WO2016013595A1 - Sachet d'emballage facilement pelable - Google Patents

Sachet d'emballage facilement pelable Download PDF

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Publication number
WO2016013595A1
WO2016013595A1 PCT/JP2015/070889 JP2015070889W WO2016013595A1 WO 2016013595 A1 WO2016013595 A1 WO 2016013595A1 JP 2015070889 W JP2015070889 W JP 2015070889W WO 2016013595 A1 WO2016013595 A1 WO 2016013595A1
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Prior art keywords
adhesive layer
packaging bag
thermal adhesive
maleic anhydride
film
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PCT/JP2015/070889
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English (en)
Japanese (ja)
Inventor
奈月 坂本
萩尾　由美子
晋久 岩崎
愛美 西
祐幸 佐野
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共同印刷株式会社
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Priority to JP2016535961A priority Critical patent/JP6604947B2/ja
Publication of WO2016013595A1 publication Critical patent/WO2016013595A1/fr

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    • 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/28—Articles or materials wholly enclosed in composite wrappers, i.e. wrappers formed by associating or interconnecting two or more sheets or blanks
    • B65D75/30—Articles or materials enclosed between two opposed sheets or blanks having their margins united, e.g. by pressure-sensitive adhesive, crimping, heat-sealing, or welding
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants

Definitions

  • the present invention relates to an easy-peeling packaging bag in which a non-adsorbing film that does not adsorb the volatile components of the contents and an absorptive film are heat-sealed.
  • a patch that percutaneously absorbs medicinal ingredients is known.
  • Such a patch is provided with a pressure-sensitive adhesive layer containing a medicinal component on one side of a substrate made of a plastic film such as a polyolefin resin or a non-woven fabric, and this pressure-sensitive adhesive layer is peelable before use. It is covered with a film. It is known that such a patch is stored in a packaging bag formed of a non-adsorbing film that does not adsorb medicinal ingredients in order to prevent volatilization of medicinal ingredients.
  • non-adsorptive films are usually difficult to heat seal, in order to obtain a packaging bag using this film, it is necessary to bond the films together with an adhesive. It is not appropriate because the adhesive can adversely affect the contents.
  • Patent Document 1 discloses a non-adsorptive film having a heat-sealable non-adsorptive sealant film. According to the non-adsorbing film described in Patent Document 1, a packaging bag that can be formed by heat sealing between non-adsorbing films (non-adsorbing sealant films) can be obtained.
  • the present inventors have bonded the non-adsorbent film described in Patent Document 1 with an absorbent film containing the absorbent in a thermoplastic resin binder, thereby eliminating the need to separately enclose the absorbent. Began to review.
  • the heat-adhesive layer of the non-adsorbing film has a medicinal component. Because it is composed of a polymer alloy of ethylene-vinyl alcohol copolymer, which is a resin that does not adsorb oxygen, and maleic anhydride-modified polyolefin resin, and the heat-adhesive layer of the oxygen-absorbing film is composed of ordinary polyolefin resin It was found that these cannot be simply bonded by heat sealing.
  • the packaging bag may be required to have an easy peel property, and a conventionally known non-adsorptive film thermal adhesive layer resin and oxygen-absorbing film thermal adhesive layer resin are appropriately selected. Even if heat sealing was possible, it was difficult to obtain a packaging bag having heat sealing strength suitable for easy peel.
  • the present invention is a packaging bag that does not need to enclose an absorbent, does not adsorb the volatile components of the contents, and can prevent deterioration due to oxygen, moisture, etc., and has an appropriate heat seal strength.
  • An object of the present invention is to provide a packaging bag having easy peel properties. Furthermore, an object of the present invention is to provide a packaging bag that can be easily produced, among such packaging bags.
  • the packaging bag of the present invention having the following configuration can solve the above problems unexpectedly. That is, the present invention is as follows: ⁇ 1> a non-adsorbent film comprising a first base layer and a first thermal adhesive layer, and an absorbent film comprising a second base layer, an absorbent layer and a second thermal adhesive layer, 1 is a packaging bag formed by heat-sealing with the first thermal adhesive layer and the second thermal adhesive layer,
  • the first thermal adhesive layer contains EVOH and maleic anhydride-modified polyolefin resin
  • the second thermal adhesive layer contains a maleic anhydride-modified polyolefin resin
  • the first thermal adhesive layer and the second thermal adhesive layer comply with a T-type peel test according to JIS Z0238.
  • the first thermal adhesive layer and the second thermal adhesive layer can be heat-sealed with the heat seal strength over a temperature range of at least 10 ° C. of a temperature range of 80 ° C. to 280 ° C.
  • Packaging bag as described in.
  • the second thermal adhesive layer contains 20 wt% to 90 wt% maleic anhydride-modified LDPE and 80 wt% to 10 wt% LLDPE.
  • the second thermal adhesive layer contains maleic anhydride-modified LDPE and maleic anhydride-modified LLDPE in a total amount of 20% to 60% by weight, and a total of LLDPE and PP in a range of 80% to 40%.
  • the first thermal adhesive layer contains 70 wt% to 90 wt% EVOH and 30 wt% to 10 wt% maleic anhydride-modified polyolefin resin, ⁇ 1> to ⁇ 8>
  • the packaging bag as described in any one of. ⁇ 10>
  • the packaging bag of the present invention it is not necessary to enclose an absorbent separately, it does not adsorb the active ingredients of the contents, can prevent deterioration due to oxygen, moisture, etc., and further has an easy peel property, The contents can be taken out easily. Moreover, according to the specific embodiment of this invention, a packaging bag with easy production can be obtained.
  • the packaging bag of the present invention has a first heat-adhesive layer of a non-adsorbent film that does not adsorb the volatile components of the contents, and a second heat-adhesive layer of an absorbent film that absorbs components that cause deterioration of the contents. It is formed by heat sealing.
  • the heat seal strength is in the range of 1.0 to 7.0 N / 15 mm when the tensile speed is measured at 300 mm / min in accordance with a T-type peel test according to JIS Z0238. When the heat seal strength is within this range, it can have an easy peel property.
  • the heat seal strength is preferably in the range of 1.5 to 6.0 N / 15 mm, and more preferably in the range of 2.0 to 5.5 N / 15 mm.
  • the heat seal strength in such a range is 80 ° C. to 280 ° C., preferably Is preferably able to be expressed over a temperature range of at least 10 ° C within the temperature range of 130 ° C to 220 ° C, more preferably 140 ° C to 210 ° C. If this range is 10 degreeC or more, when producing this packaging bag, a yield can be improved. Therefore, this temperature range is preferably as wide as possible, and is particularly preferably 20 ° C. or higher.
  • the non-adsorptive film used in the packaging bag of the present invention comprises a first base layer and a first thermal adhesive layer containing an ethylene-vinyl alcohol copolymer (EVOH) and a maleic anhydride-modified polyolefin resin.
  • EVOH ethylene-vinyl alcohol copolymer
  • maleic anhydride-modified polyolefin resin prepared.
  • non-adsorbing means that ethylene-vinyl alcohol copolymer (EVOH) is contained in an amount of 60% by weight, 70% by weight, or 80% by weight, so that menthol, limonene, methyl salicylate, camphor It means a property that volatile components such as tocopherol, wasabi, mustard, mustard and other food fragrance components are hardly adsorbed, and in particular, it does not substantially adsorb and can maintain the fragrance components inside the packaging container.
  • non-adsorbing means that the weight value (mg) of a menthol adsorbed by a film exposed to menthol vapor for 1 week is below the measurement limit.
  • the amount of menthol adsorbed was determined by exposing the non-adsorbable film (100 mm ⁇ 100 mm) to menthol vapor generated at 40 ° C. for one week, extracting the menthol adsorbed on the film with methyl ethyl ketone, and then using gas chromatography. Quantify. In this case, what cannot be quantified in a trace amount (less than 0.05 mg) is assumed to be below the measurement limit.
  • the first thermal adhesive layer preferably contains 70% to 90% by weight of EVOH and 30% to 10% by weight of maleic anhydride-modified polyolefin resin, and particularly preferably 82% to 90% by weight. EVOH and 18% to 10% by weight of maleic anhydride-modified polyolefin resin are contained.
  • the first thermal adhesive layer when the EVOH content is 70% by weight or more, the non-adsorption property of the film is good, and when the EVOH content is 90% by weight or less, the heat sealability of the film is good. It becomes.
  • the first adhesive layer may contain other thermoplastic resins other than EVOH and maleic anhydride-modified polyolefin resin.
  • EVOH is a saponified ethylene-vinyl ester copolymer, and the content of ethylene units is not particularly limited, but is selected in the range of 10 mol% to 70 mol%, preferably 15 mol% to 60 mol%, Furthermore, 20 mol% to 60 mol% is preferable, and most preferably 25 mol% to 55 mol%.
  • the saponification degree of the vinyl ester unit of EVOH is selected from the range of 90 mol% to 100 mol%, preferably 95 mol% to 100 mol%, more preferably 99 mol% to 100 mol%. When the degree of saponification is high, crystallization is easy and gas barrier properties are increased.
  • EVOH may be used by mixing EVOH having at least one of ethylene content, saponification degree, and polymerization degree. EVOH may contain other copolymerization components as long as the object of the present invention is not impaired. These EVOHs may be used in combination.
  • the maleic anhydride-modified polyolefin resin is obtained by graft polymerization of maleic anhydride to a polyolefin resin.
  • polyolefin resin polyethylene ⁇ low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ultra low density polyethylene (ULDPE), medium density polyethylene, high density polyethylene (HDPE) ⁇ , or polypropylene is preferably used.
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • ULDPE ultra low density polyethylene
  • HDPE high density polyethylene
  • a plurality of these maleic anhydride-modified polyolefin resins may be used in combination.
  • the maleic anhydride-modified polyolefin resin is 0.05 parts by weight, 0.1 parts by weight or more, 0.3 parts by weight or more, 0.5 parts by weight of maleic anhydride with respect to 100 parts by weight of the polyolefin resin.
  • Part or more, or 1.0 part by weight or more and 50 parts by weight or less, 30 parts by weight or less, 20 parts by weight or less, 10 parts by weight or less, or 5.0 parts by weight or less can be used.
  • maleic anhydride-modified polyolefin resins include those described in JP-A-9-27895.
  • the non-adsorptive film used in the packaging bag of the present invention further includes a first base material layer in addition to the first thermal adhesive layer. It is preferable that the first base material layer can impart an appropriate stiffness to the non-adsorptive film and a barrier property that prevents moisture and oxygen from entering from the outside.
  • the first base layer examples include a polyolefin resin film, a polyvinyl chloride film, a polyvinylidene chloride film, a polychlorotrifluoroethylene film, a polytetrafluoroethylene film, a saturated or unsaturated polyester film (for example, polyethylene Examples thereof include terephthalate (PET) and polybutylene terephthalate), polyamide films, polyacrylonitrile films, and laminates of two or more thereof. Furthermore, pure aluminum foil or aluminum alloy foil may be laminated for the purpose of improving the barrier property.
  • PET terephthalate
  • polybutylene terephthalate polybutylene terephthalate
  • pure aluminum foil or aluminum alloy foil may be laminated for the purpose of improving the barrier property.
  • a film obtained by depositing a vapor deposition layer or a halogenated polymer layer of a metal, a semimetal or an oxide thereof on the above resin film can be used.
  • the vapor deposition layer of metal, metalloid or oxide thereof include aluminum vapor deposition film, silica vapor deposition film, alumina vapor deposition film, silica / alumina binary vapor deposition film, and the like.
  • a polyvinylidene chloride coating film, a polyvinylidene fluoride coating film, and the like are examples of the vapor deposition layer of metal, metalloid or oxide thereof.
  • examples of the vapor deposition layer of metal, metalloid or oxide thereof include aluminum vapor deposition film, silica vapor deposition film, alumina vapor deposition film, silica / alumina binary vapor deposition film, and the like.
  • a polyvinylidene chloride coating film, a polyvinylidene fluoride coating film, and the like
  • the thickness of the first thermal adhesive layer may be 5 ⁇ m or more, 10 ⁇ m or more, 20 ⁇ m or more, 30 ⁇ m or more, or 40 ⁇ m or more, and may be 150 ⁇ m or less, 100 ⁇ m or less, or 80 ⁇ m or less. Further, the thickness of the first base material layer may be 20 ⁇ m or more, 30 ⁇ m or more, or 50 ⁇ m or more, and may be 200 ⁇ m or less, 150 ⁇ m or less, or 100 ⁇ m or less.
  • the first heat-adhesive layer of the non-adsorbing film used in the packaging bag of the present invention is preferably formed from a mixed resin obtained by polymerizing EVOH and maleic anhydride-modified polyolefin resin. It can be manufactured by the method described in 1.
  • a film is formed.
  • the range of specific energy at the time of melt mixing is preferably 2.7 MJ / Kg or more and 12.1 MJ / Kg or less.
  • the specific energy refers to the energy given from the melt-kneading equipment to the resin per unit weight (1 kg) during melt-kneading, and is a value obtained by the following formula. The larger the value, the higher the kneading effect. It will be.
  • the torque, the kneader rotation speed, and the resin extrusion amount mean the following.
  • Torque Force required to rotate the kneader screw Kneader rotation speed: Kneader motor rotation speed required to rotate the kneader screw per unit time
  • Resin extrusion rate Kneader per unit time Amount of resin extruded from
  • Melting and mixing of EVOH and maleic anhydride-modified polyolefin resin can be carried out with a biaxial or more screw kneader.
  • a screw kneader with two or more axes the screw shape and the resin extrusion amount affect the specific energy.
  • the screw shape is a combination of a kneading part, a reverse flight part and / or a mixing part in the flight part, compared to the one using a general purpose screw only for the flight part (hereinafter referred to as a full flight type). It is desirable to use a material (hereinafter referred to as a high shear type).
  • the screw can be used alone or in combination with a screw consisting of a flight screw, a pineapple, and a kneading disk.
  • additives such as heat stabilizers, weathering stabilizers, lubricants, antistatic agents, nucleating agents, fillers, pigments, dyes, flame retardants, anti-blocking agents, etc. that are usually used You may make it contain.
  • a polymer alloy obtained by melt mixing is formed into a film by a forming method such as a T-die method or an inflation method to obtain a first thermal adhesive layer.
  • a film obtained by melt-mixing incompatible resin components and forming a film has a sea-island structure in which one resin is dispersed in a sea state and the other resin component is dispersed in an island shape. ing.
  • the first thermal adhesive layer of the non-adsorbing film as used in the present invention formed from a mixed resin obtained by polymer-alloying EVOH and maleic anhydride-modified polyolefin resin is composed of EVOH in a sea state, anhydrous There is a tendency that the maleic acid-modified polyolefin-based resin has a structure in which island-like dispersions are dispersed.
  • the aspect ratio of the acid-modified polyolefin resin dispersed and distributed in islands is preferably in the range of 2.0 to 9.5, more preferably in the range of 2.2 to 9.3. is there.
  • This aspect ratio is measured by analyzing an atomic force microscope image, and obtaining an average value of the ratio of the major axis to the minor axis of maleic anhydride-modified polyolefin resin particles forming and distributing islands as the aspect ratio.
  • Image analysis is performed by MOUNTECH's image analysis type particle size distribution measurement software “Mac-View ver. Measure using 4.0. Thereby, an aspect ratio, an area, etc. are automatically measured. Calculated as the average value of 100 or more particles in the image.
  • dry lamination is a method in which an adhesive is applied to one film and dried, and then the other film is overlaid and pressed to cure and bond the adhesive.
  • Extrusion laminating is a method in which a melted polyethylene resin or the like is extruded and bonded between two films.
  • the absorbent film used in the packaging bag of the present invention includes a second base material layer, an absorbent layer, and a second thermal adhesive layer. As described above, since the second thermal adhesive layer is heat-sealed with the first thermal adhesive layer of the non-adsorbing film, the second thermal adhesive layer is located in the innermost layer of the packaging bag, and the absorbent layer is the second thermal adhesive layer. Located between the second substrate layers.
  • the second thermal adhesive layer of the absorbent film used in the packaging bag of the present invention contains maleic anhydride-modified polyolefin resin.
  • the first heat-adhesive layer of the non-adsorbing film has a certain amount of maleic anhydride-modified polyolefin resin, and the second heat-adhesive layer also contains a certain amount of maleic anhydride-modified polyolefin resin. Can give appropriate heat seal strength to the packaging bag.
  • maleic anhydride-modified polyolefin resin resins similar to those described for the non-adsorbing film can be used.
  • All of the second heat-bonding layer may be maleic anhydride-modified polyolefin resin as long as appropriate heat-sealing strength can be expressed with the first heat-bonding layer, but other thermoplastics may be used. A resin may be included.
  • thermoplastic resin that can be included in the second thermal adhesive layer in addition to the maleic anhydride-modified polyolefin resin includes polyolefin resins other than maleic anhydride-modified polyolefin resins, polystyrene resins, polyester resins, and acrylic resins. , Polyurethane resins, polycarbonate resins, polysulfone resins, and derivatives thereof, and mixtures thereof. Of these, polyolefin resins are particularly preferable.
  • polyolefin resins examples include polyethylene resins (PE) and polypropylene resins (PP) other than maleic anhydride-modified polyolefin resins.
  • polyethylene resins include low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), and ethylene-acrylic acid copolymer (EAA).
  • EMMA Ethylene-methyl methacrylate copolymer
  • EMMA ethylene-methacrylic acid copolymer
  • EAA ethylene-ethyl acrylate copolymer
  • EMA ethylene-methyl acrylate copolymer
  • Examples of such polypropylene resins include polypropylene homopolymers, random polypropylene (random PP), block polypropylene (block PP), chlorinated polypropylene, and derivatives thereof, and mixtures thereof.
  • the second heat-bonding layer comprises 10 wt% to 90 wt% (preferably 20 wt% to 80 wt%) of maleic anhydride-modified polyolefin resin, and 90 wt% to 10 wt%. It is preferable to contain a polyolefin resin of wt% (preferably 80 wt% to 20 wt%).
  • the second thermal adhesive layer is composed of maleic anhydride-modified polyolefin resin
  • maleic anhydride-modified PP it is preferable to use maleic anhydride-modified PP.
  • the second thermal adhesive layer contains maleic anhydride-modified PP in an amount of 10% by weight, 30% by weight, or 50% by weight, and 90% by weight, 70% by weight, or 50% by weight. It is also preferable to contain a polyolefin resin below.
  • the second heat-adhesive layer containing LLDPE (preferably 75 wt% to 20 wt%, more preferably 70 wt% to 30 wt%) provides an easy peel property at a very wide range of heat seal temperatures. It has been found that seal strength can be imparted.
  • the present inventors include a total of 20% to 60% by weight (preferably 30% to 50% by weight) of maleic anhydride-modified LDPE and maleic anhydride-modified LLDPE, and a total of 80% of LLDPE and PP. It has been found that the second heat-adhesive layer containing 40% by weight to 40% by weight (preferably 70% to 50% by weight) can also impart heat-seal strength that gives easy peel properties over a very wide range of heat-seal temperatures. It was.
  • the inventors include 30 to 70% by weight (preferably 40% to 60% by weight) of maleic anhydride-modified PP and 70 to 30% by weight (preferably 60% to 40% by weight) of LLDPE. It has been found that the second heat-adhesive layer can also impart heat-sealing strength that gives easy peel properties over a very wide range of heat-sealing temperatures.
  • the second thermal adhesive layer contains maleic anhydride-modified PE
  • the ratio to the absorbance of 1462 to 1464 cm ⁇ 1 due to the absorption band of C—H bending vibration is 0.010 or more, 0.015 or more, 0.020 or more, 0.025 or more, or 0.030 or more. , 0.100 or less, 0.080 or less, 0.060 or less, or 0.050 or less.
  • the second thermal adhesive layer contains maleic anhydride-modified PP
  • the ratio of the absorption to the absorption of 1462 to 1464 cm ⁇ 1 due to the absorption band of C—H bending vibration of polyolefin is 0.015 or more, 0.020 or more, 0.025 or more, 0.028 or more, or 0.030. Above, it is preferable that it is 0.080 or less, 0.060 or less, 0.050 or less, or 0.040 or less. In this case, the measurement is performed by the method described in the examples. From these ratio values, the content of the maleic anhydride-modified polyolefin resin in the second adsorption layer and the degree of modification of the maleic anhydride-modified polyolefin resin with maleic anhydride can be estimated.
  • Examples of the absorbent to be contained in the absorbent layer include an oxygen absorbent, a hygroscopic agent, and an absorbent that combines these.
  • the absorbent used here is preferably a substance that does not substantially absorb an active ingredient (for example, medicinal ingredient) of the contents and absorbs a component that deteriorates the contents.
  • an inorganic absorbent is used, and as the inorganic absorbent, chemical adsorbents such as calcium oxide, calcium chloride, calcium sulfate, magnesium sulfate, sodium sulfate, and aluminum oxide, quicklime, silica gel, inorganic Mention may be made of physical adsorbents such as molecular sieves of compounds.
  • molecular sieves of inorganic compounds include, but are not limited to, an open structure capable of diffusing small molecules such as aluminosilicate minerals, clay, porous glass, microporous activated carbon, zeolite, activated carbon, or water. A compound can be mentioned.
  • Such an inorganic absorbent is useful as a hygroscopic agent because it can obtain high hygroscopicity even in a low humidity region.
  • Zeolite As the zeolite, natural zeolite, artificial zeolite, synthetic zeolite or the like can be used. Zeolite is a porous granular material used to separate substances according to the difference in molecular size, and has a structure with uniform pores. Therefore, water (steam, water vapor), organic gas, etc. can be absorbed.
  • An example of a synthetic zeolite is a molecular sieve. Among these, a molecular sieve having a pore (absorption port) diameter of 0.3 nm to 1 nm can be used.
  • molecular sieves having pore sizes of 0.3 nm, 0.4 nm, 0.5 nm, and 1 nm are referred to as molecular sieve 3A, molecular sieve 4A, molecular sieve 5A, and molecular sieve 13X, respectively.
  • the average particle size of the molecular sieve is, for example, about 10 ⁇ m. In the present invention, these zeolites can be properly used in accordance with the object to be absorbed and the properties of the contents.
  • oxygen absorbents such as iron powder and cerium oxide
  • cerium oxide having oxygen defects is particularly preferable.
  • Cerium oxide having an oxygen defect is a substance obtained by heating cerium oxide in a reducing gas such as hydrogen, carbon monoxide, acetylene, etc., and has a structure similar to fluorite, and has the general formula CeO. 2-x .
  • X representing the degree of oxygen defects is in the range of greater than 0 and less than or equal to 1. If it exceeds 1, the crystal structure cannot be maintained, which is not preferable.
  • the absorbent is in the range of 5% by weight or more, 10% by weight or more, 20% by weight or more, 30% by weight or more, 40% by weight or more, or 50% by weight or more based on the weight of the absorbent layer from the viewpoint of the absorption capacity. In the range of 90% by weight, 80% by weight, 70% by weight or less, or 60% by weight or less from the viewpoint of dispersibility in the thermoplastic resin binder and moldability. Can be included.
  • the thermoplastic resin binder used in the absorbent layer includes polyolefin resin, polystyrene resin, polyester resin, acrylic resin, polyamide resin, polyurethane resin, polycarbonate resin, polysulfone resin, and these Derivatives, as well as mixtures thereof.
  • polyolefin resin is particularly preferable, and the same resin as the polyolefin resin that can be used for the second thermal adhesive layer can be used.
  • the same layer as the first base material layer of the non-adsorptive film described above can be used.
  • a skin layer may be further included between the absorbent layer and the second base material layer, thereby preventing delamination between the absorbent layer and the second base material layer.
  • the skin layer may be composed of the same resin as that of the second thermal adhesive layer, or may be composed of a thermoplastic resin binder that can be used in the absorption layer.
  • the thickness of the second thermal adhesive layer and the skin layer may be 5 ⁇ m or more, 10 ⁇ m or more, or 20 ⁇ m or more, and may be 80 ⁇ m or less, 50 ⁇ m or less, or 30 ⁇ m or less.
  • the thickness of the oxygen absorbing layer may be 10 ⁇ m or more, 20 ⁇ m or more, or 30 ⁇ m or more, and may be 100 ⁇ m or less, 80 ⁇ m or less, or 50 ⁇ m or less.
  • the thickness of the second base material layer may be 20 ⁇ m or more, 30 ⁇ m or more, or 50 ⁇ m or more, and may be 200 ⁇ m or less, 150 ⁇ m or less, or 100 ⁇ m or less.
  • the absorptive film can be manufactured by a multilayer inflation method, a multilayer T-die method, a multilayer cast method, or the like, with the second thermal adhesive layer and the absorbent layer.
  • thermoplastic resin binder and the absorbent of the absorbent layer are mixed with a kneader, Banbury mixer, Henschel.
  • a resin composition (pellet) for the absorbent layer is prepared by heating and kneading with a batch type or continuous kneader such as a mixer or mixing roll, a single screw extruder, or a twin screw kneader, and then processing into a pellet. can do.
  • the absorbent content may be adjusted by dry blending the pellets with the thermoplastic resin binder pellets.
  • the maleic anhydride-modified polyolefin resin and the other thermoplastic resin are batch-typed similarly to the absorbent layer.
  • the resin composition (pellet) for the second heat-bonding layer can be produced by heating and kneading with a continuous kneader, single-screw extruder, twin-screw kneader or the like and then processing into a pellet. .
  • an absorptive film can be manufactured by performing multilayer film formation by the inflation method etc. using the pellet for absorption layers, and the pellet of the resin for the 2nd heat adhesion layers.
  • the skin layer can be formed into a multilayer film together with the absorbent layer and the second thermal adhesive layer by a multilayer inflation method or the like.
  • a separately manufactured second heat bonding layer and an optional skin layer may be laminated by a known lamination method such as thermocompression bonding or dry lamination.
  • the laminating method of the second base material layer of the absorbent film and the absorbent layer or skin layer is the same as the laminating method of the first heat bonding layer and the first base material layer of the non-adsorbing film.
  • the method can be used.
  • heat-resistant stabilizers, weather-resistant stabilizers, lubricants, antistatic agents, nucleating agents, fillers, and pigments that are normally used.
  • Additives such as dyes, flame retardants, light stabilizers, antioxidants, ultraviolet absorbers, plasticizers and antiblocking agents may be contained.
  • the contents to be put in the packaging bag of the present invention are not particularly limited as long as they are affected by the presence of oxygen, moisture and the like.
  • food, medicine, chemical substances and the like can be mentioned.
  • the drug include a patch that percutaneously absorbs a medicinal component that deteriorates with oxygen.
  • medical agent etc. which deteriorate with a water
  • FIG. 1 shows the packaging bag (10) of the present invention including the contents (100).
  • the packaging bag (10) includes a non-adsorptive film (1) including a first thermal adhesive layer (11) and a first base material layer (12), a second thermal adhesive layer (21), and an absorbent layer. (22) and the absorptive film (2) containing the 2nd base material layer (23) are heat-sealed and formed.
  • the absorbent film (2) is an oxygen-absorbing film
  • the content of the medicinal component layer (B) applied on the support (A) is covered with a plastic release film (C).
  • a patch (100) In such a medicinal component patch, the medicinal component is easily volatilized from the support (A) side of the patch (100). Therefore, the support (A) of the patch (100) is disposed on the non-adsorbing film (1) side, the release film (C) is disposed on the oxygen-absorbing film (2) side, and the patch (100 )
  • the packaging bag (10) of the present invention the volatilization of the medicinal components can be prevented, and the oxygen content in the packaging bag can be kept at a low concentration by the oxygen-absorbing film (2). Become.
  • the packaging bag of this invention can be manufactured by heat-sealing the 1st heat adhesion layer of said non-adsorbing film, and the 2nd heat adhesion layer of said absorbent film.
  • the heat seal condition is not limited as long as the above heat seal strength can be given.
  • the heat seal condition is 0 to 80 ° C. to 280 ° C. with a pressure of 0.05 MPa to 5.0 MPa. It can be executed under the condition of 05 seconds to 5.0 seconds.
  • the heat seal temperature can be, for example, 80 ° C. or higher, 100 ° C. or higher, 110 ° C. or higher, 120 ° C. or higher, or 130 ° C. or higher, and 280 ° C. or lower, 250 ° C. or lower, 230 ° C. or lower, or 210 ° C. or lower.
  • the heat seal pressure is, for example, 0.05 MPa or more, 0.1 MPa or more, or 0.2 MPa or more, and 5.0 MPa or less, 3.0 MPa or less, 1.0 MPa or less, 0.8 MPa or less, or 0.5 MPa or less. can do.
  • the heat sealing time is, for example, 0.05 seconds or more, 0.1 seconds or more, 0.2 seconds or more, or 0.3 seconds or more, 5.0 seconds or less, 3.0 seconds or less, 2.0 seconds or less 1.0 seconds or less, or 0.8 seconds or less.
  • the packaging bag of the present invention is at least partially heat-sealed with the first heat-adhesive layer of the non-adsorbing film and the second heat-adhesive layer of the absorbent film, and formed into a form such as a four-sided bag or a gusset bag. can do.
  • a known method such as an impulse method can be performed in accordance with the above-described conditions.
  • Example preparation> ⁇ Preparation of non-adsorbing film> Polymer alloy obtained by melt-mixing 12 parts maleic anhydride-modified polyolefin resin (Modic DU6400, Mitsubishi Chemical Corporation) and 88 parts EVOH (Eval E171B, Kuraray Co., Ltd.) at a specific energy of 5.6 MJ / kg was formed with a T-die, and a film having a thickness of 30 ⁇ m was formed as a first thermal adhesive layer (maleic anhydride-modified polyolefin resin island aspect ratio: 2.59, menthol adsorption amount: below measurement limit).
  • a PET film (thickness: 12 ⁇ m) and an aluminum foil (thickness: 9 ⁇ m) are dry-laminated as a first base material layer on this first thermal adhesive layer, and PET film / aluminum foil / first thermal adhesive layer It was set as the non-adsorbing film which consists of.
  • an antiblocking agent-containing resin pellet PEX ABR-24AL, Tokyo Ink Co., Ltd.
  • packaging bags of Examples 1 to 16 and Comparative Example 1 were produced and evaluated.
  • Cerium oxide having oxygen defects was prepared as an oxygen absorbent to be added to the absorption layer.
  • pellets of LLDPE (Evolue SP2520, Prime Polymer Co., Ltd.) were prepared for the skin layer.
  • a multilayer T-die film forming machine KZW15TW-45MG-NH (-2200, Co., Ltd.) (Technobel) produced a three-layer oxygen-absorbing multilayer film (skin layer 20 ⁇ m / oxygen absorbing layer 30 ⁇ m / second thermal adhesive layer 20 ⁇ m).
  • a laminated base material prepared by extruding and laminating a PET film having a thickness of 12 ⁇ m and an aluminum foil having a thickness of 9 ⁇ m with polyethylene was prepared.
  • the aluminum foil surface of the second base material layer and the skin layer of the oxygen-absorbing multilayer film having a three-layer structure produced by the above method were extruded and laminated to obtain an oxygen-absorbing film.
  • the first heat-adhesive layer of the non-adsorbing film and the second heat-adhesive layer of the oxygen-absorbing film face each other, and the four sides of these films are subjected to a pressure of 0.2 MPa and a heating time of 0.5 seconds. Then, heat sealing was performed at various temperatures at intervals of 10 ° C. to prepare four-side sealed bags.
  • ⁇ Evaluation> ⁇ Evaluation of heat seal strength> The heat seal strength was measured at a tensile speed of 300 mm / min in accordance with a T-type peel test according to JIS Z0238. When a heat seal strength in the range of 1.0 to 7.0 N / 15 mm is obtained by this measurement, it is evaluated as “good” as having a heat seal strength that gives easy peel properties. When strength was not obtained, it was set as x.
  • the packaging bags of each example heat-sealed at various temperatures at intervals of 10 ° C can be packaged if they can be bonded with heat-sealing strength that gives easy peel properties at a wide range of heat-sealing temperatures of 20 ° C or higher.
  • the production suitability of the bag was evaluated as “ ⁇ ”, and when the temperature range was 10 ° C. or higher, the production suitability was rated as “ ⁇ ”, and when the temperature range was less than 10 ° C., this was marked as “ ⁇ ”.
  • the second thermal adhesive layer of the absorbent film is composed only of LLDPE
  • the first thermal adhesive layer of the non-adsorptive film could not be heat sealed.
  • the second thermal adhesive layer of the absorbent film contains a maleic anhydride-modified polyolefin resin
  • the heat seal itself can be achieved by increasing the heat seal temperature even if the amount is small. I understand.
  • heat seal strength can be imparted with an easy peel property at a very wide range of heat seal temperatures.
  • maleic anhydride-modified LDPE and the maleic anhydride-modified LLDPE are used in combination in the second heat-adhesive layer, and LLDPE and PP are used in combination, It can be seen that heat sealing strength that gives easy peelability can be imparted over a wide range of heat sealing temperatures.
  • heat-sealing strength that provides easy peel properties can be imparted at a very wide range of heat-sealing temperatures.
  • the inventors have a second containing 9 parts by weight of maleic anhydride modified LDPE (Modic DL2500, Mitsubishi Chemical Corporation) and 1 part by weight of LLDPE (Evolu SP2520, Prime Polymer Co., Ltd.).
  • Maleic anhydride modified LDPE Modic DL2500, Mitsubishi Chemical Corporation
  • LLDPE LLDPE
  • the inventors changed the 1 part by weight of LLDPE to 1 part by weight of PP (Novatech PP (FG3DC), Nippon Polypro Co., Ltd.) in the second thermal adhesive layer of the packaging bag to produce a packaging bag.
  • PP Novatech PP (FG3DC), Nippon Polypro Co., Ltd.
  • a packaging bag was produced in the same manner as in Example 2 except that the layer thickness of the oxygen-absorbing multilayer film was changed to skin layer 10 ⁇ m / oxygen absorption layer 20 ⁇ m / second thermal adhesive layer 10 ⁇ m. Easy peelability and a wide range of heat seal temperatures could be confirmed. The layer thickness of the oxygen-absorbing multilayer film was the same even when the skin layer was 20 ⁇ m / oxygen-absorbing layer 20 ⁇ m / second thermal adhesive layer 20 ⁇ m.
  • Non-adsorptive film 11 1st heat-adhesion layer 12 1st base material layer 2 Absorbent film (oxygen-absorbing film) 21 Second thermal adhesive layer 22 Oxygen absorbing layer 23 Second substrate layer 10 Packaging bag 100 Contents (patch) A support B medicinal component layer C release film

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Food Science & Technology (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Bag Frames (AREA)
  • Packages (AREA)

Abstract

La présente invention concerne un sachet d'emballage qui n'adsorbe pas des ingrédients actifs du contenu et qui soit apte à empêcher une détérioration due à l'oxygène, à l'humidité ou analogue et qui présente une aptitude au pelage facile sur la base d'une résistance de thermoscellage adéquate. Un sachet d'emballage (10) facilement pelable selon l'invention comprend : un film non adsorbant (1) qui est pourvu d'une première couche de base (12) et d'une première couche de thermosoudage (11) ; et un film absorbant (2) qui est pourvu d'une seconde couche de base (23), d'une couche d'absorption (22) et d'une seconde couche de thermosoudage (21). Ce sachet d'emballage (10) facilement pelable est thermoscellé au moyen de la première couche de thermosoudage (11) et de la seconde couche de thermosoudage (21). La première couche de thermosoudage (11) contient de l'EVOH et une résine de polyoléfine modifiée par l'anhydride d'acide maléique. La seconde couche de thermosoudage (21) contient une résine de polyoléfine modifiée par l'anhydride d'acide maléique. La première couche de thermosoudage (11) et la seconde couche de thermosoudage (21) sont thermoscellées à une résistance de thermoscellage de 1,0 à 7,0 N/15 mm telle que mesurée par un essai de pelage en T à une vitesse de tension de 300 mm/min selon la norme JIS Z0238.
PCT/JP2015/070889 2014-07-23 2015-07-22 Sachet d'emballage facilement pelable WO2016013595A1 (fr)

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JP2014150263 2014-07-23
JP2014152374 2014-07-25
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JP2018115026A (ja) * 2017-01-20 2018-07-26 共同印刷株式会社 包装袋及びその製造方法
WO2018203123A1 (fr) * 2017-05-01 2018-11-08 藤森工業株式会社 Sac d'emballage
WO2019203063A1 (fr) * 2018-04-16 2019-10-24 共同印刷株式会社 Film d'absorption facilement détachable
JP2020011737A (ja) * 2018-07-13 2020-01-23 共同印刷株式会社 包装袋
JP2020158140A (ja) * 2019-03-26 2020-10-01 大日本印刷株式会社 消臭包装体
JP2021062907A (ja) * 2019-10-16 2021-04-22 小川産業株式会社 滅菌袋及びそれを利用する製品の製造方法
JP2022093686A (ja) * 2017-05-01 2022-06-23 藤森工業株式会社 包装袋
JP7586201B2 (ja) 2023-01-10 2024-11-19 Ｚａｃｒｏｓ株式会社 包装袋

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JP7440737B2 (ja) * 2018-11-22 2024-02-29 キョーラク株式会社 製袋充填用フィルム、製袋充填方法

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EP2540492A1 (fr) * 2011-06-30 2013-01-02 Amcor Flexibles Transpac N.V. Film pelable
WO2014115485A1 (fr) * 2013-01-24 2014-07-31 共同印刷株式会社 Sac d'emballage

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TWI772357B (zh) * 2017-01-20 2022-08-01 日商共同印刷股份有限公司 包裝袋及其製造方法
JP2018115026A (ja) * 2017-01-20 2018-07-26 共同印刷株式会社 包装袋及びその製造方法
US11077998B2 (en) 2017-01-20 2021-08-03 Kyodo Printing Co., Ltd. Packaging bag and manufacturing method therefor
EP3572347A4 (fr) * 2017-01-20 2020-09-30 Kyodo Printing Co., Ltd. Sac d'emballage et procédé de fabrication de ce dernier
CN110191847B (zh) * 2017-01-20 2021-09-21 共同印刷株式会社 包装袋和其制造方法
CN110191847A (zh) * 2017-01-20 2019-08-30 共同印刷株式会社 包装袋和其制造方法
WO2018135591A1 (fr) * 2017-01-20 2018-07-26 共同印刷株式会社 Sac d'emballage et procédé de fabrication de ce dernier
KR20190129109A (ko) * 2017-05-01 2019-11-19 후지모리 고교 가부시키가이샤 포장 백
JP7209884B2 (ja) 2017-05-01 2023-01-20 藤森工業株式会社 包装袋
JP2018188189A (ja) * 2017-05-01 2018-11-29 藤森工業株式会社 包装袋
JP2022093686A (ja) * 2017-05-01 2022-06-23 藤森工業株式会社 包装袋
JP7071063B2 (ja) 2017-05-01 2022-05-18 藤森工業株式会社 包装袋
KR102364564B1 (ko) * 2017-05-01 2022-02-17 후지모리 고교 가부시키가이샤 포장 백
KR20210055811A (ko) * 2017-05-01 2021-05-17 후지모리 고교 가부시키가이샤 포장 백
WO2018203123A1 (fr) * 2017-05-01 2018-11-08 藤森工業株式会社 Sac d'emballage
KR102291214B1 (ko) * 2017-05-01 2021-08-18 후지모리 고교 가부시키가이샤 포장 백
JP2019181882A (ja) * 2018-04-16 2019-10-24 共同印刷株式会社 易剥離性吸収フィルム
JP7002399B2 (ja) 2018-04-16 2022-01-20 共同印刷株式会社 易剥離性吸収フィルム
US11318720B2 (en) 2018-04-16 2022-05-03 Kyodo Printing Co., Ltd. Readily peelable absorption film
CN112004676A (zh) * 2018-04-16 2020-11-27 共同印刷株式会社 易剥离性吸收薄膜
WO2019203063A1 (fr) * 2018-04-16 2019-10-24 共同印刷株式会社 Film d'absorption facilement détachable
JP2020011737A (ja) * 2018-07-13 2020-01-23 共同印刷株式会社 包装袋
JP2020158140A (ja) * 2019-03-26 2020-10-01 大日本印刷株式会社 消臭包装体
JP2021062907A (ja) * 2019-10-16 2021-04-22 小川産業株式会社 滅菌袋及びそれを利用する製品の製造方法
JP7586201B2 (ja) 2023-01-10 2024-11-19 Ｚａｃｒｏｓ株式会社 包装袋

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