HEMP TWISTED COMPOSITE TUBE

WIPO Patent Application WO/2017/012214

A1

A hemp twisted composite tube, comprising successively, in its radial direction from interior to exterior an inner liner (1), enhancement layers (2, 3) and an outer protective layer (4), wherein the enhancement layers (2, 3) are numb cortex layers formed by connecting hemp skins into a continuous hemp skin belt and twisting same on the inner liner. In order to further increase the intensity and the rigidity of the resulting tube, an auxiliary enhancement layer (5) is also included between the enhancement layers (2, 3), and the auxiliary enhancement layer (5) is a mastic layer formed by mixing a resin and a filler. The tube relates to the industry pipeline field, is environmentally friendly, and has renewable resources; the resulting tube has a light weight, and is simple to transport and install, can be used for replacing the current industry pipelines which consume petroleum resources and is not environmentally friendly, so as to have the function of saving the petroleum resources and reducing environmental pollution.

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JP5404749	Manufacturing method of fireproof double layer tube

YE LING (CN)
NIU LIN (CN)

PCT/CN2015/092317

January 26, 2017

October 20, 2015

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ZHEJIANG XINZHOU BAMBOO-BASED COMPOSITES TECH CO LTD (CN)
YE LING (CN)

F16L9/14

CN104089105A	2014-10-08
CN203604828U	2014-05-21
CN101571213A	2009-11-04
CN101532592A	2009-09-16
CN201434160Y	2010-03-31
CN101947803A	2011-01-19
CN202327397U	2012-07-11
CN204493928U	2015-07-22
CN2630606Y	2004-08-04

WUHAN DONGYU PATENT AGENCY (CN)

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