[go: up one dir, main page]

WO2025126020A1 - Film d'étanchéité et film stratifié - Google Patents

Film d'étanchéité et film stratifié Download PDF

Info

Publication number
WO2025126020A1
WO2025126020A1 PCT/IB2024/062405 IB2024062405W WO2025126020A1 WO 2025126020 A1 WO2025126020 A1 WO 2025126020A1 IB 2024062405 W IB2024062405 W IB 2024062405W WO 2025126020 A1 WO2025126020 A1 WO 2025126020A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealant film
film
resin
sealant
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/IB2024/062405
Other languages
English (en)
Japanese (ja)
Inventor
桑原弘嗣
武田友和
帯金未来
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zacros
Zacros Corp
Original Assignee
Zacros
Zacros Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zacros, Zacros Corp filed Critical Zacros
Publication of WO2025126020A1 publication Critical patent/WO2025126020A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B32B27/32—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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Definitions

  • the present invention relates to a sealant film and a laminated film.
  • Patent Document 1 describes a manufacturing method in which a synthetic resin containing aluminum foil pieces is fed into an extruder, the aluminum foil is crushed and kneaded to form pellets, and the pellets are then removed from cooling water and dehydrated and dried to a moisture content of 0.1% or less.
  • Patent Document 2 describes a laminated film in which a recycled polyethylene layer is laminated with a linear low-density polyethylene layer.
  • Paragraph 0036 of Patent Document 1 describes the production of various molded products such as blocks, bricks, stakes, fences, boards, sheets, injection molded products, and multi-layer containers from the recycled pellets, but makes no mention of their use as sealant films for packaging bags and the like.
  • Paragraph 0044 of Patent Document 2 describes using a linear low-density polyethylene layer that does not contain recycled polyethylene as the innermost layer, and paragraph 0086 describes producing a synthetic resin product such as a package using a laminate film having a recycled polyethylene layer, but does not describe using it as a sealant film for packaging bags, etc.
  • Sealant films are laminated with other resin films, such as base films, to produce packaging bags, but before laminating with other resin films, the sealant film is handled as a single film. For this reason, further improvements are needed to use laminated films with recycled polyethylene layers as sealant films. When horizontally recycling from one packaging bag to another, it is difficult to remove impurities such as adhesives, inks, and additives, and improvements are needed to ensure that the film is strong enough to be used as a sealant film even if these are mixed in.
  • the present invention was made in consideration of the above circumstances, and aims to provide a sealant film that contains recycled materials yet is easy to handle, as well as a laminate film that contains the sealant film.
  • one aspect of the present invention includes the following aspects.
  • the first aspect is a sealant film containing recycled material, which uses as a raw material a laminate in which multiple resin layers consisting of only polyethylene resin films are laminated via adhesive layers, and the sealant film has a multi-layer structure of at least two layers, and at least one end surface in the thickness direction has a virgin resin layer that does not contain the recycled material.
  • the second aspect is the first aspect, in which the sealant film has a virgin resin layer that does not contain the recycled material on both end surfaces in the thickness direction.
  • the density of the virgin resin contained in the sealant film is 0.910 g/cm 3 or more and 0.930 g/cm 3 or less.
  • the fourth aspect is any one of the first to third aspects, in which the content ratio of the recycled material to the total weight of the sealant film is 50% by weight or less.
  • the fifth aspect is any one of the first to fourth aspects, in which the recycled material contains high-density polyethylene.
  • the sixth aspect is any one of the first to fifth aspects, in which the recycled material contains a printing ink component or a urethane adhesive.
  • the seventh aspect is any one of the first to sixth aspects, in which the total light transmittance of the sealant film is 65 to 90%.
  • the eighth aspect is a laminated film in which a base film is laminated to the sealant film of any one of the first to seventh aspects.
  • the present invention makes it possible to provide a sealant film and a laminate film that contain recycled materials and are easy to handle.
  • FIG. 2 is a cross-sectional view showing an example of the sealant film of the present embodiment.
  • FIG. 2 is a cross-sectional view showing an example of a laminate that is a raw material for recycled materials.
  • FIG. 2 is a cross-sectional view showing an example of a laminate film including the sealant film of the present embodiment.
  • the sealant film 10 of this embodiment has a multilayer structure of at least two layers.
  • Methods for producing the multilayer structure include multilayer inflation molding, multilayer T-die molding, dry lamination, extrusion lamination, etc.
  • the multilayer structure in the illustrated example includes terminal layers 11, 13 facing both end faces in the thickness direction, and an intermediate layer 12 laminated between the terminal layers 11, 13.
  • the multilayer structure of at least two layers may be a two-layer multilayer structure consisting of terminal layers 11, 13, or may be a three-layer or more multilayer structure including one or more intermediate layers 12.
  • the sealant film 10 contains recycled material made from polyethylene resin film, except for the end layers 11 and 13 on at least one side.
  • the recycled material is manufactured, for example, by using a laminate 20 as a raw material, in which multiple resin layers 21, 22, 23 made only of polyethylene resin film are laminated via adhesive layers 24, 25, as shown in FIG. 2.
  • the number of resin layers 21, 22, 23 is not particularly limited, and may be two layers or four layers or more, not limited to three layers as shown in the illustrated example.
  • At least one of the end layers 11, 13 is a virgin resin layer that does not contain the recycled material.
  • at least one of the end surfaces 14, 15 is formed from a virgin resin layer, which facilitates sanitary management of the surface that comes into contact with the contents, and also improves the sealing performance when heat-welding the sealant films 10 together. It is preferable that both end layers 11, 13 are virgin resin layers and that both end surfaces 14, 15 do not contain recycled material.
  • polyethylene-based resins examples include linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), medium-density polyethylene (MDPE), and high-density polyethylene (HDPE).
  • LLDPE linear low-density polyethylene
  • LDPE low-density polyethylene
  • MDPE medium-density polyethylene
  • HDPE high-density polyethylene
  • Polyethylene-based resins may be either homopolymers of ethylene or copolymers mainly composed of ethylene.
  • Monomers (comonomers) other than ethylene include one or more of ⁇ -olefins such as 1-butene, 1-hexene, and 1-octene, cyclic olefins such as norbornene, and vinyl monomers such as vinyl acetate, vinyl chloride, and acrylic acid.
  • ⁇ -olefins such as 1-butene, 1-hexene, and 1-octene
  • cyclic olefins such as norbornene
  • vinyl monomers such as vinyl acetate, vinyl chloride, and acrylic acid.
  • the proportion of ethylene in the constituent monomers of polyethylene resins is preferably 50% by weight or more, and may be, for example, 80 to 100% by weight.
  • Ethylene or comonomers may be compounds derived from fossil resources such as petroleum, compounds derived from biomass such as plants, or compounds obtained by chemical recycling. Chemical recycling refers to the process of producing compounds such as monomers by chemical processing of the raw materials of recycled materials.
  • the resin contained in the polyethylene-based resin layer may be only a polyethylene-based resin, or may contain other resins.
  • the polyethylene-based resin layer is preferably composed of 80% by weight or more, 90% by weight or more, or 95% by weight or more of a polyethylene-based resin.
  • Each polyethylene-based resin layer may be composed of one type of polyethylene-based resin, or two or more types of polyethylene-based resin.
  • the polyethylene resin may contain additives other than the resin.
  • the additives are not particularly limited, but examples thereof include antioxidants, lubricants, antiblocking agents, flame retardants, UV absorbers, light stabilizers, antistatic agents, colorants, crosslinking agents, etc.
  • the additives may be components that are compatible with the resin, or components that are not compatible with the resin.
  • the virgin resin layer is a polyethylene-based resin layer made of virgin polyethylene-based resin.
  • Virgin polyethylene-based resin refers to resin that is used in products only after it has been industrially produced by polymerization of monomers, and in the following explanation, it may be simply referred to as "virgin resin.”
  • Virgin resin can contain monomers obtained by chemical recycling as described above.
  • Virgin resin can be easily controlled in terms of composition, degree of polymerization, density, melting point, etc., so that it has the desired physical properties. For this reason, virgin resin can be used stably, but compared to recycled materials, the process of monomer production, polymerization, etc. places a greater burden on the environment.
  • the resin layers 21, 22, and 23 are polyethylene-based resin layers made of polyethylene-based resin.
  • the polyethylene-based resin of the recycled material refers to a resin that is produced industrially by polymerization from monomers, and then recovered after being used in a product or without being used in a product, and reused through processing such as crushing and dissolving without being returned to monomer. In the following explanation, it may be simply referred to as "recycled material.”
  • Products using polyethylene resins include films, sheets, packaging bags, molded products, etc. Scraps of films and sheets, used packaging films, packaging bags, etc. are used as raw materials for recycled materials. Only a laminate in which multiple resin layers made of only polyethylene resin films are laminated via adhesive layers may be used as raw materials for recycled materials, or other raw materials may be used in part. Examples of the proportion of other raw materials include 20% by weight or less, 10% by weight or less, etc.
  • Recycled materials are subject to heat history during product processing before recycling, and are also subject to heat history again during collection, crushing, dissolution, product processing after recycling, and other processes.
  • recycled materials are subjected to mechanical, optical, chemical, and other stresses during their history before and after recycling. For this reason, recycled materials may have inferior performance to virgin resins, even when they are processed from raw materials with relatively uniform properties, such as scraps and unused waste materials.
  • recycled materials may be processed in a state where various raw materials are mixed together during recycling.
  • polyethylene resins with different compositions, degrees of polymerization, densities, melting points, etc. may not be sufficiently separated, and/or foreign matter such as additives, impurities, and deposits may not be sufficiently removed before processing. This may make it difficult to obtain stable performance, or foreign matter may affect the performance of the resin.
  • the raw material polyethylene resin film may contain a laminate containing relatively low density resins such as LDPE and LLDPE, and relatively high density resins such as HDPE and MDPE.
  • the density of the virgin resin contained in the sealant film 10 is preferably 0.910 g/cm 3 or more and 0.930 g/cm 3 or less. This can improve the processability of the recycled material. If the density of the virgin resin is too low, blocking may occur easily.
  • a resin with a relatively low density such as LDPE or LLDPE is preferable.
  • the content ratio of recycled material to the total weight of the sealant film 10 is preferably 50% by weight or less.
  • virgin resin which has physical properties suitable for a sealant
  • recycled material whose quality is difficult to adjust, it is possible to reduce the environmental burden while ensuring quality.
  • the content ratio of recycled material may have an upper or lower limit of at least one selected from 50% by weight, 40% by weight, 30% by weight, 20% by weight, 10% by weight, and 5% by weight.
  • the sealant film 10 From the viewpoint of quality control of the sealant film 10, it is preferable to use recycled materials with physical properties suitable for sealants, such as LDPE and LLDPE.
  • the raw materials for the recycled materials are limited to scraps of sealant materials, and it may be difficult to secure the required quantity. For this reason, it is preferable that the recycled material contains HDPE.
  • HDPE is suitable as a base film for polyethylene-based resin films, so a composite film containing a base film and a sealant film can be used as the raw material laminate 20.
  • the recycled material contains a printing ink component or a urethane adhesive.
  • the recycled material containing the printing ink component may be a material having a lower total light transmittance than virgin resin.
  • the total light transmittance of the sealant film 10 may be 90% or less.
  • the total light transmittance can be relatively high by having a virgin resin layer that does not contain recycled material.
  • the total light transmittance of the sealant film 10 may be 65% or more.
  • a sealant film containing recycled material has excellent light blocking and concealing properties due to its lower total light transmittance compared to a sealant film made only of virgin resin.
  • the printing ink components are useful for ensuring a display surface and improving design when commercializing polyethylene resin films, and the urethane adhesive is useful for bonding between the resin layers 21, 22, and 23. Therefore, a composite film including a printing layer (not shown) and adhesive layers 24 and 25 can be used as the raw material laminate 20.
  • the sealant film 10 can be laminated with a base film 17 to produce a laminate film 16. Since the sealant film 10 accounts for a large proportion of the laminate film 16, increasing the recycling rate of the sealant film 10 is advantageous for increasing the recycling rate of the laminate film 16.
  • the base film 17 is not particularly limited, but examples thereof include polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and polyamide resins such as nylon (Ny).
  • the base film 17 may be one layer or two or more layers.
  • the laminated film 16 may have at least one selected from a printed layer, an adhesive layer, a barrier resin layer such as ethylene-vinyl alcohol copolymer (EVOH), a metal vapor deposition layer such as aluminum, a metal foil such as aluminum foil, an inorganic vapor deposition layer such as silica or alumina, an extruded resin layer such as PE, etc.
  • a barrier resin layer such as ethylene-vinyl alcohol copolymer (EVOH)
  • a metal vapor deposition layer such as aluminum
  • a metal foil such as aluminum foil
  • an inorganic vapor deposition layer such as silica or alumina
  • an extruded resin layer such as PE, etc.
  • the sealant film 10 and the base film 17 may be bonded together with a urethane adhesive.
  • the laminated film 16 may be used to manufacture packaging containers such as packaging bags.
  • packaging bags include three-sided sealed bags, four-sided sealed bags, pillow bags, gusset bags, standing pouches, etc.
  • the dimensions of the packaging bag are not particularly limited, but for example, in the case of use as a refill container, it is preferable that the vertical height is about 100 to 500 mm, the horizontal width is about 70 to 300 mm, and the filling volume is about 100 cm3 to 5000 cm3 .
  • the packaging bag can be filled with a desired content and then sealed to obtain the desired packaged product (packaging bag containing the content).
  • the state of the content is not particularly limited, but may be fluids such as liquids, powders, or particles, or solids such as articles.
  • the type of content is not particularly limited, but may be detergents, medicines, cosmetics, pharmaceuticals, beverages, seasonings, inks, paints, fuels, etc.
  • the layer ratio is a relative weight ratio determined according to the product of the thickness and density of each layer.
  • the recycling rate is the weight ratio (wt%) of the recycled material used in each layer.
  • "R" in the layer structure represents a layer with a recycling rate greater than 0 wt%
  • V represents a virgin resin layer with a recycling rate of 0 wt%.
  • the recycled material used was a laminate consisting of an HDPE layer and an LLDPE layer laminated with a printing ink layer and a urethane adhesive layer in between, and polyethylene resin obtained by repelletization.
  • the virgin resin used was C6LLDPE, which is copolymerized with a comonomer having 6 carbon atoms.
  • the density of the virgin resin is shown in Table 1.
  • the evaluation results of the sealant film are shown in Table 2.
  • the evaluation method was as follows.
  • the recycling rate of the entire sealant film was calculated by the following formula using the layer ratio of each layer of the sealant film (A outer , A middle , A inner ) and the recycling rate (B outer , B middle , B inner ).
  • “Overall recycling rate” (A outside B outside + A inside B inside + A inside B inside ) / (A outside + A inside + A inside )
  • the processability was evaluated with respect to film-forming property and blocking according to the following criteria.
  • the film-forming property was rated as " ⁇ ” when the bubbles were stable, “ ⁇ ” when the bubbles were stable with some disturbance, and “ ⁇ ” when the bubbles were unstable.
  • the blocking was rated as " ⁇ ” when there was no sticking to the inner surface of the tube, “ ⁇ ” when there was some sticking to the inner surface of the tube but it was easy to peel off, and " ⁇ " when there was sticking to the inner surface of the tube and it could not be easily peeled off.
  • the Gelbo Flex test was performed by measuring the number of pinholes that occurred after bending the sealant film 500 or 1000 times using a BE-1005 Gelbo Flex Tester manufactured by Tester Sangyo Co., Ltd. In Table 2, "-" indicates that no measurement was performed.
  • Total light transmittance The total light transmittance was measured in accordance with JIS K7361 using NDH4000 manufactured by Nippon Denshoku Industries Co., Ltd.

Landscapes

  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film d'étanchéité et un film stratifié présentant une excellente facilité de manipulation tout en contenant également un matériau recyclé. Plus spécifiquement, la présente invention concerne : un film d'étanchéité (10) contenant un matériau recyclé à l'aide d'un stratifié en tant que matière première, dans lequel une pluralité de couches de résine constituées uniquement d'un film de résine de polyéthylène sont stratifiées par l'intermédiaire d'une couche adhésive, le film d'étanchéité (10) ayant une structure multicouche d'au moins deux couches, et le film d'étanchéité (10) ayant une couche de résine vierge sans le matériau recyclé sur au moins l'une des faces d'extrémité (14, 15) dans la direction de l'épaisseur ; et un film stratifié (16) dans lequel un film de matériau de base (17) est stratifié sur le film d'étanchéité (10).
PCT/IB2024/062405 2023-12-12 2024-12-10 Film d'étanchéité et film stratifié Pending WO2025126020A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023209298A JP2025093567A (ja) 2023-12-12 2023-12-12 シーラントフィルムおよび積層フィルム
JP2023-209298 2023-12-12

Publications (1)

Publication Number Publication Date
WO2025126020A1 true WO2025126020A1 (fr) 2025-06-19

Family

ID=96056614

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2024/062405 Pending WO2025126020A1 (fr) 2023-12-12 2024-12-10 Film d'étanchéité et film stratifié

Country Status (2)

Country Link
JP (1) JP2025093567A (fr)
WO (1) WO2025126020A1 (fr)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH079643A (ja) * 1993-06-28 1995-01-13 Sumitomo Chem Co Ltd 包装用多層フィルム
JPH0852781A (ja) * 1994-04-28 1996-02-27 W R Grace & Co 架橋フィルム由来の再利用ポリマーを含む多層ポリオレフィンフィルム
JPH11501260A (ja) * 1994-10-13 1999-02-02 ザ、プロクター、エンド、ギャンブル、カンパニー パッケージの製造に適した多層材料
JP2001122985A (ja) * 1999-10-26 2001-05-08 Canon Inc 再生フィルムおよびその製造方法
JP2001225428A (ja) * 2000-02-15 2001-08-21 Japan Polyolefins Co Ltd 積層シートおよびその製造方法
WO2022124229A1 (fr) * 2020-12-11 2022-06-16 東洋製罐株式会社 Film d'étanchéité
US20220355565A1 (en) * 2020-01-30 2022-11-10 Uniqco-Ip Pty Ltd Packaging sheeting and a method of manufacturing packaging sheeting
WO2022238187A1 (fr) * 2021-05-14 2022-11-17 Unilever Ip Holdings B.V. Film multicouche
JP2022548903A (ja) * 2019-09-20 2022-11-22 ノヴァ ケミカルズ（アンテルナショナル）ソシエテ アノニム リサイクルされたポリエチレンを用いたスタンドアップパウチ
JP2022552096A (ja) * 2019-10-15 2022-12-15 ダウ グローバル テクノロジーズ エルエルシー ポストコンシューマー樹脂を用いる可撓性パウチ
WO2023028943A1 (fr) * 2021-09-02 2023-03-09 Borealis Ag Film d'étanchéité à base de polyéthylène à faible frottement contenant un polymère recyclé
JP2023040660A (ja) * 2021-09-10 2023-03-23 藤森工業株式会社 マテリアルリサイクルｐｅ含有フィルム及びそれを備えた包装体
JP2024068520A (ja) * 2022-11-08 2024-05-20 花王株式会社 パウチ容器
WO2024181007A1 (fr) * 2023-02-27 2024-09-06 東洋製罐株式会社 Film d'étanchéité
WO2024248005A1 (fr) * 2023-05-29 2024-12-05 Ｔｏｐｐａｎホールディングス株式会社 Film d'étanchéité, corps multicouche, matériau d'emballage et sac d'emballage

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH079643A (ja) * 1993-06-28 1995-01-13 Sumitomo Chem Co Ltd 包装用多層フィルム
JPH0852781A (ja) * 1994-04-28 1996-02-27 W R Grace & Co 架橋フィルム由来の再利用ポリマーを含む多層ポリオレフィンフィルム
JPH11501260A (ja) * 1994-10-13 1999-02-02 ザ、プロクター、エンド、ギャンブル、カンパニー パッケージの製造に適した多層材料
JP2001122985A (ja) * 1999-10-26 2001-05-08 Canon Inc 再生フィルムおよびその製造方法
JP2001225428A (ja) * 2000-02-15 2001-08-21 Japan Polyolefins Co Ltd 積層シートおよびその製造方法
JP2022548903A (ja) * 2019-09-20 2022-11-22 ノヴァ ケミカルズ（アンテルナショナル）ソシエテ アノニム リサイクルされたポリエチレンを用いたスタンドアップパウチ
JP2022552096A (ja) * 2019-10-15 2022-12-15 ダウ グローバル テクノロジーズ エルエルシー ポストコンシューマー樹脂を用いる可撓性パウチ
US20220355565A1 (en) * 2020-01-30 2022-11-10 Uniqco-Ip Pty Ltd Packaging sheeting and a method of manufacturing packaging sheeting
WO2022124229A1 (fr) * 2020-12-11 2022-06-16 東洋製罐株式会社 Film d'étanchéité
WO2022238187A1 (fr) * 2021-05-14 2022-11-17 Unilever Ip Holdings B.V. Film multicouche
WO2023028943A1 (fr) * 2021-09-02 2023-03-09 Borealis Ag Film d'étanchéité à base de polyéthylène à faible frottement contenant un polymère recyclé
JP2023040660A (ja) * 2021-09-10 2023-03-23 藤森工業株式会社 マテリアルリサイクルｐｅ含有フィルム及びそれを備えた包装体
JP2024068520A (ja) * 2022-11-08 2024-05-20 花王株式会社 パウチ容器
WO2024181007A1 (fr) * 2023-02-27 2024-09-06 東洋製罐株式会社 Film d'étanchéité
WO2024248005A1 (fr) * 2023-05-29 2024-12-05 Ｔｏｐｐａｎホールディングス株式会社 Film d'étanchéité, corps multicouche, matériau d'emballage et sac d'emballage

Also Published As

Publication number Publication date
JP2025093567A (ja) 2025-06-24

Similar Documents

Publication Publication Date Title
CN113661055B (zh) 用于热成型的可回收膜
AU603605B2 (en) Oxygen barrier laminates
JP2023062051A (ja) 包装材料用ポリエチレン積層体及び該積層体からなる包装材料
JP7743397B2 (ja) ポストコンシューマー樹脂を用いる可撓性パウチ
CN115023345A (zh) 层叠体、包装袋及其制造方法
JP2024164149A (ja) 樹脂フィルム、積層体および袋
CN114728509A (zh) 可回收包装材料及其制备方法
JP7375268B2 (ja) シーラントフィルム、包装材及び包装体
WO2025126020A1 (fr) Film d'étanchéité et film stratifié
JP5682223B2 (ja) 液体用紙容器
WO2023008364A1 (fr) Film stratifié et sac d'emballage
JP7642105B2 (ja) 無延伸フィルム、積層体、および包装体
JP2025141137A (ja) シーラントフィルムおよび積層フィルム
JP7484363B2 (ja) 口栓付きスタンディングパウチ
JP7681255B2 (ja) スパウト及び容器
JP7770819B2 (ja) 積層フィルムおよび包装袋
CN109573296A (zh) 可循环再利用的单层pe高阻隔包装袋及其袋体采用薄膜的加工方法
JP7463749B2 (ja) 積層体およびそれを用いたスタンディングパウチ
WO2025202916A1 (fr) Film, film stratifié, sac d'emballage, granulé et film recyclé
JP2025141196A (ja) インク袋
JP2025018128A (ja) 共押出フィルム、積層フィルムおよび包装袋
JP7676899B2 (ja) 樹脂フィルム及び包装容器
JP2018202790A (ja) 積層体およびそれを備える包装袋
JP2023014611A (ja) 積層体及び包装袋
JP2023031400A (ja) 積層体、積層体の製造方法および包装体

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24903073

Country of ref document: EP

Kind code of ref document: A1