CN101734404A - Composite packaging bag with high barrier property - Google Patents
Composite packaging bag with high barrier property Download PDFInfo
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- CN101734404A CN101734404A CN200810180084A CN200810180084A CN101734404A CN 101734404 A CN101734404 A CN 101734404A CN 200810180084 A CN200810180084 A CN 200810180084A CN 200810180084 A CN200810180084 A CN 200810180084A CN 101734404 A CN101734404 A CN 101734404A
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Abstract
The invention discloses a composite packaging bag with high barrier property, comprising a PET layer, an ink layer, an AC agent layer and a multi-layer coextrusion MPE layer on the bottom layer. The composite packaging bag is characterized in that a first PE layer, a coextrusion PVC layer and a second PE layer are successively arranged between the AC agent layer and the coextrusion MPE layer. The composite packaging bag has favorable barrier property, the comprehensive barrier property is higher than NY, PET, common PVC and aluminum foil of which the thickness is lower than 7 mu m; the composite packaging bag can once form film on an extruding machine with double die heads, thus reducing working procedures, and lowering energy consumption; an inner-layer material coextrusion MPE layer has the characteristics of pollution prevention, wide heat sealing temperature range and low unsealing temperature.
Description
Technical field:
The present invention relates to a kind of food pack or film volume, specifically relate to a kind of composite packaging bag with high barrier property.
Background technology:
Plastic package material and technology are as follows in the industry at present: after complex film class: BOPP or the PET printing, and compound VMPET or AL or PET or NY, the multi-layer co-extruded polyethylene film of compound again one deck; PVC film: generally be used for preservative film, casing film, individual layer food bag.And general flexible packaging intermediate barrier layer material uses VMPET, PET, AL, NY, material is unbalanced to the barrier property of oxygen, aqueous vapor, guarantor's perfume (or spice), and for example the NY fragrance protectiveness is good, but the barrier of aqueous vapor is not as PET, if but adopted two kinds of barrier materials, cost would be increased greatly.
Summary of the invention:
Technical matters to be solved by this invention is exactly to provide a kind of can satisfy the requirement of packing high barrier at above deficiency; do not increase the composite packaging bag with high barrier property of cost again, this composite packaging bag with high barrier property barrier property is good, the heat-sealing temperature wide ranges, be beneficial to large-scale production.
The technical solution used in the present invention is:
A kind of composite packaging bag with high barrier property includes the multi-layer co-extruded MPE layer of pet layer, ink lay, AC agent layer and bottom, also is provided with a LDPE layer, co-extrusion PVC layer and the 2nd LDPE layer between AC agent layer and the co-extrusion MPE layer successively.PVC is the best a kind of packing timber section of materials with high barrier property in the plastic wrapping in the world today, it both had been different from polyvinyl alcohol increases along with moisture absorption and gas barrier property is sharply descended, also be different from nylon membrane because hygroscopic character makes the moisture barrier property variation, but a kind ofly hinder the high obstructing performance material section wet, that choke is all excellent, be the unique plastics that simultaneously oxygen and steam had high barrier, its impayable preceence is more being arranged aspect the smell obstruct; PVC also is simultaneously the strong and good perfect package material of low-temperature heat-sealing, heat-shrinkable and chemical inertness of a kind of barrier height, toughness, take the course of its own at packaging industry, particularly it has that resistance is wet, resistance oxygen, protection against the tide, acid and alkali-resistance, oil resistant soaks and performance such as the solvent of anti-the number of chemical, is widely used in the packing of food, medicine, military products over 50 years.
And the PVC film that coextrusion processes is produced, its resistance is wet, resistance oxygen, fragrance protectiveness can be far above common PVC film, and the barrier index is higher than common PVC more than 25 times.
Co-extrusion PVC layer is a 2-8 layer individual layer PVC film co-extrusion.
Co-extrusion PVC layer is 5 layers or 7 layers of individual layer PVC film co-extrusion.
The beneficial effect that the present invention can reach is:
1, barrier property of the present invention is good, and comprehensive barrier is higher than the aluminium foil that NY, PET, common PVC and thickness are lower than 7um.
But 2, the present invention can be on bimodulus head extruder one-pass film-forming, reduced operation, reduced energy consumption; And adopt ordinary production technology, be beneficial to Quantity production.
3, inner layer material co-extrusion MPE layer antipollution of the present invention, the heat-sealing temperature wide ranges, it is low to play the envelope temperature.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
The specific embodiment:
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, this composite packaging bag with high barrier property includes the multi-layer co-extruded MPE layer 4 of pet layer 1, ink lay 17, AC agent layer 13 and bottom, also is provided with a LDPE layer 2, co-extrusion PVC layer 5 and the 2nd LDPE layer 3 between AC agent layer 13 and the co-extrusion MPE layer 4 successively.Wherein co-extrusion PVC layer 3 is two to eight layers of individual layer PVC film co-extrusion, is good with five layers or seven layers of individual layer PVC film co-extrusion especially.
During making, pet layer 1 is behind printing one deck ink lay 7 on the colourgravure machine, unreel at first by cable roll coating AC agent layer 6 after oven drying at bimodulus head casting machine first, the first die head curtain coating the one LDPE layer 2 on bimodulus head casting machine, second unreels multi-layer co-extruded PVC film, the second die head curtain coating the 2nd LDPE layer 3, the three unreels multi-layer co-extruded MPE film; Or on single casting machine curtain coating composite membrane-forming at twice.Through after operation cut or bag forms film for packaging volume or sack.
Plastic package material and technology are as follows in the industry at present: after complex film class: BOPP or the PET printing, and compound VMPET or AL or PET or NY, the multi-layer co-extruded polyethylene film of compound again one deck; PVC film: generally be used for preservative film, casing film, individual layer food bag.And general flexible packaging intermediate barrier layer material uses VMPET, PET, AL, NY, material is unbalanced to the barrier property of oxygen, aqueous vapor, guarantor's perfume (or spice), and for example the NY fragrance protectiveness is good, but the barrier of aqueous vapor is not as PET, if but adopted two kinds of barrier materials, cost would be increased greatly.
And composite packaging bag with high barrier property of the present invention: barrier property is good, and comprehensive barrier is higher than the aluminium foil that NY, PET, common PVC and thickness are lower than 7um; But can be on bimodulus head extruder one-pass film-forming, reduced operation, reduced energy consumption; And adopt ordinary production technology, be beneficial to Quantity production; Its inner layer material co-extrusion MPE layer antipollution, the heat-sealing temperature wide ranges, it is low to play the envelope temperature.As seen, composite packaging bag with high barrier property of the present invention can fully satisfy the demand on the market.
Claims (3)
1. composite packaging bag with high barrier property includes the multi-layer co-extruded MPE layer of pet layer, ink lay, AC agent layer and bottom, it is characterized in that: also be provided with a PE layer, co-extrusion PVC layer and the 2nd PE layer between AC agent layer and the co-extrusion MPE layer successively.
2. composite packaging bag with high barrier property as claimed in claim 1 is characterized in that: co-extrusion PVC layer is 2～8 layers of individual layer PVC film co-extrusion.
3. composite packaging bag with high barrier property as claimed in claim 1 is characterized in that: co-extrusion PVC layer is 5 layers or 7 layers of individual layer PVC film co-extrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810180084A CN101734404A (en) | 2008-11-24 | 2008-11-24 | Composite packaging bag with high barrier property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810180084A CN101734404A (en) | 2008-11-24 | 2008-11-24 | Composite packaging bag with high barrier property |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101734404A true CN101734404A (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810180084A Pending CN101734404A (en) | 2008-11-24 | 2008-11-24 | Composite packaging bag with high barrier property |
Country Status (1)
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| CN (1) | CN101734404A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794958A (en) * | 2011-05-24 | 2012-11-28 | 住友电木株式会社 | Laminated film and packaging body |
| CN103042787A (en) * | 2012-10-19 | 2013-04-17 | 大连富利达塑料制品有限公司 | Nine-layer coextruded high barrier package film |
| CN103192564A (en) * | 2013-04-15 | 2013-07-10 | 黄山永新股份有限公司 | Shredded composite packaging film in arbitrary direction and preparation method thereof |
| CN107000378A (en) * | 2014-10-02 | 2017-08-01 | 波比奥泰克股份公司 | Complete moistureproof multilayer material for the free water that can be absorbed, keep and do not discharge absorption of packaged food, diet and cosmetics, medicine equipment and medical product |
-
2008
- 2008-11-24 CN CN200810180084A patent/CN101734404A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102794958A (en) * | 2011-05-24 | 2012-11-28 | 住友电木株式会社 | Laminated film and packaging body |
| CN103042787A (en) * | 2012-10-19 | 2013-04-17 | 大连富利达塑料制品有限公司 | Nine-layer coextruded high barrier package film |
| CN103192564A (en) * | 2013-04-15 | 2013-07-10 | 黄山永新股份有限公司 | Shredded composite packaging film in arbitrary direction and preparation method thereof |
| CN103192564B (en) * | 2013-04-15 | 2015-07-08 | 黄山永新股份有限公司 | Shredded composite packaging film in arbitrary direction and preparation method thereof |
| CN107000378A (en) * | 2014-10-02 | 2017-08-01 | 波比奥泰克股份公司 | Complete moistureproof multilayer material for the free water that can be absorbed, keep and do not discharge absorption of packaged food, diet and cosmetics, medicine equipment and medical product |
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Application publication date: 20100616 |