JPS5879569A - Painting method by masking - Google Patents

Abstract

PURPOSE:To permit precise masking accurately and quickly by melt-sticking metallic foils for masking having adhesive layers of a low m.p. on places to be painted with a press under prescribed pressure and stripping the foils after painting through masking. CONSTITUTION:A foil 3 for masking provided with a release layer 5 and a base layer 4 on a metallic foil 6 and provided with an adhesive layer of a low m.p. (a compd. of ethylene-vinyl choride-vinyl acetate) under the foil 6 is placed on the nonpainting place 9 of a substrate 8 and is heated and pressurized for a micro-time of a second unit under low pressure of about a few hundreds kg/cm<2> unit by means of a plunger die 1. After the foil 3 is melt-stuck to the place 9, the layer 4 and the layer 5 are removed to leave the masking foil 3' consisting of the foil 6 and the layer 7, then painting is applied through the masking. After the painting, a stripping tape 11 having tack higher than that of the layer 7 is pressed to the foil 3' by means of a press roller 12, whereby the foil 3' is stripped off.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a masking coating method, and more particularly to a masking coating method for a workpiece coated with plastics at-+ri plastics 1.

Conventionally, masking and painting of this oak was carried out by fitting a mask made from a mold into the non-F/11 parts of the iron workpiece, and removing the mold after painting. However, the amount of non-containing equipment differs depending on the object to be coated, and the cost of using an expensive mold for the stakes is considerable.Also, it takes a long time to make the mold. Also, setting the stiffness on the object to be painted is no longer time-consuming, and even today when painting is done in lots, the masking process becomes a bottleneck and robotization has become a reality. I can't feel it. There 1
Adhesive tape 1 It is considered to seal non-painted places.Also, when masking and painting extremely small, ultra-fine non-painted places such as those used in audio equipment, high-precision masking [(seal cutting, positioning) Currently, there are 31 methods that are not practical due to technical and cost considerations.

1 This invention uses a low melting point plastic for adhesion*, and also heats the foil having a release layer to about the melting point of the adhesive layer resin to achieve the desired packaging of the object to be coated.
1 large push type at minimum time of seconds 1'& IJ and several hundred 1
The above foil is welded to the object to be coated by pressing with a low pressure of a false true unit, and the above foil is peeled off from the release layer after m mounting. From this, a simple dynamic process called stamping f') + q masking on non-m mounted parts is performed. By doing this, we can perform large quantities of masking accurately and quickly, and by making all mold charges into annual bonds and greatly reducing labor costs, we contribute to cost reductions. The purpose is to give a beautiful finishing touch to the product.

To explain based on the embodiment shown in the drawings, 11) is a press mold 1 having a built-in heater (not shown). Bottom stamp 1
21 is formed to match the shape of the non-painted area.

+31fl masking foil 11m As shown in the figure, the base layer (4) made of film is coated with a release layer 15), gold and metal foil layer (
6), the adhesive layer (7) is successively laminated in layers. It's so thick! Approximately 3μ"5tIb. Release layer (5) and metal foil layer (
6) may be provided, but it is not necessary to provide the IIIJK colored layer. The gold matrix layer (6) in this example has 1f of glue, and is made of an adhesive layer (71rj) of low melting point plastic powder adhered by vapor deposition. melting point 1910) is used.+
8) Painted object made of Fi plastics "r!, non-mW
& Threshold 1 (9) with foil (31' pressed 1 and 4
ing. Therefore, for welding, set the press die (1) at a temperature around the melting point of the adhesive layer resin (taking into account transmission loss, set it at a slightly higher temperature)
After heating at K, press pressure of about 600 kg/C-11~i
This is done by suppressing the signal by 1 for about s seconds. Paint after separating the welding booster type +13, and after painting, add foil +31/'off-release layer (5)
Once removed, a masking coating is applied.

This departure F! In A, since the melting point of the adhesive layer (7) of the masking foil 3) is low, the pressing die Ill heated to about the melting point is pressed for a very short time of seconds and with a low pressure of several hundred kg/c+a''! Just by doing this, the adhesive layer melts and adheres to the object to be coated. During the 11 hours the pressure is extremely low, the object to be coated itself does not melt, so there is no damage to the object to be coated (8). ? be. There is one piece of foil (3) that is attached to the object to be painted (8) with a decorative edge on the mask at the non-convergence point (9).

Therefore, according to the present invention, there is no damage to the object to be coated.
It is possible to perform masking in large quantities accurately, quickly, and cheaply, and has the effect of beautifully removing damaged products.

[Brief explanation of the drawing]

Figure 1: Schematic side view showing an embodiment of the method of the present invention: Masking foil, C4)... Base 11, +51... Peeling layer,
(6)...Metal foil layer, (7)...Adhesive layer. (8)...Object to be painted, (9)...Unpainted part Patent applicant: Satoshi Tate Male Patent Attorney: Tadashi Yasuhara 2nd party
Masaru Asano Miku
Yasuhara Justice Procedures Amendment Letter Showfu” J4/February, J Japan Patent Office Chief Hibiki Shimada - Indication of the case 1982 Patent Application No. 1F6F7C No. 2, Title of the invention Masking coating method 3, Relationship with the case of the person making the amendment Patent issuer 1 4, Agent 5 Date of amendment order 1 Issue 6 Number of inventions increased by amendment 7, Subject of amendment 111 Specification page I, line S Correct the lines from line 13 to line 13 as follows. The above foil is welded to the object to be coated by applying a press die heated to the melting point of the adhesive layer resin at 1irIILK in a very short time of seconds and at a low pressure of several hundreds of inches, and after painting, the foil is A masking painting method characterized by peeling. ”+21ujjz line “It also has a release layer.”
Correct it to "did". (3) "From the release layer" on page 3, line C, is divided by Al1. (4) Correct "state" in the 15th line of Jij to "normal". +51 Page 3, line 20 to t*/6th [/9 'OJt
Correct it as "lθ9 aO". +61 “Haku13+’J meeting [
Correct with i-sking foil 131'J. (7) On the 3rd line of the same page, amend "But," to "Kono." (8) In the same jj 5th line, next to ``heat'', add K [spread adhesive layer +711 and adhere to non-painted place m (9)]. (9) Correct the lines from the same page to the 9th line as follows. Apply pressure to a certain degree. When released, the foil 13) will peel off from the release layer 15) and the non-painted area (9)
(above) Once the masking foil (3)' is peeled off from the adhesive layer (7), masking painting can be carried out. Masking foil after painting (
3)' Peeling is due to adhesive strength of Kakuhaku 13)' adhesive layer (7)
A release tape with greater adhesive strength than that of the previous one! 111
t n The pressure roller 3 presses the masking foil (3)' onto the masking foil (31) with the adhesive force of the release tape nM.
First, the masking foil (3)' gradually peels off along the circumference of the suppression roller.The peripheral force of the non-painted area (9) is 1.It peels off beautifully without becoming jagged. I can do one thing. Unpainted area K [If there is a first part, Kr
J, the press mold also consists of a-ra-t'. A pressure roller for peeling Q2 may be provided with a pressure protrusion at the same location as the pressure protrusion of the pressure roller of the masking film and set in synchronization with the pressure roller (FIG. 3). ” (Page 10s, line S, next to “...”) “See w43. There is a schematic side view 1 showing another embodiment of the method of the present invention.”
Enter the sword. U Drawings (Figures 1 and 3) As shown in the attached sheet. Figure 3

Claims (1)

[Claims] ■ Masking of the object to be painted, which is plastics 1
j! In this method, a low melting point plastic is used for the adhesive layer, and a foil containing a release layer is applied to desired non-painted areas of the object to be coated using a pressing die heated to about the melting point of the adhesive layer resin for a minimum time of seconds. A masking method characterized in that the foil is welded to the object to be coated by pressing at a low pressure f of several hundreds of ire/s, and the foil is peeled off from the release layer after mounting.