CN2761416Y - Fully biodegradable laminated material - Google Patents
Fully biodegradable laminated material Download PDFInfo
- Publication number
- CN2761416Y CN2761416Y CN 200420012894 CN200420012894U CN2761416Y CN 2761416 Y CN2761416 Y CN 2761416Y CN 200420012894 CN200420012894 CN 200420012894 CN 200420012894 U CN200420012894 U CN 200420012894U CN 2761416 Y CN2761416 Y CN 2761416Y
- Authority
- CN
- China
- Prior art keywords
- polylactic acid
- coating
- paper
- pla
- coating layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Laminated Bodies (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The utility model relates to a fully biodegradable composite material which comprises a three-layer structure, wherein the material of a paper layer (1) is mainly plant fibre or polylactic acid fiber, a coating layer (2) is a polylactic acid composition coating layer which is composed of polylactic acid or polylactic acid copolymer and plasticizer, and the coating layer (3) is a foaming polylactic acid composition coating layer which is composed of polylactic acid or polylactic acid copolymer and plasticizer. The material with the structure particularly has a thermal insulation function, and can be used for manufacturing disposable packages, such as paper glasses, dining boxes, etc.
Description
Technical field
The utility model belongs to the structural design of complete biodegradable composite.
Background technology
Macromolecular material based on petrochemicals is used widely in national defence and civil area with film, sheet material, tubing, fiber, foams and other forms.These macromolecular materials all become discarded object and natural environment are caused certain influence after use.Though a large amount of research and industrialization effort have been done to the regeneration of high molecular waste material in countries in the world, it is unsatisfactory to produce effects, and can not fundamentally solve the pollution problem of high molecular waste material to natural environment.In order to overcome this problem, countries in the world give increasing attention to the complete biodegradable macromolecular material.
PLA is a kind of macromolecular material of complete biodegradable, and the enzyme effect by microorganisms in natural environment finally is degraded into inorganic substances such as water and carbon dioxide.In degradable thermoplastic macromolecule material, PLA has the highest fusing point, and therefore the highest glass transition temperature and mechanical strength have better heat-resisting.But there are shortcomings such as poor toughness, processing temperature scope are narrower, cost of raw material height in PLA, is restricted in Application for Field such as application that requires pliability such as flexible packages.By improving the toughness of PLA to a great extent, especially help processing and reduce cost with the plasticizer blend.Can be with extruding through the PLA of plasticising, injection moulding, curtain coating, blowing, spinning, multiple mode such as biaxial stretch-formed is processed.Coating plasticized poly lactic acid material can substitute the widely used now polyethylene coating paper that can not degrade fully on paper or cardboard.Can expect that this plasticized poly lactic acid material will be widely used in fields such as disposable packagings.
Chinese invention patent ZL 99125782.0, ZL 99252343.5 and ZL 00263400.7 relate to the composite material for package of food of paper composite construction, and its skin is polylactic acid layers or copolymer of poly lactic acid layer.In these three patents, do not relate to plasticized poly lactic acid or polylactic acid foam material, so its workability, low cost and heat insulation property are restricted.
Summary of the invention
The purpose of this utility model provides a kind of structural design of complete biodegradable composite.
The utility model comprises three-decker, and wherein the intermediate layer is a ply of paper, in the both sides of ply of paper polymeric coating layer is arranged respectively.The ply of paper material therefor mainly is string or acid fiber by polylactic, coating PLA coating on a side of ply of paper, coating expanded polylactic acid coating on the opposite side of ply of paper.PLA can be the copolymer of crystalline polylactic acid or amorphism PLA or PLA and the poly (lactic acid) composition that plasticizer is formed.
Description of drawings
Embodiment of the present utility model is described below in conjunction with the accompanying drawings:
The specific embodiment
The both sides of ply of paper among the figure (1) be coating (2) and coating (3).Wherein, ply of paper (1) material therefor is string or acid fiber by polylactic, coating (2) is the copolymer of PLA or PLA and the poly (lactic acid) composition coating that plasticizer is formed, and coating (3) is the copolymer of PLA or PLA and the foaming poly (lactic acid) composition coating that plasticizer is formed.
The coated paper that possesses this structure is convenient to suitability for industrialized production, and has the complete biodegradable characteristic, and this coated paper can have functions such as waterproof, choke, antibiotic, colored printing, heat-sealing, especially has incubation and thermal insulation function and low-cost characteristics.Coated paper with this kind structure can be applied to make disposable packagings such as hot beverage dixie cup, cutlery box.
Claims (4)
1, a kind of complete biodegradable composite is made up of ply of paper (1) and the coating (2) and the coating (3) of both sides.
2, a kind of complete biodegradable composite as claimed in claim 1 is characterized in that described ply of paper (1) material is string or acid fiber by polylactic.
3, a kind of complete biodegradable composite as claimed in claim 1 is characterized in that the poly (lactic acid) composition coating that described coating (2) is formed for the copolymer and the plasticizer of PLA or PLA.
4, a kind of complete biodegradable composite as claimed in claim 1 is characterized in that the foaming poly (lactic acid) composition coating that described coating (3) is formed for the copolymer and the plasticizer of PLA or PLA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420012894 CN2761416Y (en) | 2004-12-24 | 2004-12-24 | Fully biodegradable laminated material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420012894 CN2761416Y (en) | 2004-12-24 | 2004-12-24 | Fully biodegradable laminated material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2761416Y true CN2761416Y (en) | 2006-03-01 |
Family
ID=36094551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420012894 Expired - Lifetime CN2761416Y (en) | 2004-12-24 | 2004-12-24 | Fully biodegradable laminated material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2761416Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105500A1 (en) * | 2009-03-16 | 2010-09-23 | 伟盟工业股份有限公司 | Polylactic acid foam composition |
| CN111172810A (en) * | 2020-01-07 | 2020-05-19 | 华南理工大学 | Completely biodegradable heat-sealing paper and preparation method and application thereof |
-
2004
- 2004-12-24 CN CN 200420012894 patent/CN2761416Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010105500A1 (en) * | 2009-03-16 | 2010-09-23 | 伟盟工业股份有限公司 | Polylactic acid foam composition |
| CN111172810A (en) * | 2020-01-07 | 2020-05-19 | 华南理工大学 | Completely biodegradable heat-sealing paper and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141224 Granted publication date: 20060301 |