WO2007094144A1 - 熱収縮性多層フィルム及びそれを用いた包装材 - Google Patents
熱収縮性多層フィルム及びそれを用いた包装材 Download PDFInfo
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- WO2007094144A1 WO2007094144A1 PCT/JP2007/050407 JP2007050407W WO2007094144A1 WO 2007094144 A1 WO2007094144 A1 WO 2007094144A1 JP 2007050407 W JP2007050407 W JP 2007050407W WO 2007094144 A1 WO2007094144 A1 WO 2007094144A1
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- heat
- multilayer film
- shrinkable multilayer
- film
- resin
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Classifications
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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
- B32B27/06—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
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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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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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
- B65D75/002—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 in shrink films
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- 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.]
- Y10T428/1328—Shrinkable or shrunk [e.g., due to heat, solvent, volatile agent, restraint removal, etc.]
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- 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.]
- Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
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- 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]
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- 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]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
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- 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]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
- Y10T428/1393—Multilayer [continuous layer]
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- 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
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
- Y10T428/31743—Next to addition polymer from unsaturated monomer[s]
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- 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
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
- Y10T428/31739—Nylon type
- Y10T428/31743—Next to addition polymer from unsaturated monomer[s]
- Y10T428/31746—Polymer of monoethylenically unsaturated hydrocarbon
Definitions
- the present invention relates to a heat-shrinkable multilayer film useful as a bag-shaped bouch packaging material, a bag packaging material, a pillow packaging material, a deep drawing packaging material, a tray packaging lid material, and the like.
- JP-A-2002-172746 (Reference 1) describes an outer surface layer (a) made of thermoplastic resin and an intermediate layer made of polyamide resin. (B) and at least three layers including an inner surface layer (c) composed of a sealable resin, and the thermoplastic resin constituting the outer surface layer (a) is a polyester-based resin or a polyolefin-based resin And the polyamide-based resin constituting the intermediate layer (b) is an aromatic polyamide resin of 85 to 60% by weight and a copolymer of aliphatic diamine Z isophthalic acid and aliphatic diamine Z terephthalic acid.
- the sealable resin constituting the inner surface layer (c) is essentially composed of ethylene and a-olefin having a density of less than 0.915. It is a copolymer, and its hot water shrinkage at 80 ° C is 30% or less in both the vertical and horizontal directions.
- a heat-shrinkable multilayer film that has been heat-treated after biaxial stretching treatment, which is 35% or more in at least one direction along the length Z, is disclosed. In the specification, the melting point is 195 as the aliphatic polyamide resin.
- a heat-shrinkable multilayer film using a nylon 6-66 copolymer at about ° C is described.
- the present invention has been made in view of the above-mentioned problems of the prior art, and includes heat shrinkability, strength, heat resistance, high temperature creep resistance, moldability, various packaging suitability, gas barrier properties, and water vapor barriers.
- the object is to provide a heat-shrinkable multilayer film that satisfies various properties such as heat resistance and visibility, and is particularly excellent in heat resistance and high-temperature creep resistance.
- the present invention has been completed.
- the heat-shrinkable multilayer film of the present invention includes an outer surface layer (a) made of thermoplastic resin, a first intermediate layer (bl) made of polyamide resin, and ethylene-butyl acetate copolymer.
- a heat-shrinkable multilayer film comprising a second intermediate layer (b2) made of a coalescent cane and an inner surface layer (c) made of a polyolefin-based resin,
- the thermal shrinkage ratio of the heat shrinkable multilayer film in the longitudinal direction and the transverse direction at a temperature of 90 ° C is in the range of 3 to 45%, respectively.
- the polyamide resin is a mixture of 60 to 90% by mass of an aliphatic polyamide having a melting point of 210 ° C. or higher and 10 to 40% by mass of an aromatic polyamide mainly composed of isophthalic acid and terephthalic acid as acid components. Is.
- the aliphatic polyamide is at least one selected from the group force consisting of nylon 6 and nylon 66.
- the saponified ethylene-acetate copolymer has an ethylene content in the range of 25 to 48 mol% and a saponification degree. Is preferably 98% or more.
- the polyolefin resin is a homopolymer of ethylene, a homopolymer of propylene, or a copolymer of linear ⁇ -olefin having 2 to 8 carbon atoms. It is preferable that the group power is at least one polymer selected.
- thermoplastic resin is a polyester-based resin.
- the heat-shrinkable multilayer film of the present invention includes the outer surface layer (a) and the first intermediate layer.
- the second intermediate layer (b2), and the multilayer film comprising the inner surface layer (c) are stretched in the longitudinal and lateral directions at a stretching ratio of 2.5 to 4 times, respectively. It is preferably obtained by relaxing heat treatment so that the relaxation rate is 2 to 40%.
- the bag-shaped pouch packaging material of the present invention is characterized in that it also has the heat-shrinkable multilayer film force.
- the nogg wrapping material of the present invention is characterized in that it also has the heat shrinkable multilayer film force.
- the pillow wrapping material of the present invention is characterized by having the heat-shrinkable multilayer film force.
- the deep-drawn packaging material of the present invention is characterized by having the heat-shrinkable multilayer film force.
- the tray packaging lid material of the present invention is characterized by having the heat-shrinkable multilayer film force.
- FIG. 1 is a schematic view showing an apparatus suitable for producing the heat-shrinkable multilayer film of the present invention.
- the heat shrinkable multilayer film of the present invention comprises an outer surface layer (a) composed of a thermoplastic resin described later, a first intermediate layer (bl) composed of a polyamide-based resin described later, and an ethylene-vinyl acetate described later.
- a shrinkable multilayer film comprising a second intermediate layer (b2) made of a copolymer can and an inner surface layer (c) made of a polyolefin-based resin described later,
- the shrinkable multilayer film has a hot water shrinkage in the longitudinal direction and a transverse direction at a temperature of 90 ° C., each in a range of 3 to 45%, and
- Described later polyamide ⁇ is, a melting point of 210 ° and 60 to 90 wt% C or more aliphatic polyamides, the aromatic polyamide 10-40 mass 0/0 composed mainly of isophthalic acid and terephthalic acid as the acid component It is a mixture.
- thermoplastic resin constituting the outer surface layer (a) according to the present invention has an appropriate stretchability in a laminated state with a first intermediate layer (bl) made of a polyamide-based resin described later.
- thermoplastic resin include polyester-based resin and polyolefin-based resin.
- PO polyolefin resin
- examples of such polyolefin resin include, for example, ethylene homopolymer; propylene homopolymer; VLDPE (linear very low density polyethylene), LLDPE (linear low density polyethylene). ) And other linear ⁇ -olefin copolymers; propylene ethylene copolymer, propylene ethylene-butene 1 copolymer, EVA (ethylene acetate butyl copolymer), EAA (ethylene acrylic acid copolymer) ), EMAA (ethylene-methacrylic acid copolymer), EMA (ethylene methyl acrylate copolymer), EEA (ethylene ethylene acrylate copolymer), EBA (ethylene butyl acrylate copolymer) And other polyolefin copolymers.
- EVA ethylene acetate butyl copolymer
- EAA ethylene acrylic acid copolymer
- EMAA ethylene-methacrylic acid copolymer
- EMA ethylene
- These polyolefin resin may be used alone or in combination of two or more.
- the catalyst used for polymerizing these polyolefin-based resins include known conventional catalysts (Tidara one-natta catalyst), single-site catalysts (metalocene catalyst), and the like.
- thermoplastic resin is a polyester-based resin. It is preferably a resin.
- polyester-based resin examples include aliphatic polyester-based resin and aromatic polyester-based resin.
- polyester-based resin is, for example,
- Such a dicarboxylic acid component is not particularly limited as long as a polyester can be obtained by an ordinary production method.
- terephthalic acid, isophthalic acid, adipic acid, oxalic acid, malonic acid examples include dimer acid, which is a dimer of succinic acid, azelaic acid, sebacic acid, phthalic acid, 5-tert-butylisophthalic acid, naphthalene dicarboxylic acid, diphenyl ether dicarboxylic acid, cyclohexane dicarboxylic acid, and unsaturated fatty acid. It is done.
- These dicarboxylic acid components may be used alone or in combination of two or more.
- such a diol component is not particularly limited as long as a polyester can be obtained by a normal production method.
- These diol components can be used alone or in combination of two or more.
- polyester-based resins containing aromatic dicarboxylic acid components are preferred as dicarboxylic acid components such as terephthalic acid and isophthalic acid.
- Group power of acid power Aromatic polyester-based resin obtained using diol with 10 or less carbon atoms as diol component using at least one selected (For example, polyethylene terephthalate, polybutylene terephthalate)
- Aromatic polyester-based resin (for example, bell polyester) obtained by using terephthalic acid and isophthalic acid as the dicarboxylic acid component and ethylene glycol as the diol component.
- “Pelpet IFG-8L” manufactured by Steal Products is particularly preferred.
- these polyester resin may be used alone or in combination of two or more. Further, as these polyester-based resins, those having an intrinsic viscosity of about 0.6 to 1.2 are preferably used.
- the thickness of the outer surface layer (a) is in the range of 0.5 to 20 m. More preferably, it is the range. Furthermore, in the case where the thermoplastic resin constituting the outer surface layer (a) is a polyester-based resin, the thickness of the outer surface layer (a) is a first value which will be described later in order to harmonize the biaxial stretching suitability.
- the thickness of the outer surface layer (a), which is preferably smaller than the thickness of the intermediate layer (bl), is more preferably in the range of 3 to 70% with respect to the thickness of the first intermediate layer (bl) described later. A range of 6-30% is particularly preferable.
- the outer surface layer (a) useful in the present invention is, for example, a thermoplastic elastomer typified by thermoplastic polyurethane, a polyolefin modified with an acid such as maleic acid or an anhydride thereof. It can contain up to 20% by mass of thermoplastic resin other than polyester-based resin such as resin-based resin.
- the polyamide-based resin (“PA”) constituting the first intermediate layer (bl) according to the present invention comprises 60 to 90% by mass of a specific aliphatic polyamide and isophthalic acid and terephthalic acid as main components. It is necessary to be a mixture of 10 to 40% by weight of aromatic polyamide. When the aromatic polyamide is less than 10% by mass, a high hot water shrinkage rate cannot be obtained. On the other hand, when the aromatic polyamide exceeds 40% by mass, the extrusion processability and stretchability of the multilayer film become poor. For example, the resulting heat-shrinkable multilayer film becomes brittle and tends to rupture during inflation molding or clip breakage during T-die molding, reducing productivity.
- the aromatic polyamide is not particularly limited !, but for example, an isophthalic acid component of 40 to 98 mol% and a terephthalic acid component of 2 to 60 mol% of an acid component, Can be exemplified Renjiamin 50-100 mole 0/0, and bis (p- aminocyclohexyl) methane 0-50 mole 0/0 forces were obtained from the consisting aliphatic Jiamin copolymer.
- Such aromatic polyamides are usually amorphous, and even if they are crystalline, they are very small and the melting point is not clear.
- the melting point of the aliphatic polyamide is required to be 210 ° C or higher. Furthermore, in the present invention, the melting point of the aliphatic polyamide is preferably 215 ° C or higher, more preferably 220 ° C or higher. If the melting point of the aliphatic polyamide is less than S210 ° C, a heat-shrinkable multilayer film with sufficiently excellent heat resistance and high-temperature creep resistance cannot be obtained.
- the aliphatic polyamide having a melting point of 210 ° C. or higher include nylon 6, nylon 66, and nylon 610. Among these, nylon 6 and nylon 66 are preferred from the viewpoint of film forming property, moldability, heat resistance, and creep resistance. Nylon 6 is particularly preferred. These aliphatic polyamides can be used alone or in admixture of two or more.
- the film is amorphous, so that the heat resistance of the film is poor and the film forming property is adversely affected. Further, even if a material having a higher soft spot than that of the aromatic polyamide is used, the film-forming property is deteriorated, and desired heat resistance and high temperature creep resistance cannot be achieved.
- the thickness of the first intermediate layer (bl) that is useful in the present invention is preferably in the range of 4 to 25 ⁇ m, preferably in the range of 3 to 35 / ⁇ ⁇ . More preferably. If the thickness of the first intermediate layer (bl) is less than the lower limit, the heat resistance and pinhole resistance tend to be inferior. On the other hand, if the thickness exceeds the upper limit, the film forming property tends to deteriorate.
- the ethylene succinic acid copolymer copolymer saponification strength is preferably in the range of ethylene content power of 25 to 48 mol% and saponification degree of 98% or more.
- ethylene content of the ethylene acetate butyl copolymer saponification product is less than 25 mol%, insoluble matter tends to be generated, and when it exceeds 48 mol%, the oxygen gas noriability tends to deteriorate. is there. Further, when the degree of chaining of the ethylene-acetate copolymer copolymer is less than 98%, the oxygen gas nooricity tends to deteriorate.
- the thickness of the second intermediate layer (b2) is preferably in the range of 1 to 30 ⁇ m. More preferably, it is in the range of ⁇ 15 ⁇ m. If the thickness of the second intermediate layer (b2) is less than the lower limit, sufficient oxygen gas barrier properties tend not to be obtained. On the other hand, if the thickness exceeds the upper limit, stretching tends to be difficult.
- polyolefin resin (“PO”) constituting the inner surface layer (c) according to the present invention it is preferable to use one having an appropriate seal strength in the range of 90 to 250 ° C.
- polyolefin resin (“PO”) include those similar to the polyolefin resin as the component constituting the outer surface layer (a) described above.
- ethylene homopolymers; propylene homopolymers; VLDPE (linear very low density polyethylene), LLDPE (linear low density polyethylene) from the viewpoint of water vapor barrier properties and sealing properties VLDPE and LLDPE are more preferred, such as linear a-olefin copolymers having 2 to 8 carbon atoms such as
- the thickness of the inner surface layer (c) which is useful in the present invention, it is preferable that the thickness of the inner surface layer (c) is in the range of 10 to 80 m. 12 to 55 / ⁇ ⁇ More preferably, it is the range. If the thickness of the inner surface layer (c) is less than the lower limit, the water vapor barrier property and the sealing strength tend to be insufficient, and if it exceeds the upper limit, the transparency tends to deteriorate.
- an adhesive resin layer can be provided as another intermediate layer as required.
- an oxygen-containing olefin (co) polymer can be used, and examples thereof include EVA, EEA, EAA, and acid-modified polyolefin.
- acid-modified polyolefin is a reaction product of an olefins homopolymer or copolymer with an unsaturated carboxylic acid, acid anhydride, ester, metal salt, etc., for example, acid-modified VLDPE, acid Examples include modified LLDPE and acid-modified EVA.
- the thickness of such other intermediate layer is preferably in the range of 0.5 to 5 ⁇ m.
- the heat-shrinkable multilayer film of the present invention comprises the aforementioned outer surface layer (a), the aforementioned first intermediate layer (bl), the aforementioned second intermediate layer (b2), and the aforementioned inner surface layer (A shrinkable multilayer film comprising c).
- the hot-shrinkable multilayer film of the present invention needs to have a hot-water shrinkage rate in the range of 3 to 45% at 90 ° C in the longitudinal direction and the transverse direction, respectively. If the hot water shrinkage rate is less than 3%, the packaging film located on the surface is insufficiently shrunk when the contents are filled and the package is heated with hot water, steam, dry heat, etc. Occurrence or adhesion to the contents becomes insufficient. On the other hand, when the hot water shrinkage rate exceeds 45%, the seal part deforms into a gather shape during bag making for bag bottoming or three-side sealing, and the appearance deteriorates and the bags are stacked and boxed. The bag overlaps and becomes difficult to work. Furthermore, when the contents are filled and heat-shrinked, the seal portion is easily broken.
- the hot water shrinkage rate is a value measured by a method as described in Examples described later.
- the oxygen permeability force at a temperature of 23 ° C and a relative humidity of 80% is preferably 100 cm 3 Zm 2 'dayatm or less.
- the oxygen permeability exceeds 100 cm 3 Zm 2 'dayatm the contents cannot be prevented from being deteriorated in acidity and the shelf life of the package tends to deteriorate.
- the temperature 40 ° C 90% RH to your Keru water vapor transmission rate (WVTR) force 25gZm 2 ' is preferably day or less tool 20 g / m 2 • More preferably less than day.
- WVTR Keru water vapor transmission rate
- a lubricant and an antistatic agent can be added to any of the layers described above.
- lubricants include behenic acid amide, oleic acid amide, and L force acid amide.
- a lubricant is preferably added in an amount of 0.05 to 2% by mass with respect to the coconut oil constituting any layer.
- antistatic agents include commercially available surfactants.
- an antistatic agent is preferably added in an amount of 0.05 to 2% by mass, more preferably 0.1 to 1% by mass, based on the resin constituting any layer.
- the other intermediate layers described above may be further arranged.
- stacking aspect of the heat-shrinkable multilayer film of this invention is shown. However, these are merely examples, and the present invention is not limited to these.
- an (oxygen-containing) polyolefin (copolymer) layer may be further disposed between the adhesive resin layer and the inner surface layer (c).
- the heat-shrinkable multilayer film of the present invention is produced by laminating and stretching the above layers as described later.
- the thickness of the heat-shrinkable multilayer film is more preferably in the range of 20 to 150 m, preferably in the range of 12 to 170 m.
- a heat-shrinkable multilayer film can be suitably used as a bag-shaped bouch packaging material, a bag packaging material, a pillow packaging material, a deep drawing packaging material, a tray packaging lid material, and the like.
- the heat-shrinkable multilayer film of the present invention uses a plurality of extruders and first co-presses an unstretched film.
- the film can be formed by subjecting it to a relaxation heat treatment after biaxial stretching by a known method such as taking out and tenter method.
- the heat-shrinkable multilayer film of the present invention is more preferably produced by an inflation method.
- an apparatus suitable for producing the heat-shrinkable multilayer film of the present invention and a method suitable for producing the heat-shrinkable multilayer film of the present invention will be described with reference to the drawings.
- FIG. 1 is a schematic view showing an apparatus suitable for producing the heat-shrinkable multilayer film of the present invention.
- an outer surface layer made of thermoplastic resin through an annular die 2 from the number of extruders 1 (only one is shown) corresponding to the number of laminated resin types constituting the multilayer film ( a), first intermediate layer (bl) made of polyamide-based resin, second intermediate layer (b2) made of saponified ethylene-vinyl acetate copolymer, and inner surface layer (c) made of polyolefin-based resin ) (A parison) 3a is coextruded, and the molten tubular body 3a immediately after coextrusion is not higher than the melting point of the main resin occupying each layer by the water bath 4, preferably 20 ° C or lower, more preferably 15 ° C.
- the film-like tubular body 3b (multilayer film) taken up is mainly filled with an opening agent represented by soybean oil, glycerin fatty acid ester, propylene glycol, etc. It introduce
- the film-like tubular body 3b is bubbled by the fluid air introduced between the pair of pinch rollers 7 and 8 to form the tubular film 3c during inflation, and the cold wind air ring 9 at 10 to 20 ° C.
- While cooling it is preferably 2.5 to 4 times, more preferably 2.5 to 3.5 times, particularly preferably 2.5 to 3.3 times in the vertical direction (MD) and the transverse direction (TD). , And biaxial stretching at the same time.
- the tubular body film 3d after drawing is drawn downward, and it is made into a bubble again by the fluid air introduced between the pair of pinch rollers 10 and 11 to form a tubular body film 3e that is being heat-treated. Hold on.
- steam is blown alone or together with air from the outlet 13 of the heat treatment cylinder 12, and the tubular film 3e during the heat treatment is preferably at 50 to 100 ° C, more preferably at 60 to 95 ° C.
- Heat treatment is performed for 1 to 20 seconds, preferably 1.5 to 10 seconds.
- the relaxation rate of the tubular film 3e during the heat treatment is 2 in the machine direction (MD) and the transverse direction (TD). Relax to ⁇ 40%, preferably 5-30%.
- the tubular film 3f after such relaxation heat treatment corresponds to the heat-shrinkable multilayer film of the present invention, and is wound around the winding tool 14.
- the draw ratio is preferably in the above range in each direction of MDZTD. If the draw ratio is less than the lower limit, the heat shrinkability of the film required after heat treatment cannot be obtained, and the uneven thickness of the film also increases, so that packaging suitability tends to be difficult to obtain.
- the relaxation heat treatment is the appearance of the film after the stretching process, that is, the generation of wrinkles due to a slight dimensional change, and the secondary process such as an automatic packaging machine or bag making process. This is carried out in order to obtain a heat shrinkable multilayer film having appropriate dimensional stability and excellent dimensional stability.
- the heat-shrinkable multilayer film of the present invention can be obtained more reliably.
- the heat-shrinkable multilayer film of the present invention produced by the method as described above includes, for example, chilled packaging of raw meat such as cows and pigs, pillow packaging (flow pack packaging), processed meat packaging, hard bacon, etc.
- Packaging for smoked foods such as cheese packaging, packaging with ceramic jars such as terrine, packaging for foods with bones, shrimp, salmon and other protrusions, packaging for fish and shellfish, raw meat, It is used for frozen packaging of poultry such as pigs and fish, especially in the field of packaging materials that require heat resistance and high temperature creep resistance, such as when suspending cooking by filling with ham or sausage.
- the tubular body 3a before or after the tubular body 3a is stretched, the tubular body 3a is irradiated with radiation by a known method. You can also. By irradiating such radiation, stretchability, heat resistance, mechanical strength, etc. are improved compared to those without irradiation. Moreover, such radiation irradiation has an effect of making the film excellent in stretch film-forming property and heat resistance by its moderate crosslinking effect. Further, in the present invention, it is advantageous in terms of handling property and high processing ability in producing a molded article that is preferably irradiated with an electron beam.
- the irradiation condition of such radiation is not particularly limited as long as it is appropriately set according to the intended application.
- the acceleration voltage is 150 to 500 kilovolts.
- Range, irradiation dose A range of 10-200 kilo gray (kGy) is preferred! / ⁇ .
- the inner surface and the Z or outer surface of the heat-shrinkable multilayer film of the present invention described above may be subjected to corona discharge treatment, plasma treatment, or flame treatment.
- corona discharge treatment of the inner surface is preferably used for providing meat adhesion.
- it is preferable to adjust the wetting tension of the surface layer in contact with the packaged body to be preferably 32 dynZcm or more, more preferably 34 dynZcm or more.
- the thickness of the laminated layer is from the outside to the inside and the thickness ratio shown in the forceps.
- Each resin is extruded by a plurality of extruders 1 so as to become VLDPE (16), and the melted resin is introduced into the annular die 2, where it is melt-bonded so as to have the above-described layer structure, Co-extruded.
- the melted tubular body 3a that also flowed out of the annular die 2 outlet force was taken up with a pinch roller 5 in a water bath 4 while being rapidly cooled to about 16 ° C. to form a film.
- the tubular body film 3c is in the form of bubble-shaped inflation, and the inflation method is performed while cooling with the air ring 9 at 15 to 20 ° C.
- MD machine direction
- TD transverse direction
- the stretched tubular film 3d is guided into a heat treatment tube 12 having a tube length of 2 m to form a bubble-shaped heat treatment tube 3e and heated to 68 ° C. by steam blown from the blowout port 13.
- heat treatment was performed for 2 seconds while relaxing 10% in the vertical direction and 15% in the horizontal direction to produce a heat-treated tubular film 3f (heat-shrinkable multilayer film).
- the thickness of the obtained heat-shrinkable multilayer film was 30 ⁇ m.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thickness of the obtained heat-condensable multilayer film was 30 m (Examples 2 to 5). Note that, under the film production conditions of Comparative Examples 1 and 3, bubble bursting occurred during inflation stretching, and the tubular body film 3f (heat-shrinkable multilayer film) could not be obtained. In addition, under the film production conditions of Comparative Example 2, bubbles pulsated during inflation stretching, becoming unstable, and the tubular body film 3f (heat-shrinkable multilayer film) could not be obtained.
- Film samples marked at a distance of 10 cm in the machine direction (longitudinal direction, MD) and the direction perpendicular to the machine direction (transverse direction, TD) of the obtained heat-shrinkable multilayer film were prepared at 90 ° C. After being immersed in water for 10 seconds, it was taken out and immediately cooled with room temperature water. After that, measure the distance marked, and display the percentage of the reduced value of 10 cm force with respect to the original length of 10 cm as a percentage did. One sample was tested five times, and the average value for each of the vertical and horizontal directions was displayed as the hot water shrinkage.
- haze value means that the smaller the value, the better the transparency, and the larger the value, the worse the transparency.
- a strip-shaped film sample with a width of 1 Omm and a length of 50 mm was stretched at a temperature of 23 ° C with a crosshead speed of 200 mm Zmin, and the film sample was broken.
- the stress (tensile breaking strength) and elongation (tensile elongation at break) were measured.
- the impact fracture energy of the film sample was measured using DROP—WEIGHT TEST ER RDT—5000 (manufactured by Rheometrics). That is, a film sample cut into a 10 cm ⁇ 10 cm square shape is sandwiched between two clamps (clamps) having an opening circle with a diameter of 3.8 cm in an atmosphere at a temperature of 5 ° C. 4kg weight with a hemispherical tip of 1.27cm in diameter on the film was dropped at a speed of 333.33 cm / sec, and the load and displacement applied to the falling plunger were measured with a sensor to obtain a displacement-load curve. On the curve, the energy (E (J)) until rupture was determined. Measurement is on the outer surface layer side of the film.
- the surface is set to the front side and the opposite side is set to the back side, and the average value is calculated by measuring five times for each sample.
- V measure the average film thickness t of each sample, and obtain the value of energy (E (J)) and
- oxygen permeation was performed under the conditions of a temperature of 23 ° C and 80% RH using an oxygen permeability measuring device OXTRAN (OX-TRAN2Z20; manufactured by Modern Control). The degree was measured.
- the heat-shrinkable multilayer films of the present invention are heat-shrinkable, strength, moldability, gas barrier property, water vapor barrier property, and visibility. It was confirmed that these characteristics were fully met.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thicknesses of the obtained heat-condensable multilayer films were 39 ⁇ m (Example 6), 40 m (Comparative Example 4), and 39 ⁇ m (Comparative Example 5), respectively.
- the hot shrinkage ratio, haze value, tensile breaking strength, tensile breaking elongation, impact breaking energy, oxygen permeability and water vapor permeability of the obtained heat shrinkable multilayer film were evaluated or measured by the above methods. The results obtained are shown in Table 5.
- the heat-shrinkable multilayer film obtained was subjected to the machine direction of the film by a heat seal method. Seal in two directions parallel to the vertical direction, cut one pinch part, and remove the bag of length (length in the direction perpendicular to the machine direction of the film) 350mm and width (length in the machine direction of the film) 150mm Created. Use a ham with a rectangular parallelepiped shape as the contents, and after vacuum packaging the ham with a margin of 15% (the circumference of the bag-shaped packaging film is 110% of the circumference of the contents) Thermal sterilization was performed for 10 minutes in a 90 ° C hot water bath, and the following criteria were evaluated.
- the obtained heat-shrinkable multilayer film was three-side sealed using a three-side seal bag making machine to produce a bag. Then, while visually observing the appearance of the seal portion, the seal strength was measured and evaluated according to the following criteria.
- the seal strength was 2kgZl 5mm width or more, and the seal part had a beautiful appearance.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thickness of the resulting heat-condensable multilayer film was 39 ⁇ m (Example 7) and 40 ⁇ m (Comparative Example 6), respectively. It was.
- the obtained heat-shrinkable multilayer film is folded into a folded width of 256mm or 362mm and a length of 700mm.
- One end of the film sample is sealed at the bottom of the bag, and the bag is made with about 5-7kg of thigh meat.
- hot water shrinkage was performed at 83-85 ° C for 1 second.
- For the package visually observe the shrinkage of the package ears (upper and lower edges) (that is, the presence or absence of remaining voids that cause meat juice accumulation) and the tension of the package at the filling part.
- the evaluation was based on the following criteria. A: The ears were sufficiently contracted and the package was tight.
- Example 7 For each heat-shrinkable multilayer film obtained in Example 7 and Comparative Example 6, the suitability of the heat-shrinkable multilayer film for knock packaging was evaluated by the above method.
- the ears were sufficiently contracted, the package was tight and the appearance was good (evaluation; A).
- the shrinkage of the ear part was insufficient and the tension of the package was insufficient (evaluation; C). Therefore, it was confirmed that the heat-shrinkable multilayer film of the present invention has excellent bag packaging suitability.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thickness of the obtained heat-condensable multilayer film was 39 m (Example 8).
- Both ears (pinch lines) of the obtained heat-shrinkable multilayer film were slit to form a flat film sample having a width of 320 mm.
- Semi-circular polystyrene tray with dimensions of 25 mm (X 190 mm) width adjacent to the diameter of the semi-circular part with a diameter of 19 Omm The film sample was packaged on a CEP3000 pillow packaging machine manufactured by Ibaraki Seiki Co., Ltd. at a speed of 35 shots Z so that the circumference was 290 mm and the cut length was 220 mm.
- 170 ° C air was blown for 5 seconds in a shrinking tunnel made by K & U System Co., Ltd. to shrink it.
- the appearance of the package was visually observed and evaluated according to the following criteria.
- Example 8 For the heat-shrinkable multilayer film obtained in Example 8, the suitability of the heat-shrinkable multilayer film for pillow packaging was evaluated by the above method. As a result, the heat-shrinkable multilayer film of the present invention (Example 8) was obtained.
- the package used had a beautiful appearance with no deformation of the tray, which makes it difficult to see the surplus portion of the film (dog ear) from the arc of the tray when the semicircular tray is viewed from directly above ( Evaluation; A). Therefore, it was confirmed that the heat-shrinkable multilayer film of the present invention has excellent pillow packaging ability.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thickness of the obtained heat-condensable multilayer film was 40 ⁇ m (Example 9) and 40 m (Comparative Example 7), respectively.
- the hot water shrinkage rate, haze value, impact fracture energy, oxygen permeability and water vapor permeability of the obtained heat shrinkable multilayer film were evaluated or measured by the above methods. The results obtained are shown in Table 6.
- Weight change rate (%) [(W -W) / W] X100 ⁇ ⁇ (3)
- Length change rate (%) [(L '-V) / V] ⁇ 100 ⁇ , (4)
- V Length of package sample before hanging cook
- V Length of package sample after hanging cook
- Waist circumference deformation rate (%) [(L “-L") / L "]" 100 ⁇ '(5)
- Example 9 For each heat-shrinkable multilayer film obtained in Example 9 and Comparative Example 7, the high-temperature creep resistance and sausage-filled hanging cookability of the heat-shrinkable multilayer film were evaluated by the above methods. The results obtained are shown in Table 6.
- the heat-shrinkable multilayer film of the present invention (Example 9) is superior in heat-resistant creep resistance to the heat-shrinkable multilayer film obtained in Comparative Example 7. It was. Therefore, it was confirmed that the heat-shrinkable multilayer film of the present invention is particularly excellent in heat resistance and high-temperature creep resistance.
- the heat-shrinkable multilayer film of the present invention (Example 9) In the package used, the length change rate and the waist deformation rate in the evaluation of suitability for sausage-filled hanging cook were small. Therefore, it was confirmed that the heat-shrinkable multilayer film of the present invention has excellent sausage-filled hanging cookability.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the thickness of the obtained heat-condensable multilayer film was 90 ⁇ m (Example 10) and 90 m (Comparative Examples 8 and 9), respectively.
- the heat shrinkage ratio, haze value, tensile breaking strength, tensile breaking elongation, impact fracture energy, high temperature creep resistance, oxygen permeability and water vapor permeability of the obtained heat shrinkable multilayer film are as described above. The method was evaluated or measured. The results obtained are shown in Table 7.
- Deep-draw molding (mold: 113 X 167 X 60mm) with Mulchback molding machine (R250), filled with beef leg meat (about 400g), deaerated and packed, 90 ° C, 10 seconds, heat A package sample was obtained by shrinking in water. The package sample was visually observed and evaluated according to the following criteria.
- A The film was contracted, tightly fitted, and the package was tight.
- the heat-shrinkable multilayer film of the present invention (Example 10) was capable of normal deep drawing.
- the heat-shrinkable multilayer film obtained in Comparative Example 8 since the (relaxation) heat treatment was not performed at the time of film production, it was impossible to draw.
- the package using the heat-shrinkable multilayer film of the present invention (Example 10) the film was contracted, tightly fitted to the contents, and the package had good tension.
- the packaging body using the heat-shrinkable multilayer film obtained in Comparative Example 8 was observed to be in a state where the film contracted insufficiently, the tension was insufficient, and the contents (meat) moved slightly. It was done. Therefore, it was confirmed that the heat-shrinkable multilayer film of the present invention has excellent deep drawability.
- a heat treated tubular film 3f (heat-shrinkable multilayer film) was obtained in the same manner as in Example 1 except that the film production conditions were changed as shown in Table 3.
- the resulting heat-condensable multilayer film had a thickness of 27 m (Example 11). Further, the thermal shrinkage, dry heat shrinkage, haze value, tensile breaking strength, tensile breaking elongation, impact breaking energy, oxygen permeability and water vapor permeability of the obtained heat shrinkable multilayer film were evaluated by the above methods. Or measured. The results obtained are shown in Table 8.
- One ear (pinch line) of the obtained heat-shrinkable multilayer film was cut and opened to obtain a flat film sample having a width of 840 mm.
- a film sample as a lid material, as a tray, polyethylene Z adhesive resin Z ethylene acetate butyl copolymer saponified product Z adhesive resin Z expanded polystyrene (each layer thickness is 20 ⁇ m / 7 ⁇ m / 300 ⁇ m, respectively) m) (dimensions: length 225mm x width 155mm x height 40mm), using 200g of minced meat as the contents, with the polyethylene side of the tray and the inner resin of the film sample facing each other, ROSS Ridging was performed with PERFORMED TRAY MACHINEINPACK NEMA4.
- the sealing temperature during molding was 110 ° C, and the number of shots was 20 packs Z.
- the package thus obtained was stored in a refrigerator for 1 day and the appearance was evaluated according to the following criteria.
- Acid system is excessive, cm / m Z, day atm
- the heat-shrinkable multilayer film of the present invention comprises a bag-shaped bouch packaging material and a bag packaging material.
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- Engineering & Computer Science (AREA)
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- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Wrappers (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/223,958 US7993713B2 (en) | 2006-02-16 | 2007-01-15 | Heat shrinkable multilayer film and packaging material using the same |
BRPI0707768-8A BRPI0707768A2 (pt) | 2006-02-16 | 2007-01-15 | filme de méltiplas camadas termo-contrÁtil, e, materiais de embalagem para bolsa, de embalagem para saco, de embalagem para embalagem de travesseiro, de embalagem para comformaÇço por estampagem profunda e de tampa para embalagem de bandeja |
NZ570359A NZ570359A (en) | 2006-02-16 | 2007-01-15 | Heat shrinkable multilayer film for packaging |
CA 2642503 CA2642503C (en) | 2006-02-16 | 2007-01-15 | Heat shrinkable multilayer film and packaging material using the same |
AU2007216113A AU2007216113C1 (en) | 2006-02-16 | 2007-01-15 | Heat shrinkable multilayer film and packaging material using same |
JP2008500421A JP5013488B2 (ja) | 2006-02-16 | 2007-01-15 | 熱収縮性多層フィルム及びそれを用いた包装材 |
EP20070706741 EP1985444B1 (en) | 2006-02-16 | 2007-01-15 | Heat shrinkable multilayer film and packaging material using same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006-039434 | 2006-02-16 | ||
JP2006039434 | 2006-02-16 |
Publications (1)
Publication Number | Publication Date |
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WO2007094144A1 true WO2007094144A1 (ja) | 2007-08-23 |
Family
ID=38371332
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/050407 WO2007094144A1 (ja) | 2006-02-16 | 2007-01-15 | 熱収縮性多層フィルム及びそれを用いた包装材 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7993713B2 (ja) |
EP (1) | EP1985444B1 (ja) |
JP (1) | JP5013488B2 (ja) |
AU (1) | AU2007216113C1 (ja) |
BR (1) | BRPI0707768A2 (ja) |
CA (1) | CA2642503C (ja) |
NZ (1) | NZ570359A (ja) |
WO (1) | WO2007094144A1 (ja) |
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WO2009154263A1 (ja) * | 2008-06-18 | 2009-12-23 | 宇部興産株式会社 | 突起部分を有する物品用包装フィルム |
JP2010070217A (ja) * | 2008-09-18 | 2010-04-02 | Mitsubishi Plastics Inc | 易開封性深絞り包装体 |
WO2011083707A1 (en) | 2010-01-08 | 2011-07-14 | Kureha Corporation | Heat-shrinkable multi-layer film for deep-draw forming, and process for production thereof |
JP2014084157A (ja) * | 2012-10-25 | 2014-05-12 | Kyoraku Co Ltd | 容器包装体 |
WO2016068109A1 (ja) * | 2014-10-28 | 2016-05-06 | 株式会社クレハ | スキンパック用熱収縮性延伸多層フィルム、それを用いたスキンパック包装体、及びスキンパック用熱収縮性延伸多層フィルムの製造方法 |
WO2018088152A1 (ja) * | 2016-11-09 | 2018-05-17 | 株式会社クレハ | 熱収縮性多層フィルム |
JP2020536806A (ja) * | 2017-09-19 | 2020-12-17 | ボレガード アーエス | ミクロフィブリル化セルロース包装用のコンパクトシステム |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2897795B1 (fr) † | 2006-02-28 | 2010-07-30 | Linpac Plastics Pontivy | Procede de fabrication d'un film multicouche |
EP2236285B2 (en) * | 2007-12-17 | 2019-05-08 | Kureha Corporation | Thermally shrinkable laminate film for deep drawing, packaged article, and method for packaging of cheese |
EP2527142A1 (en) | 2011-05-24 | 2012-11-28 | Cryovac, Inc. | Multilayer polyester film for ready meals |
EP2790918A1 (de) * | 2011-12-15 | 2014-10-22 | Windmöller & Hölscher KG | Folienprodukt für die verpackung von produkten in gesiegelten folienverpackungen |
US9624019B2 (en) | 2012-11-09 | 2017-04-18 | Winpak Films Inc. | High oxygen and water barrier multilayer film |
ES2922375T3 (es) | 2013-05-02 | 2022-09-14 | Kureha Corp | Película multicapa termocontráctil |
JP2016147373A (ja) | 2013-05-02 | 2016-08-18 | 株式会社クレハ | 熱収縮性多層フィルム |
EP3063004B1 (en) | 2013-11-01 | 2018-02-28 | Cryovac, Inc. | Delamination-resistant heat-shrinkable multilayer oxygen barrier film containing polyester |
BR112018016530B1 (pt) | 2016-02-15 | 2022-12-20 | Macro Technology Inc | Filme multicamada |
RU2660836C1 (ru) | 2017-09-29 | 2018-07-10 | Общество С Ограниченной Ответственностью "Производственно-Коммерческая Фирма "Атлантис-Пак" | Барьерная пленка с улучшенной формуемостью и низкой термической усадкой при температуре формования и способ ее получения |
WO2020225138A1 (de) | 2019-05-03 | 2020-11-12 | Kuhne Anlagenbau Gmbh | Verfahren zur herstellung einer mehrschichtigen verbundfolie, mehrschichtige verbundfolie und deren verwendung |
DE102020111879A1 (de) | 2020-04-30 | 2021-11-04 | Kuhne Anlagenbau Gmbh | Verfahren zur Herstellung einer mehrschichtigen Verbundfolie, mehrschichtige Verbundfolie und deren Verwendung |
DE102023110789A1 (de) | 2022-05-03 | 2023-11-09 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Verfahren zum Einstellen von Schrumpfeigenschaften eines Kunststoffmaterials, Kunststoffformgebende Anlage und Kunststofffolie |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61188142A (ja) | 1985-02-16 | 1986-08-21 | 三菱樹脂株式会社 | 熱収縮性複合延伸フイルム |
JPS6241261A (ja) | 1985-08-19 | 1987-02-23 | Mitsubishi Chem Ind Ltd | 熱収縮性ポリアミドフイルム |
JPH11300914A (ja) * | 1998-04-24 | 1999-11-02 | Kureha Chem Ind Co Ltd | 熱収縮性多層フィルム |
JP2001354787A (ja) | 2000-06-14 | 2001-12-25 | Unitika Ltd | 熱収縮性ポリアミドフィルム |
EP1190847A1 (en) | 2000-09-26 | 2002-03-27 | Kureha Kagaku Kogyo Kabushiki Kaisha | Heat-shrinkable multilayer film |
JP2002172746A (ja) * | 2000-09-26 | 2002-06-18 | Kureha Chem Ind Co Ltd | 熱収縮性多層フィルム |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH1044366D (ja) | 1965-07-19 | |||
DE1918754A1 (de) | 1969-04-14 | 1970-10-15 | Bayer Ag | Verfahren zur Herstellung anorganischer Fasern |
CN1300250C (zh) | 2004-07-14 | 2007-02-14 | 王清峰 | 玻化抛光地板砖防污剂及其制备方法 |
-
2007
- 2007-01-15 BR BRPI0707768-8A patent/BRPI0707768A2/pt not_active Application Discontinuation
- 2007-01-15 CA CA 2642503 patent/CA2642503C/en active Active
- 2007-01-15 AU AU2007216113A patent/AU2007216113C1/en active Active
- 2007-01-15 WO PCT/JP2007/050407 patent/WO2007094144A1/ja active Search and Examination
- 2007-01-15 JP JP2008500421A patent/JP5013488B2/ja active Active
- 2007-01-15 NZ NZ570359A patent/NZ570359A/en unknown
- 2007-01-15 EP EP20070706741 patent/EP1985444B1/en not_active Revoked
- 2007-01-15 US US12/223,958 patent/US7993713B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61188142A (ja) | 1985-02-16 | 1986-08-21 | 三菱樹脂株式会社 | 熱収縮性複合延伸フイルム |
JPS6241261A (ja) | 1985-08-19 | 1987-02-23 | Mitsubishi Chem Ind Ltd | 熱収縮性ポリアミドフイルム |
JPH11300914A (ja) * | 1998-04-24 | 1999-11-02 | Kureha Chem Ind Co Ltd | 熱収縮性多層フィルム |
JP2001354787A (ja) | 2000-06-14 | 2001-12-25 | Unitika Ltd | 熱収縮性ポリアミドフィルム |
EP1190847A1 (en) | 2000-09-26 | 2002-03-27 | Kureha Kagaku Kogyo Kabushiki Kaisha | Heat-shrinkable multilayer film |
JP2002172746A (ja) * | 2000-09-26 | 2002-06-18 | Kureha Chem Ind Co Ltd | 熱収縮性多層フィルム |
Non-Patent Citations (4)
Title |
---|
ASAHI KASEI AMIDASU KABUSHIKI KAISHA: "Plastics", HENSHUBU, PLASTIC DATA BOOK, 1ST ED., 1ST PRINT, 1 December 1999 (1999-12-01), pages 502 - 503, XP003017127 * |
MIYASAKA K.: "Plastic Jiten, 2nd print", EVOH GAS BARRIER SEI, no. 2, 20 September 1997 (1997-09-20), pages 402 - 413, XP003017126 * |
See also references of EP1985444A4 |
SOGA K.: "Metallocene Shokubai to Jisedai Polymer no Tenbo", FUKYUBAN, 1ST PRINT, 25 December 2001 (2001-12-25), pages 100,101,256, XP003017128 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2009154263A1 (ja) * | 2008-06-18 | 2009-12-23 | 宇部興産株式会社 | 突起部分を有する物品用包装フィルム |
JP2010070217A (ja) * | 2008-09-18 | 2010-04-02 | Mitsubishi Plastics Inc | 易開封性深絞り包装体 |
WO2011083707A1 (en) | 2010-01-08 | 2011-07-14 | Kureha Corporation | Heat-shrinkable multi-layer film for deep-draw forming, and process for production thereof |
JP2013516338A (ja) * | 2010-01-08 | 2013-05-13 | 株式会社クレハ | 深絞り成形用熱収縮性多層フィルムおよびその製造方法 |
US9352395B2 (en) | 2010-01-08 | 2016-05-31 | Kureha Corporation | Heat-shrinkable multi-layer film for deep-draw forming, and process for production thereof |
JP2014084157A (ja) * | 2012-10-25 | 2014-05-12 | Kyoraku Co Ltd | 容器包装体 |
WO2016068109A1 (ja) * | 2014-10-28 | 2016-05-06 | 株式会社クレハ | スキンパック用熱収縮性延伸多層フィルム、それを用いたスキンパック包装体、及びスキンパック用熱収縮性延伸多層フィルムの製造方法 |
JP2016084165A (ja) * | 2014-10-28 | 2016-05-19 | 株式会社クレハ | スキンパック用熱収縮性延伸多層フィルム、それを用いたスキンパック包装体、及びスキンパック用熱収縮性延伸多層フィルムの製造方法 |
WO2018088152A1 (ja) * | 2016-11-09 | 2018-05-17 | 株式会社クレハ | 熱収縮性多層フィルム |
US11453207B2 (en) | 2016-11-09 | 2022-09-27 | Kureha Corporation | Heat-shrinkable multilayer film |
JP2020536806A (ja) * | 2017-09-19 | 2020-12-17 | ボレガード アーエス | ミクロフィブリル化セルロース包装用のコンパクトシステム |
Also Published As
Publication number | Publication date |
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JP5013488B2 (ja) | 2012-08-29 |
NZ570359A (en) | 2010-09-30 |
US20090136726A1 (en) | 2009-05-28 |
US7993713B2 (en) | 2011-08-09 |
EP1985444B1 (en) | 2014-03-12 |
AU2007216113A1 (en) | 2007-08-23 |
EP1985444A4 (en) | 2009-03-04 |
CA2642503C (en) | 2015-03-24 |
AU2007216113B2 (en) | 2011-03-24 |
EP1985444A1 (en) | 2008-10-29 |
JPWO2007094144A1 (ja) | 2009-07-02 |
BRPI0707768A2 (pt) | 2011-05-10 |
CA2642503A1 (en) | 2007-08-23 |
AU2007216113C1 (en) | 2013-07-04 |
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