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Superfine fiber instep leather and preparation method thereof

A technology of ultra-fine fiber and shoe upper leather is applied in the field of synthetic leather, which can solve the problems of weak peeling performance and many post-processing steps, and achieve the effects of excellent softness, simple preparation process and simple slurry composition.

Inactive Publication Date: 2017-09-08
张家港嘉泰超纤科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many steps in the post-processing process, and at the same time, there are many types of raw materials used in the slurry, and the peeling performance is not strong.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Provided in this example is a microfiber shoe upper leather, which includes a microfiber base material layer and a coating layer transferred to the front of the microfiber base material layer through a release paper, and the coating layer includes a coating layer along the thickness The direction is to apply three coatings, two coatings, and one coating on the front side of the superfine fiber substrate layer in sequence.

[0029] The microfiber substrate mentioned in this example was purchased from Shanghai Huafon Microfiber Material Co., Ltd.

[0030] Concrete, the preparation method of this microfiber shoe upper leather is as follows, comprises the following several steps:

[0031] 1) Substrate pre-treatment, the microfiber substrate is infiltrated with an aqueous solution containing 3%~8% softener, and then transported to an oven at 100~130°C for drying, winding, and semi-finished Bass inspection, which is used here The length of the oven is 25 meters, and the spee...

Embodiment 2

[0048] This example discloses a method for preparing microfiber shoe upper leather. The difference between it and Example 1 is that the slurry used in the first coating layer in step 2) consists of 100 parts by mass. 1 part of non-yellowing hydrolysis-resistant resin, 35 parts of DMF, 25 parts of MEK, and 10 parts of colorant are mixed, and the slurry viscosity is 4200cps;

[0049] The slurry used in the second coating layer is composed of 100 parts of non-yellowing hydrolysis-resistant resin, 25 parts of DMF, 12 parts of MEK, and 8 parts of colorant in parts by mass, and the viscosity of the slurry is 5800 cps;

[0050] The slurry used in the three-coat coating is mixed by 100 parts of non-yellowing hydrolysis-resistant resin, 28 parts of DMF, 22 parts of MEK, 8 parts of colorant, and 0.04 part of leveling and stripping aid in parts by mass, and Its slurry viscosity is 6100cps.

[0051] The physical properties of the shoe upper leather prepared by the preparation method in t...

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Abstract

The invention discloses superfine fiber instep leather and a preparation method of the instep leather. The preparation method comprises the following steps of 1) performing base material pretreatment: soaking a superfine fiber base material in an aqueous solution containing 3-8% of softening agent; 2) performing dry method veneering: coating slurry on release paper, performing semi-wet adhesion on a semi-finished product base obtained by treatment in Step 1), performing drying, removing the release paper, performing rolling, and performing medium grade inspection, wherein the slurry coated on the release paper comprises a first coating, a second coating and a third coating which are sequentially coated on the release paper; and 3) performing an aftertreatment technology: performing rinsing and boarding. The preparation method is simple; flexibility treatment is performed on the base material prior to the veneering; the slurry used by coating is simple in component; the prepared instep leather has physical properties such as high tearing, high stripping, yellowing resistance and hydrolysis resistance by adjusting the temperature and the sewing speed in a whole preparation process; a hand sense and a light sense are greatly improved; and the instep leather is approximate to or even exceeds natural leather.

Description

technical field [0001] The invention relates to the technical field of synthetic leather, in particular to a superfine fiber upper leather and a preparation method 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. However, the traditional processing technology will destroy the structure of the microfiber during the processing, thereby affecting the physical properties, light perception and hand feeling of the product, and cannot be well applied to shoe upper leather. In order to solve the above p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/00B32B27/06B32B33/00
CPCD06N3/0004D06N3/0061D06N3/0077D06N3/0097D06N2205/023D06N2209/103D06N2209/1664D06N2211/28
Inventor 何再秋陈中华
Owner 张家港嘉泰超纤科技有限公司
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