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Flexible bimetallic tube

A double-layer pipe and double-layer technology, applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve the problem of damage to the air-tightness or liquid-tightness of the flow path, weak joint strength at the joint, and easy peeling, etc. problems, to achieve the effect of small pressure loss, excellent flexibility, and improved flat strength

Inactive Publication Date: 2006-07-05
TOTAKU IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, not to mention the lack of flexibility, in the case of a flexible tube, the joint strength of the joint is weak due to the flexibility, and the joint is easily peeled off when it is bent. Therefore, the disadvantage is that the flow path is damaged. airtight or liquidtight

Method used

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Examples

Experimental program
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Embodiment Construction

[0029] The flexible double-layer pipe according to one embodiment of the present invention is connected to, for example, a ventilation device installed in a house, and used as an intake and exhaust pipe.

[0030] In the figure, 1 is a pipe main body of a flexible double-layer pipe, and the pipe main body 1 is formed by spirally winding a resin band-shaped body 2 composed of a polyolefin-based elastic resin. In other words, the resin strip 2 is wound spirally, and the edge portions along the longitudinal direction of the leading resin strip 2 and the subsequent resin strip 2 are separated from each other by a distance between the pipe diameters. In the state where the directions are overlapped, thermal bonding or adhesive bonding is performed, whereby the pipe body 1 having a thinner and thicker pipe wall with a cross-sectional circular shape is formed. In addition, the pipe main body 1 is not limited to the case where such a resin-made strip-shaped body is wound spirally, and ...

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Abstract

To provide a flexible double-layer tube excellent in flexibility though its structure is simple, high in joining strength between a tube body inner wall surface and a partition plate, and excellent in the airtightness and liquidtightness of both flow passages. In this double-layer tube, the double flow passages 19 and 20 are formed by partitioning the inside of a tube body 1 by the partition plate 7 by joining both end parts of the soft resin partition plate 7 along the longitudinal direction of the tube to the smooth inner wall surface 8 of the soft resin tube body 1 peripherally reinforced by reinforcement materials 3 and 4 with a hot-melt adhesive agent 15.

Description

technical field [0001] The invention relates to a flexible double-layer pipe that separates the inside of the pipe by a partition to form parallel double-layer flow paths, in particular to a flexible double-layer pipe mainly used as an intake and exhaust pipe of a ventilation device. Background technique [0002] In such an intake / exhaust pipe, etc., a double-layered pipe is known in which the interior of the pipe is partitioned by a partition to form a double-layered flow path in the lengthwise direction of the pipe. In such conventionally used double-layer pipes, the pipe itself is generally not flexible. [0003] For example, in the following patent document 1, it is described that the pipe body is formed of a rigid material such as metal or hard plastic, and a soft plastic partition plate with paddle-shaped gaskets at both ends is inserted into the pipe body. . The wafer-shaped liner is adhered to the inner wall surface of the pipe body, and the connection between it a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04F16L11/22
Inventor 池上宽高岛正利丸山智士中俣庆治
Owner TOTAKU IND INC
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