GB2392369A

GB2392369A - Partial glue-exposure cloth wrap sole for indoor shoes

Info

Publication number: GB2392369A
Application number: GB0307646A
Authority: GB
Inventors: Wei Xu
Original assignee: CARLINGTON INVEST Ltd
Current assignee: CARLINGTON INVEST Ltd
Priority date: 2002-04-02
Filing date: 2003-04-02
Publication date: 2004-03-03
Anticipated expiration: 2023-04-02
Also published as: CN2534847Y; GB0307646D0; GB2392369B

Abstract

A partial glue-exposure cloth wrap sole for indoor shoes, including a cloth bottom layer (2), and a rubber or plastic upper layer (1). Layer (1) and layer (2) are heat-pressed together to form a compound structure, the edges of which are turned up to shape a boat rim. Layer (2) employs thick and compact knitting fabrics, with projections (3) on the bottom, which are of the same geometric figure, or of different figures. At least some of the projection surfaces have several gripping protrusions (5) which penetrate through cloth layer (2). The characteristics of this new design are: 1. the majority parts of the sole are not exposed to glue, and the whole sole takes an obvious fabric effect; 2. the sole has excellent anti-slip properties not only in a water contact environment, but also in case of smooth floors, e.g. wooden floor and floor tiles; 3. The cloth and rubber/plastics have fast cohesion, and the rims have high strength, not easily breaking during the sewing process. The sole has good wearability, and is especially suitable for indoor shoes.

Description

Partial Glue-ExPosure Cloth Wrap Sole for Indoor Shoes This invention

concerns a cloth wrap sole for indoor shoes. In particular, it is a kind of partial grip exposure type provided by a compound structure made by heat 5 pressing and injection-moulding.

Based on the current technologies available, most of the indoor shoe soles are of a thin structure, of which the rubber plastic sole is made of rubber or plastic materials through heat-pressing and direct injection moulding. However, since the sole is so thin and the strength of the rubber or plastics is low, it easily breaks during the 10 sewing process. What is more, rubber or plastic materials are prone to aging, stiffening, color-fading and wearing. Publication number of CN2464 11 2Y, discloses a kind of cloth wrap sole for indoor shoes'. According to the Patent, the sole is made by adding a layer of thick and compact knitting fabrics to the rubber or plastic layer of the shoe bottom, then heat-pressing the upper and bottom layers to form a compound 15 sole. To prevent slip, the bottom also has a slight embossing structure, and in order to prevent sewing breaks, the edge of the compound sole is turned up in whole to form a boat rim. This technical design achieved much improvement vs its older counterparts, in that: 1. There is no glue exposure on the sole, and has an obvious fabric effect; 2. The strength of the thin sole is reinforced, and the cloth and rubber 20 have a fast cohesion; 3. The rim of the sole has a high strength, so that it does not break during the sewing process; 4. Good wearability of the sole. However, this type of sole also has a deficiency in terms of its anti-slip effectiveness. To illustrate, since there is no grip-exposure on the bottom, which means there is only a contact between the fabric surface and the ground, the sole is prone to get slippery against smooth 2 5 indoor floors (e.g. wooden floor or floor tiles). The insufficient anti-slip property of this sole poses a risk, especially to old people and children. Therefore, the present invention is provided with a view to improve the bottom structure of the cloth wrap sole for indoor shoes.

According to the present invention there is provided a cloth wrap sole for 3 0 indoor shoes, including a cloth bottom layer, and a rubber or plastic upper layer heat pressed together to form a compound structure wherein the upper layer has projections thereon, at least some of which have gripping protrusions thereon such that, when the layers are pressed together the projections on the upper layer project through on the bottom layer to provide grip members.

The bottom layer will generally employ thick and compact knitting fabrics. The projections are either all of the same geometric figure, or of different figures.

The bottom layer may be a synthetic knitting fabric, or all-cotton knitting fabric.

If regular fabrics are adopted, there will be greater risks of glueexposure due to the 5 poor controllability arising from the fabrics' inadequate elasticity.

In general there are projections in two categories: one is a combination of projections of the same geometric figures or patterns, the other is a combination of projections of different geometric figures or patterns. The combination may be lined on the bottom with regularity, or without regularity. The combination may also scatter 10 around parts of the sole and heel.

The penetrating protrusions are located on no other surface than the surface of the projections; and are located on some or all of the projection surfaces, the decision of which is dependent on need. The penetrating protrusions may take the shape of a triangular cone, a coneshaped stand, a curve or a wave, and even any 15 other 3-D structure.

The working theory of this invention is to make a compound indoor sole by gluing the cloth bottom layer to the rubber or plastic upper layer through heat-pressing and injection moulding; to make a few projecting structures on the bottom, on part or all of which there are several minor exposed gripping protrusions. As such, generally 20 the sole is of a cloth bottom, but on part or all of the projection surfaces there are minor protrusions. In this way the whole sole takes an embossing structure covered by a cloth layer, and on the surface of the projections there are many rubber or plastic gripping protrusions.

This invention displays the following advantages over the current technology: 1. This design adopts thick and compact knitting fabrics for the bottom layer, and rubber or plastics for the upper layer, the two of which generates a compound structure via heat-pressing. As a result, the majority parts of the sole do not expose glue, and the sole takes a clear layer structure with fast cohesion, with the sole taking 3 o a strong fabric effect in overall.

2. Since this new design adopts thick and compact knitting fabrics for the bottom, the sole has a good flexibility, and while heat-pressing, the bottom layer and the upper layer can be glued seamlessly with fast cohesion.

3. Since the majority of the sole is cloth, the sole retains good antislip property in case of water contact. Besides, the gripping protrusions on the projections have excellent anti-slip properties in the context of smooth floors, such as wooden floor and floortiles. Therefore, generally speaking, this compound sole is by far the best for anti 5 slip purposes, and especially suitable for indoor shoes.

4. Since this new design has projections on the sole, and on the projections there are exposed protrusions, this design not only reinforces the joint between the upper and bottom layers, but also improves the anti-slip ability and wearability of the shoes.

10 One example of the present invention will now be described with reference to the accompanying drawings, in which: Figure 1 is a Master View of the new design; Figure 2 is a Rear View of the new design; Figure 3 is an A-A sectional view of figure 1; and 15 Figure 4 is an A-A sectional view, which differs from Figure 3 in that it has sewing tracks along the boat rim.

A type of partial glue-exposure cloth wrap sole for indoor shoes according to the invention, includes a cloth bottom layer (2), and a rubber or plastic upper layer (1) Layer (1) and layer (2) are heat- pressed together to form a compound structure, the 2 0 edge of which is turned up to shape a boat-type rim (4). Layer (2) is formed from thick and compact knitting fabrics, while the upper layer (1) is formed from TPR plastics. On the bottom there are projections (3), which are scattered access the parts of the sole and heel. The projections (3) are of either the same geometric figure, or of different figures, lined on the bottom with or without regularities. Part of the projection surfaces 25 have several minor glue-exposure protrusions (5), which are, in this example triangular cones.

Claims

1. A cloth wrap sole for indoor shoes, including a cloth bottom layer, and a rubber or plastic upper layer heat pressed together to form a compound structure wherein 5 that the upper layer has projections thereon, at least some of which have gripping protrusions thereon such that, when the layers are pressed together the projections on the upper layer project through on the bottom layer to provide grip members.

2. The sole of claim 1, wherein the projections define a regular pattern.

3. The sole of claim 2, wherein the projections are on parts of the sole and heel.

4. The sole of claim 1, wherein the gripping protrusions have the shape of a triangular cone.

5. The sole of claim 1, wherein the gripping protrusions have the shape of a cone shaped stand.

6. The sole of claim 1, wherein the gripping protrusions have the shape of a 2 0 curve.

7. The sole of any preceding claim, wherein the cloth layer is a knitted material.