JPS61167475A - Method for flocking three-dimensional material - Google Patents

Abstract

PURPOSE:To obtain a flocked product having an excellent feel in a short time by coating an adhesive capable of foaming on the surface of a three-dimensional material to form a foamed body layer, then coating an adhesive for flocking on the surface, and flocking pile thereon. CONSTITUTION:An adhesive capable of foaming is coated on the surface of a three-dimensional material 1, the adhesive is foamed to form a foamed body layer 3, an adhesive 4 for flocking is formed on the foamed body layer 3 in thickness enough to keep the softness of the foamed body layer 3, and pile 5 is dropped and flocked on the surface of the adhesive before the adhesive is dried. Consequently, a flocked product having an excellent feel can be obtained in a short time without being restricted by the shape of the flocked product.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a hair transplantation method suitable for transplanting hair onto the surface of a solid three-dimensional object.

[Conventional technology]

Conventionally, when flocking piles onto the surface of a solid three-dimensional object molded from polypropylene resin, ABS resin, etc., the flocking method shown in the cross-sectional views of FIGS. 5 and 6 has been widely used. It has been implemented.

In FIG. 5, reference numeral 51 denotes a three-dimensional object molded from polypropylene resin, phenol resin, ABS resin, etc. This three-dimensional object 51 is formed into an approximately inverted U-shape, and the entire structure is hard. ing.

When flocking hair to this three-dimensional object 51, after applying an adhesive 52 for flocking to the entire surface of the three-dimensional object 51, a pile 53 made of short fibers etc. is applied to the surface of this adhesive 52.
A product 50 is obtained by electrically or mechanically flocking the fibers.

However, the flocked product 5° obtained in this way does not feel soft to the touch due to the hard surface of the three-dimensional object 51, and does not feel as soft when touched with the fingers, compared to similar products to which fabric lifters such as woven or knitted fabrics are attached. (not shown) had considerably inferior defects.

Therefore, recently, a flocked product 60 as shown in the cross-sectional view of FIG. 6 has been developed.

In FIG. 6, reference numeral 61 denotes a three-dimensional object molded from polypropylene resin, phenol resin, ABS resin, etc. This three-dimensional object 61 is formed into a substantially inverted U-shape, and its entirety is hard. ing.

When flocking the three-dimensional object 61, the adhesive 62 is applied to the entire surface of the three-dimensional object 61, and after the organic solvent contained in the adhesive 62 is evaporated, the adhesive 62 is A batting material 63 having an air-impermeable layer on the front and back surfaces of a foam such as a polyethylene foam sheet or a polypropylene foam sheet is adhered to the entire surface by vacuum forming or the like. After trimming the portion of the bat material 63 protruding from the three-dimensional object 61, a flocking adhesive 64 is applied to the entire surface of the bat material 63. Thereafter, a pile 65 made of short fibers or the like is electrically or mechanically flocked onto the surface of this adhesive 64 to form a product 60.

[Problems to be Solved by the Invention] However, the flocked product 60 obtained in this way has a good feel when touched with fingers due to the flexibility of the batt material 63 bonded onto the three-dimensional object 61. However, after applying the adhesive 62 on the three-dimensional object 61, the batt material 63 must be adhered, and the batt material 63 must be trimmed, which not only requires a lot of time for flocking. Since the method involves adhering the batt material 63 to the surface of the three-dimensional object 61, there is a problem that the shape of the flocked product 60 is restricted.

Therefore, this invention was made to solve the above-mentioned problems, and after applying a foamable adhesive to the surface of a three-dimensional object to form a foam layer, an adhesive for flocking is applied to the surface of the foam layer. To obtain a flocked product with good feel in a short time without restricting the shape of the flocked product by applying an agent and flocking the pile.

[Means for solving problems]

That is, in the hair-planting method for a three-dimensional object according to the present invention, a foamable adhesive is applied to the surface of the three-dimensional object, and the adhesive is foamed to form a foam layer on the surface of the three-dimensional object. After that, a flocking adhesive is applied to the surface of this foam layer to a thickness that can maintain the flexibility of the foam layer, and a pile is applied to the surface of this adhesive while the adhesive is not hardened. It was designed to be used for hair transplantation.

As the foamable adhesive applied to the surface of the three-dimensional object, any foamable adhesive can be used. Examples include two-component urethane adhesives containing foaming agents and the like. In addition, it is desirable to apply the foamable adhesive in a range of 200 to 400 g/rd; if it is less than 200 g/rd, it will be difficult to obtain good flexibility;
Not only does the above-mentioned method not improve the flexibility even though it is applied,
Costs will rise. Furthermore, the thickness of the adhesive after foaming is 2
A range of from 4 fi to 4 fi is suitable; if it is less than 2 fi, it will not feel good when touched with a finger, and if it is more than 4 fi, the product will be likely to be defective after hair transplantation.

Furthermore, as the adhesive for flocking applied to the surface of the foamable adhesive, adhesives commonly used for flocking can be used as they are, such as acrylic emulsion, urethane, etc. Examples include non-foaming adhesives.

Also, the amount of glue applied for flocking is 100 to 300
It is desirable to apply the adhesive in a range of g/rrl, and in particular, it is preferable to apply the same amount or less than that of the foamable adhesive in order to obtain a good feel. As the pile material, the pile materials commonly used in flocking can be used as they are, such as short fibers, fiber waste,
Examples include leather scraps and synthetic resin fibers. Suitable pile materials are a few deniers and a length of about 0.5 to 5 strands, and the flocking method is different from the commonly used electrical flocking method or mechanical flocking method. It can be implemented.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the hair transplantation method for a three-dimensional object according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 and FIG. 4 are schematic cross-sectional views illustrating the hair transplantation method for three-dimensional objects according to the present invention.

In Figures 1 to 4, reference numeral 1 denotes a three-dimensional object molded from polypropylene resin, phenol resin, ABS resin, etc., and this three-dimensional object 1 is formed into a substantially inverted U-shape, and its entire shape is is formed hard.

When flocking the three-dimensional object 1, as shown in FIG. Spray uniformly from gun Ma to a coating amount of 200 to 300 g/rd. The thickness of the two-component urethane adhesive 2 at that time was approximately 0.2 to 0.3N, and the density was 1.0 to 1.1 g/ctA.

After spraying the two-component urethane adhesive 2, the adhesive is left for several seconds to several minutes. During this time, the two-component urethane adhesive 2 hardens while foaming as shown in FIG. 2, forming a foam layer 3 having a thin skin layer over the entire surface of the three-dimensional object 1.

The thickness of the foam layer 3 at that time was about 2 to 3 thick.

Next, as shown in Fig. 3, an acrylic emulsion-based non-foaming adhesive 4, which is an adhesive for flocking, is applied to the entire surface of the foam layer 3 using a spray gun Mb in an amount of approximately 200 g/rd. Spray evenly. The thickness of the non-foamed adhesive 4 at that time was about 0.2 fl.

Next, while the surface of the non-foaming adhesive 4 has not hardened, a pile 5 made of nylon fibers of 3 denier and 1.0 mm long is placed on the surface of the non-foaming adhesive 4, as shown in FIG. The hair is transplanted by dropping it on the The flocking device used in this case can be either an electric flocking device or a mechanical flocking device which is commonly used, and there is no need to set special conditions for the flocking.

After the flocking is completed, the three-dimensional object 1 is carried into a drying oven, the non-foaming adhesive 4 is cured, and the flocked pile 5 is
is fixed to the floor surface of the non-foaming adhesive 4 in an anchored state.

[Effect of idea]

As explained above, in the method for flocking a three-dimensional object according to the present invention, a foamable adhesive is applied to the surface of the three-dimensional object to form a foam layer, and then an adhesive for flocking is applied to the surface of the object. Since the pile is flocked by applying the agent, it is possible to obtain a flocked product with a good feel due to the foam layer formed on the surface of the three-dimensional object.

Furthermore, in the hair transplantation method for a three-dimensional object according to the present invention,
The effect is that a flocked product with a good feel can be obtained in a short time simply by applying a foamable adhesive.

Furthermore, in the hair transplantation method for a three-dimensional object according to the present invention,
Since a flocked product can be obtained by applying a foamable adhesive, it is possible to easily obtain a flocked product without being restricted by the shape of the flocked product.

[Brief explanation of drawings]

FIGS. 1 to 4 are schematic sectional views illustrating a method for transplanting hair into a three-dimensional object according to the present invention. FIG. 5 and FIG. 6 are cross-sectional views of a hair transplant product illustrating a conventional hair transplant method. 1. ---------- Three-dimensional object 2 --- Foamable adhesive 3 ------- 1. Foam layer 4 --- For flocking Adhesive 5・------Pile Applicant Toyota Motor Corporation Fig. 1 Mh Fig. 3 Fig. 2 → Fig. 4

Claims (1)

[Claims] By applying a foamable adhesive to the surface of a three-dimensional object,
After foaming the adhesive to form a foam layer, a flocking adhesive is applied to the surface of the foam layer to a thickness that can maintain the flexibility of the foam layer, and the adhesive is 1. A method for flocking a three-dimensional object, comprising dropping piles onto the surface of the object while the adhesive has not yet hardened.