JPS61118174A - Method for coating hot melt - Google Patents

Abstract

PURPOSE:To paint easily and efficiently by coating a hot melt which is heated and melted on the surface of a mat pattern, then pressing the mat pattern on the part to be painted, and transferring the hot melt. CONSTITUTION:A heated and melted hot melt 2 is coated by a roll coater on the surface of a releasable mat pattern 4, and the mat pattern 4 is cooled. The mat pattern 4 is then pressed on the part 6 to be painted, and the hot melt 2 is transferred on the part 6 to be painted. Consequently, the hot melt can be coated easily and rapidly on the part 6 to be painted even with compli cated shapes.

Description

[Detailed description of the invention] The present invention relates to a hot melt coating method.

Hot melts have been widely used in recent years as adhesives, sealant coating materials, etc. in response to the needs for solvent removal and process rationalization.

Conventional methods for applying hot melt include, for example, applying molten hot melt to the area to be coated using a discharge gun, and applying using a T-die extruder.

However, with these conventional methods, coating is difficult if the shape of the part to be coated is complex, or
There were drawbacks such as the long application time, which resulted in restrictions on the use of hot melt.

As a result of intensive research in view of the above-mentioned drawbacks of the conventional art, the inventors of the present invention found that if hot melt is applied using a female mat pattern, the application can be easily performed even if the shape of the area to be applied is complex. Furthermore, the present inventors discovered that the time required for one operation can be shortened and coating can be carried out with high efficiency in one operation, leading to the completion of the present invention.

That is, in the third aspect of the present invention, a heated and melted hot melt is applied to the surface of a mat pattern having a female pattern using a roll coater, and then the mat pattern is cooled, and then the mat pattern is pressed onto a part to be coated. , the hot melt coating method is characterized in that the hot melt coated on the mat pattern surface is transferred to the vt2 fabric portion and the hot melt is coated on the coated portion.

The following two aspects of the present invention will be explained in detail based on the drawings.

- In the coating method of the present invention, first, heated and melted hot melt is applied onto the surface of a female matte pattern using a roll coater.

For example, as shown in FIG. 1(A), a hot melt 2 heated and melted in a molten layer 1 is applied by a roll coater 3 onto the surface of a mat pattern 4 having a female pattern.

As the hot melt 2 that can be applied to the coating method of the present invention, any conventionally used hot melt can be used, but 3, for example, 5EVA hot melt can be used.
Polyamide hot melt.

Polyester hot melt, thermoplastic rubber hot melt, etc. are applicable.

The mat pattern 4 in the present invention is a plate of any shape made of a female material, and its surface shape is appropriately selected according to the shape of the part 6 to be coated provided on the surface of the object 5 to be coated. 1 For example, the object to be coated 5
When is the internal contact fFj! of the calculator, as shown in FIGS. 2 and 3, the internal contact fFj! A plurality of shaped concave portions 7.7 and convex portions 8
Those that have a certain shape are used.

Any material can be used for the mat pattern 4 as long as it is female and has a certain degree of rigidity, but silicone rubber is the most preferred material.

When the mat pattern 4 has the shape shown in FIGS. 2 and 3 above, the hot melt 2 applied by the roll coater 3 is applied to the surface of the convex portion 8 of the mat pattern 4 as shown in FIG. 4. This is because the coating layer 9 is not coated on the recessed portions 7, 7, and so on.

The coating layer 9 of the hot melt 2 is applied in the shape of the convex portion 8 shown in FIG.

By changing the surface unevenness shape of the mat pattern 4 in this manner, any lj[M-shaped coating layer 9 can be formed on the surface of the mat pattern 4.

Next, hot melt 2 applied to mat pattern 4
After cooling, the mat pattern 4 is pressed onto the coated part 6 of the coated object 5, and the hot melt 2 coated on the surface of the mat pattern 4 is heated to 12
.

The hot melt 2 is transferred to the cloth portion 6 and applied to the coated portion 6.

For example, in FIG. 1, the mat pattern 4 is attached to the tip of the transport machine IO which is configured to be vertically movable and slidable, and the mat pattern 4 is configured to circulate cooling water inside the transport machine IO. Cool pattern 4. Each time the mat pattern 4 is cooled, the hot melt 2 becomes sticky and can be easily separated from the mat pattern 4.

After that, as shown in Figure 1 (b), (c), and (d),
The hot melt 2 can be applied to the area to be coated 6 by pressing the hot melt 2 on the surface of the mat pattern 4 to the area to be coated 6 of the cloth body 5 .

At this time, as described above, the mat pattern 4 is cooled, and the hot melt 2 is made sticky and has good peelability from the mat pattern 4. Also, the mat pattern 4 has a ^ll type property. Since it is made of the same material, the hot melt 2 can be easily peeled off from the pattern 4 and transferred to the part 6 to be coated, and the hot melt 2 can be easily and quickly applied to the part 6 to be coated.

In this embodiment, the mat pattern 2 has a rectangular bottom surface having concave portions 7°7, . . . and convex portions 8, but is not limited to this. Not only can the hot melt be applied to an area to be coated which has a similar shape, but if the mat pattern 4 is formed smoothly without any uneven parts, the hot melt can be applied to the entire surface of the object to be coated. Hot-melt coating can be easily and quickly applied to any shape of the object to be coated.

As explained above, the hot melt coating method of the present invention is as follows: 5. After applying the heated and molten hot melt onto the surface of the female mat pattern using a roll coater, the mat pattern is cooled, and then the mat pattern is matted. The pattern is pressed onto the part to be coated, and the hot melt applied to the surface of the matte pattern is transferred to the part to be coated to apply the hot melt to the part to be coated. It is also possible to apply hot melt easily and quickly.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is a partially cutaway schematic side view showing the steps of the coating method of the present invention. Fig. 2 is a bottom view showing an example of the mat pattern, Fig. 3 is a vertical cross-sectional view taken along the line m-m in Fig. 2, and Fig. 4 is a longitudinal cross-sectional view showing the state in which hot melt is applied to the mat pattern. It is. 2... Hot melt 3... Roll coater 4... 77 pattern 6... Part to be coated

Claims (1)

[Claims] After applying the heated and molten hot melt onto the surface of the female-shaped mat pattern using a roll coater, the mat pattern is cooled. A method for applying hot melt, which comprises transferring the hot melt to a part to be coated and applying the hot melt to the part to be coated.