WO2014175313A1 - シーラント用途のポリエステル系フィルム、積層体及び包装袋 - Google Patents
シーラント用途のポリエステル系フィルム、積層体及び包装袋 Download PDFInfo
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- WO2014175313A1 WO2014175313A1 PCT/JP2014/061376 JP2014061376W WO2014175313A1 WO 2014175313 A1 WO2014175313 A1 WO 2014175313A1 JP 2014061376 W JP2014061376 W JP 2014061376W WO 2014175313 A1 WO2014175313 A1 WO 2014175313A1
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- polyester film
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/514—Oriented
- B32B2307/518—Oriented bi-axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/702—Amorphous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/704—Crystalline
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/70—Food packaging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
- B32B2439/80—Medical packaging
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0645—Macromolecular organic compounds, e.g. prepolymers obtained otherwise than by reactions involving carbon-to-carbon unsaturated bonds
- C09K2200/0655—Polyesters
Definitions
- the present invention relates to a polyester film excellent in heat seal strength, and particularly relates to a polyester film for sealant excellent in heat seal strength with a polyester film, and a laminate and a packaging bag using the same.
- a multi-layer film obtained by heat-sealing or laminating a sealant film on a biaxially stretched film as a base film is used as a packaging material in many distribution articles represented by foods, pharmaceuticals and industrial products. ing.
- the innermost layer of the packaging material constituting the packaging bag, the lid material, and the like is provided with a sealant layer made of a polyolefin resin such as polyethylene or polypropylene showing high sealing strength, or a copolymer resin such as ionomer or EMMA.
- a sealant layer made of a polyolefin resin such as polyethylene or polypropylene showing high sealing strength, or a copolymer resin such as ionomer or EMMA.
- an unstretched sealant film made of a polyolefin-based resin as described in Patent Document 1 is excellent in heat-seal strength between polyolefin-based films, but an unstretched polyester-based film or a biaxially stretched polyester-based film There are disadvantages of low heat seal strength.
- the packaging material that has a sealant layer made of polyolefin resin as the innermost layer that is, the layer in contact with the contents, has the disadvantage that it easily absorbs fat and oil components and fragrance ingredients and easily changes the scent and taste of the contents. Some components in the contents are unsuitable for packaging chemical products, pharmaceuticals, foods, etc. containing organic compounds as active ingredients.
- the packaging material which has the sealant layer which consists of acrylonitrile-type resin as described in patent document 2 as an innermost layer, ie, a layer which touches the contents, is a chemical product, a pharmaceutical, a foodstuff, etc. which contain an organic compound as an active ingredient Suitable for packaging.
- the heat seal temperature must be increased.
- the present invention aims to solve the problems of the prior art as described above. That is, not only has high heat seal strength between the polyester films of the present invention, but also excellent heat seal strength with other unstretched polyester films and other biaxially stretched polyester films, and various organic compounds.
- An object of the present invention is to provide a polyester film that is difficult to adsorb and has excellent hygiene properties for use in sealants.
- Another object of the present invention is to provide a laminate comprising at least one layer of the polyester film for sealant, and a packaging bag using the laminate.
- the present invention has the following configuration.
- a polyester-based film formed of a polyester resin having ethylene terephthalate as a main constituent and the total of one or more monomer components that can be amorphous components in all monomer components being 12 mol% or more and 30 mol% or less.
- the laminate according to the second aspect wherein at least one other layer than the polyester film for sealant is a polyester film, a polyolefin film, or a polyamide film made of crystalline polyester. 4).
- the polyester film of the present invention not only has high heat seal strength between the polyester films of the present invention, but also has excellent heat seal strength with other unstretched polyester films and other biaxially stretched polyester films. Yes. Further, it is possible to provide a stretched polyester film that is difficult to adsorb various organic compounds and is used for a sanitary sealant. Moreover, the laminated body which contains the polyester film for the said sealant use as at least one layer, and a packaging bag using the same can be provided.
- the polyester film of the present invention is a film excellent in heat sealability.
- it is a film for use in a sealant having good heat sealability with a biaxially stretched polyester film made of crystalline polyester and an unstretched polyester film.
- a sealant suitable as a packaging bag can be provided. It may or may not be printed.
- the polyester film of the present invention will be described.
- the polyester used for the polyester film of the present invention is mainly composed of an ethylene terephthalate unit.
- the ethylene terephthalate unit is preferably 50 mol% or more, more preferably 60 mol% or more, in 100 mol% of the polyester structural unit.
- other dicarboxylic acid components constituting the polyester include aromatic dicarboxylic acids such as isophthalic acid, naphthalenedicarboxylic acid, and orthophthalic acid, and aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid, and decanedicarboxylic acid. And alicyclic dicarboxylic acids.
- the polyester does not contain a trivalent or higher polyvalent carboxylic acid (for example, trimellitic acid, pyromellitic acid, and anhydrides thereof).
- a trivalent or higher polyvalent carboxylic acid for example, trimellitic acid, pyromellitic acid, and anhydrides thereof.
- diol component constituting the polyester examples include aliphatic diols such as ethylene glycol, 1,3-propanediol, 1,4-butanediol, neopentyl glycol, hexanediol, and alicyclic compounds such as 1,4-cyclohexanedimethanol.
- aromatic diols such as diol and bisphenol A.
- the polyester used in the present invention is a cyclic diol such as 1,4-cyclohexanedimethanol, or a diol having 3 to 6 carbon atoms (for example, 1,3-propanediol, 1,4-butanediol, neopentyl glycol,
- a polyester having a glass transition point (Tg) adjusted to 60 to 70 ° C. containing at least one of hexanediol and the like is preferable.
- Polyester has a total of 15 or more types of monomer components that can be amorphous components in all monomer components (in 100 mol% of polyhydric alcohol component or 100 mol% of polyvalent carboxylic acid component in polyester resin). It is at least mol%, preferably at least 16 mol%, more preferably at least 17 mol%, particularly preferably at least 18 mol%. Moreover, the upper limit of the total of the monomer component which can become an amorphous component is 30 mol%.
- the crystal melting heat capacity of the polyester film can be controlled by the resin composition constituting the film and the film forming conditions such as the heat setting temperature and the draw ratio. Although this crystal melting heat capacity will be described in detail later, it is a value obtained by DSC measurement, which is a value that serves as a guide for the amount of crystals (orientated crystals during film formation and cold crystallization during temperature rise) in the film. is there.
- DSC measurement is a value that serves as a guide for the amount of crystals (orientated crystals during film formation and cold crystallization during temperature rise) in the film. is there.
- the amorphous component is 15 mol% or less, since the crystalline component in the resin constituting the film is large, the crystallization rate is too high even if the molten resin is extruded and cooled and solidified rapidly. Accurate control of crystallization becomes impossible.
- the crystal melting heat capacity can be set to 40 (J / g) or less. It is not preferable because it is difficult.
- the upper limit of the total of amorphous components is not particularly limited, but is preferably 30 mol% or less. When the amorphous component is 30 mol% or more, the film melting heat capacity can be reduced to 40 (J / g) or less by appropriately selecting the film forming conditions, but the film thickness unevenness increases. And productivity is reduced.
- the amorphous component is 30 mol% or more, the heat resistance is lowered, and the periphery of the seal portion is blocked during heat sealing (a range wider than the intended range due to heat conduction from the heating member). Therefore, it is not preferable because appropriate heat sealing becomes difficult.
- the crystal melting heat capacity ⁇ Hm can be controlled by the heat setting temperature and stretching conditions when the polyester film is formed.
- a film forming method for setting the crystal melting heat capacity ⁇ Hm of the polyester film to 10 (J / g) to 40 (J / g) will be described later.
- Examples of the monomer that can be an amorphous component include neopentyl glycol, 1,4-cyclohexanedimethanol, isophthalic acid, 1,4-cyclohexanedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 2,2-diethyl 1, 3-propanediol, 2-n-butyl-2-ethyl-1,3-propanediol, 2,2-isopropyl-1,3-propanediol, 2,2-di-n-butyl-1,3-propane Examples include diol and hexanediol.
- the crystal is crystallized when rapidly solidified from a hot melt state during film formation.
- An increase in the degree of crystallization is suppressed and the degree of crystallization is low. Therefore, it is possible to appropriately change the film forming conditions such as the heat setting temperature and the draw ratio in the subsequent film forming process to keep the crystallinity low, and the crystal melting heat capacity is set to 40 (J / g) or less. It is preferable because it becomes easy.
- the polyester preferably does not contain a diol having 8 or more carbon atoms (for example, octanediol) or a trihydric or higher polyhydric alcohol (for example, trimethylolpropane, trimethylolethane, glycerin, diglycerin, etc.). .
- the polyester also contains diethylene glycol, triethylene glycol, and polyethylene glycol, which are by-products during polymerization, as much as possible.
- various additives as necessary for example, waxes, antioxidants, antistatic agents, crystal nucleating agents, viscosity reducing agents, heat stabilizers, coloring Pigments, coloring inhibitors, ultraviolet absorbers and the like can be added.
- fine particles any one can be selected.
- inorganic fine particles silica, alumina, titanium dioxide, calcium carbonate, kaolin, barium sulfate, etc.
- organic fine particles for example, acrylic resin Examples thereof include particles, melamine resin particles, silicone resin particles, and crosslinked polystyrene particles.
- the average particle size of the fine particles is in the range of 0.05 to 3.0 ⁇ m (when measured with a Coulter counter) and can be appropriately selected as necessary.
- a method of blending the above particles into the resin forming the polyester film for example, it can be added at any stage of producing the polyester resin, but after the esterification stage or the transesterification reaction, It is preferable to add the slurry dispersed in ethylene glycol or the like at the stage before the start of the polycondensation reaction to advance the polycondensation reaction. Also, a method of blending a slurry of particles dispersed in ethylene glycol or water using a vented kneading extruder and a polyester resin material, or a dried particle and a polyester resin material using a kneading extruder It is also preferable to carry out by a method of blending and the like.
- polyester film of the present invention can be subjected to corona treatment, coating treatment, flame treatment, etc. in order to improve the adhesion of the film surface.
- the polyester film of the present invention preferably has a heat seal strength of 2 N / 15 mm or more and 20 N / 15 mm or less when the polyester films are heat sealed at 130 ° C. If the heat seal strength is less than 2 N / 15 mm, it is not preferable because it peels easily.
- the heat seal strength is preferably 2.5 N / 15 mm or more, and more preferably 3 N / 15 mm or more.
- the heat seal strength is preferably high, but the upper limit obtained at present is about 20 N / 15 mm.
- a low crystallinity is desirable for a film with high heat seal strength. If the degree of crystallinity is low (that is, there are many amorphous materials), it is considered that the amorphous material becomes soft by heating and the heat seal strength increases.
- unstretched films such as polypropylene have been often used as a sealant material for heat sealing.
- unstretched films are inferior to stretched films in productivity and mechanical strength. Therefore, the inventors have worked on the idea that the heat seal strength will be improved even if the film is stretched by forming a film having a low crystallinity even if the film is stretched.
- amorphous monomer is used as a raw material for the polyester film, and the measured value of the crystal melting heat capacity ⁇ Hm by DSC measurement is controlled within a specific range. It has been found that a film having a sufficiently low crystallinity can be obtained.
- the multilayer polyester film according to the present invention preferably has a value obtained by measuring a crystal melting heat capacity ⁇ Hm by DSC measurement of 10 (J / g) to 40 (J / g), and 15 (J / g). ) To 35 (J / g) or less.
- the size of the crystal melting heat capacity ⁇ H m by DSC measurement is a measure of the amount of crystals (orientated crystals at the time of casting) in the film. If this ⁇ H m is less than 10 (J / g), the film is amorphous and insufficient in mechanical strength, and the processability of the film is inferior.
- heat resistance is low, and the periphery of the seal part is blocked during heat sealing (a phenomenon in which sealing is performed in a wider range than intended due to heat conduction from the heating member). Is not preferable because it becomes difficult.
- the heat capacity of fusion is less than 10 (J / g)
- it is activated even under normal environmental temperature conditions, and the film is likely to be blocked when the film is stored, particularly in a state of being rolled up. It is not preferable to store in the summer when the temperature is high because blocking is likely to occur.
- the polyester films of the present invention if it exceeds 40 (J / g), the degree of crystallinity becomes too high, and the flexibility of the film is insufficient, so the polyester films of the present invention, the polyester film of the present invention and other crystalline polyesters. Since the biaxially stretched polyester film and the unstretched polyester film composed of the polyester film and other crystalline polyester are heat-sealed, the heat seal strength is lowered.
- the polyester film of the present invention has a heat seal strength of 2 N / 15 mm or more and 8 N / when the film and another biaxially stretched polyester film produced using crystalline polyester are heat sealed at 130 ° C. It is preferable that it is 15 mm or less. If the heat seal strength is less than 2 N / 15 mm, it is not preferable because it peels easily.
- the heat seal strength is preferably 2.5 N / 15 mm or more, and more preferably 3 N / 15 mm or more.
- the heat seal strength is preferably large, but the upper limit obtained at present is about 8 N / 15 mm.
- the polyester film of the present invention has a heat seal strength of 2 N / 15 mm or more and 20 N / 15 mm when heat-sealed at 130 ° C. between the film and another unstretched polyester film produced using crystalline polyester.
- the following is preferable. If the heat seal strength is less than 2 N / 15 mm, it is not preferable because it peels easily. 2.5 N / 15 mm or more is preferable, and 3 N / 15 mm or more is more preferable.
- the heat seal strength is preferably large, but the upper limit obtained at present is about 20 N / 15 mm.
- the thickness of the film is not particularly limited, but is preferably 3 ⁇ m or more and 200 ⁇ m or less. If the thickness of the film is less than 3 ⁇ m, the heat seal strength is insufficient and processing such as printing may become difficult, which is not preferable.
- the film thickness may be thicker than 200 ⁇ m, but it is not preferable because the use cost of the film increases and the chemical cost increases.
- the thickness of the film is more preferably 5 ⁇ m or more and 190 ⁇ m or less, and further preferably 7 ⁇ m or more and 180 ⁇ m or less.
- the above-described polyester film of the present invention is obtained by melt-extruding the above-described polyester raw material with an extruder to form an unstretched film, and then stretching the unstretched film uniaxially or biaxially by a predetermined method shown below.
- the polyester can be obtained by polycondensation by selecting the types and amounts of the dicarboxylic acid component and the diol component so as to contain an appropriate amount of a monomer that can be an amorphous component.
- 2 or more types of chip-like polyester can be mixed and used as a raw material of a film.
- the polyester raw material is preferably dried using a dryer such as a hopper dryer or a paddle dryer, or a vacuum dryer. After the polyester raw material is dried in such a manner, it is melted at a temperature of 200 to 300 ° C. and extruded into a film using an extruder. In extruding, any existing method such as a T-die method or a tubular method can be employed.
- an unstretched film can be obtained by quenching the extruded sheet-like molten resin.
- a method of rapidly cooling the molten resin a method of obtaining a substantially unoriented resin sheet by casting the molten resin from a die onto a rotating drum and rapidly solidifying it can be suitably employed.
- the film stretching direction may be either one of the film longitudinal (longitudinal) direction and the lateral (width) direction.
- a sequential biaxial stretching method by longitudinal stretching and transverse stretching in which longitudinal stretching is performed first and then lateral stretching will be described.
- the main orientation direction is It doesn't matter because it only changes. Simultaneous biaxial stretching may also be used.
- the unstretched film may be introduced into a longitudinal stretching machine in which a plurality of roll groups are continuously arranged.
- preheating is preferably performed with a preheating roll until the film temperature reaches 65 ° C. to 90 ° C.
- the film temperature is lower than 65 ° C., it becomes difficult to stretch the film in the longitudinal direction (that is, breakage tends to occur), which is not preferable.
- the temperature is higher than 90 ° C., the film tends to stick to the roll, and the method of soiling the roll by continuous production is accelerated.
- the longitudinal draw ratio is preferably 1 to 5 times. Since 1 time is not longitudinally stretched, in order to obtain a lateral uniaxially stretched film, the longitudinal stretching ratio is 1 time, and in order to obtain a biaxially stretched film, the longitudinal stretching is 1.1 times or more.
- the upper limit of the longitudinal draw ratio may be any number, but if it is too high, the transverse draw becomes difficult (so-called breakage occurs), so it is preferably 5 times or less.
- the film is preferably cooled once, and is preferably cooled with a cooling roll having a surface temperature of 20 to 40 ° C.
- transverse stretching at a stretching ratio of about 3.5 to 5 times at 65 to 100 ° C. in a state where both ends in the width direction of the film are held by clips in the tenter.
- preheating is preferably performed, and the preheating is preferably performed until the film surface temperature reaches 75 ° C. to 110 ° C.
- the film After transverse stretching, it is preferable to pass the film through an intermediate zone where no aggressive heating operation is performed.
- the heat of the intermediate heat treatment zone hot air itself or radiant heat
- the temperature of the transverse stretching zone becomes unstable, so the film quality becomes unstable. Therefore, it is preferable to carry out the intermediate heat treatment after passing the film after the transverse stretching and before the intermediate heat treatment through the intermediate zone over a predetermined time.
- this intermediate zone when a strip-shaped paper piece is hung in a state where the film is not passed through, the accompanying flow accompanying the running of the film, the transverse stretching zone and the middle so that the paper piece hangs almost completely in the vertical direction.
- a transit time of about 1 to 5 seconds is sufficient for the intermediate zone. If it is shorter than 1 second, the length of the intermediate zone becomes insufficient, and the heat shielding effect is insufficient.
- the intermediate zone is preferably long, but if it is too long, the facility becomes large, so about 5 seconds is sufficient.
- the crystal melting heat capacity ⁇ Hm can be controlled not only by adjusting the composition of the resin used for the polyester film but also by the heat treatment temperature and the stretching conditions when the polyester film is formed.
- the lower the heat treatment temperature the lower the crystallinity of the polyester film and the smaller the ⁇ Hm value.
- the polyester films of the present invention, the biaxially stretched polyester film composed of the polyester film of the present invention and other crystalline polyester, and the unstretched polyester film composed of the polyester film and other crystalline polyester The heat seal strength when heat sealed is improved.
- the heat treatment is preferably performed at 160 ° C. or higher.
- the heat treatment temperature was preferably 130 ° C. or lower because sufficient heat seal strength could not be obtained.
- the heat treatment temperature was preferably 130 ° C. or lower because sufficient heat seal strength could not be obtained.
- the passage time of the heat treatment zone is preferably 2 seconds or more and 20 seconds or less.
- the residence time in the heat treatment zone is preferably longer, preferably 2 seconds or longer, more preferably 5 seconds or longer, but about 20 seconds is sufficient.
- Synthesis example 1 In a stainless steel autoclave equipped with a stirrer, a thermometer and a partial reflux condenser, 100 mol% of dimethyl terephthalate (DMT) as a dicarboxylic acid component and 100 mol% of ethylene glycol (EG) as a polyhydric alcohol component, Charge ethylene glycol to a molar ratio of 2.2 times that of dimethyl terephthalate, and use 0.05 mol% of zinc acetate (based on the acid component) as a transesterification catalyst to distill out the methanol produced. The transesterification reaction was carried out.
- DMT dimethyl terephthalate
- EG ethylene glycol
- Polyester (A) was obtained. This polyester is polyethylene terephthalate.
- Synthesis example 2 In the same manner as in Synthesis Example 1, polyesters (B) to (E) shown in Table 1 were obtained.
- TPA is terephthalic acid
- BD is 1,4-butanediol
- NPG is neopentyl glycol
- CHDM is 1,4-cyclohexanedimethanol
- DEG is diethylene glycol.
- SiO 2 SiO 2 (Silicia 266 manufactured by Fuji Silysia) was added as a lubricant at a rate of 7,000 ppm with respect to the polyester.
- polyesters B, C, D, and E were 0.72 dl / g, 0.80 dl / g, 1.20 dl / g, and 0.75 dl / g, respectively.
- Each polyester was appropriately formed into a chip shape.
- the composition of each polyester is shown in Table 1.
- the polyester film evaluation method is shown below.
- Heat seal strength The seal strength was measured according to JIS Z1707. The specific procedure is briefly described below. Adhere surfaces that have not been coated or corona treated with a heat sealer. The adhesive sample was measured for T-peel strength using a tensile strength tester (manufactured by Toyo Keiki Co., Ltd .: trade name Tensilon UTM). At this time, the seal pressure is 10 N / cm 2 , the seal time is 2 seconds, the seal temperatures are 130 ° C. and 150 ° C., the measurement tensile speed is 200 mm / min, and the test piece width is 15 mm. The unit is N / 15 mm.
- the biaxially stretched polyester film used for the heat seal strength measurement with other biaxially stretched polyester film is E5100-12 ⁇ m (manufactured by Toyobo Co., Ltd.).
- the unstretched polyester film used for measuring the heat seal strength with other unstretched polyester films is A-PET-30 ⁇ m (manufactured by Toyobo Co., Ltd.).
- Judgment ⁇ Number of people who smelled 0 to 1 Judgment ⁇ , Number of people who smelled 2 to 3 Judgment ⁇ , Number of people who felt odor 4 to 16 people
- the film was cut into a 10 cm ⁇ 10 cm square, and the weight of the film was measured.
- the film is infiltrated into a container containing 500 ml of a predetermined substance (limonene manufactured by Nacalai Tesque Co., Ltd., menthol manufactured by Nacalai Tesque Co., Ltd. dissolved in ethanol at a concentration of 30%) and taken out after one week. It was.
- the film taken out was pressed with ben cotton to remove moisture, and dried in a room at a temperature of 23 ° C. and a humidity of 60% RH for one day, and then the weight of the film was measured.
- the difference in film weight obtained from the following formula (1) at that time was defined as adsorptivity.
- Adsorbability film weight after penetration-film weight before penetration ... Formula (1) This adsorptivity was determined as follows. Judgment ⁇ , 0 mg or more and 5 mg or less Judgment ⁇ , higher than 5 mg, 10 mg or less Judgment ⁇ , higher than 10 mg
- the film used other than the film shown in the examples of this patent is a commercially available 30 ⁇ m non-stretched polypropylene film for sealant and a commercially available 30 ⁇ m sealant polyacrylonitrile film.
- Example 1 The above-described polyester A, polyester B, polyester D, and polyester E were mixed at a mass ratio of 5: 66: 24: 5 and charged into an extruder. Thereafter, the mixed resin was melted at 280 ° C., extruded from a T-die, wound around a rotating metal roll cooled to a surface temperature of 30 ° C., and rapidly cooled to obtain an unstretched film having a thickness of 420 ⁇ m. At this time, the take-up speed of the unstretched film (rotational speed of the metal roll) is about 20 m / min. Met.
- the unstretched film was led to a longitudinal stretching machine in which a plurality of roll groups were continuously arranged, preheated on a preheating roll until the film temperature reached 78 ° C., and then stretched 3.5 times. Thereafter, the longitudinally stretched film was forcibly cooled by a cooling roll set at a surface temperature of 25 ° C.
- the cooled film after longitudinal stretching was led to a transverse stretching machine.
- a biaxially stretched film roll having a thickness of 30 ⁇ m was obtained by heat treatment. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3.
- the film was excellent in heat seal strength, fragrance retention, and adsorptivity.
- Example 2 A biaxially stretched film roll having a thickness of 20 ⁇ m was obtained in the same manner as in Example 1 except that the thickness of the unstretched film was changed from 420 ⁇ m to 280 ⁇ m and the film thickness after biaxial stretching was changed from 30 ⁇ m to 20 ⁇ m. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. It was an excellent film as in Example 1.
- Example 3 A biaxially stretched film roll having a thickness of 30 ⁇ m was prepared in the same manner as in Example 1 except that the thickness of the unstretched film was changed from 420 ⁇ m to 180 ⁇ m and the stretching ratio in the longitudinal direction was changed from 3.5 times to 1.5 times. Obtained. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. It was a preferred film in that the heat seal strength was higher than in Example 1.
- Example 4 A biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the heat treatment temperature after stretching in the transverse direction was changed from 95 ° C. to 120 ° C. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. Although the heat seal strength at 130 ° C. was slightly lower than Example 1, it was a preferable film overall.
- Example 5 A uniaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the thickness of the unstretched film was changed from 420 ⁇ m to 120 ⁇ m and the temperature of the transverse stretching was changed from 85 ° C. to 75 ° C. without stretching in the longitudinal direction. It was. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. It was a preferred film in that the heat seal strength was higher than in Example 1.
- Example 6 A biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the raw material B and the raw material C were replaced. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. It was a film excellent in heat seal strength as in Example 1.
- Example 7 A biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the ratio of the raw material A and the raw material B was changed and the monomer amount of the amorphous component was changed. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. Although the heat seal strength was slightly lower than that of Example 1, the film had no problem in practical use.
- Example 8 A biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the raw material A was not used, the ratio of the raw material B was increased, and the monomer amount of the amorphous component was changed. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. It was a preferable film in that the heat seal strength was higher than that in Example 1.
- Example 9 A biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1 except that the heat treatment temperature after stretching in the transverse direction was changed from 95 ° C. to 170 ° C. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. Although the heat seal strength at 130 ° C. was slightly lower than Example 1, it was a preferable film overall.
- Comparative Example 1 The ratio of the raw material A and the raw material B was changed, and the amount of monomer that could be an amorphous component in the polyester constituting the film was reduced to 10.5 mol%. Otherwise, a biaxially stretched film roll having a thickness of 30 ⁇ m was obtained in the same manner as in Example 1. And the characteristic of the obtained film was evaluated by the above-mentioned method. The evaluation results are shown in Table 3. Since the film of Comparative Example 1 had a small amount of amorphous component monomer in the polyester, it became a film having a large melting heat capacity and high crystallinity, which was inferior to Example 1 in heat seal strength and inferior to Example 1. .
- the present invention relates to a polyester film excellent in heat seal strength, and particularly excellent in heat seal strength with a polyester film, and thus can be suitably used as a sealant. Moreover, it can also be set as a laminated body with another film by making the polyester-type film of this invention into at least 1 layer, and a packaging bag can be provided from such a laminated body.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Polyesters Or Polycarbonates (AREA)
- Wrappers (AREA)
- Bag Frames (AREA)
- Sealing Material Composition (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
1. エチレンテレフタレートを主たる構成成分とし、全モノマー成分中、非晶質成分となり得る1種以上のモノマー成分の合計が12モル%以上30モル%以下であるポリエステル樹脂で形成されたポリエステル系フィルムであって、一軸又は二軸に延伸されており、下記要件(1)~(4)を満たすことを特徴とするシーラント用途のポリエステル系フィルム。
(1)ポリエステル系フィルム同士を130℃でヒートシールした時のヒートシール強度が、2N/15mm以上20N/15mm以下
(2)ポリエステル系フィルムと他の結晶性のポリエステルからなる二軸延伸ポリエステル系フィルムを130℃でヒートシールした時のヒートシール強度が、2N/15mm以上8N/15mm以下
(3)ポリエステル系フィルムと他の結晶性のポリエステルからなる無延伸ポリエステル系フィルムを130℃でヒートシールした時のヒートシール強度が2N/15mm以上20N/15mm以下
(4)DSC測定による結晶融解熱容量ΔHmが10(J/g)以上~40(J/g)以下
2. 上記第1に記載のシーラント用途のポリエステル系フィルムを少なくても1層として有していることを特徴とする積層体。
3. シーラント用途のポリエステル系フィルム以外の少なくとも他の1層が、結晶性のポリエステルからなるポリエステル系フィルム、ポリオレフィン系フィルム、又は、ポリアミド系フィルムであることを特徴とする上記第2に記載の積層体。
4. 上記第2又は第3に記載の積層体を少なくとも一部に用いたことを特徴とする包装袋。
まず、本発明のポリエステル系フィルムは、130℃で当該ポリエステル系フィルム同士をヒートシールした際のヒートシール強度が2N/15mm以上20N/15mm以下であることが好ましい。このヒートシール強度が2N/15mm未満では、容易に剥離されるので好ましくない。このヒートシール強度は2.5N/15mm以上が好ましく、3N/15mm以上がより好ましい。ヒートシール強度は大きいことが好ましいが、現状得られる上限は20N/15mm程度である。
また、熱処理ゾーンの通過時間は、2秒以上20秒以下が好ましい。熱処理ゾーンでの滞留時間は長い方が好ましく、2秒以上であることが好ましく、5秒以上であることが更に好ましいが、20秒程度で充分である。
合成例1
撹拌機、温度計および部分環流式冷却器を備えたステンレススチール製オートクレーブに、ジカルボン酸成分としてジメチルテレフタレート(DMT)100モル%と、多価アルコール成分としてエチレングリコール(EG)100モル%とを、エチレングリコールがモル比でジメチルテレフタレートの2.2倍になるように仕込み、エステル交換触媒として酢酸亜鉛を0.05モル%(酸成分に対して)用いて、生成するメタノールを系外へ留去しながらエステル交換反応を行った。その後、重縮合触媒として三酸化アンチモン0.225モル%(酸成分に対して)を添加し、280℃で26.7Paの減圧条件下、重縮合反応を行い、固有粘度0.75dl/gのポリエステル(A)を得た。このポリエステルはポリエチレンテレフタレートである。
合成例1と同様にして、表1に示したポリエステル(B)~(E)を得た。表中、TPAはテレフタル酸、BDは1,4-ブタンジオール、NPGはネオペンチルグリコール、CHDMは1,4-シクロヘキサンジメタノール、DEGはジエチレングリコールである。なお、ポリエステル(E)の製造の際には、滑剤としてSiO2(富士シリシア社製サイリシア266)をポリエステルに対して7,000ppmの割合で添加した。ポリエステルB,C,D,Eの固有粘度は、それぞれ、0.72dl/g,0.80dl/g,1.20dl/g,0.75dl/gであった。各ポリエステルは、適宜チップ状にした。各ポリエステルの組成を表1に示す。
JIS Z1707に準拠してシール強度測定実施した。具体的な手順を簡単に以下に記す。ヒートシーラーにて、サンプルのコート処理やコロナ処理等を実施していない面同士を接着。該接着サンプルを、引張強度試験機(東洋測機社製:商品名テンシロンUTM)を使用して、T時剥離強度の測定を行った。この時のシール圧力は10N/cm2、シール時間は2秒、シール温度は130℃と150℃で測定引張速度は200mm/分、試験片幅は15mm幅である。単位はN/15mmで示す。
融解熱容量は、DSC(セイコー電子工業株式会社製、DSC220)を用いて測定した。具体的には、フィルムサンプルをアルミニウムパンに10mg秤量し、20℃から約250℃まで5℃/分で昇温を行い、あらわれる吸熱ピークとベースラインで囲まれる面積(融解ピーク面積)が示す熱量を、フィルムサンプルの融解熱容量とした。
フィルムを10cm×10cmの正方形に裁断し、2枚を重ね合わせ、3辺を130℃でヒートシールして、1辺のみが開いている袋を作成した。その中に所定の物質(ナカライテスク株式会社製のリモネン、ナカライテスク株式会社製のメントール)を20g入れた後、開いている1辺もヒートシールして密封の袋を作成した。その袋を1000mlの容量のガラス容器を入れて蓋をした。1週間後に人(年齢20代4人、30代4人、40代4人、50代4人の計16人。なお男女の比率は 各年代で半々となるようにした)がガラス容器の蓋を中の空気の匂いを嗅げるように開け、ガラス容器中の空気の匂いを嗅ぎ、以下のようにして判定した。
判定 ○ 、 匂いを感じた人の人数 0~1人
判定 △ 、 匂いを感じた人の人数 2~3人
判定 × 、 匂いを感じた人の人数 4~16人
フィルムを10cm×10cmの正方形に裁断し、フィルムの重さを測定した。次に所定の物質(ナカライテスク株式会社製のリモネン、ナカライテスク株式会社製のメントールを、エタノール中に濃度30%で溶解させた)を500ml入れた容器中にフィルムを浸透させ、1週間後に取り出した。取り出したフィルムをベンコットンで押さえて水分をとり、温度23℃・湿度60%RHの部屋で1日乾燥させた後にフィルムの重さを測定した。その時の下式(1)より求められたフィルム重さの差を吸着性とした。
吸着性 = 浸透後のフィルム重さ - 浸透前のフィルム重さ ・・・式(1)
この吸着性を以下のように判定した。
判定 ○ 、 0mg以上5mg以下
判定 △ 、 5mgより高く、10mg以下
判定 × 、 10mgより高い
本特許の実施例で示すフィルム以外で使用したフィルムは 市販の30μmのシーラント用無延伸のポリプロプレン系フィルムと、市販の30μmのシーラント用ポリアクリロニトリル系フィルムである。
上記したポリエステルAとポリエステルBとポリエステルDとポリエステルEを質量比5:66:24:5で混合して押出機に投入した。しかる後、その混合樹脂を280℃で溶融させてTダイから押出し、表面温度30℃に冷却された回転する金属ロールに巻き付けて急冷することにより、厚さ420μmの未延伸フィルムを得た。このときの未延伸フィルムの引取速度(金属ロールの回転速度)は、約20m/min.であった。しかる後、その未延伸フィルムを、複数のロール群を連続的に配置した縦延伸機へ導き、予熱ロール上でフィルム温度が78℃になるまで予備加熱した後に3.5倍に延伸した。しかる後、縦延伸したフィルムを、表面温度25℃に設定された冷却ロールによって強制的に冷却した。
未延伸フィルムの厚みを420μmから280μmに変更し、二軸延伸後のフィルム厚みが30μmから20μmになった以外は実施例1と同様の方法で厚み20μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。実施例1と同様に優れたフィルムであった。
未延伸フィルムの厚みを420μmから180μmに変更し、縦方向の延伸倍率を3.5倍から1.5倍に変更した以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。実施例1よりも更にヒートシール強度が高い点で好ましいフィルムであった。
横方向に延伸後の熱処理温度を95℃から120℃に変更した以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。130℃でのヒートシール強度が実施例1よりやや低いが、総合的には好ましいフィルムであった。
未延伸フィルムの厚みを420μmから120μmに変更し、縦方向に延伸しないで、横延伸の温度を85℃から75℃に変更した以外は実施例1と同様に厚み30μmの一軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。実施例1よりも更にヒートシール強度が高い点で好ましいフィルムであった。
原料Bと原料Cを入れ替えた以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。ヒートシール強度が高く実施例1と同様に優れたフィルムであった。
原料Aと原料Bの比率を変更し、非晶質成分のモノマー量を変更した以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。ヒートシール強度は実施例1に比較して若干低いが、実用上は問題無いフィルムであった。
原料Aの使用を無くし、原料Bの比率を高くし、非晶質成分のモノマー量を変更した以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。実施例1よりもヒートシール強度が高い点で好ましいフィルムであった。
[実施例9]
横方向に延伸後の熱処理温度を95℃から170℃に変更した以外は実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。130℃でのヒートシール強度が実施例1よりやや低いが、総合的には好ましいフィルムであった。
原料Aと原料Bの比率を変更し、フィルムを構成するポリエステル中で非晶質成分となり得るモノマー量を10.5モル%に低下させた。それ以外は 実施例1と同様の方法で厚み30μmの二軸延伸フィルムロールを得た。そして、得られたフィルムの特性を上記した方法によって評価した。評価結果を表3に示す。
比較例1のフィルムはポリエステル中における非晶質成分モノマー量が少ないため、融解熱容量が大きく結晶性が高いフィルムとなり、実施例1よりヒートシール強度がとても劣り、実施例1より劣るフィルムであった。
市販の厚み30μmのシーラント用無延伸ポリプロピレン系フィルムを用いて上記した方法によって評価した。評価結果を表3に示す。前記フィルム同士のヒートシール強度は良好であるが、他の二軸延伸ポリエステル系フィルムや他の無延伸ポリエステル系フィルムとのヒートシール強度が低いフィルムで実施例1より劣るフィルムであった。また保香性も実施例1より劣るフィルムであった。
市販の厚み30μmのシーラント用ポリアクリロニトリル系フィルムを用いて上記した方法によって評価した。評価結果を表3に示す。130℃での前記フィルム同士のヒートシール強度が低く、また他の二軸延伸ポリエステル系フィルムや他の無延伸ポリエステル系フィルムとのヒートシール強度が低いフィルムで実施例1より劣るフィルムであった。
Claims (4)
- エチレンテレフタレートを主たる構成成分とし、全モノマー成分中、非晶質成分となり得る1種以上のモノマー成分の合計が12モル%以上30モル%以下であるポリエステル樹脂で形成されたポリエステル系フィルムであって、一軸又は二軸に延伸されており、下記要件(1)~(4)を満たすことを特徴とするシーラント用途のポリエステル系フィルム。
(1)ポリエステル系フィルム同士を130℃でヒートシールした時のヒートシール強度が、2N/15mm以上20N/15mm以下
(2)ポリエステル系フィルムと他の結晶性のポリエステルからなる二軸延伸ポリエステル系フィルムを130℃でヒートシールした時のヒートシール強度が、2N/15mm以上8N/15mm以下
(3)ポリエステル系フィルムと他の結晶性のポリエステルからなる無延伸ポリエステル系フィルムを130℃でヒートシールした時のヒートシール強度が2N/15mm以上20N/15mm以下
(4)DSC測定による結晶融解熱容量ΔHmが10(J/g)以上~40(J/g)以下 - 請求項1に記載のシーラント用途のポリエステル系フィルムを少なくても1層として有していることを特徴とする積層体。
- シーラント用途のポリエステル系フィルム以外の少なくとも他の1層が、結晶性のポリエステルからなるポリエステル系フィルム、ポリオレフィン系フィルム、又は、ポリアミド系フィルムであることを特徴とする請求項2に記載の積層体。
- 請求項2又は3に記載の積層体を少なくとも一部に用いたことを特徴とする包装袋。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157030952A KR102245444B1 (ko) | 2013-04-26 | 2014-04-23 | 실란트 용도의 폴리에스테르계 필름, 적층체 및 포장 주머니 |
EP14788511.5A EP2990455B1 (en) | 2013-04-26 | 2014-04-23 | Polyester film for sealant use, laminate, and packaging bag |
CN201480023722.7A CN105189687B (zh) | 2013-04-26 | 2014-04-23 | 密封用途的聚酯系薄膜,层叠体以及包装袋 |
JP2014530445A JP6384324B2 (ja) | 2013-04-26 | 2014-04-23 | シーラント用途のポリエステル系フィルム、積層体及び包装袋 |
US14/787,027 US10421835B2 (en) | 2013-04-26 | 2014-04-23 | Polyester film for sealant use, laminate, and packaging bag |
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EP (1) | EP2990455B1 (ja) |
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CN (1) | CN105189687B (ja) |
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WO (1) | WO2014175313A1 (ja) |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5142748A (ja) * | 1974-10-11 | 1976-04-12 | Toray Industries | Netsusetsuchakuseihoriesuterufuirumu |
JPH0655717A (ja) * | 1992-08-11 | 1994-03-01 | Polyplastics Co | 積層ポリエステルフィルム |
JPH07132946A (ja) | 1993-11-08 | 1995-05-23 | Seisan Nipponsha Kk | 揮発性成分を内蔵する被包装物の包装用チヤツク付き袋体 |
JPH08281893A (ja) * | 1995-04-12 | 1996-10-29 | Daicel Chem Ind Ltd | ヒートシール性を有するポリエステルフィルムおよびその製造方法 |
JPH11975A (ja) * | 1997-06-12 | 1999-01-06 | Mitsubishi Kagaku Polyester Film Kk | 熱接着性ポリエステルフィルム |
JP2002256116A (ja) | 2001-03-02 | 2002-09-11 | Toyobo Co Ltd | 包装用フィルム |
JP2009227970A (ja) * | 2008-02-28 | 2009-10-08 | Toyobo Co Ltd | 熱収縮性ポリエステル系フィルム、およびその製造方法、包装体 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0248926A (ja) * | 1988-08-11 | 1990-02-19 | Toyobo Co Ltd | 高強力ポリエステルフィルムの製法 |
GB9902299D0 (en) | 1999-02-02 | 1999-03-24 | Du Pont | Polymeric film |
US7204501B2 (en) * | 2001-03-08 | 2007-04-17 | Gary Bang | Universal stowable step |
DE10231595A1 (de) | 2002-07-12 | 2004-01-22 | Mitsubishi Polyester Film Gmbh | Mehrschichtige, transparente, siegelfähige, biaxial orientierte Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung |
US7141293B2 (en) | 2003-04-22 | 2006-11-28 | Mitsubishi Polyester Film Gmbh | Coextruded, hot-sealable and peelable polyester film having high peeling resistance, process for its production and its use |
US7442427B2 (en) | 2003-04-22 | 2008-10-28 | Mitsubishi Polyester Film Gmbh | Coextruded, hot-sealable and peelable polyester film, process for its production and its use |
US7288312B2 (en) | 2003-04-22 | 2007-10-30 | Mitsubishi Polyester Film Gmbh | Coextruded, hot-sealable and peelable polyester film having low peeling resistance, process for its production and its use |
DE10318097A1 (de) | 2003-04-22 | 2004-11-11 | Mitsubishi Polyester Film Gmbh | Coextrudierte, heißsiegelbare und peelfähige Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung |
DE10318098A1 (de) * | 2003-04-22 | 2004-11-11 | Mitsubishi Polyester Film Gmbh | Coextrudierte, heißsiegelbare und peelfähige Polyesterfolie mit leichter Peelbarkeit, Verfahren zu ihrer Herstellung und ihre Verwendung |
US7186452B2 (en) * | 2003-04-22 | 2007-03-06 | Mitsubishi Polyester Film Gmbh | Coextruded, hot-sealable and peelable polyester film having high peeling resistance, process for its production and its use |
DE10318099A1 (de) * | 2003-04-22 | 2004-11-11 | Mitsubishi Polyester Film Gmbh | Coextrudierte, heißsiegelbare und peelfähige Polyesterfolie, Verfahren zu ihrer Herstellung und ihre Verwendung |
JP2005146112A (ja) * | 2003-11-14 | 2005-06-09 | Mitsubishi Polyester Film Copp | 板紙用貼合せフィルム |
US20080057236A1 (en) * | 2004-11-10 | 2008-03-06 | Mitsubishi Plastics, Inc. | Heat-Shrinkable Laminated Film, Molded Product and Heat-Shrinkable Label Employing the Film, and Container |
WO2006051013A2 (de) * | 2004-11-15 | 2006-05-18 | Siemens Aktiengesellschaft | Verfahren zur handhabung von software-tests |
GB0603254D0 (en) | 2006-02-17 | 2006-03-29 | Dupont Teijin Films Us Ltd | Polyester film |
JP4411556B2 (ja) | 2006-06-14 | 2010-02-10 | 東洋紡績株式会社 | 熱収縮性ポリエステル系フィルム、およびその製造方法 |
JP4882919B2 (ja) | 2006-08-30 | 2012-02-22 | 東洋紡績株式会社 | 熱収縮性ポリエステル系フィルム、およびその製造方法、包装体 |
DE102006043335A1 (de) | 2006-09-15 | 2008-03-27 | Mitsubishi Polyester Film Gmbh | Peelbare Polyesterfolie auf Basis von titankatalysierten Polyestern |
DE102006043337A1 (de) | 2006-09-15 | 2008-03-27 | Mitsubishi Polyester Film Gmbh | Beschichtete Polyesterfolie auf Basis von titankatalysierten Polyestern |
JP4560740B2 (ja) | 2007-09-25 | 2010-10-13 | 東洋紡績株式会社 | 熱収縮性ポリエステル系フィルムの製造方法、熱収縮性ポリエステル系フィルム及び包装体 |
JP4809419B2 (ja) | 2007-12-13 | 2011-11-09 | 東洋紡績株式会社 | 熱収縮性ポリエステル系フィルム、およびその製造方法 |
WO2009107591A1 (ja) | 2008-02-27 | 2009-09-03 | 東洋紡績株式会社 | 白色熱収縮性ポリエステル系フィルム、白色熱収縮性ポリエステル系フィルムの製造方法、ラベル、及び包装体 |
KR101639101B1 (ko) | 2009-05-26 | 2016-07-12 | 도요보 가부시키가이샤 | 열수축성 폴리에스테르계 필름, 그의 제조방법 및 포장체 |
CN102844170B (zh) | 2010-04-08 | 2015-03-11 | 东洋纺织株式会社 | 热收缩聚酯薄膜、以及其制造方法、包装体 |
-
2014
- 2014-04-23 US US14/787,027 patent/US10421835B2/en active Active
- 2014-04-23 EP EP14788511.5A patent/EP2990455B1/en active Active
- 2014-04-23 JP JP2014530445A patent/JP6384324B2/ja active Active
- 2014-04-23 CN CN201480023722.7A patent/CN105189687B/zh active Active
- 2014-04-23 WO PCT/JP2014/061376 patent/WO2014175313A1/ja active Application Filing
- 2014-04-23 KR KR1020157030952A patent/KR102245444B1/ko active IP Right Grant
- 2014-04-25 TW TW103114959A patent/TWI613228B/zh active
-
2018
- 2018-08-08 JP JP2018149223A patent/JP6699693B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5142748A (ja) * | 1974-10-11 | 1976-04-12 | Toray Industries | Netsusetsuchakuseihoriesuterufuirumu |
JPH0655717A (ja) * | 1992-08-11 | 1994-03-01 | Polyplastics Co | 積層ポリエステルフィルム |
JPH07132946A (ja) | 1993-11-08 | 1995-05-23 | Seisan Nipponsha Kk | 揮発性成分を内蔵する被包装物の包装用チヤツク付き袋体 |
JPH08281893A (ja) * | 1995-04-12 | 1996-10-29 | Daicel Chem Ind Ltd | ヒートシール性を有するポリエステルフィルムおよびその製造方法 |
JPH11975A (ja) * | 1997-06-12 | 1999-01-06 | Mitsubishi Kagaku Polyester Film Kk | 熱接着性ポリエステルフィルム |
JP2002256116A (ja) | 2001-03-02 | 2002-09-11 | Toyobo Co Ltd | 包装用フィルム |
JP2009227970A (ja) * | 2008-02-28 | 2009-10-08 | Toyobo Co Ltd | 熱収縮性ポリエステル系フィルム、およびその製造方法、包装体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2990455A4 |
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Also Published As
Publication number | Publication date |
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JPWO2014175313A1 (ja) | 2017-02-23 |
EP2990455A1 (en) | 2016-03-02 |
JP2018188668A (ja) | 2018-11-29 |
EP2990455B1 (en) | 2022-02-23 |
KR102245444B1 (ko) | 2021-04-29 |
US20160108171A1 (en) | 2016-04-21 |
US10421835B2 (en) | 2019-09-24 |
TWI613228B (zh) | 2018-02-01 |
CN105189687B (zh) | 2018-03-02 |
KR20160002852A (ko) | 2016-01-08 |
JP6384324B2 (ja) | 2018-09-05 |
JP6699693B2 (ja) | 2020-05-27 |
EP2990455A4 (en) | 2016-05-11 |
CN105189687A (zh) | 2015-12-23 |
TW201446830A (zh) | 2014-12-16 |
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