System for drying and expanding of flat materials such as leather
OwnerJiri Dokoupilinventor
Life of this patent
Estimating the term…
Abstract
An apparatus and process for expanding the area and for drying of leather pieces, felts and other similar flat materials. On both sides of the leather elastic foils impervious to air are disposed, a vacuum is connected to the space between the two foils and then forces are applied for enlarging the area of the foils, where the forces are predominantly disposed in the plane of the foils. Thermal energy can be fed to the flat material. The forces can be intermittently applied and they can be provided preferably by hydraulic or pneumatic means.
Claims10
Process for increasing the surface and for drying of flat materials such as leather pieces and hides comprising:
- placing the flat material between two foils impervious to air;
- connecting the space between the two foils to a vacuum;
- and applying forces substantially disposed in the plane of the two foils for expanding the surface area of the two foils and of the flat material.
An apparatus for increasing the surface and for drying of flat materials comprising
- at least two elastic foils impervious to air for disposing the flat material between the foils;
- a vacuum connector attached to one of the foils and connected to a source of vacuum;
- seals disposed between the two foils near the edges of the two foils;
- and
- means for expanding the area of the two foils for thereby simultaneously expanding the area of the flat material.
Dependencies are inferred from the claim text.