WO2004011252A1 - 積層包装材料及び包装袋 - Google Patents
積層包装材料及び包装袋 Download PDFInfo
- Publication number
- WO2004011252A1 WO2004011252A1 PCT/JP2003/009456 JP0309456W WO2004011252A1 WO 2004011252 A1 WO2004011252 A1 WO 2004011252A1 JP 0309456 W JP0309456 W JP 0309456W WO 2004011252 A1 WO2004011252 A1 WO 2004011252A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- film
- density
- laminated
- density polyethylene
- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
Definitions
- the present invention relates to a packaging bag that can be formed and sealed by heat sealing, and a heat-sealing-capable laminated packaging material used for the bag.
- the density of the low-temperature sealing, sealing strength, and bending resistance is excellent as the sealant layer of the laminated packaging material used. . 9 25 g / m 3 or less linear low-density polyethylene resin is widely used. However, when the linear low-density polyethylene resin was used as the sealant layer, physical properties such as piercing strength, slipperiness, and abrasion resistance were poor.
- a sealant layer in which various slip agents are added to a linear low-density polyethylene resin is used.
- the slipping agent tends to precipitate on the surface of the sealant layer with the passage of time, and has a problem that, for example, it adversely affects contents such as pharmaceuticals.
- the first object of the present invention is to provide piercing strength, slipperiness, wear resistance, It is intended to provide a laminated packaging material having excellent bending resistance and pinhole resistance.
- a second object of the present invention is to provide a packaging bag excellent in piercing strength, slipperiness, abrasion resistance, bending resistance, and pinhole resistance.
- the laminated packaging material of the present invention comprises: a base material comprising a single-layer film or a multilayer film;
- a laminated packaging material provided on the adhesive layer and comprising a two-layer laminated sealant layer,
- the double-layered sealant layer is provided on the adhesive layer, and has a linear low-density of 0.79 g / cm 3 to 0.925 g / cm 3. Po re ethylene les down resin layer, and said linear low density provided Po Li ethylene Ren resin layer ⁇ . 9 2 5 g / c m3 good Ri rather large, 0. 9 4 O g Z cm 3 or less
- the linear low-density polyethylene resin layer having a density of a, wherein the thickness of the linear low-density polyethylene resin layer is a, and the linear medium-density polyethylene resin layer is When the thickness of the layer is b, the thickness ratio a / b is 3 to 5, and b is 5 to 20 ⁇ .
- the packaging bag of the present invention comprises a base material made of a single-layer film or a multi-layer film, an adhesive layer provided on one surface of the base material, and a two-layer laminated seal provided on the adhesive layer.
- the double-layered sealant layer is provided on the adhesive layer.
- the linear low-density polyethylene resin layer is larger than 0.925 g Z cm 3 and has a density of 0.940 g / cm 3 or less. Assuming that the thickness of the polyethylene resin layer is a and the thickness of the linear medium-density polyethylene resin layer is b, the thickness ratio a Zb is 3 to 5, and b is characterized by being 5 to 20 ⁇ um.
- FIG. 1 is a side sectional view showing an example of the laminated packaging material of the present invention.
- FIG. 2 is a front view illustrating an example of the packaging bag according to the present invention.
- FIG. 3 is a front view illustrating an example of a state in which the packaging bag according to the present invention is sealed.
- the laminated packaging material of the present invention basically has a configuration in which an adhesive layer and a double-layered sealant layer are laminated on a base material.
- the substrate comprises a single-layer film or a multi-layer film.
- the adhesive layer is provided for bonding the base material and the two-layer laminated sealant layer.
- the two-layer laminated sealant layer is composed of a linear low-density polyethylene resin layer and a linear medium-density polyethylene resin layer.
- the linear low-density polyethylene resin layer used in the present invention is a linear polyethylene having a density of 0.89 to 0.925 g Z cm 3. Ethylene resin layer.
- the linear medium-density polyethylene resin layer used in the present invention has a density greater than 0.925 g / cm3 and a density of 0.940 g / cm3 or less. Refers to a linear polyethylene resin layer.
- the thickness of the linear low-density polyethylene resin layer is a and the thickness of the linear medium-density polyethylene resin layer is b
- the ratio a / b is between 3 and 5, and b is between 5 and 20 ⁇ m.
- the packaging bag of the present invention is formed by heat-sealing the laminated packaging material with the two-layered sealant layer inside.
- the sealant layer of the laminated packaging material is formed of a linear low-density polyethylene resin layer having a predetermined density and thickness and a linear medium-density polyolefin having a predetermined density and thickness.
- the density of the linear polyethylene resin layer provided on the adhesive layer is less than 0.89 g / cm3, the slip property during film formation is poor and the amount of slip agent is small.
- there are problems such as difficulty in winding up and elution of low molecular weight components, and the density of 0.925 g Z cm3 on the adhesive layer.
- Over The use of a linear polyethylene resin layer having a medium density or higher density has the disadvantage that the rigidity of the laminated packaging material becomes stronger overall and its bending resistance is reduced. There is.
- the thickness of the linear medium-density polyethylene is less than 5 ⁇ , there is a disadvantage that stable production on the film becomes difficult, and if it exceeds 20 111, The disadvantage is that the laminated packaging material becomes too stiff.
- the thickness a of the linear low-density polyethylene resin layer is preferably 15 to 100 m, and if it is less than 15 ⁇ , the film-forming stability is poor. When the thickness exceeds 100 ⁇ , the total thickness of the sealant exceeds 12 ⁇ / m, and it tends to be unsuitable as a packaging material. .
- the difference between the density of the linear low-density polyethylene resin layer and the density of the linear medium-density polyethylene resin layer is preferably 0.02. If it is 0.03 g Z cm3, and if it is less than 0.02 g / cm3, the effect of laminating two layers of sealants having different densities, that is, the low-temperature sealing property and the sealing strength is impaired. Without this, the effect of improving the piercing strength, slipperiness, abrasion resistance, bending resistance, and pinhole resistance tends to be lost.
- a slipping agent can be added to the linear low-density polyethylene resin layer for the purpose of improving slipperiness and abrasion resistance.
- the amount of addition is preferably as small as possible so that the adhesion, migration, or elution of the slip agent to the contents is suppressed as much as possible.
- the slipping agent include fatty acid amide (5302 M, manufactured by Ube Industries, Ltd.).
- the amount of the slipping agent is, for example, in linear low-density polyethylene resin. It is about 250 Ppm.
- AFFINITI POP manufactured by Dow Chemical Japan
- Evoluyu manufactured by Mitsui Chemicals and Umelite manufactured by Ube Industries, etc.
- the single-layer film used for the base material layer for example, a biaxially stretched polypropylene film having a thickness of preferably 20 to 30 / zm, preferably 15 A biaxially stretched nylon film having a thickness of 225 m, preferably a biaxially stretched polyester film having a thickness of 6 to 12 ⁇ .
- a metal having a thickness of 6 to 9 ⁇ m for example, aluminum foil, or a gas barrier property with the single-layer film.
- a laminated film with a film can be used.
- Film with gas barrier properties for example, an aluminum vapor-deposited film having a thickness of preferably 6 to 30 ⁇ m, or a silicon oxide or aluminum oxide having a thickness of preferably 6 to 12 ⁇
- FIG. 1 is a side sectional view showing an example of the laminated packaging material of the present invention.
- This laminated packaging material 6 is composed of an adhesive layer 2 provided on one surface of a base layer 1 composed of a single-layer film or a laminated film, and a two-layer structure provided on the adhesive layer 2. It has 5 sealant layers.
- the sealant layer 5 has a linear low-density polyethylene resin layer 3 having a density of 0.89 to 0.925 g Zcm 3 on the side of the adhesive layer 2, the side in contact with the contents.
- a linear medium-density polyethylene resin layer 4 having a density larger than 0.925 gZcm3 and not more than 0.940 gZcm3 is provided.
- the sealant layer 5 can be laminated by, for example, a known co-extrusion laminating method.
- the adhesive layer 2 for example, a two-component curing type polyurethane adhesive can be used.
- the adhesive layer 2 can be formed by, for example, a known Daravia method.
- the coating amount can be set to, for example, 1 to 5 g Zm 2 in a dry state.
- the laminated packaging material can be further provided with, for example, a printed layer (not shown) if necessary.
- FIG. 2 is a front view illustrating an example of the packaging bag according to the present invention.
- FIG. 3 is a diagram showing a state in which the packaging bag shown in FIG. 2 is sealed.
- Figure 2 shows the shape of the packaging bag before containing the contents
- Figure 3 shows the shape of the packaging bag after containing and sealing the contents.
- this packaging bag 10 is composed of, for example, two rectangular laminated packaging materials 6 stacked with the sealant layer on the inner side, as shown in the figure. It is formed by heat-sealing the three end regions 7 in a relatively low temperature region of, for example, 120 ° C. or 160 ° C. At this time, the end 8 including the remaining side is open.
- the area including the end 8 is similarly heat-sealed, whereby the packaging bag 10 can be sealed.
- the shape of the packaging bag of the present invention can be appropriately modified as needed.
- Examples of such a shape include a three-sided bag, a gusset bag, a self-standing bag, and a pillow bag.
- Biaxially stretched polypropylene film (thickness: 30 im) OPP film).
- a dry laminating machine Apply a polyurethane-based adhesive to one side of this OPP film in a dry state at a coating amount of 5 g / m2 , and then apply a thickness A substrate was obtained by laminating a 12 ⁇ m biaxially stretched polyvinyl alcohol film (hereinafter referred to as a PVA film).
- a polyurethane-based adhesive was applied in a dry amount at a coating amount of 3 g / m 2 to obtain an adhesive layer.
- a linear low-density polyethylene resin layer with a density of 0.915 g // cm3 was formed on the obtained adhesive layer as a sealant layer.
- the laminated packaging material of the present invention was obtained by laminating and forming a two-layer laminated sealant layer.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging material were good.
- Trial of laminated packaging material cut to a size of 205 x 290 mm Prepare a test specimen and repeat it 100,000 times at a temperature of 25 ° C using a gelbo flex tester (with a torsion angle of 44 °, manufactured by Rigaku Corporation, according to ASTMF-3392). After repeating the exercise, the appearance of pinholes was visually inspected to determine the number of pinholes in the test specimen.
- the three sides were heat-sealed with the sealant layer inside, and a three-sided bag having the same dimensions as in FIG. 2 having an inner dimension of 27 Omm x 30.0 mm was created.
- the obtained bag 900 mL of an infusion solution were filled and sealed, and 10 infusion bags were accommodated, and the opening was heat-sealed to obtain a test packaging bag.
- the 50 infusion bags were further sealed in cardboard, and the sealed one was attached to a vibration tester compliant with JIS-Z-0 232, with a peak acceleration of ⁇ 4 G and a vertical direction of 15 The vibration was applied for 15 minutes, horizontal direction for 15 minutes and vertical direction for 30 minutes.
- the infusion bag was taken out, the appearance of pinholes in the used bags was visually inspected, and the number of pinholes generated per 10 test packaging bags was examined.
- a vibration tester conforming to JIS-Z_0232 is a tester having a configuration including a diaphragm and a vibration device.
- a linear low-density polyethylene resin with a density of 0.915 g / cm3 was extruded at a thickness of 90 / m as a sealant layer.
- a laminated packaging material was obtained in the same manner as in Example 1 except that a single resin layer was used.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging material were examined in the same manner as in Example 1, and the bending strength test and the vibration test were performed.
- the obtained laminated packaging material was inferior in slipperiness, abrasion resistance, and piercing strength.
- sealant layer a single-layer resin layer extruded with a thickness of 90 ⁇ from a linear medium-density polyethylene resin having a density of 0.935 g Z cm 3 is used. Except for this, a laminated packaging material was obtained in the same manner as in Example 1.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging material were examined in the same manner as in Example 1, and the bending strength test and the vibration test were performed.
- the obtained laminated packaging material had no problem in piercing strength, slipperiness, and abrasion resistance, as a result of the above test, it was inferior in bending resistance.
- Ethylene resin layer with thickness 30 A laminated packaging material was obtained in the same manner as in Example 1, except that the resin layers were co-extruded and laminated to form a two-layer laminated resin layer.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging material were examined in the same manner as in Example 1, and the bending strength test and the vibration test were performed.
- the obtained laminated packaging material had no problem in piercing strength, slipperiness, and abrasion resistance, as a result of the above test, it was inferior in bending resistance.
- a single-layer resin layer extruded from a linear low-density polyethylene resin with a density of 0.925 g Z cm3 to a thickness of 90 ⁇ is used as the sealant layer. Except for this, the laminated packaging material was obtained in the same manner as in Example 1.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging material were examined in the same manner as in Example 1, and the bending strength test and the vibration test were performed.
- the obtained laminated packaging material had poor piercing strength and slipperiness.
- Polyethylene extruded from 15 m biaxially stretched nylon film A base material was obtained by a so-called sand tsutira mining method in which the resin material was overlaid and stuck on a ren resin.
- a polyurethane-based adhesive was applied in an amount of 3 gm 2 in a dry state to obtain an adhesive layer.
- a co-extrusion laminating machine is used as a sealant layer on the obtained adhesive layer, and a linear low-density polymer having a density of 0.1 SOA g Z cms is formed on the adhesive layer.
- the piercing strength, slipperiness, and abrasion resistance of the obtained laminated packaging materials were all good.
- the piercing strength, slipperiness, and abrasion resistance were good.
- this laminated packaging material can provide a packaging bag in which the preservability of the contents is excellent over a long period of time.
- the obtained laminated packaging material was subjected to the same (1) bending strength test and (2) vibration test as described above.
- the sealant layer of the laminated packaging material is a linear low-density polyethylene resin layer having a density of 0.89 to 0.925 g Zcm 3 on the adhesive layer side. Density is greater than 0.925 g / cm 3 on the side in contact with the object, and linear with 0.940 g / cm 3 or less It has a two-layer structure consisting of a medium-density polyethylene resin layer, and has a thickness a of a linear low-density polyethylene resin layer and a thickness b of a linear medium-density polyethylene resin layer. The ratio of a / b is 3 to 5 and b is 5 to 20 ⁇ m, so that various physical properties such as piercing strength, sliding property, abrasion resistance, bending resistance, pinhole resistance, etc. ing. Industrial applicability
- the laminated packaging material of the present invention can be easily formed and sealed by heat sealing, and can be used as a packaging bag for accommodating various contents.
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Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004524151A JPWO2004011252A1 (ja) | 2002-07-25 | 2003-07-25 | 積層包装材料及び包装袋 |
AU2003248113A AU2003248113A1 (en) | 2002-07-25 | 2003-07-25 | Laminated packaging material and packaging bag |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002216395 | 2002-07-25 | ||
JP2002-216395 | 2002-07-25 |
Publications (1)
Publication Number | Publication Date |
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WO2004011252A1 true WO2004011252A1 (ja) | 2004-02-05 |
Family
ID=31184576
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/009456 WO2004011252A1 (ja) | 2002-07-25 | 2003-07-25 | 積層包装材料及び包装袋 |
Country Status (3)
Country | Link |
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JP (1) | JPWO2004011252A1 (ja) |
AU (1) | AU2003248113A1 (ja) |
WO (1) | WO2004011252A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006007509A (ja) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | ピンホールの発生を抑制した積層材料および積層包装袋 |
JP2006007508A (ja) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | 酸素バリア性を有するピンホールの発生を低減した積層包装材料および積層包装袋 |
JP2006116709A (ja) * | 2004-10-19 | 2006-05-11 | Toppan Printing Co Ltd | 耐ピンホール性を有する共押し出しフィルム及びそれを用いたバリア性積層の外装袋 |
WO2006051802A1 (ja) * | 2004-11-10 | 2006-05-18 | Showa Denko Packaging Co. | 包装用積層体及びこれを用いた包装用袋体と電子材料製品包装用袋体 |
CN107020781A (zh) * | 2015-12-01 | 2017-08-08 | 凸版印刷株式会社 | 层叠树脂薄膜 |
WO2020034959A1 (zh) * | 2018-08-14 | 2020-02-20 | 田雨生 | 一种耐磨塑料包装袋及其加工工艺 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06171039A (ja) * | 1992-12-04 | 1994-06-21 | Otsuka Pharmaceut Factory Inc | 多層フィルム及び容器 |
JPH06270356A (ja) * | 1993-03-23 | 1994-09-27 | Otsuka Pharmaceut Factory Inc | 多層フィルム及び容器 |
JPH08309939A (ja) * | 1995-05-15 | 1996-11-26 | Nippon Petrochem Co Ltd | 積層体と積層体からなる容器 |
JP2000108254A (ja) * | 1998-10-01 | 2000-04-18 | Toppan Printing Co Ltd | 腰強度と耐衝撃性に優れた樹脂積層フィルム |
JP2000135759A (ja) * | 1998-10-30 | 2000-05-16 | Toppan Printing Co Ltd | 腰強度と耐衝撃性に優れたフィルムおよびそれを用いた包装体 |
JP2000313093A (ja) * | 1999-04-30 | 2000-11-14 | Toppan Printing Co Ltd | スタンディングパウチ用積層フィルム |
-
2003
- 2003-07-25 JP JP2004524151A patent/JPWO2004011252A1/ja active Pending
- 2003-07-25 AU AU2003248113A patent/AU2003248113A1/en not_active Abandoned
- 2003-07-25 WO PCT/JP2003/009456 patent/WO2004011252A1/ja active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06171039A (ja) * | 1992-12-04 | 1994-06-21 | Otsuka Pharmaceut Factory Inc | 多層フィルム及び容器 |
JPH06270356A (ja) * | 1993-03-23 | 1994-09-27 | Otsuka Pharmaceut Factory Inc | 多層フィルム及び容器 |
JPH08309939A (ja) * | 1995-05-15 | 1996-11-26 | Nippon Petrochem Co Ltd | 積層体と積層体からなる容器 |
JP2000108254A (ja) * | 1998-10-01 | 2000-04-18 | Toppan Printing Co Ltd | 腰強度と耐衝撃性に優れた樹脂積層フィルム |
JP2000135759A (ja) * | 1998-10-30 | 2000-05-16 | Toppan Printing Co Ltd | 腰強度と耐衝撃性に優れたフィルムおよびそれを用いた包装体 |
JP2000313093A (ja) * | 1999-04-30 | 2000-11-14 | Toppan Printing Co Ltd | スタンディングパウチ用積層フィルム |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006007509A (ja) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | ピンホールの発生を抑制した積層材料および積層包装袋 |
JP2006007508A (ja) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | 酸素バリア性を有するピンホールの発生を低減した積層包装材料および積層包装袋 |
JP2006116709A (ja) * | 2004-10-19 | 2006-05-11 | Toppan Printing Co Ltd | 耐ピンホール性を有する共押し出しフィルム及びそれを用いたバリア性積層の外装袋 |
JP4492290B2 (ja) * | 2004-10-19 | 2010-06-30 | 凸版印刷株式会社 | 耐ピンホール性を有する共押し出しフィルム及びそれを用いたバリア性積層の外装袋 |
WO2006051802A1 (ja) * | 2004-11-10 | 2006-05-18 | Showa Denko Packaging Co. | 包装用積層体及びこれを用いた包装用袋体と電子材料製品包装用袋体 |
JP2006137010A (ja) * | 2004-11-10 | 2006-06-01 | Showa Denko Packaging Co Ltd | 包装用積層体及びこれを用いた包装用袋体と電子材料製品包装用袋体 |
CN107020781A (zh) * | 2015-12-01 | 2017-08-08 | 凸版印刷株式会社 | 层叠树脂薄膜 |
EP3385190A4 (en) * | 2015-12-01 | 2018-11-07 | Toppan Printing Co., Ltd. | Laminated resin film |
US11254113B2 (en) | 2015-12-01 | 2022-02-22 | Toppan Printing Co., Ltd. | Laminated resin film |
WO2020034959A1 (zh) * | 2018-08-14 | 2020-02-20 | 田雨生 | 一种耐磨塑料包装袋及其加工工艺 |
Also Published As
Publication number | Publication date |
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JPWO2004011252A1 (ja) | 2005-11-24 |
AU2003248113A1 (en) | 2004-02-16 |
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