CN102605638A - Grained synthetic leather and manufacturing method thereof - Google Patents

Abstract

The invention relates to grained synthetic leather and a manufacturing method thereof. The grained synthetic leather comprises a base fabric layer, wherein a water-soluble PU (poly urethane) foaming layer is coated on the base fabric layer, and graining is directly carried out on the water-soluble PU foaming layer to form a grained layer. The manufacturing method of the grained synthetic leather comprises the steps of preparing a sizing agent and feeding the sizing agent into a foaming machine, determining size of a required pore by adjusting proportion of the sizing agent and air inflow, then feeding a base fabric into the foaming machine, heating, ironing, loading and conveying into a drying oven to complete beth processing, soaking and pressing the obtained synthetic leather, placing the product into a graining bin, and rubbing, thus the grained synthetic leather is obtained. The grained synthetic leather manufactured by the manufacturing method provided by the invention has good air permeability, high extraction resistance, no yellowing, ultraviolet irradiation resistance, no ageing, no mouldiness, flame retardance meeting the international advanced standard, hydrolysis resistance, cold winding resistance and high abrasion resistance, a manufacturing process is simple and clear, energy is greatly saved, and consumption is greatly reduced.

Description

Rub line synthetic leather and manufacturing approach thereof

Technical field

The present invention relates to a kind of synthetic leather and manufacturing approach thereof, be specifically related to a kind of line synthetic leather and manufacturing approach thereof of rubbing.

Background technology

At present, the synthetic leather product becomes following fashion trend gradually, and synthetic leather has been widely used in products such as producing case and bag, clothes, footwear, car interior trim.In the manufacture process of known artificial synthetic leather no matter the manufacturing of base material or musculus cutaneus all used a large amount of solvents; It can cause serious environmental to pollute; Use like the wet type synthetic leather and to contain dimethyl formamide (being called for short DMF) in the solvent, can cause poisoning, for by the poison control centre of tubulation via skin absorbs or by the lung suction; According to stipulating that factory must be provided with the equipment of gas collection and utilization washing and exhaust-gas treatment; Factory and government also must monitor and write down its processing procedure at any time, so its waste water and treatment of waste gas quite waste time and energy, careless slightlyly will cause serious pollution effect.

The manufacture process of the synthetic leather of another kind of dry type is to utilize resin-coated method; The butanone of its use (being called for short MEK) can cause the acute toxic hepatitis of human body; And xylene has highly combustibility; Can be lighted by heat, spark, flame easily, very easily produce fire, all can pollute air, water.

Summary of the invention

Goal of the invention: the objective of the invention is in order to overcome deficiency of the prior art, provide that a kind of good permeability, anti-extractable are good, xanthochromia, UV resistant illumination are aging, manufacturing technique is simple and clear, energy-saving and cost-reducing line synthetic leather and the manufacturing approach of rubbing.

Technical scheme: the line synthetic leather of rubbing of the present invention, comprise base cloth layer, on said base cloth layer, apply the aqueous PU foam layer, and on said aqueous PU foam layer, directly rub line formation and rub lamina.

Said aqueous PU foam layer is to be laid on the said base cloth layer through cylinder.

Manufacturing approach of rubbing the line synthetic leather of the present invention,

(1) choosing raw material by weight ratio is: 100 parts of water-based PU resins, water 1-20 part, fiber powder 1-8 part;

(2) together, normal temperature and pressure stirred 10-50 minute down, joined slurry and accomplished with said raw materials mix;

(3) the said slurry of joining is dropped into frothing machine, adjust the said inlet amount of slurry and the air inflow of frothing machine of joining, according to volume ratio 1: 1-1: 3, obtain the size of required abscess;

(4) drop into said base cloth layer, this base cloth layer of heating is to 60-100 ℃, and the deep layer material loading is passed through on this base cloth layer surface of plating then again, gets into baking oven at last;

(5) said oven temperature is controlled at 80-130 ℃, speed is decided according to required product thickness, be controlled at 3-12 rice/minute;

(6) the outlet synthetic leather is soaked press dry, pressure is 5KG, then with product put into 50-80 ℃ rub the line storehouse, rub dried.

Beneficial effect the present invention compared with prior art; Its remarkable advantage is: rub line synthetic leather good permeability, anti-extractable good, not xanthochromia, UV resistant illumination do not wear out, do not go mouldy, fire-retardant reach international advanced standard, hydrolysis, cold-resistant tortuous, ABRASION RESISTANCE is high, manufacturing technique is simple and clear, obviously energy-saving and cost-reducing.

Specific embodiment

Embodiment 1: rub the line synthetic leather, comprise base cloth layer, on said base cloth layer, apply the aqueous PU foam layer, and on said aqueous PU foam layer, directly rub line formation and rub lamina; Said aqueous PU foam layer is to be laid on the said base cloth layer through cylinder; Said manufacturing approach of rubbing the line synthetic leather, 100 parts of water intaking property PU resins, 1 part in water, 1 part in fiber powder, normal temperature and pressure stirred 10 minutes down, need not to vacuumize, and joined slurry this moment and accomplished; The said slurry of joining is dropped into frothing machine, adjust the said inlet amount of slurry and the air inflow of frothing machine of joining,, obtain the size of required abscess according to volume ratio 1: 1; Drop into said base cloth layer, this base cloth layer to 80 ℃ of heating, the deep layer material loading is passed through on this base cloth layer surface of plating then again, gets into baking oven at last; Said oven temperature is controlled at 100 ℃, and speed is decided according to product thickness, is controlled at 12 meters/minute, the product outlet, the outlet synthetic leather is soaked press dry at last, pressure is 5KG, then with product put into 70 ℃ rub the line storehouse, rub dried.

Embodiment 2: rub the line synthetic leather, comprise base cloth layer, on said base cloth layer, apply the aqueous PU foam layer, and on said aqueous PU foam layer, directly rub line formation and rub lamina; Said aqueous PU foam layer is to be laid on the said base cloth layer through cylinder; Said manufacturing approach of rubbing the line synthetic leather, 100 parts of water intaking property PU resins, 20 parts in water, 8 parts in fiber powder, normal temperature and pressure stirred 15 minutes down, need not to vacuumize, and joined slurry this moment and accomplished; The said slurry of joining is dropped into frothing machine, adjust the said inlet amount of slurry and the air inflow of frothing machine of joining,, obtain the size of required abscess according to volume ratio 1: 3; Drop into said base cloth layer, this base cloth layer to 80 ℃ of heating, the deep layer material loading is passed through on this base cloth layer surface of plating then again, gets into baking oven at last; Said oven temperature is controlled at 100 ℃, and speed is decided according to product thickness, is controlled at 3 meters/minute, the product outlet; At last the outlet synthetic leather being soaked press dry, and pressure is 5KG, then with product put into 70 ℃ rub the line storehouse, rub dried.

Claims (3)

1. rub the line synthetic leather, comprise base cloth layer, it is characterized in that: on said base cloth layer, apply the aqueous PU foam layer, and on said aqueous PU foam layer, directly rub line formation and rub lamina.

2. the line synthetic leather of rubbing according to claim 1 is characterized in that: said aqueous PU foam layer is to be laid on the said base cloth layer through cylinder.

3. manufacturing approach of rubbing the line synthetic leather according to claim 1 is characterized in that:

(1) choosing raw material by weight ratio is: 100 parts of water-based PU resins, water 1-20 part, fiber powder 1-8 part;

(2) together, normal temperature and pressure stirred 10-50 minute down, joined slurry and accomplished with said raw materials mix;

(3) the said slurry of joining is dropped into frothing machine, adjust the said inlet amount of slurry and the air inflow of frothing machine of joining, according to volume ratio 1: 1-1: 3, obtain the size of required abscess;

(4) drop into said base cloth layer, this base cloth layer of heating is to 60-100 ℃, and the deep layer material loading is passed through on this base cloth layer surface of plating then again, gets into baking oven at last;

(5) said oven temperature is controlled at 80-130 ℃, speed is decided according to required product thickness, be controlled at 3-12 rice/minute;

(6) the outlet synthetic leather is soaked press dry, pressure is 5KG, then with product put into 50-80 ℃ rub the line storehouse, rub dried.