and continuous systems. This can also be done in the system.
- the olefin polymerization catalyst includes components other than those described above. Can also contain other components useful for off-line polymerization.
- Examples of the olefin which can be polymerized by such an olefin polymerization catalyst include ethylene and ⁇ -olefin having 6 to 8 carbon atoms, and, for example, propylene. Pyrene, 1-butene, 1-pentene, 4-methyl-1-pentene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, 1-eicosene, etc.
- ⁇ - olefins cyclic olefins having 3 to 20 carbon atoms, such as cyclopentene, cycloheptene, norbornene, 5-methyl-2-norbornene, and tetracyclododecene And 2-methyl 1,4,5,8-dimethano-1,2,3,4,4a, 5,8,8a-octahydronaphthalene.
- styrene, vinylcyclohexane, and gen may be used.
- the Orefu fin copolymer, constituent units derived from ethylene is 5 0-1 0 0 wt 0/0, the rather to preferred 5 5-9 9 wt 0/0, rather then preferred Ri good 6 5 1-9 8 wt%, present in the most preferred and rather the amount of 7 0-9 6 wt%,
- Do of 6 to 8 carbon atoms - constituting units derived from Orefu fin is 0-5 0 weight 0/0 Preferably, it is present in an amount of from 1 to 45% by weight, more preferably from 2 to 35% by weight, and most preferably from 4 to 30% by weight.
- the ethylene ' ⁇ - olefin copolymer thus obtained preferably has the above-mentioned properties (Ai) to (A-iii), is excellent in moldability, and is transparent. And films with excellent mechanical strength can be manufactured.
- the ethylene-based copolymer composition ( ⁇ ') has substantially the same composition and utility as the above-mentioned ethylene-non-olefin copolymer ( ⁇ ), ⁇
- the ethylene-olefin copolymer ( ⁇ ) is a random copolymer of ethylene and ⁇ -olefin having 6 to 8 carbon atoms.
- Examples of the ⁇ -olefin having 6 to 8 carbon atoms include the same as those described above.
- Ethylene ⁇ alpha - At O Les off fin copolymer (beta) construction units in which the majorIncr derived from ethylene, 5 0-1 0 0 wt%, is preferred to rather 5 5-9 9 wt 0/0, Preferably present in an amount of 65-98% by weight, most preferably 70-96% by weight, derived from c -olefins having 6-8 carbon atoms.
- the constituent units are present in an amount of 0 to 50% by weight, preferably 1 to 45% by weight, more preferably 2 to 35% by weight, especially preferably 4 to 30% by weight. This is desirable.
- the ethylene-olefin copolymer ( ⁇ ) preferably has the following properties (B-i) to (B-vii). i) It is particularly preferable to have the characteristics shown in (B-viii).
- Density (d) is 0.8 8 0 to 0.9 7 0 8 (: 111 3, preferred and rather 0,8 8 0 to 0.9 6 0 g / cm 3, rather then preferred Ri good 0.8 9 0 0.
- Melt flow rate (MFR) is 0.02 to 200 gZ for 10 minutes, preferably 0.05 to 50 gZlO, more preferably 0.1 to
- the ethylene / ⁇ -olefin copolymer having such properties has a high melt tension ( ⁇ ) and therefore has good moldability.
- MwZMn The molecular weight distribution (MwZMn) was measured as follows using GPC-150C manufactured by Millipore.
- Separation column is TSKGNHHT and column size is diameter 72 mm, length: 600 mm, column temperature: 140, mobile phase: 0-dichlorobenzene (Wako Pure Chemical Industries) and BHT (Takeda Pharmaceutical Co., Ltd.)
- mobile phase 0-dichlorobenzene (Wako Pure Chemical Industries) and BHT (Takeda Pharmaceutical Co., Ltd.)
- transfer by 1.0 ml transfer by 1.0 ml
- the sample concentration is 0.1% by weight
- the sample injection volume is 500 microliters
- a differential refractometer is used as a detector.
- Standard poly styrene Les emission uses the one company manufactured Tosoh on the molecular weight M w ⁇ 1 0 0 0 and Mw> 4 X 1 0 6, pre Tsu Shi for 1 0 0 0 rather rather Mw 4 XI 0 6
- the product was manufactured by Chemical Chemicals.
- (B-viii) number 0.5 or der following Ri Number 1 0 0 _ 0 those carbon atoms of the unsaturated bonds present in the molecule is, and is one molecule of the polymer equivalent Ri less than 1, Note
- the quantification of the unsaturated bond was performed by 13 C-NMR using a signal assigned to other than the double bond, ie, a signal in the range of 10 to 50 ppm, and a signal assigned to the double bond, ie, 10
- the area intensity of the signal in the range of 5 to 150 ppm is determined from the integral curve and is determined from the ratio.
- the -olefin copolymer (B) is, for example, an olefin polymer containing (a) an organic aluminum dimethyl compound and (b-II) a transition metal compound represented by the general formula (II). It can be obtained by copolymerizing ethylene and a-olefin having 6 to 8 carbon atoms in the presence of a catalyst for use. (a) Organic Aluminum iodonium Okishi compound and (b-II) transition metal compound, wherein the ethylene-les down alpha -. the same bets is also described in the preparation of O reflex fin copolymer (A) .
- the carrier the organoaluminum compound (d) may be used, or prepolymerization may be performed.
- the amount of each component used The pre-polymerization conditions and main polymerization conditions were also the same as those for the ethylene / "-olefin _
- the ethylene / ⁇ -olefin copolymer (C) is a random copolymer with ⁇ -olefin having 6 to 8 carbon atoms.
- Examples of the a- 'olefin having 6 to 8 carbon atoms include the same as those described above.
- Ethylene ⁇ alpha - Orefi down copolymer (C) the constituent units derived from ethylene, 5 0 to: L 0 0 wt%, rather then favored 5 5-9 9 wt 0/0, Shi preferred Ri yo Ku 6 5-9 8 weight 0/0, rather the most preferred is present in an amount of 7 0-9 6 by weight%
- Do of 6 to 8 carbon atoms - constituting units derived from Orefi down is 0 Desirably it is present in an amount of 50% by weight, preferably 1 to 45% by weight, more preferably 2 to 35% by weight, particularly preferably 4 to 30% by weight.
- the 'ethylene' ⁇ -olefin copolymer (C) preferably has the following properties (C-i) to (Cv). ) It is particularly preferable to have the properties as shown in (C-vi).
- Density (d) should be between 0.880 and 0.970 g Zcm 3 , preferably between 0.880 and 0.96 g / cm 3 , more preferably 0.89 0-0.
- Melt mouthfeel rate is between 0.02 and 200 £ for 10 minutes, preferably between 0.05 and 50 g ZLO, more preferably 0 1 to
- ethylene / ⁇ -olefin copolymer (C) is, for example, an oligomer containing (a) an organoaluminum alkoxy compound, and (b-1) a transition metal compound represented by the general formula (I). It can be obtained by copolymerizing ethylene 'and an orffine having 6 to 8 carbon atoms in the presence of a polymerization catalyst.
- the organic aluminum oxy compound and the (bI) transition metal compound are the same as those described in the method for producing the ethylene ′′ ′′-olefin copolymer (A).
- the ethylene-based copolymer composition ( ⁇ ′) contains the ethylene-free-olefin copolymer ( ⁇ ) in an amount of 1 to 90% by weight, preferably 2 to 80% by weight.
- ethylene 'alpha - O reflex fin copolymer (C) is 1 0-9 9 weight 0/0, preferred and rather is 2 0-9 8 wt% of this and is desired arbitrary contained in an amount.
- the ethylene / ⁇ -olefin copolymers (B) and (C) are both ethylene'hexene-1 copolymers.
- the ethylene-based copolymer composition ( ⁇ ') is preferably As shown in (1), it has substantially the same physical properties as the ethylene-olefin copolymer (A), and is expected to have similar utility.
- the moldability is good.
- the ethylene copolymer composition ( ⁇ ') satisfying such requirements is excellent in moldability and transparency of the obtained film.
- the ethylene copolymer composition ( ⁇ ′) preferably satisfies the following requirements in addition to the above requirements.
- Structural units is 5 0-1 0 0 wt%, preferred and rather 5 5-9 9 weight 0/0.
- Good Ri preferred to rather 6 5-9 8 weight 0/0, the rather most preferred 7 0 present in an amount of 1-9 6 by weight%, xenon emission O Les off fin of 6 to 8 carbon atoms, to be rather is preferred - the constituent units derived from 1 0-5 0 weight 0/0, It is preferably present in an amount of from 1 to 45% by weight, more preferably from 2 to 35% by weight, especially preferably from 4 to 30% by weight.
- the density (d) of the ethylene copolymer composition ( ⁇ ′) is 0.880 to 0.970 g / cm 3 , preferably 0.880 to 0.96. 0 g / cm 3 , more preferably in the range of 0.890 to 0.935 g Zcm 3 , most preferably in the range of 0.90'5 to 0.930 g / cm 3 It is desirable to be in
- the melt flow rate (MFR) of the ethylene copolymer composition ( ⁇ ') is 0.05 to 200 g / 10 minutes, preferably 0.08 to 5 g. More preferably, it is in the range of 0.1 to 10 minutes.
- the ⁇ -decane soluble component fraction [W (% by weight)] and density [d (g / cm 3 )] of the ethylene copolymer composition ( ⁇ ') at 23 were as follows.
- W is 60Xexp (-100 (d- 0.88)) + 0.1
- An ethylene-based copolymer composition () ') comprising an ethylene- ⁇ -olefin copolymer ( ⁇ ) and an ethylene- ⁇ -olefin copolymer (C) can be obtained by a known method. It can be manufactured by using, for example, the following method.
- Ethylene. -Olefin copolymer ( ⁇ ), ethylene-olefin copolymer (C), and other optional components are added to a tumbler, extruder, A method of mechanical blending or melt mixing using a kneader or the like.
- the -olefin copolymer (B), the ethylene-"-olefin copolymer (C), and the other components added as required are mixed with a suitable good solvent (eg, hexane, A solvent such as heptane, decane, cyclohexane, benzene, toluene and xylene) and then removing the solvent.
- a suitable good solvent eg, hexane, A solvent such as heptane, decane, cyclohexane, benzene, toluene and xylene
- the ethylene. ⁇ -olefin copolymer (A) and the ethylene copolymer composition ( ⁇ ') according to the present invention both have excellent moldability and transparency. And the ability to produce films with excellent mechanical strength, eg, ethylene, in combination with other polymers, preferably ethylene- ⁇ -olefin copolymer.
- ⁇ ⁇ ⁇ ⁇ ' ethylene-based copolymer composition
- ⁇ ' ethylene- ⁇ -olefin copolymer
- It can be used as an ethylene copolymer composition ( ⁇ , '') of ⁇ ') with another ethylene- ⁇ -olefin copolymer.
- an ethylene / ⁇ -olefin copolymer (D) described below is particularly preferably used. .
- the ethylene ' ⁇ -olefin copolymer (D) used in the present invention is a random copolymer of ethylene and "-olefin having 3 to 20 carbon atoms.
- ⁇ -age olefins having 3 to 20 carbon atoms used for copolymerization with ethylene include propylene, 1-butene, and 1-pentene. , 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decen, 1-dodecen, 1-tetradecen, 1-hexadecen, 1-hex Examples include kuta decene and 1-eicosene.
- the structural units derived from the ethylene are 50 to 100% by weight, preferably 55 to 99% by weight, Yo ⁇
- -55-preferably present in an amount of 65 to 98% by weight, most preferably 70 to 96% by weight, derived from an ⁇ -olefin having 3 to 20 carbon atoms configuration unit is 0 to 5 0% by weight, preferred to rather than from 1 to 4 5 weight 0/0, good Ri preferred to rather than 2 to 3 5% by weight, the amount of the most preferred and rather than 4 to 3 0% by weight It is desirable that it exists.
- Such an ethylene- ⁇ -olefin copolymer (D) preferably has the following properties (D-i) and (D-ii). It is more preferable to have the characteristics as shown in (D-i) to (D-iv).
- the density (d) is 0.8 5 0 to 0.9 8 0 3
- an intrinsic viscosity measured in deca Li down [Wa] is 0.4 ⁇ 8 (11 / / ⁇ , and preferred rather is 0. 4 ⁇ 1. 2 5 ( 31 / £, More preferably, it is in the range of 0.5 to 1.23 cHZ g.
- the ethylene- ⁇ -olefin copolymer ( ⁇ ) and the ethylene- ⁇ -olefin copolymer (D) are not the same, and ethylene. -Olefin copolymers ( ⁇ ) and (C) and ethylene. Not the same as -olefin copolymer (D).
- the ethylene .alpha.-olefin copolymer (D) and the ethylene .alpha.-olefin copolymer (A) to (C) are distinguished by the following characteristics.
- the ethylene-olefin copolymer (D) does not satisfy at least one of the requirements (A-i) to (A-iii) for defining the copolymer ( ⁇ ). It is a copolymer.
- the ethylene ' ⁇ -olefin copolymer (D) has at least one of the requirements (B-iii) to (B-vii) for defining the copolymer ( ⁇ ). Meet requirements There is no copolymer.
- the ethylene-olefin copolymer (D) is a copolymer that does not satisfy at least one of the requirements (C-iii) to (C-v) that define the copolymer (C).
- ethylene ' As the -olefin copolymer (D), the intrinsic viscosity measured in decalin [W] is smaller than that of the ethylene-a-olefin copolymer. This is one of preferred embodiments. In addition, ethylene. As the ethylene- ⁇ - olefin copolymer (D), the intrinsic viscosity [ ⁇ ] force measured in decalin was smaller than that of the ethylene ' ⁇ -olefin copolymer ( ⁇ ) and (C) by 135, One having a low density is also a preferable embodiment.
- the -olefin copolymer (D) contains, for example, (a) an organoaluminumoxy compound, and (b-III) a transition metal compound represented by the following general formula (III). It can be obtained by copolymerizing ethylene and an olefin having 3 to 20 carbon atoms in the presence of a refin polymerization catalyst.
- the organic aluminum oxy compound is the same as that described in the method for producing the ethylene / ⁇ -olefin copolymer ( ⁇ ).
- the carrier the organic aluminum compound (d) may be used, or prepolymerization may be performed.
- the amount of each component used, the pre-polymerization conditions and the main polymerization conditions are the same as in the case of the production of the ethylene / olefin copolymer (A).
- transition metal compound (b-III) will be described.
- -58- is not particularly limited as long as it is a transition metal compound of Group 4 of the periodic table containing a ligand having a cyclopentagenyl skeleton, but is preferably a transition metal compound represented by the following general formula (III). New
- M is a transition metal atom selected from Group 4 of the periodic table, specifically, zirconium, titanium or hafnium, preferably zirconium.
- X is the valence of the transition metal.
- L 3 is a ligand coordinated to the transition metal atom M, and at least one of the ligands 3 is a ligand having a cyclopentagenenyl skeleton, and cyclopentagenenyl is a ligand having a cyclopentagenyl skeleton.
- the ligand having a skeleton include a cyclopentenyl group, a methylcyclopentenyl group, a dimethylcyclopentenyl group, a trimethylcyclopentenyl group, and a tertiary cyclopentenyl group.
- alkyl-substituted cyclopentenyl groups include indenyl groups, 4,5,6,7-tetrahydroindenyl groups, fluorenyl groups, etc. be able to. These groups may be substituted with a halogen atom, a trialkylsilyl group or the like.
- an alkyl-substituted cyclopentenegen group is particularly preferred.
- the coordination having two cyclopentagenyl skeletons among them are substituted alkylene groups such as ethylene and propylene, isopropylidene, diphenylmethylene, etc., silylene groups or dimethylsilylene groups, and diphenylene. It may be bonded via a substituted silylene group such as a lucirylene group or a methylphenylsilylene group.
- L 3 other than the ligand having a cyclopentagenenyl skeleton is the same as L 1 in the general formula (I), a hydrocarbon group having 1 to 12 carbon atoms, alkoxy group, ⁇ Li one proxy group, Application Benefits Arukirushiri group, a halogen atom, a hydrogen atom or S 0 3 R groups' (where R 8 carbon atoms which may have a substituent such as a halogen, A hydrocarbon group). And the S 0 3 represented by R 'are ligands, p- toluene Suruhona preparative group, meta Nsuruhona preparative group, etc. Application Benefits Furuo b meth Nsuruhona preparative groups.
- the transition metal compound represented by the general formula (III) is more specifically represented by the following general formula (III).
- ⁇ is the above transition metal atom
- R 2 is a group (ligand) having a cyclopentagen skeleton
- a metallocene compound in which one of R 3 , R 4 and R 5 is a group (ligand) having a cyclopentagenenyl skeleton for example, R 2 and R 5
- a metallocene compound in which 3 is a group (ligand) having a cyclopentagenenyl skeleton is preferably used.
- These groups having a cyclopentagenenyl skeleton include an alkylene group such as ethylene and propylene, a substituted alkylene group such as isopropylidene and diphenylmethylene, a silylene group, and the like.
- R 4 and R 5 may be a group having a cyclopentagenyl skeleton, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, alkoxy group, ⁇ Li one b alkoxy group, Application Benefits Arukirushi Li group, an S 0 3 R, Nono port Gen atom or a hydrogen atom.
- transition metal compound represented by the general formula (III) examples include bis (indenyl) zirconium dichloride, bis (indenyl) zirconium dibromide, and bis (indenyl) zirconium.
- the di-substituted cyclopentagenyl ring includes 1,2- and 1,3-substituted, and the tri-substituted 1,2-, 3- and 1,2,4-substituted including.
- Alkyl groups such as propyl and butyl include isomers such as n-, i-, sec- and tert-.
- zirconium compounds compounds in which zirconium is replaced with titanium or hafnium can also be used.
- the transition metal compound represented by the general formula (III) includes a transition metal compound (bI) represented by the general formula (I) and a transition metal compound (b) represented by the general formula (II). -II).
- the ethylene- ⁇ -olefin copolymer (D) is prepared by adding ethylene and ⁇ -olefin having 3 to 20 carbon atoms in the presence of the above-mentioned catalyst for olefin polymerization. And can be produced by copolymerizing the obtained copolymer such that the density of the obtained copolymer is 0.850 to 0.980 gZcm 3 .
- the ethylene ' ⁇ -olefin copolymer (D) is 100% by weight of the above-mentioned ethylene ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ ⁇ '). It is preferably used in an amount of from 99 to 60 parts by weight, more preferably from 95 to 60 parts by weight, based on parts by weight.
- composition with the olefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ ′) can be produced by using the above-mentioned known method. It can also be produced by a multi-stage polymerization method in which copolymerization is divided into two or more stages under different reaction conditions using one or more polymerization vessels.
- the molded article according to the present invention comprises an ethylene- ⁇ -olefin copolymer ( ⁇ ) or an ethylene-based copolymer composition ( ⁇ ′), ( ⁇ ′ ′), ((). ⁇ ',').
- the molded article examples include a single-layer film, a multilayer film, an injection molded article, an extruded molded article, a fiber, a foam, an electric wire sheath, and more specifically, an agricultural film.
- Film single-layer, multi-layer
- impermeable sheet multi-layer film
- packaging film multi-layer film, stretch film, high-load packaging film
- multi-layer insulation Film laminated film sealant, heavy packaging film, grain bag, fluid packaging voucher, batch packaging package, back-in-box interior container, medical container,
- the ethylene- ⁇ -olefin copolymer ( ⁇ ) or the ethylene-based copolymer composition ( ⁇ '), ( ⁇ ' '), or ( ⁇ ' '' ') is formed below.
- the molded body will be described in more detail.
- -65-It consists of additives such as rack, medium-density polyethylene, ethylene'vinyl acetate copolymer, and ethylene-like one-year-old olefin copolymer rubber.
- the agricultural film according to the present invention has a thickness of 3 to 30 / zm, preferably 7 to 20.
- Agricultural films can be prepared by the above-mentioned ethylene- ⁇ -olefin copolymer ( ⁇ ) or ethylene-based copolymer composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '' ') ') Can be prepared, for example, by film forming using an infusion method or a ⁇ -die method. Film formation by the inflation method involves extruding a copolymer ( ⁇ ) or a composition ( ⁇ '), ( ⁇ ' ''), ( ⁇ ''''') through a slit die. This is performed by inflating with a predetermined air flow.
- Such agricultural films have excellent adhesion to soil, that is, excellent flexibility, and also have excellent properties such as weather resistance, tensile properties, tear properties, impact resistance, and rigidity. It is mainly used as a multi-film that requires an effect of increasing the temperature of the ground, and is effectively used for open-field cultivation, tunnel cultivation, semi-forcing greenhouse cultivation, column-free cultivation for processing, and early-horizon cultivation. .
- Multi-layer agricultural film
- the agricultural multilayer film according to the present invention is a three-layer laminated film including an outer layer, an intermediate layer, and an inner layer.
- (Outer) layer constituting the agricultural multi-layer full I Lum according to the present invention, the Echire down alpha -.
- the outer layer composed of the copolymer (A) or the composition (A '), (A' '), (A,',) has a very small decrease in light transmittance with time.
- the outer layer of the multilayer film can be made thinner, The weight of the multilayer film can be reduced.
- the inorganic compound used for forming the outer layer of the multilayer film contains at least one atom of Mg, Ca, A1, and Si effective as a preservative.
- Inorganic oxides, inorganic hydroxides, and hydrotalcites are effective as a preservative.
- M 2+ is a divalent metal ion of Mg, Ca or Zn;
- a N — is CI —, Br —, I _, N 0 3 2 —, C 1 0 4 —, S ⁇ 4 2 —, C 0 2 2 —, S i 0 3 2 —, HP 0 4 2 — , HB 0 3 2 —, P 0 4 2 — etc.
- X is a numerical value satisfying the condition 0 ⁇ x ⁇ 0.5
- n is a number that satisfies the condition 0 ⁇ m ⁇ 2]
- hydrotalcite such as a calcined product thereof.
- a hydrotalcite such as a calcined product thereof.
- the non-drotal sites and particularly preferred are the fired products of the inorganic composite compound represented by the above formula. No.
- the inorganic compounds as described above can be used alone or in combination of two or more.
- the average particle size of the inorganic compound is 10 ⁇ m or less, preferably 5 m or less, and more preferably 3 m or less.
- the inorganic compound may be 1 to 20 parts by weight based on 100 parts by weight of the copolymer (A) or the composition ( ⁇ ′). It is preferably used in a proportion of 1 to 18 parts by weight, more preferably in a proportion of 2 to 15 parts by weight.
- Weather stabilizers used as necessary when forming the outer layer of a multilayer film are broadly classified into UV absorbers and light stabilizers, but light stabilizers are more effective for thin agricultural films. Therefore, the effect of improving the weather stability is great.
- HALS hindered amine light stabilizers
- hindered amine stabilizer specifically, the following compounds are used. (1) bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate; (2) dimethyl 2-conoxylate-1- (2-hydroxyxethyl) -4-hydroxy Droxy-2,2,6,6-tetramethyl piperidine polycondensate,
- solder amine light stabilizers can be used alone or in combination of two or more.
- ⁇ Such a light stabilizer is used in an amount of 0.005 to 100 parts by weight of the copolymer ( ⁇ ) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′′). It is used in an amount of 5 parts by weight, preferably 0.05 to 2 parts by weight, and more preferably 0.01 to 1 part by weight.
- Salicylic acid ultraviolet absorbers such as phenyl salicylate, p-tert-butyl phenyl salicylate, and p-octyl phenyl salicylate; 2,4-dihydroxybenzophenone; 2-Hydroxy-4-methoxybenzophenone, 2-Hydroxy-4-octoxybenzophenone, 2-Hydroxy-4-X-dodecyloxybenzophenone, 2, 2 '-Dihydroxy-4-methoxybenzophenone, 2,2'-Dihydroxy-4,4'-Dimethoxybenzofunone, 2-hydroxy-4-methoxy-5-sulfobene Benzofunonone UV absorbers such as Zofenon; ⁇
- Cyano acrylates such as 2-ethylhexyl-2-cyano-3,3'-diphenylacrylate and ethyl-2-cyano-3,3'-diphenylacrylate UV absorbers and the like.
- the ultraviolet absorber is preferably used in an amount of 0.005 to 5 parts by weight, based on 100 parts by weight of the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′′ ′). It is used in an amount of 0.0005 to 2 parts by weight, more preferably 0.01 to 1 part by weight.
- additives such as antifogging agents, antistatic agents, and heat stabilizers to the above copolymer ( ⁇ ) or composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '' '). However, it can be blended within a range that does not impair the object of the present invention.
- an antifogging agent mainly containing a partially esterified product of a polyhydric alcohol and a higher fatty acid having 12 to 24 carbon atoms (including hydroxy fatty acid) is preferably used.
- the intermediate layer that constitutes the agricultural multilayer film according to the present invention is ⁇ - vinyl acetate copolymer, inorganic compound and, if necessary, ethylene.
- ⁇ - polyolefin copolymer (Al) formed from a composition containing a weathering stabilizer and an antifogging agent. I have.
- Ethylene emissions' vinyl acetate copolymer used in the present invention acetic acid vinyl Le content from 2.0 to 3 0 wt%, preferred and rather is from 3.0 to 2 5 weight 0/0, Shi favored by al Or in the range of 5.0 to 20% by weight.
- insulation refers to the temperature of the interior of houses, tunnels, etc., which absorbs and reflects radiation emitted at night from the earth whose temperature has risen due to the absorption of solar heat during the daytime. Temperature and ground temperature).
- the inorganic compound used for forming the intermediate layer of the multilayer film is the same as the inorganic compound used for forming the outer layer described above.
- the inorganic compound is used in an amount of 1 to 2 parts by weight based on 100 parts by weight of the total amount of the ethylene / vinyl acetate copolymer and the ethylene / ⁇ -olefin copolymer (A-1) described later. It is used in a proportion of 0 parts by weight, preferably 1 to 18 parts by weight, and more preferably 2 to 15 parts by weight.
- component ( ⁇ -1) is an optional component and may be 0 parts by weight.
- naphthalene copolymer (A-1) is the ethylene used in forming the outer layer described above.
- ⁇ -olefin copolymer ( ⁇ ) ethylene having a density of 0.925 g Zcm 3 or less, preferably 0.880 to 0.920 g / cm 3 It is an ⁇ -refin copolymer.
- the weight ratio [(A) / (C)] between the ethylene ' ⁇ -olefin copolymer (A-1) and the ethylene-vinyl acetate copolymer (C) is 9 9 / / 1 to 1 Roh 9 9, it is rather the preferred 9 0 / / 1 0-1 0 Roh 9 0, is rather to prefer to be et al. in the range of sozzosozso.
- the intermediate layer of the multilayer film When forming the intermediate layer of the multilayer film, use ethylene in the weight ratio of ethylene-vinyl acetate copolymer to ethylene- ⁇ -olefin copolymer ( ⁇ -1) as described above. Thus, the thickness of the intermediate layer can be reduced.
- the weathering stabilizers used as needed when forming the intermediate layer of the multilayer film are the ultraviolet absorbers and the light stabilizers used when forming the outer layer described above.
- the light stabilizer was 0.00.0 parts by weight based on 100 parts by weight of the total amount of the ethylene / ⁇ -olefin copolymer (A-1) and the ethylene / vinyl acetate copolymer. It is used in an amount of 5 to 5 parts by weight, preferably 0.05 to 2 parts by weight, and more preferably 0.01 to 1 part by weight.
- component (A-1) is an optional component and may be 0 parts by weight.
- the ultraviolet absorber was used in an amount of 0.1 parts by weight based on 100 parts by weight of the total amount of the ethylene / ⁇ -olefin copolymer (A-1) and the ethylene / vinyl acetate copolymer. 0.05 to 5 parts by weight, preferably 0.05 to 2 parts by weight, more preferably It is used in an amount of 0.01 to 1 part by weight.
- component (A-1) is an optional component and may be 0 parts by weight.
- additives such as anti-fogging agents, anti-fog agents, antistatic agents, and heat stabilizers to the ethylene / vinyl acetate copolymer for forming the intermediate layer within a range that does not impair the purpose of the present invention. It can be blended with.
- an anti-fogging agent mainly containing a partially esterified product of the above-mentioned polyhydric alcohol and a higher fatty acid having 12 to 24 carbon atoms (including hydroxy fatty acid) is preferable. Commonly used.
- the antifogging agent is the above ethylene. 0 to 5 to 5 parts by weight, preferably 0 to 100 parts by weight of the total amount of -olefin copolymer (A-1) and ethylene'vinyl acetate copolymer It is used in a proportion of from 1 to 4 parts by weight, more preferably from 0.5 to 3 parts by weight.
- component (A-1) is an optional component and may be 0 parts by weight.
- the inner layer constituting the agricultural multilayer film according to the present invention is formed of the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′′), ( ⁇ ′′ ′). .
- An inorganic compound, a weather stabilizer, and an anti-fogging agent can be added to the copolymer ( ⁇ ) or the compositions ( ⁇ '), ( ⁇ ''), and ( ⁇ '').
- the inorganic compound is 1 to 3 parts by weight based on 100 parts by weight of the total amount of the copolymer ( ⁇ ) or the composition ( ⁇ ′). Used in parts by weight.
- the inorganic compound (B) is used at the above ratio when forming the inner layer of the multilayer film, a multilayer film having excellent heat retention can be obtained.
- the weathering stabilizers used as needed when forming the inner layer of the multilayer film are the above-mentioned ultraviolet absorbers and light stabilizers.
- the light stabilizer is preferably used in an amount of 0.005 to 5 parts by weight, based on 100 parts by weight of the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′′).
- the UV absorber is used in an amount of from 0.005 to 2 parts by weight, and more preferably from 0.01 to 1 part by weight.
- ( ⁇ '), ( ⁇ ' '), ( ⁇ "') 100 to 5 parts by weight, 0.005 to 5 parts by weight, preferably 0.00 to 5 to 2 parts by weight, More preferably, it is used in an amount of from 0.01 to 1 part by weight.
- the copolymer ( ⁇ ) or the composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '' ') used for forming the inner layer of the multilayer film may be added to a conventionally known antifogging agent, antistatic agent, heat Additives such as stabilizers can be blended within a range that does not impair the purpose of the present invention.
- an anti-fogging agent mainly containing a partially esterified product of the above-mentioned polyhydric alcohol and a higher fatty acid having 12 to 24 carbon atoms (including hydroxy fatty acid) is preferable. Commonly used.
- the antifogging agent is preferably used in an amount of 0.05 to 5 parts by weight, based on 100 parts by weight of the copolymer ( ⁇ ) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′′ ′). It is used in an amount of 0.1 to 3 parts by weight, more preferably 0.5 to 2 parts by weight. (Multilayer film)
- the multilayer film for agricultural use according to the present invention comprising the outer layer, the intermediate layer and the inner layer as described above, has a thickness of the outer layer of usually 3 to 100 m, preferably 10 to 80 m, More preferably, it is in the range of 20 to 70 / m, and the thickness of the intermediate layer is from 10 to 150 m, preferably from 20 to 120 m, more preferably.
- the inner layer has a thickness of 3 to 1001, preferably 10 to 80 ⁇ m, and more preferably 20 to 70 m and the total thickness of these layers is between 30 and 200 m, preferably between 50 and 50; L80 / m, more preferably between 70 and 15 It is in the range of 0 ⁇ m.
- the agricultural multilayer film according to the present invention has the following physical properties and characteristics.
- the Elmendorf tear strength is at least 90 kg / cm in the MD direction, preferably at least 100 kg Zcm, and at least 90 kgcm in the TD direction, preferably It is 100 kg cm or more.
- the dust impact strength at a thickness of 100 ⁇ m is 900 g or more, preferably 1,000 g or more.
- Tensile strength at break is the MD direction 3 5 0 kg / cm 2 or more, good or to rather is Ri der 3 7 0 kg Roh cm 2 or more and 3 in the TD direction 5 0 kg / cm 2 Thus, it is preferably at least 370 kg / cm 2 .
- the initial light transmittance at a thickness of 100 m is 90% or more, preferably 92% or more, and the light transmittance after 120 days of outdoor exposure is 85% or more. , Preferably 87% or more.
- Elmendle tear strength is based on JISZ1702. Perform a tear strength test in the MD and TD directions of the multilayer film. The dirt impact strength is determined by conducting an impact test according to JISZ1777 (dirt tip diameter 38 mm). Tensile strength at break is based on JISK6781, and under the following conditions, in the MD and TD directions of the multilayer film, constant crosshead moving speed tensile tester (Instron Co., Ltd.) The value was obtained by performing a tensile test using
- the 50-meter-thick agricultural multilayer film according to the present invention has a Daroth of usually 60% or more and a haze of usually 15% or less.
- the gross of the film was measured at an incident angle of 60 according to ASTM D523.
- the haze of the film was measured according to ASTM D1'03-61.
- the multilayer film for agricultural use according to the present invention as described above is obtained by mixing the components such as the polyethylene resin used in each layer of the multilayer film and the above-described additives, etc., and mixing the mixture with a Banbury mixer or a mixer. It can be prepared by melt-mixing with one mil, etc., and then laminating the outer layer, intermediate layer and inner layer by coextrusion inflation method or coextrusion T-die method. it can.
- Such multilayer films for agriculture are excellent in heat retention, dustproofness, and toughness. They can be spread over agricultural and horticultural facilities such as houses and tunnels, and can be used for a long time to grow useful crops. Can be used.
- Impermeable sheet
- the impermeable sheet is made of the ethylene. ⁇ -olefin copolymer ( ⁇ ) or Ethylene copolymer composition (A '), ( ⁇ '''), ( ⁇ ''') and, if necessary, rubber black, heat stabilizer, weather stabilizer, pigment, filler It is formed from known additives such as (excluding carbon black), lubricants, antistatic agents, flame retardants, and foaming agents.
- the impermeable sheet is combined with another base material, reinforcing material, drainage material, etc., and is formed of a layer comprising the copolymer (A) or the composition (A '), (A''),( ⁇ '''). May be an inner layer or an outer layer.
- the impermeable sheet has an elongation at tear of 1.5 mm (JISA 608, creep method, speed 200 mm / min) of 80% or more, and a thickness of 1.5 mm
- the elongation at the time of piercing is 5 mm or more, and the heat seal is performed using the currently used heat sealer at a set temperature of 500 t and a seal speed of m min.
- the peel strength (JISK 6328, speed 50 mmZ component) at the fused portion of the steel is preferably 10 kg / 20 mm or more.
- the impermeable sheet may hit objects with irregularities, especially sharp objects, the elongation at the time of tearing and piercing will not be sufficient to maintain the performance of the impermeable sheet. It is an important factor.
- a Leister hot air sheet welding machine 10E type As a heat sealer to be used in the field, a Leister hot air sheet welding machine 10E type is used. In the peeling test, two sheets were fused together at a set temperature of 500: 5 and a speed of 5 m using a hot air sheet welding machine 10E manufactured by Leister. After adjusting the condition at 23 "for 48 hours or more, a peel strength test was performed at a speed of 50 111 111 / min according to JISK 6328, and the peel strength was measured and used as an index of the fusion characteristics. The piercing test was performed using a universal testing machine manufactured by Instron, fixing the impermeable sheet to a jig with a diameter of 5 era, and a needle with a flat tip of 0.7 mm in diameter. Was pierced at a speed of 50 mm ", and the breaking strength Nosseat thickness (kg / mm) and elongation at breaking were determined.
- the water impermeable sheet according to the present invention can be easily and highly heat-sealed by a heat sealer actually used on site, and is therefore extremely preferable in practical use.
- Such impermeable sheets are excellent in mechanical strength such as tensile strength, tear strength, elongation at tear, piercing strength, and elongation at piercing, flexibility and fusing property.
- the multilayer film comprises a base film layer and the above-mentioned ethylene ⁇ -age olefin copolymer (A) or an ethylene copolymer composition ( ⁇ ') (A,'), ( A "')".
- the material for forming the base film is not particularly limited as long as it has a film forming ability, and any polymer, paper, aluminum foil, cellophane, or the like can be used.
- Such polymers include, for example, high-density polyethylene, medium- and low-density polyethylene, ethylene. Vinyl acetate copolymer, ethylene-acrylic acid ester copolymer, and polyester.
- Polymers such as onoma, polypropylene, poly-1-butene, poly-4-methyl-1-pentene, polyvinyl chloride, polyvinyl chloride Vinyl polymers such as nilidene, polystyrene, polyacrylate, polyacrylonitrile, Nylon 6, Nylon 66, Nylon 10 and Nylon 1 1, Nylon 12, 2, Nylon 61,0
- Polyamide-polystyrene polymers such as azinamide, polyethylene terephthalate, polyethylene Tele / Isolate, Polyb Examples include polyester polymers such as polyethylene terephthalate, polyvinyl alcohol, ethylene / vinyl alcohol copolymer, and polycarbonate polymers.
- the polymer film may be non-oriented or uniaxially or biaxially stretched.
- the substrate can be appropriately selected depending on the use of the multilayer film.
- a base material can be appropriately selected depending on an object to be packaged.
- the packaged product is a food that is easily corroded
- a resin having excellent properties can be used.
- the object to be packaged is confectionery or fiber packaging, it is preferable to use polypropylene having good transparency, rigidity and resistance to water permeation.
- the copolymer ( ⁇ ) or the composition (A '), (A'')-( ⁇ ',') is directly extruded onto the substrate.
- the base material may be used.
- a known method such as applying an anchor coating agent such as an organic titanium-based, polyethyleneimine-based, or isocarbonate-based adhesive, or using an adhesive polyolefin or high pressure
- an anchor coating agent such as an organic titanium-based, polyethyleneimine-based, or isocarbonate-based adhesive
- the copolymer ( ⁇ ) or the composition ( ⁇ '), ( ⁇ '''), ( ⁇ ''') is extruded after the underlay resin layer of the polyethylene May be used.
- Such multi-layer films are used in various packaging bags, such as liquid soups, pickles, garlic and other water-based packaging bags, miso, jam and other pasty packaging bags, sugar, flour, sprinkles, etc. It is suitable for use in packaging bags for powdered products, pharmaceutical tablets, and granules, and plays a role as a sealant layer in such applications.
- Multi-layer film for packaging
- the multilayer film for packaging is composed of at least a three-layer film having an outer layer, one or more intermediate layers, and an inner layer.
- the resin composition used for the outer layer and the inner layer is different from the resin composition used for the intermediate layer.
- the outer layer and the inner layer are each made of ethylene.
- the ( ⁇ ) or ( ⁇ ';), ( ⁇ ") ( ⁇ ' '' ') forming the outer layer and the inner layer may be the same or different from each other.
- Lebutene-based (co) polymer is 1-butene homopolymer or 1-butene _
- This 1-butene (co) polymer has an MFR of 0.1 to 5 g for 10 minutes, preferably 0.5 to 2 g for 10 minutes, and a density of 0.890 to 10 g. 0.95 g / cm 3 , preferably in the range of 0.895 to 0.92 Og / cm 3 ( this 1-butene (co) polymer is It can be manufactured using a zigzag catalyst.
- the 1-butene (co) polymer is a copolymer of 1-butene (co) polymer and ethylene-propylene 1-butene random. the total 4 1 0 0 wt% of coalescing, 4 0-1 0 0 wt 0/0, preferred and rather 5 0-9
- This ethylene propylene 1-butene random copolymer can be produced using a conventional Ziegler-Nuttan catalyst.
- the ethylene-propylene 1-butene random copolymer is
- the 1-butene-based (co) polymer and the ethylene are contained in the resin or the resin composition constituting the intermediate layer, similarly to the resin or the resin composition constituting the outer layer and the inner layer described above.
- Various stabilizers, compounding agents, fillers and the like can be added in addition to the propylene 1-butene random copolymer in a range that does not impair the object of the present invention.
- an antifogging agent, an antistatic agent, etc. can be added to improve the appearance of the contents, and an ultraviolet ray preventing agent, etc. can still be added to protect the contents.
- Lubricants can also be added.
- the intermediate layer is composed of one or two or more layers in which the 1-butene (co) polymer and the ethylene-propylene-lebutene random copolymer are blended in an amount within the above range. It may be.
- the multilayer film for packaging according to the present invention is usually formed to a thickness of 10 to 20 m, the intermediate layer is adjusted to 1 to 5 m, and the outer layer and the inner layer are each adjusted to a thickness of 2 to 8111. You. Depending on the application, it is also possible to form another resin layer outside the inner layer and / or outer layer o
- the multilayer film for packaging is prepared by mixing the components forming each layer using various types of blenders, and then using an ordinary molding method, that is, an extruder provided with a plurality of die lips. It is manufactured by supplying it to a ration film molding machine or a T-die molding machine.
- Multi-layer packaging film has a vertical and horizontal Elmendorf tear strength It is desirable that the degree ratio (horizontal direction and vertical direction) be 9.1 or less, and in this case, the film can be used as an excellent packaging film.
- the cut is cut by a knife running in the lateral direction of the film. It can be evaluated based on the ratio of the Elmendorf tear strength. If the ratio of the Elmendorf tear strength is 9.1 or less, it is judged that the cutting property of the automatic packaging machine is good. You.
- the multilayer film for packaging according to the present invention has an Elmendorf tear strength ratio of 9.1 or less, is easy to cut by an automatic packaging machine, and is capable of continuous packaging at a high speed. Work is possible.
- the Elmendorf tear strength is measured by a method in accordance with JIS Z-1702. -
- the multilayer film for packaging according to the present invention is excellent in transparency and has a haze value of usually 2.0% or less.
- the multilayer film for packaging according to the present invention is excellent in finger press restoring property, has an initial restoring rate of 70% or more, and has a residual strain of 5.5 mm or less.
- the multilayer film for packaging according to the present invention has excellent low-temperature sealing properties, and the sealing strength of the film that has been heat-sealed at 90? 1 is 0 0 kg / cm 2 or more.
- Such a multilayer film for packaging has excellent mechanical strength properties, transparency, and low-temperature heat-sealing properties.
- the film has good resilience and is suitable for packaging foods and daily necessities.
- the film for stretch packing is made of the same ethylene and ⁇ -olefin (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ ',') and, if necessary, other resin components, for example, having a density of 0.88 0-0.895 g / cm 3 of ethylene-propylene random copolymer, density of 0.88 0-0.895 cm 3 of ethylene-butene lan Dam copolymer, density force? It is formed from 0.910 to 0.924 g / cm 3 of high-pressure ethylene (vinyl acetate) copolymer.
- Such another resin component is added in an amount of 0 to 40 parts by weight based on 100 parts by weight of the copolymer (A) or the composition (A ′), ( ⁇ ′′), ( ⁇ ′′ ′′). Used in parts by weight.
- Compositions composed of other resin components include slip agents, antiblocking agents, antifogging agents, antistatic agents, and contents.
- Various additives, such as an ultraviolet ray inhibitor, can be incorporated in order to protect the object, as long as the object of the present invention is not impaired.
- higher fatty acid amides such as oleic acid amide, stearate amide, and erucic acid amide are preferably used, and antiblocking agents are also used.
- inorganic substances such as silica and talc are preferably used.
- antistatic agent for example, glycerin fatty acid esters and sorbitol fatty acid esters are preferably used.
- the film composed of the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′ ′) is a film having a necessary moderate adhesiveness (stickiness).
- the film for stretch packaging according to the present invention comprises a film comprising the above-mentioned copolymer (A) or composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′, ′). Contains lum.
- the stretch packaging film according to the present invention usually has a thickness of 10 to 50 / m.
- the stretch packaging film may have a single-layer structure or a multilayer structure.
- Single-layer stretch packaging films can be manufactured by ordinary film forming methods such as the inflation method and the T-die method.
- Multilayer stretch packaging films can be formed by a conventionally known molding method, for example, an extrusion film molding machine having an extruder equipped with a plurality of die lips, or a T-type film. It can be manufactured using a molding device such as a die molding machine.
- the stretch packaging film according to the present invention has a higher tensile breaking elongation than conventional low-density polyethylene or ethylene.vinyl acetate copolymer films. Suitable for stretch stretching of 300% to 600%, high stretch or deformed products (two or more products with different shapes).
- the film for stretch packaging according to the present invention is added after packaging compared to the conventional low-density polyethylene or ethylene / vinyl acetate copolymer film.
- the packaged material has low stress and does not deform the packaged material, and the film strength after packaging is strong and the film appearance is good.
- the stretch packaging film according to the present invention is a film comprising one sheet of the copolymer (A) or the composition ( ⁇ '), ( ⁇ ',), ( ⁇ '' '). Film or a film layer comprising the copolymer ( ⁇ ) or the composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′,), or one or more layers. It may be a film having a multilayer structure having two or more film layers.
- Multilayer stretch packaging film for example, a multilayer film in which a non-adhesive surface and an adhesive surface are shared by a stretch packaging film, is prepared by using the copolymer ( ⁇ ) or the composition ( ⁇ '), ( ⁇ "), and ( ⁇ ''') as the intermediate layer, and on one surface of the intermediate layer, as a non-adhesive layer, a high-density linear low-density poly
- a film layer made of ethylene is formed so as to have a thickness of about 5 to 30% with respect to the total thickness of the stretch packaging film, and an adhesive layer is formed on the other surface.
- a film layer composed of a composition containing 2 to 10% by weight of a film or the like is to have a thickness of about 5 to 30% with respect to the total thickness of the film for stretch packing. It can be obtained by a method such as forming into a piece.
- Such stretch packaging film can be stretched at a high level and has an appropriate level of adhesiveness.Excessive stress is not applied to the package after packaging, and the strength characteristics and appearance after packaging are improved. Excellent, with no excessive stickiness in the film, and excellent in productivity, packaging, handling, etc.
- Wrapping film is an improved packaging or wrapping film, and more specifically, improved transparency, toughness, and extrusion.
- Shrink-, skin, stretch, hot tack and vacuum wrap films showing processability and irradiation crosslinking efficiency.
- These films include at least one kind of ethylene-monoolefin copolymer (A) or an ethylene-based copolymer composition ( ⁇ '), ( ⁇ ' ''). ), ( ⁇ '' ') at least one layer, and may be biaxially oriented, multi-layered, and have ⁇ or barrier properties Such a configuration may be adopted.
- the ethylene / one-year-old olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ '''), ( ⁇ '') contains: To the extent that they do not interfere with the improved film properties they have found, additives, such as antioxidants (such as hindered phenol systems (such as Irganox (produced by Chiba Gey Corp.)) Trademark) 1010), phosphites (eg, Irgafos (trademark) 168, etc.), cling additives (eg, It can also include, for example, polyisobutylene (PIB), PEPQ TM (trademark of Sandoz Chemical, whose primary material is believed to be biphenylphosphonite), pigments, colorants, and fillers.
- antioxidants such as hindered phenol systems (such as Irganox (produced by Chiba Gey Corp.)) Trademark
- phosphites eg, Irgafos (
- the film produced can also contain additives that enhance its antiblocking and coefficient of friction characteristics, including: Non-limiting forces include untreated and treated silicon dioxide, talc, calcium carbonate and clay, and the like, as well as primary and secondary fatty acid amides, silicone coatings, and the like.
- Non-limiting forces include untreated and treated silicon dioxide, talc, calcium carbonate and clay, and the like, as well as primary and secondary fatty acid amides, silicone coatings, and the like.
- additives are added to enhance the anti-fogging properties of the film. It is also possible to do so.
- Further additives such as quaternary ammonium compounds, alone or with EAA or quaternary ammonium compounds, which improve the antistatic properties of the film and enable packaging of electronically sensitive goods It can be added in combination with other functional polymers.
- ⁇ '), ( ⁇ ''), and ( ⁇ ''') are the only polymers of this film, regardless of whether the structure to be used is a single layer or a multilayer structure. It can be used as a component.
- this ethylene / ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ '''), other polymer Blending one class can improve the film's processability, film strength, heat sealability or adhesion.
- LUM maintains improved performance and, in certain cases, provides improved 'combinations of properties. Suitable for blending with this ethylene 'mono-olefin copolymer (A) or ethylene copolymer composition ( ⁇ ';), ( ⁇ '') ( ⁇ , ',) Isn't the force limited to some materials?
- high-pressure low-density polyethylene LDPE
- PB polybutylene
- 'and ⁇ —Olefin polymers such as high-density polyethylene, medium-density polyethylene, polypropylene, ethylene-propylene copolymer—types, linear low-density polyethylene (LLDPE) and ultra-low-density poly
- the forces f including ethylene, and the graphite-modified polymers and their blends, etc. include those with varying densities, MWDs, and combinations of monomers or comonomer, such as Smith.
- Orefu fin copolymer (A) or ethylene Le emissions copolymer composition ( ⁇ '), ( ⁇ ' ,), ( ⁇ ',') is preferably Comprises at least 50% of the blend composition, more preferably at least 80% of the blend composition.
- its outer film layer also referred to in the art as "outer layer” or "surface layer”
- the sealant layer be This ethylene.
- -90-It consists essentially of things (A '), (A' '), and ( ⁇ ' '').
- the oriented and unoriented film structures of the present invention can be manufactured using conventional simple hot blown bubble, cast extruded or extruded coating techniques, and, in particular, in the case of oriented films, a more manual process. It can be manufactured using techniques such as "tenter framing” or “double bubble” or “trapped bubble” methods. is there.
- the forces using "stretched” and “oriented” in an interchangeable manner ⁇ is-in effect, for example, by internal air pressure or This occurs as a result of stretching the film, such as by a tenant frame that presses the edge of the film.
- the packaging and wrapping free film of the present invention may be a single-layer or multi-layer film.
- the monolayer may comprise at least one ethylene ( ⁇ ) -olefin copolymer ( ⁇ ) or an ethylene copolymer.
- polymer composition ( ⁇ '),' ( ⁇ ''), ( ⁇ '') and least for the 1 0 wt 0/0 also, preferably be 3 0 Shigekazu weight 0/0 contains a rather small, And at least one type of ethylene copolymer () or an ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ ''') which may contain span the 1 0 0 wt 0/0.
- Ethylene used for the purpose of forming this monolayer.
- One-year-old olefin copolymer ( ⁇ ) or ethylene-based copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ ''') Depends on the properties desired in the film, and in the composition of the film, the ethylene / monoolefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ )
- these polymers are partially based on the fact that they are compatible with each other under the processing and use conditions. Select the type.
- these ethylene polymers can be used as the ethylene-based one-year-old olefin copolymer ( ⁇ ) or the ethylene-based copolymer composition ( ⁇ ':), ( ⁇ '''), ( ⁇ These selections are made based in part on the compatibility shown for, ,, ').
- any of these five different packaging methods can use any of these monolayers, but as a practical matter,
- the film is best suited for use in stretch overwrap and envelope wrapping methods.
- the ethylene ' ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ';), (() of the present invention As required for stretch wrapping, the ethylene ' ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ';), (() of the present invention.
- Single-layer films made from ( ⁇ ') and ( ⁇ '') show surprisingly good oxygen transmission rates.
- "In-store" which is particularly beneficial and through the transmission of oxygen-"adds" the shiny red color desired by fresh red meat This will be possible.
- Films useful for packaging individual red meat sections will typically exhibit minimal shrinkage and good stretchability. The film preferably exhibits oxygen permeability and does not permanently deform the film, nor does it consume the meat without making the meat unattractive. Good elasticity so that people can inspect _
- One particularly preferred monolayer suitable for use in the stretching overlap method is an ethylene ' ⁇ -olefin copolymer ( ⁇ ) or an ethylene-based copolymer composition ( ⁇ '). , ( ⁇ ''), ( ⁇ ''), and ethylene / na, /?-Unsaturated carbonyl copolymers, such as ⁇ VA, EAA) Ethylene Z meta-acrylic acid Z (E MAA), And blends thereof with alkali metal salts (e.g., ionomers), esters, and other derivatives.
- ⁇ VA, EAA Ethylene Z meta-acrylic acid Z
- alkali metal salts e.g., ionomers
- the ethylene-like one-year-old olefin copolymers (A) described herein may be used as the core layer, outer surface layer, intermediate layer and / or inner sealant layer of this structure. Can be used.
- ethylene monoolefin copolymer ( ⁇ ⁇ ⁇ ⁇ ) or ethylene copolymer composition described in this specification is used.
- At least one of ( ⁇ ';), ( ⁇ ''), and ( ⁇ ''') shall be at least one heat-sealable outer layer provided in the film structure. Used. This heat-sealable outer layer can be co-extruded with another layer (s) or _
- the heat-sealable outer layer may be laminated to another layer (s), for example, as in L; Wilraer A. J enkins and James P. Harrington, “Packaging Foods WithPlasticsJ ( 1991), or "Coextrusion For Barrier Packaging” by WJ Schrenk and R. Finch on Society bf Plastics Engineers RETEC Proceedings, June 15-17 (1981), pages 211-229. Can be implemented.
- the ethylene described in the present specification is used.
- ⁇ — olefin copolymer (A) or ethylene copolymer composition ( ⁇ ′), ( ⁇ '') And ( ⁇ ''') make up at least 1'0 percent of the entire multilayer film structure.
- Other layers of the multilayer structure include, but are not limited to, a barrier layer and / or a tie 'layer and a ply or structural layer. In these layers, various materials can be used, and some of them may be used as two or more layers in the same film structure.
- the strengths of these materials include foils, nylons, ethylene vinyl alcohol (EVOH) copolymers, polyvinylidene chloride (PVDC), polyethylene terephthalate ( PET), Oriented Polypropylene (OPP), Ethylene Z Vinyl Acetate (EVA) Copolymers, Ethylene Noacrylic Acid (EAA) Copolymers, Ethylene Methacrylic Acid (EMA A) Copolymer Class 1, ULDPE, LLDPE) HDPE, MD PE, LMD PE, LDPE, ionomers, graphitic modified polymers (for example, maleic anhydride graphitized polyethylene) and paper. included.
- the multilayer film structure includes two to seven layers.
- the multilayer film structure includes at least three layers (eg, a ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ structure), where each outer layer has at least three layers. Also one kind of ethylene ⁇ . Contains one-year olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ,'), ( ⁇ ','), and contains at least 1
- One core layer or hidden layer is low-density polyethylene (LDPE) manufactured by a high-pressure method.
- LDPE low-density polyethylene
- Such multilayer film structures exhibit surprisingly good optical properties while maintaining good overall film strength properties. In general, the proportion of layers in this film structure is such that the core layer is a major part of the film structure in terms of percent of the overall structure. is there.
- This core layer must be at least 33 "percent of the entire film structure (eg, in a three-layer film structure, each" ⁇ "outer layer is hand constituting the 3 3 weight 0/0 of the total off Lee Lum structure, a core layer of LDPE ( " ⁇ " layer) constitutes the 3 3 wt% of the total full i Lum structure) .
- the core layer of this LDPE preferably comprises at least 70 percent of the total film structure.
- a hidden additional layer may be incorporated in the film structure as long as the optical characteristics are not deteriorated.
- each "A" outer layer has at least Also, one kind of ethylene-like one-year-old olefin copolymer (A) or ethylene-based copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ ''') has the whole film structure. Ri you in an amount of 1 to 5 weight 0/0 of the object, and " ⁇ " core layer force?
- LDPE in an amount of 70% by weight of the structure.
- LDPE suitable for multi-layer full I Lum structure showing improved optical transparency, generally of 0. 9 1 5 g cm 3 or 'et 0. 9 3 5 g / era 3 density, shows a 0.1 / / 10 min 1 0 8/10 minutes main Le preparative Lee Nde' click scan and least for the 1 gram melt tension also.
- the ethylene ' ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ '') is the general, 0. 8 5 g / cm 3 power, et density of 0. 9 6 g Z cm 3, preferably a density of 0. 9 2 g Zcm 3 from 0. 9 g Zcm 3 is It shows a melt index (I2) of 0.2 g 10 minutes to 10 g, preferably 0.5 g / 10 minutes to 210 minutes.
- (A) / VLDPE / (A) and LLDP EZ (A) / LLDPE film structures which are alternatives to regular films such as PVC, as well as a variety of fresh foods, such as Retail cuts of red meat, fish, poultry, vegetables, fruits, cheeses, etc., as well as those destined for retail labeling and the benefit of the entry of environmental oxygen or the need to breathe properly Suitable for stretching and wrapping other foodstuffs that have a texture.
- these are non-shrinkable films that exhibit good oxygen permeability, stretchability, elastic recovery and heat-sealing properties (eg, do not have a biaxial orientation induced by double bubble processing).
- the production of these films makes them available to wholesalers and retailers in one of the usual forms, for example, in the form of stock rolls, and the usual packaging equipment. So that it can be used with
- these multilayer film structures include an oxygen barrier film (eg, SARAN®, a film made from polyvinylidene chloride polymer manufactured by Dow Chemical Company). , Or Kuraray of America, E.C., Ethylene Z vinyl alcohol copolymer manufactured by ompany of America (a wholly owned subsidiary of Kuraray Ltd.)
- the first piece of meat ie, a large piece of meat that is transported to a special store for further cutting for the purpose of consumption by a particular consumer
- oxygen barrier properties are important, as described by Davis et al. In U.S. Patent No. 4,886,690, the first section of which is a butcher's butcher. / On arrival at the food trader The jar by a removable, the oxygen barrier further also "pull ⁇
- -99-Can be designed to be “peelable”, and the peelable structure or design should be “case-ready” vacuum envelope of the individual parts. Particularly effective in packaging, this eliminates the need to repackage in an oxygen permeable package to add a bright red color.
- the benefits of using preformed film structures include increased stretchability, reduced film thickness for a given stretch requirement, and reduced heat up and cycle time. It can supplement or avoid a given individual packaging operation, such as doing so.
- the thickness of these single-layer or multilayer film structures can be varied. However, the thickness of both single and multilayer film structures described herein typically ranges from 0.1 mil (2.5 micrometer) to 50 mil (12 micrometer). 70 micrometer), preferably from 0.4 micrometer (10 micrometer) to 15 millimeter (381 micrometer), especially 0.6 micrometer. The range is from 1 mi (15 micrometer) to 4 mi (102 micrometer).
- Ethylene ' ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ ''') described in this specification.
- the film structure made from) is, surprisingly, a normal Ziegler polymer It shows more efficient irradiating cross-linking than the linear ethylenno alpha-refined polymer.
- films with differentially or selectively cross-linked film layers are provided. Lum structures can be manufactured.
- the ethylene-a-olefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ '), may be used in conjunction with pro-rad agents, for example, in US Pat. No. 4,957,790. War ren power? Crosslinking inhibitors, such as triaryl cyanurate and / or antioxidants, as described, for example, butylated hydroxylates as described by Evert et al. In US Pat. No. 5,055,328. Can be mixed with ruen etc.
- Irradiation is also effective for increasing the shrinkage temperature range and the heat sealing range of these film structures.
- U.S. Pat. No. 5,089,321 discloses a multilayer foil having at least one heat-sealable outer layer and at least one core layer exhibiting good radiation crosslinking performance.
- a film structure is disclosed.
- beta irradiation with an electron beam source and gamma irradiation with a radioactive element, such as Cobalt 60 are the most common methods of producing film crosslinks.
- thermoplastic film is produced by a blown film method, and then exposed to a radiation source (beta or gamma) with an irradiation dose of up to 20 Mrad. causes cross-linking of the lum.
- a radiation source beta or gamma
- an irradiation dose of up to 20 Mrad.
- the heat shrinkable film or the packaging film is manufactured by irradiating the pellet or film before the final film orientation, these films shall be Consistently, higher shrink tensions tend to lead to higher package bending and paperboard curvature, and conversely, orientation prior to irradiation can result in a higher film yield.
- the contraction tension will be lower.
- the ethylene ( ⁇ ) -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ "), ( ⁇ ''') of the present invention ) Indicates that the free shrinkage property is essentially unaffected, regardless of whether irradiation is performed before or after the final film orientation.
- Irradiation techniques effective for performing the processing of the film structures described herein include techniques known to those skilled in the art. Preferably, this irradiation is achieved using an electron beam (beta) irradiator at a dose level of 0.5 Mrad to 20 Mrad. Ethylene as described in the present specification.
- ⁇ Shrinkage prepared from ethylene copolymer (A) or ethylene-based copolymer composition () ′), ( ⁇ ′ ′), ( ⁇ ′ ′ ′))
- the film structure is also expected to exhibit improved physical properties due to the lower degree of chain scission resulting from this irradiation treatment.
- the hot-tack film of the present invention can be used as an oriented or unoriented single-layer or multi-layer structure, and can be used as a Knogoo ⁇ -box and a foam film. . Shows usefulness in sealing operation.
- An example of using the film of the present invention in a form-filling operation is described in Wilmer A. Tenkins and James It is described in P. Harrington, “Packaging Foods With Pstics”, (1991), pp. 32-83. M. Bakker (April 1982); "Packaging Machinery Operat ions: No. 8, Form-Fi ⁇ i-Sealing, A Se1 f-Instructional Course" by .ij. Davis of the Packaging Machinery Manufacturers Institute.
- the film for high-load packaging is a film comprising the ethylene-olefin copolymer (A) or the ethylene-based copolymer composition (A,;), ( ⁇ ''), ( ⁇ ''''). Film and the thickness of the film is at least about 1.25 mils (31 micron) and is between 0.923 and 0.95 grams / cubic centimeter. Having a film density in the range of 0.1 cm (g Z cc), and typically at least 30 percent less than the polyethylene film currently used in industry. Shows high tear strength or impact resistance You. This film can be used in heavy-duty packaging and transport applications and also in hot-fill packaging applications.
- the term “medium modulus” is used to refer to a new film, which means that the calculated film density is in the range of 0.923 to 0.95 g / cc. Is used.
- the term “calculated film density” is used to mean the film density as calculated from the known weight of the constituent polymer class or layer and the measured density after annealing. Is used.
- the term "thick” is used to refer to a new film and to mean a film thickness greater than or equal to about 1.25 mil '(31 micron). Used.
- variable stroke extrusion refers to the distance between the annular die for film and the height of the stalk, that is, the point of bubble inflation, during the production of the blown film 0 inches (0 centimeters). This means that it can be changed over more than 144 inches (366 centimeters).
- the term encompasses both the well known pocket blown film extrusion and Stoke blown film extrusion. In this document, it means that the distance between the film ring die and the air ring is equal to or greater than 30 inches (76 centimeters).
- high-stroke extrusion is used in the usual sense.
- the term “hot filling” refers to performing a packaging or product filling operation at a product temperature of 45 or higher.
- high load generally refers to large quantities or a single package weight of 10 pounds. (4.5 kilograms) refers to the packaging of industrial items that are greater than or equal to 4.5 kilograms.
- the tear resistance of the films of the present invention is measured in accordance with ASTM D192 and reported in grams. The tear resistance is measured in the machine direction (MD) and in the cross direction (CD). In this specification, the term “tear strength” is used to express the average between MD and CD tear resistance values, which are also reported in grams. The impact resistance of the film of the present invention is measured according to ASTM D179.
- the calculated film density of the medium modulus film of the present invention is 0.923 g / cc to 0.95 g / cc, especially 0.926 g / cc to 0.9. 48 / cc, and more particularly in the range of 0.93 g / c to 0.945 / cc.
- the film thickness is generally greater than about 1.25 mils, especially in the range from 1.5 mils to 8.75 mils, and more particularly in the range from 2 mils to 8 mils.
- the tear strength or impact resistance of this new film is comparable to that of the prior art with almost the same film density, melt index and film thickness. It is at least 30% higher than the tear strength or impact resistance of the polyethylene film.
- This new film can be conveniently formed into a bag for heavy duty packaging and ⁇
- This new film can be manufactured by variable-stalk blown extrusion.
- the production of films by blown film extrusion is well known. See, for example, U.S. Pat. No. 4,632,801 to D0wd, which describes a typical process for film extrusion.
- the polymer is introduced into a screw extruder, the polymer is melted therein, and is advanced under pressure through the extruder.
- the molten polymer is extruded through an annular die for film to produce a molten tube.
- the tube is then inflated by supplying air into the annular die to create a "bubble" having the desired diameter.
- the bubble is crushed to form a ray flat film.
- the final thickness of this film is adjusted by the extrusion rate, bubble diameter and nip speed, and these can be adjusted by variables such as screw speed, haid-off rate and hoisting speed It is. Increasing the extrusion rate while keeping the bubble diameter and nip speed constant increases the final film thickness.
- Typical blown extrusion methods can be generally categorized as "Stoke” or “Bocket” extrusion.
- a place for Stoke extrusion If so, bubble inflation and inflation occurs well above the annular die and the adjustment is made.
- the tube is maintained at about the same diameter as the film annular die until the molten tube expands at least 5 inches (12.7 centimeters) above the annular die.
- an air ring which usually has a single lip structure
- extrusion improves molecular relaxation and thus reduces the tendency for over-orientation in one direction, thereby obtaining balanced film properties. It is known that it will be possible. As the height of the stalk, or inflated portion, increases, the transverse (CD) characteristics generally improve, thereby improving the average film characteristics.
- High molecular weight polyethylene compositions such as high molecular weight high density polyethylene (HMW-HDPE) and high molecular weight low density polyethylene (HMW-LDPE), which guarantee sufficient bubble stability When extruding blown films, the extruding process, especially high extruding process, is very useful.
- Pocket Extrusion is more widely used than stock extrusion, and is generally a polyethylene composition having a lower molecular weight and lower melt strength, such as linear low density poly. Suitable for ethylene (LLDPE) and ultra low density polyethylene (ULDPE).
- Both single-layer and multi-layer films can be produced by stalk and pocket extrusion, and the films of the present invention can be used in both single-layer and multi-layer structures.
- the multilayer film can be manufactured by any technique known in the art, including, for example, co-extrusion, lamination, or a combination of both. But power?
- the preferred thick medium modulus polyethylene film of the present invention is a single-layer film structure. -The ethylene / ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ”) used in the production of the film of the present invention.
- additives such as antioxidants, phosphites, cling, additives, Standostab PEPQ TM (supplied by Sandoz), pigments, colorants and fillers. It is possible to include the improved tear and impact resistance disclosed by the Applicants to the extent that the above additives and materials do not interfere .. Although not generally required, they also have antiblocking and antiblocking properties. Additives that enhance the coefficient of friction characteristics, including, but not limited to, primary, secondary and untreated and treated silicon dioxide, talc, calcium carbonate and clay. (Including substituted fatty acid amides), exfoliation Is also possible with this to contain such sheet re co down dressing off I Lum of the present invention.
- an electronic improved antistatic properties indicated full I Lum of the present invention
- Additional additives such as quaternary ammonium compounds, alone or in the form of ethylene-acrylic acid (EAA) copolymers or others, to enable high-load packaging of sensitive products It is also possible to add in combination with the above functional polymers.
- the improved strength properties of the new film allow for the addition of recycled and scrap materials to the film composition used in the manufacture of the new film.
- the diluent polymer can be mixed or blended in amounts greater than typically possible using prior art polyethylene film compositions, and the new fibres. Lum may also provide or retain the performance characteristics desired for successful use in heavy duty packaging and shipping applications.
- Suitable diluent materials include, for example, elastomers, rubbers, and anhydride-modified polyethylenes (eg, graphitized polybutylene and maleic anhydride).
- LLDPE and HDPE as well as high-pressure polyethylenes, such as low-density polyethylene (LDPE), ethylene-no-acrylic acid (EAA) copolymers, and ethylene // vinyl acetate (EVA) copolymers.
- LDPE low-density polyethylene
- EAA ethylene-no-acrylic acid
- EVA ethylene // vinyl acetate copolymers.
- EMA ethylene methacrylate
- the present invention is a multilayer film that includes at least two layers, has substantial tackiness on one side, and is suitable for use as a stretch wrap material.
- the new multilayer film comprises at least one ethylene ⁇ -olefin having a density of at least about 0.90 g / cc or about 0.90 g / cc.
- a backing layer comprising at least one film-forming orophine polymer composition having a density of about 0.90 g / cc, and optionally at least At least one core or structural layer comprising at least one high strength ethylene polymer composition.
- the surface layer shows noticeably less tackiness than the back layer.
- the core or structural layer can be varied to meet specific film strength requirements.
- a film made with one-sided adhesiveness is stretch-wrapped for wrapping or holding small or large articles. Stretch band and tension winding Particularly useful for operation.
- the single-sided adhesive film of the present invention is provided without the need for an adhesive additive or a functional polymer.
- Advantages of the present invention include reduced or eliminated die lip build-up, accumulation and migration of low molecular weight materials. This means that cleaning and holding times during film production and wrapping operations are reduced. Problems with adhesion to adjacent articles and packaging and contamination, surface retention of dust or debris are also reduced.
- Another aspect of the present invention provides a single-sided tacky film of a class of polymers having similar rheology and monomer chemistry, thereby providing improved melt viscosity and recycle matching during coextrusion. It is to facilitate good polymer compatibility for the crucible.
- Another aspect of the present invention is a single-sided adhesive film wherein the high tack does not decrease when the film is under stretching conditions and the film exhibits significant stretch and non-stretch tack.
- the amount of sticking is related to the density of the polymer or blend that forms the back and front layers of the film, with the adherability improving as the polymer density of the back layer decreases. And was discovered.
- the backside layer of the present invention has a backside layer density of less than 0.90 g Zcc, preferably 0.85 g / c (: -0.89 g Zcc, most preferably When it is in the range of 0.86 g / c (: to 0.88 g / cc, it shows substantial adhesion to the surface layer.
- the density of the surface layer of the present invention is 0.90 g / cc. cc or more, preferably in the range of 0.91 g / c ( ⁇ 0.96 g / cc, more preferably in the range of 0.93 g / cc to 0.95 g / cc.
- a more preferred density range of the surface layer from 0.93 g / cc to 0.95 g / cc gives a single-sided adhesive film with equal stretched and unstretched tackiness.
- the density of the core layer or structural layer included in the multilayer film of the present invention can be varied to meet the overall film strength requirements depending on the end use.
- the ethylene polymer having a density of 0.90 g Zcc or less than 0.90 g // cc constituting the backside layer of the present invention is a very low-density polyethylene (VLDPE); Includes polymer (A) or composition ( ⁇ '), ( ⁇ '), ( ⁇ , ''), and blends thereof.
- the backside layer comprises a copolymer ( ⁇ ) or a composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '' ').
- the film-forming polymer composition having a density greater than 0.90 g Zcc which constitutes the surface layer of the present invention, is composed of propylene and ethylene polymers such as polypropylene and ethylene propylene copolymer.
- the surface layer is made of polypropylene, such as MDPE or HDPE, in a blend with MDPE alone in blend, and is preferred for its ability to provide equal stretch and non-stretch tack. O, o
- the ethylene polymers constituting the core or the structural layer of the present invention include low-density polyethylene (LDPE), medium-density polyethylene (MDPE), high-density polyethylene (HDPE), Copolymer (A) or composition (A ') ( ⁇ ' '), ( ⁇ ' ''), heterogeneous and homogeneously branched linear low-density polyethylene (LDPE), heterogeneous and homogeneously branched Contains very low density polyethylene (VLDPE).
- VLD and LLD are well known to those skilled in the art of linear polyethylene. These include Zigler's natur solutions, slurry or gas phase polymerization processes, and coordination metal catalysts such as those described in Anderson et al., US Pat. No. 4,076,698. Manufactured using These Ziegler type linear polyethylenes are not uniformly branched and they have low melt tension. Also, these polymers are low density and do not exhibit substantial amorphousness. Because they inherently have a substantial high density (crystalline) polymer portion. At densities less than 0.90 g / cc, these materials are very difficult to produce using conventional Ziegler-Natta catalysts and very difficult to pelletize. It is difficult. The pellets are sticky and easy to clump together. ⁇
- VLDPE and LLDPE are also well known to those skilled in the art of linear polyethylene. See, for example, the disclosure of Elston U.S. Pat. No. 3,645,992. They are produced in solution, slurry or gas phase processes using zirconium and vanadium catalyst systems. Et al. In U.S. Pat. No. 4,937,299 describe a process using a metallocene catalyst. Is this second class of linear polyethylene a homogeneously branched polymer? As with Ziegler-type non-uniform linear polyethylene, they have low melt tension.
- -Ethylene polymer composition used for the back layer film-forming olefin polymer composition used for the front layer, and high-strength ethylene used for the core or structural layer of the present invention.
- the renpolymer composition is an ethylene polymer produced by homopolymerization of ethylene or by interpolymerization of ethylene with small amounts of various monomers.
- Additives such as adhesive additives, adhesives (eg PIB), slip and antiblocking agents, antioxidants (eg IrganoxlOlO or Oxygen supplied by obstacle phenols such as Ciba Geigy) Irganoxl076), phosphites (eg Irgafosl68 supplied by Ciba Geigy), stand stubs PEPQ (supplied by Sundose), pigments, colorants, fillers, and processing aids
- adhesive additives eg PIB
- slip and antiblocking agents eg IrganoxlOlO or Oxygen supplied by obstacle phenols such as Ciba Geigy) Irganoxl076)
- phosphites eg Irgafosl68 supplied by Ciba Geigy
- stand stubs PEPQ supplied by Sundose
- pigments colorants
- fillers fillers
- processing aids Although not required to achieve the desired results of the invention, it
- the multilayer film of the present invention can be formed from two or more film layers, including AZB and AZBZC structures, by film laminating and / or co-extrusion techniques, and by blowing techniques known in the art. Alternatively, it can be manufactured by a cast film extruder. However, preferred structures are those produced by co-extrusion technology, and more preferably by cast co-extrusion technology.
- a preferred blow film method is, for example, The Encyclopedia of Chemical Technology, Kirk-Othmer, 3rd Edition, John Wiley & Sands, NY, 1981. , Vol.16, pp.416-417 ⁇ and Vol.18, pp.191-192.
- Suitable cast extrusion methods are described, for example, in Modern Plastics, Mid October 1989, Encyclopedia Issue, Vo 1.66, No. 11, pages 256-257.
- Suitable coextrusion techniques and requirements are described by Tom I Butler in Film Extrusion Manual: Process, Materials, Properties, "Coextrusion", Ch., Pp. 31-80, TAPPI Press, (Atlanta, Ga. 1992). It is described in.
- the melt index of each polymer layer of the multilayer film of the present invention is in the range of 0.4 to 20 g / 10 minutes, preferably 0.5 to 1210. Minutes, more preferably in the range of 0.8 to 6/10 minutes.
- the total film thickness of the multilayer film of the present invention is in the range of 0.4 to 20 mils (10 micron to 508 micron), preferably 0.6 to 1 micron. More preferred is in the range of 0 mils (15 micron to 254 micron) Is in the range of 0.8 to 5 mi (20 to 127 micron).
- the layer ratio of the AZB multilayer film of the present invention is larger than the A: ZB layer of 2:98, preferably in the range of 5:95 to 35:65, more preferably 1: 1. 0: 90 to 25: 75.
- the layer ratio of the multilayer film of two or more layers is such that the back layer and the surface layer of the film are kept at the same thickness, and the ratio of the core or structural layer is in the range of 60 to 98% by weight.
- the layer ratio is preferably in the range of 65-95% by weight, more preferably in the range of 70-90% by weight.
- Multi-layer cut-off film
- Multilayer barrier films are oxygen and moisture impervious multilayer barrier films, as well as ostomy bags, laminates for transdermal delivery of drugs, and heat exchangers. Includes products made from the multilayer barrier film including a sealable bag.
- oxygen having a heat seal strength of at least 1.01b, preferably greater than 1.51b, per film width of 1 inch and moisture impermeable multilayer blocking off Lee Lum is provided, the term “oxygen-impermeable” means that the full i Lum has a 9 0 ccm 2 Roh H ⁇ atm oxygen permeability of below are doing. “Water-impermeable” means that the film has a water vapor permeability of 5 gm / m 2 / H or less.
- the film includes a barrier layer having at least one heat-sealable skin layer thereon.
- the barrier layer may include, for example, any suitable barrier layer material that provides the desired oxygen and moisture impermeability that is compatible with the heat-sealable skin layer (single or multiple). No.
- the preferred barrier material is a copolymer of vinylidene chloride and vinyl chloride or methyl methacrylate. If the barrier layer comprises a copolymer of vinylidene chloride and vinyl chloride or methyl methacrylate, the barrier layer may optionally comprise 0-6% by weight of a copolymer of ethylene and buracetate, and Preferably, it can also contain 4-6% as a processing aid.
- the barrier layer is co-extruded with at least one heat-sealable skin layer.
- the heat-sealable skin layer is preferably 150,000 ps in both the machine direction (MD) and the transverse direction (TD). It has a 2% secant modulus less than j_.
- the heat-sealable skin layer is composed of ethylene ' ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ('''), ( ⁇ ',').
- the skin layer (single or multi-layer) contains 0 to 10% by weight of a copolymer of ethylene and vinyl acetate, more preferably a processing aid.
- the composition may contain 0.5 to 5% of a copolymer.
- the skin layer may optionally contain a slip agent and an anti-adhesive agent. It is desirable to co-extrude a cohesive tie layer of ethylene / vinyl acetate copolymer between the skin layer and the barrier layer to improve the adhesion of those layers. Maybe.
- a barrier layer is co-extruded between two heat-sealable skin layers.
- the skin layer 7 0 capacity full I Lum 0/0 (thickness) der is, blocking layer is 3 0 capacity full I Lum 0/0 (thickness).
- a reusable slimming bag or Can make a porch.
- the multilayer barrier film of the present invention exhibits less than 85 dB of noise when bent at an angle of 65 ° at 0.45 Hz, and preferably has a noise of less than 0.6 dB at 0.45 Hz. Bending at a 5 ° angle shows less than 83 dB of noise, and most preferably bending at a 65 ° angle at 0.45 Hz produces less than 81 dB of noise. Show.
- an additional layer can be added to the barrier layer to create a system for transdermal drug delivery.
- the system comprises a backing layer of a blocking film that acts as a barrier to the drug system.
- An adhesive containing the active agent is preferably applied to one surface of the film. Adjacent to the adhesive is a controlled release membrane adapted to contact the patient's skin and to release the drug in a controlled manner.
- the backing layer creates a reservoir containing the active agent, having a modified release membrane obscuring the reservoir opening to regulate diffusion of the agent into the patient's skin.
- Peripheral or all adhesives can be used to adhere the transdermal delivery system to the patient's skin.
- a release liner is placed over the adhesive and membrane to protect the structure before use.
- the present invention provides an oxygen and moisture impermeable multilayer barrier film that can be manufactured using a coextrusion method or a lamination method. Further, the features of the present invention include: Flexibility and low noise. Further, a heat-sealable surface is provided for use in making knots and patches.
- the multilayer barrier film of the present invention is provided, for example, in a feed blower. It can be manufactured using standard extrusion techniques, such as feedblock coextrusion, multi-manifold die coextrusion, or a combination of the two.
- the independent layers can be made separately and a suitable adhesive bonding layer '
- the polymers in the film are used to protect their low noise, except that they occur as a natural result of their manufacture. Not intentionally stretched or stretched For example, films made by the blown process inherently have some orientation in both the machine direction (MD) and the transverse direction (TD). The film remains unstretched in the transverse direction In general, the lower the orientation introduced into the film, the lower the noise will be. Shows a noise of less than 85 dB when bent at an angle of 65 at 0.45 Hz, and preferably less than 83 dB when bent at an angle of 65 ° at 0.45 Hz. Shows noise and most preferably, less than 81 dB when bent at an angle of 65 ° at 0.45 Hz.
- the heat-sealable skin layer is preferably 15, 000 in both the machine direction (MD) and the transverse direction (TD).
- MD machine direction
- TD transverse direction
- the 2% secant modulus is a measure of the stiffness or flexibility of a film. We have found that the lower the value of the 2% secant modulus for the heat-sealable skin layer, the softer the resulting film becomes.
- the 2% secant modulus is preferably less than 30,000 psi.
- Oxygen and moisture impermeable multilayer blocking off Lee Lum is copoly mer or chloride and vinyl chloride Li den vinyl chloride (1 5-1-2 0 weight 0/0) (8 0-8 5 weight 0/0) including blocking layer capable and this made of copolymers one Biniri den (9 3-9 4 wt 0/0) and Mechirume data click Li rate (6-7 wt%).
- Suitable barrier materials include, for example, Saran® 469 and Saran MA, commercially available from Dow Chemical Company.
- a suitable set of ethylene / vinyl acetate copolymer compositions is a copolymer commercially available from E. I du Pont de Nemours &; Co., Inc. under the trade name Elvax®. is there.
- the barrier layer is ethylene '.
- the blocking film is obtained by folding the film, and then forming an ethylene-free copolymer (A) or an ethylene-based copolymer composition (A '), (A ,, :)
- the ( ⁇ ′ ′ ′) skin layers can be used to make reusable slimming bags or vouches by heat sealing each other. Is rather to good or, the back grayed is, 9 0 cc Z m 2 ZH - having atm (1 8 cc / 1 0 0 in 2 / H ⁇ atm.) Of less than the oxygen permeability.
- the blocking film has a total thickness of 35 to 100 micrometer, and the blocking layer constitutes 10 to 30% of the total thickness of the film.
- the skin layer (and, if necessary, the adhesive layer) typically comprises 70-90% of the total film thickness.
- the multilayer barrier film of the present invention can also be made by a lamination technique using a suitable adhesive.
- a barrier layer and a skin layer may be made separately and then laminated together using an adhesive polymer, a liquid adhesive, or a hot melt adhesive.
- Suitable adhesive polymers for bonding the barrier layer to the skin layer include, but are not limited to, a non-limiting force, vinyl acetate, ethylacrylate, ethylmethacrylate, and methylacrylate Ethylenically unsaturated copolymers of phosphoric acid, acrylic acid and carbon monoxide.
- Other acids include ionomers of ethylene and methylacrylic acid or acrylic acid, and graft anhydride copolymers. Is a non-limiting force a suitable liquid or hot melt adhesive? , Urethane, copolyester, and amide acrylate Those based on copolymers are mentioned.
- the five layers of oxygen and moisture impermeable barrier film include a barrier layer of a suitable barrier material as discussed above.
- the barrier layer is co-extruded with the two outer heat-sealable skin layers while sandwiching the adhesive layer between the two outer heat-sealable skin layers.
- the heat-sealable skin layer in this five-layer embodiment was ethylene with ethylene as described in published PCT application N0. PCT / US92 / 08812. It can include a substantially linear copolymer with a single-ended refin, or a uniformly branched linear polyolefin resin such as, for example, an extruded resin and a toughened resin.
- Suitable adhesives include copolymers with ethylene vinyl acetate which enhance the mutual adhesion of the barrier and skin layers.
- the barrier layer of the film and The skin layer acts as a backing film, a barrier to the drug system.
- the blocking film further includes an adhesive layer containing the active agent incorporated in a matrix adhered to one side of the film.
- the adhesive chosen should be compatible with the active agent and permeable to the active agent.
- active agents can be administered to a patient in this manner, including, for example, estrogens, nitroglycerin, nicotine, and scopolamine. Theoretically, almost any drug can be administered in this manner.
- the applied controlled release film is on the adhesive layer.
- An additional layer of adhesive which can be applied around the membrane or on the entire surface of the membrane, can also be present to secure the transdermal delivery system to the patient's skin.
- the adhesive used in the practice of this embodiment of the present invention should be a medical adhesive, for example, a silicone adhesive, an acrylic acid adhesive, or a vinyl acetate adhesive.
- the system is sealed in a package or secured to a second blocking film, which is removed before use.
- Fig. 4 illustrates another form of a transdermal drug delivery system according to the present invention.
- the barrier layer and the skin layer form a barrier film that is formed into a reservoir for containing the active agent therein.
- the opening to the reservoir is concealed by a nodal release membrane.
- Adhesive which can be applied around the membrane or over the entire area of the membrane, serves to secure the system to the patient's skin layer.
- the adhesive chosen should be compatible with the active agent and permeable for the agent.
- a release liner or the like hides and protects the adhesive and film prior to use.
- a typical reusable slimming bag containing an opening made from a multilayer insulation film is made by folding the edges of the multilayer film and heat sealing its edges. Can be made. Preferably, the film is folded and sealed such that one heat-sealable skin layer provides the interior surface of the bag or vouch.
- the barrier film of the present invention provides the desired flexibility and tranquility, as well as waterproofness, odor barrier and oxygen barrier for aesthetic applications. Provided. As will be appreciated by those skilled in the art, the barrier film of the present invention may find use in other packaging applications that require moisture and oxygen barrier properties.
- the sealant for a laminated film is obtained by mixing the ethylene ( ⁇ -olefin) copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ';), ( ⁇ ',), It can be formed by the air-cooled inflation method using ( ⁇ ',').
- the laminate for a laminated film according to the present invention has a dirt impact strength of 100 kg ng / cm or more, preferably 150 kg ng / cm or more.
- This film has a perfect sealing temperature of 130 "C or less, and preferably 110 to 130.
- the laminated film sealant according to the present invention generally has a blocking strength of 1.5 kg / cm or less and a tensile Young's modulus of usually 350 kg. / cm 2 or more.
- the thickness of the laminated film sealant according to the present invention is in the range of 10 to 150 m, and preferably in the range of 10 to 60 m.
- the laminated film can be obtained by laminating the above-described laminate film laminate according to the present invention on a base material.
- a thin film made of any material capable of forming a film-like form can be used as the base material.
- examples of such a thin film include a polymer film or sheet, cloth, paper, metal foil, and cellophane.
- Such a laminated film sealant has excellent low-temperature heat sealability, hot tack, impact resistance, blocking resistance, and openability.
- Heavy packaging off I Lum is catcher in g rate, as measured in accordance with JISK 6 7 8 1 is 4 0 0 0 kg cm 2 or more, loaders bets Lee measured in compliance to the ASTMD 1 7 0 9 A method
- the impact strength is 55 kg Z cm or more, and the film thickness is usually 30 to 200 m.
- the film for heavy packaging is the aforementioned ethylene.
- -Olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ',), ( ⁇ ',') is obtained by the inflation method, ⁇ Can be manufactured by the one-die method.
- a multilayer film can be formed by laminating with a film of polyester or polyamide.
- Such a film for heavy packaging has excellent mechanical strength, transparency, and smoothness of the film surface, and is used for packaging food, office supplies, furniture, toys, electric equipment, mechanical parts, and the like. Suitable for It can also be used as a heavy packaging bag in cold regions.
- the cereal bag of the present invention comprises the ethylene-olefin copolymer ( ⁇ ) or the ethylene-based copolymer composition ( ⁇ ′), (′ ′;), ( ⁇ ′ ′). '), And the three films are closed in three directions. This can be done in any way as long as an opening is formed at one end and a bottom is formed at the other end. For example, a single film may be folded in half and its rain side closed, or two synthetic resin films may be overlapped and closed in three directions. Or a tubular (tube-shaped) piece formed by an inflation method or the like. ⁇
- the film may be closed on one side and opened on the other.
- the film is closed in one direction, for example, it is preferable to weld the films together, but when the films are closed, they are closed in a state where the contents can be tightly closed. Any method can be used as long as it is possible.
- the extending end serves as a base for attaching a tying string described below, and also serves as a roll when closing the opening of the grain bag of the present invention.
- This extended end may be provided with a separate film at one end of the open end of the bag-like film, so that the extended end is formed when the bag is formed. It may be formed by laminating films.
- the strap is used to close the opening of the grain bag. Any kind of material can be used as the material of the tying string, and if the same material as the film is used, the convenience in recycling the grain bag of the present invention is improved. Is preferred.
- the string seal portion is provided for mounting the tying string to the extension end.
- the string seal portion is formed by bending a part of the extended end toward the open end of the other film, and folds the inside so as to enclose the strap. Then, for example, the folded extension ends may be sealed together to simply insert the tying string. Alternatively, tie the extension string with the extension ends and seal the string.
- the tying string may not be moved. More specifically, for example, an adhesive may be applied to the inside of the string seal to bond the strap and the string seal so that the strap is not moved.
- the gap is provided between the string seal portion and the open end of the other film. Providing this gap is preferable in that the opening is easily opened when the grain bag is used, and that the grain bag is rolled up when the grain bag is closed.
- the width of this gap is suitably 5 to 100 mm, and more preferably 10 to 30 mm.
- the grain bag of the present invention is composed of the essential components described above, but is also established when the components described below are added.
- the grain bag of the present invention may be provided with a flap portion extending from the string seal portion to the opening end side and having a predetermined width so as to cover the opening portion. .
- the flaps hold down the contents near the opening, it is preferable in that the stored grains are hardly spilled even when the grain bags are arranged horizontally.
- the width of the flap portion is at least equal to or greater than the width of the gap, and is 30 to: I 50 mm, and more preferably 50 to: L 00 mm.
- the bottom portion may be provided with a V-shaped fold portion formed by folding one end of the synthetic resin film inward. This is preferable because the bottom of the bag becomes flat when the cereal is put into the cereal bag, and the bag stands stably. At this time, if each corner on the bottom side of the grain bag is provided with a diagonal seal that draws the hypotenuse of an isosceles triangle whose two sides are almost the same as the width and length of each fold, Preference is given to the fact that the width of the bottom is constant irrespective of the grain capacity.
- the film is provided with a plurality of ventilation holes along both sides of the grain, since the state of the grain stored therein can be appropriately maintained.
- a plurality of the ventilation holes may be formed along at least one of the opening end and the bottom end of the film. Further, each ventilation hole may be provided in a rectangular shape integrally with the film.
- the ventilation hole may be provided in only one of the two films, or may be provided in both films.
- grain bags are required to be excellent in impact resistance and tear resistance because they store polymer and move frequently.
- the grain bag according to the present invention is obtained by molding the copolymer (A) or the composition (A '), (A'''), ( ⁇ ''') by, for example, an inflation method. Since the film is formed from the film, and appropriate strength is obtained for the cereal bag, the thickness of the cereal bag can be reduced as compared with conventional polyethylene.
- a film formed from the copolymer ( ⁇ ) or the composition ( ⁇ '), ( ⁇ ',), ( ⁇ "') by the air-cooled inflation method is ( i) Ri tensile Young's modulus is 4, 0 0 0 kg Z cm 2 or more der, if it is (ii) Zehnder preparative Lee N'no, 'click DOO strength force? 5 5 kg Z cin above with a grain bag Suitable for use.
- the gross of the film is preferably 50% or more.
- the film preferably has a thickness of 30 to 200111.
- this film has excellent low-temperature characteristics such as low-temperature dropping strength characteristics that can be sufficiently used for cereal bags even in a cold region below the freezing point, so that the film thickness can be reduced. High-speed film forming is possible ⁇
- the cereal bag of the present invention first, an opening provided at the other end of the cereal bag is opened, and an appropriate amount of cereal is charged from this opening. Next, the extending end is wound several times toward the opening end of the other film. Finally, the opening is closed by tying both sides of the strap together. Therefore, the method of using a grain bag is the same as the method of using a conventional paper bag, and the working practices of producers or traders who work with the conventional grain bag. No changes are made to
- the bag for cereals of the present invention uses bags made of synthetic resin, it can be manufactured at a lower cost than conventional paper bags for cereals.
- the above components can be combined as arbitrarily as possible.
- the method for producing a grain bag of the present invention is configured as follows. That is, of the two films, an extension portion is formed in which one film has an extension end that extends in the opening direction from the opening end of the other film.
- a string supplying step of supplying a tying string along a width direction of the bag body to a portion at a predetermined interval from an opening end of the other film at the extending end.
- the extension end is
- the three synthetic resin films that are superposed are closed in three directions, and the grain bag having the bottom formed at one end and the opening formed at the other end is independent. May be formed by sealing three sides of the two formed films, or may be formed by folding a single film into two and sealing in two directions. If a film that has been formed into a cylindrical shape in advance, such as a film, is used, the manufacturing process will be easier because the two directions are closed from the beginning.
- a bottom folding step may be provided in which the bottom is folded inward to form a fold having a V-shaped cross section.
- a perforation step of providing a plurality of ventilation holes along both sides of the film at the other end may be provided.
- a second perforation step of forming a plurality of ventilation holes along at least one of the opening end and the bottom end of the other film may be provided.
- the flowable material packaging voucher is a voucher used in consumer packaging useful for packaging a flowable material (for example, a liquid such as milk), and the ethylene-like one-year-old refin copolymer. It is formed from (A) or a specific film structure containing the ethylene copolymer composition ( ⁇ '), ( ⁇ ,'), ( ⁇ ',').
- the ethylene / ⁇ -olefin copolymer ( ⁇ ) or the ethylene For packaging a flowable material using a single-layer film structure of a polymer seal layer, which is a polymer-based copolymer composition ( ⁇ '), ( ⁇ ''), or ( ⁇ ''').
- a polymer seal layer which is a polymer-based copolymer composition ( ⁇ '), ( ⁇ ''), or ( ⁇ ''').
- the voucher of the invention is manufactured.
- this film or film structure has a sealant layer.
- olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ( ⁇ ,'), ( ⁇ ''') alone.
- ethylene monoolefin copolymer ( ⁇ ) or ethylene copolymer composition (A ') , (A ") ( ⁇ ''') can be blended.
- ethylene-like copolymers ( ⁇ ) or ethylene copolymers composition (Alpha ') Ru, ( ⁇ ''), ( ⁇ ', ') to be from 1 0 wt 0/0 of full I Lum structure 1 0 0 wt 0/0' o
- the polymers from which the vouches of the present invention are made may include additives known to those skilled in the art, such as antioxidants, phosphites, cling additives, and Sandoz. It is also possible to add the supplied Standostab PEPQ (trademark), anti-block additives, slip additives, UV stabilizers, pigments, and processing aids.
- additives known to those skilled in the art, such as antioxidants, phosphites, cling additives, and Sandoz. It is also possible to add the supplied Standostab PEPQ (trademark), anti-block additives, slip additives, UV stabilizers, pigments, and processing aids.
- the film and the film structure disclosed in the present specification may be an ethylene- «-brown olefin copolymer (A) or an ethylene copolymer composition (A ') ( A "), ( ⁇ '"') may be a single-layer or multi-layer film structure, provided that it is used as at least one layer, preferably a seal layer.
- the thickness of this seal layer should be at least about 0.1 micron (2.5 micron) and more, preferably from 0.2 micron (5 micron) to 10 micron. (25 micron), more preferably 0.4 micron (10 micron) ⁇
- the force may be 5 mils (127 microns).
- the surprising feature of the bouch film structure of the present invention is that the film has a wide heat-shielding range.
- the heating range of this film structure can be generally from 50 to 160 t :, preferably from 75 to 130.
- the sealing layer of the present invention has a wider heat seal than the prior art polyethylene film made from a class of ethylene polymers that are non-uniformly branched even at approximately the same density. Was found to have a range.
- the copolymer (A) or composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '') used in the production of a film structure having the heat seal range specified above. ) Can generally range from 50 to 130 ° C, preferably from 55 to 115 ° C.
- the film structure of the present invention exhibits heat seal strength.
- the film structures of the present invention will seal at about 110 when using the DTC Hot Tack Strength Method as defined herein below. Achieve a hot tack strength of at least about 1 NZ inch (39.4 N / m) within about 0.3 seconds at bar temperature, or a DTC heat seal as defined herein below.
- a heat of at least 11 bf / inch (175 NZm) within 0.4 seconds at a shield temperature of about 110 Achieve seal strength.
- the film structure of the present invention also has a force of at least about 1 NZ inches (39.4 NZm) and less than about 110.
- seals made using the seal layer of the present invention exhibit higher strength at lower sealing temperatures than seals using higher density polyethylene of the prior art.
- Providing high heat seal strength at low temperatures to enable normal packaging equipment, such as vertical forming, filling and sealing machines, to operate at high speeds to produce low-leakage vouchers is important.
- the voucher of the present invention is produced using a linear low-density polyethylene, a linear ultra-low-density polyethylene, a high-pressure low-density polyethylene, or a combination thereof.
- a voucher that can be processed at high speed by a molding and filling machine and (2) a pouch package with less leakage can be obtained.
- a bouch is manufactured from a film structure in tubular form and has a laterally heat-sealed end. This film structure
- (II) Heterogeneously branched linear ethylene ZC3—C18a—from the group consisting of olefin copolymers, high-pressure low-density polyethylene, and ethylene monoacetate vinyl copolymer It has at least one film layer containing from 0 to 90% by weight of at least one polymer selected.
- Les off fin copolymers are generally linear low density polyethylene les emissions (for example, polyethylene produced using a Ziegler first catalyst Etc.).
- This linear low-density polyethylene is often further divided into subsets, and these subsets are labeled as very low-density polyethylene (VLDPE) or ultra-low-density polyethylene (ULDPE).
- VLDPE very low-density polyethylene
- ULDPE ultra-low-density polyethylene
- the density of this linear low density polyethylene of (II) is generally in the range of 0.87 g cm 3 to 0.94 g Z cm 3 , preferably 0.87 g cm 3 to 0.915 g / cm 3 .
- the (II) heterogeneously branched linear low-density ethylene ZC3-C18 monoolefin copolymer preferably has a melt index of 0.1 g to 10 gZlO. Show.
- the high-pressure, low-density polyethylene of (II) preferably exhibits a density of 0.916 g to 0.93 gZ cm 3 and a melt index of 0.1 to 10 gZ for 10 minutes.
- the ethylene: vinyl acetate copolymer of (II) has a weight ratio of ethylene: vinyl acetate of 2.2: 1 to 24: 1, which is 0.2 to 110 minutes. Indicates the root index.
- Another aspect of the invention is
- (A) 0.9 1 5 cm 3 or less density and 1 0.0 GZlO fraction shows the following main Le preparative Lee Nde' click scan, least for a one copolymer also (A) or composition (Alpha ';), ( ⁇ ′ ′), ( ⁇ ′ ′′) is from 10 to 100% by weight, and (b) heterogeneously branched linear ethylene / C3—C18 ⁇ -ore At least one selected from the group consisting of fincopolymers, high pressure low density polyethylene and ethylene vinyl acetate acetate (EVA) copolymers.
- EVA ethylene vinyl acetate acetate
- One polymer including Whyi prepared from Blend was a 9 0 wt 0/0 0.
- This heterogeneously branched linear ethylene C3-C18- (ref) copolymer of (ii) is generally a linear low-density polyethylene (such as polyethylene produced using a Ziegler catalyst).
- the linear low density polyethylene includes very low density polyethylene (VLDPE) and very low density polyethylene (ULDPE), as described above.
- the heterogeneously branched linear low-density ethylene ZC3-C18a-refincopolymer of (II) preferably has a melt index of 0.1 to 10 g for 10 minutes. Is shown.
- the high-pressure low-density polyethylene (b) preferably has a density of 0.916 to 0.93 g / cm 3 and a melt index of 0.1 to 10 gZlO.
- the ethylene: vinyl acetate copolymer of (b) has a weight ratio of ethylene: vinyl acetate of 2.2: 1 to 24: 1, which is a melt of 0.2 to 1 OgZlO. Indicates the index.
- the film structure of the present invention may also include a multilayer or composite film structure, preferably the polymer seal layer included in the structure is the inner layer of the voucher.
- the multilayer film structure for a vouch of the present invention may be used as long as the sealing layer forms part of the final film structure.
- a variety of film layer combinations may be included.
- the multilayer film structure for patches of the present invention may be a co-extruded film, a coated film, or a laminated film.
- the film structure may also be a barrier-film, such as a polyester, nylon, ethylene-vinyl alcohol copolymer (EVOH), polyvinylidene dichloride (PVDC), such as Saran (Trademark) (a trademark of The Dow Chemical Company) and a metal-coated film.
- a barrier-film such as a polyester, nylon, ethylene-vinyl alcohol copolymer (EVOH), polyvinylidene dichloride (PVDC), such as Saran (Trademark) (a trademark of The Dow Chemical Company) and a metal-coated film.
- EVOH ethylene-vinyl alcohol copolymer
- PVDC polyvinylidene dichloride
- Saran trademark of The Dow Chemical Company
- the vouch described herein refers to a sealing layer that is used at least inside the vouch.
- an ethylene-ethylene glycol copolymer (A) or an ethylene copolymer composition ( ⁇ ′), ( ⁇ ′), include a ( ⁇ '') seal layer and at least one polymer outer layer.
- the polymer outer layer is preferably a polyethylene film layer, more preferably a "linear low density polyethylene"("LLDPEJ") and / or a “linear ultra low density polyethylene” hereinafter. (“ULDPE”) and / or "very low density polyethylene"("VLDPE”), a heterogeneously branched linear polyethylene.
- LLDPE linear low density polyethylene
- DOWLEX TM 204 a trademark of The 'Dow Chemical Company, which is commercially available from this company.
- An example of a commercially available ULDPE is ATTANE TM 420 ⁇
- LLDPEs (both VLDPE and ULDPE) useful herein are ethylene and a small number of alpha-olefins having from 3 to 18 carbon atoms, preferably from 4 to 10 carbon atoms.
- Non-amorphous olefins containing carbon atoms eg, 1-butene, 4-methyl-1-pentene, 1-hexene, 1-octene and 1-decene
- It is a class of uniformly branched linear copolymers.
- this heterogeneously branched LLDPE is produced using a Ziegler catalyst (eg, using the method described in US Pat. No. 4,076,698 (Anderson et al.)).
- the density of LLDPE for the outer layer generally 0.8 7 g Zcm 3 or more, good Ri preferably Ri 0.9 3 g Roh cm 3 der from 0.9 is main Le preparative Lee Nde' click scan is generally 0.
- the amount is from 1 to 10 g for 10 minutes, preferably from 0.5 to 2 g / 10 minutes.
- the thickness of the outer layer can be any thickness as long as the sealing layer has a minimum thickness of 0.1 mil (2.5 micron).
- Another embodiment of the patch film structure of the present invention includes a single polymer layer sandwiched between two polymer-sealing layers 31.
- a polymer core layer is provided between at least one polymer outer layer and at least one polymer seal layer. Include at least one layer.
- This polymer layer may be the same LLDPE film layer as the outer layer, or preferably a different LLDPE, and more preferably has a higher density than the outer layer.
- the thickness of the core layer is 0.1 mil sealing layer minimum thickness (2.5 mi click b down) of Bauchi for full I Lum structure of any a thickness also good c present invention as long as it has a
- Yet another embodiment may be a structure that includes a seal layer and another layer of polyethylene film, hereinafter referred to as "High Pressure Low Density Polyethylene"("LDPE").
- this LDPE layer has a density of 0.916 to 0.930 cm 3 , and exhibits a melt index of 0.1 g, 10 g ZlO.
- the thickness of this DPE layer can be any thickness as long as the seal layer has a minimum thickness of 0.1 mil (2.5 micron).
- the weight ratio of the sealing layer ⁇ ethylene: vinyl acetate is from 2.2: 1 to 24: 1, and from 0.2 to 20 g /. It may be a structure that includes a single layer of EVA polymer that exhibits a 10 minute melt index.
- the thickness of the EVA layer can be any thickness as long as the seal layer has a minimum thickness of 0.1 mil (2.5 micron).
- the thickness of the film structure used in the production of the bouch of the present invention is 0.5 mil (12.7 micron) force, and is preferably 10 mil (254 micron). Is from 1 mil (25.4 micron) to 5 mil (127 micron).
- the design of the voucher film structure of the present invention is flexible. Different LLDPEs (eg, VLDPE and ULDPE) can be used in the outer and core layers to optimize specific film properties, such as film stiffness. In this way, the film can be optimized for a particular application, for example, a vertical fill and seal machine.
- the vouches of the present invention can be prepared using either the well-known technique in the art, either blown tube extrusion or cast extrusion. Manufactures polyethylene film structures used in manufacturing. This blown tube extrusion method is described in, for example, Modern Plastics Mid-October 1989, Encylopedia Issue, Vol. The method of cast extrusion is described, for example, in Modern Plastics Mid-October 1989, Encylopedia Issue, Vol.
- a bouch embodiment of the present invention is a hermetically sealed container that contains a "flowable material.”
- Fluid material means a material that can flow or be pumpable under gravity, but the term “fluent material” does not encompass gaseous materials.
- the flowable materials include non-carbonated liquids (eg, milk, water, juice, wine, etc.) and carbonated liquids (eg, soda, beer, water, etc.); emulsions (eg, ice cream, etc.).
- Dusts eg, meat pasta, peanut butter, etc.
- Preserved items eg, jam, pie filling, marmalade, etc.
- jelly Ground meat (eg, sausage meat); powders (eg, gelatin powder, detergents, etc.); granular solids (eg, nuts, sugar, cereals, etc.); and similar materials.
- the vouches of the present invention are particularly useful for packaging liquids (eg, milk).
- the flowable material may also include an oily liquid (eg, cooking oil or motor-oil).
- the film structure for a voucher of the present invention When the film structure for a voucher of the present invention is manufactured, the film structure is formed so as to have a desired width for use in an ordinary voucher. Cut things.
- the so-called form-filling and sealing machine which is well known in the art, is used to produce the vouching aspect of the present invention.
- the bouch mode of the present invention includes a bouch which is a tubular member having a vertical wrap seal and a horizontal seal so that a "pillow-shaped" vouch is generated when the flowable material is packed in the vouch. .
- the bouch embodiment of the present invention has a fin seal around the three side surfaces of the tubular member, that is, a top seal and a vertical side seal, and a pouch made of a fluid material.
- the bottom sealed to the bottom of the tubular member is substantially concave or ball-shaped, such that the bottom is substantially semi-circular or "bowed” in cross-section when viewed in cross-section.
- This voucher is a so-called “Enviro-Pak” voucher known in the art.
- VFFS Vertical Form Fill and Seal
- Examples of commercially available VFFS machines include VFFS machines from Hayssen or Prepac.
- the VFFS machine is described in the following literature: FC Lewis “Form_i” 111-Seal ”, Fackaging Encyiopeaia, 180, VFFS packaging method uses the sheet of plastic film structure described herein. The sheet is fed to a VFFS machine and the sheet is formed into a continuous tube in its tube forming section.
- the above-mentioned tubular member is produced by fin-sealing the plastic film with an inner inner seal.
- a ring ring to seal the tube horizontally at one end, which will be the bottom of the “bouch,” and then place the packing material, such as milk, in the “bouch” .
- the upper end of the patch is sealed using a sealing bar and then burned or cut through the plastic film. Cut the completed voucher out of the tube.
- VFFS machine are generally described in US Pat. Nos. 4,503,102 and 4,521,437.
- the capacity of the bouch of the present invention can be changed.
- the bouch is typically filled with 5 to 10 liters of flowable material, preferably 10 to 8 liters, more preferably 1 liter, Up to 5 liters.
- Either two-layer or three-layer co-extruded film products such as ethylene'polyolefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ '' ')
- A ethylene'polyolefin copolymer
- ⁇ ' ethylene copolymer composition
- ⁇ '' ethylene copolymer composition
- ⁇ '' ethylene copolymer composition
- the vouches of the present invention give excellent performance results when tested in a 5 foot (1.52 m) drop test--a test as defined herein. You. Under this 5-feet (1.52 m) drop test, the percentage of breakage indicated by the voucher is preferably less than 40 percent, and more preferably less than 20 percent. It is less than 1 cent, especially less than 10 percent.
- Nono Tutsi inclusion Nono 0 Tsu Ke -. Emissions (batch inclusion packages) the eyes ij yourself E styrene Orefu fin copolymer (A) or the ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ ''') or compositions containing any of these _
- -141-It is a batch inclusion package manufactured.
- the package is made from the film and used to protect the powder, pellets and flowable material by including it, where the entire package (ie, film and contents) is protected. It can be added to the mixture during the manufacture of a product, for example, the package can be placed in an extruder / mixer at the same time as the product contained therein.
- ( ⁇ ′ ′ ′) is preferably used as only one polymer component ( however, the ethylene-non-olefin copolymer ( ⁇ ) or the styrene-based copolymer composition ( ( ⁇ ⁇ ⁇ ⁇ '), ( ⁇ *') ( ⁇ ''') and other polymers are blended and extruded or multi-layer extruded and / or multi-layer laminated to improve the processability and film properties of this film.
- the film hardness, film characteristics, film strength, film melting characteristics or other desired film characteristics may be modified.
- Appropriate blend of the combined (A) or ethylenic copolymer composition ( ⁇ ';), ('''),(''''') and other polymer components Batch-containing films made with the material will still maintain improved performance
- Some useful polymer blend components include ethylene / vinyl acetate copolymer ( ⁇ VA), ethylene, etc.
- the inner layer is essentially composed of at least one of said ethylene / ⁇ -olefin copolymers ( ⁇ ) or ethylene-based copolymer compositions ( ⁇ ,), ( ⁇ , '), ( ⁇ ', ').
- the batch is included in the ethylene-na-olefin copolymer ( ⁇ ) or the ethylene-based copolymer composition ( ⁇ ':), ( ⁇ ''),( ⁇ ',').
- Other additives such as plasticizers, antioxidants, phosphites, cling additives, heat stabilizers, light stabilizers (such as Cyanamid), to the extent that they do not interfere with the function of the package.
- UV 531 benzophenone manufactured by Chiba Geigy Corp. pigments (e.g., titanium dioxide, calcium carbonate, carbon) Black, etc., processing aids (eg, polyethylene glycol, fluoropolymers, fluoroelastomers, waxes, etc.), and flame retardants (eg, Albright and Wilson Americas) It is a flame retardant based on phosphorus Amgard® CPC 102, etc.), lubricants (eg, waxes, stearate, mineral oil, etc.), slip agents (eg, elcamide, oleamide, etc.), anti-block additives (Eg, talc, silicon dioxide, etc.), cross-linking agents (eg, baroxides (eg, Booster TM manufactured by DuPont), anti-fogging agents (eg, Atmer TM 100 manufactured by ICI) Sorbitan ester), impact modifiers (for example, Paxon TM Pax Plus,
- antistatic agents such as Armostat 410, an ethoxylated tertiary amine manufactured by AkzoChemical, Inc.
- fillers such as talc, calcium carbonate, clay, and fume silicate. Mosquitoes, etc.
- Films and film structures having the novel properties described herein can be manufactured using conventional hot blown film or cast film manufacturing techniques. It is also possible to use a biaxial orientation method, for example, a center frame or double bubble method, in cooperation with this normal manufacturing technique.
- the usual hot brown filtration method is described in, for example, "The Encyclopedia of Chemical Technology", Kirk 10thmer, 3rd edition, John Wiey & Sons, New York, 1981, Vol. 16, 416-417. Page 18 and Volumes 18 and 191-192.
- Biaxially oriented film manufacturing methods such as the "double bubble” method as described in U.S. Pat. No. 3,456,044 (Pahike), and U.S. Pat. No. 4,865,920 (Golike et al.); U.S. Pat. No.
- This film is a single-layer or multi-layer film? , This In at least one layer, preferably the inner layer, of the above film structure, the above-mentioned ethylene-a-olefin copolymer (A) or ethylene-based copolymer composition ( ⁇ ) Use at least one of '), ( ⁇ ''), and ( ⁇ ''').
- This inner layer is the layer adjacent to the material to be included in the package. As described by WJ Schrenk and CR Finch in "Coextrusion For Barrier Packaging" in Society of Plastics Engineers RETEC Proceedings, June 15-17 (1981), pp. 211-229, The inner layer may be co-extruded with another layer (s) or laminated in a secondary operation to another layer (s).
- tubular 'films ie, It is also possible to manufacture single-layer films using blown film technology) or flat dies (immediately cast film), and optionally,
- the film may be subjected to an additional post-extrusion step to adhere it to another layer of packaging material or to extrude and laminate to form a multilayer structure. Even if this film is a coextrudate of two or more layers (also described by Osborn and Jenkins), it may be subject to other physical requirements for the final packaging film.
- the rum may be further laminated to additional layers of packaging material. Also, D.
- Extrusion coating is yet another technique for producing materials for multilayer packaging.
- Extrusion coating like cast film, is a flat die technology.
- the film layer can be extruded onto a substrate in either a single layer or co-extruded extrudate form.
- the ethylene / ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), (() ⁇ ′ ′) and ( ⁇ ′ ′ ′) constitute at least one layer, preferably an inner layer, of the entire multilayer film structure.
- the other layers in this multi-layer structure are not limited to these forces? And a rear layer and / or a tie layer and / or a structural layer.
- Such layers can use ⁇ .- like materials, some of which can be used as two or more layers within the same film structure.
- Such materials include, but are not limited to, ethylene vinyl alcohol ( ⁇ V0 ⁇ ) copolymers, polyvinylidene chloride ( ⁇ VDC), and polyethylene terephthalate.
- PET Polyethylene
- HDPE High Density Polyethylene
- EAA Ethylene / Vinyl Acetate
- EAA Ethylene Acrylic Acid
- EAA Ethylene methacrylic acid
- EEMAA Ethylene methacrylic acid copolymers
- the thickness of a single-layer or multilayer film structure is typically between 0.2 (5 micron) to 15 (381 micron) (full thickness), Preferably from 1 mil (25.4 micron) to 5 mil (127 micron) ⁇
- the inner layer containing this substantially linear ethylene / ⁇ -olefin polymer is typically 0.2 mil (5 micron).
- the inner layer containing this substantially linear ethylene / ⁇ -olefin polymer is typically 0.2 mil (5 micron).
- the inner layer containing this substantially linear ethylene / ⁇ -olefin polymer is typically 0.2 mil (5 micron).
- the ethylene ⁇ -olefin copolymer (A) or the ethylene copolymer composition ( ⁇ '),,'), (A, ',) is made of carbon and hydrogen atoms. Accordingly, batch-containing films and films made from ethylene Z acrylic acid or ethylene nome acrylic acid copolymers (as described in European Patent Application Publication No. 0 270 902). In contrast to using a bag, or from ethylene / vinyl acetate copolymers (as described in US Pat. No. 5,120,787 and US Pat. Nos. 4,248,348).
- the above ethylene / ⁇ -olefin copolymer or ethylene copolymer composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ '' ') can be compatible with various elastomer additives that are particularly useful in the rubber industry.
- the material (s) in the batch containing bag must be free flowing material (ie, the material (s) will flow easily under gravity under its own weight) ) Or may be a material that does not exhibit free flow (ie, this material (s) does not flow under its own weight under gravity).
- the material (s) vary, but typically include materials that do not exhibit free flow, such as unvulcanized rubber, uncrosslinked elastomers and tars.
- Typical materials that exhibit free flow include clay, silicates, calcium carbonate, cadmium rubidium getyldithiate, tetramethyl thiuram disulfide, benzothiazyl disulfide, substitution Thioesters and amine-type antioxidants, aniline anti-ozone derivatives, diamines, and fish _
- thiourea hardener selected from sulfur-donating compounds and peroxides
- ultraviolet light agent selected from substituted benzotriazoles and substituted benzophenones
- iron oxide selected from titanium and organic dyes, carbon blacks, reinforcing facials selected from zinc oxide and hydrated silicon compounds
- processing aids such as silicon dioxide, pumice, stearate and Includes rubber processing oils, crosslinked elastomers, unvulcanized rubber compound materials, ground tires, herbicides, bactericidal and biocidal agents, and chlorinated polyethylene (CPE).
- Free-flowing materials that are effectively included in the packages of the present invention include solids in addition to liquids.
- rubber processing oils are typically used in small quantities (eg, from 0.5 to 10% by weight) and used for at least one other component. Mix with the ingredients for the hand. All of the materials that can be packaged using the novel packaging of the present invention are not included in, nor are they limited to, the materials listed above.
- the packages of the present invention relate to compounding materials that are contained or encapsulated in kn's, and also to mixtures thereof with additives, such as rubber processing oils.
- a film is generally attached around the rubber, especially in the case of wrapped form, after the film is tightly wrapped with the film and then the film is wrapped. Is applied under normal tension to heat seal itself to complete the package. In molding this package, it is desirable, but not necessary, to heat seal the film.
- Products made from this batch inclusion package are: Cookie It varies according to the type of material contained within. Some products include asphalt animal feed and wire. For example, the packaging of crushed tires in asphalt manufacturing, the packaging of titanium dioxide in animal feed manufacturing, and the packaging of CPE in wire coating manufacturing, using the batch-containing package of the present invention. Add the specific ingredients listed in. Other products include various rubbers (eg, by packaging the rubber or rubber additive in a batch-containing film as described herein). Energy can also be produced by packaging waste materials (eg heavy tar spills or waste plastics) and placing the entire package in an incinerator. Packaging and reusing waste plastic and other materials can also be used to form other useful products, such as garbage bags or park benches.
- waste materials eg heavy tar spills or waste plastics
- packaging and reusing waste plastic and other materials can also be used to form other useful products, such as garbage bags or park benches.
- Knock-in box interior container
- the interior container for a noggin box is the above-mentioned ethylene. It is formed of a film comprising -olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ' '), ( ⁇ "').
- the thickness of the film that forms the inner container for the knock-in box may vary depending on the specific contents or manufacturing method, usually between 30 and 100 // m, preferably 50 to 700 m.
- the wall of the bag-in-box interior container according to the present invention is:
- the film be made of a film having a flexural resistance of 90,000 times or more measured in accordance with JIS-8111. Further, a film in which the neck in at the time of molding is 20 cm or less on one side is preferable.
- the interior container for the box is as described above. It may be formed from a single-layer film comprising -olefin copolymer (A) or ethylene copolymer composition (A,), (A "), ( ⁇ " ').
- the film consisting of the ( ⁇ ) or ( ⁇ *) ( ⁇ ''), ( ⁇ ''), and another resin (a nylon, ethylene, vinyl alcohol copolymer)
- It may be formed of a so-called multilayer film in which a film composed of a polymer film, a polyvinyl alcohol ( ⁇ V 0 ⁇ ), an adhesive resin and the like is laminated.
- the bag-in-box inner container is, for example, generally cubic in shape as a whole, and has a lid attached to the upper end thereof, and a position corresponding to the peripheral edge when the cube is cut diagonally. In addition, there is a thick heat seal portion.
- the interior container for a noggin box is formed so that one container half can be inserted and inserted so as to overlap the other container half.
- the inner container for bag-in-box is filled with liquid, etc., and stored or transported in a hard outer container such as a cardboard box.An empty container has one half of the container replaced by the other. It is stored or transported in a form that is folded and inserted into the container half.
- the corner of the interior container for the knock-in box is used.
- the inner container is required to have high pinhole resistance, bending resistance, and blocking resistance.
- An interior container for a knock-in box can be manufactured, for example, by the following method.
- the film is formed from the copolymer (A) or the composition ( ⁇ '), It may be a single-layer film composed of ( ⁇ , ') and ( ⁇ ', '), and may be a copolymer ( ⁇ ) or the composition (A'), (A * ') ( ⁇ '' ') And a film made of another resin (e.g., nylon, ethylene-vinyl alcohol copolymer resin ( ⁇ V0 ⁇ ), polyvinyl alcohol, adhesive resin, etc.). A so-called multilayer film may be laminated.)
- another resin e.g., nylon, ethylene-vinyl alcohol copolymer resin ( ⁇ V0 ⁇ ), polyvinyl alcohol, adhesive resin, etc.
- Such a bag box is excellent in heat stability, blocking resistance, pinhole resistance and bending resistance, and is economical. Widely used as a container for storing various liquids such as developer, bleach, and germicide.
- the medical container is a bag made of a multilayer film, a bag made of a single-layer film or a bottle made of a single layer, and the like.
- the single-layer bottle is formed from the ethylene-olefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ '), ( ⁇ ',), ( ⁇ "'). Have been.
- Medical containers are manufactured by water-cooled or air-cooled inflation, eddy, dry lamination, extrusion lamination, and blow molding methods. Can be manufactured.
- the inflation method and the co-extrusion die method are preferred from the viewpoints of hygiene, economy, etc. Blow molding is preferred.
- the thickness of the medical container usually ranges from 0.05 to 1.0 Omm, preferably from 0.1 to 0.7 mm, and more preferably from 0.15 to 0.3 mm (If the thickness of the container is 0.05 mm or more, the impact resistance is good and there is no practical problem.
- Such a medical container does not lose its transparency even after sterilization, has excellent heat resistance, and does not undergo shear deformation.
- the heat-resistant container is a bag made of a multilayer film, a bag made of a single-layer film, a multilayer bottle, a single-layer bottle, and the like. At least one layer of the multilayer film and a single-layer film are used. Film, at least one layer of the multi-layer bottle, and the single-layer bottle contain the above-mentioned ethylene.
- Copolymer ( ⁇ ) or composition ( ⁇ '), when the heat-resistant container has a multilayer structure there is no particular limitation on the layers other than ( ⁇ ") and ( ⁇ "), and polypropylene, nylon, polyester, polyvinyl alcohol, or the like may be used.
- Heat-resistant containers are manufactured by water-cooled or air-cooled inflation method, eddy method, dry lamination method, extrusion lamination method, blow molding method, etc. Can be manufactured.
- the inflation method and the co-extrusion single-die method are preferred in terms of hygiene and economy, and when the heat-resistant container is in the form of a bottle.
- the hollow molding method is preferred.
- the thickness of the heat-resistant container is 0.05 to 1.0 mm, preferably 0.1 to 0.7 mm, more preferably 0.15 to 0.3 mm. Range. If the thickness of the container is 0.05 mm or more, the impact resistance is good and there is no practical problem.
- the heat-resistant container of the present invention has a haze (ASTM D-103-61) force after heat sterilization. It is 30% or less, preferably 20 to 0%.
- the heat-deformation start temperature of the heat-resistant container is 115 or more, and the thickness of the container for lettuce food is usually in the range of 0.05 to 1.0 Omm.
- the thermal deformation start temperature is measured as follows. That is, a bag or bottle sample made of a molded film is subjected to hot water sterilization for 30 minutes at a sterilization temperature of 30 minutes using a small heat-resistant high-pressure steam sterilizer RK-416 manufactured by Alps, and then sterilized. The change is evaluated by visually observing the sample removed from the container. Starting with a sterilization temperature of 110, increase the sterilization temperature by one after each sterilization. This operation was repeated, and when the sample removed from the sterilizer was first deformed, the sterilization temperature Is the deformation start temperature.
- Such a heat-resistant container for example, a container for retort food does not lose its transparency even after sterilization, and is excellent in heat resistance and impact resistance.
- Elastic fiber is a fiber that exhibits a recovery of at least 50% with a strain of 100%, and is composed of an ethylene- "monoolefin copolymer (A) or an ethylene copolymer. Combined composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '').
- Fibers are typically classified according to the diameter they have.
- Monofilament fibers are generally defined as having an individual fiber diameter of at least about 15 denier per filament, usually at least about 30 denier.
- Fine denier fibers generally apply to fibers having a diameter of less than about 15 denier per filament.
- Microdenier fiber is generally defined as a fiber with a diameter of less than 100 micron. Fibers can also be classified by the method by which they are produced, for example, monofilaments, cont muous wound fine fiber, stable, or stable. It can be classified as short cut fiber, spun bond fiber and melt blown fiber.
- the melt index is generally from 0.0 1/10 min for monofilaments (generally fifteen denier or Z-filament or higher). 100 g 10 min, preferably 0.1 g / 10 min to 5 g 10 min, and small denier fibers (typically 15 denier in diameter) In the case of a fiber which is equal to or less than the lumofilament, it is preferably from 5 g to 10 min to 250 g for 10 min.
- Ethylene ' ⁇ -branched olefin copolymer used in the production of this elastic fiber • (A) or ethylene-based copolymer composition ( ⁇ ';), ( ⁇ "), ( ⁇ '' ') Additives such as antioxidants, phosphites, cling additives, anti-block additives and to the extent that they do not interfere with the improved fiber and fabric properties that we have found. Pigments and the like can also be included.
- a homofil fiber is a fiber that has a single region (domain) and does not have another different polymer region (such as a bicomponent fiber).
- Such homofil fibers include stable, spunbond or meltblown fibers (eg, US Pat. No. 4,340,563 (Appel et al.) And US Pat. No. 4,663,220 (Wisneski). Et al.) And gel spun fibers (e.g., U.S. Pat. No. 4,413,110), using systems such as those disclosed in U.S. Pat.
- the staple fibers can be melt spun (ie, they can be directly extruded to the final fiber diameter without additional drawing) or melt spun. Then, a fiber having a large diameter can be produced, and then heated or cold drawn using a conventional fiber drawing technique to a desired diameter.
- the novel elastic staple fibers disclosed herein can also be used as binding fibers, and in particular, This new elastic fiber has a lower melting point than the surrounding matrix fiber. In bonding fiber applications, typically, the bonding fiber is blended with other matrix fibers and then heated throughout the structure, where the bonding fiber is heated.
- Typical matrix fibers that benefit from the use of this new elastic fiber include, but are not limited to, poly (ethylene terephthalate) fiber, cotton fiber, nylon fiber These include loft fibers, polypropylene fibers, other heterogeneously branched polyethylene fibers, and linear polyethylene homopolymer fibers.
- the diameter of the matrix fiber can be changed according to the end use.
- melt spun fiber made from one-year-old refin copolymer (A) or ethylene copolymer composition ( ⁇ ), ( ⁇ ⁇ ), ( ⁇ ⁇ ')
- the recovery rate is the recovery rate of a fiber obtained by melt-spinning the fiber so that its diameter is twice or three times the diameter of the above-mentioned melt-spun fiber, and then cold-drawing this fiber to obtain the same diameter. It is almost the same as Since the elasticity here is not the result of an orientation that would be rendered ineffective by heat treatment, a product is obtained that has the ability to maintain its elasticity even after subsequent thermal exposure.
- the melt index of the copolymer composition ( ⁇ '), ( ⁇ '''), ( ⁇ ,, ') can be varied widely. This allows the strength and shrinkage of the fiber and fabric to be reduced from their elasticity.
- the ability to vary independently allows for greater flexibility in the design of dough and finished products. For example, by changing the polymer's melt index rather than the fiber's diameter, the shrinkage of the fiber can be changed (a lower melt index results in a higher shrinkage). Therefore, it is possible to better optimize the "feel" (that is, the feel) of the fabric while giving the fabric the required elasticity and strength performance.
- the ethylene / ⁇ -vinyl olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ′;), ( ⁇ ′ ′), ( ⁇ ′ ′ ′) It is also possible to produce a bicomponent fiber by using. At least a part of the above bicomponent fiber is composed of the ethylene 'polyolefin copolymer ( ⁇ ) or the ethylene copolymer' composition ( ⁇ '), ( ⁇ ''), ( ⁇ ''').
- this ethylene-like one-year-old olefin copolymer ( ⁇ ) or an ethylene-based fiber The copolymer composition ( ⁇ '), ( ⁇ '''), ( ⁇ '') can be present in either its shell or core.
- different ethylene 'one-year-old olefin copolymers ( ⁇ ) or ethylene-based copolymer compositions ('), ( ⁇ '''), and ( ⁇ ''') can be installed in the same fiber.
- both components are preferably elastic, and in this case, in particular, the melting point of the shell component is higher than the melting point of the core component.
- Other types of bicomponent fibers are also within the scope of the invention, including side-by-side fibers (eg, fibers having discrete polymer regions).
- this ethylene is used in the monoolefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ '').
- the shape of the fiber is not limited. For example, a typical fiber is a force with a circular cross section? Sometimes, the fibers have different shapes, such as a tribal shape or a flat (ie, “ribbon-like”) shape.
- the elastic fibers disclosed herein are not limited by fiber shape.
- Fiber diameter can be measured and reported in a variety of ways. Generally, the fiber diameter is measured in denier per fiber. Denier is a textile term defined as the number of grams of fiber per 900 meters of fiber length. Monofilament is generally applied to an extruded strand with a denier per filament of 15 or more, usually 30 or more. Small denier fibers generally apply to fibers having a denier of about 15 or less. Microdenier (also known as microfiber) generally applies to fibers having a diameter of less than about 100 micrometer. In the case of the novel elastic fiber disclosed in the present specification, the diameter can be changed widely without substantially affecting the elasticity of the fiber.
- the denier of this fiber can be adjusted to match the function of the finished product, and preferably from 0.5 to 30 denier Z-filament for meltblown. 1 to 30 deniers / filament for metal, snow, and oval bonds, and 1 to 20 deniers for continuous wound filaments. would.
- Fabrics made from the novel fibers include both woven and non-woven fabrics.
- Non-woven fabrics, including (spunlaced) (or hydraulically entangled) fabrics can be manufactured in a variety of ways, including continuous fibers in a single continuous operation by fuzzing and heat-bonding stable fibers. Melt-blowing the fibers or fibers by spunbonding, and then calendering or heat-bonding the resulting web. Manufacturable by producing dough.
- nonwoven fabric manufacturing techniques are well known to those skilled in the art, and the present disclosure is not limited to any particular method.
- Other structures made from the above fibers are also included within the scope of the invention, including, for example, the novel fibers and other fibers (eg, poly (ethylene phthalate) (PET) or cotton). Blends and the like.
- Monoolefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ' '), ( ⁇ '' '') Means that it can contain additional materials that do not affect it.
- Such useful non-limiting additive materials include pigments, antioxidants, stabilizers, and surfactants [eg, US Patent No. 4,486,552 (Niemann); US Patent No. 4,578,414 (Sawyer et al.). Or US Patent No. 4,835,194 (as disclosed in Bright et al.).
- Products that can be manufactured using the novel elastic fibers and fabrics disclosed in this specification include composite fabric products (for example, diapers) for which it is desired to have an elastic portion. Is included. For example, diapers ⁇
- novel elastic fibers and fabrics disclosed herein can also be used in a variety of structures, such as those described in U.S. Pat. No. 2,957,512 (Wade).
- the layer 50 of the structure described in U.S. Pat. No. 512 i.e., a component that exhibits elasticity
- a material that does not exhibit elasticity may be flattened, pleated, and creeped.
- Fabrication (creping, etc., to produce elastic structures) can be replaced with this new elastic fiber and fabric.
- the novel elastic fibers and / or fabrics can be attached to non-elastic fibers, fabrics or other structures by fusion bonding or using an adhesive.
- the non-elastic component (as described in US Patent No. '512) is crimped prior to installation.
- the elastic components with gathers or shears can be pre-stretched before mounting or by elastically shrinking the elastic components after installation. Can be manufactured.
- novel elastic fibers described herein can be spun lace (or water) It can also be used to produce new structures.
- the elastic sheet (12) disclosed in U.S. Patent No. 4,801,482 (Goggans) can now be manufactured using the novel elastic fiber fabric described herein.
- a continuous filament exhibiting elasticity as described herein can also be used in weaving applications where high resilience is desired.
- the toughness and shrinkage of the novel elastic fibers and fabrics disclosed herein are adjustable, which may be necessary, for example, in US Pat. No. 5,196,000 (Clear et al.). In the same garment as described, the design can be flexible with respect to varying contractile forces.
- U.S. Pat. No. 5,037,416 (Allen et al.) Describes the advantages of a conformable topsheet by using elastic ribbons (see U.S. Pat. See).
- This new elastic fiber may perform the function shown by member 19 of the '416 patent, or may be used in a fabric form that provides the desired elasticity.
- Composites utilizing high molecular weight linear polyethylene or copolymer polyethylene also benefit from the use of the novel elastic fibers disclosed herein.
- the new elastic fiber has a low melting point (the melting point of the polymer and the density of the polymer are essentially linearly related), and as a result, US Pat. No. 4,584,347 (Harpell et al.) Blends of polyethylene fibers with very high molecular weight (eg, Spectra (TM) fibers manufactured by Allied Chemical) and this novel elastic fiber as described in In the case of a material, the low melting point elastic fiber connects the high molecular weight fibers without melting the high molecular weight polyethylene fibers, thus providing the high strength and integrity of the high molecular weight fibers. Will be retained.
- TM Spectra
- the new elastic fiber may also be a melt blown elastic component as described by reference numeral 6 in the diagram of US Pat. No. 4,879,170 (Radwanski).
- the '170 patent generally describes co-molding materials and methods of manufacture that exhibit elastic properties.
- 'It is also possible to produce elastic panels using the novel elastic fibers and fabrics disclosed herein, such as those described in US Patent No. 4,940,464 (VanGompe It can be used as any of the members 18, 20, 14 and / or 26.
- the novel elastic fibers and fabrics described herein can also be used to provide the elastic components of composite side panels (eg, US Pat. It can be used as layer 86) of No. 464.
- Kishi-foam compacts can be formed into various shapes including rods, tubes, tapes, sheets, etc., and are used as buffers, heat insulators, base materials for compresses, etc. Can be
- the foamed molded article is the ethylene. -Olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ '''), and a foaming agent are mixed, and heated or depressurized. Gasification of foaming agent or foaming of decomposition gas Therefore, it is produced by generating bubbles in the resin molded body.
- Examples of the method for producing a foamed molded article include the following production method.
- a physical foaming agent When extruding at a temperature close to the melting point of, a physical foaming agent is pressed into a press-fitting hole provided in the middle of the extruder and continuously extruded from a die having a desired shape to obtain a foam.
- Physical foaming agents include volatile foaming agents such as chlorofluorocarbon, butane, pentane, hexane, and cyclohexane.2 Inorganic gas systems such as nitrogen, air, water, and carbon dioxide. Foaming agents.
- a cell nucleating agent such as calcium carbonate, talc, clay, magnesium oxide or the like may be added.
- the mixing ratio of the physical foaming agent is usually 5 to 60 parts by weight with respect to 100 parts by weight of the copolymer ( ⁇ ) or the composition ( ⁇ '), ( ⁇ "), ( ⁇ ' '' '). Parts, preferably 10 to 50 parts by weight If the blending ratio of the physical blowing agent is too small, the foaming property of the foam decreases, and if it is too large, the strength of the foam decreases. I do.
- Ethylene ' ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ ,), ( ⁇ ',), ( ⁇ ','), azodicarbonamide, etc.
- melt-kneading is performed at a temperature lower than the decomposition temperature of the pyrolytic foaming agent to produce a foamable resin composition.
- Forming a sheet heating the sheet to a temperature equal to or higher than the decomposition temperature of the foaming agent, and foaming the sheet to obtain a foam.
- the mixing ratio of the organic thermal decomposition type foaming agent is usually 1 to 10 parts by weight based on 100 parts by weight of the copolymer (A) or the composition ( ⁇ ′;), (A ′′) (A ′ ′ ′). 50 parts by weight, preferably 4 to 25 parts by weight If the proportion of the organic thermal decomposition type foaming agent is too small, the foaming property of the foam is reduced. The strength of the foam decreases.
- the ethylene '. -Refined copolymer ( ⁇ ) or ethylene-based copolymer composition ( ⁇ '), ( ⁇ "), (' '' ') with a A method of obtaining a foam by molding into a pressure-sensitive container or the like, then placing the molded body in a pressure vessel, sufficiently dissolving the physical foaming agent in the resin, and reducing the pressure.
- the molded body may be filled with a physical foaming agent at room temperature in a pressure vessel, pressurized, depressurized, taken out, and foamed by heating in an oil bath, oven, or the like. It is possible.
- the ethylene / ⁇ -olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ ′;), (k,, ( ⁇ ′ ′′)) is previously cross-linked. If so, a crosslinked foam can be obtained.
- the crosslinking method includes a method in which a peroxide radical generator mixed in a resin is thermally decomposed and crosslinked, crosslinking by irradiation with ionizing radiation, ionization in the presence of a polyfunctional monomer.
- Crosslinking by irradiation with radiation and silane crosslinking can be exemplified.
- -165-Composition (A '), (A' '), (A' ''), organic pyrolysis type foaming agent, heat-curing polyfunctional monomer and other compounding agents as crosslinking aid It is melt-kneaded at a temperature lower than the decomposition temperature of the decomposition-type foaming agent and formed into a sheet.
- the obtained foamable resin composition sheet is irradiated with a fixed amount of ionizing radiation to crosslink the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′), ( ⁇ ′ ′)). After that, the crosslinked sheet is foamed by heating it to a temperature higher than the decomposition temperature of the foaming agent.
- ionizing radiation examples include ⁇ line, / 3 line, y-ray, electron beam and the like.
- peroxide crosslinking and silane crosslinking can be performed instead of irradiation crosslinking with ionizing radiation.
- the copolymer (A) or the composition ( ⁇ ′), ( ⁇ ′ ′), or ( ⁇ ′ ′ ′) may be used as long as it does not impair the object of the present invention.
- Additives such as anti-lip agents, anti-blocking agents, anti-fogging agents, lubricants, pigments, dyes, nucleating agents, plasticizers, anti-aging agents, hydrochloric acid absorbents, and antioxidants are required. It may be blended accordingly. Further, other polymers can be blended in a small amount without departing from the spirit of the present invention.
- Such a foam is excellent in flexibility and toughness.
- the foam structure is ethylene. It consists of a one-year-old olefin copolymer ( ⁇ ) or an ethylene copolymer composition ( ⁇ '), ( ⁇ ' ⁇ , ( ⁇ ' ').
- ethylene-based polymers or other natural or synthetic polymer blends are low density polyethylene (LDPE), medium density polyethylene (MDPE) and high density polyethylene.
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE Polyethylene (HDPE) (e.g., produced using a zeolite catalyst as described in U.S. Pat. No.
- ethylene / vinyl acetate copolymer copolymers one ethylene les emissions and ethylene emissions unsaturated mosquito Le Bon acid
- alpha - c other suitable polymer one containing homo- and copolymers of ethylenes (including high impact polystyrene) polystyrene, styrene - butadiene Includes block copolymers, polyisoprene and other rubbers.
- a blend containing a high melting point resin in a major proportion is preferred.
- the copolymer (A) or the composition ( ⁇ '), ( ⁇ '''), ( ⁇ ''''') for producing the foam structure, or the blend containing these, is an ethylene-based resin. Polymer One material.
- ethylene Le emissions based poly Ma first material is rather to favored 5 0 by weight 0/0 above, rather then preferred Ri yo comprises 7 0% or more by weight of the ethylene monomer a unit.
- the ethylene-based polymer material may consist entirely or entirely of ethylene monomer.
- Preferred blends are ethylene-polyolefin copolymers ( ⁇ ) or ethylene-based copolymer compositions (A '), (A "), (,'''), and other blends. These include common ethylene-based polymers, such as LD ⁇ , ⁇ DPE, ethylenenoacrylic acid copolymer (EAA) and LLDPE.
- antioxidants eg, hindered phenols (Irganox TM 1010), phosphites (eg, Irgafos TM 168)), pigments, etc.
- This form structure can be manufactured by a conventional extrusion foaming method.
- the structure is generally heated by heating the ethylene-based polymer material to form a plasticized or molten polymer material, and incorporating a blowing agent therein to form a foamable gel. And by extruding the gel through a die to form a foam product.
- the polymer material Prior to mixing with the blowing agent, the polymer material is heated to a temperature above its glass transition temperature or melting point.
- the blowing agent may be placed or mixed into the molten polymer material by any means of the prior art, such as an extruder, mixer, blender.
- the blowing agent inhibits substantial foaming of the molten polymer material and is mixed with the molten polymer material at a high pressure sufficient to substantially uniformly disperse the blowing agent.
- the nucleating agent may be blended into the polymer melt or dry mixed with the polymer material prior to plasticizing or melting.
- the foamable gel is usually cooled to a lower temperature to optimize the physical properties of the foam structure.
- the gel is then extruded or transported through a die of desired shape into a vacuum or lower pressure zone to form a foam structure.
- the lower pressure zone is at a lower pressure than the pressure maintained before the foamable gel was extruded through the die.
- Lower pressure is greater than or equal to atmospheric pressure (vacuum) Good power? , Preferably at atmospheric pressure levels.
- This structure may be processed into a coherent strand by extrusion of an ethylene polymer material through a multi-orifice die. Contact between adjacent streams of the melt extrudate occurs during the foaming process, and the contacting surfaces have sufficient adhesion to form an integral foam structure.
- the orifices are arranged so that they adhere to each other.
- the stream of melt extrudate exiting the die assumes a strand or profile, which desirably foams, agglomerates, and adheres to one another to form a monolithic structure.
- the individual strands or profiles that are agglomerated do not delaminate the strands at the stresses encountered when preparing, applying, and using the form. As such, it should remain attached in one piece.
- a method and apparatus for producing a foam structure in an aggregated strand can be found in US Pat. Nos. 3,573,152 and 4,824,720.
- the foam structure may also be formed by a cumulative extrusion process, as found in US Pat. No. 4,323,528.
- a low-density foam structure having a large lateral cross-sectional area is formed by: 1) forming a gel of an ethylene-based polymer material and a blowing agent under pressure, wherein the viscosity of the gel is Form at a temperature sufficient to retain the blowing agent as the gel expands; 2) extrude the gel into a holding zone maintained at a temperature and pressure that will not cause the gel to foam
- the holding zone is the artifice die that surrounds the orifice opening to the lower pressure zone, which foams the gel, and the opening that closes the die orifice.
- the periodic release of the plate means that 4) a mechanical ram can be applied at substantially the same time by the ram that can be moved over the gel, and it can be applied from the holding zone through the die orifice to a lower pressure. Discharge at a rate greater than the rate at which substantial foaming occurs in the die orifice, and at a rate lower than the rate at which substantial irregularities in cross-sectional area or shape occur. Release at a rate, and 5) foaming the released gel in at least one direction unrestrained to produce a foam structure. You.
- This form structure can also be processed into non-crosslinked form beads suitable for molding the product.
- discrete resin particles such as granular resin pellets
- a liquid medium such as water, in which the resin is substantially insoluble
- impregnated with a blowing agent by introducing the blowing agent into a liquid medium at elevated temperatures and pressures in another pressure vessel; and in air or in a vacuum chamber to form foam beads. Rapidly discharged into the air.
- the styrene monomer is suspended in a pellet so that it forms a graphite copolymer with the ethylene polymer material. May be impregnated.
- the polyethylene / polystyrene copolymer beads are cooled and discharged from the container without substantial foaming.
- the beads are then foamed and molded by conventional foamed polystyrene bead molding methods.
- a method for producing a polyethylene / polystyrene copolymer bead is described in U.S. Pat. , 168, 353.
- the form beads can then be formed by any means known in the art, for example, by loading the form beads into a mold and forming the product.
- the beads are formed, for example, by heating the beads with steam to agglomerate and fuse. If desired, the beads may be impregnated with air or other blowing agent at elevated temperatures and pressures before loading into the mold. In addition, the beads can be heated before loading.
- the form beads can then be formed into blocks or shaped articles by any suitable molding method known in the art (some methods are disclosed in U.S. Patent Nos. 3,504,068 and 3,3, 953, 558.)). An excellent teaching of the above methods and molding methods can be found in the above publications of P. Park at p191, p-197-198 and p-227-229.
- Blowing agents useful in the manufacture of this foam structure include inorganic blowing agents, organic blowing agents, and degradable chemical blowing agents.
- Suitable inorganic blowing agents include carbon dioxide, nitrogen, argon, water, air, nitrogen and helium.
- Organic blowing agents include aliphatic hydrocarbons having 1 to 6 carbon atoms, fatty alcohols having 1 to 3 carbon atoms, and fully or partially halogenated having 1 to 4 carbon atoms. Contains converted aliphatic hydrocarbons. Aliphatic hydrocarbons include methane, ethane, brono, and the like. Includes butane, n-butane, isobutane, n-pentane, isopentan and neopentane.
- Fatty alcohols include methanol, ethanol, and n-prono. Contains knol and isopropanol.
- Fully or partially halogenated aliphatic hydrocarbons include fluorcarbon, chlorocarbon, and chlorofluorocarbon.
- Fluorocarbon is an example of fluorine , Perfluoromethan, futsudiraethyl, 1, 1-difluororoethane (HFC-152a), 1, 1, 1-trifluoroethane (HFC-143a), 1, 1, 1 , 2-Tetrafluorene, 2,2-Difluoroprono ,. 1, 1, 1-Trifluoroprono II. , Perfluoloprono. And dichloroprono.
- halogenated chlorocarbons and chlorofluorocarbons for use in the present invention are methyl chloride, methylene chloride, chlorinated ethyl chloride, 1,1,1-tol.
- LiChloroethane, 1,1-Dichloro- 1-Fluoroethane (HCFC-141b), Rekuro Port-1,1-Difluororotan (HCFC-142b), 1,1-Dichloro B Includes -2,2,2-trifluoroethane (HCFC-123) and 1-chloro-1,2,2,2-tetrafluoroethane (HCFC-124).
- Fully halogenated black mouth Fluoroca Bon is Tricyclo monomonofluoromethane (CFC-11), Cyclodifluoromethane (CFC-12), Trikuro mouth Trifluorene (CFC-113), 1,1,1-Trifluorene, Pentafluorene, Zicrotate Trafluene (CFC-114), Fluorofluorene Includes hexafluoropropane.
- Chemical blowing agents are azodical carbonyl amide, azo sodisobuty-nitrile, benzenesulfon hydrazide, 4,4-oxybenzenesulfonylsemicarnozide, and p-toluenesulfonylsemicarnoide. Includes amide, azidocarboxylate, N, N'-dimethyl-dinitrosoterephthalamide, and trihydrazinotriazine.
- Preferred blowing agents include isobutane, HFC-152a and mixtures thereof.
- the amount of blowing agent that is put into the polymer melt to produce the foam-forming gel is 0.2 to 5.
- it is a 0.53.0 gram mole kg polymer and most preferably a 1.0 to 2.50 gram mole kg polymer.
- additives such as stability control agents, nucleating agents, inorganic fillers, pigments, antioxidants, acid scavengers, UV absorbers, flame retardants, processing aids and extrusion aids It may be placed in a foam structure.
- Stability control agents may be added to this foam structure to improve dimensional stability.
- Preferred stability control agents include amides and esters of C10-C2 fatty acids. Such stability control agents are found in US Pat. Nos. 3,644,230 and 4,214,054. Most preferred stability control agents include stearyl stearamide, glycerol monostearate, glycerol monobeneates and sorbitol monostearate. Usually, such stability control agents are used in amounts ranging from about 0.1 to about 10 parts per 100 parts of polymer.
- This foam structure exhibits excellent dimensional stability.
- the preferred form recovered to more than 80% of its initial volume, which was measured 30 seconds after foaming. Volume is measured by a suitable method such as volume exclusion of water.
- a nucleating agent may be added to control the size of the foam in the foam.
- Preferred nucleating agents include calcium carbonate, talc, cres, titanium dioxide, silica, barium sulphate, diatomaceous earth, mixtures of citric acid and sodium bicarbonate, and the like. Contains various inorganic substances.
- the amount of nucleating agent used may range from about 0.01 to about 5 parts by weight per 100 parts by weight of the polymer resin.
- the foam structure is substantially uncrosslinked or uncrosslinked.
- the alkenyl aromatic polymer material containing this foam structure is not substantially crosslinked.
- the form structure contains less than 5% gel by Method A of ASTM D-2765-84.
- the form is from 0.05 to 5.0, more preferably from 0.2 to 2.0, and most preferably from 0.3, according to ASTM D3576. It has an average bubble size of ⁇ 1.8 millimeters.
- the foam structure may take any of the physical forms known in the art, such as extruded sheets, rods, planks and profiles.
- the foam structure may be formed by molding foamable beads into any of the above shapes or any other shape.
- the foam structure may be closed-cell or open-cell.
- this form contains 80% or more closed cells, according to ASTM D2856-A.
- Such a tougher and more elastic foam structure would be very useful in sport and leisure applications and in cushion packaging applications.
- the foamed structure is made up of ethylene ' ⁇ -styrene copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''), ( ⁇ ''') Consisting of strong, elastic and low density. Also, the structures of the present invention are more thermally stable than EVA foam structures and do not generate unpleasant odors during foam expansion, manufacture and use.
- the soft strong cross-linked foam structure is useful for sporting goods, medical devices and cushioning goods.
- suitable different ethylene-based polymers include low-density polyethylene (LD-II) (eg, high-pressure, full-radical polymerization technology) and medium-density polyethylene (MD-II).
- HDPE high-density polyethylene (e.g., produced using a Zigra catalyst as described in U.S. Pat. No.
- ethylene-polyester copolymers Ethylene / vinyl acetate copolymer, a copolymer of ethylene and an ethylenically unsaturated carboxylic acid, and homopolymers and copolymers such as ⁇ -ethylenic substances.
- suitable polymers include polystyrene (including 'high impact polystyrene'), styrene-butadiene block copolymer, polyisoprene, and other rubbers.
- a blend containing a high proportion of high melting point resin is preferred.
- ethylene-les emission poly mer material is rather favored rather further 5 0 wt% or more preferred comprises 7 0 weight 0/0 or more ethylene emissions of monomer a unit.
- the ethylene polymer material may be composed entirely of ethylenic monomer units.
- the preferred blend is the ethylene.
- the foamed structure of the present invention may take any physical form known in the art, such as a sheet, plaque, or burn stock.
- Other useful foams are expandable or expandable particles, formable expandable particles, or beads, and articles produced by expansion and fusion or welding of these beads.
- the foamed structure of the present invention is characterized in that the ethylene / ⁇ -olefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′ ) ) And a decomposable chemical blowing agent are blended and heated to form a foamed plasticized or molten polymer material, and the foamable molten polymer material is extruded from a die and cross-linked into the molten polymer material. It is produced by exposing the molten polymer material to elevated temperatures to release the blowing agent and create a foamed structure.
- the polymeric substance and the chemical blowing agent can be mixed and melt blended by means known in the art, such as an extruder, mixer, or blender.
- the chemical blowing agent is preferably dry blended with the polymer material prior to heating the polymer material to a molten form, but should be added when the polymer material is in the molten phase. Can also.
- Cross-linking can be induced by the addition of a cross-linking agent or by radiation. Exposure to elevated temperatures to induce cross-linking and to expand or foam can occur simultaneously or sequentially. When using a cross-linking agent, it is incorporated into the polymer material as well as a chemical blowing agent.
- the expandable polymer when using a crosslinker, the expandable polymer—the molten material is preferably heated or exposed to a temperature of less than 150 to prevent decomposition of the crosslinker or foaming agent and accelerate it.
- the foamable polymer material is heated or exposed to a temperature, preferably below 160, to prevent decomposition of the blowing agent.
- the foamable molten polymer material is extruded through a die of desired shape to create a foamed structure.
- the expandable structure is then cross-linked and expanded at an elevated temperature such as an oven (typically 150-250 ° C).
- the foamable structure When radiative cross-linking is used, the foamable structure is irradiated to cross-link the polymer, which is then expanded at the elevated temperature described above.
- the structures of the present invention can be sheeted or laminated by the methods described above, advantageously using either cross-linking agents or radiation.
- the foamed structure of the present invention can be made into a continuous sheet structure by an extrusion method using a long land die as described in GB2, 145, 961A.
- the polymer, the degradable blowing agent and the blowing agent are mixed in an extruder, and the mixture is heated to cross-link the polymer and foam the foam in a long land die. And forming from the foamed structure through a die.
- the contact between the foam structure and the die is lubricated with a suitable lubricant.
- the foamed structure of the present invention also provides a cross-linked foam suitable for forming articles. ⁇
- the foam beads can be formed by means known in the art. For example, foam beads are filled into a mold, the mold is compressed by compressing the mold, and the beads are heated, for example, by steam, to fuse and weld the beads to make an article.
- the beads can be preheated with air or other blowing agent before filling into the mold.
- Expanded beads also produce a mixture of the polymer, crosslinker, and degradable mixture in a suitable mixing device or extruder, form the mixture into pellets, and remove the pellets. Made by heating to cross-link and expand It can be made.
- cross-linked foam beads suitable for molding into articles.
- the ethylene polymer material is melted and mixed with a physical blowing agent in a conventional foam extruder to create a substantially continuous foamed strand.
- the foamed strand is granulated or pelleted to form a foamed bead.
- the foam beads are then cross-linked by radiation.
- the cross-linked foam beads are then coalesced and molded to produce various articles as described above for other foam bead methods. Additional teachings on this method can be found in U.S. Patent No. 3,616,365 and in the above publication of Shipper Park et al., Pp224-22 $.
- the foamed structure of the present invention can be manufactured in a burn stock form by two different methods.
- One method involves the use of cross-linking agents, the other uses radiation.
- the foamed structure of the present invention is characterized in that the ethylene / ⁇ -olefin copolymer (A) or the ethylene-based copolymer composition ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′ ′ ′) Mixing the cross-linking agent and the chemical blowing agent to form a slab, and heating the mixture in a mold so that the cross-linking agent cross-links the polymeric material and breaks down the blowing agent; Then, it is expanded by releasing the pressure in the mold, thereby making it possible to make it in a burn stock form.
- the burn stock created during pressure release can be reheated to provide further expansion.
- Cross-linked polymer sheets can be made by irradiating the polymer sheet with a high energy beam, or by heating a polymer sheet containing a chemical cross-linking agent. Cross-linked polymer sheet is desired ⁇
- Blowing agents useful for making the foamed structures of the present invention include degradable chemical blowing agents. Such chemical blowing agents decompose at high temperatures to form gases or vapors, entrapping the polymer into the foam.
- the chemical blowing agent is preferably in a solid form so that it can easily dry blend with the polymer material.
- chemical foaming agents azodiphenol amide, azodiisobutyronitrile, benzenesulfohydrazide, 4,4-oxybenzens-sulfonyl-semicarnozide, P-toluenesulfonyl-semical Cudide, Norium azodical carboxylate, N, N'-Dimethyl-N, N'-Dinitrosoterephthalamide, N, N'-Dinitrosopentamethylene Examples include tramine, 4,4-oxybis (benzenesulfonyl hydrazide), and trihydrazinoditriazine, with azodicalbonamide being preferred. Additional teachings on chemical foaming agents can be found in C.P. pp. 382-402, D. Flemper and Gay Sci, "Fr 1 sch", Nonsa N., Britshas, Ober, Wien, New York, found in Barcelona (1991).
- the chemical blowing agent emits 0.2-5.0, preferably 0.5-3.0, most preferably 1.2-2.5 moles of gas or vapor per kg of polymer Is blended with the polymer material in an amount sufficient to ⁇
- Crosslinkers useful for producing the foamed structures of the present invention are organic peroxides. 1,1-Di-t-butylvinyloxy-3,3,5-trimethylcyclohexane; useful organic peroxide crosslinker; di-dimethyl peroxyside, 2,5- Dimethyl-2,5-di (t-butylvinyloxy) hexane; 1-butylcumylno. 1-hydroxy-, 2-, 5- (di-butyloxy) diisopropyl benzene, di-t-butylperoxide, and 2,5-dimethyl-2,5-di (t-butyl benzoate) Hexoxy) hexane. Dicumyl peroxide is the preferred reagent. Additional teachings on organic peroxyside cross-linking agents can be found in the above-mentioned publication of Chip Park's pp. L98-204.
- Radiation cross-linking can be done by any of the usual types. Useful types of radiation include electron beams or beta rays, gamma rays, x-rays, or neurons. The radiation cross-links by generating a polymer group, which is believed to collectively cross-link. Additional teachings on radiation cross-coupling can be found in the above publication, PP198-204, by S.P. 'Park.
- a physical blowing agent can be used.
- Physical and blowing agents include organic and inorganic reagents. Suitable inorganic blowing agents include carbon dioxide, nitrogen, argon, water, air, and helium.
- organic blowing agents aliphatic hydrocarbons with 1 to 9 carbon atoms, aliphatic alcohols with 1 to 3 carbon atoms, and complete and partial halogenations with 1 to 4 carbon atoms Hydrocarbons.
- Aliphatic hydrocarbons such as methane, ethane, pronon, n-butane, isobutane and n-pentane , Isopentane, and neopentane.
- Aliphatic alcohols include methanol, ethanol, n-bromo, 'nor and isopropanol.
- Full and partial lipogenated aliphatic hydrocarbons include fluorocarbons, chlorocarbons and chlorofluorocarbons.
- fluorocarbons include methyl fluoride, no, ° -fluoromethane, ethylfluoride, 1,1-difluorobenzene (HFC-152a), l, l, l- Trifluorene (HFC-143a), 1,1,1,2—tetrafluorene (HFC-134a), pentafluorene, difluorene, no.
- the partially halogenated chlorocarbons and chlorofluorocarbons used in the present invention include methyl chloride, methylene chloride and ethyl chloride.
- HCFC—141b 1, 1, 1-trichloroethane, 1,1-dichloro-1-fluorene (HCFC—141b), 1-chloro mouth—1,1-difluorene (HCFC-142b), chlorodifluoromethane (HCFC-22), 1,1-dichloro-2,2,2-trifluorene (HCFC-123), And 1-black mouths-1,2,2,2-tetrafluoroethane (HCFC-124).
- Trifluoride monofluorometer CFC-11
- dichlorodifluorometer CFC-12
- trichloride Tri-fluorene CFC-113
- 1,1,1-trifluorene pentafluorene
- dichlorate lafluorene CFC-114
- mouth Hepta full Oroloprono 'n
- dichlorohexafluoroprono a fluoride monofluorometer
- the amount of blowing agent to be incorporated into the polymer melt to make a foamable polymer gel is from 0.2 to 5.0, preferably from 0.5 to 3.0, most preferably 1. 0-2.5 mol kg polymer.
- the kishi foam structure of the present invention has a cross-link density of 5 to 90%, more preferably 30 to 70%, as measured by ASTM D-2765-84, Method A. Have.
- the foamed structure of the present invention has a density of less than 500, more preferably less than 250, and most preferably less than 150 k cubic meters. With a mean pore diameter of 0.05 to 5.0, more preferably 1.0 to 2.0, most preferably 0.2 to as determined by 576 .
- the foamed structure of this kisaki may be closed cells or open cells.
- the foamed structure of the present invention is more than 90% closed cells as measured by ASTM D2856-A.
- additives can be blended in the foamed structure of the present invention.
- additives are, for example, inorganic fillers, stability control agents, nucleating agents, coloring agents, antioxidants, acid removers, UV absorbers, flame retardants, processing aids, and extrusion aids.
- the gasket is ethylene '. It consists of a one-year-old olefin copolymer (A) or an ethylene copolymer composition ( ⁇ '), ( ⁇ ,'), ( ⁇ '''). This gasket has the ability to compress and seal a variety of containers without contaminating the contents. Have.
- the use of the novel gasket material disclosed herein benefits liquid containers in particular.
- Some gaskets can withstand temperatures higher than room temperature (approximately 25 °) for a short period of time, especially for “hot fill” applications. There is a need. For example, for products that need to be sterilized, a gasket with a melting point of at least 100 is required. Thus, a polymer suitable for the application can be specifically selected through the selection of an appropriate density for use in the gasket environment.
- polymers may be combined with an effective amount of copolymer (A) or composition ( ⁇ ';), ( ⁇ ' '), ( ⁇ ' '').
- a gasket can be produced in the same manner by using a combination.
- Other such polymers are thermoplastic polymers (ie, melt processable), which include highly branched low density polyethylene, heterogeneously branched and linear low molecular weight polyethylene. Includes polymers such as high density polyethylene, ethylene / vinyl acetate copolymers and copolymers of ethylene acrylate.
- the gasket produced from this copolymer ( ⁇ ) or composition ( ⁇ '), ( ⁇ ''),( ⁇ '') should have sufficient rigidity to withstand compression, Nevertheless, it should be soft enough to form a suitable seal. Therefore, various gaskets can be produced by giving the polymer the hardness appropriate for use. In this specification, the hardness is measured as “short hardness” or “short D hardness” (measured using ASTM D-224).
- Construct gasket Range of hardness in the case of ethylene- ⁇ - ethylene copolymer ( ⁇ ) or ethylene-based copolymer composition ( ⁇ '), ( ⁇ '''), ( ⁇ ''') Is in the range of 70 to 100, even when not using petroleum oils normally added for the purpose of lowering the hardness of the polymer and the resulting gasket.
- the present applicants have added the ethylene olefin copolymer (A) or the ethylene copolymer composition ( ⁇ '), ( ⁇ '), and ( ⁇ '' ').
- Additives such as antioxidants, phosphites, cling additives (such as? IB), slip additives (such as antioxidants, phosphites) to the extent that they do not interfere with the improved properties found. It can also contain additives such as elkamide, anti-block additives and pigments.
- Gaskets come in a number of different forms, including “0-rings” and flat seals (eg, “film-like” gaskets with a thickness appropriate for the intended use). Can be taken.
- Appropriate end uses include beverage capillaries, hot filter capillaries, polypropylene caps, metal caps, and high-density polyethylenes.
- the gasket made from this ethylene.
- ⁇ -olefin copolymer (A) or the ethylene copolymer composition ( ⁇ '), ( ⁇ "), ( ⁇ ''') It has a number of advantages, especially when used in food applications, including improved taste and odor compared to currently used polymer gaskets, such as ethylene-vinyl acetate.
- polar substrates eg, polyethylene terephthalate, glass, etc.
- non-polar substrates such as polypropylene and high-density polyethylene (such as polyethylene, which is a linear homopolymer or linear non-polymer); Uniform high density polyethylene ), Good barrier properties against oxygen, carbon dioxide and water, compared to currently used polymers (eg, ethylene vinyl acetate, etc.).
- High melting point, good stress crack resistance, chemical resistance Good qualities and variable hardness in certain packaging the gasket stiffness depends on the amount of torque required to seal the container and the internal pressure of the container) Force that needs to be raised or lowered, which is effective).
- the gaskets claimed herein may also be made using conventional techniques, such as using an extruded sheet or film, such as a blown film, cast film or extruded coated film, and then using the extruded sheet or film. It can also be manufactured by stamping or cutting gaskets from sheets or films. Multi-layer film structures are also suitable for use in the manufacture of the gaskets disclosed herein, with a force but at least one layer (preferably an inner layer positioned adjacent to the product). ) Includes the ethylene-a-olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ ',), ( ⁇ ','). This ethylene ' ⁇ -olefin copolymer ( ⁇ ) ⁇
- a foam multilayer gasket containing the ethylene copolymer composition ( ⁇ '), ( ⁇ ' ''), ( ⁇ '' '') is also useful in the present invention.
- Extruded products include extruded coated articles.
- Extruded profiles include products in the form of profiles and extruded cast films, which are ethylene- It is composed of a naphthalene copolymer (A) or an ethylene copolymer composition ( ⁇ ′), ( ⁇ ′′), and (A ′′ ′).
- the ethylene one-year-old olefin copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ '), or ( ⁇ '' ') may be replaced with another polymer. It can be blended with a single material, and can be used to produce single-layer or multi-layer products, and can be used to construct structures such as sealants, adhesives, etc. Agents or bonding layers can be manufactured. Ethylene- ⁇ -olefin copolymer ( ⁇ ) or ethylene copolymer composition for the purpose of modifying processability, film strength, heat sealability or adhesiveness It is also possible to blend other polymer materials on the object ( ⁇ '), ( ⁇ ', :), ( ⁇ , '').
- copolymer ( ⁇ ) or the ethylene-based copolymer composition), ( ⁇ ′ ′), and ( ⁇ ′ ′) can be used in chemically and / or physically modified forms. Such modifications may be achieved by any known technique, for example, by ionizing and extruding and graphitizing.
- neck-in is defined as the difference between the die width and the width of the extruded or finished product at the take-off location. Extensive expansion of the extruded product, but to a lesser extent, surface tension effects. The measured neck-in value (at a given output) remains constant or decreases with increasing draw-down rate, and the net-in value in the case of ordinary ethylene polymers. It is well known that quin values generally increase with decreasing molecular weight and with decreasing Z or molecular weight distribution.
- Olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ")>( ⁇ ,''), and antiblocking And additives that improve the coefficient of friction characteristics including, but not limited to, primary and secondary grades in addition to untreated and treated silicon dioxide, talc, calcium carbonate and clay. And substituted fatty acid amides), a cooling agent release agent, a silicone coating material, etc.
- iemann is described in US Patent No. 4,486,552.
- the anti-ogging property of a transparent cast film It is also possible to add other additives to improve.
- Additional additives such as quaternary ammonium compounds, which improve the antistatic properties of the coatings, profiles and films of the present invention and allow, for example, the packaging or manufacture of electron sensitive products It can be added alone or in combination with ethylene monoacrylic acid (EAA) copolymers or other functional polymers.
- EAA ethylene monoacrylic acid
- the multilayer structure containing the ethylene / ⁇ -age olefin copolymer (A) or the ethylene copolymer composition ( ⁇ '), ( ⁇ ' '), ( ⁇ ' '') may be manufactured by any known means, such as extrusion, lamination, and combinations thereof.
- the ethylene / polyethylene copolymer ( ⁇ ) or the ethylene copolymer composition ( ⁇ '), ( ⁇ '), ( ⁇ ''') is a co-extrusion process.
- it can also be used, in which case a material that exhibits a higher drawdown is essentially "loaded" with one or more materials that exhibit a lower drawdown.
- Ethylene ⁇ ⁇ - ethylene copolymer ( ⁇ ) or ethylene copolymer composition ( ⁇ '), ( ⁇ ")>( ⁇ ''') has a single-layer structure or It can be used in the manufacture of extruded coatings, extruded profiles, and extruded cast films, regardless of their multilayer structure.
- the substrate or adjacent material layer may be polar or polar. May be non-polar, including but not limited to forces? And paper products, metals, ceramics, glass and various polymers, especially other polyolefins, and combinations thereof.
- Extrusion profile In the case of aisle materials, a variety of products can be processed, such as, but not limited to, gaskets for refrigerators, wire and cable jackets, and wire coats. Tubing, medical tubing, and water piping. Ethylene —Extruded casts made using olefin copolymer (A) or ethylene copolymer composition ( ⁇ '), ( ⁇ ''),( ⁇ ''') .
- Lee Lum is, c pipes in food packaging and industrial be sampled LESSON Chira-up (stretch wrap) applications are available:
- the pipe is made of the above ethylene ( ⁇ -olefin) copolymer (A) or ethylene copolymer composition ( ⁇ ′), ( ⁇ ′′), ( ⁇ ′ ′)
- a radical generator and a silane compound are added to the above ( ⁇ ) or ( ⁇ ′), ( ⁇ ′ ′), ( ⁇ ′,)), for example, Hensyl mixer
- the mixture is mixed by an appropriate mixer such as an extruder, and heated to about 140 to 250 by an extruder, Banbury mixer, etc., kneaded, and heated to produce a product.
- an appropriate mixer such as an extruder, and heated to about 140 to 250 by an extruder, Banbury mixer, etc., kneaded, and heated to produce a product.
- Radical generators used for silane modification include 2,5-dimethyl-2,5-bis (t-butylperoxy) hexane and 2,5-dimethyl-2,5-di (t- Butyl peroxy) hexine-3 is preferred.
- silane compound used for the silane modification a silane compound having a hydrolyzable organic group such as a terminal vinyl group or an alkoxy group is preferable, and vinyl trimethyxyl silane, vinyl tri Ethoxysilane is preferred.
- the pipe is obtained by cross-linking the above-mentioned molded product of the silane-modified product of (A) or ( ⁇ ′), ( ⁇ ′′), or ( ⁇ ′′).
- the molded product is obtained by silanol condensation
- the catalyst is blended and usually formed into a pipe using a pipe forming machine.
- the silanol condensation catalyst a known compound used as a catalyst for promoting dehydration condensation between silanol groups can be used.
- a master batch was prepared using a silanol condensation catalyst and unmodified linear polyethylene, and this was mixed with a silane-modified linear polyethylene, using a Henschel mixer, V-blend. After dry blending with a mixer such as a sander, this mixture may be used for pipe molding.
- the formed pipe is usually brought into contact with water for about 1 minute to 1 week in water, steam or a humid atmosphere at room temperature to about 130.
- a silanol crosslinking reaction proceeds with the silanol catalyst, and a crosslinking pipe is obtained.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99907888A EP1086963A4 (en) | 1999-03-10 | 1999-03-10 | USE OF AN ETHYLENE / -g (a) -OLEFIN COPOLYMER AND USE OF AN ETHYLENE-COPOLYMER COMPOSITION |
CN99800240A CN1111178C (zh) | 1999-03-10 | 1999-03-10 | 包含乙烯/α-烯烃共聚物的模塑制品和包含乙烯共聚物组合物的模塑制品 |
PCT/JP1999/001143 WO2000053648A1 (fr) | 1999-03-10 | 1999-03-10 | UTILISATION D'UN COPOLYMERE D'ETHYLENE/α-OLEFINE ET UTILISATION D'UNE COMPOSITION COPOLYMERE D'ETHYLENE |
KR1020027007989A KR100354881B1 (ko) | 1999-03-10 | 1999-03-10 | 에틸렌계 공중합체 조성물로 된 성형체 |
CA002288684A CA2288684A1 (en) | 1999-03-10 | 1999-03-10 | Uses of ethylene/.alpha.-olefin copolymer and uses of ethylene copolymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP1999/001143 WO2000053648A1 (fr) | 1999-03-10 | 1999-03-10 | UTILISATION D'UN COPOLYMERE D'ETHYLENE/α-OLEFINE ET UTILISATION D'UNE COMPOSITION COPOLYMERE D'ETHYLENE |
Publications (1)
Publication Number | Publication Date |
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WO2000053648A1 true WO2000053648A1 (fr) | 2000-09-14 |
Family
ID=14235138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/001143 WO2000053648A1 (fr) | 1999-03-10 | 1999-03-10 | UTILISATION D'UN COPOLYMERE D'ETHYLENE/α-OLEFINE ET UTILISATION D'UNE COMPOSITION COPOLYMERE D'ETHYLENE |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1086963A4 (ja) |
KR (1) | KR100354881B1 (ja) |
CN (1) | CN1111178C (ja) |
CA (1) | CA2288684A1 (ja) |
WO (1) | WO2000053648A1 (ja) |
Cited By (7)
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JP2006274162A (ja) * | 2005-03-30 | 2006-10-12 | Sumitomo Chemical Co Ltd | 樹脂組成物、バッグインボックス内装容器およびバッグインボックス |
JP2010510094A (ja) * | 2006-11-21 | 2010-04-02 | フイナ・テクノロジー・インコーポレーテツド | 固体状態の引き伸ばしを用いる方法でフィルムおよび成形品を製造する時に有用なポリエチレン |
JP2011052141A (ja) * | 2009-09-03 | 2011-03-17 | Tosoh Corp | エチレン系樹脂射出発泡成形体 |
US8329848B2 (en) | 2007-06-15 | 2012-12-11 | Mitsui Chemicals, Inc. | Ethylenic copolymer, composition containing the copolymer and use thereof |
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JP2015013932A (ja) * | 2013-07-04 | 2015-01-22 | 日立化成テクノサービス株式会社 | 難燃性ポリエチレン系樹脂筒状発泡体の製造方法及び該製造方法により得られる難燃性ポリエチレン系樹脂筒状発泡体 |
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EP4407000A1 (en) | 2023-01-24 | 2024-07-31 | Seal for Life Global Dutch Holding B.V. | Composition for the protection of an article against corrosion |
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- 1999-03-10 WO PCT/JP1999/001143 patent/WO2000053648A1/ja not_active Application Discontinuation
- 1999-03-10 KR KR1020027007989A patent/KR100354881B1/ko not_active IP Right Cessation
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- 1999-03-10 CN CN99800240A patent/CN1111178C/zh not_active Expired - Lifetime
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003072002A (ja) * | 2001-09-05 | 2003-03-12 | Idemitsu Unitech Co Ltd | 易開封性包装体 |
JP2006274162A (ja) * | 2005-03-30 | 2006-10-12 | Sumitomo Chemical Co Ltd | 樹脂組成物、バッグインボックス内装容器およびバッグインボックス |
JP2010510094A (ja) * | 2006-11-21 | 2010-04-02 | フイナ・テクノロジー・インコーポレーテツド | 固体状態の引き伸ばしを用いる方法でフィルムおよび成形品を製造する時に有用なポリエチレン |
US8329848B2 (en) | 2007-06-15 | 2012-12-11 | Mitsui Chemicals, Inc. | Ethylenic copolymer, composition containing the copolymer and use thereof |
JP2011052141A (ja) * | 2009-09-03 | 2011-03-17 | Tosoh Corp | エチレン系樹脂射出発泡成形体 |
CN103300617A (zh) * | 2013-06-24 | 2013-09-18 | 傲科塑料制品(张家港)有限公司 | 单滚边条 |
JP2015013932A (ja) * | 2013-07-04 | 2015-01-22 | 日立化成テクノサービス株式会社 | 難燃性ポリエチレン系樹脂筒状発泡体の製造方法及び該製造方法により得られる難燃性ポリエチレン系樹脂筒状発泡体 |
Also Published As
Publication number | Publication date |
---|---|
CA2288684A1 (en) | 2000-09-10 |
KR100354881B1 (ko) | 2002-10-11 |
EP1086963A4 (en) | 2002-07-03 |
CN1111178C (zh) | 2003-06-11 |
KR20020060270A (ko) | 2002-07-16 |
EP1086963A1 (en) | 2001-03-28 |
CN1286705A (zh) | 2001-03-07 |
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