DE8518914U1 - Shoe with a directly injected or foamed-on outsole - Google Patents

Description

Philipp Schaefer, "..". . '* .. "." ,:' Oberstr.

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3 Hanover

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June 27, 1985

Shoe with a directly injected or foamed-on outsole

The invention relates to the design of the side of a shoe bottom facing the foot in a shoe with a Directly molded or foamed-on outsole made of a plastic material.

Shoes in which the outsole is formed directly on the shaft by injection molding or foaming a plastic material were generally unsatisfactory in terms of hygiene and comfort. Particularly closed Shoes with a foamed sole that is pulled up on the side cause their heat-insulating properties on warm days an unpleasant "burning sensation" and dampness of the feet after a short period of wear. shoes with an insole sewn onto the shaft are generally less favorable than shoes in which the shaft has a means a lasting allowance with an insole made of a leather fiber material connected is.

The problem can be eliminated or reduced by using an insole made of thick natural leather. However, thick, unfinished natural leather is very expensive and is therefore hardly or not at all a solution to the problem used.

The present invention has set itself the task of a shoe with an insole sewn onto the shaft and an outsole that is injection-molded or foamed onto the upper and the insole, with one that is pulled up to the side To create edge, the disadvantages mentioned are eliminated.

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Furthermore, the sole construction should reduce the weight _{t maintain} the flexibility and prevent the formation of odors _t caused by perspiration. In addition, it is part of the task that an individual footbed is formed by the weight of the wearer.

The solution to these problems takes place with the features of Claim 1.

The single-layer wood is still sufficiently flexible in the intended thickness of up to 1.2 mm. Through the solid inseparable Connection with the low-stretch middle layer or the top layer, forming the middle layer Laying prevents the wood from being overstretched and breaking with movement and pressure. If the layer (2) consists of several fleece and / or fabric layers, these must also be firmly connected to one another. The middle class can e.g. be single-layer and consist of a fleece reinforced and impregnated with a fabric insert. But it can also be composed of multiple interconnected fleece and / or fabric layers Be, Fig. II (2). In any case, the thickness of the middle layer must be greater than 1.4 mm, preferably greater than 2.0 mm so that enough deformable material is available for the formation of a footbed. The density of Middle layer should be less than 0.7, preferably less than 0.5, so that there are enough cavities to accommodate of moisture are present. Nonwoven materials are also understood to be those which essentially consist of fibers and a binder, and which have been manufactured on a paper machine.

The top layer (1) according to the invention consists of a single layer Wood with a thickness of more than 0.18 mm, preferably from 0.6 to 0.8 mm. This layer takes the Moisture very quickly and passes it on to the also absorbent middle layer (2) underneath.

The wood layer itself remains almost dry, because wood can absorb a relatively large amount of water, similar to natural leather without feeling wet.

According to the invention, it is advantageous if the intermediate layer is elastic to a certain extent, because it creates a pumping effect that also enhances the climate in the shoe favorably influenced. This can be done, for example, by impregnating the middle layer or part of the middle layer achieved by means of a slastomeric plastic material be, or by joining several layers with different density, absorbency and the like. Which then together form the middle class.

The adhesive film with which the layer (1) is connected to the layer (2) remains when looking at the individual layers not taken into account, as well as one or more possibly existing adhesive films or adhesive compounds that are involved in the structure of the Middle class are involved. According to the invention, however, the adhesive should be partially, that is to say in the manner of a strip, grid or grid, between be arranged in the layers in order to maintain the water vapor permeability of the individual layers. Hot melt adhesives that only must be applied on one side, and which can be pressed during or after activation, have proven to be special Proven to be beneficial because they best allow moisture to pass through. If the middle class is made up of several layers it makes sense to give the layer closest to the wood layer the highest density. So can this layer expediently consist of a waterproof and moisture-absorbing fleece produced on a paper machine. The middle layer must also be such that the sole-forming polymer (3) penetrates into it by a maximum of 35%, otherwise the middle class becomes too hard and otherwise unfavorably changes. The wood layer (1) can consist of any wood, preferably a light-colored, low-splinter wood, such as E.g. made of ash or beech, which can also be colored, printed and embossed.

Claims (2)

• ■ ■ t · claims 1. Claim: Shoe with an insole sewn onto the shaft and one on the shaft and the Insole molded or foamed-on outsole with an outsole that is pulled up to the side Edge, characterized in that the uppermost, facing the foot Layer (1) is single-layer, and consists of a 0.18 to 1.2 mm thick wood, which solid with a low-stretch 1.4 to 3.7 mm thick, essentially made of synthetic and / middle layer consisting of natural fibers Fig. I (2), or layers Fig. II (2), is connected, and that this middle layer consists of fleece and / or fabric, and that it is permeable to water vapor and air and has a density of less than 0.7 and is connected to the plastic material (3), 2nd claim: Shoe according to spoke 1, characterized in that at least the layer (1) is connected to the layer (2) by means of a hot melt adhesive.