CN101319445A

CN101319445A - Leather base cloth with high sewing strength

Info

Publication number: CN101319445A
Application number: CNA2007100524596A
Authority: CN
Inventors: 涂元福; 汪庭才
Original assignee: HUBEI JINFUXIANG TEXTILE CO Ltd
Current assignee: HUBEI JINFUXIANG TEXTILE CO Ltd
Priority date: 2007-06-10
Filing date: 2007-06-10
Publication date: 2008-12-10

Abstract

The invention discloses a leather-based cloth with high sewing strength, comprising the following technological process that: 150+-10 Kg of coiled grey cloth is put in to a vat, desized through hot water, washed through hot water, dyed, softened, washed through cold water, rolled up, dried, napped, shaped, coiled and put into a warehouse, wherein in the process of desizing through hot water, 1-3 Kg of oxidative desizing agent and 1-2 Kg of flake caustic soda are added in; after the process of desizing through hot water, continuous dip-tie dyeing is carried out for 35-45 minutes; in the dyeing process, 2-3 Kg of chelating dispersant is added in; in the napping process, napping is carried out for six times, and light raising and multi-pulling are adopted, so as to control the number of yarn ends per square centimeter to be 60,000 and control the thickness of naps to be between 0.06 and 0.07 mm. The invention has the advantage of greatly improving the sewing strength of industrial leather-based cloth under the circumstance that other physical indexes of the grey cloth can reach standards without increasing production cost.

Description

A kind of leather base cloth of high sewing strength

Technical field

The present invention relates to remove from office the production technical field of base cloth.

Background technology

At present, adopting institutional framework on the market is T/C21*10, the 0.5mm heavy leather base cloth that the grey cloth of 38*30 is made into, sewing strength is not very good, in its use, sew up the place mutually at two leather base cloths, usually cracking can be pullled, thereby had a strong impact on the service life of the synthetic leather that adopts the making of this kind institutional framework, and at present, in order to adapt to the needs in market, can make its every physical index all reach standard, and under the cost situation that can not increase, people have taked several different methods to improve its sewing strength, wherein a kind of method is: by changing the institutional framework of grey cloth, increase its thread count, increase cohesive force between the institutional framework by increasing thread count, thereby reach the purpose that improves sewing strength, but the drawback of this kind method is that it has not only increased considerably the production cost of grey cloth, is unfavorable for market competition, and having changed the style of process hides, this point is inadvisable; Another kind method is: the method that adopts high-temperature shaping, because polyster fibre aggregates into macromolecular chain structure in hot conditions (180 ℃-210 ℃) by the micromolecule chain structure, make tissue surface coarse, increase frictional force, strengthened the institutional framework cohesion, thereby also can reach the requirement that improves sewing strength, but adopt the disadvantage of high-temperature shaping method to be, the inhomogeneous meeting in fabric heated part in type-approval process causes the slack list, and the fabric slack list easily causes process hides to crumple, so this point is also inadvisable; Also have present conventional method to be: to increase sewing strength by chemical assistant, its particularly technological process be: (150 ± 10Kg)---following cylinders---stream hot water destarch, 5 roads (add enzyme system desizing agent 2-3Kg to the grey cloth rolling, sheet alkali 2-3Kg, it is 90 ℃ that the 2nd road plays water temperature) (the 1-2 road water temperature is 50 ℃ in 6 roads that dye---stream hot water cleans 2 roads (60 ℃ of water temperatures)---, the water temperature that plays at the 3rd road plays 98 ℃, OK oil 3-4Kg and salt 1-2Kg)---soft 2 roads (add softener 3-4Kg, 40 ℃ of water temperatures)---the stream cold wash is rolled up on 3 roads, and---((fabric width is at 58 ± 0.5 inches in typing that air pressure is 0.38-0.4Kpa)---napping (4 road)---in oven dry, 70 ± 5 ℃ of temperature)---rolling---warehouse-in, its sewing strength of industry leather base cloth that adopts this method to produce is difficult to reach standard-required, its reason is: grey cloth is after destarch dyeing, its surperficial smoother, after the napping, every square centimeter burr is less, make that the cohesive force between the grey cloth molecule is less, be easy to generate slip phenomenon during use, promptly sewing strength does not reach standard-required.

Summary of the invention

Purpose of the present invention is exactly that a kind of production cost that do not increase is provided in order to solve the problems of the technologies described above, and other every physical index all reaches the leather base cloth of a kind of high sewing strength of standard.

A kind of leather base cloth of high sewing strength, its technological process is as follows: grey cloth rolling (150 ± 10Kg)---following cylinder---stream hot water destarch---stream hot water cleans---dyeing---softness---stream cold water cleans------oven dry---napping---typing---rolling---warehouse-ins of going up volume, wherein in stream hot water destarch process, add oxidation desizing agent 1-3Kg, sheet alkali 1-2Kg; After stream hot water destarch process, dipped continuously 35-45 minutes again; In dyeing course, add chelated dispersants 2-3Kg; In the napping process, divide 6 road nappings, adopt the light Duola of rising, every square centimeter of burr is controlled at 60000, with napping fine hair THICKNESS CONTROL between the 0.06mm to 0.07mm.

Described oxidation desizing agent is DesizingSSC20.

Described chelated dispersants is chelating SN.

Described chelated dispersants is chelating ED.

In stream hot water destarch process, also adding has hydrogen peroxide 2-4Kg.

Described in stream hot water destarch process, it is 98 ℃ that the 3rd road plays water temperature; Clean in the 2 road processes at stream hot water, water temperature is 70 ℃.

The beneficial effect that the present invention adopts above-mentioned technical solution to reach is: according to the characteristic of terylene fiber in the grey cloth; by in stream hot water destarch process; change previously used enzyme system desizing agent into oxidation desizing agent and hydrogen peroxide; after stream hot water destarch process; dipped continuously again 35-45 minute; make the internal penetration of fiber; expand; being equipped with chelated dispersants again in dyeing course uses; because the terylene fiber has the characteristic of acidproof alkali resistant; therefore strong oxidizer not only can not change the physical and chemical performance of grey cloth; and the strand of fiber is changed; form yarn count appearance diaphragm; increased the specific area of yarn count; changed the surface structure of yarn count; increased the coefficient of friction on yarn count surface; make it to be issued to bulk softness in the shaggy prerequisite of yarn count; be beneficial to follow-up napping; in follow-up napping operation; the method that adopts Duola gently to rise; with the minimum degree minimizing grey cloth institutional framework is damaged; every square centimeter burr on the grey cloth is controlled at 60000; with napping fine hair THICKNESS CONTROL between the 0.06mm to 0.07mm; make matte short; all; close; with the frictional force that increases fabric face with embrace and power; thereby neither increasing production cost, all other physical indexs of grey cloth are all reached under the situation of standard, improving the sewing strength of industrial leather base cloth greatly.

The specific embodiment

Technological process of the present invention is as follows: (150 ± 10Kg)---following cylinders---stream hot water destarch, 5 roads (add oxidation desizing agent 1-3Kg to the grey cloth rolling, hydrogen peroxide 2-4Kg, sheet alkali 1-2Kg, water temperature the 3rd road rises and heats is 98 ℃) (it is 98 ℃ that water temperature the 4th road rises in 6 roads that dye---dip (35-45 minutes)---stream hot water clean 2 roads (water temperature is 70 ℃)---, add chelated dispersants 3-4Kg, OK oil 2-3Kg, salt 1-2Kg)---soft 2 roads (add softener 2-3Kg, 40-45 ℃ of water temperatures)---stream cold water cleans 3 roads, and------((fabric width is at 58 ± 0.5 inches in typing that air pressure is 0.38-0.4Kpa)---napping (6 road)---in oven dry to go up volume, 60 ± 5 ℃ of temperature)---rolling---warehouse-in, that described oxidation desizing agent adopts is DesizingSSC20; That described chelated dispersants adopts is chelating SN or chelating ED; That described softener adopts is jinsoft 22.As follows by above technological process testing result:

The project testing result	Thread count	Thickness (mm)	Sewing strength Ibs/in	Tensile strength Ibs/in	Weight per square meter g/m ²
The project testing result	Thread count	Thickness (mm)	Sewing strength Ibs/in	Tensile strength Ibs/in	Weight per square meter g/m ²	Standard	41×30	0.42±0.03	≥40	≥70	120±3
Former technology	41×30	0.42-0.45	(20-35) warp	The 70-80 warp	118-120	Standard	41×30	0.42±0.03	≥40	≥70	120±3
Former technology	41×30	0.42-0.45	(20-35) warp	The 70-80 warp	118-120	New technology	41×30	0.42-0.45	(45-100) warp	The 70-110 warp	118-120

Increase this physical index of sewing strength according to the customer demand needs, by the contrast of repeated multiple times (through more than 100 times) technology, test, finally determined new technological flow under any condition of cost not increasing, made annual more than 2,000 ten thousand yuan of the incomes from sales that increase of this Xiang Wei company.

Claims

1, a kind of leather base cloth of high sewing strength, its technological process is as follows: the grey cloth rolling, and---------stream hot water cleans, and---dyeing,------stream cold water cleans---to be gone up volume and---dries---napping---typing---rolling---warehouse-in softness the destarch of stream hot water following cylinder, it is characterized in that: grey cloth rolling 150 ± 10Kg, in stream hot water destarch process, add oxidation desizing agent 1-3Kg, sheet alkali 1-2Kg; After stream hot water destarch process, dipped continuously again 35-45 minute; In dyeing course, add chelated dispersants 2-3Kg; In the napping process, divide 6 road nappings, adopt the light Duola of rising, every square centimeter burr is controlled at 60000, with napping fine hair THICKNESS CONTROL between the 0.06mm to 0.07mm.

2, the leather base cloth of a kind of high sewing strength according to claim 1 is characterized in that: described oxidation desizing agent is DesizingSSC20.

3, the leather base cloth of a kind of high sewing strength according to claim 1 is characterized in that: described chelated dispersants is chelating SN.

4, the leather base cloth of a kind of high sewing strength according to claim 1 is characterized in that: described chelated dispersants is chelating ED.

5, the leather base cloth of a kind of high sewing strength according to claim 1 is characterized in that: in stream hot water destarch process, also adding has hydrogen peroxide 2-4Kg.

6, according to the leather base cloth of claim 1,2,3,4 or 5 described a kind of high sewing strengths, it is characterized in that: described in stream hot water destarch process, it is 98 ℃ that the 3rd road plays water temperature; Clean in the 2 road processes at stream hot water, water temperature is 70 ℃.