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A kind of preparation method of artificial leather base cloth of segmental orange type superfine fiber

A superfine fiber, imitation leather technology, applied in the direction of improved hand-feeling fibers, non-woven fabrics, textiles and papermaking, can solve the problems of increased production cost, environmental pollution, poor uniformity, etc., and achieves dense surface, smooth appearance, and hand feel soft effect

Active Publication Date: 2017-08-15
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ironing and melting of non-woven fabrics requires high energy, and the uniformity of infiltration into non-woven fabrics after melting is poor, and toluene reduction or alkali reduction processes will produce a large amount of organic wastewater, which not only causes certain Environmental pollution also increases production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The invention discloses a preparation method of a pie-shaped superfine fiber imitation leather base cloth, which is characterized in that it comprises the following steps:

[0020] (1) The composite fiber is spun into a web: firstly, the two kinds of polymer slices are respectively introduced into the drying tower for pre-crystallization and drying treatment, extruded and melted by a screw extruder, filtered by a melt filter, and then entered into a spinning box; then Using segmented orange spinning components, it is drawn and spun into a web on a two-component spunbond equipment;

[0021] The drafting method is at least one of tubular drafting, wide slit drafting or narrow slit drafting; the drafting wind pressure is 0.1-0.8Mpa, and the drafting wind speed is 0-2m / s, the drawing speed is 1000-6000m / min, the temperature is 10-25℃, and the relative humidity is 65-90%;

[0022] The interfacial adhesion and compatibility between the two kinds of polymer slices in step 1)...

Embodiment 1

[0030] Firstly, PET / PA6 (the mass ratio of PET / PA6 is 70:30) are respectively introduced into the drying tower for pre-crystallization and drying treatment, extruded and melted by a screw extruder, filtered by a melt filter and then entered into a spinning box; then The orange petal spinning component is formed into a web by tubular drawing and spinning on a two-component spunbonding equipment; the drafting wind pressure is 0.5Mpa, the drafting wind speed is 1m / s, the drafting speed is 3000m / min, and the temperature is 20°C, relative humidity is 78%; the fiber web is sent into the needling machine in turn (needling depth is 7mm, needling density is 250N / cm 2 , the thickness after acupuncture is 0.5μm, the fiber opening rate is 30%), the hydroentanglement machine (single-sided spunlace, the water needle pressure is 150Mpa, the depth of water needle penetration into the nonwoven fabric is 0.2um, the fiber opening rate 60%) is reinforced to obtain a non-woven fabric (thickness is...

Embodiment 2

[0032]Firstly, PET / PA6 (the mass ratio of PET / PA6 is 70:30) are respectively introduced into the drying tower for pre-crystallization and drying treatment, extruded and melted by a screw extruder, filtered by a melt filter and then entered into a spinning box; then The orange petal spinning component is spun into a web by wide slit drawing on a two-component spunbond equipment; the drafting wind pressure is 0.5Mpa, the drafting wind speed is 1m / s, and the drafting speed is 3000m / min , the temperature is 20°C, and the relative humidity is 78%; the fiber web is sent into the acupuncture machine in turn (needle depth 5mm, needle density 150N / cm 2 , the thickness after acupuncture is 0.6μm, the fiber opening rate is 20%), the spunlace machine (single-sided spunlace, the water needle pressure is 280Mpa, the depth of water needle penetration into the nonwoven fabric is 0.3um, the fiber opening rate 80%) is reinforced to obtain a non-woven fabric (thickness is 0.45 μm, grammage is 12...

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Abstract

The invention discloses an orange petal type superfine fiber simulation leather base cloth preparation method which is characterized by comprising the following steps: 1, utilizing a spunbond method to prepare orange petal type compound filament fiber and laying a web on a web forming apron; 2, sequentially sending a fiber web into a needle machine and a spunlacing machine for reinforcing, so as to obtain nonwoven cloth, wherein the fiber fineness on the cross section of the nonwoven cloth has gradient change; 3, dissolving soluble resin and smearing on the needled surface of the nonwoven cloth to obtain nonwoven cloth, wherein the resin content of the cross section of the nonwoven cloth has gradient change; 4, impregnating, curing, boiling and drying the nonwoven cloth to obtain the orange petal type superfine fiber simulation leather base cloth. The orange petal type superfine fiber simulation leather base cloth produced through the preparation method has the gradient change of the fiber fineness and the (waterborne) polyurethane impregnation amount in the nonwoven cloth, is similar to a structure of a leather base plate, has good hand feel, drape effect and texture, and achieves the purpose of high-simulation leather base cloth.

Description

technical field [0001] The invention relates to the technical field of superfine fiber synthetic leather, in particular to a method for preparing a pie-shaped superfine fiber imitation leather base cloth. Background technique [0002] At present, the production and research and development of synthetic leather have always been aimed at approaching natural leather. Microfiber synthetic leather (microfiber leather), as a new generation of artificial leather, is the product closest to natural leather, but there is still a certain gap between it and natural leather. The main difference is that the natural leather substrate has obvious gradients in the cross-sectional direction. Structure, the density of the epidermis and the bottom layer has a large difference, the density of the epidermis is high, and the density of the bottom layer is low. This feature makes the surface crease fine, the hand feels full, and the toughness is strong after bending. [0003] At present, the micro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/333D06M15/507D04H3/005D04H3/105D04H3/11D06M101/20D06M101/32D06M101/34D06M101/38
CPCD04H3/005D04H3/105D04H3/11D06M15/333D06M15/507D06M2101/20D06M2101/32D06M2101/34D06M2101/38D06M2200/50D06N3/0004D06N3/0011D06N2211/28
Inventor 钱晓明赵宝宝徐志伟封严邓辉王闻宇
Owner TIANJIN POLYTECHNIC UNIV