JP2003246020A - Method for forming pattern layer on soft material surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form a prescribed pattern layer on the surface of a soft plastic material by using a hydraulic transfer means. <P>SOLUTION: The method comprises an undercoat coating process (A) to coat an undercoat material on the surface of a soft base material 1 which is made of two-component urethane denatured chlorinated polyolefin resin paint, a pattern layer forming process (B) to form a pattern layer 2 on the surface coated by undercoating materials using a hydraulic transfer means, a cleaning process (C) to clean the surface where the pattern layer 2 is formed using a washing means, etc., a drying process (D) to dry the surface using a prescribed drying means, and a clear layer forming process (E) to form a prescribed clear layer 3 on the surface of the pattern layer 2 by using a spray coating means. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a pattern layer on the surface of a soft plastic material made of an elastomer or the like, and in particular, the pattern layer is formed by using a hydraulic transfer method. The present invention relates to a method for forming a pattern layer on the surface of a soft material.

[0002]

2. Description of the Related Art A conventional plastic molded article having a base material made of a soft material, such as a vehicle interior trim, has a predetermined pattern in order to give a soft contact feeling (soft feeling). In addition to separately providing a skin material having a skeleton, a predetermined foam layer is provided between the skeleton material and the skin material in a state in which a skeleton material (strength member) is previously inserted inside the skin material. The one
Alternatively, a material in which a fabric is provided instead of the skin material can be used. By taking such steps, an interior trim or the like having a predetermined pattern on the surface and having a soft contact feeling (soft feeling) is formed.

[0003]

By the way, in the above-mentioned conventional method, in order to give a soft touch feeling (soft feeling) to the skin material, it is necessary to form the skin material having a special pattern. Have to go through complicated steps,
There is a problem that the manufacturing cost increases. Further, it is necessary to secure a predetermined amount of woven fabric having a specific design pattern in advance and place the woven fabric, which increases the inventory of parts. In order to solve such a problem, the formation of the pattern layer on the soft base material is performed by using a special hydraulic transfer means.
It is an object (problem) of the present invention to provide a method of forming a pattern layer on a soft material, which is adapted to the production of a large number of small quantities.

[0004]

In order to solve the above-mentioned problems, the following measures are taken in the present invention. That is, in the invention according to claim 1, an undercoat coating step of coating a soft base material with an undercoat material having flexibility on its surface side and having an adhesive function, and the undercoat material. Pattern layer forming step of forming a predetermined pattern layer on the coated surface side by a hydraulic transfer method, and cleaning the pattern layer surface side of the soft base material on which the pattern layer is formed by a predetermined means and the cleaning. A cleaning / drying step of subsequently drying by a predetermined means and a clear layer forming step of forming a clear layer on the surface of the washed and dried pattern layer by a predetermined means.

By adopting such steps, in the present invention, a soft feeling (soft feeling) at the time of contact
Thus, it becomes possible to efficiently form a plastic molded body having a predetermined pattern on its surface. In particular, according to the present invention, since the pattern layer is formed by the hydraulic transfer means, it becomes possible to easily manufacture a product having a different pattern for each product. Generally, the formation of the pattern layer on the plastic molded body by the hydraulic transfer method is mainly applied to a plastic molded body having a hard surface, that is, a hard plastic material. Therefore, if such a hydraulic pressure transfer method to the surface of a hard plastic molded product is applied to a soft plastic material as it is, when the surface of the soft plastic material is deformed after transfer, the pattern layer may be damaged due to the deformation. There is. On the other hand, in the case of the present invention, since a special undercoat material with high flexibility is provided between the soft plastic substrate and the pattern layer, the base material made of the soft material is used. When the surface of the material is slightly deformed, the undercoat material and the pattern layer are also deformed in response to this, whereby damage to the pattern layer or the like can be avoided.

Next, the invention according to claim 2 will be described. This one is also the same as the one described in claim 1 in the basic point. That is, in the present invention, the method for forming a pattern layer on the surface of a soft material according to claim 1,
The undercoat coating step was composed of a spray coating step using a two-component urethane-modified chlorinated polyolefin resin coating material. By taking such steps,
Also in the case of the present invention, as in the case of the above-mentioned claim 1, damage to the pattern layer or the like is suppressed. In particular, in the present invention, as the undercoat material, a two-pack type urethane-modified chlorinated polyolefin resin coating material set so as to retain a predetermined flexibility even after the pattern layer is adhered is adopted. As a result, the damage of the pattern layer can be effectively suppressed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to FIGS. The present embodiment relates to a method for forming a pattern layer on the surface of a soft material, and specifically, as shown in FIG. 1, the surface of a soft base material 1 having a foam layer inside thereof. An undercoat application step (A) of applying a predetermined undercoat material having flexibility and having an adhesive function, and a predetermined undercoating step using a hydraulic transfer means on the surface side on which the undercoat material is applied. Pattern layer forming step (B) for forming the pattern layer 2 and a washing step (C) for washing the surface on which the pattern layer 2 is formed with a washing means or the like, and the surface is thus washed. A drying step (D) of drying the formed state by a predetermined drying means, and a predetermined clear layer 3 is formed by a spray coating means on the surface of the pattern layer thus dried and purified. And a clear layer forming step (E) It is an basic.

In the above-mentioned basic process, the undercoat coating step (A) is a base material made of the above-mentioned soft plastic material using a spray coating means with a paint made of a two-pack type urethane-modified chlorinated polyolefin resin. 1 (see FIG. 2). Specifically, the above-mentioned coating material is applied to the surface of the soft plastic substrate 1 by a predetermined spray coating means in a thickness of about 10 to 40 µm. And
Apply the thus coated product at room temperature to 100
Allow to dry for about 10 to 60 minutes at a given temperature between 0 ° C. Then, in the state where the undercoat material is applied in this manner, the pattern layer 2 is provided on the surface thereof in the next pattern layer forming step (B) through the hydraulic transfer means. The hydraulic transfer means used here is a normal hydraulic transfer method. The base material (soft base material) 1 used in each of these steps is made of a plastic soft material. Specifically, those having a foamed layer inside and provided with a predetermined skin material on the surface side thereof, those made of an elastomer material such as TPO, or other soft materials. Examples include plastic materials. The soft base material 1 may be formed of a flat sheet-shaped material or the like in addition to the soft base material that has been molded into a predetermined shape in advance.

Next, from the surface side of the pattern layer 2 (see FIG. 2) thus transferred to the surface,
Water at 30 ° C to 45 ° C is flowed in a shower shape to remove PVA and the like adhering to the surface. That is, the cleaning step (C) is performed. Then, in this way, residual PV from the surface
After removing A and the like, a clean state is put into a predetermined drying oven or the like to dry the surface (step (D) in FIG. 1). In addition, the state of this drying oven is designed to be maintained in an atmosphere of 60 ° C. to 80 ° C. The work is held in the drying oven in such a state for about 5 to 40 minutes, and the pattern layer 2
Properly dry around.

In this manner, the surface of the pattern layer 2 (see FIG. 2) is washed and dried, and in the next clear layer forming step (E), the clear layer 3 is formed (clear coating). ) Is done. In the formation of the clear layer 3, that is, the clear coating step, in a urethane-based paint such as an acrylic urethane-based paint or a polyester urethane-based paint, silk protein having a particle diameter of 10 to 100 μm, acrylic beads, urethane beads, or the like is used. Is sprayed with a spray means in a state in which a predetermined amount is mixed. By applying spray coating on the basis of such urethane-based paint, the pattern layer 2
The surface of gives a soft touch to the person who touches it.

Next, in this way, the predetermined clear layer 3 is formed.
The paint applied to form (see FIG. 2) is placed in a predetermined drying oven or the like and subjected to baking treatment.
That is, in the baking step shown in FIG. 1, the clear layer 3 is placed in an atmosphere of about 50 ° C. to 110 ° C. for 20 minutes.
Leave to dry for min-80 min. As a result, FIG.
As shown in Fig. 1, a plastic product having a predetermined pattern layer 2 on the surface of the soft base material 1 and a clear layer 3 giving a soft feeling on the surface side can be efficiently formed. Become. In addition, in the product thus formed, the base material as a base is made of a soft material, and the adhesive material serving to attach the pattern layer 2 to the soft plastic base material 1 has flexibility. Since the two-component urethane-modified chlorinated polyolefin resin coating is used, even if the substrate 1 is elastically deformed, the pattern layer 2 may be deformed following the deformation and may be damaged. Absent. Further, since the clear layer 3 (see FIG. 2) provided on the surface of the pattern layer 2 is formed on the basis of urethane-based paint, the clear layer 3 is not easily scratched, and the pattern layer 2 is excellently protected. It has the characteristic that

[0012]

According to the present invention, a method for forming a pattern layer on a soft material is based on a soft base material, on the surface side of which an undercoat material having flexibility and an adhesive function is provided. An undercoat coating step of applying, a pattern layer forming step of forming a predetermined pattern layer on the surface side of the undercoat material coated by a hydraulic transfer method, and a pattern layer surface of a soft base material on which the pattern layer is formed A cleaning / drying process in which the side is cleaned by a predetermined means and is dried by a predetermined means after the cleaning, and a clear layer is formed by a predetermined means on the surface of the washed and dried pattern layer. Since it consists of the process and step, it feels soft when touching (soft feeling)
It has become possible to efficiently form a plastic molded body having a predetermined pattern on its surface. Particularly, in the present invention, since the pattern layer is formed by the hydraulic transfer means, it is possible to easily manufacture a product having a different pattern for each product. . Further, in the case of the present invention, since a special undercoat material having high flexibility is provided between the soft base material and the pattern layer, the surface of the base material made of the soft material is minute. Even if the pattern is deformed, the undercoat material and the pattern layer are also deformed accordingly, and as a result, damage to the pattern layer can be avoided.

Further, since the undercoat coating step is constituted by a spray coating step using a two-pack type urethane-modified chlorinated polyolefin resin coating, damage to the pattern layer and the like can be suppressed and such undercoat Since the coating process is performed by the spray coating means, the undercoat coating work can be efficiently performed. In particular, in the present invention, a two-component urethane-modified chlorinated polyolefin resin coating set to retain a predetermined flexibility after the pattern layer is adhered to the undercoat material is adopted. Therefore, the damage of the pattern layer is effectively suppressed.

[Brief description of drawings]

FIG. 1 is a process explanatory view showing the entire content of the present invention.

FIG. 2 is a cross-sectional view showing the overall configuration of a plastic molded product formed (manufactured) by the present invention.

[Explanation of symbols]

1 Soft base material 2 pattern layers 3 clear layer

Continued front page    F term (reference) 3D023 BA01 BB01 BD02 BE04 BE06                 4D075 AA01 AB23 AC41 AE16 BB24Y                       BB65Y CB06 CB11 DA23                       DA25 DB35 DC13 EA07 EA27                       EA41 EA43 EB13 EB22 EB35                       EB38                 4F055 AA21 BA19 DA02 DA08 DA11                       FA15 GA32 GA40                 4F100 AK10C AK51C AL06C AT00A                       BA03 BA07 BA10A CC00C                       DJ01 EC042 EH462 EH612                       EJ483 EJ853 EJ863 GB08                       GB33 HB00B JK13A

Claims (2)

[Claims] 1. An undercoat coating step of coating a soft base material with an undercoat material having flexibility and an adhesive function on the surface side, and a surface side coated with the undercoat material. A pattern layer forming step of forming a predetermined pattern layer on the surface by a hydraulic transfer method, and cleaning the pattern layer surface side of the soft base material on which the pattern layer is formed by a predetermined means, and after the cleaning, by a predetermined means. A cleaning / drying step of drying, and a clear layer forming step of forming a clear layer on the surface of the washed and dried pattern layer by a predetermined means. Forming method. 2. The method for forming a pattern layer on the surface of a soft material according to claim 1, wherein the undercoat coating step comprises a spray coating step using a two-pack urethane modified chlorinated polyolefin resin coating material. A method of forming a pattern layer on the surface of a soft material, which is characterized by the above.