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Manufacturing method of highly-bonded-leather superfine fiber synthesized leather

A technology of ultra-fine fibers and manufacturing methods, which is applied in chemical instruments and methods, synthetic resin layered products, textiles and papermaking, etc., and can solve the problems of no slow elasticity, low mechanical properties, strong plastic feeling, etc.

Inactive Publication Date: 2013-01-30
禾欣可乐丽超纤皮(嘉兴)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to this manufacturing process, the polyurethane layer does not have fibers as a support and skeleton, so its mechanical properties will be relatively low, and it will not have the slow elasticity of leather, so it has a strong plastic feel.

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

[0046] (1) Spinning of Type A sea-island fibers

[0047] Composite spinning of nylon 6 slices and low-density polyethylene according to the mass ratio of 70:30, control the spinning temperature at 270~285°C, ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265~270°C, after cooling Blowing (wind temperature 20°C), drafting (drawing 4.5 times), crimping (crimp number 20 / 25mm) and cutting to obtain sea-island fibers of 8D×51mm.

[0048] (2) Spinning of Type B sea-island fibers

[0049] Nylon 6 slices and low-density polyethylene are mixed and spun at a mass ratio of 45:55, and the spinning temperature is controlled at 270-285°C to ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265-270°C. After cooling Blowing (wind temperature 20°C), drafting (drawing 4.5 times), crimping (20 crimps / 25mm) and cutting to obtain sea-island fibers of 6D×51mm for use.

[0050] (3) Production of non-woven fabrics

[0051] The sea-islan...

Embodiment 2

[0067] (1) Spinning of Type A sea-island fibers

[0068] Composite spinning of nylon 6 slices and low-density polyethylene according to the mass ratio of 65:35, control the spinning temperature at 270~285°C, ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265~270°C, after cooling Blowing (wind temperature 20°C), drafting (drawing 4.2 times), crimping (crimp number 20 / 25mm) and cutting to obtain sea-island fibers of 7D×51mm.

[0069] (2) Spinning of Type B sea-island fibers

[0070] Nylon 6 slices and low-density polyethylene are mixed and spun at a mass ratio of 45:55, and the spinning temperature is controlled at 270-285°C to ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265-270°C. After cooling Blowing (wind temperature 20°C), drafting (drawing 4.2 times), curling (number of curls 23 / 25mm) and cutting to obtain sea-island fibers of 6D×51mm for use.

[0071] (3) Production of non-woven fabrics

[0072] The s...

Embodiment 3

[0088] (1) Spinning of Type A sea-island fibers

[0089] Composite spinning of nylon 6 slices and low-density polyethylene according to the mass ratio of 60:40, control the spinning temperature at 270~285°C, ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265~270°C, after cooling Air blowing (wind temperature 20°C), drafting (drawing 4.5 times), crimping (crimp number 23 / 25mm) and cutting to obtain sea-island fibers of 7D×51mm.

[0090] (2) Spinning of Type B sea-island fibers

[0091] Nylon 6 slices and low-density polyethylene are mixed and spun at a mass ratio of 45:55, and the spinning temperature is controlled at 270-285°C to ensure that the melt temperature of nylon 6 and low-density polyethylene is at 265-270°C. After cooling Blowing (wind temperature 20°C), drafting (drawing 4.2 times), crimping (20 crimps / 25mm) and cutting to obtain sea-island fibers of 6D×51mm for use.

[0092] (3) Production of non-woven fabrics

[0093] The sea-i...

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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PUM

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Abstract

The invention discloses a manufacturing method of highly-bonded-leather superfine fiber synthesized leather. The manufacturing method comprises the following steps of: spinning sea-island fibers, wherein spinning the A and B types of sea-island fibers by nylon 6 and low-density polyethylene, and the A type of sea-island fibers contain higher proportions of nylon 6 and low-density polyethylene while the B type of sea-island fibers contain lower proportions of nylon 6 and low-density polyethylene; manufacturing non-woven fabrics, wherein the two types of sea-island fibers prepared in the first step are manufactured into the non-woven fabrics by adopting a method of two-time lapping and two-time needling, and the lower-layer non-woven fabric is made of the B type of sea-island fibers while the upper-layer non-woven fabric is made of the A type of sea-island fibers; soaking the fabrics in polyurethane; curing and washing the fabrics; extracting 'sea phases' out of the fabrics; and drying and sizing the fabrics, rubbing the fabrics to be soft, grinding furs of the fabrics, and overlaying the fabrics by a dry method. The prepared superfine fiber synthesized leather has fine folding lines and slow elastic resilience similar to those of leather as having density gradient change from top to bottom similar to that of the leather, and also has mechanical properties, such as peeling load and tearing load, which are higher than those of the leather.

Description

technical field [0001] The invention belongs to the artificial leather manufacturing technology, and relates to a manufacturing method of high imitation leather superfine fiber synthetic leather. Background technique [0002] The chemical resistance, mildew resistance, strength, tearing and other physical properties of microfiber artificial leather are superior to genuine leather, and it is evaluated as "the fourth generation artificial leather" by the synthetic leather industry. But there are still some gaps between some of its apparent properties and real leather. The reasons for the analysis are mainly in three aspects: 1) The dermis has obvious density changes from top to bottom. Especially for leather with delicate creases and soft touch, the density gradient changes obviously. 2) The density layers of the dermis are connected together in a tight weaving method, and they deform together under the condition of external force, and the mechanical stress transitions natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/12B32B27/08B32B37/14B32B38/00
Inventor 张军锋胡美群徐华伟王海刚沈跃峰张建凤曹红英
Owner 禾欣可乐丽超纤皮(嘉兴)有限公司