Title:
HEAT-SHRINKABLE TUBE HAVING TEARABLE PROPERTIES
Document Type and Number:
WIPO Patent Application WO/2020/158854
Kind Code:
A1
Abstract:
The present invention provides a tube which is rarely broken and is stable during the process of the production of a heat-shrinkable tube having easy-to-tear properties in a length direction. The tube is characterized by comprising at least a melt-processable fluororesin and having such a property that, when the strain of the tube is defined as ε, the stress at the strain is defined as σ (MPa) and the strain ε is put on the horizontal axis and the stress σ is put on the longitudinal axis on a coordinate graph, each of a straight line ab and a straight line cd which are defined by four coordinate points a (0.4,8.8), b(0.4,2.4), c(1.0,9.9) and d(1.0,3.2) on the graph insects with a mechanical property curve of the tube which is obtained by carrying out a tensile test under the conditions of an atmospheric temperature of 60°C, an initial chuck-to-chuck distance of 22 ± 0.05 mm and a tension speed of 5 mm/sec.
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Inventors:
SUZUKI MASAHIRO (JP)
KIMURA YASUYUKI (JP)
KIMURA YASUYUKI (JP)
Application Number:
PCT/JP2020/003402
Publication Date:
August 06, 2020
Filing Date:
January 30, 2020
Export Citation:
Assignee:
JUNKOSHA INC (JP)
International Classes:
B29C61/08; F16L11/06; F16L11/12; B29K27/12; B29K105/02; B29L23/00
Domestic Patent References:
| WO2013077452A1 | 2013-05-30 |
Foreign References:
| JPH08216252A | 1996-08-27 | |||
| JPH02258324A | 1990-10-19 | |||
| JP2014136756A | 2014-07-28 | |||
| JP2010253729A | 2010-11-11 | |||
| JP2016169856A | 2016-09-23 | |||
| US20150354732A1 | 2015-12-10 |
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