Patent application number | Description | Published |
20110309542 | METHOD AND APPARATUS FOR THE PRODUCTION OF A TURF YARN - The invention relates to a method and an apparatus for producing a turf yam for artificial turf. According to the invention, several monofilaments or ribbons are produced from one respective polymer material in two parallel extrusion processes, the turf yarn being formed by combining several monofilaments or ribbons obtained in the first extrusion process with several monofilaments or ribbons obtained in the second extrusion process. In order to improve especially the elasticity of an artificial turf carpet made from said turf yarn, the monofilaments or ribbons obtained in one of the extrusion processes are crimped before being combined, the crimped monofilaments or ribbons and the flat monofilaments or ribbons being produced in parallel next to each other and being joined in a winding station by means of a tie thread. | 12-22-2011 |
20110318442 | APPARATUS FOR PRODUCING MONOFILAMENTS OR RIBBONS - The invention relates to an apparatus for producing monofilaments or ribbons which are guided in parallel through several treatment devices in an extrusion process. For this purpose, an extrusion device is connected downstream in several treatment device, wherein for guiding the monofilaments or ribbons at least one rod-shaped guide element is provided which has a contact surface for guiding the ribbons or monofilaments. In order to enable low-friction and wear-resistant guidance, in particular when using very elastic monofilaments or ribbons, the contact surface has a multiple coating comprising several coating materials that are applied in several single coatings, each with a different layer thicknesses, wherein the single coatings are formed in a sandwich-like manner on the contact surface. | 12-29-2011 |
20120139150 | Method And Device For Producing A Grass Yarn - The invention relates to a method and a device for producing a grass yarn for artificial turf. A film is produced from a polymer material in an extrusion process and divided into individual strips. The strips are crimped before being coiled into spools. The aim of the invention is to achieve a structure which particularly matches natural grass. According to the invention, this is achieved in that the film or the strips are fibrillated by a needle roller before crimping and the strips are separated after on and individually crimped independently of each other. | 06-07-2012 |
20130055536 | Method and Apparatus for Fibrillating Synthetic Ribbons - The invention relates to a method and apparatus for fibrillating synthetic ribbons in an extrusion process for the production of, for example, grass fibers. The extrusion process creates a sheet of ribbons from an extruded foil or a multiplicity of extruded monofils, and stretches them conjointly. The ribbons are led side by side in a parallel arrangement along the circumference of a fibrillating roll with a partial wrap. To produce a pattern of fibrillation irrespective of the thickness of the ribbons and the elasticity of the ribbons, the invention provides that a multiplicity of short partial cuts is made in the ribbons by a plurality of successively engaging rows of blades on the fibrillating roll each having a multiplicity of projecting cutting tips. | 03-07-2013 |
20130193609 | METHOD AND DEVICE FOR PRODUCING STRAND-SHAPED GOODS - The invention relates to a method and to a device for producing strand-shaped goods in the form of small bands, fiber strands, monofilaments, or films, which are extruded from a polymer melt. After cooling in a cooling bath, a thermal treatment occurs between rolling feed units, wherein the goods are brought into contact with a hot medium. In order to be able to perform an individual thermal treatment depending on the thermoplastic material, the hot medium is provided optionally in the form of hot air or hot water according to the invention. For this purpose, the heating apparatus is formed from a forced-air oven and a water bath apparatus, which can be optionally activated to thermally treat the goods. | 08-01-2013 |
20130236583 | Device For Producing Strand-Shaped Products - The invention relates to a device for the production of strand-shaped products such as synthetic bands, fiber strands, monofilaments, or films, which are extruded from a polymer melt. The device includes an extrusion device, a cooling device, several rolling feed units and several processing devices mounted between the rolling feed units. In order to obtain short control paths and compact machine units, the processing devices according to the invention are arranged in tiers one above the other, wherein the rolling feed units face each other at both ends of the processing devices so that the product passes through the processing devices in the opposite direction. | 09-12-2013 |
20140048983 | METHOD AND DEVICE FOR PRODUCING SYNTHETIC GRASS FIBERS - The invention relates to a method and to a device for producing synthetic grass fibers for artificial turf. For said purpose, a plurality of strips formed from a divided film or a plurality of individually extruded monofilaments made of a polymer material are produced in an extrusion process. The strips or monofilaments are then stretched and wound individually or as a fiber bundle to form coils. According to the invention, in order to in particular influence the physical properties of the synthetic grass fibers in addition to the visual properties, the roughness of the surfaces of the strips or monofilaments is changed before or after the winding. For said purpose, the device according to the invention has a treatment apparatus, the means of which are suitable for changing the surface roughness of the strips or monofilaments. | 02-20-2014 |