Suede leather and preparation method thereof

Abstract

The invention relates to suede leather and a preparation method thereof. The suede leather comprises a suede surface layer, a middle reinforcing layer and a base cloth reinforcing layer, the suede surface layer, the middle reinforcing layer and the base cloth reinforcing layer are connected layer by layer from top to bottom; the suede surface layer is a suede pattern layer, and the preparation method of the suede leather comprises the following steps: selecting release paper, and preparing polyurethane fabric slurry; coating release paper with the prepared polyurethane fabric slurry in a gapless manner, performing embossing treatment through an embossing roller, and drying to form a polyurethane fabric layer; bonding the middle reinforcing layer and the base cloth reinforcing layer with the polyurethane fabric layer to obtain a semi-finished product; and drying the semi-finished product to obtain the artificial leather. The appearance and hand feeling of the fabric are similar to chamois suede, and the interior grade is improved.

Description

Technical Field

[0001] The invention relates to synthetic leather, in particular to suede-like leather. Background Art

[0002] China is currently the world's largest automobile consumer market. In 2017, the automobile production exceeded 29 million, of which 20% were equipped with leather seats. With the prosperity of the automobile market, the business opportunities of automobile leather making have attracted the attention of more and more leather companies. Statistics at the end of 2017 showed that in an environment where the profits of all products in the national leather industry generally declined, only the profits of automobile leather continued to grow.

[0003] Polyurethane synthetic leather has obvious advantages over other synthetic leathers in terms of wear resistance, softness, and leather feel. It is one of the most important synthetic leathers at present and has been widely used in many fields such as automotive interiors, sofas, clothing, luggage, etc.

[0004] Especially for car interior, it needs to have natural leather texture and feel, good moisture permeability, wear resistance, scratch resistance, soft texture and elasticity. However, general artificial leather and synthetic leather have weak leather feel, low quality and poor performance, and cannot meet the market demand. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a suede-like leather having an appearance and a feel similar to suede and improving the grade of interior decoration, and a preparation method thereof.

[0006] Technical solution: In order to solve the above technical problems, the suede-like leather described in the present invention includes a suede-like surface layer, an intermediate reinforcement layer and a base fabric reinforcement layer; the suede-like surface layer, the intermediate reinforcement layer and the base fabric reinforcement layer are connected layer by layer from top to bottom; the suede-like surface layer is a suede pattern layer.

[0007] Furthermore, one side of the suede-like surface layer is connected to the middle reinforcement layer, and the other side is provided with embossing, and the embossed surface adopts an imitation leather texture structure.

[0008] Furthermore, the intermediate reinforcement layer includes a resin layer I and a fabric layer, the resin layer I is arranged on the upper part of the fabric layer, and the thickness of the fabric layer is twice that of the suede-like surface layer.

[0009] Furthermore, the base fabric reinforcement layer includes a resin layer II and a base fabric layer, and the resin layer II is arranged on the upper part of the base fabric layer.

[0010] A method for preparing suede-like leather comprises the following steps: (1) Select release paper and prepare polyurethane fabric slurry; (2) The prepared polyurethane fabric slurry is applied onto the release paper without gaps, embossed by an embossing roller, and then dried to form a polyurethane fabric layer; (3) bonding the intermediate reinforcement layer and the base fabric reinforcement layer to the polyurethane fabric layer to obtain a semi-finished product; (4) Drying the semi-finished product to obtain artificial leather.

[0011] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: (1) The present invention uses waterborne polyurethane to prepare artificial leather, which does not contain organic solvents and will not cause harm to the human body and the environment; (2) The present invention adopts embossed foaming treatment and selects nickel steel rollers for compression foaming, so that only the outermost layer of the polyurethane synthetic leather is foamed. The surface has a strong velvety feel and a reverse and smooth hair effect. There is no large bubble phenomenon on the surface. The appearance and feel are similar to suede, which improves the grade of interior decoration. DETAILED DESCRIPTION

[0012] The present invention will be further described below in conjunction with the embodiments.

[0013] The suede-like leather of the present invention comprises a suede-like surface layer, an intermediate reinforcement layer and a base fabric reinforcement layer; the suede-like surface layer, the intermediate reinforcement layer and the base fabric reinforcement layer are connected layer by layer from top to bottom; the suede-like surface layer is a suede pattern layer.

[0014] One side of the imitation suede surface layer is connected to the middle reinforcement layer, and the other side is provided with embossing, and the embossed surface adopts an imitation leather texture structure.

[0015] The intermediate reinforcement layer comprises a resin layer I and a fabric layer. The resin layer I is arranged on the upper part of the fabric layer. The thickness of the fabric layer is twice that of the suede-like surface layer.

[0016] The base fabric reinforcement layer comprises a resin layer II and a base fabric layer, and the resin layer II is arranged on the upper part of the base fabric layer.

[0017] A method for preparing suede-like leather comprises the following steps: (1) Select release paper and prepare polyurethane fabric slurry; (2) The prepared polyurethane fabric slurry is applied onto the release paper without gaps, embossed by an embossing roller, and then dried to form a polyurethane fabric layer; (3) bonding the intermediate reinforcement layer and the base fabric reinforcement layer to the polyurethane fabric layer to obtain a semi-finished product; (4) Drying the semi-finished product to obtain artificial leather.

[0018] The invention adopts water-based polyurethane to prepare artificial leather, which does not contain organic solvent and will not cause harm to human body and environment. The invention adopts embossing foaming treatment and selects nickel steel roller for compression foaming, so that only the outermost layer of polyurethane synthetic leather is foamed, the surface has a strong velvety feeling and has a reverse and smooth hair effect, there is no large bubble phenomenon on the surface, the appearance and feel are similar to suede, and the grade of interior decoration is improved.

[0019] The present invention provides a thought and method. There are many methods and ways to implement the technical solution. The above is only the preferred implementation mode of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. Imitation suede leather, characterized by: It comprises a suede-like surface layer, an intermediate reinforcement layer and a base fabric reinforcement layer; the suede-like surface layer, the intermediate reinforcement layer and the base fabric reinforcement layer are connected layer by layer from top to bottom; the suede-like surface layer is a suede pattern layer.

2. The suede-like leather according to claim 1, characterized in that: One side of the imitation suede surface layer is connected to the middle reinforcement layer, and the other side is provided with embossing, and the embossed surface adopts an imitation leather texture structure.

3. The suede-like leather according to claim 1, characterized in that: The intermediate reinforcement layer comprises a resin layer I and a fabric layer. The resin layer I is arranged on the upper part of the fabric layer. The thickness of the fabric layer is twice that of the suede-like surface layer.

4. The suede-like leather according to claim 1, characterized in that: The base fabric reinforcement layer comprises a resin layer II and a base fabric layer, and the resin layer II is arranged on the upper part of the base fabric layer.

5. A method for preparing suede-like leather according to claim 1, characterized in that: It includes the following steps, (1) Select release paper and prepare polyurethane fabric slurry; (2) The prepared polyurethane fabric slurry is applied onto the release paper without gaps, embossed by an embossing roller, and then dried to form a polyurethane fabric layer; (3) bonding the intermediate reinforcement layer and the base fabric reinforcement layer to the polyurethane fabric layer to obtain a semi-finished product; (4) Drying the semi-finished product to obtain artificial leather.