WO2021251225A1 - 積層フィルム及び包装体 - Google Patents

積層フィルム及び包装体 Download PDF

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Publication number
WO2021251225A1
WO2021251225A1 PCT/JP2021/020933 JP2021020933W WO2021251225A1 WO 2021251225 A1 WO2021251225 A1 WO 2021251225A1 JP 2021020933 W JP2021020933 W JP 2021020933W WO 2021251225 A1 WO2021251225 A1 WO 2021251225A1
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WO
WIPO (PCT)
Prior art keywords
layer
laminated film
base material
flexible
thickness
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.)
Ceased
Application number
PCT/JP2021/020933
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English (en)
French (fr)
Japanese (ja)
Inventor
みづほ 井上
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.)
Sumitomo Bakelite Co Ltd
Original Assignee
Sumitomo Bakelite Co Ltd
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 Sumitomo Bakelite Co Ltd filed Critical Sumitomo Bakelite Co Ltd
Priority to JP2022530496A priority Critical patent/JP7294539B2/ja
Publication of WO2021251225A1 publication Critical patent/WO2021251225A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • 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
    • 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

  • a slit is formed in the planned division portion of the package to be divided in this way in the thickness direction of the package, and the package can be easily divided by bending the package at the portion where the slit is formed. Designed for.
  • the base material layer 11 is preferably a resin layer containing a resin.
  • Examples of the resin contained in the base material layer 11 include polyvinyl chloride resins such as polyvinyl chloride (PVC) and polyvinylidene chloride (PVDC); fluororesins such as polychlorotrifluoroethylene (PCTFE); polyethylene terephthalate (PET). Such as polyester; polyamide such as nylon and the like can be mentioned.
  • the polyvinyl-based resin is a resin having a structural unit derived from a monomer having a vinyl group (ethenyl group).
  • the fluororesin is a resin having a fluorine atom.
  • the non-resin component contained in the base material layer 11 may be only one kind, may be two or more kinds, and when there are two or more kinds, the combination and ratio thereof are arbitrary depending on the purpose. Can be selected.
  • the non-resin component contained in the second flexible layer 122 may be only one kind, may be two or more kinds, and when there are two or more kinds, the combination and ratio thereof may be determined according to the purpose. It can be selected arbitrarily.
  • the inner layer 14 may contain only the resin, or may contain the resin and other non-resin components.
  • non-resin component examples include additives, solvents and the like known in the art.
  • additive and solvent which are non-resin components include the same additives and solvents as those described above as those contained in the base material layer 11.
  • the thickness t 14 of the inner layer 14 is preferably 1 to 5 times the thickness t 11 of the base material layer 11, and is, for example, 1.1 to 5 times and 1.2 to 1.2 times. It may be any of 5 times.
  • Water vapor barrier layer examples of the resin contained in the water vapor barrier layer include polyvinylidene chloride (PVDC), polychlorotrifluoroethylene (PCTFE), cyclic polyolefin and the like.
  • PVDC polyvinylidene chloride
  • PCTFE polychlorotrifluoroethylene
  • cyclic polyolefin examples of the resin contained in the water vapor barrier layer include polyvinylidene chloride (PVDC), polychlorotrifluoroethylene (PCTFE), cyclic polyolefin and the like.
  • the water vapor barrier layer may contain only the resin, or may contain the resin and other non-resin components.
  • non-resin component examples include additives, solvents and the like known in the art.
  • additive and solvent which are non-resin components include the same additives and solvents as those described above as those contained in the base material layer 11.
  • the total content of polyvinylidene chloride and polychlorotrifluoroethylene in the water vapor barrier layer with respect to the total content of the resin is preferably 80% by mass or more, more preferably 90% by mass or more, and may be, for example, 95% by mass or more, 97% by mass or more, or 99% by mass or more.
  • the ratio is at least the lower limit, the water vapor barrier property of the water vapor barrier layer and the laminated film 1 becomes higher.
  • the upper limit of the ratio is not particularly limited, and the ratio may be 100% by mass or less.
  • oxygen barrier layer examples of the resin contained in the oxygen barrier layer include polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (also known as ethylene-vinyl acetate copolymer saken product, EVOH), polyamide, polyvinyl alcohol, and polyacrylonitrile. And so on.
  • PVDC polyvinylidene chloride
  • EVOH ethylene-vinyl alcohol copolymer
  • polyamide polyamide
  • polyvinyl alcohol polyacrylonitrile
  • the copolymerization ratio of ethylene is 30 to 50. It is preferably mol%.
  • the ethylene-vinyl alcohol copolymers such ones have a higher oxygen barrier property.
  • the oxygen barrier layer preferably contains one or both of polyvinylidene chloride and an ethylene-vinyl alcohol copolymer in that the oxygen barrier property of the oxygen barrier layer and the laminated film 1 is higher.
  • non-resin component examples include additives, solvents and the like known in the art.
  • additive and solvent which are non-resin components include the same additives and solvents as those described above as those contained in the base material layer 11.
  • the non-resin component contained in the oxygen barrier layer may be only one kind, may be two or more kinds, and when there are two or more kinds, the combination and ratio thereof may be arbitrary depending on the purpose. You can choose.
  • the thickness of the oxygen barrier layer is not particularly limited, but is preferably 5 to 70 ⁇ m, more preferably 7.5 to 65 ⁇ m, and even more preferably 10 to 60 ⁇ m.
  • the thickness is at least the lower limit, the oxygen barrier property of the laminated film 1 (oxygen barrier layer) becomes higher.
  • the thickness is not more than the upper limit value, it is possible to prevent the oxygen barrier layer from becoming excessively thick, and for example, the laminated film 1 can be made thinner.
  • the second intermediate layer 132 is the same as the first intermediate layer 131, except that the arrangement positions in the laminated film 1 are different.
  • the first intermediate layer 131 and the second intermediate layer 132 in the laminated film 1 may be the same as each other or may be different from each other.
  • the total thickness of the first intermediate layer 131 and the second intermediate layer 132 is not particularly limited, but is 8 to 180 ⁇ m. It is preferably 10 to 140 ⁇ m, more preferably 30 to 105 ⁇ m, and even more preferably 30 to 105 ⁇ m.
  • the thickness is at least the lower limit value, the water vapor barrier property of the laminated film 1 becomes higher.
  • the laminated film 1 can be made thinner.
  • the total thickness of the first intermediate layer 131 and the second intermediate layer 132 is not particularly limited, but is 10 to 140 ⁇ m. It is preferably 15 to 130 ⁇ m, more preferably 20 to 120 ⁇ m, and even more preferably 20 to 120 ⁇ m.
  • the thickness is at least the lower limit value, the oxygen barrier property of the laminated film 1 becomes higher.
  • the laminated film 1 can be made thinner.
  • the second flexible layer 122 is arranged at a distance of 0.6 T or less from the first surface 11a of the base material layer 11.
  • first surface 11a of the base material layer 11 and the surface of the second flexible layer 122 on the base material layer 11 side may be referred to as "first surface” in the present specification.
  • the distance D between 122a and 122a is 0.6T or less.
  • the base material layer of the flexible layer arranged farthest from the base material layer in the thickness direction of the laminated film may be attached to the distance from the first surface of the above.
  • the distance (D) of the second flexible layer 122 from the first surface 11a of the base material layer 11 is an arbitrary combination of the above lower limit value and any upper limit value. It can be adjusted as appropriate within the set range.
  • the second flexible layer 122 may be arranged at a distance of 0.2T to 0.6T from the first surface 11a of the base material layer 11 in the thickness direction of the laminated film 1. It may be arranged at a distance of 0.2T to 0.55T, it may be arranged at a distance of 0.2T to 0.5T, or it may be arranged at a distance of 0.2T to 0.45T. May be.
  • FIG. 2 is a cross-sectional view schematically showing another example of the laminated film of the present embodiment.
  • the same components as those shown in the already explained figures are designated by the same reference numerals as in the case of the already explained figures, and detailed description thereof will be omitted.
  • FIG. 3 is a cross-sectional view schematically showing still another example of the laminated film of the present embodiment.
  • the laminated film 3 shown here is configured by laminating a base material layer 11 and a flexible layer 12 in the thickness direction thereof.
  • the laminated film 3 further includes an intermediate layer 13 on the flexible layer 12 side of the base material layer 11, and the intermediate layer 13 is arranged on the side opposite to the base material layer 11 of the flexible layer 12.
  • the laminated film 3 further includes an inner layer 14 on the side of the intermediate layer 13 opposite to the flexible layer 12 side. That is, the laminated film 3 is configured by laminating the base material layer 11, the flexible layer 12, the intermediate layer 13, and the inner layer 14 in this order in the thickness direction.
  • the laminated film 4 can be regarded as the same as the laminated film 1 shown in FIG. 1 except that the first flexible layer 121, the first intermediate layer 131, and the second intermediate layer 132 are not provided.
  • the flexible layer 12 in the laminated film 4 is considered to correspond to the second flexible layer 122 in the laminated film 1, and is the same as the second flexible layer 122.
  • examples of the layers included in the laminated films 1 to 4 include a base material layer, a flexible layer (first flexible layer, second flexible layer), an intermediate layer (first intermediate layer, second intermediate layer), and an inner layer.
  • the laminated films 1 to 4 may include other layers other than these.
  • the type, number of layers, and arrangement position of the other layers can be arbitrarily selected according to the purpose.
  • An example of the other layer is an adhesive layer for adhering two adjacent layers.
  • the number of layers of the intermediate layer included in the laminated films 1 to 3 is 2 at the maximum, but when the laminated film of the present embodiment includes the intermediate layer, the number of layers is 3 or more. May be good.
  • the laminated film of the present embodiment includes one or more intermediate layers which are water vapor barrier layers
  • the total thickness of the intermediate layers which are water vapor barrier layers is 8 to 8 regardless of the number of layers. It may be any of 180 ⁇ m, 10 to 140 ⁇ m, and 30 to 105 ⁇ m.
  • the total thickness of the intermediate layers which are oxygen barrier layers is 10 to 10 regardless of the number of layers. It may be any of 140 ⁇ m, 15 to 130 ⁇ m, and 20 to 120 ⁇ m.
  • the second surface 1b of the laminated film 1 is adhered to one surface of the cover film 8 (sometimes referred to as the "first surface” in the present specification) 8a.
  • the laminated film 1 projects toward the first surface 1a side in a part of the region, and the second surface 1b of the projecting portion 109 is adhered to the first surface 8a of the cover film 8.
  • the storage portion 10a is formed by the second surface 1b of the laminated film 1 and the first surface 8a of the cover film 8.
  • the package 10 shown in FIGS. 5 and 6 includes eight storage units 10a, but the number of storage units in the package body of the present embodiment is not limited to this, and may be two or more. ..
  • a first intermediate layer is formed on the base material layer, and a base material layer-first intermediate layer laminate is formed.
  • the inner layer-second intermediate layer laminate was prepared by the same method.
  • the base material is obtained by extruding and laminating the low-density polyethylene on the first intermediate layer side of the base material layer-first intermediate layer laminate and the second intermediate layer side of the inner layer-second intermediate layer laminate.
  • the layer-first intermediate layer laminate, the flexible layer, and the inner layer-second intermediate layer laminate were laminated in this order.
  • a first flexible layer was formed on the base material layer, and a base material layer-first flexible layer laminate was produced.
  • the base material layer (thickness 80 ⁇ m), the first flexible layer (thickness 30 ⁇ m), the first intermediate layer (thickness 30 ⁇ m), the second flexible layer (thickness 30 ⁇ m), and the second intermediate layer (thickness 30 ⁇ m).
  • the inner layer (thickness 100 ⁇ m) were laminated in this order to produce a laminated film (thickness 300 ⁇ m).
  • a laminated film (thickness 318 ⁇ m) composed of a base material layer (thickness 76 ⁇ m), a flexible layer (thickness 51 ⁇ m), and an inner layer (thickness 191 ⁇ m) laminated in this order in this order is formed.
  • the polyvinylidene chloride latex is applied to the exposed surface of the flexible layer in the inner layer-flexible layer laminate and dried to form a base material layer on the flexible layer, and the inner layer-flexible layer laminate and the flexible layer laminate are formed.
  • the base material layer was laminated.
  • a laminated film (thickness 280 ⁇ m) composed of a base material layer (thickness 50 ⁇ m), a flexible layer (thickness 30 ⁇ m), and an inner layer (thickness 200 ⁇ m) laminated in this order in this order is formed.
  • a test piece was prepared by the same method as in Example 1. More specifically, a laminated body is produced by the same method as in the case of Example 1 except that the laminated film obtained above is used, and the thickness of the laminated film is increased with respect to the laminated film in the laminated body. In the vertical direction, a slit reaching from the first surface of the base material layer to the inner layer (in other words, penetrating the flexible layer in the thickness direction) was formed by using a slit blade. At this time, the temperature of the slit blade was set to 130 ° C. Next, the laminated body was punched out to a size of about 40 mm in width and 100 mm in length to obtain a test piece.
  • the polyvinylidene chloride latex was applied to one surface of the polyvinyl chloride film and dried to form an intermediate layer on the substrate layer to prepare a substrate layer-intermediate layer laminate.
  • the base layer-intermediate layer is formed by extruding and laminating the low-density polyethylene on one surface side of another polyvinyl chloride film (inner layer) and on the intermediate layer side of the base layer-intermediate layer laminate.
  • the laminate, the flexible layer, and the inner layer were laminated in this order.
  • the base material layer (thickness 80 ⁇ m), the intermediate layer (thickness 50 ⁇ m), the flexible layer (thickness 20 ⁇ m), and the inner layer (thickness 80 ⁇ m) are laminated in this order in this order.
  • a laminated film (thickness 230 ⁇ m) was manufactured.
  • the low-density polyethylene is extruded and laminated on the second intermediate layer side of the inner layer-second flexible layer-second intermediate layer laminate and on the first intermediate layer side of the base material layer-first intermediate layer laminate.
  • the inner layer-the second flexible layer-the second intermediate layer laminate, the first flexible layer, and the base material layer-the first intermediate layer laminate were laminated in this order.
  • the base material layer (thickness 100 ⁇ m), the first intermediate layer (thickness 30 ⁇ m), the first flexible layer (thickness 30 ⁇ m), the second intermediate layer (thickness 30 ⁇ m), and the second flexible layer (thickness 30 ⁇ m).
  • the inner layer (thickness 80 ⁇ m) were laminated in this order to produce a laminated film (thickness 300 ⁇ m).
  • a test piece was prepared by the same method as in Example 1. More specifically, a laminated body is produced by the same method as in the case of Example 1 except that the laminated film obtained above is used, and the thickness of the laminated film is increased with respect to the laminated film in the laminated body. In the vertical direction, a slit reaching from the first surface of the base material layer to the inner layer (in other words, penetrating the first flexible layer and the second flexible layer in the thickness direction) was formed by using a slit blade. At this time, the temperature of the slit blade was set to 130 ° C.
  • the laminated body was punched out to a size of about 40 mm in width and 100 mm in length to obtain a test piece.
  • a test piece having slits formed in the entire width direction was produced.
  • the separability was evaluated by the same method as in the case of Example 1. The results are shown in Table 2.
  • a first flexible layer was formed on the base material layer, and a base material layer-first flexible layer laminate was prepared. Further, the inner layer-third flexible layer laminate was prepared by the same method.
  • the polyvinylidene chloride latex is applied to the exposed surface of the first flexible layer in the base material layer-first flexible layer laminate and dried to form a first intermediate layer on the first flexible layer.
  • the base material layer-the first flexible layer-the first intermediate layer laminate was prepared.
  • the exposed surface of the first intermediate layer in the base material layer-the first flexible layer-the first intermediate layer laminate and the exposed surface of the second intermediate layer in the inner layer-the third flexible layer-the second intermediate layer laminate By extruding and laminating the low-density polyethylene, the base material layer-the first flexible layer-the first intermediate layer laminate, the second flexible layer, and the inner layer-the third flexible layer-the second intermediate layer laminate Were laminated in this order.
  • the base material layer (thickness 80 ⁇ m), the first flexible layer (thickness 30 ⁇ m), the first intermediate layer (thickness 30 ⁇ m), the second flexible layer (thickness 30 ⁇ m), and the second intermediate layer (thickness 30 ⁇ m).
  • the third flexible layer (thickness 30 ⁇ m) and the inner layer (thickness 100 ⁇ m) were laminated in this order to produce a laminated film (thickness 330 ⁇ m).
  • the laminated body was punched out to a size of about 40 mm in width and 100 mm in length to obtain a test piece.
  • a test piece having slits formed in the entire width direction was produced.
  • the separability was evaluated by the same method as in the case of Example 1. The results are shown in Table 2.
  • the laminated films (test pieces) of Examples 1 to 5 had high splittability.
  • the distance D from the first surface of the base material layer of the flexible layer arranged farthest from the base material layer is 0. It was 57T or less (0.29T to 0.57T).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
PCT/JP2021/020933 2020-06-08 2021-06-02 積層フィルム及び包装体 Ceased WO2021251225A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022530496A JP7294539B2 (ja) 2020-06-08 2021-06-02 包装体

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020099300 2020-06-08
JP2020-099300 2020-06-08

Publications (1)

Publication Number Publication Date
WO2021251225A1 true WO2021251225A1 (ja) 2021-12-16

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PCT/JP2021/020933 Ceased WO2021251225A1 (ja) 2020-06-08 2021-06-02 積層フィルム及び包装体

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022027157A (ja) * 2020-07-31 2022-02-10 旭化成株式会社 プレススルーパック包装シート

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01161469U (https=) * 1988-04-28 1989-11-09
JP2001031136A (ja) * 1999-07-16 2001-02-06 Toppan Printing Co Ltd Ｐｔｐ包装体
JP2014043089A (ja) * 2012-08-02 2014-03-13 Mitsubishi Plastics Inc Ｐｔｐ用多層シート
WO2014045964A1 (ja) * 2012-09-19 2014-03-27 住友ベークライト株式会社 薬剤包装用シート、および薬剤包装体
JP2020079102A (ja) * 2018-11-12 2020-05-28 株式会社タケトモ 包装材

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015194644A1 (ja) 2014-06-18 2015-12-23 アステラス製薬株式会社 ブリスターパック用積層体、及びそれを用いたブリスターパック

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01161469U (https=) * 1988-04-28 1989-11-09
JP2001031136A (ja) * 1999-07-16 2001-02-06 Toppan Printing Co Ltd Ｐｔｐ包装体
JP2014043089A (ja) * 2012-08-02 2014-03-13 Mitsubishi Plastics Inc Ｐｔｐ用多層シート
WO2014045964A1 (ja) * 2012-09-19 2014-03-27 住友ベークライト株式会社 薬剤包装用シート、および薬剤包装体
JP2020079102A (ja) * 2018-11-12 2020-05-28 株式会社タケトモ 包装材

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2022027157A (ja) * 2020-07-31 2022-02-10 旭化成株式会社 プレススルーパック包装シート
JP7551973B2 (ja) 2020-07-31 2024-09-18 Ｓｂパックス株式会社 プレススルーパック包装シート

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JP7294539B2 (ja) 2023-06-20

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