resin tube

JP7833360B2Active Publication Date: 2026-03-19KANEKA CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2022-07-08
Publication Date
2026-03-19

AI Technical Summary

Technical Problem

Conventional resin tubes formed from poly(3-hydroxyalkanoate) resins undergo significant heat shrinkage during secondary processing, leading to dimensional changes and inability to achieve the desired shape.

Method used

A resin tube containing a blend of at least two types of poly(3-hydroxyalkanoate) resins with different monomer compositions and incorporating a plasticizer, which reduces the heat shrinkage rate to 6% or less, allowing successful secondary processing involving heating.

Benefits of technology

The resin tube exhibits suppressed heat shrinkage, enabling successful secondary processing and maintaining the desired shape during heating, while maintaining impact resistance and flexibility.

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Abstract

To provide a resin tube that comprises a poly(3-hydroxyalkanoate) resin component and exhibits reduced shrinkage due to heating.SOLUTION: A resin tube comprises a poly(3-hydroxyalkanoate) resin component. The poly(3-hydroxyalkanoate) resin component comprises at least two kinds of poly(3-hydroxyalkanoate) resins that differ from each other in a type and / or a content of their constituent monomers. The resin tube further comprises a plasticizer. When measured at 160°C for 10 minutes, the resin tube shows thermal shrinkage of 6% or less.SELECTED DRAWING: None
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Citation Information

Patent Citations

  • Poly(3-hydroxybutyrate) resin tube and method for producing the same

    JP2021091866A

  • Biodegradable resin composition and molded body thereof

    WO2008018567A1

  • Poly(3-hydroxybutyrate)-based resin tube and method for producing same

    WO2020040093A1

  • Resin tube

    WO2022009717A1

  • Resin film, and bag, glove, and bundling material each formed from said resin film

    WO2022044836A1