CN101798762A - Production method of imitated microfiber synthetic leather - Google Patents

Abstract

The invention provides a production method with low production cost of imitated microfiber synthetic leather. The physical properties of the prepared imitated microfiber synthetic leather are similar to that of microfiber synthetic leather. The method comprises the following steps: weaving warp knitting fabric by adopting 34-needle needle-arranging mode and using a staple fibre yarn count warp knitting machine; napping the warp knitting fabric, performing soaking treatment under 6-8m/min of linear velocity through a soaking trough, wherein the soaking solution in the soaking trough comprises polyurethane resin, dimethylformamide and permeability additive in a weight ratio of 100:300-350:3-5 and also comprises a defined amount of pigment, then leading the soaked warp knitting fabric to pass through a coagulating trough and a rinsing trough for curing process and rinsing process, drying and forming to prepare base fabric; using 150+/-10 meshes of sand paper to polish the back of the base fabric; and finally coating a layer of anti-yellowing additive on the front of the base fabric by using a printer.

Description

A kind of production method of imitated microfiber synthetic leather

Technical field

The present invention relates to a kind of synthetic leather production method, particularly a kind of production method of imitated microfiber synthetic leather.

Background technology

Synthetic leather (emulational leather) in the application in fields such as clothes, sport footwear, sofa and case and bag more and more widely, this has remedied the rare influence of bringing for relevant manufacturing industry of Animal Skin to a great extent, the existing production craft step that is mainly used in the PU synthetic leather of sport footwear generally comprises: produce batching-wet production-oven dry rolling-middle inspection-dry production-printing treatment-finished product inspection, PU synthetic leather obtained by this method is not satisfactory aspect feel, physical strength and ABRASION RESISTANCE.Microfiber synthetic leather is all improving a lot aspect feel, physical strength and the ABRASION RESISTANCE with respect to the PU synthetic leather, and all be applied in fields such as high-grade footwear material, automobile cushion and case and bag furniture, but its selling price is the nearly twice of high-grade PU synthetic leather, so the price of microfiber synthetic leather has become the main restricting factor of its large tracts of land popularization.

Summary of the invention

The purpose of this invention is to provide the low production method of imitated microfiber synthetic leather of a kind of production cost, prepared imitated microfiber synthetic leather has the physical property near microfiber synthetic leather.

The technical solution adopted in the present invention is such: a kind of production method of imitated microfiber synthetic leather comprises the steps:

1), the preparation warp knitting cloth, described warp knitting cloth weaves through knitting machine with the cloth pin mode of 34 pins and short fiber yarn count and forms;

2), warp knitting cloth being carried out plucking handles;

3), warp knitting cloth is carried out impregnation and handles through containing immersion trough with the linear velocity of 6～8m/min, the described immersion liquid that contains that contains in the immersion trough is 100: 300～350: 3～5 polyurethane resin by weight portion: dimethyl formamide: ventilative auxiliary agent and an amount of colorant are formed;

4), the warp knitting cloth after the impregnation is cured by coagulating basin and rinsing bowl successively handles and washing is handled, the drying typing makes base cloth again;

5), the base cloth back side is ground with 150 ± 10 purpose sand paper;

6), be coated with the anti-yellowing additive of one deck in the front of base cloth by printing machine.

By adopting the aforementioned techniques scheme, the invention has the beneficial effects as follows: save the coating process step in the wet production process, and save the dry production step, production cost is low, the price that shows prepared imitated microfiber synthetic leather has only 70% of super fine leather, simultaneously owing to adopt special warp knitting cloth and production technology, the imitated microfiber synthetic leather peel strength that said method makes is good, tearing toughness is high, anti-hydrolytic performance good, soft, be rich in sense of fulfillment, anti-wear performance is good.

The specific embodiment

Embodiment discloses a kind of production method of imitated microfiber synthetic leather, and its production process comprises: produce batching-wet production-oven dry rolling-middle inspection-grinding-printing treatment-finished product inspection, its concrete production stage is as follows:

1), the preparation warp knitting cloth, described warp knitting cloth weaves through knitting machine with the cloth pin mode of 34 pins and short fiber yarn count and forms, this kind warp knitting cloth can be bought knitting machine production by oneself and also can adopt the mode of outsourcing to obtain;

2), by napper warp knitting cloth being carried out plucking handles;

3), warp knitting cloth is carried out the impregnation processing with the linear velocity of 6～8m/min through containing immersion trough, the described immersion liquid that contains that contains in the immersion trough is 100: 300: 3 polyurethane resin by weight portion: dimethyl formamide: ventilative auxiliary agent and an amount of colorant are formed, and the elastic modelling quantity of described polyurethane resin is 20～30N/m ²

4), the warp knitting cloth after the impregnation handled directly to be cured by coagulating basin and rinsing bowl without prebake and coating handles and washing is handled, in the described coagulating basin dimethyl formamide is housed, fresh water is housed in the rinsing bowl;

5), the warp knitting cloth after will washing carries out drying and shaping and makes base cloth;

6), the base cloth back side is ground with 150 purpose sand paper;

7), be coated with the anti-yellowing additive of one deck in the front of base cloth by printing machine, the operating procedure of brush machine is anti-yellowing additive to be dissolved in the DMF solvent be positioned in the hopper, synthetic leather floods back oven dry rolling through roller in hopper, main purpose is to handle and can makes synthetic leather have the ultraviolet direct projection flavescence of opposing later;

8), the imitated microfiber synthetic leather after the printing is carried out finished product inspection, the packing warehouse-in.

By the foregoing description as can be seen, the present invention with respect to known PU synthetic leather production method different places be:

1, substitutes nonwoven fabric with 34 pins fluffing warp knitting cloth;

2, the warp knitting cloth after impregnation is handled in the wet production process is handled without prebake and coating and is directly solidified and wash processing;

3, direct without dry process after base cloth is carried out in the anti-xanthochromia coating of the front of base cloth printing one deck.

Claims (1)

1. a production method of imitated microfiber synthetic leather is characterized in that comprising the steps:

1), the preparation warp knitting cloth, described warp knitting cloth weaves through knitting machine with the cloth pin mode of 34 pins and short fiber yarn count and forms;

2), warp knitting cloth being carried out plucking handles;

3), warp knitting cloth is carried out impregnation and handles through containing immersion trough with the linear velocity of 6～8m/min, the described immersion liquid that contains that contains in the immersion trough is 100: 300～350: 3～5 polyurethane resin by weight portion: dimethyl formamide: ventilative auxiliary agent and an amount of colorant are formed;

4), the warp knitting cloth after the impregnation is cured by coagulating basin and rinsing bowl successively handles and washing is handled, the drying typing makes base cloth again;

5), the base cloth back side is ground with 150 ± 10 purpose sand paper;

6), be coated with the anti-yellowing additive of one deck in the front of base cloth by printing machine.