CN205115361U - Biodegradable high resistant separates polylactic acid sheet - Google Patents
Biodegradable high resistant separates polylactic acid sheet Download PDFInfo
- Publication number
- CN205115361U CN205115361U CN201520813146.8U CN201520813146U CN205115361U CN 205115361 U CN205115361 U CN 205115361U CN 201520813146 U CN201520813146 U CN 201520813146U CN 205115361 U CN205115361 U CN 205115361U
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- polylactic acid
- biodegradable high
- acid sheet
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- utility
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Abstract
Biodegradable high resistant separates polylactic acid sheet. The utility model provides a simple structure, convenient processing, the reliable biodegradable high resistant separates polylactic acid sheet of environmental protection. Including the polylactic acid substrate, the surface of polylactic acid substrate scribbles waterborne primer layer, the surface on waterborne primer layer scribbles PVDC latex layer. The utility model discloses use the polylactic acid sheet as the substrate, through the waterborne emulsion (PVDC latex) of coating waterborne primer and polyvinylidene chloride interpolymer, it scribbles the film thickness 1 micron to 4 microns to make the finished product. The utility model discloses biodegradable, environmental protection are reliable, have separation nature and thermoforming nature.
Description
Technical field
The utility model relates to the plastics sucking moulding holder box packagings such as food, medicine, healthcare products, particularly relates to biodegradable high-barrier polylactic acid sheet material.
Background technology
Plastic suction support box is through a kind of sheet material of plane, obtains through thermoforming (being commonly referred to plastics sucking moulding); Packaged content-filledly to enter needing, then use epiphragma (a kind of composite membrane of applicable heat-sealing) to carry out heat-sealing to encapsulate; This form seals also referred to as the shaping-FILLING filling of FFS(FORMING-SEALING in the world).
In prior art, the sheet material of use uses a large amount of plastics, and not easily degraded causes environmental pollution serious; But when using degradable sheet material, have good ventilation property, its barrier is poor.
Utility model content
The utility model, for above problem, provides a kind of structure simple, convenient processing, the reliable biodegradable high-barrier polylactic acid sheet material of environmental protection.
The technical solution of the utility model is: comprise poly(lactic acid) base material, and the surface of described poly(lactic acid) base material scribbles aqueous bottom glue layer, and the surface of described aqueous bottom glue layer scribbles PVDC latex layer.
Described aqueous bottom glue layer is aqueous polyurethane.
The thickness of described aqueous bottom glue layer is 1-4 micron, and the thickness of described PVDC latex layer is 1-4 micron.
The surface tension of described poly(lactic acid) base material is greater than 40 dyne.
By infrared drying between described poly(lactic acid) base material and aqueous bottom glue layer, between described PVDC latex layer and aqueous bottom glue layer, pass through infrared drying.
The utility model take polylactic acid sheet material as base material, and through being coated with the water-based emulsion (PVDC latex) of aqueous bottom glue and polyvinylidene dichloride interpolymer, its coating thickness is at 1 micron to 4 microns, thus obtained finished product.
This high-barrier poly(lactic acid) (PLA) sheet material just can be able to complete on existing coating apparatus, does not need to add new coating apparatus; Meanwhile, due to adopt primer and barrier layer be all water-based emulsion, ensure that product no solvent residue, guarantee reliable in quality; Solvent evaporates is not had, more environmental protection, safer (solvent is inflammable and explosive) in production process; Coating apparatus cost is lower, there is no need to take precautions against fire; Store in a warehouse also convenient, store few, carrying is few.
The utility model is biodegradable, environmental protection is reliable; There is barrier and hot formability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure, 1 is poly(lactic acid) base material, and 2 is aqueous bottom glue layers, and 3 is PVDC latex layers.
Embodiment
The utility model as shown in Figure 1, comprises poly(lactic acid) base material 1, and the surface of described poly(lactic acid) base material 1 scribbles aqueous bottom glue layer 2, and the surface of described aqueous bottom glue layer 2 scribbles PVDC latex layer 3; Poly(lactic acid) base material is coated with aqueous bottom glue and PVDC latex respectively, ensure that barrier.
Described aqueous bottom glue layer is aqueous polyurethane.
The thickness of described aqueous bottom glue layer is 1-4 micron, and the thickness of described PVDC latex layer is 1-4 micron.
The surface tension of described poly(lactic acid) base material is greater than 40 dyne, improves the cohesive force of poly(lactic acid) base material.
By infrared drying between described poly(lactic acid) base material and aqueous bottom glue layer, between described PVDC latex layer and aqueous bottom glue layer, pass through infrared drying; In production process, all by infrared drying, hot formability is reliable.
The utility model at work, the preparation method of high-barrier PLA sheet material:
1, unreel, the linear velocity of sheet material: 30-60 m/min; 2, corona treatment is carried out to PLA sheet material; 3, aqueous bottom glue is coated with; 4, infrared drying, infrared(ray)lamp tube power: 5-10KW; 5, through oven drying, oven temperature: 60-80 DEG C; 6, be coated with PVDC latex, coating thickness is at 1-4 micron; 7, infrared drying, infrared(ray)lamp tube power: 10-20KW; 8, through oven drying, oven temperature: 60-100 DEG C; 9, cool, sheet cools is to 30-40 DEG C; 10, rolling.
Wherein, step 2 is corona treatment processes, and this process is the process of high-frequency charge ionized substrate surface, makes the surface tension of PLA sheet material reach more than 40 dyne, like this, primer and PLA surface can be made to have good cohesive force.
Claims (4)
1. biodegradable high-barrier polylactic acid sheet material, is characterized in that, comprises poly(lactic acid) base material, and the surface of described poly(lactic acid) base material scribbles aqueous bottom glue layer, and the surface of described aqueous bottom glue layer scribbles PVDC latex layer.
2. biodegradable high-barrier polylactic acid sheet material according to claim 1, is characterized in that, described aqueous bottom glue layer is aqueous polyurethane.
3. biodegradable high-barrier polylactic acid sheet material according to claim 1, is characterized in that, the thickness of described aqueous bottom glue layer is 1-4 micron, and the thickness of described PVDC latex layer is 1-4 micron.
4. biodegradable high-barrier polylactic acid sheet material according to claim 1, is characterized in that, the surface tension of described poly(lactic acid) base material is greater than 40 dyne.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813146.8U CN205115361U (en) | 2015-10-20 | 2015-10-20 | Biodegradable high resistant separates polylactic acid sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520813146.8U CN205115361U (en) | 2015-10-20 | 2015-10-20 | Biodegradable high resistant separates polylactic acid sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205115361U true CN205115361U (en) | 2016-03-30 |
Family
ID=55570985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520813146.8U Expired - Fee Related CN205115361U (en) | 2015-10-20 | 2015-10-20 | Biodegradable high resistant separates polylactic acid sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205115361U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753017A (en) * | 2017-01-23 | 2017-05-31 | 广东天元实业集团股份有限公司 | A kind of biodegradable Jing Yin tape and preparation method thereof |
-
2015
- 2015-10-20 CN CN201520813146.8U patent/CN205115361U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106753017A (en) * | 2017-01-23 | 2017-05-31 | 广东天元实业集团股份有限公司 | A kind of biodegradable Jing Yin tape and preparation method thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160330 Termination date: 20171020 |