CN204605086U - A kind of high-barrier heat-sealable polyester film - Google Patents
A kind of high-barrier heat-sealable polyester film Download PDFInfo
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- CN204605086U CN204605086U CN201520200923.1U CN201520200923U CN204605086U CN 204605086 U CN204605086 U CN 204605086U CN 201520200923 U CN201520200923 U CN 201520200923U CN 204605086 U CN204605086 U CN 204605086U
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Abstract
The utility model belongs to thin film technique field, particularly relate to a kind of high-barrier heat-sealable polyester film, described polyester film comprises surface heat sealing, the first barrier layer, sandwich layer, the second barrier layer and anti-sticking layer, described surface heat sealing and the first barrier layer successively coextru-lamination in the upper surface of described sandwich layer, described second barrier layer and anti-sticking layer successively coextru-lamination in the lower surface of described sandwich layer.A kind of high-barrier heat-sealable polyester film that the utility model provides, its preparation section is simple, both had obvious oxygen barrier, and had again good heat sealability, and its cost is low, is widely used at food packaging applications.
Description
Technical field
The utility model belongs to thin film technique field, particularly relates to a kind of high-barrier heat-sealable polyester film.
Background technology
Nylon film is a class high-strength tenacity plastic foil, its transparency is good, and there is good gloss, tensile strength, hot strength is higher, also there is good heat resistance, cold resistance, oil resistivity and organic solvent resistance, wearability, paracentesis resistance is excellent, and it is soft, oxygen barrier is excellent, because nylon film has excellent oil resistivity, non-toxic and fragrance protectiveness and the iris action to oxygen, it is suitable for packing rigid article, such as greasy food, meat products, fried food, vacuum-packed food, cooking food etc., the defect of nylon film is: it is poor to the barrier of steam, the moisture absorption, poisture-penetrability is larger, heat sealability is poor, and its price is higher, current price is more than 20000 yuan/ton.
Polyester film is a kind of macromolecule plastic film, is more and more subject to the favor of consumers in general because of its high comprehensive performance, and its low price (current polyester slice price is at 6800 yuan/ton), but its shortcoming is: oxygen barrier is not enough, poor toughness.
Along with the raising of people's environmental consciousness and the aggravation of blister-pack market competition, for reducing production cost on Vehicles Collected from Market, high-resistant diaphragm is made by the film products such as PE, BOPP, CPP and nylon membrane compound, carry out alternative pure nylon membrane, existing High barrier PET film mainly has the following disadvantages: one is that its preparation section is complicated, cost is high, and environment-friendly type is poor; Two is that common nylon film and polyester film all do not have a heat sealability, limits the expansion of application after both compounds.
Utility model content
Technical problem to be solved in the utility model is: the deficiency existed for prior art, there is provided that a kind of fragrance protectiveness is good, heat seal strength is moderate, operation is simple, is suitable for the high-barrier heat-sealable polyester film of the packaging for foodstuff that the high-barrier such as meat products, fried food, cooking food require.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of high-barrier heat-sealable polyester film, described polyester film comprises surface heat sealing, the first barrier layer, sandwich layer, the second barrier layer and anti-sticking layer, described surface heat sealing and the first barrier layer successively coextru-lamination in the upper surface of described sandwich layer, described second barrier layer and anti-sticking layer successively coextru-lamination in the lower surface of described sandwich layer.
Improve as one, described sandwich layer is glossy polyester PET slicing layer.
Improve as one, described surface heat sealing is amorphous copolyester slicing layer.
Improve as one, described first barrier layer and the second barrier layer are nylon chips layer.
Improve as one, described anti-sticking layer is by silica modified polyester slice layer.
As improving further, the thickness of described polyester film is 8 ~ 36 μm.
As improving further, the thickness of described surface heat sealing is 0.5 ~ 2 μm.
As improving further, the thickness of described first barrier layer and the second barrier layer is 1 ~ 3 μm.
Owing to have employed technique scheme, the beneficial effects of the utility model are:
A kind of high-barrier heat-sealable polyester film that the utility model provides, surface heat sealing, the first barrier layer, sandwich layer, the second barrier layer and anti-sticking layer, above each layer can be obtained by coextruding method, and its preparation section is simple.
Surface heat sealing is amorphous copolyester slicing layer, and it has good heat sealability in wider temperature range; Anti-sticking layer is by silica modified polyester slice layer, and it can improve rolling effect and the smoothness of polyester film, avoids polyester film adhesion between layers; First barrier layer and the second barrier layer are nylon chips layer, and it has fragrance protectiveness and the iris action to oxygen; It adopts nylon film and polyester film to be composited, and its cost is lower, is suitable for the packaging for foodstuff that the high-barrier such as meat products, fried food, cooking food require.
A kind of high-barrier heat-sealable polyester film that the utility model provides, its preparation section is simple, both had obvious oxygen barrier, and had again good heat sealability, and its cost is low, is widely used at food packaging applications.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of a kind of high-barrier heat-sealable polyester film that the utility model provides;
Wherein: 1-surface heat sealing, 2-first barrier layer, 3-sandwich layer, 4-second barrier layer, 5-anti-sticking layer.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the longitudinal sectional view of a kind of high-barrier heat-sealable polyester film that the utility model provides, and for convenience of explanation, this figure only provides the structure division relevant with the utility model.
A kind of high-barrier heat-sealable polyester film, comprise surface heat sealing 1, first barrier layer 2, sandwich layer 3, second barrier layer 4 and anti-sticking layer 5, sandwich layer 3 is glossy polyester PET slicing layer, surface heat sealing 1 is preferably amorphous copolyester slicing layer, first barrier layer 2 and the second barrier layer 4 are all preferably nylon chips layer, anti-sticking layer 5 is preferably by silica modified polyester slice layer, surface heat sealing 1 and the first barrier layer 2 successively coextru-lamination in the upper surface of sandwich layer 3, the second barrier layer 4 and anti-sticking layer 5 successively coextru-lamination in the lower surface of sandwich layer 3; Wherein the thickness of polyester film is 8 ~ 36 μm, and be preferably 14 ~ 15 μm, the thickness of surface heat sealing 1 is 0.5 ~ 2 μm, be preferably 1 ~ 1.5 μm, the thickness of the first barrier layer 2 and the second barrier layer 4 is 1 ~ 3 μm, and be preferably 2 μm, sandwich layer 3 thickness is preferably 10 μm.
Sandwich layer 3, first barrier layer 2, second barrier layer 4 in the present embodiment, surface heat sealing 1, anti-sticking layer 5 are all obtained by four layers of coextruding method, wherein main extruder carry out sandwich layer 3 material vacuumize melting, filter extrude, all the other two extruderses carry out vacuumizing melting, filtering and extrude of the first barrier layer 2, second barrier layer 4 and anti-sticking layer 5 respectively, and surface heat sealing 1 is used alone an extruder to carry out vacuumizing melting, filtering and extrude; Above-mentioned melt obtains shaping high-barrier heat-sealable polyester film through adapter, die head after forming slab, longitudinal stretching, cross directional stretch and traction rolling all again.
Amorphous copolyester section in above-described embodiment, bright PET chips can adopt domestic Yizheng FG610, FG600 two kinds of trades mark respectively; Amorphous copolyester is cut into slices this series products that Yao Rong nanmu can be adopted to produce, and is all commercially available; Nylon chips can use Yueyang Ba Ling petrochemical industry chemical fibre Co., Ltd trade mark YH3400 film level nylon chips.
The contrast of the main physical property technical indicator of the high-barrier heat-sealable polyester film that the utility model provides and conventional polyester film, common nylon film is as shown in the table:
MD in upper table refers to longitudinal stretching, and TD refers to cross directional stretch.
As can be seen from the above table, the high-barrier heat-sealable polyester film that the utility model provides is compared with common nylon film with conventional polyester film, when same thickness, its hot strength, percent thermal shrinkage, wetting tension and conventional polyester film are suitable with general thin; Its elongation at break is lower than conventional polyester film and general thin; Its degree of friction is suitable with common nylon film, higher than conventional polyester film; Its mist degree between conventional polyester film and common nylon film between the two, illustrates that the glossiness of this high-barrier heat-sealable polyester film and transparency are better than conventional polyester film, but is slightly inferior to common nylon film; Its oxygen transit dose is starkly lower than conventional polyester film and common nylon film, and namely the oxygen barrier of this high-barrier heat-sealable polyester film is stronger; And its heat seal strength is apparently higher than conventional polyester film and common nylon film, namely the heat sealability of this high-barrier heat-sealable polyester film is good.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (8)
1. a high-barrier heat-sealable polyester film, it is characterized in that: described polyester film comprises surface heat sealing, the first barrier layer, sandwich layer, the second barrier layer and anti-sticking layer, described surface heat sealing and the first barrier layer successively coextru-lamination in the upper surface of described sandwich layer, described second barrier layer and anti-sticking layer successively coextru-lamination in the lower surface of described sandwich layer.
2. a kind of high-barrier heat-sealable polyester film as claimed in claim 1, is characterized in that: described sandwich layer is glossy polyester PET slicing layer.
3. a kind of high-barrier heat-sealable polyester film as claimed in claim 1, is characterized in that: described surface heat sealing is amorphous copolyester slicing layer.
4. a kind of high-barrier heat-sealable polyester film as claimed in claim 1, is characterized in that: described first barrier layer and the second barrier layer are nylon chips layer.
5. a kind of high-barrier heat-sealable polyester film as claimed in claim 1, is characterized in that: described anti-sticking layer is by silica modified polyester slice layer.
6. a kind of high-barrier heat-sealable polyester film as described in any one of claim 1-5, is characterized in that: the thickness of described polyester film is 8 ~ 36 μm.
7. a kind of high-barrier heat-sealable polyester film as described in any one of claim 1-5, is characterized in that: the thickness of described surface heat sealing is 0.5 ~ 2 μm.
8. a kind of high-barrier heat-sealable polyester film as described in any one of claim 1-5, is characterized in that: the thickness of described first barrier layer and the second barrier layer is 1 ~ 3 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200923.1U CN204605086U (en) | 2015-04-03 | 2015-04-03 | A kind of high-barrier heat-sealable polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520200923.1U CN204605086U (en) | 2015-04-03 | 2015-04-03 | A kind of high-barrier heat-sealable polyester film |
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| Publication Number | Publication Date |
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| CN204605086U true CN204605086U (en) | 2015-09-02 |
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| CN201520200923.1U Expired - Fee Related CN204605086U (en) | 2015-04-03 | 2015-04-03 | A kind of high-barrier heat-sealable polyester film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903954A (en) * | 2016-04-08 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of steam oxygen blocking barrier film and preparation method thereof |
-
2015
- 2015-04-03 CN CN201520200923.1U patent/CN204605086U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106903954A (en) * | 2016-04-08 | 2017-06-30 | 宁波长阳科技股份有限公司 | A kind of steam oxygen blocking barrier film and preparation method thereof |
| CN106903954B (en) * | 2016-04-08 | 2019-08-20 | 宁波长阳科技股份有限公司 | A kind of steam oxygen blocking diaphragm and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190128 Address after: 262724 West of Xinhua West Road, Hou Town Project Area, Shouguang City, Weifang City, Shandong Province Patentee after: SHANDONG LONGXING PLASTIC FILM TECHNOLOGY Co.,Ltd. Address before: 262700 Lingang Industrial Park, Yangkou Town, Shouguang City, Weifang City, Shandong Province Patentee before: SHANDONG JIANYUANCHUN PACKING MATERIAL CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150902 |
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| CF01 | Termination of patent right due to non-payment of annual fee |