DE1007214B - Sole core made of fillers bound by glue and process for its manufacture - Google Patents

Description

GERMAN

The shoe industry needs so-called for the production of light shoes on a large scale Sole cores as semi-finished products, which are normally not made in the shoe factory itself, but from factories for shoe bottom parts. These sole cores are used in the shoe factory for heels or for Whole soles are used, usually glued on the sides and with an outsole and / or a heel run stain are provided.

Such sole cores must be of different hardness in their different sections, because in the A hard structure is required in the heel area, and the joint must also be stiff during the transition to the outsole and the area of the outsole itself should be flexible and soft. The top game the core may have to be made hard again.

Such sole cores were previously made from individual parts with different hard structures, the are glued or nailed together and require a number of operations so that they are expensive.

The sole cores according to the invention are intended for further processing in the shoe industry. They meet the requirements in terms of light weight and air permeability and are In addition, they are inexpensive to manufacture because they are manufactured in a single operation and as a material for the most part waste products can be used.

They consist of fillers that are bound by glue, with such. B. cork flour, Cork grist, wood flour, wood shavings, soft glass wool or similar materials are used. As a binder Adhesives based on synthetic resin, latex or rubber or the like are provided, although not unmentioned it should remain that it is already part of the prior art, such fillers with the aforementioned To use glue for the same purpose.

What is new, however, is a sole core which, in terms of its length, consists of two or more sections exists, the different hardness respectively. Have flexibility, this diversity of the Material within the individual, gradually merging sections through the use is brought about by differently hardening adhesives that serve as binders for the fillers.

The drawing shows an example embodiment of the invention in a schematic Representation, in longitudinal section.

With 1, 4 and 5, the individual sections of the sole core are designated. 2 is an adhesive on the aforementioned basis. In the heel area it is hard and firm after its drying or hardening maintains this state. He binds the individual sole core from bound by glue Fillers and processes for his

Manufacturing

Applicant:
Alfons Saum, Uerzell (district of Schlüchtern)

Alfons Saum, Uerzell (district of Schlüchtern),
has been named as the inventor

Filler parts 3 and at the same time forms an irregular, but firm and hard framework, which in connection with the filler the static loads caused by the human body and also withstands the impact loads caused by the appearance. An adhesive is used for the joint section 4, which is less hard after its solidification than that used in section 1 for the paragraph Glue. An adhesive that remains soft and elastic is used for section 5 of the sole core, variations are possible in order to fully meet the requirements of the industry to be able to. In the area where the heel merges into the joint, the mix different glue, so that there is a gradual change in the consistency of the sole core. This is one of the main requirements that the shoe industry would like to see fulfilled.

The manufacture of the sole cores according to the invention is relatively simple in practice because it only two or more mixtures are mixed, the filling material 3 remaining the same and only the individual adhesives are different. The hardening mixture intended for the sole core section 1 is first introduced into the production mold (compression mold), then the one for the one or the other other sections certain mixtures with that which remains soft or elastic after its solidification Glue.

Since the introduction of the mixture into the mold does not take place in one operation, but in several steps, it is only necessary to ensure that the core material is removed from the correct container during production. There is hardly any extra work, apart from the fact that the mixtures have to be mixed in two or more vessels. The W ^T MPACT the adhesive to achieve a different

709 506/93

The compounds intended for the individual sections can also be used to increase the sole structure of the sole a plasticizer or hardener of the usual type can be added in a manner known per se. It is also possible for the same purpose, the production form different in its individual sections to heat strongly.

The sole core according to the invention meets all the requirements that are placed on such in terms of its further processing in the shoe, and is also inexpensive to manufacture.

Claims (3)

Patent claims: 1. Sole core for further processing in the shoe industry, made from fillers bound by glue, such as cork flour, cork grist, wood flour, glass wool or the like , 5), which have different hardness or flexibility and that the differences in the material within the individual, gradually merging sections (1, * t, 5) through the use of differently hardening adhesives (2), which act as binders for the Fillers (3) serve, is brought about. 2. sole core according to claim 1, characterized in that the adhesive (2) as a binder for the fillers in a manner known per se a plasticizer or a hardener in sections is added. 3. A method for producing the sole core according to claims 1 and 2, characterized in that that the production mold is heated to different degrees in sections. Considered publications:
German patent specification No. 828 504. 1 sheet of drawings 709 5W93 4.57