CN202895856U - Polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet - Google Patents
Polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet Download PDFInfo
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- CN202895856U CN202895856U CN 201220562024 CN201220562024U CN202895856U CN 202895856 U CN202895856 U CN 202895856U CN 201220562024 CN201220562024 CN 201220562024 CN 201220562024 U CN201220562024 U CN 201220562024U CN 202895856 U CN202895856 U CN 202895856U
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- polyvinylidene chloride
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Abstract
The utility model relates to a polyethylene composite packaging material and particularly relates to a polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet. The polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet comprises a polyvinyl chloride base layer, a polyvinylidene chloride layer and a low density polyethylene layer, wherein the polyvinyl chloride base layer and the polyvinylidene chloride layer are fixed through bonding, and the polyvinylidene chloride layer and the low density polyethylene layer are fixed through bonding. According to the polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet, the characteristics of each compositing layer can be adequately expressed, so that the composite hard sheet not only has the advantages of good chemical corrosion resistance, higher chemical stability, good mechanical property, light weight and the like, but also has a good barrier property, the shelf lives of foods and the validity periods of drugs can be greatly prolonged, and the application range is very wide; and the polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet further has the advantages of simple manufacturing process, safety, environmental friendliness, low cost and the like.
Description
Technical field
The utility model relates to the polyethylene compound package material, relates in particular to a kind of polyvinyl chloride/polyvinylidene chloride/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 the single larger shortcoming of PVC layer packaging material is exactly that barrier and sealing property are bad; barrier is bad; can not effectively delay the oxidation deterioration phenomenon of food, medicine; make its premature failure; food also can be owing to packaging bag does not have good protective effect; cause dehydration to become dry mouthfeel variation, loss of aroma etc.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, even it is very successful that the bad vacuum food of poor sealing 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.
Polyvinylidene chloride (PVDC) is because its intermolecular cohesive force is strong, degree of crystallinity is high, chlorine atom in the PVDC molecule has hydrophobicity, can not form hydrogen bond, oxygen molecule and hydrone are difficult in the PVDC molecule mobile, thereby it is moist with resistance to make it have good oxygen barrier, and its oxygen barrier is not subjected to the impact of ambient humidity.Under any temperature or damp condition, have the ability of remarkable obstruct steam, oxygen, smell and fragrance concurrently, be the best plastic package material of combination property aspect barrier of generally acknowledging at present.PVDC is the high-tech new product, and is with high content of technology, difficulty is large, no matter be polymerization technique, or plastic processing, all need to have very large input, so the PVDC price is also higher.Some businessmans often are reluctant to select the higher PVDC of price as packaging material, thereby have limited its extensive use in order to save packing cost
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 provides that a kind of barrier property is good, the polyvinyl chloride/polyvinylidene chloride of good seal performance, safety and environmental protection/low density polyethylene (LDPE) composite hard sheet.
The technical scheme that realizes the utility model purpose is: a kind of polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet, comprise polyvinyl chloride basic unit and polyvinylidene chloride layer and low density polyethylene layer, described polyvinyl chloride basic unit and polyvinylidene chloride layer bonding are fixing, and described polyvinylidene chloride layer and low density polyethylene layer bonding are fixing.
Above-mentioned polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet is provided with the first adhesive layer between described polyvinyl chloride basic unit and the polyvinylidene chloride layer.
Above-mentioned polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet is provided with the second adhesive layer between described polyvinylidene chloride and the low density polyethylene layer.
Above-mentioned polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet, described polyvinyl chloride groundwork thickness is 0.2 ~ 0.5mm, and the thickness of polyvinylidene chloride 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 polyvinyl chloride and polyvinylidene chloride and low density polyethylene (LDPE), can give full play to polyvinyl chloride and polyvinylidene chloride and low density polyethylene (LDPE) advantage separately, make polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet namely have good chemical resistance, higher chemical stability, the advantages such as good mechanical performance and light weight, have again good barrier property and sealing property, can greatly prolong the term of validity of shelf life and the medicine of food, range of application is extremely wide;
(2) polyvinyl chloride basic unit and polyvinylidene chloride layer and low density polyethylene layer link together securely by adhesive layer, and interlayer is difficult for peeling off in conjunction with closely; And polyvinylidene chloride layer and low density polyethylene layer can be made into different thickness according to actual needs, and manufacturing process is simple, and have advantages of that safety and environmental protection, cost are 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, polyvinyl chloride basic unit; 2, the first adhesive layer; 3, polyvinylidene chloride layer; 4, the second adhesive layer; 5, low density polyethylene layer.
The specific embodiment
(embodiment 1)
See Fig. 1, the utlity model has polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 and low density polyethylene layer 5, polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 are fixing by the first adhesive layer 2 bondings, and polyvinylidene chloride layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Polyvinyl chloride basic unit 1 thickness is 0.2mm, and the thickness of polyvinylidene chloride layer 3 is 5.88 μ m, and the thickness of low density polyethylene layer is 4.16 μ m.
(embodiment 2)
See Fig. 1, the utlity model has polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 and low density polyethylene layer 5, polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 are fixing by the first adhesive layer 2 bondings, and polyvinylidene chloride layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Polyvinyl chloride basic unit 1 thickness is 0.3mm, and the thickness of polyvinylidene chloride layer 3 is 20.5 μ m, and the thickness of low density polyethylene layer is 35.12 μ m.
(embodiment 3)
See Fig. 1, the utlity model has polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 and low density polyethylene layer 5, polyvinyl chloride basic unit 1 and polyvinylidene chloride layer 3 are fixing by the first adhesive layer 2 bondings, and polyvinylidene chloride layer 3 and low density polyethylene layer 5 are fixing by the second adhesive layer 4 bondings.Polyvinyl chloride basic unit 1 thickness is 0.5mm, and the thickness of polyvinylidene chloride layer 3 is 70.58 μ m, and the thickness of low density polyethylene layer 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. polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet, it is characterized in that: comprise polyvinyl chloride basic unit (1) and polyvinylidene chloride layer (3) and low density polyethylene layer (5), described polyvinyl chloride basic unit (1) and polyvinylidene chloride layer (3) bonding are fixing, and described polyvinylidene chloride layer (3) and low density polyethylene layer (5) bonding are fixing.
2. polyvinyl chloride/polyvinylidene chloride 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 polyvinyl chloride basic unit (1) and the polyvinylidene chloride layer (3).
3. polyvinyl chloride/polyvinylidene chloride 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 polyvinylidene chloride layer (3) and the low density polyethylene layer (5).
4. according to claim 1 and 2 or 3 described polyvinyl chloride/polyvinylidene chloride/low density polyethylene (LDPE) composite hard sheet, it is characterized in that: described polyvinyl chloride basic unit (1) thickness is 0.2 ~ 0.5mm, the thickness of polyvinylidene chloride 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 201220562024 CN202895856U (en) | 2012-10-29 | 2012-10-29 | Polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220562024 CN202895856U (en) | 2012-10-29 | 2012-10-29 | Polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202895856U true CN202895856U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220562024 Expired - Fee Related CN202895856U (en) | 2012-10-29 | 2012-10-29 | Polyvinyl chloride/polyvinylidene chloride/low density polyethylene composite hard sheet |
Country Status (1)
| Country | Link |
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| CN (1) | CN202895856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195166A (en) * | 2022-07-09 | 2022-10-18 | 浙江多凌药用包装材料有限公司 | Easy-to-tear polyvinyl chloride-polyvinylidene chloride-polyethylene compounding process |
-
2012
- 2012-10-29 CN CN 201220562024 patent/CN202895856U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195166A (en) * | 2022-07-09 | 2022-10-18 | 浙江多凌药用包装材料有限公司 | Easy-to-tear polyvinyl chloride-polyvinylidene chloride-polyethylene compounding process |
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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 |