摘要:
A method of molding resin having substantial amounts of fiber and mineral fillers that provides, without the necessity of a base coat, a metallizable surface of reflector quality is disclosed. The method is useful for making a vehicle lamp reflector with a substantially organic skin over a substantially inorganic core. The organic skin may be metallized without using a base coat. The reflector may even be molded to give a surface gloss sufficient to be metallized without a base coat, and still meet the optical and durability requirements necessary for a vehicle headlamp.
摘要:
Le hublot (14) pour appareil de cuisson comporte une plaque transparente (18) et un cadre de montage (20) surmoulé à la périphérie de la plaque (18). Le cadre (20) est réalisé en matériau thermoplastique ou thermodurcissable. Il comporte des moyens d'attache sur la paroi (10) de l'appareil tels que des méplats de collage (32), des bossages pour vis ou des pattes d'ancrage. L'invention concerne également des portes de four à usage domestique équipées de hublots décrits ci-dessus.
摘要:
The invention relates to a plastic housing comprising a housing component (10) made of a first duroplastic or thermoplastic which is modified with heat-conductive fillers; at least one sealing element (29a, 29b) which is made of a second elastic plastic, the at least one sealing element (29a, 29b) being bonded to and/or injected onto the housing component (10) in a formfitting manner; and at least one covering cap (33, 34) which is placed on the housing component at an end portion (10a, 10b) of the housing component (10). The sealing element (29) seals a transition surface (35, 36) between the housing component (10) and the covering cap (33, 34) placed on the housing component (10). The invention further relates to a method and an injection molding device for producing the plastic housing.
摘要:
The invention provides an improved process for molding articles having a bulk material and an auxiliary material, such as an additive, a comonomer, or a catalyst, present in the bulk material as a fixed concentration strip or in a concentration gradient in the direction from the surface to the interior. The invention is especially useful for concentrating surface-enhancing auxiliary materials at the surface of an article without wasting the auxiliary material in the interior of the article where it provides minimal value. This invention is also applicable to concentrating an interior-enhancing auxiliary material in the interior of the article without degrading surface sensitive properties. The method for manufacturing an as-molded article having a bulk material and an auxiliary material provided therein generally comprises injecting a moldable bulk material composition into a mold with an essentially laminar flow profile such that the earlier injected material will reside at the surface of the mold (i.e., the surface of the manufactured article) and the later injected material will constitute the interior portion of the article, and controlling the injection of the auxiliary material during filling of the mold with the bulk material to direct the auxiliary material to a desired location within the bulk material.
摘要:
A method of molding resin having substantial amounts of fiber and mineral fillers that provides, without the necessity of a base coat, a metallizable surface of reflector quality is disclosed. The method is useful for making a vehicle lamp reflector with a substantially organic skin over a substantially inorganic core. The organic skin may be metallized without using a base coat. The reflector may even be molded to give a surface gloss sufficient to be metallized without a base coat, and still meet the optical and durability requirements necessary for a vehicle headlamp.
摘要:
A method of molding resin having substantial amounts of fiber and mineral fillers that provides, without the necessity of a base coat, a metallizable surface of reflector quality is disclosed. The method is useful for making a vehicle lamp reflector with a substantially organic skin over a substantially inorganic core. The organic skin may be metallized without using a base coat. The reflector may even be molded to give a surface gloss sufficient to be metallized without a base coat, and still meet the optical and durability requirements necessary for a vehicle headlamp.
摘要:
- Procédé de moulage par injection, à froid, de matériaux composites thermodurcissables, caractérisé en ce qu'il consiste successivement et sans temps-mort entre les différentes phases, à introduire et malaxer les divers constituants du matériau à injecter, à introduire le mélange obtenu, dès la fin du malaxage et directement, de la zone de malaxage (1,21) dans l'unité d'injection (4,26), puis à injecter ledit mélange, à la température à laquelle il se trouve, dans un moule chauffé (17,32) par l'intermédiaire d'une filière (13,31) de section allongée et de relativement faible hauteur, et à sectionner en fin d'injection la nappe de matière au droit de la filière et au droit de l'orifice d'injection dans le moule. L'invention concerne également un dispositif pour la mise en oeuvre de ce procédé.
摘要:
The invention relates to a method for producing ceramic brake discs, comprising the following steps: a) producing a BMC compound (2) with a matrix consisting of phenol resin and with carbon reinforcement fibres, the length of the carbon fibres being between 6 mm and 50 mm; b) producing a green compact of the ceramic brake discs from the BMC compound (2) in a transfer moulding or injection compression moulding process, c) pyrolysing the green compact in order to produce a porous moulded body; and d) melt-infiltrating the porous moulded body with a melt, preferably a silicon melt, in order to produce a moulded body with reaction-bonded fibres.
摘要:
The invention relates to a method for producing ceramic brake discs, comprising the following steps: a) producing a BMC compound (2) with a matrix consisting of phenol resin and with carbon reinforcement fibres, the length of the carbon fibres being between 6 mm and 50 mm; b) producing a green compact of the ceramic brake discs from the BMC compound (2) in a transfer moulding or injection compression moulding process, c) pyrolysing the green compact in order to produce a porous moulded body; and d) melt-infiltrating the porous moulded body with a melt, preferably a silicon melt, in order to produce a moulded body with reaction-bonded fibres.