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Dry garment leather base and preparation process thereof

A garment leather base and preparation process technology, applied in the field of dry-process garment leather base and its preparation process, can solve the problems of poor moisture permeability, unrecyclable solvents, environmental and human hazards, etc., and achieve soft hand feeling and easy continuous production The effect of high production and peel strength

Inactive Publication Date: 2016-11-16
HEFEI KETIAN WATERBORNE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in recent years, due to the increase in raw material prices and restrictions on environmental protection emissions, companies have to consider the recovery and reuse of solvents. The solvent recovery capacity has reached about 90%, but there are still about 10% of solvents that cannot be recovered. Wastewater is discharged into the environment, causing great harm to the environment and the human body
Moreover, the existing synthetic leather also has disadvantages such as poor moisture permeability and air permeability, faster wear and tear, and poor folding resistance.

Method used

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  • Dry garment leather base and preparation process thereof
  • Dry garment leather base and preparation process thereof
  • Dry garment leather base and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A kind of preparation technology of dry-process garment leather bass, comprises the following steps:

[0042] (1) Prepare water-based polyurethane synthetic leather foaming slurry:

[0043] Add 50kg water-based polyurethane KT702E (Hefei Ketian company) in the dispersing kettle, add 0.2kg dispersant, 0.5kg cross-linking agent, 5kg 500 order wood flour, 4kg 1250 order kaolin under the condition of 500 rev / min at stirring speed, 3kg of foam stabilizer and 1.5kg of lignocellulose thickener were dispersed for 30 minutes at a stirring speed of 1000 rpm after the feeding was completed, and the viscosity was adjusted to 15000-20000mPa.s to obtain a dry synthetic leather slurry.

[0044] Before coating, under the stirring condition of 500 rev / min, add 3kg of foaming agent to the dry synthetic leather slurry for foaming, and use compressed air to bubble the slurry with a bubbling rate of 0.5m 3 / h, while bubbling, the stirring speed was increased to 1500 rpm, and the foaming ra...

Embodiment 2

[0050] A kind of preparation technology of dry-process garment leather bass, comprises the following steps:

[0051] (1) Prepare water-based polyurethane synthetic leather foaming slurry:

[0052] Add 50kg water-based polyurethane KT631 (Hefei Ketian company) in the dispersing kettle, add 0.2kg dispersant, 0.5kg cross-linking agent, 5kg 500 order wood flour, 4kg 1250 order kaolin under the condition of 500 rev / min at stirring speed, 3kg of foam stabilizer and 1.5kg of lignocellulose thickener were dispersed for 30 minutes at a stirring speed of 1000 rpm after the feeding was completed, and the viscosity was adjusted to 15000-20000mPa.s to obtain a dry synthetic leather slurry.

[0053] Before coating, under the stirring condition of 500 rpm, add 3kg of foaming agent to the dry-process synthetic leather slurry for foaming, and use compressed air to bubble the slurry with a bubbling rate of 0.5m 3 / h, while bubbling, the stirring speed was increased to 1200 rpm, and the foaming...

Embodiment 3

[0059] A kind of preparation technology of dry-process garment leather bass, comprises the following steps:

[0060] (1) Prepare water-based polyurethane synthetic leather foaming slurry:

[0061] Add 40kg water-based polyurethane KT702E (Hefei Ketian company) and 10kg water-based polyurethane KT631 (Hefei Ketian company) in the dispersion kettle, add 0.3kg dispersant, 0.5kg cross-linking agent, 7kg 600-mesh wood flour, 5kg 1250-mesh kaolin, 3kg foam stabilizer, 1.8kg lignocellulose thickener, after feeding, disperse for 30min at a stirring speed of 1200 rpm, and adjust the viscosity to 22000-26000mPa.s , to prepare dry-process synthetic leather slurry;

[0062] Before coating, under the stirring condition of 500 rpm, add 3kg of foaming agent to the dry synthetic leather slurry for foaming, and use compressed air to bubble the slurry with a bubbling rate of 0.6m 3 / h, foaming under stirring conditions, while bubbling, the stirring speed was raised to 1500 rpm, and the foamin...

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Abstract

The invention provides a dry garment leather base and a preparation process thereof. The preparation process includes the steps: 1) base cloth treatment: completely soaking base cloth in mixed solution of soluble calcium salt and leather softeners, mangling the base cloth and then ironing and drying the base cloth by an ironing roller; 2) coating the base cloth with 200-500g / m<2> of garment leather base foaming slurry by a scraping method; 3) drying the base cloth in a drying oven; 4) base rolling: cooling and rolling the base cloth by a cooling roller to prepare the dry garment leather base. The prepared dry garment leather base has good moisture and air permeability, is quite soft in hand feeling and good in rebound resilience and wear resistance, and can meet higher performance requirements and environmental protection standards.

Description

technical field [0001] The invention relates to the technical field of garment leather production technology, and specifically discloses a dry-process garment leather base and a preparation process thereof. Background technique [0002] Natural leather is widely used in the production of daily necessities and industrial products due to its excellent natural characteristics. However, with the growth of the world population, the human demand for leather has doubled, and the limited amount of natural leather has long been unable to meet this demand. In order to solve this contradiction, scientists began to research and develop artificial leather and synthetic leather decades ago to make up for the deficiency of natural leather. The current practice has proved that the excellent performance of synthetic leather cannot be replaced by natural leather. From the analysis of domestic and foreign markets, synthetic leather has also replaced natural leather with insufficient resources ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08L97/02C08L1/02C08K13/02C08K3/34C08J9/04D06N3/14D06M15/643
CPCC08L75/08C08J9/0061C08J9/04C08J2375/06C08J2375/08C08J2475/06C08J2497/02C08L75/06C08L2201/08C08L2203/14C08L2205/02C08L2205/03C08L2205/035C08L2205/16D06M15/643D06M2200/50D06N3/005D06N3/0059D06N3/0061D06N3/0063D06N3/14D06N2209/103D06N2209/123D06N2209/126D06N2209/1642D06N2209/1664D06N2209/1685D06N2211/28C08L97/02C08L1/02C08K13/02C08K3/346
Inventor 董永红王刚戴家兵李维虎
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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