Abstract: A transport or drive belt includes: warp threads extending in a longitudinal direction; and weft threads extending between side edges. The weft threads and the warp threads cross each other at least sectionally with a positive inclination or a negative inclination deviating from a right angle. The weft threads follow a wavy course.

Abstract: A transport or drive belt includes: warp threads extending in a longitudinal direction; and weft threads extending between side edges. The weft threads and the warp threads cross each other at least sectionally with a positive inclination or a negative inclination deviating from a right angle. The weft threads follow a wavy course.

Abstract: The present invention relates to a stretched, multilayer, transparent film which is reflection-reduced on at least one side, consists predominantly of polypropylene and is very suitable as window film for envelopes.

Abstract: The invention relates to a white-opaque biaxially orientated multilayer film with good heat-sealing properties and with a paper-like appearance on at least one side, comprising an opaque core and at least one outer layer made of:10-15% by weight of an isotactic polypropylene having a density of 0.9-0.91 g/cm.sup.3 and a melt-flow index of 0.5 g/10 min to 8 g/10 min at 230.degree. C. under 21.2 N load (determined to DIN 53735),5-15% by weight of a low-density linear copolymer of ethylene, modified with rubber and with maleic acid anhydrite,40-80% by weight of a statistical propylene/ethylene copolymer with 2 to 6% by weight of ethylene or statistical terpolymers of propylene, ethylene and butylene with a comonomer content of <15% by weight and a butylene content of <7% by weight and5-15% by weight of an inorganic filler, preferably rutile-type titanium dioxide with an average diameter of 200 nm.

Abstract: The invention relates to oriented, sealable polypropylene film combining an improved water vapor barrier effect with a considerably reduced coefficient of friction for packaging purposes, characterized in that they are free from polydimethyl siloxane and have the following structure:A B C B Awherea) C is the core layer consisting of polypropylene and a hydrocarbon resin, which has a molecular weight of up to about 2000 g/mol and a softening point above 130.degree. C., and 0.05 to 0.5% by weight erucic acid amide,b) the B's are two jacket layers of highly isotactic polypropylene (isotacticity >94%) free from hydrocarbon resin, the ratio between the thickness of the jacket layer and the thickness of the base layer being between 0.01 and 0.1,c) the A's are two surface layers of a heat-sealable polyolefin copolymer or terpolymer, these surface layers containing at least one antiblocking agent, an antistatic agent and, as lubricant, 0.05 to 0.5% by weight erucic acid amide.

Abstract: The invention relates to an oriented sealable polypropylene film combining an improved water vapor barrier effect with considerably reduced global migration for packaging purposes and having the following layer structure:A B C B Awherea) C is a base layer of polypropylene and a hydrocarbon resin which has a molecular weight of up to about 2000 g/mol and a softening point above 130.degree. C.,b) the B's are jacket layers of highly isotactic polypropylene (isotacticity >94%) free from hydrocarbon resin, the ratio between the thickness of a jacket layer and the thickness of the base layer being between 0.01 and 0.1,c) the A's are two surface layers of a heat-sealable polyolefin copolymer or terpolymer, these surface layers containing at least one antiblocking agent, a lubricant and an antistatic agent.

Abstract: The invention relates to sealable polypropylene films having an improved water vapor barrier effect through the following layer structure:ABCBAwherea) C is the base layer of highly isotactic polypropylene with an isotacticity of >94% and a hydrocarbon resin which has a molecular weight of up to about 2000 g/mol and a softening point above 130.degree. C.,b) the B's are two jacket layers of highly isotactic polypropylene (isotacticity >94%) free from hydrocarbon resin, the ratio between the thickness of the jacket layer and the thickness of the base layer being between 0.01 and 0.1,c) the A's are two surface layers of a heat-sealable polyolefin homopolymer, copolymer or terpolymer, these surface layers containing at least one antiblocking agent, a lubricant and an antistatic agent.