Abstract:
Disclosed is a polyester yarn, wherein a room-temperature strength-elongation index (X0) indicating a ratio (T0/S0) of tensile strength (T0) to tensile elongation (S0) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X1) indicating a ratio (T1/S1) of tensile strength (T1) to tensile elongation (S1) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity (RH) of 95±5% for 168 hours, are optimized in a predetermined range.
Abstract:
A method for making sheets and/or plates that are thermoformable as of a temperature of 80-90° C. and heat-tackifiable as of 80-90° C., and suitable for use as a heat-tackifiable reinforcing material. According to the method, 30-70 wt % of granules of one or more polymers that have a low melting point (50-90° C.) and are thermoformable as of 80-90° C. are mixed with 70-30 wt % of one or more polymers with a higher melting or softening point, in the form of granules or a powder having a particle size greater than around 500 &mgr;m, and preferably of 500-1000 &mgr;m, both kinds of polymers being thermoplastic and at least partially compatible, and optionally with the usual additives; the mixture is extruded under low-shear conditions at low temperatures of 100-140° C. to give a mixture having a pasty consistency that is insufficient to form a uniform mixture of molten polymers; and, after extrusion, and optionally once a fabric base (9,12) has been added to the extruded product, the product is laminated or calendered at a high pressure and at a temperature of around 100° C. to reduce the thickness thereof, then cooled to less than 30° C. before the end of the lamination or calendering process.
Abstract:
The invention relates to a method for coating fibers shaped as fiber strands (roving and mats) using a fluidized bed techniques, wherein (i) the desired composition of the individual coating constituents is directly applied from the fluidized bed without previous compounding and (ii) the individual coating constituents contained in the fluidized bed are additionally mixed in the mass so that dissociation of individual constituents is substantially avoided. The invention also relates to a device for implementing the method.
Abstract:
A composite media comprising a backing sheet, a covering sheet, and a layer disposed between said backing sheet and said covering sheet, said layer having particles of active ingredient, binder particles, and stabilizing particles, wherein the active particles are coalesced by the binder particles, wherein each of the stabilizing particles bonds with both the backing sheet and the covering sheet, and wherein the stabilizing particles are larger than the binder particles.
Abstract:
The inventive polymeric membrane has the feature that porous agglomerates of at least one powder of hydrophobic thermoplastic material, formed by influence of heat, are fixed onto at least one side of a carrier material or of a mixture of carrier materials by a mechanical anchoring in the carrier material and/or by an adhering onto the carrier material.Also a method of producing of this polymeric membrane and its use are described.
Abstract:
The present invention provides a heat-resistant, laminated conveyer belt comprising a reinforcing layer obtained by impregnating fluoroplastic into a heat-resistant fiber base cloth, drying and sintering the base cloth and a wear-resistant layer, formed on the reinforcing layer, obtained by impregnating fluoroplastic into a base cloth formed by weaving heat-resistant fiber in the form of a knit weave, drying and sintering the base cloth, and its manufacturing method.
Abstract:
In a method of making artificial leathers and other water vapor permeable flexible sheet materials, a layer of polymer-containing mixture adhering to a temporary support is coagulated by suitable liquid treatment, dried, and then stripped from the support.
Abstract:
Organic fine particles and a slip-resistance agent composition which are capable of providing excellent slip-resistance to a base material. The organic fine particles contain a polymer having a repeating unit formed of: (I) a hydrophobic monomer that has a single ethylenically unsaturated double bond and at least one branched or cyclic hydrocarbon group having 3-40 carbon atoms; and, if necessary, (II) a cross-linking monomer having at least two ethylenically unsaturated double bonds. The slip-resistance agent composition contains (A) the organic fine particles and (B) an aqueous medium.