CN102947383B - Poly-olefin resin compound, film, packaging material, multi-chamber container and cover material - Google Patents

Poly-olefin resin compound, film, packaging material, multi-chamber container and cover material Download PDF

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CN102947383B
CN102947383B CN201180029100.1A CN201180029100A CN102947383B CN 102947383 B CN102947383 B CN 102947383B CN 201180029100 A CN201180029100 A CN 201180029100A CN 102947383 B CN102947383 B CN 102947383B
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film
weight
composition
based resin
polyethylene
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CN102947383A (en
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诹访浩之
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Sumitomo Chemical Co Ltd
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Sumitomo Chemical Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • B65D81/3261Flexible containers having several compartments
    • B65D81/3266Flexible containers having several compartments separated by a common rupturable seal, a clip or other removable fastening device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00Layered products having a non-planar shape
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52Details
    • B65D75/58Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861Spouts
    • B65D75/5872Non-integral spouts
    • B65D75/5883Non-integral spouts connected to the package at the sealed junction of two package walls
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • C08L23/0807Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815Copolymers of ethene with aliphatic 1-olefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/306Resistant to heat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/30Properties of the layers or laminate having particular thermal properties
    • B32B2307/31Heat sealable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/72Density
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/732Dimensional properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00Containers; Receptacles
    • B32B2439/40Closed containers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2553/00Packaging equipment or accessories not otherwise provided for
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)
  • Bag Frames (AREA)
  • Wrappers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

The disclosed poly-olefin resin compound contains components (A) and (B) as described below. Components (A) and (B) have a total of 100 mass%: component (A) is 20-95 mass% and component (B) is 5-80 mass%. (A): Poly-olefin resin compound that satisfies requirements (a1), (a2) and (a3). (a1): The amount of monomer unit based on ethylene is 95 mol% or more (however, the total of monomer unit that constitutes poly-olefin resin is 100 mol%). (a2): The 5-carbon branching factor (Nc5) measured by 13C-NMR is less than 1000 carbon atoms per 0.1. (a3): Flow activation energy (Ea) is 40 kJ/mol or more. (B): Polypropylene resin.

Description

Polyolefin resin composite, film, wrapping material, multichamber vessel and lid material
Technical field
The present invention relates to a kind of polyolefin resin composite, use this resin combination and the film, wrapping material, multichamber vessel and the lid material that obtain.
Background technology
In packing bag and packaging vessel, from the view point of protection content, there is not the stripping of hermetic unit in conveying and in operation, the material of stopping property excellence that the mode spilt of content requires stripping strength high.On the other hand, when stripping strength is too high, existence hand not easily break a seal hermetic unit problem, sometimes break a seal time content fly out, easy separability (Kaifeng property) reduce.Like this, in the wrapping material for packing bag, packaging vessel, require the performance of stopping property and the such antinomy of easy separability (Kaifeng property), up to now, various wrapping material film is studied, motion.Such as, as using the wrapping material film having polyolefin polymkeric substance, in patent documentation 1, record a kind of wrapping body, as sealing ply, comprise polypropylene-based resin and be the composition of ethylene ' alpha '-olefin random copolymers of 75 ~ 95 % by mole based on the content of the monomeric unit of ethene.In addition, in patent documentation 2, record and be the ethylene ' alpha '-olefin random copolymers of 70 ~ 90 % by mole by the content of the monomeric unit based on ethene, be the stacked film that the propylene alpha olefin random copolymers of 80 ~ 99 % by mole and poly composition are formed based on the content of the monomeric unit of propylene.
Patent documentation 1: Japanese Laid-Open Patent Publication 61-246061 publication
Patent documentation 2: Japanese Unexamined Patent Publication 10-264332 publication
Usually, be the film that the straight-chain ethene-alpha-olefin random copolymers of 95 ~ 99 % by mole and the composition of polypropylene-based resin are formed by the content of the monomeric unit based on ethene, its stripping strength is high, so, use difficulty as easy separability film.Therefore, in patent documentation 1 and patent documentation 2, use based on the few ethene-alpha-olefin random copolymers of the monomer unit content of ethene and manifest easy separability.But the easy separability film recorded in patent documentation 1 and patent documentation 2 uses the poor ethene-alpha-olefin random copolymers based on the monomeric unit of ethene, and therefore, fusing point is low, in thermotolerance, require improvement further.
Summary of the invention
Based on described situation, the problem that the present invention will solve is, provides a kind of and is suitable for manufacturing the balancing good of easy separability and stopping property and the polyolefin resin composite of the film of excellent heat resistance, the film with the sealing ply comprising this resin combination, wrapping material and lid material.
Namely, first aspect present invention is a kind of polyolefin resin composite, it contains following composition (A) and composition (B), wherein, when the total amount of composition (A) and composition (B) is set as 100 % by weight, the content of composition (A) is for being greater than 20 % by weight and less than 95 % by weight, and the content of composition (B) is more than 5 % by weight and lower than 80 % by weight
(A): the polyethylene-based resin meeting following important document (a1), (a2) and (a3);
(a1): the content based on the monomeric unit of ethene is more than 95 % by mole (wherein, the total of the whole monomeric unit forming polyethylene-based resin being set as 100 % by mole);
(a2): utilize 13branches (the N of the carbon number 5 that C-NMR measures c5) for every 1000 carbon atoms are lower than 0.1;
(a3): the activation evergy (Ea) of flowing is more than 40kJ/mol;
(B): polypropylene-based resin.
Second aspect present invention is said polyolefins based resin composition, wherein, described composition (A) is for having the monomeric unit based on ethene and the monomeric unit based on the alpha-olefin of carbonatoms 3 ~ 20 and meeting the ethene-alpha-olefin copolymer of following important document (a4)
(a4): molecular weight distribution (Mw/Mn) is 5 ~ 25.
Third aspect present invention is a kind of polyolefin resin composite, and wherein, described composition (B) is for alfon or containing the propylene system random copolymers based on the monomeric unit more than 90 % by weight of propylene.
Fourth aspect present invention is a kind of polyolefin resin composite, it contains polyethylene-based resin (X) and polypropylene-based resin (Y), wherein, the content of polyethylene-based resin (X) is for being greater than 20 % by weight and less than 95 % by weight, the content of polypropylene-based resin (Y) is more than 5 % by weight and lower than 80 % by weight (wherein, the total amount of polyethylene-based resin (X) and polypropylene-based resin (Y) is set as 100 % by weight), and meet following important document (x1) and (x2)
(x1): utilize 13branches (the N of the carbon number more than 6 that C-NMR measures lCB) for every 1000 carbon atoms be more than 0.01, and the branches (N of carbon number 5 c5) for every 1000 carbon atoms are lower than 0.1;
(x2): melting tension force (MT when 230 DEG C; Unit is cN.) for more than 1.5cN.
Fifth aspect present invention is a kind of film, and it is made up of polyolefin resin composite described above.
Sixth aspect present invention is a kind of multilayer film, and it has the sealing ply be made up of polyolefin resin composite described above.
Seventh aspect present invention is above-mentioned film, and it is wrapping material.
Eighth aspect present invention is a kind of multichamber vessel, and it is made up of film described above.
Ninth aspect present invention is above-mentioned film, and it is lid material.
Tenth aspect present invention is a kind of container, and above-mentioned lid material and polyolefin-based resins container body seal form by it.
The present invention the 11 aspect is a kind of container, and wherein, the polyolefin-based resins container main body of above-mentioned record is made up of polyethylene-based resin or polypropylene-based resin.
The present invention the 12 aspect is a kind of film, it has the different region of 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value, and the difference of the mean peel strength in each region is more than 2.0N/15mm fabric width.
Accompanying drawing explanation
Fig. 1 is the sketch chart of the embodiment representing multichamber vessel of the present invention.
Nomenclature
1 reception room
2 peripheral parts
3 isolation parts (part between isolation reception room)
4: extract mouth
Embodiment
A mode of the present invention is a kind of polyolefin resin composite, it contains following composition (A) and composition (B), wherein, when total metering of composition (A) and composition (B) is set as 100 % by weight, the content of composition (A) is for being greater than 20 % by weight and less than 95 % by weight, the content of composition (B) is more than 5 % by weight and lower than 80 % by weight
(A): the polyethylene-based resin meeting following important document (a1), (a2) and (a3);
(a1): the content based on the monomeric unit of ethene is more than 95 % by mole (wherein, the total of the whole monomeric unit forming polyethylene-based resin being set as 100 % by mole);
(a2): utilize 13branches (the N of the carbon number 5 that C-NMR measures c5) for every 1000 carbon atoms are lower than 0.1;
(a3): the activation evergy (Ea) of flowing is more than 40kJ/mol;
(B): polypropylene-based resin.
The polyethylene-based resin of composition (A) is have monomeric unit based on ethene as the polymkeric substance of formant, can enumerate manufacture by high-pressure free radical polymerization high-pressure process low-density polyethylene, with the polycomplexation ethene-alpha-olefin copolymer etc. manufactured such as legal.Composition (A) is preferably ethene-alpha-olefin copolymer.Ethene-alpha-olefin copolymer is the alpha-olefin of ethene and carbonatoms 3 ~ 20 is carried out the ethene-alpha-olefin copolymer that copolymerization obtains, for having the multipolymer based on the monomeric unit of ethene and the monomeric unit based on the alpha-olefin of carbonatoms 3 ~ 20.As the alpha-olefin of carbonatoms 3 ~ 20, can enumerate such as: propylene, 1-butylene, 1-amylene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-dodecylene, 4-methyl-1-pentene, 4-methyl isophthalic acid-hexene etc., be preferably 1-hexene, 1-octene.In addition, the alpha-olefin of above-mentioned carbonatoms 3 ~ 20 can be used alone, and also two or more kinds may be used.
As ethene-alpha-olefin copolymer, can enumerate such as: ethylene-propylene copolymer, ethene-butene-1 copolymer, ethene-1-hexene copolymer, ethylene-l-octane copolymer, ethene-1-butylene-1-hexene copolymer, ethene-1-butylene-1-octene copolymer etc., be preferably ethene-butene-1 copolymer, ethene-1-hexene copolymer, ethene-1-butylene-1-hexene copolymer, ethene-1-butylene-1-octene copolymer.
From the view point of be clamminess suppression, the thermotolerance of film, when the total of the whole monomeric unit forming polyethylene-based resin is set as 100 % by mole, the content of the monomeric unit based on ethene in the polyethylene-based resin of composition (A) is more than 95 % by mole, is preferably more than 96 % by mole.Therefore, the content based on the monomeric unit of the alpha-olefin of carbonatoms 3 ~ 20 is less than 5 % by mole, is preferably less than 4 % by mole, is more preferably less than 3 % by mole.From the view point of the flexibility of film, when the total of the whole monomeric unit forming polyethylene-based resin is set as 100 % by mole, be preferably less than 99 % by mole.Therefore, the content based on the monomeric unit of the alpha-olefin of carbonatoms 3 ~ 20 is preferably more than 1 % by mole.
With regard to the polyethylene-based resin of composition (A), utilize 13the branches of the carbon number 5 that C-NMR measures (below, is recited as " N sometimes c5".) for every 1000 carbon atoms are lower than 0.1.N c5preferably every 1000 carbon atoms are lower than 0.05, more preferably less than 0.01, most preferably are zero.
With regard to the polyethylene-based resin of composition (A), utilize 13the branches of the carbon number more than 6 that C-NMR measures (below, is recited as " N sometimes lCB".) be preferably more than 0.01 for every 1000 carbon atoms.N lCBwhen being more than 0.01, separability is good, therefore preferably.N lCBpreferably every 1000 carbon atoms are more than 0.1.From the view point of raising stopping property, N lCBpreferably every 1000 carbon atoms are less than 1, are more preferably less than 0.7.
The N of composition (A) lCB, N c5can adjust according to polymerizing conditions such as the kind of the selection of the selection of the manufacture method such as vapour phase polymerization, slurry polymerization, polymerizing catalyst, polymerization temperature, polymerization pressure, comonomer and additions.Such as, when reducing hydrogen concentration or ethylene pressure, the N of ethene-alpha-olefin copolymer lCBbecome large.In addition, by carrying out prepolymerization, N can be made lCBincrease.
N lCBcan obtain by following method.By the 600MHz that is suitable for index in window function, use cold probe 13c-NMR spectrum, is set as 1000 by the summation at all peaks observed on 5 ~ 50ppm, the peak area at the peak near 38.09 ~ 38.27ppm with summit is set as A.This A is the value of the quantity of the branch's methine carbon being equivalent to carbon number more than 4.In order to the peak of branch's methine carbon of carbon number less than 5 with branch's methine carbon of carbon number more than 6 is separated, in window function, is suitable for Gauss, is being suitable for Gauss's 13in C-NMR spectrum, the peak that 38.21 ~ 38.27ppm observes is set as B, the peak that 38.21 ~ 38.09ppm observes is set as C.And, obtain N by following formula lCB.
N LCB=A×B/(B+C)
N c5obtain by following method.Index is suitable in window function 13in C-NMR spectrum, the summation at all peaks that 5 ~ 50ppm observes is set as 1000, obtains the peak area at the peak near 32.5 ~ 32.7ppm with summit.This peak area is the quantity (C in following constitutional formula of the branch's mesomethylene carbon being equivalent to carbon number 5 *) value.
····CH 2-CH-CH 2-····
Be explained, the position at peak of methine carbon from the branch being bonded with above-mentioned carbon number more than 5 is departed from the difference of determinator and condition determination sometimes, therefore, usually corresponds to each determinator and condition determination carries out the mensuration of mark product and determines.In addition, in spectroscopic analysis, as window function, preferably use negative exponential function.
From the view point of easy separability, the activation evergy (Ea) of the flowing of the polyethylene-based resin of composition (A) is more than 40kJ/mol, be preferably more than 50kJ/mol, be more preferably more than 55kJ/mol, more preferably more than 60kJ/mol.In addition, from the view point of stopping property, Ea is preferably below 100kJ/mol, is more preferably below 90kJ/mol.Above-mentioned Ea can change according to hydrogen concentration when being such as polymerized or ethylene pressure, and when reducing hydrogen concentration or ethylene pressure, the Ea of ethene-alpha-olefin copolymer becomes large.
The activation evergy (Ea) of flowing be based on Temperature-time superposition theorem, by shifted divisor (shift factor) (a during radian frequency (unit: rad/sec) the dependent principal curve of melting complex viscosity (unit: Pasec) at making display 190 DEG C t) numerical value that utilizes Arrhenius (Arrhenius) type equation to calculate, be the value obtained by method shown below.Namely, by the melting complex viscosity-radian frequency curve of the ethene-alpha-olefin copolymer in 130 DEG C, 150 DEG C, 170 DEG C and 190 DEG C of respective temperature (T, unit: DEG C), (unit of melting complex viscosity is Pasec, and the unit of radian frequency is rad/sec.) based on Temperature-time superposition theorem, according to the every bar melting complex viscosity-radian frequency curve at each temperature (T), obtain the shifted divisor (a at each temperature (T) obtained when the melting complex viscosity-radian frequency curves overlapped with the vinyl copolymer at 190 DEG C t), by the shifted divisor (aT) at respective temperature (T) and each temperature (T), utilize least square method to calculate [ln (a t)] and the first-order approximation formula (following (I) formula) of [1/ (T+273.16)].Then, Ea is obtained by the inclination m of this expression of first degree and following formula (II).
ln(a T)=m(1/(T+273.16))+n (I)
Ea=|0.008314×m| (II)
A t: shifted divisor
Ea: the activation evergy (unit: kJ/mol) of flowing
T: temperature (unit: DEG C)
V.4.4.4 etc. above-mentioned calculating can use commercially available software for calculation, as this software for calculation, can enumerate Rheometrics Inc. Rhios.
Be explained, shifted divisor (a t) for making two logarithmic curves of the melting complex viscosity-radian frequency in respective temperature (T) move (wherein along log (Y)=-log (X) direction of principal axis, Y-axis is set as melting complex viscosity, X-axis is set as radian frequency.), overlapping on melting complex viscosity-radian frequency curve at 190 DEG C time amount of movement, in this overlap, two logarithmic curves of the melting complex viscosity-radian frequency in respective temperature (T), corresponding to each curve, make radian frequency move as a tdoubly, melting complex viscosity is moved as 1/a tdoubly.In addition, relation conefficient when obtaining (I) formula by the value least square method of 4 of 130 DEG C, 150 DEG C, 170 DEG C and 190 DEG C is generally more than 0.99.
The mensuration of melting complex viscosity-radian frequency curve uses determination of viscoelasticity device (such as Rheometrics Inc. Rheometrics Mechanical Spectrometer RMS-800 etc.), usually solid be parallel plate, board diameter is 25mm, plate is spaced apart 1.5 ~ 2mm, strain is 5%, radian frequency carries out under being the condition of 0.1 ~ 100rad/ second.Be explained, measure under nitrogen atmosphere, in addition, preferably in mensuration sample, coordinate appropriate (such as 1000ppm in advance.) antioxidant.
The density of the polyethylene-based resin of composition (A) is generally 900 ~ 950kg/m 3.From the view point of the stability of thermotolerance, obstructive, stripping strength, this density is preferably 910kg/m 3~ 940kg/m 3, be more preferably 920kg/m3 ~ 930kg/m 3.Be explained, density use carried out the annealing recorded in JISK6760-1995 sample, measure according to substitution method in the water specified in JIS K7112-1995.
The melt flow rate (MFR) (MFR) of the polyethylene-based resin of composition (A) is generally 0.01 ~ 50g/10 minute, from the view point of raising stopping property, is preferably less than 5g/10 minute, is more preferably less than 3g/10 minute.MFR utilize specify in JIS K7210-1995 method, measure under the condition of temperature 190 DEG C, load 21.18N.
From the view point of film processibility, the molecular weight distribution (Mw/Mn) of the polyethylene-based resin of composition (A) is preferably more than 5, is more preferably more than 6, and more preferably more than 7, be particularly preferably more than 8.In addition, from the view point of the physical strength of film, the molecular weight distribution of the polyethylene-based resin of composition (A) is preferably less than 25, is more preferably less than 20.Be explained, this molecular weight distribution (Mw/Mn) is obtained the weight-average molecular weight (Mw) of polystyrene conversion and number-average molecular weight (Mn) by gel permeation chromatography, by the value (Mw/Mn) of Mw divided by Mn gained.Above-mentioned Mw/Mn can change according to hydrogen concentration when being such as polymerized or polymerization temperature, and when improving hydrogen concentration or polymerization temperature, the Mw/Mn of ethene-alpha-olefin copolymer becomes large.
With regard to the polyethylene-based resin of composition (A), be preferably 0.70 ~ 0.95 with the g* that following formula (II) defines.
g*=[η]/([η] GPC×g SCB*) (II)
[in formula, [η] represents the limiting viscosity (unit: dl/g) of polyethylene-based resin, utilizes following formula (II-I) to define.Be set as utilizing following formula (II-II) to define.G sCB* following formula (II-III) is utilized to define.
[η]=23.3×log(ηrel)(II-I)
(in formula, η rel represents the relative viscosity of polyethylene-based resin.)
[η] GPC=0.00046×Mv 0.725(II-II)
(in formula, Mv represents the viscosity-average molecular weight of polyethylene-based resin.)
g SCB*=(1-A) 1.725(II-III)
(in formula, A is the content of the short chain branch measured in polyethylene-based resin, utilizes following formula (II-V) to define.
A=((12×n+2n+1)×y)/((1000-2y-2)×14+(y+2)×15+y×13)(II-V)
In formula, n represents that branch's carbonatoms of short chain branch is (such as, as alpha-olefin, use the situation having butylene, n=2, use the situation having hexene, n=4), y represents the short chain branches of every 1000 carbon atoms utilizing NMR or infrared spectroscopy to obtain.)]
Be explained, about g*, document with reference to following: Developments in PolymerCharacterisation-4 .J.V..Dawkins .Ed., .Applied Science, London .1983, Chapter.I,. " Characterization.of.Long Chain Branching in Polymers, " Th.G.Scholte work
[η] gPCrepresent that molecular weight distribution is the molecular weight distribution identical with polyethylene-based resin and putative molecule chain is the limiting viscosity (unit: dl/g) of the polymkeric substance of straight-chain.
G sCB* the contribution to g* produced by importing short chain branch in polyethylene-based resin is represented.
Formula (II-II) uses L.H.Tung work Journal of Polymer Science, the formula recorded in 36,130 (1959) 287-294 pages.
The relative viscosity (η rel) of polyethylene-based resin can measure by following method.Containing in the tetraline 100ml as the butylhydroxy toluene (BHT) 0.5 % by weight of heat deterioration inhibitor, polyethylene-based resin 100mg is dissolved at 135 DEG C, prepare sample solution, use Ubbelodhe type viscometer, by above-mentioned sample solution with only by calculating the fall time of the blank solution formed containing the tetraline as the BHT 0.5 % by weight of heat deterioration inhibitor.
Viscosity-average molecular weight (Mv) following formula (II-IV) definition of polyethylene-based resin, if a=0.725.
M V = ( Σ μ = 1 ∞ M μ a + 1 n μ Σ μ = 1 ∞ M μ n μ ) 1 / a ( II - IV )
G* be represent result from long chain branches, the index of the shrink grading of molecule in solution; The amount of the long chain branches that per minute subchain contains is more, and the contraction of molecular chain is larger, and g* is less.From the view point of easy separability, the g* of polyethylene-based resin is preferably 0.70 ~ 0.95, is more preferably 0.75 ~ 0.90, and more preferably 0.75 ~ 0.85.When g* is less than 0.95, owing to containing long chain branches fully, therefore, stripping strength can not be too high, and easy separability is excellent, thus preferably.In addition, when g* is more than 0.70, the expansion of molecular chain during formation crystallization is abundant, so the generating probability of tie molecule (tie molecule) is high, and in addition, the time of relaxation of molecular chain is short, stopping property is excellent, thus preferably.
As the polyethylene-based resin preferably used as composition (A), the polyethylene-based resin recorded in No. 2008-106264, Japanese Unexamined Patent Publication can be enumerated.
The polypropylene-based resin of composition (B) can utilize propylene is carried out homopolymerization method, the method etc. that propylene and other copolymerizable comonomer carry out copolymerization is manufactured.As catalyst for polymerization, can enumerate such as: (a) comprises with magnesium, titanium and halogen the Ti-Mg series catalysts of the solid catalyst component being required composition; (b) with magnesium, titanium and halogen be must be combined with in the solid catalyst component of composition organo-aluminium compound and as required to ternary catalyzer systems such as electro compounds; (c) metallocene series catalysts etc.
The polypropylene-based resin of composition (B) can be the homopolymer (homo-polypropylene) of propylene, also can for based on propylene, make can with the comonomer of its copolymerization with on a small quantity, the ratio of such as less than 20 % by weight, preferably less than 10 % by weight carries out copolymerization and the multipolymer formed.Polypropylene-based resin is the situation of multipolymer, and the amount of comonomer is preferably more than 2 % by weight, is more preferably more than 3 % by weight.
In addition, when the film and sym-propene polymer resin sheet with the sealing ply comprising polyolefin resin composite of the present invention are carried out heat seal and use, composition (B) is preferably homo-polypropylene.
And when the film and polyethylene-based resin sheet with the sealing ply comprising polyolefin resin composite of the present invention are carried out heat seal and use, composition (B) is preferably the propylene copolymer containing a small amount of comonomer.
The polypropylene-based resin of composition (B) is the situation of multipolymer, as comonomer, can enumerate the alpha-olefin of ethene and carbonatoms 4 ~ 20.As the alpha-olefin of carbonatoms 4 ~ 20, can enumerate such as: 1-butylene, 1-amylene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-dodecylene, 4-methyl-1-pentene, 4-methyl isophthalic acid-hexene etc.From the view point of copolymerizable, comonomer optimal ethylene, 1-butylene, 1-amylene, 1-hexene and 1-octene, more preferably ethene, 1-butylene and 1-hexene.In addition, the alpha-olefin of above-mentioned ethene and carbonatoms 4 ~ 20 can be used alone, and also two or more kinds may be used.
When the polypropylene-based resin of composition (B) is multipolymer, multipolymer both can be random copolymers, also can be segmented copolymer.As preferred multipolymer, can be random copolymers, specifically, propylene-ethylene random copolymer, propylene/1-butene random copolymer can be enumerated.In propylene-ethylene random copolymer, propylene/1-butene random copolymer, the content of the content based on the monomeric unit of ethene, the monomeric unit based on 1-butylene can utilize such as the method recorded in the 616th page of " polymer analysis handbook " (nineteen ninety-five, the distribution of Kinokuniya bookstore) carry out infrared rays (IR) spectrometry and obtain.
With regard to the polypropylene-based resin of composition (B), according to JIS K 7210, at temperature 230 DEG C with load 21.18N measure melt flow rate (MFR) (MFR) preferably in the scope of 0.1 ~ 200g/10 minute, from the viewpoint of plasticity, more preferably in the scope of 0.5 ~ 50g/10 minute.
The stereoregularity of the polypropylene-based resin of composition (B) can be isotactic, a rule, random any one.In the present invention, from the viewpoint of thermotolerance, the polypropylene-based resin of rule or isotactic between preferably using.
The polypropylene-based resin of composition (B) can utilize such as to use and manufacture with the solution polymerization process of the hydrocarbon compounds such as hexane, heptane, octane, decane, hexanaphthene, methylcyclohexane, the benzene,toluene,xylene inert solvent that is representative, the mass polymerization that liquid monomer is used as solvent, the gaseous polymerization etc. that makes the monomer of gas directly carry out being polymerized.Utilize the polymerization of these methods both can carry out with intermittent type, also can carry out with continous way.
Polyolefin resin composite of the present invention contains the polyethylene-based resin of mentioned component (A) and the polypropylene-based resin of composition (B).With regard to the content of the composition (A) in this resin combination, composition (B), when total metering of composition (A) and composition (B) is set as 100 % by weight, the content of composition (A) is for being greater than 20 % by weight and less than 95 % by weight, and the content of composition (B) is more than 5 % by weight and lower than 80 % by weight.
In order to obtain more excellent easy separability and the balance of stopping property, the content of preferred component (A) is less than more than 25 % by weight 80 % by weight, and the content of composition (B) is less than more than 20 % by weight 75 % by weight.When the content of composition (A) is many, be favourable in the viewpoint of flexibility or shaping processability, when the content of composition (B) is many, be favourable in the viewpoint of thermotolerance.
In polyolefin resin composite of the present invention, the content of composition (A) is less than more than 40 % by weight 80 % by weight, when the content of composition (B) is below more than 20 % by weight 60 % by weight, the film with the sealing ply be made up of above-mentioned resin combination becomes following film, thus preferably: carried out each other in thermosealed purposes by sealing ply, there is the region that 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value are different, and the difference of the mean peel strength in each region is the film of more than 2.0N/15mm fabric width.More preferably the content of composition (A) is less than more than 50 % by weight 75 % by weight, and the content of composition (B) is less than more than 25 % by weight 50 % by weight.
There is the different region of 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value and the difference of the mean peel strength in each region is the film of more than 2.0N/15mm fabric width, by changing heat seal temperature in 1 film, different stripping strengths can be obtained, therefore preferably.
As the method determining region, such as, every 5 DEG C of transformation temperatures and carry out heat seal, measure stripping strength under respective heat seal temperature, determine that the maximum value of stripping strength and the difference of minimum value are lower than the maximum value of the heat seal temperature of 1.5N/15mm fabric width and minimum value.The situation being more than 15 DEG C by the difference of the maximum value of above-mentioned heat seal temperature and minimum value is set as 1 region.
When the sealing ply of above-mentioned film is sealed each other, preferably there are above-mentioned 2 different regions, the difference of mean peel strength in each region is more than 2.0N/15mm fabric width.
In addition, when sealing ply being carried out each other heat seal, the mean peel strength in preferred each region is 3N/15mm fabric width ~ 15N/15mm fabric width.
The film with the sealing ply be made up of polyolefin resin composite of the present invention is being carried out in thermosealed purposes each other with sealing ply, have the different region of 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value and the difference of the mean peel strength in each region is the film of more than 2.0N/15mm fabric width to make, the difference of the fusing point of the polyethylene-based resin of preferred component (A) and the polypropylene-based resin of composition (B) is lower than 30 DEG C.
From the same viewpoint, the density of the polyethylene-based resin of preferred component (A) is 915kg/m 3above.
From the same viewpoint, the polypropylene-based resin of preferred component (B) is propylene system random copolymers.
In addition, the film having the sealing ply be made up of polyolefin resin composite of the present invention may be used for multichamber vessel.Multichamber vessel is the container in the space (reception room) in 1 container with mutually isolated more than 2.Isolate by having carried out thermosealed part (sealing) between reception room.
As shown in Figure 1, multichamber vessel carries out thermosealed mode each other with the sealing ply of film and stacks, the part 3 formed between the peripheral part 2 of container and isolation reception room is carried out heat seal and manufactured.
If multichamber vessel such as will carry out mix; interactional many kinds of substance (medicament etc.) occurs and is partitioned to different reception rooms respectively and accommodates, in preservation, many kinds of substance does not mix, and can be kept in 1 container.Further, in use, by making the sealing between isolation reception room be communicated with, mixing is contained in the material of different reception rooms.Therefore, sealing between the reception room of isolation multichamber vessel requires to have following character: in preservation, above-mentioned sealing is not communicated with, there is the stopping property can isolated between each reception room, in use, by applying strong extruding to any one reception room, above-mentioned peeling off at least partially of sealing and the easy separability (Kaifeng property) be communicated with between reception room; Require the balancing good of stopping property and easy separability.
In addition, even if apply strong extruding to any one reception room in use, also require that the sealing of the peripheral part forming container maintains sealed state.
Popularizing in field of medicaments mainly expected by this multichamber vessel.
When the film with the sealing ply be made up of polyolefin resin composite of the present invention is used for multichamber vessel, the content of the composition (A) in this resin combination is preferably greater than 20 % by weight and is less than 40 % by weight, the content of composition (B) is preferably more than 60 % by weight and lower than 80 % by weight, more preferably the content of composition (A) is greater than 20 % by weight and is less than 30 % by weight, and the content of composition (B) is more than 70 % by weight and lower than 80 % by weight.When using the film with the sealing ply be made up of above-mentioned resin combination to manufacture multichamber vessel, by the peripheral part forming container is at high temperature carried out heat seal, even if apply strong extruding when the use of multichamber vessel to reception room, the sealing of peripheral part is not also peeled off and maintains sealed state, by the sealing between isolation reception room is carried out heat seal at low temperatures, the material of the balancing good of stopping property and easy separability can be made, therefore preferably.
When the film with the sealing ply be made up of polyolefin resin composite of the present invention is used for multichamber vessel, from the same viewpoint, the difference of the fusing point of the polyethylene-based resin of preferred component (A) and the polypropylene-based resin of composition (B) is lower than 30 DEG C.
When the film with the sealing ply be made up of polyolefin resin composite of the present invention is used for multichamber vessel, from the same viewpoint, the density of the polyethylene-based resin of preferred component (A) is 915kg/m 3above.
From the same viewpoint, the polypropylene-based resin of preferred component (B) is propylene system random copolymers.
The film being suitable for multichamber vessel of the present invention is following film: when sealing ply being carried out each other heat seal, there is the 1st region be made up of lower than the scope of the stripping strength of 4N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value, the mean peel strength in the 1st region is below the above 15N/15mm fabric width of 3N/15mm fabric width, when carrying out heat seal at the temperature higher than the 1st region, stripping strength becomes more than 30N/15mm fabric width.Now, for higher than the temperature in the 1st region and stripping strength when carrying out heat seal at least 1 temperature is more than 30N/15mm fabric width.
As the film of this character of display, the film such as above with the sealing ply be made up of polyolefin resin composite can be enumerated.
When using such film to manufacture multichamber vessel, by by formed container peripheral part for higher than above-mentioned 1st region temperature and carry out heat seal become the temperature of more than 30N/15mm fabric width in stripping strength under, even if apply strong extruding when the use of multichamber vessel to reception room, the sealing of peripheral part is not also peeled off and maintains sealed state, by the sealing between isolation reception room is carried out heat seal in the temperature range in the 1st region, the material of the balancing good of stopping property and easy separability can be made, therefore preferably.
In the unclear situation of amount when coordinating, polyethylene-based resin contained in resin combination and the amount of polypropylene-based resin can bases 13c-NMR obtains.
Index has been suitable in window function 13in C-NMR spectrum, with regard to regard to polyacrylic peak, 19.6-22.2ppm observes the peak of methyl, 28.4-29.2ppm observes the peak of methyne, 45.8-47.3ppm observes the peak of methylene radical.When the integrated value of 5 ~ 50ppm is set as 1000, the content based on the monomeric unit of propylene contained in composition can be obtained with following formula,
Propylene content (% by weight)=P × 3/1000 × 100
The integrated intensity of P:19.6-22.2ppm.
Alternate manner of the present invention is a kind of polyolefin resin composite, it contains polyethylene-based resin (X) and polypropylene-based resin (Y), wherein, the content of polyethylene-based resin (X) is for being greater than 20 % by weight and less than 95 % by weight, the content of polypropylene-based resin (Y) is more than 5 % by weight and lower than 80 % by weight (wherein, the total amount of polyethylene-based resin (X) and polypropylene-based resin (Y) is set as 100 % by weight), meet following important document (x1) and (x2).
(x1): utilize 13branches (the N of the carbon number more than 6 that C-NMR measures lCB) for every 1000 carbon atoms be more than 0.01, and the branches (N of carbon number 5 c5) for every 1000 carbon atoms are lower than 0.1;
(x2): melting tension force (MT when 230 DEG C; Unit is cN.) for more than 1.5cN.
The N of said polyolefins based resin composition of the present invention lCBwhen every 1000 carbon atoms are more than 0.1, become and be suitable for, as inflation processing, needing the composition of the film formed machining of melting tension force, thus preferably.In addition, the N of said polyolefins based resin composition lCBand N c5for with total metering of polyethylene-based resin (X) and polypropylene-based resin (Y) being the value of the composition measuring gained of 100 % by weight.
With regard to melting tension force (MT) during temperature 190 DEG C with regard to polyolefin resin composite of the present invention, from the view point of the composition becoming the film formed machining being more suitable for needing melting tension force, be preferably 1.7cN ~ 10cN, be more preferably 2.0cN ~ 10cN.In addition, the MT of said polyolefins based resin composition is be the value of the composition measuring gained of 100 % by weight with total metering of polyethylene-based resin (X) and polypropylene-based resin (Y).
Melting tension force (MT; Unit is cN.) by use by Toyo Seiki make institute wait the melt tension trier of sale, in temperature be the condition of 230 DEG C under, by the molten resin being filled in the bucket of 9.5mm φ with piston rotation perdurability 5.5mm/ minute, carry out melt extruding from the hole of diameter 2.09mm φ, length 8mm and make molten resin tow, by the roller of this tow use diameter 150mm, make speed of rotation per minute rising 40rpm/ minute while when reeling, the tension value before above-mentioned tow disconnects.
[polyethylene-based resin (X)]
As polyethylene-based resin (X), the ethene-alpha-olefin copolymer had based on the monomeric unit of ethene and the monomeric unit based on the alpha-olefin of carbonatoms 3 ~ 20 can be enumerated, from the view point of be clamminess suppression, the thermotolerance of film, when the total of the whole monomeric unit forming polyethylene-based resin (X) is set as 100 % by mole, the content of the monomeric unit based on ethene in polyethylene-based resin (X) is preferably more than 95 % by mole, and the content based on the monomeric unit of the alpha-olefin of carbonatoms 3 ~ 20 is preferably less than 5 % by mole.
The utilization of polyethylene-based resin (X) 13branches (the N of the carbon number 5 that C-NMR measures c5) preferably every 1000 carbon atoms are lower than 0.1.N c5more preferably every 1000 carbon atoms are lower than 0.05, preferred lower than 0.01 further, are particularly preferably zero.
Branches (the N of the carbon number more than 6 of polyethylene-based resin (X) lCB) preferably every 1000 carbon atoms be less than more than 01.Such as, as N lCBbe the polyethylene-based resin of more than 0.01, above-mentioned polyethylene-based resin (A) can be enumerated, as N lCBbe more than 0 and lower than 0.01 polyethylene-based resin, straight-chain Low Density Polyethylene can be enumerated.
With the branches (N of the carbon number more than 6 of polyolefin resin composite lCB) adjust the N of polyethylene-based resin (X) contained in resin combination for every 1000 carbon atoms mode that is more than 0.01 lCB, polypropylene-based resin (Y) N lCB, polyethylene-based resin (X) and polypropylene-based resin (Y) content.As polyethylene-based resin (X), at use N lCBbe more than 0 and polyethylene-based resin lower than 0.01 when, as polypropylene-based resin (Y), use N lCBit is the polypropylene-based resin of more than 0.01.
The activation evergy (Ea) of polyethylene-based resin (X) is preferably more than 10kJ/mol below 100kJ/mol.Such as, be more than 10kJ/mol as Ea and lower than the polyethylene-based resin of 40kJ/mol, straight-chain Low Density Polyethylene can be enumerated, be more than 40kJ/mol as Ea and lower than the polyethylene-based resin of 100kJ/mol, above-mentioned polyethylene-based resin (A) can be enumerated.
The melt flow rate (MFR) (MFR) of polyethylene-based resin (X) is 0.01 ~ 50g/10 minute, from the view point of raising stopping property, is preferably less than 5g/10 minute.MFR utilize specify in JIS K7210-1995 method, measure under the condition of temperature 190 DEG C, load 21.18N.
As polyethylene-based resin (X), the polyethylene-based resin of preferred component (A).
[polypropylene-based resin (Y)]
As polypropylene-based resin (Y), can enumerate propylene homopolymer (homo-polypropylene) and based on propylene, make can with the comonomer of its copolymerization with on a small quantity, the ratio of such as less than 20 % by weight, preferably less than 10 % by weight carries out copolymerization and the multipolymer formed.
Branches (the N of the carbon number more than 6 of polypropylene-based resin (Y) lCB) preferably every 1000 carbon atoms be less than more than 01.
The melt flow rate (MFR) (MFR) of polypropylene-based resin (Y) is generally 0.01 ~ 200g/10 minute, in order to the melting tension force (MT) when 230 DEG C of the polyolefin resin composite containing polyethylene-based resin (X) and polypropylene-based resin (Y) is set as more than 1.5cN, the MFR of polypropylene-based resin (Y) is preferably less than 10g/10 minute.The MFR of polypropylene-based resin utilize specify in JIS K7210-1995 method, measure under the condition of temperature 230 DEG C, load 21.18N.
As polypropylene-based resin (Y), the polypropylene-based resin of preferred component (B).
Use polyolefin resin composite containing composition (A) and composition (B) of the present invention and the polyolefin resin composite containing polyethylene-based resin (X) and polypropylene-based resin (Y) and the film that obtains, the balancing good of its easy separability and stopping property, and thermotolerance is also excellent.Use polyolefin resin composite and the film that obtains both can be individual layer, also can for being laminated with the stacked film of other layer of more than the layer and one deck that are made up of above-mentioned resin combination.When for stacked film, the layer be preferably made up of above-mentioned resin combination is the top layer of at least one party, and this layer is used as sealing ply.As other layer in stacked film, other synthetic resin layer, ply of paper, ink layer, evaporation layer, aluminium foil layer etc. can be enumerated.As other synthetic resin layer, the layer as resinous principle such as such as, polyvinyl alcohol resin saponified using polyethylene-based resin, polypropylene-based resin, polystyrene resin, vibrin, polyvinyl chloride (PVC) RESINS, polyamide resin, methacrylic resin, polyvinylidene chloride, ethylene/vinyl acetate copolymer can be enumerated.As above-mentioned polyethylene-based resin, can enumerate: Low Density Polyethylene, straight-chain Low Density Polyethylene, high-pressure process low-density polyethylene, ethylene-vinyl acetate copolymer etc.As polystyrene resin, styrene-butadiene-styrene etc. can be enumerated.
The thickness of the film be made up of polyolefin resin composite of the present invention is generally 5 ~ 500 μm.
The thickness (when for unitary film, film thickness) with the sealing layer in the film of the sealing ply be made up of polyolefin resin composite of the present invention is generally 5 ~ 150 μm, is preferably 10 ~ 100 μm.When making stacked film, film thickness is set as 100%, the thickness of sealing ply is preferably 3 ~ 70%, is more preferably 5 ~ 50%.
Use polyolefin resin composite of the present invention and the film obtained can contain more than a kind additive and other resin such as other composition, such as antioxidant, lubricant, antiblocking agent, static inhibitor, pigment, tinting material, processibility modifying agent as required.
As above-mentioned antioxidant, hindered phenol based compound and phosphorus system ester cpds can be enumerated.As hindered phenol based compound, such as 2,6-dialkyl benzene amphyls and 2-alkylphenol derivative etc. can be enumerated.As phosphorus system ester cpds, the phosphorus system ester cpds of the phosphorus atom containing 3 valencys can be enumerated, such as phosphorous acid ester based compound, diphosphite based compound etc. can be enumerated.These antioxidants can be used alone, and also two or more kinds may be used.Particularly from the view point of tone stabilization, preferably also with hindered phenol based compound and phosphorus system ester cpds.In addition, when the weight set of the film obtained using said polyolefins based resin composition is 100 % by weight, preferably containing antioxidant 0.01 ~ 1 % by weight, more preferably containing 0.03 ~ 0.5 % by weight.
As above-mentioned lubricant, can enumerate: the glyceryl ester etc. of lipid acid, fatty amide, fatty acid ester, higher fatty acid.As lipid acid, can enumerate: stearic acid, oleic acid, lauric acid etc.As fatty amide, can enumerate: oleylamide, erucicamide, ricinoleamide, two lauramides etc.As fatty acid ester, can enumerate: sorbitan ester, normal-butyl stearate etc.
As above-mentioned antiblocking agent, can enumerate: synthetic silica, native silicon dioxide, silicone resin, polymethylmethacrylate etc.As synthetic silica, can enumerate: dry type silicon-dioxide, wet silicon dioxide etc.As native silicon dioxide, diatomite etc. can be enumerated.
As above-mentioned static inhibitor, can enumerate such as: the alkyl di alkanolamide, macrogol ester, alkyldiethanolamine etc. of the lipid acid of the glyceryl ester of the lipid acid of carbonatoms 8 ~ 22, sorbitan acid esters, carbonatoms 8 ~ 22.
As above-mentioned pigment, can enumerate such as: white pigment, carbon black etc.
As other above-mentioned resin, can polyolefin-based resins etc. be enumerated, can enumerate such as: high density polyethylene(HDPE), high-pressure process low-density polyethylene, polypropylene, polybutene, elastomerics etc.
When using polyolefin resin composite of the present invention to manufacture film, after composition (A) and composition (B) or polyethylene-based resin (X) and polypropylene-based resin (Y) and the composition (above-mentioned additive and other resin etc.) that coordinates as required further being mixed with tumbler mixer, Henschel mixer etc., can be shaped as film.Can by with after the above-mentioned each composition of the mixing such as tumbler mixer, Henschel mixer, carry out melting mixing with single screw extrusion machine, multiple screw extruder etc. further or the mixing thing that carries out melting mixing by kneading machine, banbury mixers etc. and obtain is configured as film.
As the method using polyolefin resin composite of the present invention to manufacture unitary film, inflation moulding method and T-shaped mould casting forming method etc. can be enumerated.As the manufacture method of stacked film, coextrusion inflation moulding method, coextrusion T-shaped mould casting forming method, coextrusion method cascading into shape etc. can be utilized to manufacture.In addition, can enumerate: coextrusion method cascading into shape; Dry type layered manner is utilized to fit the method for preshaped film; The method etc. of heat pressurization is carried out after stacked preshaped film.
Film of the present invention is due to the balancing good of easy separability and stopping property, and thermotolerance is also excellent, therefore, is suitable for, as easy separability film, being suitable for as wrapping material.In addition, film of the present invention can be made lid material, carry out sealing with polyolefin-based resins container main body and obtain container.Be particularly suitable for the lid material as the polyolefin-based resins container main body be made up of polyethylene-based resin or polypropylene-based resin.
In addition, film of the present invention also can manifest stopping property and easy separability when being sealed each other by this film, therefore, may be used for the various uses needing easy separability with 3 limit sealing bags, pillow type packaging film etc. that bread packaging, poultry pork pies dress, cake bag etc. are representative.In addition, the sealing material as multichamber vessel also can preferably use.
Below, the present invention will be described to utilize embodiment and comparative example.
The physical property of embodiment and comparative example measures according to following method.
(1) melt flow rate (MFR) (MFR, unit: g/10 minute) of polyethylene-based resin and polypropylene-based resin
According to the method specified in JIS K 7210-1995, with load 21.18N, polyethylene-based resin under the condition of temperature 190 DEG C, polypropylene-based resin measures under the condition of temperature 230 DEG C.
(2) density (unit: kg/m of polyethylene-based resin 3)
Measure according to the method specified in the A method in JIS K 7112-1995.Be explained, measure coupons carry out annealing according to the method for the Low Density Polyethylene recorded in JIS K6760-1995 and for measure.
(3) molecular weight distribution (Mw/Mn, unit:-) of polyethylene-based resin
Use gel permeation chromatography (GPC) method, utilize following condition (1) ~ (9) to measure weight-average molecular weight (Mw) and number-average molecular weight (Mn), obtain molecular weight distribution (Mw/Mn).
Condition determination
(1) device: Waters Inc. 150CVALC/GPC
(2) separator column: Showa electrician Inc. Shodex GPC AT-806MS
(3) temperature: 140 DEG C
(4) solvent: orthodichlorobenzene
(5) stripping solvent flow rate: 1.0ml/ minute
(6) sample solution concentration: 1mg/ml
(7) injection rate is measured: 400 μ l
(8) molecular weight standard material: polystyrene standard (Dong Cao Inc.; Molecular weight=6000000 ~ 500)
(9) detector: differential refraction
(4) activation evergy (Ea, unit: kJ/mol) of the flowing of polyethylene-based resin
Use determination of viscoelasticity device (Rheometrics Inc. Rheometrics MechanicalSpectrometer RMS-800), melting complex viscosity-radian frequency curve measure 130 DEG C, 150 DEG C, 170 DEG C and 190 DEG C under following condition determination at, then, activation evergy (Ea) is V.4.4.4 obtained by the melting complex viscosity-radian frequency curve obtained, use Rheometrics Inc. software for calculation Rhios.
< condition determination >
Solid: parallel plate
Board diameter: 25mm
Plate interval: 1.5 ~ 2mm
Strain: 5%
Radian frequency: 0.1 ~ 100rad/ second
Measure atmosphere: under nitrogen
(5) fusing point (Tm, unit: DEG C)
(5-1) fusing point of polyethylene-based resin
The sheet material being about 0.5mm from the thickness made by heat pressurization is cut the test film of about 10mg and the sheet material that formed is set as test sample, use differential scanning calorimeter (Perkinelmer Inc. DSC-7) to measure.In mensuration, after being kept 5 minutes at 150 DEG C by test sample, be cooled to 40 DEG C with 1 DEG C/min, then, keep 5 minutes at 40 DEG C, thereafter, be warming up to 150 DEG C with the speed of 10 DEG C/min.By obtaining fusing point with the speed of 10 DEG C/min from the melting peak of 40 DEG C of melting curves obtained when being warming up to 150 DEG C.
(5-2) fusing point of polypropylene-based resin
The sheet material being about 0.5mm from the thickness made by heat pressurization is cut the test film of about 10mg and the sheet material that formed is set as test sample, use differential scanning calorimeter (Perkinelmer Inc. Diamond DSC) to measure.In mensuration, after being kept 5 minutes at 220 DEG C by test sample, be cooled to 150 DEG C rapidly, keep 1 minute at 150 DEG C, thereafter, be cooled to 50 DEG C with the cooling rate of 5 DEG C/min.Thereafter, after keeping 1 minute at 50 DEG C, be warming up to 180 DEG C with 5 DEG C/min, the temperature of the maximum peak of the melting endothermic curve obtained is set as fusing point (Tm).
(6) g* of polyethylene-based resin
g*=[η]/([η]GPC×gSCB*) (II)
G* is obtained according to above-mentioned formula (II).
[η] obtains by following method.First, sample solution is being prepared containing being dissolved at 135 DEG C by polyethylene-based resin 100mg in tetraline 100ml as the butylhydroxy toluene (BHT) 0.5 % by weight of heat deterioration inhibitor, use Ubbelodhe (Ubbelohde) type viscometer, by above-mentioned sample solution and the relative viscosity (η rel) calculating polyethylene-based resin fall time by the blank solution only formed containing the tetraline as the BHT 0.5 % by weight of heat deterioration inhibitor.The relative viscosity calculated (η rel) is substituted in formula (II-I), obtains [η].
[η] gPCobtain by following method.Viscosity-average molecular weight (Mv) is calculated by the measurement result of above-mentioned (3) molecular weight distribution.The Mv calculated is substituted in formula (II-II), obtains [η] gPC.
The A that will obtain according to formula (II-V) substitutes in formula (II-III), obtains g sCB*.
Be explained, the mensuration of the branch short chain number n of the short chain branch of polyethylene-based resin and the short chain branches y of every 1000 carbon atoms and calculating are according to document (Die MakromoleculareChemie, 177,449 (1976) McRae, M.A., Madams, W.F.) record method, utilize the characteristic absorption from alpha-olefin and implement.Infrared absorption spectrum uses infrared spectrophotometer (Japanese light splitting industrial FT-IR7300) to measure.
(7) calculation method of the various branches of polyethylene-based resin and resin combination
Utilize nuclear magnetic resonance of carbon method, according to following condition determination measure nuclear magnetic resonance of carbon spectrum ( 13c-NMR), the following method that calculates is utilized to obtain.
< condition determination >
Device: Bruker Inc. AVANCE600 (600MHz)
Measure probe: 10mm cold probe
Measure solvent: 1,2-dichlorobenzene/1, the mixed solution of 2-dichlorobenzene-d4=75/25 (volumetric ratio)
Measure temperature: 130 DEG C
Measuring method: proton decoupling method
Pulse fabric width: 45 degree
Pulse repetition time: 4 seconds
Assay standard: tetramethylsilane
Window function: index or Gauss
Cumulative number: 2500 times
The calculation method > of < degree of branching
Calculation method (the N of carbon number 5 c5, unit: 1/1000C)
Index has been suitable in window function 13in C-NMR spectrum, the summation at all peaks that 5 ~ 50ppm observes is set as 1000, obtains the peak area at the peak near 32.5 ~ 32.7ppm with summit.
Branches (the N of carbon number more than 6 lCB, unit: 1/1000C)
Index has been suitable in window function 13in C-NMR spectrum, the summation at all peaks that 5 ~ 50ppm observes is set as 1000, the peak area at the peak near 38.09 ~ 38.27ppm with summit is set as A.This A is the value of the branch's methine carbon being equivalent to carbon number more than 4.In order to the peak of branch's methine carbon of carbon number less than 5 with branch's methine carbon of carbon number more than 6 is separated, in window function, is suitable for Gauss, is being suitable for Gauss's 13in C-NMR spectrum, the peak that 38.21 ~ 38.27ppm observes is set as B, the peak that 38.21 ~ 38.09ppm observes is set as C.And, obtain N by following formula lCB.
N LCB=A×B/(B+C)
(8) the melting tension force (MT, unit: cN) of resin combination
Toyo Seiki is used to make made melt tension trier, be under the condition of 230 DEG C in temperature, the molten resin being filled in the bucket of 9.5mm φ was extruded from the hole of diameter for 2.09mm φ, length 8mm with piston rotation perdurability 5.5mm/ minute, the molten resin this extruded uses the wind up roll that diameter is 150mm φ to reel with the winding lift velocity of 40rpm/ minute, measures the tension value before molten resin fracture.This value is larger, represents that melting tension force is larger.
[physical property of film]
(9) the easy separability of sealing ply thermal seal each other
< heat seal >
The sealing ply of the overlapping stacked film obtained by embodiment each other after, according to following sealing conditions, use heat sealing machine (trier industrial system) to carry out heat seal.
Heat seal temperature: 110 DEG C ~ 180 DEG C (every 10 DEG C.Every 5 DEG C an of part)
The heat seal time: 1 second
Heat seal pressure: 0.3MPa
Heat seal fabric width: 20mm
< stripping strength >
The mensuration of stripping strength is carried out according to JIS K6854-2.Peeling rate is set as 300mm/ minute.As long as stripping strength is 3N/15mm fabric width ~ 15N/15mm fabric width, the stripping strength of the appropriateness for having stopping property and easy separability simultaneously just can be said.
When the maximum value of stripping strength and the difference of minimum value are more than 15 DEG C lower than the heat seal temperature of 5N/15mm fabric width, relative to the stripping strength excellent in stability of heat seal temperature, thus preferably.
(10) with the easy separability of the thermal seal of homo-polypropylene plate
< heat seal >
After the sealing ply of the overlapping stacked film obtained by embodiment and homo-polypropylene plate (thickness 0.4mm), according to following sealing conditions, heat sealing machine (trier industrial system) is used to carry out heat seal.
Heat seal temperature: 120 DEG C ~ 200 DEG C (every 10 DEG C.Every 5 DEG C an of part)
The heat seal time: 1 second
Heat seal pressure: 3.1MPa
Heat seal fabric width: 20mm
< stripping strength >
The mensuration of stripping strength is carried out according to JIS K6854-2.Peeling rate is set as 300mm/ minute.As long as stripping strength is 3N/15mm fabric width ~ 15N/15mm fabric width, the stripping strength of the appropriateness for having stopping property and easy separability simultaneously just can be said.
When the maximum value of stripping strength and the difference of minimum value are more than 15 DEG C lower than the heat seal temperature of 5N/15mm fabric width, relative to the stripping strength excellent in stability of heat seal temperature, thus preferably.
(11) with the easy separability of the thermal seal of polyethylene board
< heat seal >
After the sealing ply of the overlapping stacked film obtained by embodiment and the polyethylene board (thickness 0.25mm) that is made up of high-pressure process low-density polyethylene, according to following sealing conditions, heat sealing machine (trier industrial system) is used to carry out heat seal.
Heat seal temperature: 110 DEG C ~ 180 DEG C (every 10 DEG C.Every 5 DEG C an of part)
The heat seal time: 1 second
Heat seal pressure: 3.1MPa
Heat seal fabric width: 20mm
< stripping strength >
The mensuration of stripping strength is carried out according to JIS K6854-2.Peeling rate is set as 300mm/ minute.As long as stripping strength is 3N/15mm fabric width ~ 15N/15mm fabric width, the stripping strength of the appropriateness for having stopping property and easy separability simultaneously just can be said.
When the maximum value of stripping strength and the difference of minimum value are more than 15 DEG C lower than the heat seal temperature of 5N/15mm fabric width, relative to the stripping strength excellent in stability of heat seal temperature, thus preferably.
Embodiment 1
(1) preparation of promotor carrier
Carried out nitrogen replace have in the reactor of stirrer nitrogen circulation under, be placed in silicon-dioxide (the Debison Inc. Sylopol948 having carried out heat treated at 300 DEG C; 50% volume average particle size=55 μm; Pore capacity=1.67ml/g; Specific surface area=325m 2/ g) 2.8kg and toluene 24kg stirring.Thereafter, be cooled to after 5 DEG C, the temperature of reactor is remained on 5 DEG C, while dripped the mixing solutions of 1,1,1,3,3,3-hexamethyldisilazane 0.9kg and toluene 1.4kg with 30 minutes.After dropping terminates, at 5 DEG C, 1 stirring hour, then, is warming up to 95 DEG C, stirs and also filter for 3 hours at 95 DEG C.The solid product toluene 20.8kg obtained is cleaned 6 times.Thereafter, add toluene 7.1kg and make slurries, leaving standstill a whole night.
Drop into hexane solution (the zinc ethyl concentration: 50 % by weight) 3.46kg and hexane 2.05kg stirring of zinc ethyl in by slurries obtained above.Thereafter, be cooled to after 5 DEG C, the temperature of reactor is remained on 5 DEG C, while dripped the mixing solutions of 3,4,5-trifluoromethyl phenol 1.55kg and toluene 2.88kg with 60 minutes.After dropping terminates, stir 1 hour at 5 DEG C, then, be warming up to 40 DEG C, stir 1 hour at 40 DEG C.Thereafter, be cooled to 5 DEG C, the temperature of reactor is remained on 5 DEG C, while dripped H with 1.5 hours 2o 0.221kg.After dropping terminates, stir 1.5 hours at 5 DEG C, then, be warming up to 40 DEG C, stir 2 hours at 40 DEG C, be warming up to 80 DEG C further, stir 2 hours at 80 DEG C.After stirring, at room temperature extract supernatant liquor out to residual 16L, drop into toluene 11.6kg, then, be warming up to 95 DEG C and stir 4 hours.After stirring, at room temperature extract supernatant liquor out, obtain solid product.The solid product toluene 20.8kg obtained is cleaned 4 times, with hexane 24 liters cleaning 3 times.Thereafter, by carrying out drying, solids component is obtained (hereinafter referred to as promotor carrier (a).)。
(2) preparation of pre-polymerized catalyst composition (1)
Drop into butane 80 liters in the band stirrer autoclave having carried out the internal volume 210 liters that nitrogen replaces in advance after, drop into two (1-indenyl) the zirconium diphenyl oxide compound 91.8mmol of racemize-ethene, autoclave be warming up to 50 DEG C and stir 2 hours.Then, drop into above-mentioned promotor carrier (a) 0.7kg, autoclave is cooled to 31 DEG C, after stable in system, add ethene 0.1kg, hydrogen 0.1 liter (normal temperature and pressure volume), continue to drop into triisobutyl aluminium 267mmol and start polymerization.On one side respectively with 0.6kg/Hr and 0.5 liter (normal temperature and pressure volume) supply ethene and hydrogen continuously, while after 30 minutes, be warming up to 50 DEG C, meanwhile, by implementing the total prepolymerization of 6 hours with the supply ethene of 3.6kg/ hour and 10.9 liters (normal temperature and pressure volume)/hour continuously and hydrogen respectively.After polymerization terminates, remove ethene, butane, hydrogen etc. and residual solid at room temperature carried out vacuum-drying, obtaining every promotor carrier (a) 1g and contain the poly pre-polymerized catalyst composition (1) of 37g.
(3) manufacture of ethene-1-hexene copolymer
Use above-mentioned pre-polymerized catalyst composition (1), implement the copolymerization of ethene and 1-hexene with continous way thermopnore gas phase polymerization apparatus.Polymerizing condition is: temperature 85 DEG C, total pressure 2MPa, be 1.22% relative to the mol ratio of the hydrogen of ethene, be 1.31% relative to the mol ratio of the 1-hexene of ethene, in polymerization, in order to gas composition be maintained necessarily, supply ethene, 1-hexene, hydrogen continuously.And total powder weight of thermopnore is maintained 80kg, and the mode being 4hr with the average polymerization time supplies above-mentioned pre-polymerized catalyst composition and triisobutyl aluminium in certain proportion continuously.By polymerization, obtain ethene-1-hexene copolymer (hereinafter referred to as PE-1 with the polymerization efficiency of 20.5kg/hr.) powder.
(4) granulation of ethene-1-hexene copolymer powder
By the powder by PE-1 obtained above being utilized forcing machine (refreshing Kobe Zhi Gangsuo Inc. LCM50), carrying out granulation under input speed 50kg/hr, screw speed 450rpm, gatage 4.2mm, suction pressure 0.2MPa, resin temperature 200 ~ 230 DEG C of conditions, obtain the particle of PE-1.Table 1 represents the evaluation result of the particle of PE-1.
(5) film processing
By be 75 % by weight by the particle of PE-1 obtained above, based on the content of the monomeric unit of ethene be the Propylene-ethylene random copolymer of 5 % by weight (following, be set as PP-1.Table 1 represents the basic physical properties of PP-1.) particle be 25 % by weight matter utilization PLACO (strain) the 50mm φ processed expansion processing machine that is mixed into of mode at 210 DEG C, carry out film processing, obtain the polyolefin unitary film of thickness 30 μm.
(6) manufacture of stacked film
By said polyolefins system unitary film and biaxial stretch-formed nylon membrane (thickness 15 μm) use-testing coating machine (Kang Jing essence machine (strain) system), utilize two-solution curing type polyurethane series tackiness agent (military field pharmaceutical industries (strain) タ processed ケ ラ Star Network A310/ タ ケ ネ mono-ト A-3) to carry out the stacked processing of dry type, obtain the stacked film of the formation becoming polyolefin unitary film/adhesive layer/biaxial stretch-formed nylon membrane.In addition, in the stacked processing of dry type, after laminating at 40 DEG C aging 48 hours.Table 2 and table 7 represent the evaluation of physical property result of the stacked film obtained.
The stacked film obtained is in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 130 DEG C ~ 180 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 50 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 4.3N/15mm fabric width.
This stacked film is following film: when sealing ply is sealed against one another, has the different region of 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value, the difference of mean peel strength in each region is more than 2.0N/15mm fabric width.Namely, the first area S1 that the scope that it is the stripping strength of 0.6N/15mm fabric width that the stacked film obtained has by the difference as the heat seal temperature scope of 120 DEG C ~ 140 DEG C and the maximum value of stripping strength and minimum value is formed, and the second area S2 that the scope that to have by the difference as the heat seal temperature scope of 160 DEG C ~ 180 DEG C and the maximum value of stripping strength and minimum value be the stripping strength of 1.1N/15mm fabric width is formed, the mean peel strength P of first area S1 (S1)for 3.0N/15mm fabric width, the mean peel strength P of second area S2 (S2)for 6.6N/15mm fabric width, the mean peel strength P of S1 (S1)with the mean peel strength P of S2 (S2)difference be 3.6N/15mm fabric width.The maximum value of the heat seal temperature in S1 and the difference of minimum value are 20 DEG C, and the maximum value of the heat seal temperature in S2 and the difference of minimum value are 20 DEG C.
In addition, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 135 DEG C ~ 200 DEG C, and the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 40 DEG C.In the heat seal temperature scope of the stripping strength of display appropriateness, the maximum value of stripping strength and the difference of minimum value are 160 DEG C ~ 200 DEG C lower than the heat seal temperature scope of 5N/15mm fabric width, and stripping strength keeps stable across 40 DEG C continuously.
Embodiment 2
In blown film processing, the particle except PE-1 is 50 % by weight, the particle of PP-1 is except 50 % by weight, carries out similarly to Example 1.Table 2 and table 9 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 120 DEG C ~ 180 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 60 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 5.4N/15mm fabric width.
This stacked film is following stacked film: when sealing ply is sealed against one another, has the different region of 2 of being made up of lower than the scope of the stripping strength of 1.5N/15mm fabric width the heat seal temperature scope of more than 15 DEG C and the maximum value of stripping strength and the difference of minimum value, the difference of mean peel strength in each region is more than 2.0N/15mm fabric width.Namely, the first area S1 that the scope that it is the stripping strength of 0.7N/15mm fabric width that the stacked film obtained has by the difference as the heat seal temperature scope of 120 DEG C ~ 135 DEG C and the maximum value of stripping strength and minimum value is formed, the second area S2 that the scope that to have by the difference as the heat seal temperature scope of 160 DEG C ~ 180 DEG C and the maximum value of stripping strength and minimum value be the stripping strength of 0.2N/15mm fabric width is formed, and the mean peel strength P of first area S1 (S1)for 3.3N/15mm fabric width, the mean peel strength P of second area S2 (S2)for 8.3N/15mm fabric width, the mean peel strength P of S1 (S1)with the mean peel strength P of S2 (S2)difference be 5.0N/15mm fabric width.The maximum value of the heat seal temperature in S1 and the difference of minimum value are 15 DEG C, and the maximum value of the heat seal temperature in S2 and the difference of minimum value are 20 DEG C.
In addition, with the stripping test of polyethylene board, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 130 DEG C ~ 180 DEG C, and the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 50 DEG C.In the heat seal temperature scope of the stripping strength of display appropriateness, the maximum value of stripping strength and the difference of minimum value are 135 DEG C ~ 180 DEG C lower than the heat seal temperature scope of 5N/15mm fabric width, and stripping strength keeps stable across 45 DEG C continuously.
Embodiment 3
In blown film processing, the particle except PE-1 is 25 % by weight, the particle of PP-1 is except 75 % by weight, carries out similarly to Example 1.Table 2 and table 9 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 125 DEG C ~ 140 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 15 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 3.7N/15mm fabric width.
The 1st region that the scope that it is the stripping strength of 3.7N/15mm fabric width that this stacked film has by the difference as the heat seal temperature scope of 125 DEG C ~ 140 DEG C and the maximum value of stripping strength and minimum value is formed, the mean peel strength in the 1st region is 5.2N/15mm fabric width, stripping strength when carrying out heat seal at as 160 DEG C of the temperature higher than the 1st region is 32N/15mm fabric width, therefore, this stacked film preferably uses as the film for making multichamber vessel.
In addition, with the stripping test of polyethylene board, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 160 DEG C ~ 180 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 20 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 0.3N/15mm fabric width.
Comparative example 1
(1) film processing
By with commercially available metallocene anchor line (string) shape Low Density Polyethylene, (Sumitomo Chemical Zhu Shihui Inc. ス ミ カ セ Application E FV205: following, is set as LL-1.The basic physical properties of LL-1 shown in table 1.) particle be 75 % by weight, PP-1 be 25 % by weight matter utilization PLACO (strain) the 50mm φ processed expansion processing machine that is mixed into of mode at 210 DEG C, carry out film processing, obtain the polyethylene-based unitary film of thickness 30 μm.
(2) manufacture of stacked film
By said polyolefins system unitary film and biaxial stretch-formed nylon membrane (thickness 15 μm) use-testing coating machine (test coater) (Kang Jing essence machine (strain) system), utilize two-solution curing type polyurethane series tackiness agent (military field pharmaceutical industries (strain) タ processed ケ ラ Star Network A310/ タ ケ ネ mono-ト A-3) to carry out the stacked processing of dry type, obtain the stacked film of the formation becoming polyolefin unitary film/adhesive layer/biaxial stretch-formed nylon membrane.In addition, in the stacked processing of dry type, after laminating, at 40 DEG C aging 48 hours.Table 3, table 8 and table 9 represent the evaluation of physical property result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, there is not the heat seal temperature that display stripping strength is the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width.In addition, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 135 DEG C ~ 150 DEG C, and the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 15 DEG C.In the heat seal temperature scope of the stripping strength of display appropriateness, the maximum value of stripping strength and the difference of minimum value are 140 DEG C ~ 150 DEG C lower than the heat seal temperature scope of 5N/15mm fabric width, relative to the stripping strength poor stability of heat seal temperature.And, with the stripping test of polyethylene board, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 125 DEG C, and the heat seal temperature narrow scope of the stripping strength of display appropriateness, is not suitable as easy separability film.
Comparative example 2
In blown film processing, the particle except LL-1 is 50 % by weight, the particle of PP-1 is except 50 % by weight, carries out in the same manner as comparative example 1.Table 3, table 8 and table 9 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 125 DEG C.In addition, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 135 DEG C ~ 150 DEG C, and the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 15 DEG C.In the heat seal temperature scope of the stripping strength of display appropriateness, the maximum value of stripping strength and the difference of minimum value are 140 DEG C ~ 150 DEG C lower than the heat seal temperature scope of 5N/15mm fabric width, relative to the stripping strength poor stability of heat seal temperature.And, with the stripping test of polyethylene board, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 125 DEG C, and the heat seal temperature narrow scope of the stripping strength of display appropriateness, is not suitable as easy separability film.
Comparative example 3
In blown film processing, the particle except LL-1 is 25 % by weight, the particle of PP-1 is except 75 % by weight, carries out in the same manner as comparative example 1.Its result, the melting tension force of polyolefin resin composite is low, therefore, film occurs in film masking and disconnects, can not masking.
Comparative example 4
In blown film processing, except not using the particle of PE-1, only using except the particle of PP-1, carry out similarly to Example 1.Table 3 represents the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 140 DEG C.
Comparative example 5
(1) film processing
By with commercially available high-pressure process low-density polyethylene, (Sumitomo Chemical Zhu Shihui Inc. ス ミ カ セ Application F200-0: following, is set as LD-1.The basic physical properties of LD-1 shown in table 1.) particle be 75 % by weight, PP-1 be 25 % by weight matter utilization PLACO (strain) the 50mm φ processed expansion processing machine that is mixed into of mode at 210 DEG C, carry out film processing, obtain the polyethylene-based unitary film of thickness 30 μm.
(2) manufacture of stacked film
By said polyolefins system unitary film and biaxial stretch-formed nylon membrane (thickness 15 μm) use-testing coating machine (test coater) (Kang Jing essence machine (strain) system), utilize two-solution curing type polyurethane series tackiness agent (military field pharmaceutical industries (strain) タ processed ケ ラ Star Network A310/ タ ケ ネ mono-ト A-3) to carry out the stacked processing of dry type, obtain the stacked film of the formation becoming polyolefin unitary film/adhesive layer/biaxial stretch-formed nylon membrane.In addition, in the stacked processing of dry type, after laminating at 40 DEG C aging 48 hours.Table 4 represents the evaluation of physical property result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, there is not the heat seal temperature that display stripping strength is the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width.
Comparative example 6
In blown film processing, the particle except LD-1 is 50 % by weight, the particle of PP-1 is except 50 % by weight, carries out in the same manner as comparative example 5.Table 4 and table 9 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, there is not the heat seal temperature that display stripping strength is the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width.
In addition, with the stripping test of polyethylene board, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 120 DEG C, and the heat seal temperature narrow scope of the stripping strength of display appropriateness, is not suitable as easy separability film.
Comparative example 7
In blown film processing, except not using the particle of PP-1, only using except the particle of PE-1, carry out similarly to Example 1.Table 4 represents the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 120 DEG C.
Embodiment 4
(1) manufacture of ethene-1-hexene copolymer
Use above-mentioned pre-polymerized catalyst composition (1), implement the copolymerization of ethene and 1-hexene with continous way thermopnore gas phase polymerization apparatus.Polymerizing condition is: temperature 80 DEG C, total pressure 2MPa, be 1.48% relative to the mol ratio of the hydrogen of ethene, be 1.70% relative to the mol ratio of the 1-hexene of ethene, in polymerization, in order to gas composition be maintained necessarily, supply ethene, 1-hexene, hydrogen continuously.And, total powder weight of thermopnore is maintained 80kg, the mode being 4hr with the average polymerization time, supply above-mentioned pre-polymerized catalyst composition and triisobutyl aluminium in certain proportion continuously.By polymerization, obtain ethene-1-hexene copolymer (hereinafter referred to as PE-2 with the polymerization efficiency of 20.3kg/ hour.) powder.
(2) granulation of ethene-1-hexene copolymer powder
By the powder by PE-2 obtained above is utilized forcing machine (refreshing Kobe Zhi Gangsuo Inc. LCM50), input speed 50kg/ hour, screw speed 450rpm, gatage 4.2mm, suction pressure 0.2MPa, carry out granulation under resin temperature 200 ~ 230 DEG C of conditions, obtain the particle of PE-2.Table 1 represents the evaluation result of the particle of PE-2.
(3) film processing
By be 50 % by weight by the particle of PE-2 obtained above, the particle of PP-1 be 50 % by weight matter utilization PLACO (strain) the 50mm φ processed expansion processing machine that is mixed into of mode at 210 DEG C, carry out film processing, obtain the polyolefin unitary film of thickness 30 μm.
(4) manufacture of stacked film
By said polyolefins system unitary film and biaxial stretch-formed nylon membrane (thickness 15 μm) use-testing coating machine (test coater) (Kang Jing essence machine (strain) system), utilize two-solution curing type polyurethane series tackiness agent (military field pharmaceutical industries (strain) タ processed ケ ラ Star Network A310/ タ ケ ネ mono-ト A-3) to carry out the stacked processing of dry type, obtain the stacked film of the formation becoming polyolefin unitary film/adhesive layer/biaxial stretch-formed nylon membrane.In addition, in the stacked processing of dry type, after laminating at 40 DEG C aging 48 hours.Table 4 represents the evaluation of physical property result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 125 DEG C ~ 140 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 15 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 4.3N/15mm fabric width.
Embodiment 5
(1) manufacture of ethene-1-hexene copolymer
Use above-mentioned pre-polymerized catalyst composition (1), implement the copolymerization of ethene and 1-hexene with continous way thermopnore gas phase polymerization apparatus.Polymerizing condition is: temperature 85 DEG C, total pressure 2MPa, be 1.59% relative to the mol ratio of the hydrogen of ethene, be 1.25% relative to the mol ratio of the 1-hexene of ethene, in polymerization, in order to gas composition be maintained necessarily, supply ethene, 1-hexene, hydrogen continuously.And, total powder weight of thermopnore is maintained 80kg, the mode being 4hr with the average polymerization time, supply above-mentioned pre-polymerized catalyst composition and triisobutyl aluminium in certain proportion continuously.By polymerization, obtain ethene-1-hexene copolymer (hereinafter referred to as PE-3.) powder.
(2) granulation of ethene-1-hexene copolymer powder
By the powder by PE-3 obtained above is utilized forcing machine (refreshing Kobe Zhi Gangsuo Inc. LCM50), input speed 50kg/ hour, screw speed 450rpm, gatage 4.2mm, suction pressure 0.2MPa, carry out granulation under resin temperature 200 ~ 230 DEG C of conditions, obtain the particle of PE-3.Table 5 represents the evaluation result of the particle of PE-3.
(3) film processing
By be 50 % by weight by the particle of PE-3 obtained above, homo-polypropylene (following, be set as PP-2.Table 5 represents the basic physical properties of PP-2.) particle be 50 % by weight the T-shaped mould processing machine of matter utilization Sumitomo hoisting machinery modern (strain) 50mm processed φ that is mixed into of mode at processing temperature 250 DEG C, chill-roll temperature 70 DEG C, carry out film processing, obtain the polyolefin unitary film of thickness 30 μm.
(4) manufacture of stacked film
By said polyolefins system unitary film and biaxial stretch-formed nylon membrane (thickness 15 μm) use-testing coating machine (Kang Jing essence machine (strain) system), utilize two-solution curing type polyurethane series tackiness agent (military field pharmaceutical industries (strain) タ processed ケ ラ Star Network A310/ タ ケ ネ mono-ト A-3) to carry out the stacked processing of dry type, obtain the stacked film of the formation becoming polyolefin unitary film/adhesive layer/biaxial stretch-formed nylon membrane.In addition, in the stacked processing of dry type, after laminating at 40 DEG C aging 48 hours.Table 6 and table 7 represent the evaluation of physical property result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 180 DEG C ~ 200 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 20 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 1.0N/15mm fabric width.In addition, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 160 DEG C ~ 200 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 40 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 2.8N/15mm fabric width.
Embodiment 6
In T-shaped mould film processing, the particle except PE-3 is 25 % by weight, the particle of PP-2 is except 75 % by weight, carries out similarly to Example 5.Table 6 and table 7 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 160 DEG C ~ 200 DEG C, and the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 40 DEG C.In the heat seal temperature scope of the stripping strength of display appropriateness, the maximum value of stripping strength and the difference of minimum value are 170 DEG C ~ 200 DEG C lower than the heat seal temperature scope of 5N/15mm fabric width, and stripping strength keeps stable across 30 DEG C continuously.In addition, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 170 DEG C ~ 200 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 30 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 1.6N/15mm fabric width.
Comparative example 8
Will with MFR=3.7g/10 minute, density is for 918kg/m 3commercially available metallocene anchor line (string) shape Low Density Polyethylene (following, be set as LL-2.Table 5 represents the basic physical properties of LL-2.) particle be 50 % by weight, PP-2 be 50 % by weight the T-shaped mould processing machine of matter utilization Sumitomo hoisting machinery modern (strain) 50mm processed φ that is mixed into of mode at processing temperature 250 DEG C, chill-roll temperature 70 DEG C, carry out film processing., there is film and disconnect in its result, can not masking in film masking.
Comparative example 9
In T-shaped mould film processing, the particle except LL-2 is 25 % by weight, the particle of PP-2 is except 75 % by weight, carries out in the same manner as comparative example 8., there is film and disconnect in its result, can not masking in film masking.
Comparative example 10
In T-shaped mould film processing, except not using the particle of PE-3, only using except the particle of PP-2, carry out similarly to Example 5.Table 6 and table 8 represent the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, in sealing ply stripping test each other, display stripping strength is that the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is only 160 DEG C.In addition, with the stripping test of homo-polypropylene plate, there is not the heat seal temperature that display stripping strength is the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width.
Embodiment 7
In T-shaped mould film processing, the particle except PE-3 is 75 % by weight, the particle of PP-2 is except 25 % by weight, carries out similarly to Example 5.Table 7 represents the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, with the stripping test of homo-polypropylene plate, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 180 DEG C ~ 200 DEG C, the heat seal temperature scope of the stripping strength of display appropriateness is continuously across 20 DEG C, and the maximum value of the stripping strength in this heat seal temperature scope and the difference of minimum value are 0.2N/15mm fabric width.
Comparative example 11
In blown film processing, the particle except LD-1 is 25 % by weight, the particle of PP-1 is except 75 % by weight, carries out in the same manner as comparative example 5.Table 10 represents the evaluation result of the stacked film obtained.
With regard to the stacked film obtained, with the stripping test of polyethylene board, display stripping strength is the heat seal temperature of the stripping strength of the appropriateness of 3N/15mm fabric width ~ 15N/15mm fabric width is 140 DEG C ~ 150 DEG C, the heat seal temperature narrow scope of the stripping strength of display appropriateness, is not suitable as easy separability film.
(table 1)
(table 2)
(table 3)
(table 4)
NG: mother metal disconnects (in stripping, sealing ply disconnects, and can not peel off)
(table 5)
(table 6)
(table 7)
(table 8)
(table 9)
NG: mother metal disconnects (in stripping, sealing ply disconnects, and can not peel off)
(table 10)
The possibility of industrial application
According to the present invention, can provide a kind of and be suitable for manufacturing the balancing good of easy separability and stopping property and the polyolefin resin composite of the film of excellent heat resistance, the film with the sealing ply comprising this resin combination, wrapping material and lid material.

Claims (10)

1. a polyolefin resin composite, it contains following composition (A) and composition (B), wherein, when the total amount of composition A and composition B is set as 100 % by weight, the content of composition A is for being greater than 20 % by weight and less than 95 % by weight, the content of composition B is more than 5 % by weight and lower than 80 % by weight, and described polyolefin resin composite meets following important document x1 and x2
A: the polyethylene-based resin meeting following important document a1, a2 and a3;
A1: the content based on the monomeric unit of ethene is more than 95 % by mole, wherein, is set as 100 % by mole by the total of the whole monomeric unit forming polyethylene-based resin;
A2: utilize 13the branches N of the carbon number 5 that C-NMR measures c5for every 1000 carbon atoms are lower than 0.1;
A3: the activation evergy Ea of flowing is more than 40kJ/mol;
B: polypropylene-based resin,
X1: utilize 13the branches N of the carbon number more than 6 that C-NMR measures lCBfor every 1000 carbon atoms are more than 0.01, and the branches N of carbon number 5 c5for every 1000 carbon atoms are lower than 0.1;
Melting tension force MT during x2:230 DEG C, unit is cN, is more than 1.5cN.
2. polyolefin resin composite as claimed in claim 1, wherein,
Described composition A is the ethene-alpha-olefin copolymer having the monomeric unit based on ethene and the monomeric unit based on the alpha-olefin of carbonatoms 3 ~ 20 and meet following important document a4,
A4: molecular weight distribution mw/mn is 5 ~ 25.
3. polyolefin resin composite as claimed in claim 1 or 2, wherein,
The propylene system random copolymers that described composition B is alfon or contains based on the monomeric unit more than 90 % by weight of propylene.
4. a film, it comprises the polyolefin resin composite according to any one of claims 1 to 3.
5. a multilayer film, it has the sealing ply of the polyolefin resin composite comprised according to any one of claims 1 to 3.
6. the film as described in claim 4 or 5, it is wrapping material.
7. a multichamber vessel, it comprises the film described in claim 4 or 5.
8., as claim 4 or film according to claim 5, it is lid material.
9. a container, lid material according to claim 8 and polyolefin-based resins container body seal form by it.
10. container as claimed in claim 9, wherein,
Described polyolefin-based resins container main body is the container be made up of polyethylene-based resin or polypropylene-based resin.
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