Padding finishing method for polyvinyl alcohol nonwoven fabric

A technology of polyvinyl alcohol and non-woven fabrics, applied in the processing of textile materials, liquid/gas/steam textile material processing, fiber processing, etc., can solve the problems of intensified decomposition, low processing efficiency, instability, etc. Increased elongation, improved mechanical properties, and enhanced overall performance

Active Publication Date: 2018-06-29
GUANGZHOU LITE NEW MATERIAL TECH CO LT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the melting point of polyvinyl alcohol is as high as 220-230°C, and under heated conditions, polyvinyl alcohol begins to be unstable and decomposes at 180°C. As the temperature continues to rise, not only the decomposition intensifies, but also crosslinking occurs; therefore, Pure polyvinyl alcohol is not thermoplastic, that is, non-woven fabrics made of polyvinyl alcohol fibers are not thermoplastic. This is one of the biggest defects of polyvinyl alcohol non-woven fabrics, that is, they cannot be used like other commonly used plastics. The non-woven fabrics prepared by synthetic resins have excellent heat-sealing properties, so that they are subject to certain restrictions in the application field, such as the second processing of non-woven fabrics: edge sealing, sealing, bag making, etc., only traditional The stitching is not achieved by the process of automated heat-sealing processing machinery
This leads to low processing efficiency and a sharp increase in cost.

Method used

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  • Padding finishing method for polyvinyl alcohol nonwoven fabric
  • Padding finishing method for polyvinyl alcohol nonwoven fabric
  • Padding finishing method for polyvinyl alcohol nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The padding finishing of polyvinyl alcohol nonwoven fabric specifically comprises the following steps:

[0034] (1) Soaking solution for finishing, the soaking solution is calculated in parts by weight, and includes the following components:

[0035]

[0036]

[0037] The materials in the impregnating liquid are measured and heated in water to fully dissolve into a uniform aqueous solution to obtain the impregnating liquid;

[0038] (2) Specification of polyvinyl alcohol non-woven fabric for finishing: 60g / m 2 ;

[0039] (3) Padding finishing process: the polyvinyl alcohol non-woven fabric is released from the unwinding roller 1-1, enters the dipping tank 1-2 through the guide roll, and is fully impregnated in the dipping tank through the dipping guide roll 1-3, and then After being dried by the padding rolls 1-4, it enters the drying channel 1-5 for drying treatment; after drying treatment, it is wound by the finished winding rolls 1-6.

[0040] (4) Padding fi...

Embodiment 2

[0046] The padding finishing of polyvinyl alcohol nonwoven fabric specifically comprises the following steps:

[0047] (1) Soaking solution for finishing, the soaking solution is calculated in parts by weight, and includes the following components:

[0048]

[0049] The materials in the impregnating liquid are measured and heated in water to fully dissolve into a uniform aqueous solution to obtain the impregnating liquid;

[0050] (2) Specification of polyvinyl alcohol non-woven fabric for finishing: 15g / m 2 ;

[0051] (3) Padding finishing process: the polyvinyl alcohol non-woven fabric is released from the unwinding roller 1-1, enters the impregnation tank 1-2 through the guide roller, and is fully impregnated in the impregnation tank by the impregnation guide roller 1-3, and then after After the padding rolls 1-4 are dried, they enter the drying channel 1-5 for drying treatment; after the drying treatment, they are wound up by the finished winding rolls 1-6.

[0052](...

Embodiment 3

[0058] The padding finishing of polyvinyl alcohol nonwoven fabric specifically comprises the following steps:

[0059] (1) Soaking solution for finishing, the soaking solution is calculated in parts by weight, and includes the following components:

[0060]

[0061] The materials in the impregnating liquid are measured and heated in water to fully dissolve into a uniform aqueous solution to obtain the impregnating liquid;

[0062] (2) Specification of polyvinyl alcohol non-woven fabric for finishing: 20g / m 2 ;

[0063] (3) Padding finishing process: the polyvinyl alcohol non-woven fabric is released from the unwinding roller 1-1, enters the dipping tank 1-2 through the guide roll, and is fully impregnated in the dipping tank through the dipping guide roll 1-3, and then After being dried by the padding rolls 1-4, it enters the drying channel 1-5 for drying treatment; after drying treatment, it is wound by the finished winding rolls 1-6.

[0064] (4) Padding finishing proc...

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Abstract

The invention discloses a padding finishing method for polyvinyl alcohol nonwoven fabric. The method comprises steps as follows: the polyvinyl alcohol nonwoven fabric is unreeled and guided into an impregnating tank, the nonwoven fabric is sufficiently impregnated by an impregnation liquid in the impregnating tank and then is rolled to be dry, dried through a drying channel and wound, and the polyvinyl alcohol nonwoven fabric subjected to padding finishing is obtained. With adoption of the padding finishing method, the polyvinyl alcohol nonwoven fabric without heat sealing performance originally is endowed with heat sealing performance of secondary processing, and realization of processes such as automatic mechanical edge sealing, opening sealing, continuous bag making and the like is facilitated, so that processing efficiency of a product is substantially improved, and cost is reduced; meanwhile, fiber nodes in the polyvinyl alcohol nonwoven fabric are firmer, and therefore, mechanical properties of the polyvinyl alcohol nonwoven fabric are further improved; besides, elongation at break of polyvinyl alcohol is increased, and accordingly, the polyvinyl alcohol nonwoven fabric becomes softer and more comfortable.

Description

technical field [0001] The invention relates to the field of post-treatment of non-woven fabrics, in particular to a padding finishing method of polyvinyl alcohol non-woven fabrics. Background technique [0002] As an environmentally friendly material, polyvinyl alcohol (PVA) has been rapidly developed and applied in many fields in recent years. As a country with a large production capacity of vinylon, China has abundant sources of raw materials and application markets. In the pre-production process of vinylon, the polyvinyl alcohol (PVA) fiber formed by wet spinning coagulation bath is directly processed without acetal treatment. It is also used in the production of polyvinyl alcohol non-woven fabrics, which has been rapidly developed and applied in recent years. Due to the water-soluble and environmentally friendly properties of polyvinyl alcohol non-woven fabrics, it has begun to replace non-woven fabrics made of plastic synthetic resins in many fields, such as shoemakin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/53D06M15/333D06B3/12D06B15/02D06M101/24
CPCD06B3/12D06B15/02D06M15/333D06M15/53D06M2101/24D06M2200/50
Inventor 崔跃飞李少香杨军忠谢东周向阳李建雄
Owner GUANGZHOU LITE NEW MATERIAL TECH CO LT
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