Habasit Ag

Brent Whitehead

Michael Tyler

Marshall Wright

Roland Tröesch

Andreas Lehmann

Bodo Wixmerten

Markus Niederberger

Anton Heimen

Bernd Roser

Roland Troesch

Mark Davies

A belt carcass () comprising one, two, or more than two impregnated layers (); characterised in that i) each impregnated layer () comprises, or consists essentially of, a non-woven fabric () and an impregnation material () comprising, or consisting essentially of, a first thermoplastic, first thermoplastic elastomer, first elastomer or first thermoset and optional additives; whereby, if there are two or more such impregnated layers (), they are adjacent to each other, ii) if the belt carcass () comprises one or more such impregnated layers (), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer () are embedded in the non-woven fabric () of exactly one of said impregnated layers (); or if the belt carcass () comprises two or more such impregnated layers (), then reinforcing filaments extending at least in part in one given direction and being in the form of one filament layer () are sandwiched between two adjacent such impregnated layers (), and iii) the belt carcass is devoid of woven fabrics. This belt carcass can be cut into longitudinal belts or into circular disks or corner belts.

Conveyor belt carcass containing one or more impregnated non-woven fabric layers

A woven fabric comprising: a) A first layer of first uncrimped weft filaments; b) a second layer of second uncrimped weft filaments; wherein for each of the first uncrimped weft filaments there is one corresponding second uncrimped weft filament, and vice versa, to form successive filament pairs of first and second uncrimped weft filaments, c) crimped warp filaments having four different weave types c1-c4, but each weave type consisting of entwining around first uncrimped weft filaments; passing between first and second uncrimped weft filaments; entwining around second uncrimped weft filaments; and passing again between first and second uncrimped weft filaments; and d) uncrimped warp filaments passing between the first uncrimped weft filaments and the second uncrimped weft filaments of all filament pairs; wherein the fabric does not comprise crimped warp filaments which entwine around the first uncrimped weft filaments and the second uncrimped weft filaments in alternating manner. This fabric has good resistance to shear delamination and wear-and-tear delamination of an impregnation () impregnated into the fabric. Accordingly the fabric can be used in belts intended for applications wherein shear stress between the belt's top surface () and the belt's bottom surface () in the belt's longitudinal direction may occur.

Fabric and belt containing it for shear stressing applications

A sheet material () consisting of an mixture consisting essentially of: a) 10-50 percent by weight of random-oriented fibres, and; b) 90-50 percent by weight of a thermoplastic or thermoplastic elastomer; the weight percentages being based on the overall homogeneous mixture; and the sheet material having at room temperature a Shore D hardness of 40 to 85, preferably of 40 to 60, more preferably of 45 to 55. The sheet material () is used as a support in punching applications or as the top layer in punching belts ().

Sheet material and punching tape containing same

Growing community of inventors

Lancashire, United Kingdom

Brent Whitehead