JPS5951040A - Molded sheet - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molded sheet 1. More specifically, the present invention relates to a molded sheet 1. This relates to a molded sheet that is coated onto a moldable sheet and then vacuum-formed or pressure-formed so that the inner surfaces of its four parts are made sticky by the heat generated during molding.

Traditionally, electrical and electronic manufacturing factories,
In factories where other parts assembly work is carried out, metal or plastic boxes with partitions are often used as materials for transporting parts between processes within the factory. A).

In some cases, C may also use the If'f ratio described above when transporting semi-finished products between manufacturing facilities.

However, recently, instead of this, due to reasons such as increasing thickness and lowering costs, thermoformable seals have been replaced by methods such as vacuum forming and pressure forming. Increasingly, sheets with recessed parts that can be purchased are increasingly used. However, the problem with this case is that parts may come out of the recesses of the seat due to vibrations during transportation, interfering with assembly work, and are susceptible to forces such as impact IIF and vibration. ) When transporting parts that are prone to breakage, the parts may swing (and possibly break) in the recesses of the N-1.

The inventors of the present invention have considered the above-mentioned circumstances and have repeatedly studied various ways to prevent parts from swinging in the recess of the sea 1. As a result, the inventors have found that the inner surface of the recess has adhesive properties. was found to be effective.

Therefore, the inventors of the present invention have conducted repeated machining tests on a method for producing a sheet having adhesive properties on the inner surface of the recessed portion. One possible method would be to apply a normal adhesive to the sheet and then mold it immediately after application, but in this case, since the 7-t becomes adhesive before the molding process, The previous notebook is difficult to handle, whether it is in roll form or in cut form, and the workability of molding is also poor. Another possibility is to apply adhesive to the inner surface of the concave portion of the sheet after forming the notebook.
Since the object to be coated is not flat, it is not possible to apply the oil coating technique to the L filter, making the work extremely difficult.

As a result of studying methods to solve the problems in coating work and molding work as described in L, the present inventors found that the heat-adhesive coating agent does not have tackiness after application, but only after heating. If we focus on the fact that it has the property of exhibiting the following properties, we can apply it to a sheet and then mold it.

Coating technology and molding technology that are usually performed 18
This method allows you to easily and easily apply adhesive to the inner surface of the recess without any problems during work.
-obtained)L, and completed the present invention.

The configuration (A) and processing method of the molded seam 1 of the present invention will be explained in detail below with reference to the drawings.

As shown in the cross-sectional view of FIG. 1, the molded sheet 1 of the present invention is formed by providing a layer (1) of a heat-adhesive coating agent on a thermoformed sheet (f1), f211-, and then vacuum forming the sheet (1) or The fl1 layer has concave portions formed on its inner surface by air pressure molding.

(1) Heat-adhesive coating [Agent layer - adhesive σ such as rubber-based, acrylic acid ester-based, Nisder methacrylate-based, or silicone-based adhesive] Microparticles are coated with paraffin wax,
This microcapsule is made by coating microcapsules coated with a substance that melts when heated at a relatively low temperature, such as polyethylene wax or petroleum wax.At room temperature, the adhesive particles are coated with a wax-based coating. It does not exhibit tackiness because it is completely covered by the adhesive, but when heated above a certain temperature, the wax-based coating melts and the adhesive appears on the surface, which causes it to exhibit tackiness. It has the following.

(2) Thermoformable sheet 1 is made of plastic sand which softens when heated and exhibits τjJ' flj properties, hard polyvinyl chloride,
Polystyrene, styrene-butadiene copolymer, acrylonitrile-styrene copolymer, acrylonitrile-
Sheets of butadiene-styrene copolymer, polyhorn, -bonate hoe may be applied. The thickness of the sheet should be selected appropriately to avoid excessive deflection, deformation, etc., depending on the number of parts, etc., and should not be limited to one line. No, but usually 100
A sheet with a thickness of ~500μ is used.

The properties of the coating liquid of the heat-adhesive coating agent forming the layer (1) are 1. Normally, the above-mentioned heat-adhesive microcapsules are dispersed in water or other solvent in the form of a dispersion. It is a liquid.

The coating liquid can be applied to the thermoformable sheet (2) using commonly used coating methods such as gravure coating, air knife coating, o-ru coating, IJ bar roll coating, and blade coating. Is it applicable?1). How to apply kone, etc.
After applying the coating solution, use hot air to evaporate water or solvent with a pestle and dry the coated surface for 4 yi/s (1)!
¥J is formed, but here 1. ; Drying conditions 1tC-
), the microcapsule coating agent is dissolved fSlf t
, 'C# near Ii surface shows stickiness') vc, if7＾Apply temporary heat 1. 1) Sea urchin, and dry the coated surface for 11 minutes.1) Set the temperature, air pressure, line speed, and (yθ) conditions appropriately (υ) as shown in 1). I want it!

Also, (1) layer coating M &Co', then coating h lif
The relationship is that the greater the number, the greater the adhesive strength after heat molding;
l).

However, the parts to be transported are of great importance, or the parts are/-
1. In cases where the contact area is small, it is necessary to increase the adhesive strength, so it is preferable to increase the amount of coating M, taking into consideration the importance of the parts, shape, and N1 method. It is desirable to set the applicator accordingly.

As shown in below-1-, applying the heat-adhesive coating agent and applying the heat-adhesive coating material through the steps 1 and 1. can be formed using vacuum forming method (a) or pressure forming method. In either case, the molding is performed with the non-coated surface facing the female mold so that the surface coated with the heat-adhesive coating agent becomes the inner surface of the recess after molding.

In both vacuum forming and pressure forming methods, filter heating is performed using a heater to soften the sheet during forming, but in general, the appropriate temperature for forming a thermoforming sheet is the layer of heating adhesive coating agent ( Since the melting temperature is higher than the melting temperature of the wax-based material of the coating agent for the microcapsules in 1), the heating during molding melts the coating agent for the microcapsules, and adhesive particles appear on the surface, and after molding, the inner surface of the recess in the seam 1. becomes sticky.

In addition, in the case of pressure molding, a layer (1) of a heat-adhesive coating agent is used.
If the sheet comes into direct contact with the hot plate, the sheet may adhere to the hot plate and the workability during the molding process may deteriorate.
It is desirable to apply a non-adhesive silicone tape or a peeling tape such as Deflon to the surface of the hot plate in advance.

An example of the shape of the sheet formed in this way is shown in the second example.
As shown in the figure 4-6 -1-1! lIIν forming 1<l Niji-1...\ by applying a heating viscosity 11 type coating 11 agent and vacuum forming or pressure forming 1) Producing N-1 having adhesiveness on the inner surface of the concave r<11. 4) Now that you have explained the method, please tell us about the format of this sheet.

The molding/-to of the present invention performs f'1 work with the parts set \"l-.
5 [u: In the first place or between the two places: t6, 11
“- Pipes for transporting parts or semi-finished products between
” is used in 17. The parts are made of the present invention 11g 7-
It is placed inside the four parts, and is transported by a conveyor vehicle or by a belt conveyor, puller, etc. At that time, since the inner surface of the recess has a 1-1 piece IIl'', 5 parts ('',
The inner surface of the four parts VC+s is fixed J+, the filter is fixed, and the vibration during transportation (', I, impact filter, 10 The parts do not come out due to force) 4. 7J11.c (has 5 advantages.

Also, parts vibrate while being transported.

It is relatively weak against forces such as impact, and even in cases where accidents are likely to occur, the five parts do not shake or move within the four parts of the seat, so it is highly effective in preventing the destruction of one part11. It also has the advantage of Furthermore, the molded seam of the present invention 1
・Because it is made of plastic, it is lightweight, so it is easy to handle during transportation work, etc., and it is lower cost than metal or wooden parts transportation materials, and when discarded. It has many advantages, such as the fact that it can be easily incinerated, reducing the cost of disposal.

As described in detail above, the molded sheet of the present invention is
By combining coating technology and molding technology, it is possible to simplify manufacturing processes, and it is also possible to improve the efficiency of parts transportation by streamlining parts assembly work. It is of course very effective as a reference material.

Examples of the present invention will be described below.

〔Example〕

A dispersion-like heat-adhesive coating agent (also known as Delay) in which heat-adhesive microcapsules are dispersed in water.
(Also called Dotanoku type adhesive), Olivine 11 P W
A 500-8 (manufactured by Toyo Morton) was used as a stock solution (solid content concentration 50%) with a line count of 75ein and a plate depth of 135μ.
Gravure engraving version Q trowel, hard 'e↓ vinyl chloride sea 1
・, Sumilight ＼7SS-1ro [ ] 8 (thickness 500μ,
(manufactured by Sumitomo Bakelite).

The coated surface was dried by volatilizing the moisture with hot air in an oven. However, drying at this time): ■Line 1' mouth, L temperature 55℃
, line speed + 07n 7' minutes, coating time
i rllr Ll: It doesn't show 1 piece of adhesive, and the coating is 14! / , /'7rikoru)tsu puko.

This sheet 1 was vacuum-formed to form a layer of heat-adhesive coating material that would become the inner surface of the recess. Fig. 1 shows a cross-sectional view, and Fig. 2 shows a view from 1-. i, 1: ') shaped 7
1.(12 n rnm on top, 4:
2 II nnn, depth 5 + nm) was created.

However, the temperature of the surface of the sheet during molding (4,132℃
Met. After molding, the surface of the heat-adhesive mold coating is 1, the agent is 1<, 1, and the inner surface of the recess is 1.
[It showed stickiness. When the adhesive side is attached to a stainless steel plate by applying a pressure of 1 kg/ci, the adhesive strength is 1 s o o g.
In addition, as a comparative example, a hard vinyl chloride sheet without heat-adhesive coating agent 1.(Sumilite ■5S-130)
8,300 tt) was vacuum formed under the same conditions to create a sheet having the same shape as the example.

A glass sphere with a diameter of 15 mm (
rr! , 4.4F) is placed on a horizontal belt conveyor at a speed of 10 m/min for a distance of 10 m, and under the same conditions, a cylindrical aluminum cylinder with a diameter of 1 mm and a length of 15 cm is transferred. Table 1 shows the situation after each transfer when parts (overlapping 1277) were transferred.

Table 1 Status after parts transfer Note: The numbers on the right side of each column indicate the number of parts transferred.
The numbers on the left indicate the number of parts that protruded out of the sheet. .

When using the Seat 1 of this invention, the parts are fixed in the recesses of the seat, and vibrations during transportation may cause the parts to protrude outside the Seat 1. Unfortunately, the continuous shooting work was done at 71"! 1+
,reactor·

[Brief explanation of drawings]

The 11th section is a sectional view of the molded sheet 7-1 of the present invention, and FIG. (1) Heat-adhesive coating - 1 agent 0) layer (2) Thermoformability/--T/hours WF Applicant Letterpress Seal (1: Ri Co., Ltd. Representative Kazuo Suzuki)

Claims (1)

[Claims] Thermoformability/- After applying a heat-adhesive coating agent (delayed-tack adhesive) that exhibits tacky properties when heated above a certain temperature, the coated surface is applied to the inner surface of the recess. "Naru": A molded seal with inner surface adhesiveness, characterized in that adhesiveness is imparted to the inner surfaces of the four parts at the same time as heating during molding by molding using a vacuum forming method or a pressure forming method.