KR20040047995A - Leather and polyvinyl chloride combination - Google Patents

Abstract

PURPOSE: A method of impregnating polyvinyl chloride to natural leather is provided to improve processability and workability, so as to conduct an instant adhesive process by using various methods such as high frequency method and the like, while making three-dimensional formation and complete water-proofness possible. CONSTITUTION: The method of impregnating polyvinyl chloride to natural leather comprises the steps of permeating a polyvinyl chloride polymer liquid(15) into the fiber layer(18) of a processed natural leather by applying the polyvinyl chloride polymer liquid to the whole part or a certain portion of the leather, with a coating device which uses a roller having uneven surface, drying, aging and fixing the leather coated with the polymer liquid, wherein the processed leather is prepared by processing, drying and coating natural leather, and the polyvinyl chloride polymer liquid is prepared by polymerizing polyvinyl chloride together with additives.

Description

Synthesis of leather and polyvinyl chloride {Leather and polyvinyl chloride combination}

The present invention relates to a method of penetrating and forming a polyvinyl chloride polymer by penetrating into a fiber layer of a natural leather fabric state using a resin coating method using a water support liquid mixed with a material such as resin and DO P. It is a technique for synthesizing a polymer of leather and polyvinyl chloride by applying it to the surface or the back of all or part of the natural leather to dry aging.

Generally, on the woven fabric using polyester, acrylic, etc., p. v. c. is foamed and bonded.

The temperature in the oven to heat the working environment is between 150 and 320 degrees Celsius, and the application time is aged between 5 and 20 minutes.

The temperature required for molecular transport of p.v.c. is defined as 280 degrees or 300 degrees absolute.

In other words, all the temperatures and times applied to the fabrics were tested and the results were not suitable for leather.

Coating when the temperature of heat is kept higher than 100 or 150 degrees in the state of natural leather

Since the quality of product value cannot be maintained due to the change of state, shrinkage of film, and deterioration of physical properties, it has been considered impossible in reality and theoretically.

There have been cases of molding injection of leather and heavy compounds using mold mold using some other materials such as polypropylene, polyamide, polycarbonate, acrylonitrile and arc rate. Questions have been raised about deformation prevention.

Natural leather has different shapes according to the appearance and size of animals and forms one sheet individually, and is used for different uses according to different fiber tissues and processing conditions.

In addition, it recognizes different characteristics, coating methods, and variability of chemical types, and keeps the texture and feel of leather in the state of processing drying or coating of various leather fabrics. There is no damage and it is a method of penetrating, ripening and fixing polyvinyl chloride polymer.

1 is a cross-sectional view of the distribution diagram of leather and polyvinyl chloride

Figure 2 is a coating apparatus of polyvinyl chloride on the leather surface

Figure 3 is a device for solidifying the liquid polymer applied to the leather surface

<Description of the symbols for the main parts of the drawings>

1: special three-dimensional irregularities Laura

2: chemical injection holder

3: leather release support

4: Leather input direction

5: Cone bare belt for leather support

6: compressed rubber Laura

7: Cone bare belt for leather removal

8: blower

9: infrared heater

10: inlet

11: aluminum panel cone bare belt

12: aluminum heat reflective cover

13: Laura

14 cooling fan

15: polyvinyl chloride penetration coating

16: light film layer (top coat)

17 pigment color layer

18: leather fiber tissue layer

All existing natural leathers are processed and dried or coated on leather fabrics (leathers such as bovines, horses, hogs, deer, goats, reptiles, birds, fishes, etc.). Polyvinyl chloride materials and DOP The additives are polymerized at an appropriate ratio to prepare liquid stock polymers in the liquid state, and then applied to the drawing or the whole part using a special three-dimensional uneven roller type coating machine, and the amount of polymer is adjusted according to the use of leather. Apply.

In the process of moving the coated leather fabric using a conveyor belt, it adjusts the penetration of the liquid solution into the proper depth by using time and speed, and simultaneously performs drying, maturing and fixing through the heat generating device.

Hereinafter, described in detail by the accompanying drawings as follows.

1 is a cross-sectional view of a fibrous structure of natural leather.

When the liquid polymer is added to the apparatus 2 of FIG. 2 to complete the coating, the liquid is automatically infiltrated on the principle that the stock is naturally absorbed by capillary action in preparation for the thickness and time of the stock.

At this time, Laura's pattern requires a special three-dimensional unevenness to control the amount of the solution, and the pattern must meet the area where the solution can come into contact with the surface of the leather, and the continuous application and distribution of the solution is easy and the overall consistency must be maintained. do.

In addition, a rubber called Laura was used on the lower side to prevent the dropping and agglomeration of the stock solution and to facilitate adhesion to the stock solution.

In addition, in order to prevent wrinkles and work efficiency of the leather applied to the machinery, it was desirable to install a detachable conveyor additionally to prevent contamination and defects in the double cone bear facility and the applied leather.

The process of dry aging the finished leather is very carefully handled.

Infrared heaters were used to characterize polymers requiring absolute temperatures between 150 and 250 degrees. The heat generated by the infrared heater adjusts the temperature to the leather 180 degrees, is continuously measured and maintained by the infrared thermometer, and the time set to 5 minutes for the leather passing through the cone bare belt, to the part that penetrates the leather fiber. All ripened.

When the finished leather was cut and the cross-sectional view was observed, it was also identified as the canal.

Experiment 1.

A 2mm thick polymer was applied to the 2.0m / m or 1.8m / m thick leather surface of the shoe, and the cone bare device was moved in a thermal infrared oven for 3 minutes.The result of the observation was that it was dried and matured without any damage to the leather. The separation was attempted but the separation was not possible. As a result of incision, the cross section was observed and it was confirmed that the penetration was fixed to a thickness of about 0.6m / m.

Experiment 2.

The polymer was applied on a 0.6m / m or 0.8m / m thick garment leather surface with a thickness of 1m / m, and the corn-bearing device was moved in a thermal infrared oven for 2 minutes. This was also attempted to separate the leather and polymer, but could not be separated and confirmed that the infiltration after penetration.

The present invention maintains the natural state of natural leather and penetrates polyvinyl chloride

By doing so, the process of sewing or applying the adhesive can be omitted, and the high frequency device can be used to bond the leather fabric and the leather fabric or materials of various materials.

The post-processing process can be omitted on different work processes, and straight lines, curves, diagonal lines, circles, intersection lines, dotted lines, solid processing, partial bonding, flat bonding, shapes, wrinkles, pattern forming, engraving, embossing, etc. in seconds. Work can be completed and at the same time, by performing three-dimensional molding, it is possible to obtain the effect of quickness, stability, economy, precision, standard, automatic production, and waterproof, windproof and dustproof.

In particular, 100% of electric conduction is cut off to produce a differentiated design from the production of special function products. It enhances the tensile strength of leather, maintains the life of semi-permanent leather, and has the ripple effect on excellent functionality, quality improvement and economic efficiency. And the impact on the industry as a whole is unimaginable.

<Example of new product development>

1. leather life jacket.

1. Leather air mattress.

1. waterproof ski shoes, waterproof hiking boots, waterproof gloves etc.

1. Waterproof handbag, waterproof bag, waterproof case etc.

1. Leather shockproof clothing.

Claims (3)

Synthetic method of penetrating dry ripening of polyvinyl chloride in natural leather fiber tissue. Infrared heat heating cone bare device. Application method using specially designed three-dimensional uneven shape roller device.