Method for fabricating a footwear sole

Abstract

A method for forming a footwear sole is disclosed. Specifically, there is provided a sole mould for fabricating high-quality shoe soles with great efficiency and a method of using such a mould, wherein the soles feature good air permeability and perfect match with the feet by automatically adapting themselves to the shape of the feet. The sole mould includes a first mould for injection-moulding the underside of a leather layer, and a second mould for injection-moulding the upper surface of the leather layer to form the sole. Further, the first mould is configured in the same shape as the fore sole of the foot and the second mould is configured in the shape of a complete sole.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims benefit of Chinese Application Serial No. 201010572489.1, filed on Dec. 3, 2010, which is incorporated herein in its entirety by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to a technology for making footwear, and particularly relates to a mould for making shoe soles and its usage.[0003]Ordinary shoe soles are generally formed up by one or two types of materials, which have poor air permeability and tend to fatigue the feet after long-term wear. Besides, they fit badly with the feet and may easily cause the fore part of the foot to deform if worn for a long time.[0004]WO 2010 / 012401 by O′Connor et al. discloses a footwear outsole 1 made of a lather lamina 3 with ground contact lugs 4 moulded at the bottom of the layer lamina 3 and a series of very thin parallel strips 9 bonded with adhesive at the top of the leather lamina 3. An outsole moulding 2 may be stitched 6 or moulded around the ...

AI Technical Summary

Benefits of technology

[0008]Advantageously, the provision of bores in the midsole layer allow for better anchoring of the first sole lines on one side of the midsole layer with the second sole lines on the other side of the midsole layer by means of the protruding protuberances being embedded with the second formula plastic.

[0009]Preferably, the sole mould is used to fabricate high-quality soles with great efficiency, wherein the sole features good air permeability and is suitable for long-term wear because it can fit snugly with the foot by adapting itself automatically to the shape of the foot.

[0015]The sole mould described in this Invention is simple in structure and easy to operate. It is capable of manufacturing quality foot soles of good air permeability with high efficiency. Moreover, these shoe soles can perfectly match the feet by automatically adapting themselves to the shape of the feet, and are therefore suitable for wear for a long time. Moreover, the product yield is relatively high.

Problems solved by technology

Ordinary shoe soles are generally formed up by one or two types of materials, which have poor air permeability and tend to fatigue the feet after long-term wear.

Besides, they fit badly with the feet and may easily cause the fore part of the foot to deform if worn for a long time.

A problem with such outsole 1 is that the lugs 4 and strips 9 may become detached from the leather lamina, during use for example, because the bonding between the lamina 3 and the lugs 4 and strips 9 is not strong enough.

Also, using stitching 6 to bond the outsole 2 adds an additional stitching step using stitching machinery in addition to the other manufacturing and moulding steps using moulding machinery and potentially increases the costs and complexity.

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