Method and formulation for renewable polyethylene foams

A foam, polyolefin technology, used in the field of foam, foam, can solve problems such as reducing physical and mechanical properties
CN110869425AInactive Publication Date: 2020-03-06SEALED AIR SAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SEALED AIR SAS
Publication Date
2020-03-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method of making a foam using a renewable resource and a foam thereof is disclosed. The foam is made using green polyethylene polymers made from renewable sugarcane ethanol. The use of these polymers to make foam has the potential to reduce carbon dioxide gas emissions by more than half. The foam can be used in a variety of applications and can also be made with blends of renewable LDPE and non-renewable LDPE.
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Description

[0001] manual

[0002] Background of the invention

[0003] The present invention belongs to the technical field of foam. More specifically, the invention belongs to the technical field of foams produced from renewable materials.

[0004] Conventional foams are prepared from polyolefins, and the polyolefins are usually petroleum-based polyolefins. With changing global trends in the face of the foam industry, due to environmental concerns over greenhouse gas emissions and high dependence on increasingly scarce petroleum-based resources, the focus is on strong sustainability strategies used to generate better lifestyles improvement. Starch and PLA foams have been developed as renewable foams. However, it has been shown that increasing the starch level in starch-based foams reduces physical and mechanical properties such as density, expansion ratio, compressibility, flexibility and elasticity. PLA has a relatively low glass transition temperature (approximately 111-145°F), whi...

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
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