JPH02281929A - Method for providing resin display piece such as letter or figure to sheetlike matter having hairy layer on surface - Google Patents

Abstract

PURPOSE:To easily and reliably provide a solid resin display piece, by a method wherein plastisol is cast into a recessed part for molding of the display piece and a sheetlike matter having a hairy layer on the surface is superposed upon this molding tool for pressurization and heating so that the hairy layer faces on the plastisol. CONSTITUTION:A matter having a hairy layer obtained by setting up a pile 4 on the surface of a vinyl chloride sheet 3 is used as a carpet 1. Then vinyl chloride sol 6 is prepared as plastisol. Then the sol 6 is cast into a recessed part 5a for molding, a molding tool 5 is heated and the sol 6 is made into a state of semigel. Then the carpet 1 is arranged on the molding tool 5 by making the carpet 1 into a state where both sides are turned reversely, upon the upper part of which a surface plate 7 is superposed further for heating and pressurization. With this construction, a solid display piece can be provided easily and reliability on the surface of a sheet like matter.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is directed to the application of resin display pieces such as letters and figures to sheet materials having a fluff layer on the surface, such as pile carpets used for automobile mats, etc. Regarding the method of attachment.

BACKGROUND ART As a method for attaching resin display pieces such as letters and figures to the surface of a sheet-like article having a fluff layer on the surface, such as a pile carpet used for automobile mats, etc., a predetermined shape is used. A method of sewing a resin display piece formed on the sheet, bonding it with an adhesive, or hot-pressure bonding using a high-frequency welder, etc. Furthermore, a method of laying a thermoplastic synthetic resin sheet on the surface of the sheet-like object and placing it on the top. , overlapping molding molds having molding recesses corresponding to the display pieces on the lower surface side, and heat-sealing the portions of the sheet corresponding to the recesses to the surface of the sheet-like object by applying heat and pressure; A method is adopted in which the unnecessary parts are removed after the

Problems to be Solved by the Invention However, in the case of sewing, the sewing operation is troublesome, which not only increases manufacturing costs, but also poses a risk that the display piece may peel off due to thread breakage or the like.

On the other hand, in the method of bonding with an adhesive, especially when the fluff is long, the display pieces are raised on the surface of the sheet-like object, which not only makes the appearance unsightly, but also has the disadvantage that they may get caught.

Furthermore, the method of bonding resin display pieces by heat and pressure consists of a first step of molding the display piece and a second step of bonding the display piece by heat and pressure, and each step is heated and then cooled. Not only does it take a considerable amount of time to complete the entire process, resulting in poor work efficiency, but it also requires cooling in the first step and then heating again in the second step, resulting in a large loss of thermal energy. This is a problem.

On the other hand, in a method of heat-sealing a display piece to the surface of a sheet-like object by pressurizing and heating a thermoplastic synthetic resin sheet with a mold, it is possible to It is easy for air pockets to form between the display piece and the sheet-like object to which it is fused (as a result, the surface of the display piece becomes uneven and looks bad, and the periphery of the display piece is heated to a predetermined width). Due to the formation of the attached part, it lacks sharpness, and even if you try to add a three-dimensional display piece, there is a limit to the extension of the sheet, so it is difficult to form one that has a three-dimensional effect more than a certain level. It has the disadvantage of being difficult.

This invention was made in view of the above-mentioned problems, and it is possible to easily and reliably attach a three-dimensional resin display piece to the surface of a sheet-like article having a fluffy layer on the surface, while also having excellent appearance and texture. The objective is to provide an economical way to install the

As a means for solving the problem, the present invention provides a display piece molding recess formed in a molding die for molding display pieces such as characters and figures.
A fluffy layer on the surface, which is characterized by injecting plastisol, stacking a sheet-like material having a fluffy layer on the surface upside down, pressurizing and heating it, cooling it, and removing the mold. The gist of this paper is a method for attaching resin display pieces such as letters and figures to a sheet-like article having a shape.

Plastisol is fluid at room temperature and has the property of gelling when heated. In particular, plastisol is made by adding a plasticizer to fine powdered polyvinyl chloride resin to form a paste, or by adding a diluent to it. Added vinyl chloride sol (
PVC sol) is preferably used.

In this invention, first, the plastisol is injected into a display piece molding recess formed in a molding die.

At the time of this injection, it is desirable that the sol is sufficiently degassed by evacuation, etc., so that air bubbles are not formed between the sol and the inner circumferential surface of the recess.

Next, a sheet-like material having a fluff layer on its surface is placed upside down on the mold. Prior to this superposition, it is desirable to preheat the mold to bring the sol into a semi-gel state. By creating a semi-gel state in this way, even if the fluff of the sheet-like material is long or stiff, the fluff may get too far into the molding recess into which the sol is injected, causing the display piece to be damaged. This is because it is possible to avoid the inconvenience of fluff being exposed on the surface.

The preheating may be performed using a heater or the like embedded in the mold.

Thereafter, a surface plate is placed on the sheet-like material and a predetermined pressure is applied thereto, and a heating and pressure treatment is performed using a high-frequency induction heating device or the like to gel the sol.

After the above-mentioned pressure and heating step is completed, it is cooled,
The process is then completed by demolding. Note that this cooling does not necessarily need to be carried out until the temperature reaches room temperature, and it is sufficient to lower the temperature to a temperature suitable for demolding.

Example The present invention will be described in detail below.

In this embodiment, a three-dimensional display piece (2) is attached to the surface of an automobile mat made of a pile carpet (1).

The above carpet (sheet-like material) (1) has a thickness of 2~
Pile (
A material having a fluff layer in which fluff (4) was implanted was used.

First, a mold (5) having a recess (5a) for forming a display piece corresponding to the display piece (2) of predetermined characters, figures, etc. is prepared on its surface, and vinyl chloride sol is used as plastisol. (6) was prepared.

Then, the sol (6) is injected into the four molding parts (5a), and the mold (5) is heated to about 100°C using a heater (H) embedded in the mold (5) for 30 seconds. The sol (6) was made into a semi-gel state.

After that, the carpet (1) is turned upside down and placed on the molding die (5), and a surface plate (7) is placed on top of it.
) were overlapped and held for 2 minutes under a pressure of around 4 Ky/ad. During this time, heating by the heater (H) was continued. As a result, the temperature of the resin was about 150°C.

Subsequently, the heater (H) is heated using a high frequency heating device (8) connected between the surface plate (7) and the molding die (5).
At the same time, it was heated for about 15 seconds. As a result, the temperature of the resin was about 180'C.

After the pressure heating, the high frequency heating device (8) and the heater (
The heating by H) was stopped, and the pressed state by the surface plate (8) was maintained for about 1 minute to cool and demold.

As a result, a three-dimensional resin display piece (2
) was attached to the carpet (1).

When we examined the cross section of the display piece (5) attached as above, we found that the carpet (sheet-like material) (
The pile (fuzz) (4) of 1) did not reach the surface of the display piece (2) but was embedded up to the middle part.

4 and 5 show other embodiments.

As shown in FIG. 4, as a molding die (15), a display piece has a first four-forming part (15b) having a rectangular shape in plan view and a second four-forming part (15c) formed at the bottom thereof. Using the one with the four molding parts (15a) formed, first
Vinyl chloride sol (16) was injected into the molding recess (15c). Then, the mold (15) was heated to about 100° C. by a heater (H) embedded in the mold (15) and held for about 30 seconds to turn the sol (16) into a semi-gel state. Next, a sol (16°) having a different color from the above-mentioned sol (16) was injected into the second molding recess (15c) to similarly form a semi-gel state.

Thereafter, the sheet-like material (11) was placed upside down on the molding die (15), heated and pressurized, cooled, and demolded, in exactly the same manner as in the previous example. Detailed explanation will be omitted by assigning the same reference numerals to the parts corresponding to the above embodiments. As a result, as shown in FIG. 5, a display section (12
A display piece (12) having b) attached to the surface of the sheet-like material (11) was obtained.

Effects of the Invention As described above, this invention involves simultaneously forming a display piece and attaching the display piece to a sheet-like object. Compared to the above method, one step can be omitted, so the working time can be shortened, and there is no energy loss such as reheating the display piece that has been cooled in the first step in the second step. can be eliminated.

In addition, plastisol is injected into the display piece molding recess formed in the mold, and a sheet-like material having a fluff layer on the surface is overlaid upside down and heated under pressure. For example, a method of bonding soft synthetic resin sheets with heat and pressure using a specified mold,
There is no inconvenience such as the formation of air pockets between sheets and sheet-like objects or the inability to form three-dimensional display pieces, and it is possible to always display a desired three-dimensional display that is not only flat but also sharp. The strip can also be easily and reliably attached to the surface of the sheet-like material.

In addition, since plastisol is injected into the molding recess of the mold, and a sheet-like material is placed on top of the plastisol and heated under pressure, the fluff of the sheet-like material may be embedded in the display piece. It is done. Therefore, the display piece can be integrally attached to the sheet-like object in a very strong state.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the state immediately before the pressurization and heating process in cross section, FIG. 3 is a sectional view taken along line ■-■ in FIG. 2, FIGS. 4 and 5 show other embodiments, FIG. 4 is an explanatory diagram corresponding to FIG. It is a perspective view of the sheet-like object corresponding to the figure. (1) (11)...Sheet-like material (pile carpet), (2) (12)...Display piece, (4)...
Fluff (pile), (5) (15)...molding mold,
(5a) (15a)... Four parts for display piece molding... Plastisol.

Claims (1)

[Claims] Plastisol is injected into the display piece molding recess formed in the molding mold for molding display pieces such as letters and figures, and a sheet-like material having a fluff layer on the surface is turned upside down. A method for attaching resin display pieces such as letters and figures to a sheet-like article having a fluffy layer on the surface, the method comprising stacking the sheets under pressure and heating, cooling and removing the mold.