WO2017061164A1 - Film multicouche et son procédé de fabrication - Google Patents

Film multicouche et son procédé de fabrication Download PDF

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Publication number
WO2017061164A1
WO2017061164A1 PCT/JP2016/072276 JP2016072276W WO2017061164A1 WO 2017061164 A1 WO2017061164 A1 WO 2017061164A1 JP 2016072276 W JP2016072276 W JP 2016072276W WO 2017061164 A1 WO2017061164 A1 WO 2017061164A1
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Prior art keywords
layer
resin
multilayer film
cyclic olefin
thickness
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PCT/JP2016/072276
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English (en)
Japanese (ja)
Inventor
章晃 小野寺
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ポリプラスチックス株式会社
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Publication of WO2017061164A1 publication Critical patent/WO2017061164A1/fr

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Classifications

    • 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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes

Definitions

  • the present invention relates to a multilayer film and a method for producing the multilayer film.
  • a container that meets such needs is a container that uses a cyclic olefin resin, which is a resin having easy tearability, as a material.
  • a pouch Patent Document 1 using a laminate in which a sealant layer containing low-density polyethylene and a cyclic olefin resin and a stretched film are laminated has been proposed.
  • the container may be required to have not only easy tearability but also mechanical strength such as puncture resistance and impact resistance at the time of dropping with respect to the film used as its material.
  • the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a film having both easy tearability and mechanical strength, which can be a material for a container.
  • the present inventor is a multilayer film including at least a resin-containing layer containing a cyclic olefin resin and a polyethylene resin, and a stretched polyester resin layer, and a ratio of the cyclic olefin resin in the sealant layer, and The inventors have found that the above problems can be solved by adjusting the birefringence of the stretched polyester resin layer, and have completed the present invention. Specifically, the present invention provides the following.
  • a multilayer film including at least a sealant layer and a stretched polyester resin layer
  • the sealant layer has at least a resin-containing layer containing a cyclic olefin resin and a polyethylene resin
  • the resin-containing layer contains 30% by mass or more of a cyclic olefin resin with respect to the resin-containing layer
  • the stretched polyester resin layer has a birefringence of 0.010 or more at a wavelength of 520 nm.
  • the sealant layer has a multilayer structure composed at least of an intermediate layer, an outer layer and an inner layer sandwiching the intermediate layer, The multilayer film according to (1), wherein the intermediate layer of the sealant layer is the resin-containing layer.
  • a film having both easy tearability and mechanical strength that can be a material for a container.
  • the multilayer film of the present invention includes at least a sealant layer having at least a resin-containing layer containing a cyclic olefin resin and a polyethylene resin, and a stretched polyester resin layer having a birefringence of 0.010 or more at a wavelength of 520 nm.
  • a sealant layer having at least a resin-containing layer containing a cyclic olefin resin and a polyethylene resin
  • a stretched polyester resin layer having a birefringence of 0.010 or more at a wavelength of 520 nm.
  • the sealant layer in the present invention has at least a resin-containing layer containing a cyclic olefin resin and a polyethylene resin.
  • the resin-containing layer containing the cyclic olefin resin and the polyethylene resin in the sealant layer is also simply referred to as “resin-containing layer”.
  • the ratio of the cyclic olefin-based resin in the resin-containing layer in the sealant layer is 30% by mass or more, more preferably 40% by mass or more with respect to the resin-containing layer.
  • the upper limit of the ratio of the cyclic olefin-based resin in the resin-containing layer is not particularly limited, but is preferably 70 with respect to the resin-containing layer from the viewpoint that sufficient multilayer easy tearability can be given to the multilayer film. It is at most mass%, more preferably at most 60 mass%.
  • the ratio of the polyethylene-based resin in the resin-containing layer can be set according to the ratio of the cyclic olefin-based resin, and is preferably 30% by mass or more, more preferably 40% by mass or more with respect to the resin-containing layer.
  • the upper limit of the ratio of the polyethylene-based resin in the resin-containing layer is not particularly limited, but is preferably 70 mass with respect to the resin-containing layer from the viewpoint that sufficient linear easy tearability can be given to the multilayer film. % Or less, and more preferably 60% by mass or less.
  • the mode of the sealant layer is not particularly limited as long as the above-mentioned resin-containing layer is included, but from the viewpoint that a multilayer film excellent in easy tearability is easily obtained, it is preferable that the sealant layer has a multilayer configuration. Is more preferably a multilayer coextruded film.
  • an aspect in which the sealant layer is a single layer that is, an aspect in which the sealant layer is formed of a resin-containing layer
  • a sealant layer having a layer structure of three or more layers is composed of at least an intermediate layer, an outer layer and an inner layer sandwiching the intermediate layer.
  • the sealant layer When a multilayer film is produced by laminating a sealant layer and a stretched polyester resin layer, an outer layer in the sealant layer is in contact with the stretched polyester resin layer.
  • the sealant layer When the sealant layer has a multilayer structure of three or more layers, it may have additional layers such as a second intermediate layer and a third intermediate layer in addition to the intermediate layer, the inner layer and the outer layer. That is, the intermediate layer may be composed of a plurality of layers. In a preferred embodiment, the intermediate layer is a resin-containing layer.
  • the sealant layer has a layer structure of three or more layers, and the intermediate layer preferably contains 30% by mass or more, and more preferably 40% by mass or more of the cyclic olefin resin with respect to the intermediate layer. Is obtained.
  • the upper limit of the ratio of the cyclic olefin-based resin contained in the intermediate layer is not particularly limited, but is preferably 70% by mass with respect to the intermediate layer from the viewpoint that sufficient linear easy tearability can be given to the multilayer film. % Or less, and more preferably 60% by mass or less.
  • the structure of the outer layer and the inner layer is not particularly limited, but may be the same composition as the intermediate layer or a composition different from the intermediate layer.
  • the composition of the outer layer and the inner layer may be the same composition or different compositions.
  • the proportion of the polyethylene-based resin in the outer layer is preferably 80% by mass or more, more preferably 95% by mass with respect to the outer layer, from the viewpoint of improving the visibility of the contents when the multilayer sheet is molded into a container. That's it.
  • the upper limit of the ratio of the polyethylene-type resin contained in an outer layer is not specifically limited, Preferably it is 100 mass% or less with respect to an outer layer.
  • the proportion of the polyethylene-based resin in the inner layer is preferably 80% by mass or more, more preferably 95% by mass with respect to the inner layer, from the viewpoint of improving the visibility of the contents when the multilayer sheet is formed into a container. That's it.
  • the upper limit of the ratio of the polyethylene-type resin contained in an inner layer is not specifically limited, Preferably it is 100 mass% or less with respect to an inner layer.
  • the outer layer and the inner layer may contain a cyclic olefin resin.
  • the composition ratio of the thicknesses of the outer layer, the intermediate layer, and the inner layer is not particularly limited. From the viewpoint of easily achieving the effects of the present invention, it is preferable to adjust the thickness of the intermediate layer and / or the thickness of the inner layer to be larger than the thickness of the outer layer. From the viewpoint that the rigidity of the sealant layer can be increased, the thickness of the intermediate layer may be adjusted to be larger than the thickness of the inner layer and / or the thickness of the outer layer. From the viewpoint that the seal strength of the sealant layer can be increased, the thickness of the inner layer may be adjusted to be larger than the thickness of the outer layer and / or the thickness of the intermediate layer.
  • the thickness of each layer is specified by observing the cross section of the sealant layer with a scanning electron microscope.
  • the total thickness of the intermediate layer and the inner layer in the sealant layer is adjusted to be larger than the thickness of the outer layer (that is, the thickness of the outer layer is adjusted to be smaller than the total thickness of the other layers), It is easy to improve the easy tear performance.
  • the total thickness of the intermediate layer and the inner layer is preferably 1 or more times, more preferably 2 or more times the thickness of the outer layer. Further, the total value of the thicknesses of the intermediate layer and the inner layer is preferably 15 times or less of the thickness of the outer layer, and is preferably 10 times or less from the viewpoint of easily increasing the productivity of the sealant layer having excellent thickness accuracy. It is more preferable.
  • the method for producing the sealant layer is not particularly limited, and for example, it can be produced by a conventionally known film forming method.
  • the sealant layer When the sealant layer is prepared as a multilayer coextruded film, it may be unstretched or stretched, and can be prepared by a T-die method, a T-die multilayer coextrusion method, an inflation method, or the like.
  • the thickness of the sealant layer is not particularly limited, but can be adjusted to, for example, 20 ⁇ m or more and 200 ⁇ m or less.
  • the cyclic olefin resin in the present invention is not particularly limited as long as it is a polymer or copolymer containing a structural unit derived from a cyclic olefin in the main chain.
  • a polymer or copolymer containing a structural unit derived from a cyclic olefin in the main chain For example, an addition polymer of a cyclic olefin or a hydrogenated product thereof, an addition copolymer of a cyclic olefin and an ⁇ -olefin, or a hydrogenated product thereof can be used.
  • a cyclic olefin resin may be used individually by 1 type, and may be used in combination of 2 or more type.
  • examples of the cyclic olefin-based resin include those obtained by grafting and / or copolymerizing an unsaturated compound having a polar group in the polymer or the copolymer containing a structural unit derived from a cyclic olefin in the main chain. It is done.
  • Examples of the polar group include a carboxyl group, an acid anhydride group, an epoxy group, an amide group, an ester group, and a hydroxyl group.
  • Examples of the unsaturated compound having a polar group include (meth) acrylic acid and maleic acid. Acid, maleic anhydride, itaconic anhydride, glycidyl (meth) acrylate, alkyl (meth) acrylate (carbon number 1-10) ester, alkyl maleate (carbon number 1-10) ester, (meth) acrylamide, (meta And 2-hydroxyethyl acrylate.
  • cyclic olefin-based resins examples include TOPAS (registered trademark) (manufactured by TOPAS Advanced Polymers), Apel (registered trademark) (manufactured by Mitsui Chemicals), Zeonex (registered trademark) (manufactured by Nippon Zeon), Examples include ZEONOR (registered trademark) (manufactured by ZEON Corporation), ARTON (registered trademark) (manufactured by JSR Corporation), and the like.
  • TOPAS registered trademark
  • Apel registered trademark
  • Zeonex registered trademark
  • ZEONOR registered trademark
  • ARTON registered trademark
  • Particularly preferred examples of the addition copolymer of cyclic olefin and ⁇ -olefin include [1] a structural unit derived from an ⁇ -olefin having 2 to 20 carbon atoms, and [2] represented by the following general formula (I). And a copolymer containing a structural unit derived from a cyclic olefin.
  • R 1 to R 12 may be the same or different and are each selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group; R 9 and R 10 , R 11 and R 12 may be integrated to form a divalent hydrocarbon group, R 9 or R 10 and R 11 or R 12 may form a ring with each other.
  • N represents 0 or a positive integer; When n is 2 or more, R 5 to R 8 may be the same or different in each repeating unit.
  • ⁇ -olefin having 2 to 20 carbon atoms The ⁇ -olefin having 2 to 20 carbon atoms is not particularly limited. For example, the same ones as in JP2007-302722 can be mentioned. These ⁇ -olefins may be used singly or in combination of two or more. Of these, ethylene is most preferably used alone.
  • R 1 to R 12 in the general formula (I) may be the same or different and are selected from the group consisting of a hydrogen atom, a halogen atom, and a hydrocarbon group.
  • Specific examples of the cyclic olefin represented by the general formula (I) include those similar to those described in JP-A-2007-302722.
  • cyclic olefins may be used singly or in combination of two or more.
  • the polymerization method of the ⁇ -olefin having 2 to 20 carbon atoms and the cyclic olefin represented by [2] general formula (I) and the hydrogenation method of the obtained polymer are not particularly limited. Can be carried out according to a known method.
  • the polymerization catalyst used is not particularly limited, and a cyclic olefin resin can be obtained by a known method using a conventionally known catalyst such as a Ziegler-Natta, metathesis, or metallocene catalyst.
  • the glass transition point of the cyclic olefin resin is preferably 30 ° C. or higher and 140 ° C. or lower. If the glass transition point of cyclic olefin resin is 30 degreeC or more, it is preferable at the point which can prevent the blocking of the pellets at the time of shaping
  • the glass transition point of the cyclic olefin resin can be adjusted by adjusting the content of the cyclic olefin skeleton of the main chain. As the glass transition point, a value measured by a DSC method (method described in JIS K7121) under a temperature rising rate of 10 ° C./min is employed.
  • Polyethylene resin As a polyethylene-type resin in this invention, what is normally used for a film can be used. Examples thereof include linear low density polyethylene (LLDPE), high pressure low density polyethylene (LDPE) and high density polyethylene (HDPE), ethylene vinyl acetate copolymer (EVA), ethylene ionomer, and polyethylene elastomer. Said resin may be used individually by 1 type, and may be used in combination of 2 or more type. When the above resins are used in combination, the ratio can be appropriately adjusted according to the processability of the film to be obtained.
  • LLDPE linear low density polyethylene
  • LDPE high pressure low density polyethylene
  • HDPE high density polyethylene
  • EVA ethylene vinyl acetate copolymer
  • ethylene ionomer ethylene ionomer
  • polyethylene elastomer polyethylene elastomer
  • LLDPE is preferable in terms of excellent molding stability such as ease of processing.
  • components usually used as components of the film may be appropriately blended within a range not impairing the object of the present invention.
  • Such components include resins other than cyclic olefin resins and polyethylene resins (polyester resins, etc.), slip agents, antioxidants, secondary antioxidants, colorants, neutralizers, dispersants, light stability Agents, ultraviolet absorbers, lubricants, antistatic agents, antifogging agents, nucleating agents, pigments, colorants, flame retardants, antiblocking agents, and other various organic and inorganic compounds.
  • the blending amount of these components is appropriately adjusted according to the effect to be obtained.
  • the birefringence of the stretched polyester resin layer in the present invention is 0.010 or more at a wavelength of 520 nm.
  • Birefringence is the ratio of (A) to (B), where (A) is the retardation of the stretched polyester resin layer and (B) is the thickness of the stretched polyester resin layer. ) / (B) ".
  • the birefringence of the stretched polyester resin layer is a value representing the phase difference in the plane of the stretched polyester resin layer, and is specified by a birefringence measuring device.
  • the thickness of the stretched polyester resin layer is specified by cross-sectional observation using a contact-type or non-contact-type film thickness meter or a scanning electron microscope.
  • the birefringence of the stretched polyester resin layer is preferably 0.015 or more at a wavelength of 520 nm.
  • the upper limit of the birefringence of the stretched polyester resin layer is not particularly limited, it is preferably 0.050 or less, more preferably 0.030 or less at a wavelength of 520 nm.
  • the birefringence of the stretched polyester resin layer can be adjusted to a desired value by adjusting the stretch ratio at the time of stretching the sheet formed from the polyester. For example, if the draw ratio at the time of drawing is low, the birefringence is low, and if the draw ratio is high, the birefringence is high.
  • polyester resin constituting the stretched polyester resin layer a resin usually used for a film can be used.
  • examples include aromatic polyesters (polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, polyethylene-2,6-naphthalenedicarboxylate, etc.), aliphatic polyesters (polylactic acid, etc.), and the like.
  • Said resin may be used individually by 1 type, and may be used in combination of 2 or more type.
  • components usually used as film components may be appropriately blended within a range not impairing the object of the present invention.
  • Such components include resins other than polyester resins (polyimides, etc.), slip agents, antioxidants, secondary antioxidants, colorants, neutralizers, dispersants, light stabilizers, UV absorbers, lubricants. , Antistatic agents, antifogging agents, nucleating agents, pigments, colorants, flame retardants, antiblocking agents, and other various organic / inorganic compounds. The blending amount of these components is appropriately adjusted according to the effect to be obtained.
  • the stretched polyester resin layer is obtained by stretching a sheet molded from a resin composition containing the polyester resin and other components.
  • the method for producing the stretched polyester resin layer is not particularly limited.
  • the sheet can be formed by a melt extrusion film forming method, a calender film forming method, a solution cast (casting) film forming method, or the like.
  • the method for stretching the obtained sheet is not particularly limited, and examples thereof include longitudinal uniaxial stretching, lateral uniaxial stretching, simultaneous biaxial stretching, and sequential biaxial stretching. Among these, it is preferable to employ sequential biaxial stretching from the viewpoint of easily improving the productivity of the stretched polyester resin layer.
  • the thickness of the stretched polyester resin layer is not particularly limited, but can be adjusted to, for example, 10 ⁇ m or more and 25 ⁇ m or less.
  • the manufacturing method of a multilayer film is not specifically limited, The method which can form a sheet laminated body is applicable.
  • a method of laminating a sealant layer and a stretched polyester resin layer by a hot lamination method, a dry lamination method, or the like can be suitably applied.
  • the total thickness of the multilayer film of the present invention (that is, the total thickness of the sealant layer and the stretched polyester resin layer) is not particularly limited.
  • the total thickness of the film of the present invention can be adjusted to, for example, 30 ⁇ m to 230 ⁇ m.
  • a container (packaging bag, pouch, etc.) and the like can be manufactured by preparing two multilayer films obtained and stacking them so that the sealant layers of the multilayer films face each other and heat-sealing.
  • the container obtained from the multilayer film of the present invention can be suitably used in the medical field, food field and the like.
  • the multilayer film of the present invention has both easy tearability and mechanical strength.
  • the easy tearability of the multilayer film can be evaluated by measuring the tear strength and the linearity when the multilayer film is torn by the method described in the examples.
  • the mechanical strength of the multilayer film can be evaluated by measuring the piercing strength or carrying out a bag drop test that can measure the impact resistance at the time of dropping by the method described in the examples.
  • ⁇ Preparation of sealant layer> Using a three-layer inflation molding machine (manufactured by Tommy Machine Industry Co., Ltd.), based on the composition of Table 1, a three-layer multilayer coextruded film having an intermediate layer, an outer layer and an inner layer sandwiching the intermediate layer (total layer thickness: 50 ⁇ m) was prepared.
  • the obtained multilayer coextruded film corresponds to the “sealant layer” in the present invention.
  • the numbers in parentheses indicate the ratio of resin in each layer, and the unit is “mass%”.
  • the ratio of the thickness of each layer constituting the multilayer coextruded film is shown in “layer ratio” in the table (the numerical value indicates “thickness of outer layer / thickness of intermediate layer / thickness of inner layer”).
  • LLDPE Linear Low Density Polyethylene
  • LLDPE-2 Product Name “Novatech UF230”, manufactured by Nippon Polyethylene Corporation
  • COC Cyclic Olefin Resin
  • phase difference was determined at a wavelength of 520 nm by a two-dimensional birefringence evaluation system “PA-100” manufactured by Photonic Lattice.
  • the “thickness” was determined by a constant pressure thickness measuring instrument “PG-02” manufactured by Teclock Co., Ltd.
  • “Birefringence” is a value obtained by dividing “phase difference” by “thickness”.
  • Corona treatment is applied to the outer side of the stretched polyester resin layer and the sealant layer, and a dry laminate adhesive (trade name “TM-595” manufactured by Toyo Morton Co., Ltd.) is applied to the corona treatment side of the stretched polyester resin layer.
  • a solution prepared by mixing a curing agent for dry lamination (trade name “CAT-RT37” manufactured by Toyo Morton Co., Ltd.) and ethyl acetate in a mass ratio of 15: 1.05: 12.6 (coating amount: about 2 g / m) 2 ), and ethyl acetate was volatilized in a dryer at 80 ° C.
  • the multilayer film was subjected to an Elmendorf tear test according to JIS K7128-2, and the tear strength of each multilayer film was measured.
  • “longitudinal” indicates strength when the multilayer film is torn in the longitudinal direction (MD direction).
  • “Lateral” indicates strength when the multilayer film is torn in the lateral direction (TD direction). It shows that easy tear property is excellent, so that these values are low.
  • the multilayer film was subjected to an Elmendorf tear test in accordance with JIS K7128-2, and when the tear strength of each multilayer film was measured, the distance between the tear end point and the center line of the multilayer film was measured.
  • “longitudinal” indicates the distance from the end point of tearing and the center of the multilayer film when the multilayer film is torn in the longitudinal direction (MD direction).
  • “Lateral” indicates the distance from the end point of tearing and the center of the multilayer film when the multilayer film is torn in the lateral direction (TD direction). If the value of “vertical” or “horizontal” is zero (0), it indicates that the linearity is excellent.
  • the piercing strength of the multilayer film was measured with Tensilon RTM-100 manufactured by Orientec Co., Ltd. under a piercing speed of 50 mm / min using a needle having a diameter of 1 mm and a tip shape radius of 0.5 mm in accordance with JIS Z1707. The higher the value obtained, the higher the puncture strength.
  • the multilayer films of the present invention are excellent in mechanical strength and easy to tear in the vertical direction and / or the horizontal direction.
  • the multilayer films of Examples 2, 4, and 6 had a good balance between mechanical strength and easy tearability.
  • the thickness of the outer layer in the sealant layer was thinner than the thickness of each of the other layers, and it was easy to increase the easy tear performance provided by the intermediate layer.
  • a multilayer film that does not satisfy the constitution of the present invention was inferior in mechanical strength and easy tearability, or both.
  • the proportion of the cyclic olefin-based resin in the sealant layer was less than 30% by mass, the easy tearability (particularly linearity) tended to be inferior.
  • the birefringence of the stretched polyester resin layer is less than 0.01, the mechanical strength tends to be inferior.

Abstract

La présente invention vise à fournir un film pouvant former un matériau de récipient qui est à la fois facile à déchirer et mécaniquement résistant. A cet effet, la présente invention porte sur un film multicouche, qui comprend au moins une couche d'agent d'étanchéité et une couche de résine à base de polyester étirée, la couche d'étanchéité ayant au moins une couche contenant une résine qui contient une résine à base d'oléfine cyclique et une résine à base de polyéthylène, la couche contenant une résine contenant la résine à base d'oléfine cyclique sous 30 % en masse ou plus par rapport à la couche contenant une résine, et la biréfringence de la couche de résine à base de polyester étirée étant de 0,010 ou plus à une longueur d'onde de 520 nm.
PCT/JP2016/072276 2015-10-06 2016-07-29 Film multicouche et son procédé de fabrication WO2017061164A1 (fr)

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JP2015198867A JP6189906B2 (ja) 2015-10-06 2015-10-06 多層フィルム及び該多層フィルムの製造方法
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Families Citing this family (2)

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JP2019099232A (ja) * 2017-12-04 2019-06-24 凸版印刷株式会社 包装体及びその製造方法
JP7316819B2 (ja) * 2019-03-28 2023-07-28 出光ユニテック株式会社 包装材料および包装体

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664839A (en) * 1979-11-02 1981-06-02 Toyobo Co Ltd Manufacture of multilayered container
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
JP2001219464A (ja) * 1999-12-03 2001-08-14 Toray Ind Inc 容器用ポリエステルフィルム
JP2010006934A (ja) * 2008-06-26 2010-01-14 Toyobo Co Ltd 易引裂き性ポリエステルフィルム
JP2012224071A (ja) * 2011-04-06 2012-11-15 Dic Corp 多層フィルム及び該フィルムからなる包装材
JP2013075439A (ja) * 2011-09-30 2013-04-25 Dic Corp 易引裂き性多層フィルム、その製造方法及び該フィルムを用いた包装材
JP2015512055A (ja) * 2012-01-03 2015-04-23 スリーエム イノベイティブ プロパティズ カンパニー 選択される空間において複屈折性が低減された、有効媒質位相差フィルム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003072003A (ja) * 2001-09-06 2003-03-12 Toyobo Co Ltd 積層ポリオレフィンフィルム及び積層包装材料
JP6241113B2 (ja) * 2013-07-31 2017-12-06 大日本印刷株式会社 包装材料
JP6375974B2 (ja) * 2014-02-05 2018-08-22 日本ポリエチレン株式会社 易引裂性多層シーラントフィルム及び包装材

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5664839A (en) * 1979-11-02 1981-06-02 Toyobo Co Ltd Manufacture of multilayered container
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
JP2001219464A (ja) * 1999-12-03 2001-08-14 Toray Ind Inc 容器用ポリエステルフィルム
JP2010006934A (ja) * 2008-06-26 2010-01-14 Toyobo Co Ltd 易引裂き性ポリエステルフィルム
JP2012224071A (ja) * 2011-04-06 2012-11-15 Dic Corp 多層フィルム及び該フィルムからなる包装材
JP2013075439A (ja) * 2011-09-30 2013-04-25 Dic Corp 易引裂き性多層フィルム、その製造方法及び該フィルムを用いた包装材
JP2015512055A (ja) * 2012-01-03 2015-04-23 スリーエム イノベイティブ プロパティズ カンパニー 選択される空間において複屈折性が低減された、有効媒質位相差フィルム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SABURO OKAJIMA ET AL.: "Sen'iso Himaku no Kussetsuritsu no Kenkyu (1st to 3rd reports", THE JOURNAL OF CHEMICAL INDUSTRY, vol. 42, no. 11, 1939, pages 810 - 819 *

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