TW201429718A - Wash-resistant, waterproof, permeable and durable leather material and production method thereof - Google Patents

Abstract

A wash-resistant, waterproof, permeable and durable leather material and a production method thereof are disclosed, in which a base fabric is used as the surface layer and a thermoplastic polyurethane film is used as the lining layer. The surface of the base fabric is formed with an adhesive layer of solvent-type polyurethane, and the thermoplastic polyurethane film is formed on its surface with wet-reactive hot-melt adhesive resin layer. The adhesive layer is used for bonding the base fabric to the wet-reactive hot-melt adhesive resin layer on the surface of the thermoplastic polyurethane film, so as to prepare the final product of a wash-resistant, waterproof, permeable and durable leather material, which is windproof, waterproof, and permeable, capable of maintaining its original physical properties after being washed by 20 times, thereby maintaining the excellent properties such as physical comfortableness.

Description

Washable waterproof, moisture permeable and durable leather material and preparation method thereof

The invention relates to a composite fabric and a manufacturing method thereof; in particular to a water-resistant waterproof, moisture-permeable and durable leather material and a preparation method thereof.

Conventional thermoplastic polyurethane (TPU) is processed on a fabric by forming a thermoplastic polyurethane film on the fabric using a coating process, but the coating process causes the thermoplastic polyurethane film to pass through the crucible. After the crucible, damage occurs. Therefore, the processed thermoplastic polyurethane composite leather cannot have a water-washing effect, which causes the fabric to have a reduced water pressure after washing, and the physical properties of the original leather cannot be retained.

The other composite leather to which the thermoplastic polyurethane film is attached is adhered to the fabric by the adhesive layer of the wet reactive hot melt adhesive resin layer. However, the composite leather has insufficient adhesion. The phenomenon of peeling off of the thermoplastic polyurethane film occurs after washing with water.

In view of the above problems, the present invention has been proposed in view of the above-mentioned shortcomings of the prior art, and proposes a new water-resistant waterproof, moisture-permeable and durable leather material and a manufacturing method thereof to effectively overcome the above problems.

The main object of the present invention is to provide a water-resistant, waterproof, moisture-permeable and durable leather material which can have the functions of windproof, waterproof and moisture permeable, and can retain the original leather material properties after 20 times of water washing.

Another object of the present invention is to provide a method for manufacturing a water-resistant, waterproof, moisture-permeable and durable leather material, which can improve the functionality of the leather material, and can improve the convenience of subsequent processing, and is suitable for various fabrics, and the finished product can be applied to garments. Used leather.

In order to achieve the above object, the present invention provides a water-resistant waterproof, moisture-permeable and durable leather material, which is composed of a thermoplastic polyurethane film, a wet reactive hot melt adhesive resin layer, a base fabric and an adhesive layer, wherein the thermoplastic polyamino group The formic acid film is used as the inner layer, and the surface of the thermoplastic polyurethane film is provided with a wet reactive hot melt adhesive resin layer. The base fabric is used as a surface layer, and the back surface of the base fabric is provided with an adhesive layer. A solvent-type polyurethane is formed by bonding the base fabric to the wet reactive hot melt adhesive resin layer on the surface of the thermoplastic polyurethane film.

Specifically, the base fabric may be a knitted fabric, a plain woven fabric, a non-woven fabric or a film. The adhesive layer can be formed from a solvent-type polyurethane-added isocyanate (NCO) bridging agent.

In addition, the present invention provides a method for producing a water-resistant waterproof, moisture-permeable and durable leather material, which comprises the steps of applying a layer of paste on the surface of the base fabric to form an adhesive layer comprising a solvent-type polyurethane and thermoplastic The surface of the polyurethane film is coated with a liquid wet reactive hot melt adhesive resin to form a wet reactive hot melt adhesive resin layer. Finally, the base fabric is adhered to the thermoplastic polyurethane by the subsequent layer. A wet reactive hot melt adhesive resin layer on the surface of the grease film to produce a water-resistant, waterproof, moisture-permeable and durable leather material.

Specifically, the base fabric may be a knitted fabric, a plain woven fabric, a non-woven fabric or a film, and may be preheated by infrared heating, and the preheating temperature is 80 to 100 ° C. In addition, the paste further contains an isocyanate (NCO) bridging agent, wherein the solvent type polyurethane is used in an amount of 100 PHR, the isocyanate bridging agent is used in an amount of 5 PHR, and the paste has a viscosity of 30,000 CPS.

The liquid wet reactive hot melt adhesive resin is formed by softening preheating of a solid wet reactive hot melt adhesive resin, and the preheating process does not require stirring, and the preheating temperature is 100 to 170 ° C. The heat time is 2 to 4 hours, and the viscosity of the liquid wet reactive hot melt adhesive resin is controlled at 9000 to 12000 CPS. Thereafter, it is applied to the surface of the thermoplastic polyurethane film by a knife on roll or a knife on air coating method. The amount of the thermoplastic polyurethane film is 100 PHR, and the amount of the solid wet reactive hot melt resin is 100 PHR.

The process conditions for the base fabric to be bonded to the thermoplastic polyurethane film are as follows: a bonding temperature of 80 to 100 ° C, a bonding distance of 0.08 mm, and a bonding pressure of 1 kg/cm 2 . After that, it is allowed to stand for 24 to 48 hours to make the wet reactive hot melt adhesive resin bridging, and to obtain a water-resistant waterproof, moisture-permeable and durable leather material.

In order to further understand the purpose, features and functions of the present invention, the drawings are described in detail as follows:

10‧‧‧Kib

20‧‧‧Thermoplastic polyurethane film

30‧‧‧ Wet reactive hot melt adhesive resin layer

40‧‧‧Next layer

50‧‧‧Waterproof, waterproof, moisture permeable and durable leather

Fig. 1 is a schematic view showing the structure of the water-resistant waterproof, moisture-permeable and durable leather provided by the present invention.

2 is a flow chart of a method for manufacturing a water-resistant, waterproof, moisture-permeable and durable leather material provided by the present invention.

FIG. 1 is a schematic view showing the structure of the water-resistant waterproof and moisture-permeable durable leather provided by the present invention. As shown in the figure, the surface layer of the water-resistant waterproof and moisture-permeable and durable leather material 50 of the present invention is a base fabric 10, which can be selected from general textile articles such as knitted fabrics, plain woven fabrics, non-woven fabrics and films, or various functionalities (such as antibacterial, Antistatic, etc.) textile article, while the inner layer is a thermoplastic polyurethane (TPU) film 20, and the surface of the thermoplastic polyurethane film 20 is provided with a wet reactive hot melt adhesive resin layer 30, a base fabric The surface of 10 is provided with an adhesive layer 40, and the layer 40 is formed of a solvent-type polyurethane-added isocyanate (NCO) bridging agent, whereby the substrate 40 is bonded to the thermoplastic polyurethane. A wet reactive hot melt adhesive resin layer 30 on the surface of the lipid film 20.

The water-resistant, waterproof, moisture-permeable and durable leather material 50 is windproof, waterproof, and moisture-permeable, and retains the leather material of the original leather material after 20 times of washing, thereby maintaining excellent characteristics such as physiological comfort, and is applicable to various fabrics. In particular, it can be applied to leather for garments.

Next, please refer to FIG. 2 to illustrate the flow of the method for manufacturing the water-resistant waterproof, moisture-permeable and durable leather provided by the present invention. The steps are as follows: First, in step S10, the base cloth and the preparation paste are provided, and the paste is Solvent-based polyurethane with an isocyanate (NCO) bridging agent added. The amount of each component of the paste is 100 PHR for solvent-based polyurethane and 5 PHR for bridging agent. The viscosity of the paste is controlled at 30,000. CPS. The choice of base cloth can be widely used for knitting, plain weaving, non-woven fabric or film. Generally, textile articles or textile articles of various functionalities (such as antibacterial, antistatic, etc.) are preheated by infrared heating, and the preheating temperature is about 80~100 °C. The paste is then applied to the surface of the base fabric to form an adhesive layer.

Then, as in step S20, a thermoplastic polyurethane film (TPU) and a liquid wet reactive hot melt adhesive resin (PUR) are prepared. The thermoplastic polyurethane film is used in an amount of 100 parts and can be used without any treatment. The liquid wet reactive hot melt adhesive resin is prepared by preheating and softening 100 parts of the solid wet reactive hot melt adhesive resin through an oven to change from a solid to a liquid state, and to make a liquid wet reaction. The viscosity of the hot melt rubber resin is controlled at 9000~12000 CPS. The preheating process does not need to be stirred and mixed, the preheating temperature is 100~170 °C, the preheating time is 2~4 hours; during the preheating process, the preheating temperature Do not exceed its decomposition temperature and reaction temperature to avoid damage to the material caused by bridging reaction. Thereafter, the liquid wet reactive hot melt adhesive resin is applied to the surface of the thermoplastic polyurethane film by a knife on roll or a knife on air coating method by using a coater. To form a wet reactive hot melt adhesive resin layer.

Finally, in step S30, the thermoplastic polyurethane film forming the wet reactive hot melt adhesive resin layer is immediately bonded to the base fabric, and the bonding temperature is 80 to 100 ° C, and the bonding distance (base cloth with The distance of the thermoplastic polyurethane film is 0.08 mm, and the bonding pressure is 1 kg/cm 2 (kg/cm ² ). By the subsequent layer, the base fabric can be bonded to the thermoplastic polyurethane. The wet reactive hot melt adhesive resin layer on the surface of the film is placed and wound for 24 to 48 hours, and after waiting for bridging of the wet reactive hot melt adhesive resin, the water-resistant waterproof and moisture-permeable and durable leather of the present invention can be obtained. Material, as shown in Figure 1.

The water-resistant waterproof and moisture-permeable durable leather obtained by the production method can have a bonding strength of 1.0 kg/cm (kg/cm), and after 20 times of washing, no thermoplastic polyurethane film is peeled off. Phenomenon, and retain the initial physical properties of the finished product.

In summary, the water-resistant waterproof and moisture-permeable and durable leather material disclosed in the present invention and the manufacturing method thereof not only make the fabric have windproof, waterproof, moisture-permeable characteristics, but also retain the physical properties of the original leather after 20 times of washing. Further, the added value of the product can be improved, and further, the subsequent processing can be facilitated, and the selection of the cloth type can widely use knitted fabrics, plain woven fabrics, non-woven fabrics, films, and the like, and thus has diversity, and the importance of the present invention is apparent.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to be limiting. this invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

10‧‧‧Kib

20‧‧‧Thermoplastic polyurethane film

30‧‧‧ Wet reactive hot melt adhesive resin layer

40‧‧‧Next layer

50‧‧‧Waterproof, waterproof, moisture permeable and durable leather

Claims (15)

A water-resistant waterproof, moisture-permeable and durable leather material comprising: a thermoplastic polyurethane film as a inner layer; a wet reactive hot-melt adhesive resin layer disposed on the surface of the thermoplastic polyurethane film; a cloth as a surface layer; and an adhesive layer formed of a solvent-type polyurethane and disposed on the surface of the base fabric, and bonded to the surface of the base fabric and the thermoplastic polyurethane film Between the reactive hot melt adhesive resin layers. The water-resistant waterproof and moisture-permeable durable leather according to the first aspect of the patent application, wherein the base fabric is selected from the group consisting of a knitted fabric, a plain woven fabric, a non-woven fabric and a film. A water-resistant waterproof and moisture-permeable durable leather according to the first aspect of the patent application, wherein the adhesive layer is formed by adding a isocyanate (NCO) bridging agent to the solvent-type polyurethane. A method for manufacturing a water-resistant, waterproof, moisture-permeable and durable leather material, comprising the steps of: providing a base fabric and a paste, the paste comprising a solvent-type polyurethane, and applying the paste to the surface of the base fabric Forming an adhesive layer; providing a thermoplastic polyurethane film and a liquid wet reactive hot melt adhesive resin, and applying the liquid wet reactive hot melt adhesive resin to the thermoplastic polyurethane film Surface to form a wet reactive hot melt adhesive resin layer; The base fabric is adhered to the wet reactive hot melt adhesive resin layer on the surface of the thermoplastic polyurethane film by the adhesive layer to obtain a water-resistant waterproof and moisture-permeable durable leather. The method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to claim 4, wherein the base fabric is selected from the group consisting of a knitted fabric, a plain woven fabric, a non-woven fabric, and a film. The method for manufacturing a water-resistant, waterproof, moisture-permeable and durable leather material according to item 4 of the patent application scope, wherein the base fabric is preheated by infrared heating, and the preheating temperature is 80 to 100 °C. The method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to claim 4, wherein the paste further comprises an isocyanate (NCO) bridging agent. The method for preparing a water-resistant waterproof, moisture-permeable and durable leather according to claim 7 of the patent application, wherein the solvent-type polyurethane is used in an amount of 100 PHR, the isocyanate bridging agent is used in an amount of 5 PHR, and the viscosity of the paste is It is 30,000 CPS. The method for preparing a water-resistant, waterproof, moisture-permeable and durable leather material according to item 4 of the patent application scope, wherein the liquid wet-type reactive hot melt adhesive resin has a viscosity of 9000 to 12000 CPS. The method for preparing a water-resistant, waterproof, moisture-permeable and durable leather material according to claim 4, wherein the liquid wet-type reactive hot-melt resin is softened by preheating by a solid wet reactive hot melt adhesive resin It is formed without pre-heating, the preheating temperature is 100~170°C, and the preheating time is 2~4 hours. The method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to claim 10, wherein the solid wet-type reactive hot-melt resin is used in an amount of 100 PHR. The method for producing a water-resistant, waterproof, moisture-permeable and durable leather according to item 4 of the patent application, wherein the thermoplastic polyurethane film is used in an amount of 100 PHR. A method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to the fourth aspect of the patent application, wherein the step of applying the liquid wet-type reactive hot melt adhesive resin to the surface of the thermoplastic polyurethane film is to use a doctor blade The coating method of a knife on roll or a knife on air. The method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to the fourth aspect of the patent application, wherein the base fabric is attached to the thermoplastic polyurethane film, and the bonding temperature is 80 to 100 ° C, and the bonding is performed. The distance is 0.08 mm and the bonding pressure is 1 kg/cm 2 . The method for producing a water-resistant, waterproof, moisture-permeable and durable leather material according to the fourth aspect of the patent application, wherein the step of attaching the base fabric to the thermoplastic polyurethane film further comprises standing for 24 to 48 hours. The bridge of the wet reactive hot melt adhesive resin is matured to obtain the water-resistant waterproof, moisture-permeable and durable leather.