Bulking recovering method of non-woven fabric

A recovery method, non-woven technology, applied in non-woven fabrics, textiles, papermaking, apparel, etc., can solve problems such as reduced bulkiness

Inactive Publication Date: 2004-05-19
KAO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of this method is to eliminate the defect that the bulkiness decreases when the low-temperature gas is injected during the manufacture of non-woven fabrics, and it is still not directly related to the decrease in bulkiness caused by the winding pressure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Bulking recovering method of non-woven fabric
  • Bulking recovering method of non-woven fabric
  • Bulking recovering method of non-woven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7 and comparative example 1～4

[0080] The nonwoven fabric A and the nonwoven fabric B wound into rolls were sent out at the speed shown in Table 1, and hot air was blown on the nonwoven fabric under the conditions shown in the same table. For Examples 1-5 and Comparative Examples 1-2 Figure 4 (without cooling zone C) plant implementation. Embodiments 6 and 7 blow hot air in a desktop constant temperature dryer, and the hot air passes through (air-ventilated) non-woven fabrics. In Comparative Examples 3 and 4, hot air was blown with a hair dryer, but the hot air was not passed through. Examples 1-7 and Comparative Examples 1-4 performed natural cooling after blowing hot air. The thickness of the nonwoven fabric before and after blowing was measured by the following method. The results are shown in Table 1 below. Then, the raw fabric rolls of the nonwoven fabric A and the nonwoven fabric B wound into rolls were stored at room temperature (about 23° C.) for 2 months or more. The basis weight of the non-wo...

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Abstract

A method for restoring bulkiness of nonwoven fabric which contains crimped thermoplastic fiber and is in a roll form is disclosed. The method comprises unwinding the nonwoven fabric from the stock roll, and blowing hot air to the unwound nonwoven fabric by a through-air technique to make the nonwoven fabric increase in bulkiness. The hot air is heated at a temperature lower than the melting point of the thermoplastic fiber and not lower than a temperature lower than that melting point by about 50 DEG C., and is blown for about 0.05 to 3 seconds.

Description

technical field [0001] The present invention relates to a bulkiness recovery method of a nonwoven fabric whose bulkiness is reduced by winding pressure. This invention also relates to the manufacturing method of the absorbent article which has the nonwoven fabric which restored the bulkiness manufactured by the said method. Background technique [0002] In the manufacture of nonwoven fabrics, nonwoven fabrics manufactured according to a predetermined method are often wound up into rolls and stored before being conveyed to other processes. Then, the nonwoven fabric is sent out from the roll in another process and used as a raw material for the intended product. Since a huge winding pressure is applied to the nonwoven fabric in the winding state, there is a defect in that the bulkiness thereof decreases due to the winding pressure. This defect is more obvious when the bulkiness of the nonwoven fabric is higher. [0003] However, there is known a non-woven fabric whose bulki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F13/15D04H1/54
CPCA61F13/15707D04H1/54A61F13/15699
Inventor 宫本孝信坂涉小森康浩浅野浩司金田学
Owner KAO CORP
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