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Production method for polyurethane superfine fiber synthetic leather composite filtering material

A technology of ultra-fine fiber and composite filtration, which is applied in the direction of layered products, textiles and papermaking, etc. It can solve the problems of non-woven fabrics with large gaps, no production process, and unsatisfactory gas adsorption and release effects, and achieve adhesive saving , Contribute to environmental protection, the effect of tight adhesion

Active Publication Date: 2016-01-27
慈溪市晋工电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gaps in the non-woven fabric are still relatively large, and the effect of adsorption and release of gas is not ideal; moreover, the three-layer structure of the utility model needs to be pasted by heating with an adhesive, and the patent does not provide a specific production process

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A layer of polyurethane foam material with a thickness of 20mm and a layer of polyurethane microfiber synthetic leather base cloth with a thickness of 1.0mm are spread out and stacked, and placed in a flat hot press that can be heated up and down;

[0014] The density of described polyurethane foam material is 23kg / m 3 The commercially available product; The polyurethane microfiber synthetic leather base cloth is produced by Shanghai Huafeng Microfiber Material Co., Ltd., with a nylon content of 52% and a polyurethane content of 48%;

[0015] Heat the flat hot press to a temperature of 220° C., and press under a pressure of 0.25 MPa for 4 minutes to obtain the polyurethane superfine fiber synthetic leather composite filter material.

Embodiment 2

[0017] A layer of polyurethane foam material with a thickness of 15mm, a layer of polyurethane microfiber synthetic leather base cloth with a thickness of 0.9mm and a layer of polyurethane foam material with a thickness of 12mm are laid out in order and stacked, and can be heated up and down. In the flat heat press;

[0018] The density of described polyurethane foam material is 25kg / m 3 The commercially available product; The polyurethane microfiber synthetic leather base cloth is produced by Shanghai Huafeng Microfiber Material Co., Ltd., with a nylon content of 52% and a polyurethane content of 48%;

[0019] Heat the flat hot press to a temperature of 250° C., and press under a pressure of 0.35 MPa for 1 min to obtain the polyurethane superfine fiber synthetic leather composite filter material.

Embodiment 3

[0021] A layer of polyurethane foam material with a thickness of 14mm, a layer of polyurethane microfiber synthetic leather base cloth with a thickness of 0.7mm and a layer of polyurethane foam material with a thickness of 14mm are laid out in order and stacked, and can be heated up and down. In the flat heat press;

[0022] The density of described polyurethane foam material is 20kg / m 3 The commercially available product, the polyurethane microfiber synthetic leather base cloth is produced by Shanghai Huafeng Microfiber Material Co., Ltd., with a nylon content of 47% and a polyurethane content of 53%;

[0023] Heat the flat hot press to a temperature of 230° C., and press under a pressure of 0.20 MPa for 2 minutes to obtain the polyurethane superfine fiber synthetic leather composite filter material.

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Abstract

The invention discloses a production method for a polyurethane superfine fiber synthetic leather composite filtering material. The production method comprises the following steps: a polyurethane foamed material and polyurethane superfine fiber synthetic leather base cloth are spread out and stacked, or a polyurethane foamed material, polyurethane superfine fiber synthetic leather base cloth and a polyurethane foamed material are spread out and stacked in order, and the above composition is placed in a flat hot press. Hot pressing is carried out for 1-5min at a temperature of 180-250 DEG C and under a pressure of 0.15-0.35MPa, and a polyurethane superfine fiber synthetic leather composite filtering material can be obtained. The composite filtering material can release absorbed gas molecules slowly and stably, and thus flame of a gas ignition tool can burn stably. In addition, the synthetic leather base cloth and the polyurethane foamed material contain polyurethane resin components, in the hot pressing process, part of polyurethane resin is fused and softened at a high temperature, and therefore tight pasting between a layer and a layer is achieved, which can save a lot of adhesives, and is helpful for environment protection.

Description

technical field [0001] The invention relates to a production method of a polyurethane superfine fiber synthetic leather composite filter material, in particular to a production method of a polyurethane superfine fiber synthetic leather composite filter material for filtering fuel in gas ignition tools. Background technique [0002] The filter gasket in the gas lighter generally uses a multi-layer sponge that has been heated and pasted together, but the sponge has relatively large pores and a large number, the adsorption capacity of the fuel gas is not strong, and the released gas is unstable, resulting in the flame of the gas lighter. It is easy to extinguish and cannot be used continuously and stably for a long time. [0003] Also someone adopts non-woven fabric sponge pad, for example Chinese utility model patent (ZL201320592156.4) adopts upper and lower surfaces to be the pad that sponge middle layer is non-woven fabric. However, the gaps of the non-woven fabric are stil...

Claims

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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Application Information

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IPC IPC(8): D06N3/14B32B5/24B32B5/18
Inventor 张国洪赵鸿凯宋立新潘利军蒋巍
Owner 慈溪市晋工电子有限公司
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