摘要:
A method for self-crimping of S/S bi-component fibers on a fiber line includes the steps of main drawing, post-drawing on a cold drawing unit, water application in the tensed state and relaxation at the dryer inlet in the compact closed state, which results in fibers with a novel .OMEGA.-shaped crimping structure.
摘要:
A method for producing polyester bi-component threads on the basis of only one type of polyester is carded out by an "in line" modification of a partial stream with a co-monomer from the substance class of lactones, spinning of the unmodified and modified partial melt stream by means of a bi-component spinneret pack to form bi-component threads, and their further processing and use,
摘要:
A process for producing bottle preforms from the melt of polyethylene terephthalate and/or its copolyesters, includes selectively introducing an inert gas into the continuous flow or partial flow of the polyester melt from a poly-condensation having an intrinsic viscosity between 0.5 and 0.75 dl/g, subsequently bringing the melt to an acetaldehyde content below 10 ppm in a melt after-condensation reactor and to an intrinsic viscosity of 0.75 to 0.95 dl/g and thereafter guiding the melt into an injection molding tool and processing same.
摘要:
A planetary gear for a multiple-screw extruder includes a circular stationary housing having internal teeth, a sun wheel formed from at least one toothed portion of a spindle, and a plurality of main planet wheels formed from at least one toothed free end of a plurality of screws and arranged in a circle. The plurality of main planet wheels are spaced from one another, from the sun wheel and from the internal housing teeth. A plurality of internal and external intermediate planet wheels are arranged between the sun wheel and the main planet wheels and between the main planet wheels and the internal housing teeth, respectively.
摘要:
The invention relates according to a first aspect to a sealing strip (11) for vehicle windows and according to a second aspect to a use of thermoplastics for producing such multilayered sealing strips (11), which comprise at least a first, elastic layer (12) made of a thermoplastic elastomer and a second, harder layer (13), the first layer (12) being implemented to exert a sealing function between a construction element (14) of the vehicle and a surface (15,15′) of a windowpane (16) movable in relation to the sealing strip (11), and the second layer (13) being implemented as a visible cover for at least the largest, otherwise visible part of the first layer (12), and the first layer (12) and the second layer (13) being bonded to one another over essentially the entire length of the sealing strip (11). The sealing strips (11) as well as the use according to the invention are characterized in that the second layer (13) is made of a transparent or translucent polyamide.
摘要:
Multi-layer composites, particularly thermoplastic composites, in form of an extruded hollow section, e.g. tubes or hoses for liquid fuel lines, include a thermoplastic outer layer and at least one further layer, whereinthe outer layer is formed by a mixture based on (A) 80 to 20 parts by weight of at least one polyamide (PA) and (B) 20 to 80 parts by weight of at least one polyamide elastomer (TPE-A), of polyether amides, polyester amides, polyether ester amides, polyether ester ether amides or mixtures thereof, wherein the sum of (A) and (B) is 100 parts by weight, the hollow section being produced at extrusion speeds, of over 20 m/min, so that the produced hollow section has an elongation at break, of over 200%, wherein the elongation at break has been measured at the finished hollow section according to DIN EN ISO 527-2.
摘要翻译:多层复合材料,特别是热塑性复合材料,以挤压中空部分的形式,例如。 用于液体燃料管线的管或软管包括热塑性外层和至少一个另外的层,其中外层由基于(A)80至20重量份的至少一种聚酰胺(PA)和( B)20至80重量份的至少一种聚酰胺弹性体(TPE-A),聚醚酰胺,聚酯酰胺,聚醚酯酰胺,聚醚酯醚酰胺或其混合物,其中(A)和(B) 100重量份,中空部分以超过20m / min的挤出速度生产,使得所生产的中空部分的断裂伸长率超过200%,其中断裂伸长率已经在成品 中空部分符合DIN EN ISO 527-2标准。