JPS5849225A - Method of molding foamed pad integrated with skin - Google Patents

Abstract

PURPOSE:To obtain the titled pad excellent in appearance whose assembling operation is facilitated and skin end is prevented from being broken, by molding a skin by vacuum molding molds, and eliminating skins that occur at the skin ends by a heat press step. CONSTITUTION:The skin 12 is vacuum molded by the vacuum molding molds, and a raw liquid of a foamable synthetic resin is cast to the undersurface of the skin 12, and is foamed and cured to mold the foamed pad 14 integrated with the skin including a foamed body 14. Then the foamed pad 14 integrated with the skin is inserted in a heating press apparatus so that the skins 18 that have occurred at the skin ends 15 are ends 15 are shrunk by heating in the heating press step to form flattened skin ends 15. It may be preferred, in said heating press step, to cut the skin ends into a desired shape.

Description

[Detailed description of the invention] Concerning the molding method of integrated skin foam.

FIGS. 1 and 2 show examples of seats made from conventional skin-integrated foam, and this seat 1 is made from a vacuum-formed skin using a vacuum mold (not shown). 2, and a foam 3 formed by injecting a stock solution of foamed synthetic resin into the back side of this skin 2, foaming and curing it The terminal 5 is fixed to the seat frame 6 with a clinop 7 or the like.

However, when forming various patterns on the surface of the epidermis 2, tensile forces are applied to the skin end 5 of the conventional skin-integrated foam pad 4 from various directions, and wrinkles 8 are likely to occur. Many wrinkles 8 occur at the declination part of the seat frame 4, and these wrinkles 8 get in the way when the skin terminal 5 is fastened to the seat frame 6 with the clip 7, making the assembly work complicated, and the part where the clip 7 is fastened may be damaged. This easily spoils the appearance of the seat, and there is a risk that the skin 2 may be damaged from the wrinkles 8.

An object of the present invention is to provide a skin with an excellent appearance by removing wrinkles at the skin ends of a foam pad with an integrated skin, making assembly work easier, and strengthening the skin ends to prevent damage to the skin ends. A method for molding an integrally foamed pad is provided, which will become clear from the detailed description below with reference to the drawings.

The gist of the present invention is to vacuum form the skin using a vacuum mold, and then remove wrinkles that occur at the ends of the skin by a hot pressing process.

First, the skin 12 is vacuum-formed using a vacuum mold, and the skin 12 is vacuum-formed using a vacuum mold.
A skin-integrated foam pad 14 similar to that shown in FIG. 1 is obtained, comprising a foam 13 formed by injecting a stock solution of a foamed synthetic resin into the back side of the pad 2 and foaming and curing it. Next, this skin-integrated foam pad 14 is inserted into a heat press device (not shown), and the wrinkles 1.8 that have occurred on the skin ends 15 are heated and compressed in a heat press process, as shown in FIG. 3. A flat epidermal terminal 15 is formed.

In the above embodiment, a method is shown in which the wrinkles 18 on the skin ends 15 are removed by a hot press process after the skin-integrated foam pad 14 is formed, but wrinkles 18 on the skin ends 15 are removed after the skin 12 is vacuum-formed. After the wrinkles 18 are removed by a hot press process and a flat skin end 15 is formed, a stock solution of foamed synthetic resin is injected into the back surface of the skin 12 and foamed and cured to form a foamed body 13. The process may be performed at any stage.

Furthermore, in the above embodiment, when vacuum forming one skin 12, the part covering the side of the foam 13 is vacuum formed in a deep drawing state. The method is not limited to vacuum forming the entire skin 12 of the corresponding portion, but may also vacuum form a portion of the skin 12 corresponding to the side portion of the foam 13.

A different embodiment of the invention is shown in FIG.
The skin end 15 of the skin-integrated foam pad 14 shown in the figure is formed into a flat shape by a hot pressing process.
Since the edges 15a of No. 5 are not aligned and the angled portion 15b overlaps and is unnecessary, the edges 15a are cut so as to be aligned, and the angled portion 15b is also cut.

According to this configuration, the skin end 15 is flat and has no wrinkles, and the edges 15a are aligned and the declination portion 15b is canted, so that assembly of the seat frame becomes easier, and the end skin 15 is not deviated. It is possible to obtain a skin-integrated foam pad 14 with excellent appearance without the risk of wrinkles occurring at the corners during assembly.

FIG. 5 shows the foamed pad 24 with the end edge 25a of the skin end 25 folded back and heat pressed. As shown in FIG. 6A, the synthetic resin on the back side of the skin 22 is The backing materials 27 are welded together to align the edges 25a of the skin terminals 25 and to improve the strength.

As shown in FIG. 6B, a band-shaped reinforcing synthetic resin 30 is placed along the edge of the backing material 27 on the back side of the outer skin terminal 25 and heat-pressed to form a reinforcing synthetic resin on the outer skin terminal 25. The strength of the outer skin end 25 can be increased by welding the resin 30, and furthermore, the outer skin end 25 may be folded back, the reinforcing synthetic resin 30 may be inserted into the folded part, and the reinforcing synthetic resin 30 may be heat-pressed.

7 and 8 show a foamed pad 34 with a folding groove 36 formed at the end 35 of the skin during hot pressing, and FIG. 7 shows a frame 40.
A concave groove 36 is formed at the position of the skin end 35 that abuts the corner 40a of the
FIG. 8 shows a frame 40 in which a pair of grooves 36 are formed in substantially parallel positions corresponding to corners 40a and 40b, respectively. In FIGS. 7 and 8, the reference numeral 32 indicates the skin, and the reference numeral 33 indicates the foam.

Therefore, the skin ends 35 are connected to the corners 40a and 4 of the frame 40.
When folded back at 0b, the folded part can be formed into a sharp corner, and the folded part can be formed in an orderly manner, improving the appearance. The above is an outline of an embodiment of the skin-integrated foam pad molding method according to the present invention.
The wrinkles on the epidermal end of the epidermal foam pad are removed,
It is possible to obtain a skin-integrated foam pad that is easy to assemble, has an excellent appearance, and can effectively prevent damage to the skin ends by improving the strong slope of the skin ends. 3. In the above description, only one embodiment of the present invention has been shown, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention. 24. Brief explanation of the drawings ・3 Figures 1 and 2 show conventional foam pads with integrated skin, respectively. FIG. 3 is a rear perspective view showing the outline of a skin-integrated foamed band formed by the molding method of the present invention, and FIG. 4 is an edge of the skin end shown in FIG. 3. Figure 5 is a rear perspective view showing a state in which the even corner portion is cut with heat pressing, Figure 5 is a rear perspective view showing a state in which the edge of the skin end is folded back and heat pressed, Figure A is a line taken along line A-A in Figure 5. A sectional view, FIG. 6B is a side view showing a state where reinforcing synthetic resin is welded to the front end, and FIGS. 7 and 8 are some parts showing the state where folded grooves are formed at the end of the skin. They are a front and back view and a partial view.

In the figure, 12, 22. 32... Epidermis, 13, 23
゜3...Foam, 14,24.34...
Epidermis - power outage hand, 15, 25. 35... epidermis terminal, 5a... edge, 15b... even corner, 18... wrinkle, 7. ...Backing material,
3o...Synthetic resin for reinforcement, 6...Concave groove, 40...Frame.

Claims (5)

[Claims] (1) In the molding method for a skin-integrated foam pad in which the skin and the foam are integrated, there is a step of vacuum forming the skin using a vacuum mold, and foaming by injecting a stock solution of foamed synthetic resin into the back side of the skin. A skin-integrated foam pad comprising a step of curing and molding the skin-integrated foam pad, and a heat pressing step for removing wrinkles at the end of the skin caused by the vacuum forming after the skin is vacuum-formed. Molding method. (2) The method for molding a skin-integrated foam pad according to claim 1, wherein the skin ends are cut into a predetermined shape in the hot pressing step. (3) The method for molding a skin-integrated foam panod according to claim 1, characterized in that in the hot pressing step, the ends of the skin are folded back and hot pressed. (4) The method for molding a skin integrally foamed mold according to claim 1, wherein in the hot pressing step, a reinforcing synthetic resin is placed on the end of the skin and hot pressed. (5) In the heat pressing step, a folding groove is formed at the end of the skin.
Molding method for integrally foamed skin as described in Section 1.