JPS635701A - Footwear and its production - 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 [Object of the Invention] (Industrial Application Field) The present invention relates to footwear used as, for example, a walkable slipper-type foot warmer, and a method for manufacturing the same.

(Prior Art) For example, footwear used as a foot warmer has a footrest 2 attached to the upper surface of a flat box-shaped sole member 1, as shown in FIG.
A heater 3 is built into the lower surface of the footrest 2, and the upper surface of the footrest 2 is covered with an outer cloth 5 via a cushion material 4, and approximately half of the front end of the outer cloth 5 is covered with a heat insulating cover 6. It has a slipper-like structure. The bottom member 1 is made of hard plastic so as to be able to sufficiently support the weight of a human body.

However, when the bottom member 1 is made of hard plastic, due to its characteristics, the frictional resistance with the floor etc. is small, making it easy to slip while walking. A soft anti-slip member 7 made of foamed rubber or the like that generates frictional resistance is attached with adhesive.

(Problems to be Solved by the Invention) However, as described above, in the method of attaching the anti-slip member 7 to the lower surface of the bottom member 1 using an adhesive, work efficiency tends to decrease, and the adhesive There is a problem that the adhesive tends to overflow and cause economic loss, and that the solvent used in the adhesive worsens the working environment and may cause pollution. This invention aims to solve these problems.

[Structure of the Invention] In order to solve these problems, the present invention provides a non-slip member made of soft or semi-soft plastic on the lower surface of the bottom member made of hard plastic. In addition, a soft or semi-soft thermoplastic sheet is placed in the mold, and in this state a thermosetting sheet is placed in the mold. inject a hard plastic solution, the heat of this plastic melts the surface layer of the sheet, and this melting fuses the sheet to the plastic and integrates it,
Footwear is manufactured by solidifying the plastic as a sole member and hardening the sheet as a non-slip member disposed on the lower surface of the sole member.

(Function) By using heat during molding of the bottom member to bond the material of the anti-slip member to the bottom member, the adverse effects caused by the use of adhesives are eliminated.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows footwear configured as a foot warmer, in which 11 is a sole member, 12 is a footrest, 13 is a heater, 14 is a cushioning material, 15 is an outer fabric, and 16 is a heat retaining cover. The bottom member 11 is integrally molded from thermosetting hard plastic such as polypropylene, polystyrene, ABS resin, etc., and has a recess 17 formed in its lower surface. And this bottom member 11
The anti-slip member 1 is placed on the bottom surface of the
9 is provided, and a convex portion 20 is provided on the lower surface of this anti-slip member 19.
...is formed into a body. The anti-slip member 19 is made of soft or semi-soft brass material such as an olefin thermoplastic elastomer that is softer than the material of the bottom member 11. The anti-slip member 19 is fused to the bottom member 11 based on the heat generated during molding of the bottom member 11, and is integrally attached to the bottom member 11 by this fusion.

Regarding the manufacturing process, first, as shown in FIG. 2(a), a sheet 19a of soft or semi-soft brass material such as olefin thermoplastic elastomer, which is the material of the anti-slip member 19, is placed in the lower mold a. Place. At this time, it is preferable to preheat the sheet 19a. Next, as shown in the same figure (b), the upper mold is closed on the upper surface of the lower mold a, and the cavity C between the two molds a and b is closed.
A solution (150 to 250°
C) is injected. Then, the sheet 19a is moderately softened by the heat of this plastic lla, and the plastic lla is
A part of the sheet 19a enters the cavity C under the injection pressure of
The plastic sheet 11a deforms so as to fall into the recess C1 on the inner surface of the sheet 19a, and the plastic sheet 11a spreads out to cover the sheet 19a.

And with the heat of plastic lla, this plastic 11
The surface layer of sheet 19 in contact with a melts, and this melting fuses sheet 19a to plastic lla. After this, as shown in FIG. 2(c), the plasticilla solidifies to become the bottom member 11, and the sheet 19a hardens to become the anti-slip member 19 that is integrally connected to the bottom member 11°.
Furthermore, the portion depressed into the concave portion c1 of the cavity C becomes the convex portion 20. After the molding is completed in this manner, the upper mold is opened and the bottom member 11 and the anti-slip member 19 are taken out from the cavity C.

The anti-slip member 19 is made of soft or semi-soft plastic, and therefore has a large frictional resistance against the floor surface, etc., so that the wearer can walk easily while wearing this footwear. Moreover, in this embodiment, since the protrusions 20 are integrally formed on the anti-slip member 19, the frictional resistance is further increased, and the user can walk even more easily. As each convex portion 20 is formed, the upper surface side thereof is recessed, and the material of the bottom member 11 intervenes in these recessed portions and comes into close contact with the non-slip member 19 and the bottom member 11. It has the advantage of being able to be held more firmly.

On the other hand, in manufacturing this footwear, when the sole member 11 is molded, the anti-slip member 19 is fused to the lower surface of the sole member 11 using the heat, so that the anti-slip member 19 is attached to the bottom member 11.
9 is installed in one piece, compared to the conventional method of attaching each one using adhesive, work efficiency is greatly improved, and there is no needless protrusion of adhesive, making it more economical. Moreover, since there is no need to handle solvents as in the case of adhesives, there is an advantage that deterioration of the working environment and occurrence of pollution problems can be eliminated.

In the above embodiments, this invention was explained with reference to footwear used as a foot warmer, but it is not necessarily applicable to such footwear, but can be similarly applied to ordinary footwear. Is possible.

[Effects of the Invention] As explained above, according to the present invention, it is possible to improve work efficiency and economic efficiency, and it is also possible to eliminate the deterioration of the work environment and the occurrence of pollution problems. .

[Brief explanation of drawings]

FIG. 1 is a sectional view showing footwear according to an embodiment of the present invention;
FIG. 2 is a sectional view showing the manufacturing process, and FIG. 3 is a sectional view showing conventional footwear. 11... Bottom member, 19... Anti-slip member, a, b.
··Mold. Applicant's agent Patent attorney Takehiko Suzue Figure 2

Claims (2)

[Claims] (1) On the bottom surface of the bottom member molded from hard plastic,
Footwear characterized in that a soft or semi-soft plastic anti-slip member is integrally attached by being fused using heat during molding of the sole member. (2) Place a thermoplastic, soft or semi-soft plastic sheet in the mold, and in this state, inject a thermosetting, hard plastic solution into the mold, and use the heat of this plastic to The surface layer of the sheet is melted, the melting fuses and integrates the sheet with the plastic, the plastic solidifies as a bottom member, and the sheet hardens as a non-slip member disposed on the underside of the bottom member. A method of manufacturing footwear characterized by: