JP2524034Y2 - Insole material for polyurethane direct soap molding - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an insole material for polyurethane direct soap molding.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional insole material 04 for polyurethane direct soap molding has a certain standard (tensile strength of 5 kg / cm width or more and elongation at 5 kg / cm width load of 10% or less) as shown in FIG. There is a two-layer structure in which a fibrous web layer 42 of a predetermined standard (having a basis weight of 0.1 g / cm ² or more) is placed and entangled on the surface of the base cloth 41. Note that these standards are provided to prevent the following phenomena. That is, when the base fabric 41 is not sufficiently strong as the insole material, the eyes of the fiber web layer 42 are opened when the base fabric 41 is stretched and hung on the last, and the polyurethane 30 for shoe sole injected into the mold during the polyurethane direct soap molding is chemically converted. The reaction generates carbon dioxide gas and foams, resulting in an abnormally high internal pressure and seeping out to the surface of the midsole material 04, as well as distorting the sewn cap and causing wrinkles. As shown in FIG. 5, there is also a structure in which the base cloth 41 is formed into three layers sandwiched between the fiber web layers 42 and 42 from above and below. Further, as shown in FIG. 6, in order to prevent the base cloth 41 from being frayed before use, a fibrous web layer 43 which has been subjected to resin processing not to impair the air permeability is added to the configuration of FIG. There are also things.

[0003]

The above-mentioned conventional insole material not only requires the troublesome work of selecting and entanglement the base fabric or fiber web of a certain standard, but also has insufficient cushioning properties. Was.

[0004] The present invention is based on such a conventional technology, and the middle sole material does not stretch when it is hung on the last without using a base fabric limited to a strict standard, and the middle sole surface is further improved. It is an object of the present invention to obtain an insole material for polyurethane direct soap molding, which does not exude polyurethane as a shoe sole and has excellent cushioning properties.

[0005]

SUMMARY OF THE INVENTION The present invention is directed to a polyurethane direct soap comprising a laminate of a felt layer, a stretch-resistant woven fabric layer in which longitudinal yarns are woven, and a resin layer. It is intended to provide an insole for molding.

Another object of the present invention is to provide an insole material for polyurethane direct soap molding in which a sponge layer is additionally laminated in the middle of the insole material.

[0007]

[Function] In the midsole material of the present invention, the felt layer enhances the cushioning property, and furthermore, the elongation is suppressed by the non-stretch woven fabric layer in which the vertical yarn is woven, so that the slack is hung when suspended in the last. Since it is tightly adhered without generating, no distortion or wrinkles are generated in the upper during shoe molding, and the resin layer prevents the polyurethane injected into the mold from oozing to the surface of the insole material. The sponge layer also prevents the poured polyurethane from seeping through the seams in the sewing process and oozing to the insole surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the midsole material 01 of the first embodiment includes a non-stretch woven fabric layer 12 woven with longitudinal threads and a resin layer 13 on the back side of a felt layer 11 disposed on the surface.
And a non-woven fabric layer 14 as a fabric layer which was finally attached.
Layer.

[0009] The insole 10 made of the insole material 01 is a cover 2
2 and their respective peripheral edges are overlapped and sewn to form a bag-shaped shell material 23. When the shell material 23 is hung on the last 50, it is hooked on a toe and pulled in the direction of the knee. In close contact. Therefore, the insole 10 is made slightly smaller at the contact portion with respect to the bottom surface of the last 50, but the stretch-inhibiting woven fabric layer 12 does not extend extra by the warp yarns, and therefore, the insole 10 also does not extend. . In other words, the elongation of the insole 10 can be easily suppressed by the warp-containing woven fabric without requiring any trouble such as entanglement of a base fabric or a fiber web of a certain standard. In the midsole material 01, the felt layer 1
1 imparts cushioning properties, and the film of the resin layer 13 and the nonwoven fabric layer 14 attached thereto prevent the infused polyurethane 30, which will be the shoe sole 21, from seeping onto the surface of the midsole material 01.

Next, the midsole member 02 of the second embodiment will be described with reference to FIG. The midsole material 02 is a four-layer structure in which the urethane foam of the sponge layer 15, the film of the resin layer 13, and the nonwoven fabric layer 12 are laminated on the back side of the felt layer 11 arranged on the surface.

With the above structure, the urethane foam of the sponge layer 15 further improves the cushioning property. Also,
The injected polyurethane 30 is prevented from oozing to the surface of the insole 10 by the film of the resin layer 13, but sometimes oozes to the surface through the seam 16 of the resin layer 13 (see FIG. 1). The exuded polyurethane 31 adheres to the last 50 and causes an inconvenience when removing the shoe 20, but the urethane foam of the sponge layer 15 is pressed against the sewing thread 17 at the seam 16 to form a gap between the two. Since it is not made, the above disadvantages are avoided.

Next, a midsole member 03 of a third embodiment will be described with reference to FIG. This midsole material 03 is formed by laminating a nonwoven fabric layer 12, a sponge layer 15, a resin layer 13, and a nonwoven layer 14 on the back side of the felt layer 11 arranged on the surface.
It is configured in layers. The operation is almost the same as that of the second embodiment, and the description is omitted.

Although the embodiment of the present invention has been described above, the specific configuration is not limited to this embodiment, and even if there is a change within the scope of the present invention, it is included in the present invention. It is what is done. For example, the order of lamination of each layer constituting the insole material is, in the case of only four symbols, 1 in the case of four layers.
1, 13, 15, 12, or 11, 15, 12, 13, or in the case of five layers, 11, 15, 12, 13, 1
4 may be used.

[0014]

[Effect of the Invention] The insole for polyurethane direct soap molding of the present invention is limited to a certain standard because it is constructed by laminating a felt layer, a stretch-resistant woven fabric layer woven with longitudinal threads, and a resin layer. Even without using a base cloth or a fiber web, it adheres tightly without any extra elongation at the time of last hanging, so that no distortion or wrinkles are generated on the shell. In addition, the felt layer provides cushioning properties, and the resin layer prevents the polyurethane injected at the time of injection molding of the shoe sole from oozing to the surface of the midsole. Furthermore, by additionally laminating a sponge layer in the middle, the cushioning property is remarkably improved, and the seepage of the polyurethane which may occasionally occur at the seam with the peripheral cover is completely prevented.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a midsole material according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of a midsole material according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a midsole member according to a third embodiment of the present invention.

FIG. 4 is a partial cross-sectional view showing one embodiment of a conventional midsole material for polyurethane direct soap molding.

FIG. 5 is a partial cross-sectional view showing another embodiment of a conventional insole material.

FIG. 6 is a partial cross-sectional view showing still another alternative embodiment of the conventional midsole material.

[Explanation of symbols]

 01 Insole material for polyurethane direct soap molding 02 Insole material for polyurethane direct soap molding 03 Insole material for polyurethane direct soap molding 11 Felt layer 12 Stretch resistant woven fabric layer 13 Resin layer 14 Nonwoven fabric layer 15 Sponge layer

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B32B 27/40 B32B 27/40

Claims (2)

(57) [Scope of request for utility model registration] 1. An insole material for polyurethane direct soap molding, characterized by laminating a felt layer, a stretch-resistant woven fabric layer in which longitudinal yarns are woven, and a resin layer. 2. The midsole material for polyurethane direct soap molding according to claim 1, wherein a sponge layer is additionally laminated in the middle.