Abstract: The invention relates to a process permitting the dissolving of the skin or hide and the recovery of the hair.After rehydrating and scouring the skins or hides are plumped and predegraded at an alkaline pH and then dissolved by enzymatic action. The hair obtained is in a satisfactory condition and can be subsequently utilized.
Type:
Grant
Filed:
July 22, 1975
Date of Patent:
April 26, 1977
Assignee:
Omnium de Prospective Industrielle, S.A.
Abstract: This invention concerns a process of manufacturing panels composed of units in, for example, ceramic assembled by a thermoplastic material.The interstitial spaces between the units are filled with granules of thermoplastic material. After heating to the highest possible temperature but just lower than the degradation temperature, the units are firmly joined to one another.Such panels can be used as decorative floor or wall-coverings.
Type:
Grant
Filed:
October 20, 1972
Date of Patent:
December 28, 1976
Assignee:
Omnium de Prospective Industrielle, S.A.
Abstract: This invention relates to a composite covering, particularly useful as floor covering, constituted by an underlayer of a density varying as a function of the thickness and by a light velvet-type woven fabric with a weight per surface unit of between 70 and 120 g/m.sup.2, said fabric, constituting the visible face of the covering, being glued to the underlayer on the side of the zone of high density.
Type:
Grant
Filed:
March 25, 1975
Date of Patent:
October 12, 1976
Assignee:
Omnium de Prospective Industrielle
Inventors:
Michel S. M. Lefebvre, Joseph Davidovits
Abstract: In apparatus for continuously treating a thread, for example a textile thread, including squeezing and/or drying a humid thread wherein the humid thread is passed into a zone traversed by a current of air at a pressure lower than that prevailing about the thread during the operation that provoked its humidification, the zone comprises a chamber having an inlet and an outlet between which there is a helical conduit.
Type:
Grant
Filed:
February 25, 1974
Date of Patent:
October 5, 1976
Assignee:
Omnium de Prospective Industrielle
Inventors:
Michel S. M. Lefebvre, Jean-Claude M. L. Hennion
Abstract: An improved process for treating fabrics and similar cellulosic materials with liquid ammonia by conventional methods to achieve improved properties, which improvement consists of subjecting the fabric to pneumatic squeezing by means of a compressed gaseous ammonia stream.
Type:
Grant
Filed:
November 20, 1973
Date of Patent:
March 9, 1976
Assignee:
Omnium de Prospective Industrielle, S.A.