Biological degradable film and laminated material

A technology for degrading films and laminates, used in layered products, synthetic resin layered products, non-woven fabrics, etc., can solve the problem of slow degradation rate and achieve the effect of improving mechanical properties

Active Publication Date: 2012-09-19
U S PACIFIC NONWOVENS IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The technical problem to be solved by the present invention is to provide a biodegradable film and laminated material that can prolong the shelf life in a clean environment and accelerate degradation in a dirty environment in view of the above-mentioned slow degradation rate defects of the existing biodegradable materials

Method used

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  • Biological degradable film and laminated material
  • Biological degradable film and laminated material
  • Biological degradable film and laminated material

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Embodiment Construction

[0061] Although poly-3-hydroxybutyrate and poly-4-hydroxybutyrate polyester (P(3HB-co-4HB)) products are easily degraded in soil, sludge and seawater, the degradation rate in water lacking microorganisms Very slowly (Saito, Yuji, Shigeo Nakamura, Masaya Hiramitsu and Yoshiharu Doi, "Microbial Synthesis and Properties of Poly(3-Hydroxybutyrate-4-Hydroxybutyrate)", International Polymer 39 (1996), 169- 174). Therefore, P(3HB-co-4HB) products have a very long shelf life in a clean environment, such as dry storage in a sealed package or storage in a wet wipe cleaning solution. However, discarded P(3HB-co-4HB) fabrics, films and packaging materials are very Easily degradable. It should be noted that polylactic acid (PLA) is not easily degraded in the above-mentioned dirty environment, but is easily corroded. The heat and moisture in the humus first break down the PLA polymer into shorter polymer chains and eventually into lactic acid. The humus and soil microbes then consume th...

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Abstract

The invention discloses a biological degradable film, enhancement type biological degradable fabrics and a laminate material, and the enhancement type biological degradable fabrics and the laminate material are made of the laminated biological degradable film. The biological degradable film mainly comprises polybutylene adipate terephthalate (PBAT) or poly butylenes succinate (PBS) or a mixture of PBAT and PBS, and polylactic acid (PLA) and other degradable macromolecular polymers such as PBSA, PCL, PCL-BS and PHA, and accordingly the PLA, and a novel mixture of PLA and polyhydrooxyalkonates (PHAs), or a mixture of PLA, PBAT and PBS, or a mixture of PLA, PHAs, PBAT and PBS or other degradable macromolecular polymers are made. The enhancement type biological degradable fabrics and the laminate material have strong biological degradable performances in the environment containing microorganisms and can have good quality guarantee period, strength, flexibility and toughness.

Description

technical field [0001] The present invention relates to fabrics and laminates made of biodegradable films and knitted, woven or nonwoven fabrics, wherein the knitted, woven or nonwoven fabrics are preferably but not limited to biodegradable. Background technique [0002] Over the past 20 years, polylactic acid (PLA) has become a dominant biodegradable / degradable polymer used to make plastics and fibers. Because although polylactic acid is derived from natural renewable materials, it is thermoplastic and can be melt-extruded to produce plastic articles, fibers or fabrics that have good mechanical strength and flexibility comparable to petroleum-based synthetics , such as polyolefins (polyethylene and polypropylene) and polyesters (polyethylene terephthalate and polyethylene terephthalate). PLA is made from lactic acid, a by-product obtained from the fermentation of corn (such as Zea mays), wheat (such as Triticum spp.), rice (such as Oryza sativa) or sugar beet (such as Beta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04D04H5/02D04H5/06B32B27/06B32B27/36B32B27/18B32B27/12
Inventor 黃祖基华莱利
Owner U S PACIFIC NONWOVENS IND
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