JPS6324840B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention forms an uneven pattern with a three-dimensional perspective on the surface of a decorative object, and can be easily attached to clothes with an iron or the like, and can be dry-cleaned. The present invention relates to a method for manufacturing a decorative body made of synthetic resin, which produces a decorative body with an uneven pattern that does not deform.

(Prior art) This type of conventional synthetic resin decoration consists of a polymeric sheet with a vinyl chloride sheet on the surface, a foamed synthetic resin sheet on the inside, and a vinyl chloride sheet on the back, which is placed between upper and lower molds. The periphery of the pattern was heated and pressed using high frequency waves and welded.

(Problem to be solved by the invention) However, according to the above manufacturing method, when the synthetic resin sheets are polymerized, air is contained between each sheet, and this is caused by placing the polymerized sheet between the upper and lower molds and heating it. When pressurized, air bubbles remain inside the uneven pattern, which not only destroys the uneven pattern of the decoration but also causes damage during handling.

Furthermore, since the concave-convex pattern of the decorative body is formed only by the parts pressed by the upper and lower molds and the parts not pressed, there is also a drawback that the difference in the concave-convex pattern is small and lacks a three-dimensional effect.

Furthermore, clothes with this type of decoration attached cannot be ironed because the surface of the decoration is made of a vinyl chloride sheet, and if dry cleaning is done, the vinyl chloride sheet on the surface will absorb into cleaning solvents. Since the decorative body becomes deformed if the decorative body is disturbed, it is necessary to remove the decorative body and send it to dry cleaning, which has the disadvantage that some decorative bodies cannot be dry cleaned.

The present invention solves these drawbacks and forms an excellent three-dimensional uneven pattern without leaving any air bubbles in the uneven pattern. Furthermore, the decorative object can be dry-cleaned without being damaged and can be ironed. The object of the present invention is to provide a method for manufacturing a synthetic resin decorative body that can be attached to clothing.

(Means for Solving the Problems) In order to achieve the above object, the present invention sequentially adds another thermoplastic synthetic resin sheet and a pattern-printed transparent thermoplastic synthetic resin sheet to a thermoplastic synthetic resin sheet. Next to the polymerization step of polymerizing to form a polymerized sheet, the polymerized sheet obtained in the previous step is placed at a predetermined position on the lower mold, and the outer shape is made of a fusing blade and a pressing part and a desired concave pattern are formed inside. In a method for producing a decorative body made of synthetic resin, the formed upper molds are overlapped and the polymer sheet is pressurized and at the same time heated by a heating means to fuse and form a decorative body of a predetermined shape.
The above polymerized sheet is made by stacking a medium-hard vinyl chloride sheet 3, a polyurethane sheet 4, and a nylon sheet 5 in this order on the back side of a transparent urethane sheet 2 on which a printing layer 1 is formed, and by pressing these sheets together. To remove the air during polymerization, as a lower mold, insert the inner peripheral groove wall 1 at the position corresponding to the fusing blade of the upper mold.
The transparent urethane sheet 2 and the polyurethane sheet 4 do not melt when the polymer sheet is pressed between the upper and lower molds and heated at the same time, and the vinyl chloride sheet 3 outlines a method for manufacturing decorative objects made of synthetic resin, which is characterized by heating to a temperature of around 130°C, which melts the object.

(Function) As described above, the polymer sheet is coated with a printed layer 1 on the back side.
By layering a medium-hard vinyl chloride sheet 3, a polyurethane sheet 4, and a nylon sheet 5 in this order on the back side of the transparent urethane sheet 2, the vinyl chloride sheet can be exposed to perchloroethylene during dry cleaning. 3 is enclosed between the transparent urethane sheet 2 and the polyurethane sheet 4, and the lowermost surface becomes a nylon sheet 5 that can be welded with an iron.

In addition, since the polymer sheet is pressure-bonded to remove air between polymerizations, even if the polymer sheet is placed between the upper and lower molds and heated under pressure, air bubbles will form in the uneven pattern of the resulting decorative object. is no longer intervening.

Also, as the lower mold, the fusing blade 8 of the upper mold is used.
A circumferential groove 1 having an inner circumferential groove wall 17A at a position corresponding to
7, and when pressing the polymer sheet between the upper and lower molds and heating it at the same time,
Since the transparent urethane sheet 2 and the polyurethane sheet 4 are heated to around 130°C where only the vinyl chloride sheet 3 is melted, and the transparent urethane sheet 2 and the polyurethane sheet 4 are not melted, the peripheral edge of the polymerized sheet is melted before the fusing blade of the upper mold enters the circumferential groove. The inner surface of the blade presses the molten vinyl chloride sheet to prevent it from flowing out and move it to the internal pattern protrusions, and the pattern protrusions are formed into even larger protrusions.

(Example) Next, an example of the present invention will be described in detail based on the drawings as follows.

As shown in Fig. 1, from the top, a transparent urethane sheet 2 having a printed layer 1 with a pattern etc. printed on the back side with a synthetic resin printing ink is placed on the lower side of the printed layer 1, and then a medium-hard sheet of A vinyl chloride sheet 3, a polyurethane sheet 4, and a nylon sheet 5 are polymerized. In addition, the nylon sheet 5 has a melting temperature of 70
Nylon 12 at a temperature of about 100°C is suitable.

Next, in order to remove air from these polymerized sheets, they are polymerized and pressure bonded from the top and bottom surfaces at a temperature of 30 to 50°C.

The upper mold 15 used is provided with a fusing blade 8 at a position inside the outer contour line of a portion corresponding to the outer contour line 7 of the decorative body 6, and further has a flat pressing portion 9 following the slope 8A inscribed therein. A concave circumferential wall 11 that matches the character/figure bulge 10 is provided at the inside position, a pressing part 12 is provided inside the wall, and a central recess 14 that matches the character/figure bulge 13 is provided inside the wall. The corresponding lower die 16 has a circumferential groove 17 having an inner circumferential groove wall 17A into which the fusing blade 8 of the upper die 15 fits and cuts.

Next, the manufacturing method will be explained as follows.

That is, the polymerized sheets polymerized in the above-mentioned order, with air removed between them, are placed on the lower mold 16, and the recessed peripheral wall 11 and central recessed portion 14 of the upper mold 15 are placed on the lower mold 16.
are aligned with the printing surface of the printing layer 1 that becomes the respective letter/figure bulges 10 and 13 of the transparent urethane sheet 2 on the uppermost surface, and the transparent urethane sheet 2 and the polyurethane sheet 4 are not melted and have a medium-hard polymerized inside thereof. Heat is applied to around 130°C to melt the vinyl chloride sheet 3, and the outer shell contour line 7 is cut by the cutting blade 8 of the upper mold 15, and at the same time, the inner slope 8A of the melting part and the pressing parts 9, 12 following it are melted. Press the character/figure bulge part 10
The outer edge 18 is formed along the outer shell contour line 7 cut by the cutting blade 8, forming a character/figure bulge 13.
remove.

(Effects of the Invention) According to the present invention explained above, the polymer sheet can be
Transparent urethane sheet 2 with printing layer 1 formed on the back side
A medium-hard vinyl chloride sheet 3, a polyurethane sheet 4, and a nylon sheet 5 are layered in this order on the back side of the vinyl chloride sheet 3, which is exposed to perchlorethylene during dry cleaning.
is now contained between the transparent urethane sheet 2 and the polyurethane sheet 4, and the conventional problem of deformation of the decoration when the surface vinyl chloride sheet is exposed to cleaning solvents is solved. Dry cleaning can be performed with confidence regardless of whether there is a decoration or not, and since the bottom surface is a nylon sheet 5 that can be welded with an iron, it can be easily cleaned with an iron without using sewing methods. It can be reliably attached to the object to be attached.

In addition, since the polymer sheet is pressure-bonded to remove air during polymerization, even if the polymer sheet is placed between the upper and lower molds and heated under pressure, air bubbles may be present in the uneven pattern of the resulting decorative body. This eliminates the collapse of the uneven pattern caused by the air bubbles intervening in the uneven pattern, and the damage caused by the air bubbles.

Furthermore, a lower mold in which a circumferential groove 17 having an inner circumferential groove wall 17A is formed at a position corresponding to the fusing blade 8 of the upper die is used, and the polymerized sheet is placed in the upper and lower molds 1.
When pressurizing and heating at the same time between 5 and 16, the transparent urethane sheet 2 and the polyurethane sheet 4 are heated to around 130° C. at which only the vinyl chloride sheet 3 melts without melting, so the fusing blade of the upper mold 15 By the time 8 enters the circumferential groove 17, the periphery of the polymerized sheet is pressed by the inner surface of the fusing blade 8 to prevent the molten vinyl chloride sheet 3 from flowing out and move it to the internal pattern convex part. . Therefore, the pattern protrusions are formed into even more bulging protrusions,
The formed concavo-convex pattern becomes more three-dimensional, and there are effects such as the ability to manufacture a decorative object with excellent perspective.

[Brief explanation of the drawing]

The drawings show examples of the present invention, in which Fig. 1 is an explanatory diagram showing the polymerization order of a synthetic resin sheet, Fig. 2 is a plan view of a decorative body, and Fig. 3 is a diagram taken along line A-A in Fig. 2. FIG. 4 is a partially omitted enlarged sectional view showing the pressed state of the mold. 1... Printing layer, 2... Transparent urethane sheet, 3
... Medium hard vinyl chloride sheet, 4 ... Polyurethane sheet, 5 ... Nylon sheet, 7 ... Outer shell contour line, 8 ... Melting blade, 8a ... Slope, 8b ...
...Slope part, 9, 12... Pressing part, 10, 13...
Character/figure bulging portion, 11... Concave peripheral wall, 14... Central concave portion, 15... Upper mold, 16... Lower mold, 1
7... Circumferential groove, 17A... Inner circumferential groove wall.

Claims (1)

[Claims] 1. Next to the polymerization step of sequentially polymerizing a thermoplastic synthetic resin sheet with another thermoplastic synthetic resin sheet and a transparent thermoplastic synthetic resin sheet with a pattern printed on it to form a polymerized sheet, place the thermoplastic synthetic resin sheet at a predetermined position on the lower mold. The polymer sheet obtained in the above step is placed on the mold, and an upper mold having a fusing blade on the outside and a pressing part and a desired concave pattern formed on the inside is stacked, and the polymer sheet is pressed and at the same time heated by a heating means. , in a method for manufacturing a synthetic resin decorative body in which a decorative body of a predetermined shape is formed by melt-cutting, the polymer sheet is placed on the back side of a transparent urethane sheet 2 on which a printed layer 1 is formed, and medium-hard vinyl chloride The sheet 3, the polyurethane sheet 4, and the nylon sheet 5 are layered in this order, and they are pressed together to remove the air between the polymerization layers. The transparent urethane sheet 2 and the polyurethane sheet 4 do not melt when the polymer sheet is pressed between the upper and lower molds and heated at the same time, and the vinyl chloride sheet is heated. A method for manufacturing decorative bodies made of synthetic resin, which is characterized by heating to around 130°C, where only 3 is melted.