摘要:
A textured, layered mold-formed body is produced with a foil laminate in which a top foil of at most partially crosslinked polymer materials and a sub-foil containing a polymer foam material with a density between 35 and 120 grams per liter and a gel content of less than 80 percent are laminated together. The foil laminate is embossed with a texture and treated with electron beams to give the texture enough stability for a subsequent deep-drawing step in which the mold-formed body is produced.
摘要:
A method for producing plastic moldings with a distinct grain/three-dimensional surface structure by grain-imparting negative thermoforming. The plastic molding is subjected to a preheating, and the molding is then pressed into/onto a negative mold that is formed with the negative of the three-dimensional surface structure to be applied. Those portions of the plastic molding that face away from the grain side are subjected to electron beam crosslinking before or during the preheating and the grain-imparting negative thermoforming.
摘要:
A thermoplastic film for the interior paneling of motor vehicles has a top layer with a structured surface layer and a foamed layer on the underside and with indentations or material weak points introduced on the reverse side. The top layer has a residual thickness of at least 35% in the region of the indentations and the foamed layer has a thickness between 15 and 50% of the density of the compact top layer.
摘要:
In a method for producing a thermoplastic film having a three-dimensionally textured, embossed surface, the film is subjected prior to a subsequent shaping kind of processing step to electron-beam crosslinking, which differently crosslinks the individual surface-area regions of the film, so that the regions that undergo greater degrees of drawing out during deforming have different degrees of crosslinking than their neighboring regions.
摘要:
The invention concerns a high-frequency weldable and low-temperature flexible polymer mixture containing a copolymer of ethylene with a polar comonomer selected from the group of vinyl esters of saturated C2-C8 carboxylic acids, C1-C12 alkyl acrylates, and/or methacrylates, with the comonomer content being less than approximately 25% by weight, a terpolymer and/or copolymer of ethylene, propylene, and/or butylene, and a polar comonomer, with the comonomer content being less than approximately 25% by weight, and a thermoplastic polyolefin. The invention also provides a sheet or a molded piece containing the polymer mixture according to the invention and use thereof. Articles made with the polymer exhibit a high degree of low-temperature flexibility and favorable thermal stability together with sufficient high-frequency weldability and favorable welding seam strength.