Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of biodegradable film

A biodegradable and thin-film technology, applied in chemical instruments and methods, flat products, paints containing biocides, etc., can solve the problems of short shelf life, poor flexibility, low impact strength and elongation at break, etc.

Active Publication Date: 2019-09-10
福建恒安家庭生活用品有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polylactic acid also has some properties that need to be improved. For example, the flexibility of polylactic acid is poor, the impact strength and elongation at break are lower than those of general resins, and the shelf life is shorter.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The present embodiment provides a kind of preparation method of biodegradable film, comprises the steps:

[0035] (1) polylactic acid, polybutylene succinate and polyadipate / butylene terephthalate are mixed and stirred according to a predetermined ratio to obtain mixed material A; wherein, the mass fraction of polylactic acid is 10- 30 parts; the mass fraction of the polybutylene succinate is 40-70 parts; the mass fraction of the polyadipate / butylene terephthalate is 1-20 fractions;

[0036] (2) Mix and stir polyhydroxyalkanoate and polypropylene carbonate according to a predetermined ratio to obtain mixed material B; wherein, the mass fraction of the polyhydroxyalkanoate is 10-60 parts; the polyhydroxyalkanoate The mass fraction of propyl ester is 60-80 parts;

[0037] (3) blowing the mixed raw material A obtained in step (1) at a temperature of 120°C to 180°C to obtain the first film, spraying nano-silver antibacterial agent on the lower surface of the prepared first...

Embodiment 2

[0041] The present embodiment provides a kind of preparation method of biodegradable film, comprises the steps:

[0042] (1) Mix polylactic acid, polybutylene succinate and polyadipate / butylene terephthalate according to a predetermined ratio and stir to obtain mixed material A; wherein, the mass fraction of polylactic acid is 15 parts The mass fraction of the polybutylene succinate is 55 parts; the mass fraction of the polyadipate / butylene terephthalate is 10 parts;

[0043] (2) Mix and stir polyhydroxyalkanoate and polypropylene carbonate according to a predetermined ratio to obtain mixed material B; wherein, the mass fraction of the polyhydroxyalkanoate is 30 parts; the polypropylene carbonate The mass parts number is 70 parts.

[0044] (3) The mixed raw material A obtained in step (1) is blown at a temperature of 200°C to obtain the first film, and the lower surface of the prepared first film is sprayed with nano-silver antibacterial agent, and at a temperature of 20°C N...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a biodegradable film. Including (1) mixing polylactic acid, polybutylene succinate and polybutylene adipate / terephthalate according to a predetermined ratio and stirring to obtain mixed material A; (2) mixing polyhydroxyalkanoate and Polypropylene carbonate is mixed and stirred according to a predetermined ratio to obtain a mixed material B; (3) the mixed raw material A obtained in the step (1) is blown to obtain a first film; the mixed material B obtained in the step (2) is Film blowing obtains the second film; (4) the first film in step (1) is carried out transverse stretching, the second film obtained in step (2) is placed on the upper surface of the first film, and the first film and The second film is bonded to obtain a biodegradable film.

Description

technical field [0001] The invention relates to a biodegradable film and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and hygiene requirements, sanitary products have developed rapidly and have penetrated into every family, and their consumption has shown a rapid upward trend. However, traditional sanitary products generally use PE, PP and other materials. The disadvantage is that the sanitary products cannot be degraded after use, causing great damage to the environment and causing "white pollution". Biodegradable plastics can finally decompose into carbon dioxide and water under the action of enzymes in microorganisms or animals and plants that exist widely in nature and return to the environment. The application of such materials is one of the main ways to solve the problem of "white pollution" caused by traditional plastics. [0003] Polylactic acid can be completely degraded after use and will not pollut...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02B32B7/12B32B27/08B32B27/28B32B27/36B32B33/00B32B37/12B32B37/15B32B38/00C08J7/04B29L7/00
CPCB32B7/12B32B27/08B32B27/28B32B27/36B32B33/00B32B37/1207C08J2367/02C08J2369/00C08J2467/04C08J2467/02B32B2255/10B32B2250/24B32B2307/7145C09D5/14C08K2201/011C08K2003/0806C08L2205/03C08J5/12C09D133/04C09D101/286C09D183/04B29C69/02B32B37/153B32B38/164C08J2433/04C08J2401/28C08J2483/04B29L2007/00B29L2009/00C08L1/286C08L83/04C08K3/08C08L33/04C08L1/28
Inventor 翁文伟王伟祝二斌林一速林东山
Owner 福建恒安家庭生活用品有限公司