Junkosha Inc.

Tomoyo Okubo

Masahiro Suzuki

Kohei Yuri

Provided is a heat-shrinkable tube having tearability, which is made of a fluororesin, particularly, a tube having excellent tear straightness and high heat-shrinkability at low temperature. The tube is a heat-shrinkable tube having tearability, which includes, as a base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, and as a resin other than the base resin, a copolymer including at least tetrafluoroethylene and hexafluoropropylene as constituent monomers, in which a thickness of an entanglement unit of a polymer observed at a cross-section in a longitudinal direction of the tube is 9 &#x3bc;m or less, and has excellent tear straightness and high heat-shrinkability.

Heat-shrinkable tube having tearability

The present disclosure relates to a heat-shrinkable tube having tearability, which is made of a fluororesin, and particularly, to a heat-shrinkable tube having excellent tear straightness. Further, the present disclosure relates to a tube having high heat-shrinkage rate at low temperature. A tube including at least a fluororesin as a base resin, in which the thickness of the entanglement unit of a polymer observed on a cross-section in a longitudinal direction of the tube after being shrunk at 200&#xb0; C. by 35% or more is 1 &#x3bc;m to 9 &#x3bc;m, has excellent tear straightness.

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Kasama, Japan

Tomoyo Okubo