JPH0551878A - Method for applying pattern to surface of flexible material such as artificial leather - Google Patents

Abstract

PURPOSE:To easily apply a pattern to the surface of a flexible material, e.g. man-made leather such as artificial leather or synthetic leather or cloth to be used for shoes, bag, coat, etc., thereby enabling the production of various kinds of products in small quantities. CONSTITUTION:A pattern paper 4' having a specific form is produced e.g. by punching a pattern base paper consisting of a releasing paper 5 and a pattern film 6 made of a thermoplastic synthetic resin and applied to a surface of the releasing paper 5. The pattern paper 4' is applied to the surface of a vamp 2 made of artificial leather in a state to contact the pattern film 6 with the artificial leather. After hot-pressing the pattern, the releasing paper 5 is peeled off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention attaches a predetermined pattern (figure or pattern) to the surface of a flexible body such as artificial leather or cloth such as artificial leather or synthetic leather used for shoes, bags and coats. It is about how to do.

[0002]

2. Description of the Related Art Conventionally, for example, artificial leather such as artificial leather or synthetic leather used for shoes, bags, coats, etc. has various shapes and patterns (patterns) on the surface thereof. As a method of applying, there are printing methods such as offset printing, gravure printing, textile printing, screen printing, and embossing such as hot pressing and high frequency heating.

In the case of the printing method, even a plate (relief plate, intaglio plate, gravure, screen plate) used in a flat-press printing machine or a pressure-printing machine, which is said to be suitable for relatively small-quantity production, can be printed on this plate. It is usual to form a large number of identical patterns (patterns), and the plate making cost for that is expensive, and the printing machine is also expensive. On the other hand, in the mold pressing method, a roll mold and a pressing mold having a predetermined pattern must be manufactured, and the mold manufacturing cost therefor is expensive. Therefore, any of the above-mentioned conventional patterning methods was not suitable for the production of small quantities of various kinds.

Further, there is also a method of attaching a design to the surface of artificial leather or the like by using a transfer paper.
It was unsuitable for small-quantity production, because it was necessary to select a necessary design or the like from a large number of color transfer papers produced in advance. The present invention aims to eliminate these drawbacks of the prior art, and provides a method of attaching an arbitrary pattern to the surface of artificial leather or the like.

[0005]

Means for Solving the Problems In order to achieve the above object, a method of patterning a surface of a flexible body such as artificial leather of the present invention is a release paper and a thermoplastic material stretched on one side of the release paper. A pattern paper consisting of a synthetic resin pattern film and formed into a predetermined pattern by punching, etc. was laminated so that the pattern film surface abuts the surface of a flexible body such as cloth or artificial leather. In this state, heating and / or pressure is applied, and then the release paper is peeled off.

[0006]

EXAMPLES Next, examples of embodying the present invention will be described. The upper 2 of the women's shoe 1 shown in FIG. 1 is made of artificial leather or cloth such as synthetic leather or artificial leather, and the upper 2 is a flexible body having flexibility so that it fits on the foot. The patterns 3, 3 and 3 are attached to the surface of the upper 2 by a patterning processing method described later. Synthetic leather, which is a type of artificial leather, is a base cloth such as woven cloth, knitted cloth, or non-woven cloth, in which a surface layer corresponding to the surface layer of leather is made of polyurethane or the like.
The artificial leather has a texture structure similar to that of leather and has a fiber layer having a random three-dimensional cubic structure and a surface layer coated with a polyurethane resin having continuous pores corresponding to the chin surface layer of leather. The surface of these artificial leathers is treated with embossing wrinkles or a smooth glossy surface so as to have the same feel and luster as the surface of natural leathers.

Next, a designing method will be described.
The pattern base paper 4 shown in FIG. 2 is made of a polyurethane resin having a thickness of about 50 to 100 microns (μm) on the surface of a release paper 5 formed by applying a release agent such as silicone to one side of heat resistant paper. This is a structure in which a design film 6 made of a thermoplastic synthetic resin is stretched by coating or the like. The material of the pattern film 6 made of the thermoplastic thermoplastic resin having flexibility is the same as the material of the surface layer (cinnamon surface layer) of the artificial leather which is the upper 2 in order to improve the adhesion of the pattern. Preferably.

FIG. 2 (a) shows that one side of the release paper 5 on which the design film 6 is stretched has a smooth surface.
(B) is an example in which a fine wrinkle 7 is formed by embossing on one surface of the release paper 5 on which the design film 6 is stretched so as to resemble the surface of natural leather. Therefore, in this case, the wrinkle pattern is attached to at least one surface of the pattern film 6 (the surface facing the one surface of the release paper 5).

When the flexible body such as the upper 2 and the design film 6 are made of different materials, they are bonded to the surface of the design film 6 as shown in FIGS. 2 (a) and 2 (c). By pre-applying the agent 8 in a layered manner or by applying the adhesive 8 immediately before the pressure-bonding step, the adhesive performance between the flexible body and the pattern film 6 is improved in the pressure-bonding step described later, and the pattern Peeling defects can be prevented. The adhesive 8 is a heat-activatable adhesive such as a polyurethane resin, a thermoplastic adhesive such as polyvinyl acetate or polyvinyl butyral, an elastomer adhesive such as butadiene acrylonitrile rubber, or the like, and the material of the pattern film and the material of the flexible body. Various substances may be used depending on the compatibility with.

The colors (colors) of the design film 6 can be various in order to enhance the selection of design designs. Figure 3
Shows an example of a method and means for forming a design paper 4'having a predetermined shape from the design base paper 4 described above. The design base paper 4 having a large vertical and horizontal dimensions is placed on a workbench 10 such as wood, while the plane shape is predetermined. Punching blade 1 formed in an annular shape so as to have the pattern
1 is fixed to the support frame 12, and the tool board 13 is attached to the workbench 10
Move up and down with respect to. As a result, the required number of pattern papers 4'having a predetermined shape can be punched and formed. The design may be punched out by placing the knife board 13 on the design base paper 4 on the workbench 10 and hitting it with a hammer from above. When the required number of pattern papers 4'is even smaller, a predetermined pattern may be drawn on the release paper 5 side of the pattern base paper 4 and cut out with a cutter knife or scissors to form the predetermined pattern paper 4 '. ..

4 to 7 show a step of designing a pattern on the surface of the upper 2. The upper 2 is placed on the workbench 14 and punched into a predetermined planar design as described above. The design paper 4'is placed on the upper part 2 at the place where the design is desired (see FIG. 4). At this time, the design film 6 on the design paper 4'is placed so as to contact the surface of the upper 2, and the press board 1 with the heater 16 is placed on the design paper 4 '.
By pressing with 5, the design film 6 is pressed onto the surface of the upper 2 (see FIG. 5).

The heating temperature, the pressing force and the pressing time are set to predetermined conditions depending on the material of the pattern film 6 and the surface layer of the upper 2 and the like. For example, in the case of polyurethane resin, considering various conditions such as the thickness of the release paper 5, the temperature is set to about 60 to 200 degrees Celsius, and the pressure is 100 to 2000 (g / cm ² ) for about 10 seconds to 2 minutes. Pressurize. After the design film 6 is pressure-bonded to the surface of the upper 2 in this way, and only the release paper 5 is peeled off as shown in FIG. 6, predetermined patterns 3a, 3b, 3c, etc. can be drawn on the surface of the upper 2. (See FIG. 7).

There is also a method of high-frequency induction heating as the method of thermocompression bonding. By applying a high frequency to the design film 6 with the upper 2 and the design paper 4 ′ sandwiched between the metal pressure plate and the support plate, heat is generated inside the design film 6 and the upper 2 and the pattern film 6 can be evenly and efficiently adhered. 8 and 9
In the embodiment, the material of the surface layer of the upper 2 and the film for pattern 6 are used.
When the material is different from the material of the upper case 2 or when the upper 2 is a fibrous material such as cloth, the adhesive 8 is applied in advance to the surface of the pattern film 6 in order to ensure the adhesion (compression bonding) of the design and prevent the design from coming off. An object 8 is pressure-bonded by heating and / or pressure, or an adhesive 8 is applied to the surface of the design film 6 of the design paper 4'after punching, and then it is placed on the surface of the upper 2 and then heated and / or applied. The pressure-bonding step is performed. Depending on the combination of the material for the design film 6 and the material of the upper 2 and the type of the adhesive 8, the adhesion between the design film 6 and the surface layer of the upper 2 can be completed only by pressing at room temperature without heating. In some cases.

After the design is applied, the design film 6 does not peel off even if the upper 2 is bent as shown in FIGS. 7 and 9. In particular, wrinkles on the design film 6
With the mark, the wrinkles serve as an expansion and contraction buffering portion when the design film 6 is curved, and it is possible to prevent inconveniences such as part of the design being broken or floating. The present invention is not limited to artificial leather, it is possible to put any predetermined pattern on the surface of a flexible body such as cloth, the applied article is not limited to shoes,
It can also be applied to bags, coats, book covers and the like.

[0015]

According to the present invention, a pattern paper comprising a release paper and a thermoplastic synthetic resin pattern film stretched on one side of the release paper, and formed into a predetermined pattern by punching or the like. Since the film surface for design is heated and / or pressed in a state of being overlapped so as to contact the surface of a flexible body such as cloth or artificial leather, and then the method of peeling off the release paper is adopted,
Compared with the conventional method of attaching a design (pattern), a small amount of various types of designs can be easily formed. In addition, since the machinery for that purpose can be a simple device, it is possible to attach a pattern at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment in which a shoe is patterned.

FIG. 2 (a) is an example in which a smooth pattern film is stretched on release paper, and FIG. 2 (b) is an example in which a pattern film is stretched on release paper having wrinkles on the surface. And
(C) is an example in which an adhesive was applied to the surface of the design film.

FIG. 3 is an explanatory view showing a step of punching out a design paper from the design base paper.

FIG. 4 is a perspective view showing a positional relationship between the upper and the design film.

FIG. 5 is an explanatory diagram showing a heating / pressurizing method.

FIG. 6 is an explanatory diagram showing a step of peeling off release paper.

FIG. 7 is a sectional view showing a state in which a design film is pressure-bonded to the surface of upper.

FIG. 8 is an explanatory diagram showing a step of peeling off release paper of another example.

FIG. 9 is a cross-sectional view of a state in which a design film coated with an adhesive is pressure-bonded to the surface of the upper.

[Explanation of symbols]

 1 shoe 2 upper 3 design 4 design base paper 4'design paper 5 release paper 6 film for design 7 wrinkle 8 adhesive 10,14 worktable 11 punching blade 13 cutlery board 15 press board 16 heater

Claims (1)

[Claims] 1. A design paper comprising a release paper and a design film made of a thermoplastic synthetic resin stretched on one side of the release paper, the design paper being formed into a predetermined design by punching or the like. To the surface of a flexible body such as artificial leather or the like, which is characterized by heating and / or pressing in a state of overlapping so as to contact the surface of a flexible body such as cloth or artificial leather, and then peeling off the release paper. Designing method