CN202321149U - Packaging film capable of being biologically degraded completely - Google Patents
Packaging film capable of being biologically degraded completely Download PDFInfo
- Publication number
- CN202321149U CN202321149U CN2011204467058U CN201120446705U CN202321149U CN 202321149 U CN202321149 U CN 202321149U CN 2011204467058 U CN2011204467058 U CN 2011204467058U CN 201120446705 U CN201120446705 U CN 201120446705U CN 202321149 U CN202321149 U CN 202321149U
- Authority
- CN
- China
- Prior art keywords
- packaging film
- polylactic acid
- middle layer
- layer
- waterproof performance
- 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 - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
A packaging film capable of being biologically degraded completely comprises a polyhydroxyalkanoate (PHA) surface layer, a polylactic acid middle layer and degradable non-woven fabric, wherein the polylactic acid middle layer with better tensile strength but poor waterproof performance is arranged on the degradable non-woven fabric and in the middle of the packaging film; the PHA surface layer with relatively better waterproof performance is arranged on the polylactic acid middle layer, is a thin film layer ensuring complete biological degradation, and has a better waterproof performance than the polylactic acid middle layer, while the crystallization is slow during formation, adhesion is caused easily, and the strength is poor. The three layers of the thin film capable of being biologically degraded completely are combined together, so as to meet the technical requirement on complete biological degradation due to common complete biological degradation characteristics, and meet certain strength requirements due to respective technical characteristics. The packaging film provided by the utility model has the advantages that the integral structure is simple; the use is convenient; the stability is good; and the reliability is high.
Description
Technical field
The utility model relates to packaging film, relates in particular to the fully biodegradable packaging film.
Background technology
The packaging film of prior art; Adopt single layer structure, adopt Vinyl chloride resin, plasticizer, stabilizer and other processing aid to process, it is lower to be prone to production and cost; But the packaging film intensity of single layer structure is low; Especially under the lower environmental conditions of temperature, can hardening become fragile, have a strong impact on normal use.One Chinese patent application 91101988.X discloses a kind of " non-porous polyvinyl chloride film for saltworks ", adopts two-layer polyvinyl chloride film to process through compound side cut, compares with single layer version; Its intensity increases; Prior art also has some to adopt the complex film of three-decker form, on intensity, all increases, but does not all have degradable attribute; The packaging film of this difficult degraded of long-term use certainly will cause negative influence to environment.
The utility model content
The purpose of the utility model is; Overcome the weak point of prior art; A kind of fully biodegradable packaging film is provided; Adopt the version of multilayer, both can guarantee under the lower environmental conditions of temperature, normally to use, result of use can be arranged again preferably and have degradable preferably attribute.
The described fully biodegradable packaging film of the utility model includes PHA top layer, PLA interlayer and degradable nonwoven fabrics and forms.The described fully biodegradable packaging film of the utility model is basic unit with the degradable nonwoven fabrics, and this degradable nonwoven fabrics has the good anti tear and the characteristic of anti.On degradable nonwoven fabrics, be provided with the PLA interlayer, this PLA interlayer has pulling strengrth preferably; But its poor water resistance, thus this PLA interlayer is arranged on the centre, on the PLA interlayer; Be provided with fastness to water PHA top layer relatively preferably again, this is the thin layer of one deck fully biodegradable, and its fastness to water is compared better with the PLA interlayer; But crystallization is slow during moulding, is prone to adhesion, intensity difference.
The described fully biodegradable packaging film of the utility model; Be with in the combination of the thin layer of three layers of fully biodegradable together; With the denominator of fully biodegradable, satisfy the technical requirements of fully biodegradable, satisfy certain intensity requirements with separately technical characterstic again.The described fully biodegradable packaging film of the utility model, integral structure is simple, and is easy to use, good stability, reliability is high.
Description of drawings
Accompanying drawing 1 is the structural representation of the said fully biodegradable packaging film of the utility model.1-PHA top layer, 2-PLA interlayer, 3-degradable nonwoven fabrics.
The specific embodiment
Existing with reference to accompanying drawing 1, explain as follows in conjunction with embodiment: the described fully biodegradable packaging film of the utility model includes PHA top layer 1, PLA interlayer 2 and degradable nonwoven fabrics 3 and forms.The described fully biodegradable packaging film of the utility model is a basic unit with degradable nonwoven fabrics 3, and this degradable nonwoven fabrics 3 has the good anti tear and the characteristic of anti.On degradable nonwoven fabrics 3, be provided with PLA interlayer 2, this PLA interlayer 2 has pulling strengrth preferably; But its poor water resistance, thus this PLA interlayer 2 is arranged on the centre, on PLA interlayer 2; Be provided with fastness to water PHA top layer 1 relatively preferably again, this is the thin layer of one deck fully biodegradable, and its fastness to water is compared with PLA interlayer 2 better; But crystallization is slow during moulding, is prone to adhesion, intensity difference.The described fully biodegradable packaging film of the utility model; Be with in the combination of the thin layer of three layers of fully biodegradable together; With the denominator of fully biodegradable, satisfy the technical requirements of fully biodegradable, satisfy certain intensity requirements with separately technical characterstic again.The described fully biodegradable packaging film of the utility model, integral structure is simple, and is easy to use, good stability, reliability is high.
Claims (1)
1. the fully biodegradable packaging film is characterized in that on degradable nonwoven fabrics (3), being provided with PLA interlayer (2), on PLA interlayer (2), is provided with PHA top layer (1) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204467058U CN202321149U (en) | 2011-11-14 | 2011-11-14 | Packaging film capable of being biologically degraded completely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204467058U CN202321149U (en) | 2011-11-14 | 2011-11-14 | Packaging film capable of being biologically degraded completely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202321149U true CN202321149U (en) | 2012-07-11 |
Family
ID=46433139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204467058U Expired - Fee Related CN202321149U (en) | 2011-11-14 | 2011-11-14 | Packaging film capable of being biologically degraded completely |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202321149U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580700A (en) * | 2021-08-02 | 2021-11-02 | 浙江大成新材料科技有限公司 | High-strength double-layer composite fully-degradable packaging material and preparation method and application thereof |
-
2011
- 2011-11-14 CN CN2011204467058U patent/CN202321149U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580700A (en) * | 2021-08-02 | 2021-11-02 | 浙江大成新材料科技有限公司 | High-strength double-layer composite fully-degradable packaging material 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHANDONG PENGUIN PLASTIC GROUP CO., LTD. Assignor: Wang Changqing Contract record no.: 2012370000274 Denomination of utility model: Packaging film capable of being biologically degraded completely Granted publication date: 20120711 License type: Exclusive License Record date: 20121224 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121114 |