Hoechst Aktiengesellschaft

Hoechst Trevira Gmbh & Co Kg

Hans-Joachim Bruning

Karl Heinrich

Elke Gebauer

Dieter Disselbeck

Ingolf Jacob

Burkhard Bonigk

Klaus Bender

Bernhard Jahn

Woven or laid structures comprising at least two systems of parallel threads, at least one of these thread systems having more than 10 threads per centimeter and comprising at least 10%, based on the thread system, of hybrid yarns comprising reinforcing filaments and lower melting matrix filaments composed of thermoplastic polymers. In such woven or laid structures, the matrix component can be melted to form textile sheet materials of adjustable gas and/or liquid permeability, which are especially useful for manufacturing airbags.

Woven and laid hybrid yarn structures of adjustable gas and/or liquid

The use is disclosed of modified polyesters, for example isophthalic acid modified polyethylene terephthalate in high frequency welding. The process is useful for incipient or complete melting of shaped structures, especially sheets, films, coats, hollow articles, injection-molded articles, yarns and textile sheet materials comprising such yarns , composed of such polyesters. The process can be carried out with customary high frequency welding equipment.

Process for incipient or complete melting of polyester-comprising shaped

A textile sheet-like structure containing a combination of an inorganic or polymeric organic reinforcing fiber of high tenacity and high modulus of elasticity and a matrix fiber made from a fully fusible aramid is described. The semi-finished product can be employed for the production of fiber-reinforced composite materials.

Textile sheet-like structure comprising reinforcing fibers and

There is described a tape comprising unidirectionally oriented reinforcing and thermoplastic fibers composed of yarns of reinforcing and/or thermoplastic fibers, the yarn density being about 5 to 20 yarns/cm of width and the yarns having a linear density of about 1000 to 3000 dtex, the matrix fibers having been locally incipiently or completely melted on at least one of the tape surfaces to form consolidation points. The tape is suitable as a starting material for producing composite materials.

Semifinished tape product comprising unidirectionally oriented

A non-woven solidified by means of a melt binder is described, which is based on supporting aramid fibers and on binding fibers made of thermoplastic aramids whose melting point is below the melting or decomposition point of said supporting aramid fibers. In the non-woven, the binding fibers are virtually completely melted. The non-wovens are distinguished by high strength.

Growing community of inventors

Augsburg, Germany

Hans-Joachim Bruning