WO2017135375A1 - 再封性包装容器 - Google Patents
再封性包装容器 Download PDFInfo
- Publication number
- WO2017135375A1 WO2017135375A1 PCT/JP2017/003801 JP2017003801W WO2017135375A1 WO 2017135375 A1 WO2017135375 A1 WO 2017135375A1 JP 2017003801 W JP2017003801 W JP 2017003801W WO 2017135375 A1 WO2017135375 A1 WO 2017135375A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat seal
- layer
- seal layer
- packaging container
- intermediate layer
- Prior art date
Links
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
- B32B27/00—Layered products comprising a layer 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
- B32B27/06—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
- 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
- B32B7/027—Thermal properties
-
- 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
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- 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
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/246—All polymers belonging to those covered by groups B32B27/32 and B32B27/30
-
- 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
- B32B2307/72—Density
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
Definitions
- the present invention relates to a resealable packaging container, specifically, a packaging container having a reseal function, which is suitably used for packaging foods, pharmaceuticals and the like.
- a packaging container made of a flexible packaging material formed from a laminated film composed of one or more kinds of polymer film, paper, metal foil and the like.
- a resealable container that can be repeatedly opened and resealed every time it is used has attracted attention.
- By using such a packaging container it is possible to prevent the products stored in the packaging container from being deteriorated by oxidation, moisture absorption, or drying by resealing immediately after use, and to prolong the product life. is there.
- Patent Document 1 discloses an outer layer, an intermediate layer containing a hydrogenated product of a styrene-diene rubber block copolymer as a main component and a tackifier,
- a multilayer film comprising a sealing layer, which can be exposed in an adhesive state in which an intermediate layer can be resealed at a heat seal portion when the multilayer film is peeled off from a bottom material.
- this multilayer film contains a large amount of hydrogenated rubber block copolymer and essential tackifiers such as rosin resin, terpene resin and petroleum hydrocarbon resin as essential components in the intermediate layer.
- Patent Document 2 discloses that the base material layer (A), the intermediate layer (B), the release resin layer (C), and the adherend (D) are (A) / (B) / (C) / (D )
- the intermediate layer (B) is a layer composed mainly of a specific styrene-based thermoplastic elastomer
- the adherend (D) is to be sealed.
- a multilayer film that can be resealed after heat sealing at the heat sealing portion is disclosed.
- a styrenic thermoplastic elastomer is used as an essential component.
- the elution amount of n-heptane does not exceed 100 ° C. according to the standard value (Ministry of Health and Welfare Notification No. 370 (standard for food, additives, etc.)). In some cases, it may be 150 ⁇ g / mL or less, and in the case of exceeding 100 ° C., it may exceed 30 ⁇ g / mL), and its use may be limited. In other words, there is a need for a resealable container that matches the lifestyle and eating habits of heating food in a microwave oven or with steam while the food is in the container, or using an automatic dishwasher that uses hot water. is there. In addition, it is also shown in Patent Document 3 relating to an application by the present applicant that a styrenic thermoplastic elastomer such as SEBS may increase the amount of n-heptane extracted.
- SEBS styrenic thermoplastic elastomer
- the technical problem of the present invention is to provide a resealable packaging container having excellent openability / resealability and excellent food hygiene.
- the gist of the present invention is as follows. [1] A multilayer film including three layers in which the base material layer (A), the intermediate layer (B), and the heat seal layer (C) are laminated in the order of (A) / (B) / (C) was used.
- a resealable packaging body having a lid and a bottom material using a single layer or a multilayer sheet having an adherend (D) that can be bonded to the heat seal layer (C),
- the base material layer (A), the intermediate layer (B) and the heat seal layer (C) all comprise a polyolefin resin,
- the heat seal layer (C) and the adherend (D) are heat sealed to form a heat seal portion, and then the multilayer film is peeled from the heat seal portion, the intermediate layer (B) and the heat seal layer A resealable packaging container in which (C) is delaminated and both layers are exposed in a resealable state.
- the exposure of the intermediate layer (B) is caused by the heat seal layer in which the heat seal layer (C) is broken from the multilayer film, and the intermediate layer (B) and the heat seal layer (C) are exposed.
- the base layer (A) is composed of a propylene polymer (P1) having a melting point (Tm) measured by a differential scanning calorimeter (DSC) in the range of 120 to 170 ° C. [1] or [ 2] Resealable packaging container.
- the intermediate layer (B) comprises a propylene polymer (P2a) satisfying the following requirements (a-1) and (a-2): Resealable packaging container as described.
- A-1 The melting point (Tm) measured by a differential scanning calorimeter (DSC) is less than 120 ° C. or no melting point is observed.
- A-2) Melt flow rate (MFR) measured at 230 ° C. under a load of 2.16 kg is 0.1 to 500 g / 10 min.
- the resealable packaging container according to [1] or [2], wherein the adherend (D) to be sealed is made of polyethylene (E2) having a density of 890 to 960 kg / m 3. .
- the resealable packaging container of the present invention has little decrease in adhesive strength even after repeated opening and resealing, and does not use styrene-based thermoplastic elastomers that are concerned about food hygiene, or keeps the amount to a minimum even if used. In addition, since no petroleum resin or the like is added, it is excellent in hygiene even when used under heating.
- sheet is a thin product as defined in JIS, and generally its thickness is small and flat instead of length and width, while “film” is compared to length and width.
- a thin flat product having an extremely small thickness and an arbitrarily limited maximum thickness, usually supplied in the form of a roll (Japanese Industrial Standard JISK6900).
- the term “sheet” is included and the term “sheet” is used.
- film is included.
- the laminated film and the laminated sheet may be collectively referred to as “laminated body”.
- the “main component” is defined as a component whose composition in the composition is usually 51 to 100% by mass, preferably 60 to 100% by mass, more preferably 70 to 100% by mass.
- the base material layer (A), the intermediate layer (B) and the heat seal layer (C), both of which are made of a polyolefin polymer, are (A) / (B).
- a multilayer film laminated in the order of / (C) is used as a cover material, and a single-layer or multilayer sheet (sealed body) having an adherend (D) that can be bonded to the heat seal layer (C) is the bottom. It is a resealable package used for the material.
- each layer will be described in detail.
- the base material layer (A) is composed of a polyolefin resin, and preferably has a melting point (Tm) measured by a differential scanning calorimeter (DSC) in the range of 120 to 170 ° C., preferably 130 to 165 ° C. It consists of a propylene polymer (P1).
- the melting point (Tm) is a value measured by a reheating method as described later.
- the melt flow rate (MFR) (230 ° C., under 2.16 kg load) is 0.1 to 500 g / 10 minutes, preferably 0.1 to 100 g / 10 minutes. Meet.
- Such a propylene polymer (P1) may be a homopolypropylene, a propylene / ⁇ -olefin having 2 to 20 carbon atoms (excluding propylene) random copolymer, or a propylene block copolymer. However, it is preferably a homopolypropylene or a random copolymer of propylene and an ⁇ -olefin having 2 to 20 carbon atoms (excluding propylene).
- examples of the ⁇ -olefin having 2 to 20 carbon atoms other than propylene include ethylene, 1-butene, 1-pentene, 3-methyl-1-butene, 1-hexene, 4-methyl-1-pentene, Examples thereof include 1-octene and 1-decene.
- the propylene polymer (P1) is a propylene / ⁇ -olefin random copolymer
- the structural unit derived from ⁇ -olefin is usually 0.1 to 8 mol%, preferably 0.2 to 7.5 mol. %, More preferably 0.3 to 7 mol%.
- the three-dimensional structure of the propylene polymer (P1) may be an isotactic structure or a syndiotactic structure from the viewpoint of the performance of the laminated sheet.
- An isotactic structure is preferable from the viewpoint of availability when used.
- the intermediate layer (B) comprises a polyolefin resin, preferably a propylene resin (P2), more preferably a propylene polymer satisfying the following requirements (a-1) and (a-2): (P2a).
- a preferred intermediate layer (B) in the present invention is the propylene polymer (P2a) of 40 to 100% by mass, preferably 50 to 99% by mass, more preferably 60 to 95% by mass, and the following requirement (b-1) And propylene polymer (P2b) satisfying both (b-2) 0 to 60% by mass, preferably 1 to 50% by mass, more preferably 5 to 40% by mass (wherein component (P2a) and component (P2b) ) Comprises a propylene-based resin consisting of 100% by mass in total.
- A-1) Using a differential scanning calorimeter (DSC), the melting point (Tm) measured by the ordinary method described later is less than 120 ° C. or no melting point is observed.
- A-2) Melt flow rate (MFR) measured at 230 ° C. under a load of 2.16 kg is 0.1 to 500 g / 10 min.
- a melting point (Tm) measured by a reheating method described later using a differential scanning calorimeter (DSC) is 120 to 170 ° C., preferably 130 to 160 ° C.
- B-2) Melt flow rate (MFR) (230 ° C., under 2.16 kg load) is 0.1 to 500 g / 10 minutes, preferably 0.1 to 100 g / 10 minutes.
- the intermediate layer (B) may use a styrene elastomer together with a polyolefin resin as a main component, preferably the propylene resin (P2).
- a styrene-type elastomer is 49 mass% or less with respect to the total mass of an intermediate
- Styrenic elastomers include block copolymers (SBS) of polystyrene blocks that become hard parts (crystal parts) and diene monomer blocks that become soft parts, hydrogenated styrene / butadiene / styrene blocks (HSBR), styrene / Examples thereof include an ethylene / propylene / styrene block copolymer (SEBS), a styrene / isobutylene / styrene copolymer (SIBS), and a styrene / isobutylene copolymer (SIB).
- SEBS ethylene / propylene / styrene block copolymer
- SIBS styrene / isobutylene / styrene copolymer
- SIB styrene / isobutylene copolymer
- the styrene / ethylene / propylene / styrene block copolymer is obtained by hydrogenating a styrene / isoprene / styrene block copolymer (SIS).
- SIS styrene / isoprene / styrene block copolymer
- JSR Corporation as trade name: JSR SIS (registered trademark)
- Kuraray Co., Ltd. as trade name: Hibler (registered trademark)
- Shell Corporation as trade name: Clayton D (registered trademark)
- SEPS include those commercially available from Kuraray Co., Ltd. under the trade name: Septon (registered trademark).
- SIBS examples include those commercially available from Kaneka Corporation under the trade name: Shivstar (registered trademark).
- the propylene-based polymer (P2a) constituting the propylene-based polymer (P2a) has a propylene-derived structural unit of 51 to 90 mol%, preferably 60 to 89 mol%, more preferably Is 62 to 88 mol%, particularly preferably 62 to 86 mol%, and ethylene-derived structural units are 7 to 24 mol%, preferably 8 to 22 mol%, more preferably 8 to 20 mol%, particularly preferably 8 to
- the constituent unit derived from ⁇ -olefin having 18 mol% and 4 to 20 carbon atoms is contained in an amount of 0 to 25 mol%, preferably 0 to 24 mol%, more preferably 0 to 23 mol%, particularly preferably 2 to 23 mol%.
- the total of the structural unit derived from propylene, the structural unit derived from ethylene, and the structural unit derived from ⁇ -olefin having 4 to 20 carbon atoms is 100 mol%).
- the ⁇ -olefin 1-butene is preferably used.
- the propylene polymer (P2b) which is another component of the propylene polymer (P2) in the present invention the propylene polymer (P1) described above can be used without limitation.
- the propylene polymer (P2b) and the propylene polymer (P1) may have the same properties or may be different from each other.
- Propylene polymers (P2a) and (P2b) are common, and from the viewpoint of the performance of the laminated sheet, the three-dimensional structure may be an isotactic structure or a syndiotactic structure. From the viewpoint of ease of use and availability when using a commercial product, an isotactic structure is preferable.
- Heat seal layer (C ) is usually comprise polyethylene (E1a) is the density 890 ⁇ 960kg / m 3, preferably comprises polyethylene (E1a) is the density 900 ⁇ 950kg / m 3, more preferably The polyethylene (E1a) is 50 to 100% by mass, more preferably 55 to 99% by mass, and the density is 845 kg / m 3 or more and less than 905 kg / m 3 , preferably 850 kg / cm 3 or more and less than 890 kg / m 3 .
- An ethylene resin composition comprising an ethylene polymer (E1b) of 0 to 50% by mass, preferably 1 to 45% by mass (wherein the component (E1a) and the component (E1b) are 100% by mass in total)) Is used.
- the polyethylene (E1a) is preferably high-pressure low-density polyethylene.
- the polyethylene (E1a) has a melt flow rate (ASTM D1238, 190 ° C., under a load of 2.16 kg) of 0.1 to 50 g / 10 minutes, preferably 1 to 20 g / 10 minutes.
- Polyethylene (E1a) satisfying this range is preferable because it has good moldability and can suppress the neck-in phenomenon.
- the high pressure method low density polyethylene which is a preferred embodiment of polyethylene (E1a) is produced by radical polymerization of ethylene under high pressure in the presence of a radical polymerization initiator in a known tubular reactor, autoclave reactor or the like.
- a long-branched polyethylene resin having a long chain branch, and if necessary, other polymerizable monomers may be copolymerized in a small amount. Examples of such polymerizable monomers include ⁇ -olefins having 3 to 10 carbon atoms, vinyl acetate, and acrylate esters.
- an ethylene homopolymer is preferably used as the polyethylene (E1a).
- the ethylene polymer (E1b), the density of 845 kg / m 3 or more, can be used without limitation ethylene polymer as long as it satisfies the less than 890 kg / m 3.
- the structural unit derived from ethylene is contained in an amount of 80 to 95 mol%
- the structural unit derived from an ⁇ -olefin having 3 to 20 carbon atoms is contained in an amount of 5 to 20 mol% (ethylene and
- An ethylene / ⁇ -olefin copolymer is used in which the total ⁇ -olefin is 100 mol%.
- the melt flow rate (ASTM D1238, 190 ° C., under a load of 2.16 kg) of the ethylene polymer (E1b) is 0.1 to 100 g / 10 min. Two or more kinds of such ethylene polymers (E1b) may be used in combination.
- the ⁇ -olefin copolymerized with ethylene to produce the ethylene polymer (E1b) is an ⁇ -olefin having 3 to 20 carbon atoms, specifically, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene, 1-dodecene, 1-hexadodecene, 1-octadecene, 1-nonadecene, 1-eicosene, 4-methyl-1- Examples include pentene. Among these, ⁇ -olefins having 3 to 10 carbon atoms are preferable.
- An ⁇ -olefin having 4 to 8 carbon atoms is more preferred. Particularly preferred are propylene, 1-butene, 4-methyl-1-pentene, 1-hexene and 1-octene. In particular, these ⁇ -olefins are used alone or in combination of two or more.
- the ethylene polymer (E1b) has a crystallinity measured by an X-ray diffraction method of usually 40% or less, preferably 0 to 39%, more preferably 0 to 35%.
- Such an ethylene-based polymer (E1b) can be produced by a known method using a vanadium catalyst, a titanium catalyst, a metallocene catalyst, or the like.
- Substrate (D) An ethylene polymer (E2) is preferably used for the adherend (D) that adheres to the heat seal layer (C) on the sealant side.
- the density of the ethylene polymer (E2) is 890 to 960 kg / m 3 , preferably 890 to 950 kg / m 3 .
- As the ethylene polymer (E2) a known resin known as high density polyethylene, high pressure method low density polyethylene, or linear low density polyethylene is preferably used.
- the ethylene polymer (E2) may be a homopolyethylene composed only of an ethylene-derived skeleton, or 70 mol% or more of an ethylene-derived skeleton and 30 mol% or less of an ⁇ -olefin-derived skeleton having 3 to 10 carbon atoms.
- the copolymer which consists of may be sufficient.
- the melt flow rate of the ethylene polymer (E1) measured at 190 ° C. under a load of 2.16 kg is usually 0.1 to 30 g / 10 minutes, preferably 0.5 to 20 g / 10 minutes.
- an engineering plastic layer such as polyethylene terephthalate is laminated to form a multilayer sheet adjacent to the surface of the adherend (D) opposite to the surface to be bonded to the heat seal layer. This does not exclude any aspect of forming.
- the base material layer (A), the intermediate layer (B), the heat seal layer (C) and the adherend (D) according to the embodiment of the present invention are blended as optional components in a thermoplastic resin-based laminated film.
- Known antioxidants, heat stabilizers, dyes, neutralizers, anti-discoloring agents, lubricants, antiblocking agents, plasticizers, foaming agents, foaming aids, crosslinking agents, crosslinking aids, stabilizers, crystal nuclei Agents, ultraviolet absorbers, hindered amine light stabilizers, inorganic fillers, organic fillers, and elastomers imparting flexibility may be contained within a range that does not impair the effects of the present invention.
- the addition amount is usually 0.005 to 5 parts by mass, preferably 0.01 to 3 parts by mass with respect to the total mass of each layer.
- the laminated film for the lid material used in the present invention is essentially composed of a three-layer sheet in which the base layer (A), the intermediate layer (B) and the heat seal layer (C) are in direct contact. It is a laminated film included as a sheet.
- “contact” means a structure bonded so as to be in contact with each other, and usually a significant adhesive force is accompanied between the contacted surfaces.
- the thickness of the base layer (A) and the intermediate layer (B) is usually 5 to 500 ⁇ m, preferably 10 to 300 ⁇ m, more preferably 20 to 200 ⁇ m.
- the thickness of the heat seal layer (C) is usually 1 to 50 ⁇ m, preferably 2 to 30 ⁇ m, more preferably 3 to 20 ⁇ m.
- Examples of the method for producing a laminated film as a lid used in the present invention include, for example, raw material resins for the base layer (A), raw material resins for the intermediate layer (B), and heat seal layer (C).
- the raw material resins are supplied to different extruders, and after melting, the base material layer (A), the intermediate layer (B), and the heat seal layer (C) are joined together in this order and laminated.
- a method of processing into a sheet including a step of extruding into a sheet (coextrusion method), a method of laminating a raw material of a coating layer into a sheet produced by a single film into an extruder and extruding it from a die (melt lamination) Method), each film is prepared separately, and thermocompression bonding is performed with a heated group of rolls (thermal laminating method), and other methods in which a solution dissolved in a solvent is applied and dried (coating method), and these
- the combined method or the like can be used without limitation.
- the coextrusion method is preferred in that the production process is short and the adhesion between the layers is good.
- Laminated sheet used as the base material of the container in the laminated sheet (base material) and package present invention as long as you have heat seal layer of the lid (C) and heat-sealable adherend (D) is Layers other than the adherend (D) may optionally be held. Since the bottom material is filled with contents such as food, the laminated sheet is provided with an engineering plastic layer for maintaining the mechanical shape, or oxidation resistance and moisture resistance so as not to miss the flavor of the contents. For this purpose, metal layers having various barrier functions represented by aluminum foil may be laminated.
- the laminated sheet for the bottom material filled with the heat seal layer (C) surface of the laminated film for the lid and the contents such as food
- the adherend (D) surface of (to-be-sealed body) and heat-sealing airtightness, practical peel strength, properties that do not generate health harmful components even during heating, and resealing function It is possible to tailor a package body having
- the heat seal layer (C) of the laminated film for the lid material used in the present invention is heat sealed to the adherend (D) to be sealed to form a heat seal portion, and then the multilayer film is formed from the heat seal portion.
- the heat seal layer (C) is exposed in the heat seal portion by breakage of the heat seal layer (C) from the multilayer film, the intermediate layer (B) and the heat seal layer (C ) And the transition of the broken heat seal layer (C) to the adherend (D) side of the adherend.
- Conditions for peeling the multilayer film are, for example, as follows. Peeling speed: 300 m / min Peeling angle: 180 ° Temperature: Normal temperature (23 ° C)
- the initial peel strength (peel strength when peeled for the first time after the heat seal layer (C) is heat sealed to the adherend (D)) is 3 N / 15 mm width or more and 20 N / 15 mm width or less. Preferably, it is in the range of 5 N / 15 mm width or more and 18 N / 15 mm width.
- the delamination strength is 3 N / 15 mm width or more, problems such as easy opening of the packaging body due to a slight impact are unlikely to occur, and if it is 20 N / 15 mm width or less, the packaging body From the viewpoint of easy opening, which is a characteristic that allows the lid portion to be easily opened by hand.
- the strength (reseal peel strength) is preferably 0.05 N / 15 mm width or more.
- the resealing peel strength is 0.1 N / 15 mm width or more, preferably 0.2 N / 15 mm width or more only by pressure pressing with hands or fingers, since practical resealability can be obtained.
- the base material layer (A), the intermediate layer (B) and the heat seal layer (C) are (A) / (B) / (C).
- the base layer (A) includes a polyolefin resin
- the intermediate layer (B) includes the propylene polymer (P2a)
- the heat seal layer (C) includes the polyethylene (E1a). Is a resealable packaging container.
- the intermediate layer (B) and the heat seal layer (C) are delaminated and both layers are exposed in a resealable state.
- the intermediate layer (B) contains the propylene polymer (P2a) as an essential component
- the heat seal layer (C) contains the polyethylene (E1a) as an essential component. The same as above except that it includes.
- Ethylene polymer Mirason TM 11P high-pressure low-density polyethylene manufactured by Mitsui Chemicals, density: 917 kg / m 3 , MFR at 190 ° C .: 7.2 g / 10 min
- Neozex TM 0234N Linear low density polyethylene manufactured by Prime Polymer, 190 ° C., MFR under 2.16 kg load: 2 g / 10 min, density: 0.919 g / cm 3 , melting point: 120 ° C., butene content (Amount: 7% by mass)
- TAFMER TM DF640 produced by Mitsui Chemicals ethylene-butene copolymer, density: 864kg / m 3, under 230 °C MFR: 6.7g / 10 min, the TF-1 In Table 1 hereinafter
- Tuffmer TM A35070 Mitsubishi Chemicals ethylene / butene copolymer, density
- a propylene resin composition composed of 85% by mass of a propylene / ethylene / 1-butene copolymer (corresponding to the propylene polymer (P2a) in the present invention) of 7 g / 10 min was obtained.
- this composition may be abbreviated as a prepared PP composition.
- Example 1 Prime Polypro TM F107 (abbreviated as hPP in the table) (resin for base layer), prepared PP composition (resin composition for intermediate layer), Mirason, high-pressure low-density polyethylene TM 11P (abbreviated as HPLD in the table) (resin for heat seal layer (C)), co-extruder equipped with a T die with a lip width of 1 mm (multilayer cast molding machine, Sumitomo Heavy Industries Modern Co., Ltd.) was put into each hopper.
- the cylinder temperature is set to 240 ° C.
- the die temperature is set to 250 ° C.
- the melt-kneaded material is coextruded from the T die, and cast molding is performed.
- a Neozex 0234N sheet hereinafter abbreviated as LLDPE
- LLDPE Neozex 0234N sheet
- the Teflon (registered trademark) sheet was removed, and the heat-sealed film part was left at room temperature of about 23 ° C. for 1 day.
- a slit having a width of 15 mm was formed so as to include the heat seal portion of the film, and the unsealed portion was chucked by a tensile tester (“IM-20ST” manufactured by INTERSCO).
- IM-20ST tensile tester
- rate of 300 mm / min was measured. The above operation was performed 5 times, and the average value of the maximum strengths was taken as the initial peel strength.
- the heat seal layer (C) is broken near the boundary between the non-heat seal portion and the heat seal portion, and the heat seal layer (C) is the adherend in the heat seal portion.
- the intermediate layer (B) is peeled from the heat seal layer (C) and exposed, and then the heat seal layer (near the boundary between the heat seal portion and the non-heat seal portion) C) broke and the heat seal portion of the heat seal layer (C) was cut off, and the lid member was separated from the adherend (D).
- Example 1 About the laminated
- the base material layer (A), the intermediate layer (B) and the heat seal layer (C), both of which are made of a polyolefin-based polymer, are (A) / (B) / (C).
- the heat seal layer (C) and the adherend (D) in the multilayer film sequentially laminated are heat sealed, and then the multilayer film is peeled from the heat seal portion, the intermediate layer (B) and the heat seal layer
- the initial delamination strength is excellent, and repeated opening and resealed with fingers
- the decrease in peel strength can be suppressed, it can be suitably used for packaging of foods and the like that are repeatedly opened and resealed.
- the packaging body of the present invention does not use a component that pushes up the heptane extract such as styrene resin, the health risk to the human body can be suppressed even when food is stored for a long period of time and used under heating. .
- ⁇ ⁇ Suitable for use in resealable packaging containers with excellent openability / resealability and excellent food hygiene.
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
- Packages (AREA)
Abstract
Description
[1]基材層(A)、中間層(B)およびヒートシール層(C)が、(A)/(B)/(C)の順に積層されている3層を含む多層フィルムを用いた蓋材と、前記ヒートシール層(C)と接着可能な被着体(D)を有する単層もしくは多層シートを用いた底材とを有する再封性包装体であって、
前記基材層(A)、中間層(B)およびヒートシール層(C)は、いずれもポリオレフィン樹脂を含んでなり、
ヒートシール層(C)と被着体(D)とをヒートシールさせてヒートシール部を形成し、次いで該ヒートシール部から前記多層フィルムを剥離した時に、前記中間層(B)とヒートシール層(C)とが層間剥離し、かつ両層が再封可能な状態で露出する再封性包装容器。
[2]前記中間層(B)の露出が、前記ヒートシール部において、前記ヒートシール層(C)の前記多層フィルムからの破断と、前記中間層(B)と前記ヒートシール層(C)の層間剥離と、前記ヒートシール層(C)の前記被着体(D)への移行によって行われる[1]に記載の再封性包装容器。
[3]前記基材層(A)が、示差走査熱量計(DSC)で測定される融点(Tm)が120~170℃の範囲にあるプロピレン系重合体(P1)からなる[1]または[2]に記載の再封性包装容器。
[4]前記中間層(B)が、下記要件(a-1)および(a-2)を満たすプロピレン系重合体(P2a)を含んでなることを特徴とする[1]または[2]に記載の再封性包装容器。
(a-1)示差走査熱量計(DSC)で測定される融点(Tm)が120℃未満または融点が観測されない。
(a-2)230℃、2.16kg荷重下で測定したメルトフローレート(MFR)が0.1~500g/10分である。
[5]前記ヒートシール層(C)が、密度890~960kg/m3であるポリエチレン(E1a)を含んでなることを特徴とする[1]または[2]に記載の再封性包装容器。
[6]被シール体の被着体(D)が、密度890~960kg/m3であるポリエチレン(E2)からなることを特徴とする[1]または[2]に記載の再封性包装容器。
基材層(A)は、ポリオレフィン系樹脂から構成されており、好ましくは示差走査熱量計(DSC)で測定される融点(Tm)が120~170℃、好ましくは130~165℃の範囲にあるプロピレン系重合体(P1)からなる。なお、融点(Tm)は後述するように再昇温法で測定される値である。プロピレン系重合体(P1)の好ましい態様では、さらに、メルトフローレート(MFR)(230℃、2.16kg荷重下)が0.1~500g/10分、好ましくは0.1~100g/10分を満たす。
中間層(B)は、ポリオレフィン系樹脂を含んでなり、好ましくはプロピレン系樹脂(P2)を含んでなり、より好ましくは下記要件(a-1)および(a-2)を満たすプロピレン系重合体(P2a)を含んでなる。本発明における好ましい中間層(B)は、当該プロピレン系重合体(P2a)40~100質量%、好ましくは50~99質量%、より好ましくは60~95質量%と、下記要件(b-1)および(b-2)を共に満たすプロピレン系重合体(P2b)0~60質量%、好ましくは1~50質量%、より好ましくは5~40質量%(ここで、成分(P2a)と成分(P2b)とは合計して100質量%)からなるプロピレン系樹脂を含んでなる。
(a-1)示差走査熱量計(DSC)を用いて、後述する通常法で測定される融点(Tm)が120℃未満または融点が観測されない。
(a-2)230℃、2.16kg荷重下で測定したメルトフローレート(MFR)が0.1~500g/10分である。
(b-1)示差走査熱量計(DSC)を用いて、後述する再昇温法によって測定される融点(Tm)が120~170℃、好ましくは130~160℃である。
(b-2)メルトフローレート(MFR)(230℃、2.16kg荷重下)が0.1~500g/10分、好ましくは0.1~100g/10分である。
スチレン系エラストマーとしては、硬質部(結晶部)となるポリスチレンブロックと、軟質部となるジエン系モノマーブロックとのブロック共重合体(SBS)、水添スチレン・ブタジエン・スチレンブロック(HSBR)、スチレン・エチレン・プロピレン・スチレンブロック共重合体(SEBS)、スチレン・イソブチレン・スチレン共重合体(SIBS)、スチレン・イソブチレン共重合体(SIB)などを例示することができる。ポリスチレン系エラストマーは、単独または2種類以上を組み合せて用いられる。
ヒートシール層(C)は、通常は密度890~960kg/m3であるポリエチレン(E1a)を含んでなり、好ましくは密度900~950kg/m3であるポリエチレン(E1a)を含んでなり、より好ましくは当該ポリエチレン(E1a)50~100質量%、より好ましくは55~99質量%と、密度が845kg/m3以上、905kg/m3未満、好ましくは850kg/cm3以上、890kg/m3未満であるエチレン系重合体(E1b)0~50質量%、好ましくは1~45質量%(ここで、成分(E1a)と成分(E1b)とは合計して100質量%)からなるエチレン系樹脂組成物が用いられる。
被シール体側の、前記ヒートシール層(C)と接着する被着体(D)には、エチレン系重合体(E2)が好んで用いられる。エチレン系重合体(E2)の密度は、890~960kg/m3、好ましくは890~950kg/m3である。エチレン系重合体(E2)としては高密度ポリエチレン、高圧法低密度ポリエチレン、直鎖状低密度ポリエチレンとして知られている公知樹脂が好んで用いられる。エチレン系重合体(E2)は、エチレン起因骨格のみから構成されたホモポリエチレンであってもよいし、エチレン起因骨格70モル%以上と、炭素数3~10のα-オレフィン起因骨格30モル%以下からなる共重合体であってもよい。エチレン系重合体(E1)の、190℃、2.16kg荷重下で測定されたメルトフローレートは、通常0.1~30g/10分、好ましくは0.5~20g/10分である。なお本発明は、後述するように被着体(D)の前記ヒートシール層と接着される面とは反対側の面に隣接する形で、ポリエチレンテレフタレート等のエンジニアリングプラスチック層が積層して多層シートを形成する態様を何ら排除するものではない。
本発明に実施形態に係る基材層(A)、中間層(B)ヒートシール層(C)および被着体(D)には、任意成分として、熱可塑性樹脂系積層フィルムに配合される公知の酸化防止剤、耐熱安定剤、染料、中和剤、変色防止剤、滑剤、アンチブロッキング剤、可塑剤、発泡剤、発泡助剤、架橋剤、架橋助剤、安定剤、結晶核剤、紫外線吸収剤、ヒンダードアミン系光安定剤、無機充填剤、有機充填剤、及び柔軟性を付与するエラストマー等を、本発明の効果を阻害しない範囲において含有させてもよく、好ましい形態では、紫外線吸収剤、耐熱安定剤、およびヒンダードアミン型光安定剤から選択される一種類以上の安定剤を含む。通常、上記添加剤を併用する場合、その添加量は各層の全質量に対して通常0.005~5質量部、好ましくは0.01~3質量部である。
既に述べたように、本発明で用いられる蓋材用の積層フィルムは、基材層(A)、中間層(B)およびヒートシール層(C)が直接接触されてなる3層シートを必須構成シートとして含む積層フィルムである。なお、本発明において「接触」とは、接触するように貼り合わせた構造であることを意味し、通常は接触された面と面の間には有意の接着力が伴われている。
本発明において容器の底材として用いられる積層シートは、蓋材のヒートシール層(C)とヒートシール可能な被着体(D)を持っている限りは、被着体(D)以外の層を任意に保有していてもよい。底材には、食品などの内容物が充填されるので、該積層シートには、機械的形状を保つためのエンジニアリングプラスチック層、あるいは内容物の風味を逃さない、耐酸化性、耐湿性を付与するためのアルミニウム箔に代表される各種のバリアー機能を持つ金属層が積層されていてもよい。
剥離速度:300m/分
剥離角度:180°
温度:常温(23℃)
また、本発明のもう一つの態様の再封性包装容器は、基材層(A)、中間層(B)およびヒートシール層(C)が、(A)/(B)/(C)の順に積層されている3層を含む多層フィルムを用いた蓋材と、前記ヒートシール層(C)と接着可能な被着体(D)を有する単層もしくは多層シートを用いた底材とを有し、前記基材層(A)はポリオレフィン系樹脂を含んでなり、前記中間層(B)は前記プロピレン系重合体(P2a)を含んでなり、前記ヒートシール層(C)は前記ポリエチレン(E1a)を含んでなる再封性包装容器である。
この再封性包装容器によれば、ヒートシール層(C)と被着体(D)とをヒートシールさせてヒートシール部を形成し、次いで該ヒートシール部から前記多層フィルムを剥離した時に、前記中間層(B)と前記ヒートシール層(C)とが層間剥離し、かつ両層が再封可能な状態で露出する。
この再封性包装容器の実施態様の詳細は、前記中間層(B)が前記プロピレン系重合体(P2a)を必須成分として含み、前記ヒートシール層(C)が前記ポリエチレン(E1a)を必須成分として含む点を除いて上記同様である。
(1)密度:ASTM D1505に準拠し、23℃で測定した。
(2)メルトフローレート(MFR):ASTM D1238に準拠し、190℃または230℃、2.16kg荷重下で測定した。
(3)融点(通常法):23℃±2℃で72時間以上の状態調節を実施した後の試験体にて、-40℃まで冷却してから昇温速度10℃/minの条件下で測定したときに得られるDSC曲線を作成した。このときに得られた融解ピーク温度を融点(通常法)とした。
(4)融点(再昇温法):DSC測定装置内で10分間200℃保持した後、降温速度10℃/minで-20℃まで冷却し、-20℃で1分間保持した後、再度昇温速度10℃/minの条件下で測定したときに得られるDSC曲線を作成した。このときに得られた融解ピーク温度を融点(再昇温法)とした。
(1)エチレン系重合体
・ミラソンTM11P(三井化学社製の高圧法低密度ポリエチレン、密度:917kg/m3、190℃下でのMFR:7.2g/10分)
・ネオゼックスTM0234N(プライムポリマー社製の直鎖状低密度ポリエチレン、190℃、2.16kg荷重下でのMFR:2g/10分、密度:0.919g/cm3、融点:120℃、ブテン含有量:7質量%)
・タフマーTMDF640(三井化学製のエチレン・ブテン共重合体、密度:864kg/m3、230℃下でのMFR:6.7g/10分、表1ではTF-1と略記)
・タフマーTMA35070(三井化学製のエチレン・ブテン共重合体、密度:870kg/m3、230℃下でのMFR:65g/10分、表1ではTF-2と略記)
・タフマーTMP0275(三井化学製のエチレン・プロピレン共重合体、密度:861kg/m3、230℃下でのMFR:5.4g/10分、表1ではTF-3と略記)
・プライムポリプロTMF107(プライムポリマー製のプロピレン単独重合体、密度:900kg/m3、230℃下でのMFR:7.0g/10分)
・プロピレン系樹脂組成物;本願出願人によって出願され、既にWO2006/57361号として公開されている明細書の<第三の発明>の実施例欄に記載された方法に準じて調製した。その結果、再昇温法により測定された融点(Tm)が160℃、230℃測定MFRが7g/10分であるプロピレン単独重合体(本発明におけるプロピレン系重合体(P2b)に相当)15質量%と、エチレン起因骨格含量14モル%、プロピレン起因骨格含量67モル%、1-ブテン起因骨格含量19モル%であり、通常法で測定したTmが観測されず、230℃下で測定したMFRが7g/10分であるプロピレン・エチレン・1-ブテン共重合体(本発明におけるプロピレン系重合体(P2a)に相当)85質量%からなるプロピレン系樹脂組成物を得た。以下、この組成物を調製PP組成物と略称する場合がある。
プロピレン単独重合体であるプライムポリプロTMF107(表中では、hPPと略記)(基材層用の樹脂)、調製PP組成物(中間層用の樹脂組成物)、高圧法低密度ポリエチレンであるミラソンTM11P(表中では、HPLDと略記)(ヒートシール層(C)用の樹脂)を、リップ幅1mmのTダイを設置した共押出機(多層キャスト成形機、住友重機械モダン(株))のホッパーにそれぞれ投入した。そして、シリンダー温度を240℃、ダイス温度を250℃に設定し、Tダイから溶融混練物を共押出して、キャスト成形することにより、厚さ40μmの基材層(A)と厚さ40μmの中間層(B)と厚さ10μmのヒートシール層(C)からなる積層フィルム(三層シート)を得た。これを包装体の蓋材に使用した。なお底材としては、テスト試験の簡便化のために被着体そのものである直鎖状低密度ポリエチレンであるネオゼックス0234Nシート(以下、LLDPEと略記)を使用した。
次いで、蓋材用の積層フィルムのヒートシール層(C)と、底材用の被着体(D)としてのLLDPEが接するようにフィルムを重ね、重ねたフィルムの両面を厚さ50μmのテフロン(登録商標)シートで挟んだ試験体を作製した。次いで、ヒートシールテスター(テスター産業株式会社製TB-701B型)のヒートシールバーを幅5mm×長さ300mmに設置し、シールバー下側を170℃に設定した。ヒートシールバー部分に、該試験体を挟み、0.2MPaの圧力で1.0秒間ヒートシールを行った。テフロン(登録商標)シートを外し、ヒートシールされたフィルム部分を約23℃の室温下で1日間放置した。フィルムのヒートシール部分を含むように15mm幅のスリットを入れ、シールされていない部分を引張試験機(「INTESCO社製 IM-20ST」)にチャックした。300mm/分の速度で底材から蓋材を剥離する際のフィルムの180°剥離強度を測定した。上記操作を5回行い、その最大強度の平均値を初期剥離強度とした。
この剥離の際、まず、非ヒートシール部と前記ヒートシール部との境界付近で前記ヒートシール層(C)が破断し、前記ヒートシール部において、前記ヒートシール層(C)が前記被着体(D)へ移行すると共に前記中間層(B)が前記ヒートシール層(C)から剥離して露出し、次に、前記ヒートシール部と非ヒートシール部との境界付近で前記ヒートシール層(C)が破断して前記ヒートシール層(C)のうちヒートシール部が切り離され、蓋材が被着体(D)から分離された。
上記のようにして開封された中間層とヒートシール層とを、指で再度圧着・再封した後、上記との初期剥離強度測定法と同様にして再封(1回目)剥離強度を測定した。この開封・再封操作を5回繰り返して、再封剥離強度がどの程度維持されるかを評価した。結果を表1に示した。
表1に記載した層構成を持つ蓋材用積層フィルムについて、実施例1に記載した方法と同様な方法で、初期剥離強度と再封剥離強度を測定した。結果を表1に示した。
Claims (6)
- 基材層(A)、中間層(B)およびヒートシール層(C)が、(A)/(B)/(C)の順に積層されている3層を含む多層フィルムを用いた蓋材と、前記ヒートシール層(C)と接着可能な被着体(D)を有する単層もしくは多層シートを用いた底材とを有する再封性包装体であって、
前記基材層(A)、中間層(B)およびヒートシール層(C)は、いずれもポリオレフィン樹脂を含んでなり、
ヒートシール層(C)と被着体(D)とをヒートシールさせてヒートシール部を形成し、次いで該ヒートシール部から前記多層フィルムを剥離した時に、前記中間層(B)とヒートシール層(C)とが層間剥離し、かつ両層が再封可能な状態で露出することを特徴とする再封性包装容器。 - 前記中間層(B)の露出が、前記ヒートシール部において、前記ヒートシール層(C)の前記多層フィルムからの破断と、前記中間層(B)と前記ヒートシール層(C)の層間剥離と、前記ヒートシール層(C)の前記被着体(D)への移行によって行われることを特徴とする請求項1に記載の再封性包装容器。
- 前記基材層(A)が、示差走査熱量計(DSC)で測定される融点(Tm)が120~170℃の範囲にあるプロピレン系重合体(P1)からなることを特徴とする請求項1または2に記載の再封性包装容器。
- 前記中間層(B)が、下記要件(a-1)および(a-2)を満たすプロピレン系重合体(P2a)を含んでなることを特徴とする請求項1または2に記載の再封性包装容器。
(a-1)示差走査熱量計(DSC)で測定される融点(Tm)が120℃未満または融点が観測されない。
(a-2)230℃、2.16kg荷重下で測定したメルトフローレート(MFR)が0.1~500g/10分である。 - 前記ヒートシール層(C)が、密度890~960kg/m3であるポリエチレン(E1a)を含んでなることを特徴とする請求項1または2に記載の再封性包装容器。
- 被シール体の被着体(D)が、密度890~960kg/m3であるポリエチレン(E2)からなることを特徴とする請求項1または2に記載の再封性包装容器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17747526.6A EP3412599A4 (en) | 2016-02-04 | 2017-02-02 | RE-EXCLUDABLE PACKAGING CONTAINER |
JP2017565627A JP6831340B2 (ja) | 2016-02-04 | 2017-02-02 | 再封性包装容器 |
US16/074,361 US20200282709A1 (en) | 2016-02-04 | 2017-02-02 | Resealable packaging container |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016-019449 | 2016-02-04 | ||
JP2016019449 | 2016-02-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017135375A1 true WO2017135375A1 (ja) | 2017-08-10 |
Family
ID=59501053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2017/003801 WO2017135375A1 (ja) | 2016-02-04 | 2017-02-02 | 再封性包装容器 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200282709A1 (ja) |
EP (1) | EP3412599A4 (ja) |
JP (1) | JP6831340B2 (ja) |
WO (1) | WO2017135375A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019099785A (ja) * | 2017-11-28 | 2019-06-24 | 三菱ケミカル株式会社 | 食品包装用フィルム、食品用ストレッチフィルム、食品用小巻ラップフィルム及び食品包装用フィルムの製造方法 |
JP2019151351A (ja) * | 2018-02-28 | 2019-09-12 | 三菱ケミカル株式会社 | 包装体 |
JP2021014288A (ja) * | 2019-07-12 | 2021-02-12 | 三井化学株式会社 | 再封性包装容器 |
WO2023095618A1 (ja) * | 2021-11-24 | 2023-06-01 | 三井化学株式会社 | 積層フィルム、容器、細胞培養容器、細胞培養方法及び細胞培養用容器の製造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003175567A (ja) | 2001-08-30 | 2003-06-24 | Dainippon Ink & Chem Inc | 多層フィルム、その製造方法、容器の蓋材および袋 |
JP2006045527A (ja) * | 2004-06-29 | 2006-02-16 | Tohcello Co Ltd | 粘着剤組成物とそれを用いた積層フィルム及びその用途 |
WO2006057361A1 (ja) | 2004-11-25 | 2006-06-01 | Mitsui Chemicals, Inc. | プロピレン系樹脂組成物およびその用途 |
JP2007253395A (ja) | 2006-03-22 | 2007-10-04 | Mitsubishi Plastics Ind Ltd | 再封機能付き多層フィルム及びこれを用いた再封可能な包装体 |
JP2007268913A (ja) * | 2006-03-31 | 2007-10-18 | Tohcello Co Ltd | 積層フィルム及び積層フィルムからなる包装材料 |
JP2013023564A (ja) | 2011-07-20 | 2013-02-04 | Mitsui Chemicals Inc | 食品容器 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4419054B2 (ja) * | 2003-10-15 | 2010-02-24 | Dic株式会社 | 多層フィルム、容器の蓋材および袋 |
TW200613496A (en) * | 2004-06-29 | 2006-05-01 | Tohcello Co Ltd | Laminated film using adhesive composition therein and its application |
JP5117255B2 (ja) * | 2008-03-31 | 2013-01-16 | 三菱樹脂株式会社 | 再封機能付き多層フィルム及びこれを用いた包装体 |
-
2017
- 2017-02-02 JP JP2017565627A patent/JP6831340B2/ja active Active
- 2017-02-02 US US16/074,361 patent/US20200282709A1/en not_active Abandoned
- 2017-02-02 EP EP17747526.6A patent/EP3412599A4/en not_active Withdrawn
- 2017-02-02 WO PCT/JP2017/003801 patent/WO2017135375A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003175567A (ja) | 2001-08-30 | 2003-06-24 | Dainippon Ink & Chem Inc | 多層フィルム、その製造方法、容器の蓋材および袋 |
JP2006045527A (ja) * | 2004-06-29 | 2006-02-16 | Tohcello Co Ltd | 粘着剤組成物とそれを用いた積層フィルム及びその用途 |
WO2006057361A1 (ja) | 2004-11-25 | 2006-06-01 | Mitsui Chemicals, Inc. | プロピレン系樹脂組成物およびその用途 |
JP2007253395A (ja) | 2006-03-22 | 2007-10-04 | Mitsubishi Plastics Ind Ltd | 再封機能付き多層フィルム及びこれを用いた再封可能な包装体 |
JP2007268913A (ja) * | 2006-03-31 | 2007-10-18 | Tohcello Co Ltd | 積層フィルム及び積層フィルムからなる包装材料 |
JP2013023564A (ja) | 2011-07-20 | 2013-02-04 | Mitsui Chemicals Inc | 食品容器 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3412599A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019099785A (ja) * | 2017-11-28 | 2019-06-24 | 三菱ケミカル株式会社 | 食品包装用フィルム、食品用ストレッチフィルム、食品用小巻ラップフィルム及び食品包装用フィルムの製造方法 |
JP7155590B2 (ja) | 2017-11-28 | 2022-10-19 | 三菱ケミカル株式会社 | 食品包装用インフレーションフィルム、食品用ストレッチフィルム、食品用小巻ラップフィルム及び食品包装用フィルムの製造方法 |
JP2019151351A (ja) * | 2018-02-28 | 2019-09-12 | 三菱ケミカル株式会社 | 包装体 |
JP2021014288A (ja) * | 2019-07-12 | 2021-02-12 | 三井化学株式会社 | 再封性包装容器 |
WO2023095618A1 (ja) * | 2021-11-24 | 2023-06-01 | 三井化学株式会社 | 積層フィルム、容器、細胞培養容器、細胞培養方法及び細胞培養用容器の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20200282709A1 (en) | 2020-09-10 |
EP3412599A1 (en) | 2018-12-12 |
JPWO2017135375A1 (ja) | 2018-11-01 |
JP6831340B2 (ja) | 2021-02-17 |
EP3412599A4 (en) | 2019-09-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5036145B2 (ja) | 粘着剤組成物とそれを用いた積層フィルム及びその用途 | |
TWI625238B (zh) | Easy-opening laminated film and use thereof | |
JP6831340B2 (ja) | 再封性包装容器 | |
WO2006001548A2 (en) | An adhesive compound composition, laminated film using it and uses thereof | |
JP4859442B2 (ja) | 積層フィルム及び積層フィルムからなる包装材料 | |
JP2024026060A (ja) | 多層フィルムおよびそれを含む包装 | |
JP6315798B2 (ja) | 多層シーラントフィルム | |
JP6262071B2 (ja) | ヒートシール性フィルム及び積層体 | |
JP6473009B2 (ja) | 積層フィルム、包装材料及び包装容器 | |
JP2018167487A (ja) | 食品用包装フィルムおよび食品用包装体 | |
KR20070031344A (ko) | 점착제 조성물과 그를 이용한 적층 필름 및 그 용도 | |
JP2019156484A (ja) | 易剥離性フィルム | |
JP2021014288A (ja) | 再封性包装容器 | |
JP4974565B2 (ja) | 積層フィルム及び積層フィルムからなる包装材料 | |
JP6822198B2 (ja) | シーラント用接着剤及び易剥離性フィルム | |
JP2021095162A (ja) | 易開封性フィルムおよび包装体 | |
JP2020164178A (ja) | 包装材料および包装体 | |
JP6344012B2 (ja) | 紙基材シート及びこれを用いたハーフクリアパック | |
JP2018154031A (ja) | 易開封性積層フィルム、これを用いた易開封性蓋材及び易開封性容器、並びに、これらに使用可能な押出ラミネート用の食品包装材材料 | |
JP2001287323A (ja) | 易開封性積層体およびそれを用いた蓋材および軟包装材 | |
JP7082072B2 (ja) | 易開封性シーラントフィルム | |
JP2022053375A (ja) | フィルム、共押出フィルム、包装体、および、袋体 | |
JP2022080921A (ja) | 易開封性フィルム | |
JP2001131307A (ja) | 易剥離性フィルム及びその用途 | |
JP2022080919A (ja) | 易開封性フィルム |
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: 17747526 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2017565627 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2017747526 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2017747526 Country of ref document: EP Effective date: 20180904 |