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Bulk thin sheet material with 3-D embossment

一种膨松、薄片的技术，应用在织物、纺织、纺织品和造纸等方向，能够解决易起绒毛、凸起易陷缩等问题

Inactive Publication Date: 2003-09-10
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, bumps collapse easily and fluff easily

Method used

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  • Bulk thin sheet material with 3-D embossment
  • Bulk thin sheet material with 3-D embossment
  • Bulk thin sheet material with 3-D embossment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0067] Embodiment 11) Preparation of the first fiber layer forming material

[0068] The self-curling fiber (it is a heat-shrinkable sheath-core composite fiber composed of a polypropylene (PP) core and an ethylene-propylene copolymer (EP) sleeve, with a core / sheath weight ratio of 5 / 5, has a fineness 2.2 dtex, fiber length 51 mm and shrinkage initiation temperature Ts of 90° C., (CPP, available from Daiwabo Co., Ltd.)) were carded with a roller carding machine to form a fiber having a basis weight of 12 g / m 2 fiber web. 2) Preparation of second fiber layer forming material

[0069] The thermally bondable sheath-core composite fiber (which consists of a polyethylene terephthalate (PET) core and a polyethylene fiber (PE) sheath with a core / sheath weight ratio of 5 / 5 and fineness 2.2dtex, fiber length 51mm (NBF-SH, can obtain from Daiwabo Co., Ltd.)) carding with roller carding machine, form and have basis weight 13g / m 2 fiber web. 3) Preparation of bulk...

Embodiment 2

[0073] A bulky sheet material was prepared in the same manner as in Example 1, except that the set temperatures of the embossing rolls and smooth rolls were changed to the temperatures shown in Table 1 below. The resulting lofty sheet material has a large number of protrusions formed by the second fibrous layer which arches between connection points due to contraction of the first fiber layer, and connection points which form depressions.

Embodiment 3

[0075] The same method as in Example 1 was used to obtain a bulky sheet material, except that (i) the setting temperature of the embossing roller and smooth roll was changed to the temperature shown in Table 1 and (ii) the embossing roller was placed in the depression There is no insulation, but instead (iii) both webs are wrapped at a wrap angle of 60° on a smooth roll to apply tension on the CD. The resulting lofty sheet material has a large number of protrusions formed by the second fibrous layer which arches between connection points due to contraction of the first fiber layer, and connection points which form depressions.

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Abstract

A bulky sheet material having three-dimensional protrusions comprises a first fiber layer and a second fiber layer provided on at least one side of the first fiber layer. The first fiber layer contains thermally shrunken heat-shrinkable fibers. The second fiber layer comprises heat non-shrinkable fibers. The first fiber layer and the second fiber layer are partly joined together at a large number of joints formed by fusion bonding. The joints are formed by melting and solidification of a heat fusible resin having a higher melting point than the shrinkage starting temperature of the heat shrinkable fiber. The second fiber layer forms a large number of protrusions between the joints by the heat shrinkage of the first fiber layer while leaving the joints as depressions.

Description

technical field [0001] The present invention relates to a bulky sheet material comprising a nonwoven fabric having a plurality of protrusions. Background technique [0002] Japanese Patent 3,131,557 discloses a creped nonwoven fabric comprising a first fibrous layer comprising heat-shrinkable fibers and a heat-bondable fiber, and a second fibrous layer, the heat-bondable The melting point of the fibers is lower than the shrinkage initiation temperature of the heat-shrinkable fibers, the second fiber layer comprises heat-non-shrinkable fibers stacked on one side of the first fiber layer, and the first and second fiber layers are bonded in a stripe pattern by thermal fusion connect. The fused joints are concave, and the second fiber layer forms a large number of ribbon-like corrugations (reliefs) between the fused joints. By superimposing the first fiber layer and the second fiber layer, the two layers are connected by fusion bonding at a temperature lower...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/26D04H1/06D04H1/559D04H13/00
CPCD04H13/007D04H1/54D04H1/541D04H1/06D04H1/559Y10T442/674D04H1/5412D04H1/5418D04H1/5414
Inventor 坂涉种市祥一宫本孝信
Owner KAO CORP
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