CN202895818U - Casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice - Google Patents
Casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice Download PDFInfo
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- CN202895818U CN202895818U CN 201220556812 CN201220556812U CN202895818U CN 202895818 U CN202895818 U CN 202895818U CN 201220556812 CN201220556812 CN 201220556812 CN 201220556812 U CN201220556812 U CN 201220556812U CN 202895818 U CN202895818 U CN 202895818U
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- polyester
- density polyethylene
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- polypropylene aluminizer
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Abstract
The utility model discloses a composite packaging material, and particularly relates to a casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice. The composite hard slice comprises a casting polypropylene aluminizer layer, a polyester base layer and a low-density casting polypropylene aluminizer base layer, wherein the polyester layer is bonded and fixed with the low-density polyethylene layer through an adhesive. The composite hard slice can make full use of advantages of casting polypropylene aluminizer, polyester and low-density polyethylene, so that the casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice has the advantages of good chemical resistance, high chemical stability, good mechanical property and the like, has excellent sealing property and excellent heat-resistant property, can greatly prolong the shelf life of food and the useful life of drugs, expands the application of food packaging, and is wide in application range, simple in fabrication process, safe and environment-friendly, low in cost and the like.
Description
Technical field
The utility model relates to the polyethylene compound package material, relates in particular to a kind of cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet.
Background technology
Raising along with rapid development of economy and people's living standard, demand to instant food such as microwave food, leisure food and frozen food will constantly increase, quality requirement to the medicine packing also improves constantly, this will directly drive the demand of relevant food packing, and food, medicine and package packing machine industry also will be kept positive growth within from now on a period of time.The material that now is used for food, medical packaging has a lot, such as PP film, polyvinyl chloride (PVC), aluminium foil etc.PVC has good chemical resistance as a kind of packaging material, higher chemical stability, and have that its transparency is good, luminosity is good, the advantage such as light weight, good mechanical property, regeneration are easy.But it is bad that the shortcoming that PVC layer packaging material are larger is exactly sealing property, even it is very successful that the bad vacuum food of gas barrier property is packed vacuum, behind exposed to air, airborne oxygen is easy to reenter in the evacuated packaging bag, and this has just lost the due effect of vacuum bag.On the other hand, for some dulcet contents, the entering and pack overflowing of interior fragrance and all can reduce client to the satisfaction of product of air.Not only may damage people's health, also can cause product quality undesirable owing to the problem of packing, cause heavy economic losses to enterprise, and its heat resistance be bad, the not anti-food that needs the boiling heating etc.
Polyester (PET) can be easily method by quick cooling substantially be in the PET goods of amorphous state, high transparent, easy stretching, so PET both can be made into the biaxial tension packaging film during as packaging material, can obtain high strength, high transparent stretch blow bottle by the amorphous state bottle base again, can also directly extrude or be blow molded into non-stretching hollow container.
The performances such as that the PET film has is transparent, oil resistant, the guarantor is fragrant, health is reliable and the serviceability temperature scope is wide (thermophilic digestion and frozen-pack all can), but heat sealing property is poor, must use with other Film laminateds, and price is high than General plastics film, has limited the application on the packaging of PET film.
Low density polyethylene (LDPE) (LDPE) is ethylene free radical polymerization and the thermoplastic that obtains under the high pressure, LDPE is the oldest member in the polyethylene family in the resin, it combines some good performances: transparent, chemical inertness, sealability are good, are easy to processing and forming etc.The film that low density polyethylene (LDPE) (LDPE) is made has showed good optical property, intensity, bent rich property, sealing and slowly smell diffusivity and chemical stability.
The utility model content
The purpose of this utility model is to overcome the defective that prior art exists, and a kind of good seal performance, cast polypropylene aluminizer/polyester that heat resistance is good/low density polyethylene (LDPE) composite hard sheet are provided.
The technical scheme that realizes the utility model purpose is: a kind of cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet, comprise cast polypropylene aluminizer basic unit and polyester layer and low density polyethylene layer, described cast polypropylene aluminizer basic unit and polyester layer bonding are fixing, and described polyester layer and low density polyethylene layer bonding are fixing.
Above-mentioned cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet is provided with the first adhesive layer between described cast polypropylene aluminizer basic unit and the polyester layer.
Above-mentioned cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet is provided with the second adhesive layer between described polyester layer and the low density polyethylene layer.
Above-mentioned cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet, described cast polypropylene aluminizer groundwork thickness is 0.2 ~ 0.5mm, and the thickness of polyester layer is 5.88 ~ 70.58 μ m, and low density polyethylene layer thickness is 4.16 ~ 60.45 μ m.
After adopting technique scheme, the utlity model has following positive effect:
(1) the utility model is the composite hard sheet of cast polypropylene aluminizer, polyester and low density polyethylene (LDPE), can give full play to cast polypropylene aluminizer, polyester and low density polyethylene (LDPE) advantage separately, make cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet namely have good chemical resistance, higher chemical stability, the good advantages such as mechanical performance, has again good sealing property, and good heat resistance can greatly prolong the term of validity of the shelf life of food and medicine and expand the application scenario of packaging for foodstuff, and range of application is extremely wide;
(2) cast polypropylene aluminizer basic unit/polyester and low density polyethylene layer link together securely by adhesive layer, and interlayer is difficult for peeling off in conjunction with closely; And low density polyethylene layer can be made into different thickness according to actual needs, and manufacturing process is simple, and has safety and environmental protection, advantage that cost is low.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is the utility model structural representation.
Each label represents among the figure:
1, cast polypropylene aluminizer basic unit; 2, the first adhesive layer; 3, polyester layer; 4, the second gluing layer; 5, low density polyethylene layer.
The specific embodiment
(embodiment 1)
See Fig. 1, the utlity model has cast polypropylene aluminizer basic unit 1 and polyester layer 3 and low density polyethylene layer 5, cast polypropylene aluminizer basic unit 1 and low density polyethylene layer 3 are fixing by the first adhesive layer 2 bondings, and polyester layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Cast polypropylene aluminizer basic unit 1 thickness is 0.2mm, and the thickness of polyester layer 3 is 5.88 μ m, and the thickness of low density polyethylene layer 5 is 4.16 μ m.
(embodiment 2)
See Fig. 1, the utlity model has cast polypropylene aluminizer basic unit 1 and polyester layer 3 and low density polyethylene layer 5, cast polypropylene aluminizer basic unit 1 and polyester layer 3 are fixing by the first adhesive layer 2 bondings, and polyester layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Cast polypropylene aluminizer basic unit 1 thickness is 0.3mm, and the thickness of polyester layer 3 is 20.5 μ m, and the thickness of low density polyethylene layer 5 is 35.12 μ m.
(embodiment 3)
See Fig. 1, the utlity model has cast polypropylene aluminizer basic unit 1 and polyester layer 3 and low density polyethylene layer 5, cast polypropylene aluminizer basic unit 1 and polyester layer 3 are fixing by the first adhesive layer 2 bondings, and polyester layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Cast polypropylene aluminizer basic unit 1 thickness is 0.5mm, and the thickness of polyester layer 3 is 70.58 μ m, and the thickness of low density polyethylene layer 5 is 60.45 μ m.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheet, it is characterized in that: comprise cast polypropylene aluminizer basic unit (1) and polyester layer (3) and low density polyethylene layer (5), described cast polypropylene aluminizer basic unit (1) and polyester layer (3) bonding are fixing, and described polyester layer (3) and low density polyethylene layer (5) bonding are fixing.
2. cast polypropylene aluminizer/polyester according to claim 1/low density polyethylene (LDPE) composite hard sheet is characterized in that: be provided with the first adhesive layer (2) between described cast polypropylene aluminizer basic unit (1) and the polyester layer (3).
3. cast polypropylene aluminizer/polyester according to claim 1/low density polyethylene (LDPE) composite hard sheet is characterized in that: be provided with the second adhesive layer (4) between described polyester layer (3) and the low density polyethylene layer (5).
4. according to claim 1 and 2 or 3 described cast polypropylene aluminizer/polyester/low density polyethylene (LDPE) composite hard sheets, it is characterized in that: described cast polypropylene aluminizer basic unit (1) thickness is 0.2 ~ 0.5mm, the thickness of polyester layer (3) is 5.88 ~ 70.58 μ m, and low density polyethylene layer (5) thickness is 4.16 ~ 60.45 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556812 CN202895818U (en) | 2012-10-29 | 2012-10-29 | Casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556812 CN202895818U (en) | 2012-10-29 | 2012-10-29 | Casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202895818U true CN202895818U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220556812 Expired - Fee Related CN202895818U (en) | 2012-10-29 | 2012-10-29 | Casting polypropylene aluminizer/polyester/low-density polyethylene composite hard slice |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202895818U (en) |
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2012
- 2012-10-29 CN CN 201220556812 patent/CN202895818U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |