WO2016181827A1 - Stratifié pour emballage ayant une couche d'absorption d'ultraviolet - Google Patents

Stratifié pour emballage ayant une couche d'absorption d'ultraviolet Download PDF

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Publication number
WO2016181827A1
WO2016181827A1 PCT/JP2016/063063 JP2016063063W WO2016181827A1 WO 2016181827 A1 WO2016181827 A1 WO 2016181827A1 JP 2016063063 W JP2016063063 W JP 2016063063W WO 2016181827 A1 WO2016181827 A1 WO 2016181827A1
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WO
WIPO (PCT)
Prior art keywords
layer
polyolefin
laminate
packaging
ultraviolet
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Application number
PCT/JP2016/063063
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English (en)
Japanese (ja)
Inventor
恭平 高橋
白根　隆志
山本　光
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共同印刷株式会社
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Publication date
Application filed by 共同印刷株式会社 filed Critical 共同印刷株式会社
Priority to JP2017517870A priority Critical patent/JP6789213B2/ja
Publication of WO2016181827A1 publication Critical patent/WO2016181827A1/fr

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    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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

  • the present invention relates to a packaging laminate having an ultraviolet absorbing layer.
  • the present invention relates to a transparent laminate for laminated tubes having an ultraviolet absorbing layer that can suppress bleed out of an organic ultraviolet absorber and can be easily manufactured.
  • a package with an ultraviolet absorbing layer for preventing the contents from being deteriorated by ultraviolet rays is conventionally known.
  • an application type package with an ultraviolet absorbing layer using a coating layer containing an ultraviolet absorber and a kneaded type package with an ultraviolet absorbing layer in which an ultraviolet absorber is kneaded in a resin binder The body can be mentioned.
  • Patent Document 1 discloses a package including polyethylene and an ultraviolet absorber in the outermost heat seal layer.
  • Patent Document 3 discloses a laminate including (a) a layer made of a thermoplastic resin and (b) a layer made of a thermoplastic resin containing an ultraviolet absorber. Here, (b) Sandwich layers.
  • JP 2002-068222 A Japanese Patent Laid-Open No. 9-239889 Japanese Patent Laid-Open No. 7-040954
  • the oxygen atom-containing thermoplastic resin used for the migration blocking layer of the ultraviolet absorber is expensive. Moreover, it is necessary to adhere
  • the easy-adhesive resin used at this time is relatively difficult to manufacture because it involves complicated processing such as that the mold cannot be easily washed. Furthermore, when this laminated body is used for a packaging body and a heat seal layer is laminated on the surface, the number of laminated layers also increases.
  • the laminate described in Patent Document 3 also does not have heat sealability because a polyester resin or the like is used for the (a) layer made of a thermoplastic resin, and the laminate is used on the surface to be used for a package. If it is going to laminate
  • ⁇ Aspect 5 The packaging laminate according to any one of aspects 1 to 4, wherein an adhesive for dry lamination does not exist between the first polyolefin layer, the ultraviolet absorbing layer, and the second polyolefin layer. .
  • ⁇ Aspect 6 The laminate strength of the first polyolefin layer and the ultraviolet absorbing layer, and the laminate strength of the ultraviolet absorbing layer and the second polyolefin layer are 5.0 N / 15 mm or more, respectively.
  • ⁇ Aspect 7 The packaging laminate according to any one of aspects 1 to 6, further comprising a base material layer and a heat seal layer in this order, which are laminated on the second polyolefin layer.
  • ⁇ Aspect 8 A packaging laminate, wherein the base material layer is sandwiched between the second polyolefin layers of the two packaging laminates according to any one of aspects 1 to 6.
  • ⁇ Aspect 9 The laminate for packaging according to aspect 7 or 8, wherein the light transmittance at a wavelength of 380 nm is 10% or less and the light transmittance at a wavelength of 450 nm is 75% or more.
  • ⁇ Aspect 10 A tube packaging body formed using the packaging laminate according to any one of Embodiments 7 to 9.
  • the present invention it is possible to provide a packaging laminate having an ultraviolet absorbing layer that can suppress bleed-out of an organic ultraviolet absorber and can be easily manufactured.
  • FIG. 1 illustrates the packaging laminate of the present invention.
  • the packaging laminate of the present invention includes a first polyolefin layer, an ultraviolet absorbing layer containing an organic ultraviolet absorber and polyolefin, and a second polyolefin layer in this order.
  • the thickness of each of the first polyolefin layer, the ultraviolet absorbing layer, and the second polyolefin layer is more than 25 ⁇ m, and the content of the organic ultraviolet absorber is 0.01 with respect to the ultraviolet absorbing layer. ⁇ 2.0% by weight.
  • the ultraviolet absorbing layer is made relatively thick while the bleed-out is suppressed by reducing the concentration of the ultraviolet absorber contained in the ultraviolet absorbing layer, and the ultraviolet absorbing performance is not lowered.
  • the polyolefin layer can function as an ultraviolet absorber migration-preventing layer.
  • the laminated body of this invention can raise the adhesive strength between these layers by making the density
  • the laminate of the present invention is preferably transparent, whereby the inside of the package produced using this laminate can be visually confirmed.
  • the laminate of the present invention has a light transmittance at a wavelength of 450 nm of 75% or more, 80% or more, or 85% or more when measured with a spectrophotometer U-4000 (Hitachi High-Technologies Corporation). is there.
  • the laminate of the present invention does not transmit ultraviolet rays.
  • the laminate of the present invention has a light transmittance at a wavelength of 380 nm of 20% or less, 10% or less, or 7% or less when measured with a spectrophotometer U-4000 (Hitachi High-Technologies Corporation). is there.
  • the laminate of the present invention has a light transmittance at a wavelength of 350 nm of 5.0% or less, 3.0% or less when measured with a spectrophotometer U-4000 (Hitachi High-Technologies Corporation) Or 1.0% or less.
  • a polyurethane-based adhesive, an acrylic resin-based adhesive, an epoxy resin-based adhesive, and a silicone resin-based adhesive are interposed between the first polyolefin layer, the ultraviolet absorbing layer, and the second polyolefin layer. Preferably it is not present.
  • the laminate strength between the first polyolefin layer and the ultraviolet absorbing layer, and the laminate strength between the ultraviolet absorbing layer and the second polyolefin layer are measured by using a graph VE10D (Toyo Seiki Seisakusho Co., Ltd.) by the T-shaped peel test method.
  • a graph VE10D Toyo Seiki Seisakusho Co., Ltd.
  • it is preferably 5.0 N / 15 mm or more, 7.0 N / 15 mm or more, or 10.0 N / 15 mm or more, respectively.
  • the laminate of the present invention may further have a base material layer on the second polyolefin layer side in order to give an appropriate stiffness as a package.
  • the laminated body of this invention may have a heat seal layer in the opposite surface to the 2nd polyolefin layer of a base material layer.
  • the base material layer may be sandwiched between two laminates of the present invention.
  • this laminate also has high ultraviolet absorptivity, it does not generate bleed-out, can be easily formed by giving a waist to the package and heat-sealing it in a cylindrical shape. It is advantageous.
  • the laminate of the present invention may have other layers as long as the effects of the present invention are not substantially impaired, for example, an adhesive layer, a printed layer, an anchor coat layer, a primer layer, etc. Also good.
  • the laminate of the present invention may have a total thickness of all layers of 100 ⁇ m or more, 150 ⁇ m or more, 200 ⁇ m or more, 250 ⁇ m or more, or 300 ⁇ m or more, and is 800 ⁇ m or less, 600 ⁇ m or less, or 500 ⁇ m or less. There may be.
  • FIG. 1A illustrates a laminate according to one embodiment of the present invention.
  • This laminated body (10) is comprised from the 1st polyolefin layer (1), the ultraviolet absorption layer (3), and the 2nd polyolefin layer (2).
  • FIG. 1 (b) illustrates a laminate (10) of one embodiment of the present invention comprising a substrate layer (4) and a heat seal layer (5).
  • FIG. 1 (c) illustrates a laminate (10) of one embodiment of the present invention in which the substrate layer (4) is sandwiched by the two laminates of FIG. 1 (a). . This is also considered that the laminated body of Fig.1 (a) is used as the heat seal layer (5) of FIG.1 (b).
  • the ultraviolet absorbing layer used in the laminate of the present invention contains an organic ultraviolet absorber and polyolefin. This layer has a thickness of more than 25 ⁇ m, and the content of the organic ultraviolet absorber is 0.01 to 2.0% by weight in this layer.
  • the ultraviolet absorbing performance can be maintained by reducing the concentration of the ultraviolet absorber to suppress bleed-out and securing the thickness.
  • the thickness of this layer may be, for example, 30 ⁇ m or more, 40 ⁇ m or more, 50 ⁇ m or more, 60 ⁇ m or more, 70 ⁇ m or more, 100 ⁇ m or more, or 130 ⁇ m or more, or 300 ⁇ m or less, 250 ⁇ m or less, or 200 ⁇ m or less.
  • the thickness described here means the total thickness thereof.
  • the content of the organic ultraviolet absorber may be, for example, 0.01% by weight or more, 0.05% by weight or more, 0.1% by weight or more, 0.25% by weight or more, or 0.5% by weight or more. It may be 2.0% by weight or less, 1.8% by weight or less, 1.5% by weight or less, 1.2% by weight or less, or 1.0% by weight or less.
  • the content of the organic ultraviolet absorber is particularly 0.10% by weight to 1.5% by weight, and particularly preferably 0.25% by weight to 1.0% by weight.
  • the organic ultraviolet absorber is not particularly limited as long as it is an organic compound that absorbs ultraviolet rays, but benzotriazole compounds, benzophenone compounds, triazine compounds, cyanoacrylate compounds, oxanilide compounds, salicylate compounds, formamidines. And benzotriazole compounds can be used.
  • polyolefins examples include polyolefins suitable for forming an ultraviolet absorbing layer by sandwich lamination, and particularly polyethylene and polypropylene.
  • Polyethylene includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid.
  • EMA ethylene-ethyl acrylate copolymer
  • EMA ethylene-methyl acrylate copolymer
  • EVA ethylene vinyl acetate copolymer
  • carboxylic acid modified polyethylene carboxylic acid modified ethylene vinyl acetate
  • examples include copolymers, ionomers, and derivatives thereof, and mixtures thereof.
  • polypropylene include polypropylene (PP) homopolymer, random polypropylene (random PP), block polypropylene (block PP), chlorinated polypropylene, carboxylic acid-modified polypropylene, and derivatives thereof, and mixtures thereof.
  • the ultraviolet absorbing layer may contain other additives or may contain an inorganic ultraviolet absorber as long as the effects of the present invention are not substantially impaired.
  • the first polyolefin layer and the second polyolefin layer both have a thickness of more than 25 ⁇ m, thereby suppressing bleeding out of the ultraviolet absorber.
  • Both the first polyolefin layer and the second polyolefin layer are preferably heat-sealable.
  • the thickness is more than 25 ⁇ m because the film formation is easily stabilized.
  • the thickness of the first polyolefin layer and the second polyolefin layer used in the present invention is preferably more than 25 ⁇ m.
  • polyolefin used in these layers examples include the same types as the polyolefin that can be used in the ultraviolet absorbing layer.
  • the polyolefin used in the first polyolefin layer and the second polyolefin layer is the same type of polyolefin as the polyolefin used in the ultraviolet absorbing layer.
  • the polyolefin used in the first polyolefin layer and the second polyolefin layer is not an oxygen atom-containing polyolefin.
  • the polyolefin used in the first polyolefin layer and the second polyolefin layer has an ethylene group repeating unit of 50 mol% or more, 60 mol% or more, 70 mol% or more, 80 mol% or more, or 90 mol in the main chain of the polymer.
  • % which is a resin containing 30 mol% or more, 40 mol% or more, 50 mol% or more, 60 mol% or more, 70 mol% or more, or 80 mol% or more of a repeating unit of propylene group in the main chain of the polymer.
  • the thickness of the base material layer is not particularly limited as long as the above-described object can be achieved, but may be, for example, 5 ⁇ m or more, 8 ⁇ m or more, or 10 ⁇ m or more, and 100 ⁇ m or less, 50 ⁇ m or less, 30 ⁇ m or less, or 20 ⁇ m or less It may be.
  • the heat seal layers are not particularly limited as long as they can be bonded by being pressed against each other and brought to a temperature in the range of 80 to 250 ° C.
  • it is not particularly limited as long as it is a layer that can be heat-sealed for 1.0 second under conditions of 140 ° C. and 0.2 MPa and can be bonded with strength useful as a package.
  • heat seal layer examples include a polyolefin layer, and the same types as those of the polyolefin that can be used in the ultraviolet absorbing layer.
  • the heat seal layer is preferably capable of printing on its surface.
  • the printing is preferably performed with UV ink.
  • cello tape registered trademark
  • the printed part is preferably not peeled off.
  • Printing can be performed by, for example, flexographic printing, resin letterpress printing, or the like.
  • a batch kneader such as a kneader, a Banbury mixer, a mixing roll, or a continuous kneader such as a biaxial kneader can be used.
  • a batch kneader such as a kneader, a Banbury mixer, a mixing roll, or a continuous kneader such as a biaxial kneader
  • it can be performed at 100 ° C. or higher, 120 ° C. or higher, or 140 ° C. or higher, and can be kneaded at a temperature of 220 ° C. or lower, 200 ° C. or lower, or 180 ° C. or lower. it can.
  • the above-described packaging laminate having upper and lower surfaces that are heat-sealable is formed into a cylindrical shape, and the cylindrical formed body is formed by heat-sealing the upper and lower layers. And the both ends of the obtained cylindrical molded object can be sealed, and a package can be obtained.
  • a shoulder portion may be formed on one side of the cylindrical molded body so that a cap can be attached, and components constituting the shoulder portion may be attached to the cylindrical molded body.
  • the package of the present invention can contain contents such as solid, liquid, gel and the like.
  • the package of the present invention can contain contents such as foods, chemicals, cosmetics, and detergents, and particularly can contain cosmetics.
  • an ultraviolet absorbing layer of 70 ⁇ m or less it was formed by sandwich lamination with the first and second polyolefin layers.
  • the laminated body having the ultraviolet absorbing layer is formed by extruding the ultraviolet absorbing layer once to the second polyolefin layer, and finally the laminated body and the first polyolefin layer are formed. Then, the molten resin composition containing the ultraviolet absorber and polyolefin was sandwich-laminated to ensure the thickness of the ultraviolet absorbing layer.
  • the amount of the dry laminate adhesive applied was 3.5 g / m 2 .
  • Example 4 instead of the heat seal layer, a laminate in which an ultraviolet absorbing layer was sandwich-laminated with first and second polyolefin layers was used.
  • the laminated body of Example 4 includes two ultraviolet absorbing layers, but the ultraviolet absorber concentration is the same for the two ultraviolet absorbing layers.
  • a pattern was printed by flexographic printing using UV ink to form a tube-shaped package. The pattern is printed on the heat seal layer in Examples 1 to 3, Examples 5 to 6 and Comparative Example 1; in Examples 4 and 7, it is printed on the first polyolefin layer; In 2, it went to the ultraviolet absorbing layer.
  • the laminated body of Example 7 was produced, without using PET film which is a base material layer.
  • ⁇ when the transmittance is 3% or less For a wavelength of 350 nm, ⁇ when the transmittance is 3% or less, ⁇ when the transmittance is more than 3% and 5% or less, and x when the transmittance is more than 5%;
  • ⁇ when the transmittance is more than 10% and 20% or less
  • ⁇ when the transmittance is more than 20%
  • x for a wavelength of 450 nm, the transmittance is 75%
  • ⁇ when the transmittance is more than 10% and 20% or less
  • ⁇ when the transmittance is more than 20%
  • the laminate strength of the first polyolefin layer, the ultraviolet absorbing layer and the second polyolefin layer was measured using a T-peeling test method using a strograph VE10D (Toyo Seiki Seisakusho Co., Ltd.). Using, the distance between the gripping jigs was 50 mm, and the tensile speed was 300 mm / min.
  • the laminate strength was 5.0 N / 15 mm or more, the interlayer strength was evaluated as ⁇ , and when the laminate strength was less than 5.0 N / 15 mm, the interlayer strength was evaluated as x.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)

Abstract

La présente invention concerne un stratifié pour un emballage ayant une couche d'absorption d'ultraviolet, qui peut être produit facilement et qui est capable de supprimer l'écoulement d'un absorbant d'ultraviolet organique. La présente invention concerne un stratifié pour un emballage (10), qui comprend séquentiellement une première couche de polyoléfine (1), une couche d'absorption d'ultraviolet (3) contenant un absorbant d'ultraviolet organique et une polyoléfine, et une seconde couche de polyoléfine (2) dans cet ordre, et les épaisseurs de la première couche de polyoléfine (1), de la couche d'absorption d'ultraviolet (3) et de la seconde couche de polyoléfine (2) étant supérieures à 25 μm, respectivement ; et la teneur de l'absorbant d'ultraviolet organique est 0,01-2,0 % en poids par rapport à la couche d'absorption d'ultraviolet (3).
PCT/JP2016/063063 2015-05-12 2016-04-26 Stratifié pour emballage ayant une couche d'absorption d'ultraviolet WO2016181827A1 (fr)

Priority Applications (1)

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JP2017517870A JP6789213B2 (ja) 2015-05-12 2016-04-26 紫外線吸収層を有する包装用積層体

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JP2015097332 2015-05-12
JP2015-097332 2015-05-12

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WO2016181827A1 true WO2016181827A1 (fr) 2016-11-17

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US20240125978A1 (en) * 2021-02-12 2024-04-18 3M Innovative Properties Company Optical film and package

Citations (5)

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JP2003292694A (ja) * 2002-04-02 2003-10-15 Tosoh Corp 押出ラミネート用エチレン系樹脂組成物、及びそれを用いた積層体、並びに積層体の製造方法
JP2004262030A (ja) * 2003-02-28 2004-09-24 Mitsubishi Chem Mkv Co 農業用多層フィルム
JP2006150975A (ja) * 2005-12-16 2006-06-15 Sankootekku:Kk 装飾シート及び装飾シートの製造方法
JP2012157703A (ja) * 2012-03-02 2012-08-23 Terumo Corp 積層シートおよびそれを用いた包装容器
JP2015066800A (ja) * 2013-09-30 2015-04-13 大日本印刷株式会社 包装材用積層体

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JP2005305745A (ja) * 2004-04-20 2005-11-04 Toppan Printing Co Ltd 紫外線吸収フィルムおよびそのフィルムを用いた包装体
JP2007302328A (ja) * 2006-05-15 2007-11-22 Terumo Corp 積層体およびそれを用いた包装袋
JP5066962B2 (ja) * 2007-03-22 2012-11-07 凸版印刷株式会社 積層材料および包装体
JP2009023100A (ja) * 2007-07-17 2009-02-05 Toppan Printing Co Ltd 紫外線を吸収し可視光線を透過する積層材料と該積層材料を用いた包装体およびプレススルーパッケージ並びにシュリンクラベル
JP2012183659A (ja) * 2011-03-03 2012-09-27 Toppan Printing Co Ltd 紫外線遮断性を有する透明包装袋
JP2014140973A (ja) * 2013-01-22 2014-08-07 Dainippon Printing Co Ltd 医療用包装材料

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2003292694A (ja) * 2002-04-02 2003-10-15 Tosoh Corp 押出ラミネート用エチレン系樹脂組成物、及びそれを用いた積層体、並びに積層体の製造方法
JP2004262030A (ja) * 2003-02-28 2004-09-24 Mitsubishi Chem Mkv Co 農業用多層フィルム
JP2006150975A (ja) * 2005-12-16 2006-06-15 Sankootekku:Kk 装飾シート及び装飾シートの製造方法
JP2012157703A (ja) * 2012-03-02 2012-08-23 Terumo Corp 積層シートおよびそれを用いた包装容器
JP2015066800A (ja) * 2013-09-30 2015-04-13 大日本印刷株式会社 包装材用積層体

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JPWO2016181827A1 (ja) 2018-03-01

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