MARINE HOSE - YOKOHAMA RUBBER CO LTD

Title:

MARINE HOSE

Document Type and Number:

WIPO Patent Application WO/2017/135040

Kind Code:

A1

Abstract:

Provided is a marine hose capable of balancing high oil resistance and high flexibility in the inner-surface layer that constitutes the hose body thereof. This marine hose has a layered structure obtained by layering, in the radial direction, a first rubber layer (4A) and a second rubber layer (4B) that have different properties, so as to extend in the lengthwise direction of the hose body (3) across a range (Z) of at least 100mm to the front and rear of the insertion-side end (E) of the connection fitting (2) of the inner-surface layer (4) of the marine hose (1). The rubber in the first rubber layer (4A) exhibits a breaking elongation of 700-750%, inclusive, and exhibits an expansion coefficient of more than 30% and no more than 40% after 48 hours of immersion at 40°C in each of IRM 901, 902 and 903 specified in ISO 1817 when tested according to method 2 specified by ISO 6722. The rubber in the second rubber layer (4B) exhibits a breaking elongation of 550-600%, inclusive, and exhibits an expansion coefficient of no more than 30% after 48 hours of immersion at 40°C in each of IRM 901, 902 and 903.

More Like This:

WO/2010/103036	FLEXIBLE PIPE WITH A WRAPPED REINFORCEMENT AND RELATED PRODUCTION METHOD
JPWO2017126591	Rubber composition and hose

Inventors:

ONO SHUNICHI (JP)
FUSE NORIYUKI (JP)

Application Number:

PCT/JP2017/001661

Publication Date:

August 10, 2017

Filing Date:

January 19, 2017

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YOKOHAMA RUBBER CO LTD (JP)

International Classes:

F16L11/08; F16L33/28

Domestic Patent References:

WO2014098022A1

2014-06-26

Foreign References:

JP2009052713A	2009-03-12
JP2015068499A	2015-04-13
JP2006144878A	2006-06-08
GB2031542A	1980-04-23
US4148342A	1979-04-10
JPH08505684A	1996-06-18
JP2006144878A	2006-06-08

Other References: