WO2004018205A1 - 包装用熱収縮多層ポリエステルフィルム - Google Patents
包装用熱収縮多層ポリエステルフィルム Download PDFInfo
- Publication number
- WO2004018205A1 WO2004018205A1 PCT/JP2003/010290 JP0310290W WO2004018205A1 WO 2004018205 A1 WO2004018205 A1 WO 2004018205A1 JP 0310290 W JP0310290 W JP 0310290W WO 2004018205 A1 WO2004018205 A1 WO 2004018205A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyester
- acid
- component
- film
- glycol
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
Definitions
- the present invention relates to a heat-shrinkable multilayer polyester film used for packaging an article. More specifically, it relates to a multilayer polyester film having excellent durability, dimensional stability, mechanical strength, oil resistance, and solvent resistance and useful as a shrink wrapping material having excellent printability. Background art
- non-polyester shrink films such as polyester shrink film / polystyrene and polychlorinated vinyl have been used for shrink packaging applications such as bottle labels.
- the polyester film-based shrink film is superior to the non-polyester-based shrink film in solvent resistance, durability, dimensional stability, mechanical strength, and the like.
- the use of an amorphous raw material in a polyester-based shrink film provides excellent shrinkability and adhesiveness with a solvent, but the lack of mechanical strength is a drawback, and its improvement is desired.
- the inventor of the present invention has conducted studies with the object of solving the above-mentioned drawbacks of the polyester-based shrinkable film.
- the present invention has been found that a heat-shrinkable polyester film having good mechanical strength and adhesiveness can be obtained by increasing the affinity between the surface layer and the core layer by using a copolymer or a mixture thereof that is close to each other. .
- the heat-shrinkable multilayer polyester film for packaging according to the present invention comprises at least three layers of a multilayer film produced by a co-extrusion film forming method, wherein one surface layer (polyester layer 1) and the other surface layer (polyester layer 2) are
- the main component is a molten mixture of polyester A and polyester B.
- the terephthalic acid component in the mixture is at least 80 mol% of the total acid component, and the ethylene glycol component is at least 80 mol% of the total glycol component.
- the contraction rate in the main contraction direction is 35% or more, and the contraction rate in the direction perpendicular to the main contraction direction is 5% or less.
- polyester A has an acid component of ⁇ terephthalic acid '' and a molar ratio of ⁇ naphthalenedicarboxylic acid or isophthalic acid '' of 95 Z 5 to 80/20, and ⁇ ethylene glycol '' is the main glycol component.
- polyester B has an acid component having a molar ratio of terephthalic acid and isophthalic acid of 95 to 60 to 40 Z40, and tetramethylene glycol as the main glycol component.
- Polyester C has a molar ratio of terephthalic acid to isophthalic acid of 9555 to 80/20 as the acid component, and ethylene glycol is the main glycol component. Polyes Tell.
- the surface layers (polyester layer 1 and polyester layer 2) of the multilayer polyester film of the present invention have an acid component of “terephthalic acid” and “naphthalenedicarboxylic acid or isophthalic acid” in a molar ratio of 95 Z 5.
- the molar ratio of polyester A mainly composed of ethylene glycol as the glycol component and terephthalic acid and isophthalic acid as the glycol component is 90/10.
- the main component is a melt mixture with polyester B having a tetraglycol content of "tetramethylene glycol", and the terephthalic acid component in the mixture is 80 mol% of the total acid component.
- the ethylene glycol component is at least 80 mol% of the polyester in the total glycol component.
- One embodiment of the polyester A is a polyester containing terephthalic acid and naphthalenedicarboxylic acid as acid components and ethylene glycol as a glycol component in the above-mentioned ratio, and a known production method, that is, dimethyl terephthalate and 2, 6 Mono-naphthalenedicarboxylic acid Transesterification from dimethyl ruponate and ethylene glycol, or direct esterification of terephthalic acid and 2,6-naphthalenedicarboxylic acid with ethylene glycol to obtain an oligomer, followed by melt polymerization
- other components can be copolymerized as long as the effects of the present invention are not impaired.
- Acid components such as adipic acid, azelaic acid sebacic acid, decanedicarboxylic acid, etc., diphenyloxyethanedicarboxylic acid, diphenyldicarboxylic acid, diphenyletherdicarboxylic acid, etc.
- aromatic dicarboxylic acids such as anthracene dicarponic acid. You.
- glycol component examples include aliphatic diols such as diethylene glycol, propylene glycol, neopentylene diol, butanediol, pentanediol, and hexanediol; polyalkylenes such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol. Glycols are preferred. These can be used alone or in combination of two or more.
- the amount of the naphthalenedicarboxylic acid component in the polyester A is 5 to 20 mol%, preferably 7 to 18 mol%, more preferably 9 to 15 mol% in the total acid component.
- the amount of naphthene dicarbonic acid is less than 5 mol%, the crystallinity of the film will be too high, and the sealing properties of the solvent required for shrink wrapping will be insufficient. On the other hand, if it exceeds 20 mol%, it is difficult to handle during drying and film formation due to a decrease in melting point and progress of amorphousness, which is not suitable for practical use.
- polyester A is a polyester containing terephthalic acid and isophtalic acid as an acid component and ethylene glycol as a dalicol component in the above-mentioned ratio, and a known production method, namely, dimethyl terephthalate and dimethyl isophthalate. It is obtained by subjecting an oligomer to a transesterification method from ethylene glycol or a direct esterification of terephthalic acid and isophthalic acid with ethylene glycol, followed by melt polymerization. Other components can be copolymerized as long as the effect is not impaired.
- Acid components such as adipic acid, azelaic acid, sebacic acid, decanedicarboxylic acid, and other aliphatic dicarboxylic acids, 2,6-naphthalene dicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,5
- aromatic dicarboxylic acids such as mononaphthylenedicarboxylic acid, diphenyloxyethanedicarboxylic acid, diphenyldicarbonic acid, diphenyletherdicarboxylic acid, and anthracenedicarboxylic acid.
- Dalicol components include diethylene dalicol, propylene glycol, neopentylene glycol, butanediol, Aliphatic diols such as pentanediol and hexanediol, and polyalkylene glycols such as polyethylene glycol, polypropylene glycol and polytetramethylene glycol are preferred. These can be used alone or in combination of two or more.
- the amount of the isophthalic acid component in the polyester A is 5 to 20% by mole, preferably 7 to 19% by mole, and more preferably 10 to 18% by mole of the total acid component. If the amount of isophthalic acid is less than 5 mol%, the crystallinity of the film will be too high, and the sealing property with the solvent required for shrink wrapping will be insufficient. On the other hand, if it exceeds 20 mol%, it is difficult to handle during drying and film formation due to a decrease in melting point and progress of amorphousness, which is not suitable for practical use. '
- the amount of the ethylene glycol component in the polyester A is such that the proportion of the ethylene glycol component in the total glycol component in the mixture with the polyester B is at least 80 mol%. Therefore, the amount of the ethylene glycol component in the polyester A is determined by the mixing ratio of the polyester A and the polyester B, but is preferably at least 80 mol%, more preferably at least 90 mol%, and particularly preferably substantially at least 90 mol%. In general, it is 100 mol%. Substantially 100 mol% means a ratio including a glycol component (eg, diethylene glycol) other than ethylene glycol which is by-produced in trace amounts during the polymerization.
- a glycol component eg, diethylene glycol
- the polyester B in the present invention contains terephthalic acid and isophthalic acid as an acid component and tetramethylene glycol as a dalicol component as main components. It is obtained by transesterification from methylene glycol or by direct esterification with terephthalic acid and isophthalic acid, and tetramethylene glycol, followed by melt polymerization. Other components can be copolymerized with the polyester B as long as the effects of the present invention are not impaired. Adipic acid, azelaic acid, sebacic acid
- Aliphatic dicarboxylic acids such as decane dicarboxylic acid, phthalic acid, 2,6-naphthalene dicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,5-naphthylene dicarboxylic acid, diphenoxyethane dicarboxylic acid, diph
- aromatic dicarboxylic acids such as enyl dicarboxylic acid, diphenyl ether dicarboxylic acid, and anthracene dicarboxylic acid.
- glycol component examples include aliphatic diols such as diethylene glycol, propylene glycol, neopentylene glycol, butanediol, pentanediol, and hexanediol, polyethylene glycol, polypropylene glycol, and polytetramethylene glycol.
- Polyalkylene glycol can be preferably mentioned. These can be used alone or in combination of two or more.
- the amount of isophthalic acid varies from 10 to 40 mol%, preferably from 12 to 37 mol%, more preferably from 15 to 33 mol%. If the amount of isophthalic acid is less than 10 mol%, the crystallinity of the surface layer is increased, and the sealing property with a solvent required for shrink wrapping is insufficient. On the other hand, if it exceeds 40 mol%, it is difficult to handle during drying and film formation due to a decrease in melting point and progress of amorphousness, which is not suitable for practical use.
- the amount of the tetramethylene glycol component in the polyester B is such that the proportion of the ethylene daricol component in the total dalicol component in the mixture with the polyester A is at least 80 mol%. Accordingly, the amount of the tetramethylene glycol component in the glycol component of the polyester B is determined by the mixing ratio of the polyester A and the polyester B, but is preferably at least 80 mol%, more preferably at least 90 mol%. Yes, particularly preferably substantially 100 mol%.
- substantially 100 mol% means a ratio including a dalicol component other than tetramethylene darikol, which is produced as a very small amount in the course of polymerization.
- polyester C In the multilayer film of the present invention, at least one of the core layers, polyester C And a polyester layer 3 containing as a main component.
- This polyester C is mainly composed of terephthalic acid and isophtalic acid as an acid component and ethylene glycol as a glycol component.
- An oligomer is obtained by a reaction method or direct esterification with terephthalic acid and isophthalic acid, and ethylene glycol, followed by melt polymerization.
- Other components can be copolymerized with the polyester C as long as the effects of the present invention are not impaired.
- the acid component includes aliphatic dicarboxylic acids such as adipic acid, azelaic acid sebacic acid, decanedicarboxylic acid, phthalic acid, 2,6-naphthalene dicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,5 —
- aromatic dicarboxylic acids such as naphthalene dicarboxylic acid, diphenyl ethane dicarboxylic acid, diphenyl dicarbonic acid, diphenyl ether dicarboxylic acid and anthracene dicarboxylic acid.
- glycol component examples include aliphatic diols such as diethylene diol, propylene glycol, neopentylene glycol, butanediol, pentanediol, and hexanediol; and polyalcohols such as polyethylene glycol, polypropylene glycol, and polytetramethylene glycol.
- Kilen glycol can be preferably mentioned. These can be used alone or in combination of two or more.
- the amount of isophthalic acid in polyester C is from 5 to 20 mol%, preferably from 7 to 17%, more preferably from 10 to 15%. If the amount of isophthalic acid exceeds 20 mol%, the amorphous property of the core layer is increased and the mechanical strength is lowered, which is not preferable. On the other hand, if it is less than 5 mol%, crystallization is likely to occur, causing a decrease in tear strength.
- the amount of ethyleneglycol / component in polyester C is preferably at least 80 mol%. Above, more preferably 90 mol% or more, and particularly preferably substantially 100 mol%.
- substantially 100 mol% means a ratio including a glycol component (eg, diethylene glycol) other than ethylene dalicol which is a by-product in the course of polymerization.
- the polyester constituting the polyester layer 1 and the polyester layer 2 in the present invention is a mixture (blend) of the polyester A and the polyester B.
- the mixing ratio is such that the terephthalic acid component is 80% of the total acid components in each mixture. Mol% or more, and the proportion of the ethylene glycol component in all the glycol components is determined to be 80 mol% or more. If the proportion of the ethylene terephthalate component is less than 80 mol%, the affinity for the polyester C constituting the core layer is deteriorated, and delamination may occur after the solvent bonding.
- the mixing ratio of the polyester A and the polyester B varies depending on the component ratio of the polyester A and the polyester B. For example, when the weight ratio of the polyester A / polyester B is in the range of 70 Z 30 to 95/5. It is preferable that the thickness be in the range of 800 to 90 Z10.
- polyester layer 1 and the polyester layer 2 may be polyesters having the same composition or may be different as long as the component ratio of the polyester is in the above range, but in order to efficiently produce a multilayer polyester film. It is preferable that the polyesters have the same composition.
- the multilayer polyester film of the present invention preferably has a heat of crystal fusion ⁇ in the range of 20 to 60 J / g, more preferably 25 to 55 J / g, and particularly preferably 30 to 50 J / g.
- the size of AHm is a measure of the abundance of crystals in the film (oriented crystals during film formation and cold crystallization during heating). If this ⁇ is less than 30 J / g, it means that the film is close to amorphous, and the film may have insufficient mechanical strength. On the other hand, if it exceeds 60 J Zg, the crystallinity will be too high and bow I crack The physical properties essential for packaging materials, such as strength, may be reduced.
- the polyester layer 1 and / or the polyester layer 2 in the present invention contain a lubricant having an average particle size of 2.5 / im or less in the composition.
- the lubricant may be inorganic or organic, but inorganic is preferred.
- the inorganic lubricant include silica, alumina, titanium dioxide, calcium carbonate, and barium sulfate, and examples of the organic lubricant include silicone particles.
- the average particle size is preferably 2.5 m or less. If the average particle size exceeds 2.5 m, the transparency of the multilayer polyester film is impaired, which is not preferable as a packaging material.
- the above lubricant can also be blended in the polyester layer 3.
- the haze (haze) of the multilayer polyester film of the present invention is preferably 15% or less at a thickness of 40 m, and particularly preferably 10% or less. preferable.
- the amount of the lubricant to be added depends on the particle size, but is preferably selected within a range that does not adversely affect the winding property and the transparency of the film.
- polyester A As the polymer for the surface layer of the polyester layer 1 and the polyester layer 2 in the present invention, a mixture of the above-mentioned polyester A and polyester B pellets by, for example, a photo blender can be used.
- Polyester C can be used as the polymer for the core layer). Polyester A, Polyester B, and Polyester C are each dried, melted in an extruder, discharged from a die, formed into a multilayer film, stretched and heat-set to form a multilayer polyester film. .
- the heat setting temperature of the film is preferably around the higher Tg (glass transition temperature) of the polyester constituting polyester layer 1 and polyester layer 2. If the heat setting temperature is too high, the heat shrinkage of the product film will decrease, losing its original function as heat shrink wrapping.
- the shrinkage rate in hot water in the main shrinkage direction must be 35% or more and the shrinkage rate in the direction perpendicular to the main shrinkage direction must be 5% or less.
- the shrinkage ratio is in this range, the properties when used for heat shrink wrapping become good.
- the shrinkage was measured in the film plane direction according to JIS-Z179.
- the direction of the largest shrinkage among the longitudinal direction of the film and the width direction orthogonal thereto was defined as the main shrinkage direction.
- the shrinkage ratio in the main shrinkage direction in the warm water at 80 ° C. is preferably 35 to 55%. Further, it is preferable that the contraction rate in the main contraction direction in hot water at 70 ° C. is 5 to 30%.
- thermal shrinkage of the above-mentioned shrinkage ratio occurs only in either the longitudinal direction or the width direction of the multilayer polyester film, but in reality, it is perpendicular to the main shrinkage direction (longitudinal or width direction). Some heat shrinkage is also seen in the direction.
- the thermal shrinkage in the direction perpendicular to the main shrinkage direction needs to be 5% or less.
- Uniaxial stretching in the main shrinkage direction is most suitable for imparting such uniaxial shrinkage, but the uniaxially stretched film has the polymer's orientation characteristics and, in addition, the tearability is reduced. In some cases, it is preferable to stretch even a little in the direction perpendicular to the main shrinkage direction. In this case, the stretching ratio in the direction perpendicular to the main shrinkage direction is preferably at most about 2 times, but it may be appropriately selected from the range of 1.0 to 2.0 times depending on the application and required characteristics.
- the thickness of the multilayer polyester film of the present invention is preferably from 20 to 70 m, more preferably from 30 to 60 m, and particularly preferably from 35 to 55 m. If the thickness is too thin (for example, less than 20 m), the stiffness (rigidity) of the film will be weakened, and the film may be bent when attached to the label, resulting in defective products. Conversely, if the thickness is too large (for example, more than 70 m), the film is too stiff, making it difficult to handle during processing.
- the layer structure of the multilayer polyester film of the present invention is most preferably a three-layer structure in which polyester layer 1 / polyester layer 3 / polyester layer 2 are laminated in this order.
- the core layer can be sandwiched between layers having solvent sealing properties,
- Such a laminated structure can be formed by a co-extrusion method using two extruders and a multi-manifold die or a feed block, which is preferable in terms of productivity.
- the thickness was measured at any 50 locations in the width direction perpendicular to the continuous film forming direction of the film and at any 50 locations in the continuous film forming direction near the center of the film width.
- the number average value of 100 points is defined as the film thickness.
- the thickness unevenness in the width and longitudinal directions of the film to be measured is within +20 to 120% of the average thickness.
- the layer configuration was determined by embedding the film in epoxy resin, slicing it with a glass blade, and observing the cross section under a polarizing microscope.
- PET unit amount Polyethylene terephthalate component amount
- the main shrinkage direction and the heat shrinkage in hot water in a direction perpendicular to the main shrinkage direction were measured when treated in warm water at 80 for 10 seconds and in 70 ° C warm water for 10 seconds.
- the average of the number of measurement points (N) 3 was taken as the measured value.
- the shrinkage rate was measured in the continuous film forming direction (also called the longitudinal direction) and the width direction (also called the horizontal direction) orthogonal to the film, and the direction with the largest shrinkage was defined as the main shrinkage direction. .
- ⁇ At least 20 OMPa in the continuous film forming direction, and at least 450 MPa in the direction perpendicular to the “continuous” film forming method.
- the film was embedded in an epoxy resin, sliced using a glass blade, then cross-sectionally observed under a polarizing microscope, and the surface peeling property was evaluated based on the following criteria.
- polyester A Dimethyl terephthalic acid, 2-6 dimethyl naphthalenedicarboxylic acid, dimethyl isophthalic acid, ethylene glycol as raw materials, transesterification catalyst for tetrabutyl titanate, polymerization catalyst for germanium dioxide, stabilizer for phosphorous acid And copolymerized polyethylene terephthalate was produced by an ordinary method.
- the composition of each component is as shown in Table 1.
- polyester B using dimethyl terephthalic acid, dimethyl isophthalic acid, and tetramethylene glycol as raw materials, similarly using tetrabutyl titanate as an ester exchange catalyst, diacid germanium as a polymerization catalyst, and phosphorous acid as a stabilizer; By the method, copolymerized polybutylene terephthalate was produced.
- the composition of each component is as shown in Table 1. .
- Polyester C Using dimethyl terephthalic acid, dimethyl isophthalic acid, and ethylene glycol as raw materials, also using tetrabutyl titanate as a transesterification catalyst, germanium dioxide as a polymerization catalyst, and phosphorous acid as a stabilizer, using a common method. Polymerized polyethylene terephthalate was produced. The composition of each component is as shown in Table 1.
- TA is terephthalic acid
- NDC 2,6-naphthalenedicarboxylic acid
- IA is isophthalic acid
- EG is ethylene glycol
- T is MG stands for tetramethylene glycol
- C HDM stands for cyclohexanedimethanol.
- polyester A and polyester B were blended at the ratios shown in the table to prepare a surface layer polymer.
- Polyester C was used as the core layer polymer.
- the polymer for the surface layer and the polyester C for the core layer were each dried at 150 ° C for 6 hours, and then supplied to two extruder hoppers for the surface layer and the core layer to obtain a melting temperature of 280 to 300.
- the mixture was melted at ° C, extruded on a cooling drum having a surface temperature of 20 ° C using a multi-manifold die, and rapidly cooled to obtain a multilayer unstretched film having a thickness of 180 m.
- the multilayer unstretched film obtained in this manner was stretched only in the direction (transverse direction) perpendicular to the continuous film forming direction under the conditions shown in Table 2, and further heat-set. In this way, a multilayer polyester film having a three-layer structure in which both the surface layers had a thickness of 4 m and the core layer had a thickness of 42 m was obtained. Table 2 shows the properties of the film thus obtained.
- the films of Examples 1 to 11 were all useful as heat-shrinkable packaging materials.
- the films of Comparative Examples 1, 3, 4, 10, and 11 were poor in surface layer adhesion due to blending of raw materials having high crystallinity.
- the films of Comparative Examples 2, 7, and 9 have poor affinity between the surface layer and the core layer, and the films of Comparative Examples 8 and 14 have poor strength because the amorphousness of the core layer has increased. Met.
- the films of Comparative Examples 5, 6, 12, and 13 were too high in amorphousness of the surface layer raw material, and could not be evaluated because they were blocked during drying after stretching treatment and film formation was difficult.
- the multilayer polyester film of the present invention has excellent durability, dimensional stability, mechanical strength, oil resistance, and solvent resistance, and also has excellent printability, and thus is useful as a shrinkable packaging material.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004530553A JP3892870B2 (ja) | 2002-08-23 | 2003-08-13 | 包装用熱収縮多層ポリエステルフィルム |
AU2003255023A AU2003255023A1 (en) | 2002-08-23 | 2003-08-13 | Heat-shrinkable multilayered polyester film for packaging |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-243183 | 2002-08-23 | ||
JP2002243183 | 2002-08-23 | ||
JP2002246491 | 2002-08-27 | ||
JP2002-246491 | 2002-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004018205A1 true WO2004018205A1 (ja) | 2004-03-04 |
Family
ID=31949571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/010290 WO2004018205A1 (ja) | 2002-08-23 | 2003-08-13 | 包装用熱収縮多層ポリエステルフィルム |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP3892870B2 (ja) |
AU (1) | AU2003255023A1 (ja) |
TW (1) | TWI270560B (ja) |
WO (1) | WO2004018205A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005338304A (ja) * | 2004-05-25 | 2005-12-08 | Toyobo Co Ltd | 熱収縮性ラベル |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1158648A (ja) * | 1997-08-11 | 1999-03-02 | Mitsubishi Rayon Co Ltd | 熱収縮性ポリエステルフィルム |
JP2000190440A (ja) * | 1998-12-28 | 2000-07-11 | Mitsubishi Rayon Co Ltd | 多層熱収縮性ポリエステルフィルム |
JP2001071442A (ja) * | 1999-09-06 | 2001-03-21 | Gunze Ltd | ポリエステル多層収縮フィルム及びその使用 |
JP2002052672A (ja) * | 2000-08-10 | 2002-02-19 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリエステル系多層フイルム |
EP1184167A2 (en) * | 2000-08-31 | 2002-03-06 | Toyo Boseki Kabushiki Kaisha | Layered heat-shrinkable films and labels for bottles |
-
2003
- 2003-08-13 JP JP2004530553A patent/JP3892870B2/ja not_active Expired - Fee Related
- 2003-08-13 AU AU2003255023A patent/AU2003255023A1/en not_active Abandoned
- 2003-08-13 WO PCT/JP2003/010290 patent/WO2004018205A1/ja active Application Filing
- 2003-08-18 TW TW92122654A patent/TWI270560B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1158648A (ja) * | 1997-08-11 | 1999-03-02 | Mitsubishi Rayon Co Ltd | 熱収縮性ポリエステルフィルム |
JP2000190440A (ja) * | 1998-12-28 | 2000-07-11 | Mitsubishi Rayon Co Ltd | 多層熱収縮性ポリエステルフィルム |
JP2001071442A (ja) * | 1999-09-06 | 2001-03-21 | Gunze Ltd | ポリエステル多層収縮フィルム及びその使用 |
JP2002052672A (ja) * | 2000-08-10 | 2002-02-19 | Mitsubishi Plastics Ind Ltd | 熱収縮性ポリエステル系多層フイルム |
EP1184167A2 (en) * | 2000-08-31 | 2002-03-06 | Toyo Boseki Kabushiki Kaisha | Layered heat-shrinkable films and labels for bottles |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005338304A (ja) * | 2004-05-25 | 2005-12-08 | Toyobo Co Ltd | 熱収縮性ラベル |
JP4580687B2 (ja) * | 2004-05-25 | 2010-11-17 | 東洋紡績株式会社 | 熱収縮性ラベル |
Also Published As
Publication number | Publication date |
---|---|
TW200407366A (en) | 2004-05-16 |
TWI270560B (en) | 2007-01-11 |
AU2003255023A1 (en) | 2004-03-11 |
JP3892870B2 (ja) | 2007-03-14 |
JPWO2004018205A1 (ja) | 2005-12-08 |
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