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Telescopic composite sheet and its manufacture

A manufacturing method and composite sheet technology, applied in the field of composite sheets, can solve the problems of difficult inelastic fiber layer, increase in diameter of polypropylene fibers, etc.

Inactive Publication Date: 2004-03-17
UNI CHARM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the spinning process, if the polypropylene fiber is stretched excessively, the crystallization does not proceed, and the non-elastic fiber layer and the rubber elastic layer formed of such polypropylene can be stretched to a higher elongation, and the obtained The limit of elastic elongation of the layer elastic sheet increases, but the diameter of the polypropylene fiber tends to increase, making it difficult to obtain a rejoicing non-elastic fiber layer

Method used

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  • Telescopic composite sheet and its manufacture
  • Telescopic composite sheet and its manufacture
  • Telescopic composite sheet and its manufacture

Examples

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Embodiment Construction

[0027] Referring to the accompanying drawings, the manufacturing method of the elastic and stretchable composite sheet of the present invention will be specifically described.

[0028] The elastic stretchable composite sheet 1 shown in the perspective view of FIG. 1 includes a top layer 2 and a bottom layer 3, and these two layers 2, 3 are welded by a joint 4 to form a whole. The composite layer 1 can elastically expand and contract in the manner shown by phantom lines along the mutually perpendicular double-headed arrows X-X and Y-Y, at least in the direction of the arrow Y-Y.

[0029] The top layer 2 in the above-mentioned composite layer 1 is a layer that can be non-elastically stretched in at least the Y-Y direction among the X-X and Y-Y directions. The top layer 2 is an aggregate of continuous fibers 6 of thermoplastic synthetic resin, preferably only at the joints 4 where the fibers 6 are welded to each other, and the joints 4 are not joined. The continuous fiber 6 is b...

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PUM

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Abstract

A sheet-like fibrous assembly 2 having an inelastic stretchability is intermittently joined to at least one surface of an elastically stretchable sheet 3. The elastic sheet 3 is elastically stretchable at least 80 % in one direction and the fibrous assembly 2 is curved between each pair of binding spots 4 adjacent to each other on the elastic sheet 3 so as to be stretchable in the one direction and comprises ethylene / propylene copolymer, ethylene / propylene / butene copolymer or a mixture of two or more of these copolymers at 100 - 10 % by weight.

Description

technical field [0001] The present invention relates to a composite sheet having elastic stretchability, and more specifically, to the above-mentioned sheet formed of an elastic sheet and a non-elastic sheet-like fiber assembly. Background technique [0002] JP Kokai No. Hei 8-504963 discloses a multi-layered elastic board formed of at least one rubber elastic layer and at least one non-elastic fiber layer, and a method for producing the same. In the panel, the inelastic fibrous layer is joined to the rubber elastic layer by spaced apart joints, between which a fold is formed. The elastic fiber layer in the panel was once tensioned close to the failure elongation limit. In addition, in the manufacturing method of the panel, on the rubber elastic layer in a relaxed state, an inelastic fiber layer formed of an untensioned or partially tensioned material is superimposed, and then, the two are bonded together through a spaced joint. Layers are fused or bonded. Thereafter, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F13/511A61F5/44A61F13/00A61F13/49B32B5/04B32B5/24B32B5/26B32B7/022B32B7/14B32B27/32D04H1/559D04H13/00
CPCD04H13/007B32B7/14B32B5/24B32B27/32B32B5/04D04H1/4291D04H1/544D04H1/559Y10T428/249924Y10T442/601Y10T442/659Y10T442/674Y10T442/602B32B7/022A61F13/00B32B5/022B32B5/024B32B27/12B32B2038/0028B32B2262/0253B32B5/26
Inventor 小林利夫大幡裕之
Owner UNI CHARM CORP
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