Patent application number | Description | Published |
20090104395 | Disc-shaped high-density recording mediums - Optical recording mediums comprising a substrate and a recording layer and a light transmitting layer sequentially disposed on the substrate; wherein the substrate comprises one or more parts selected from the group consisting of injection molded parts, injection molded sandwich structures having a molded surface layer and a molded core layer or two injection molded parts which are UV-bonded, and combinations thereof; and wherein the substrate has a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05. | 04-23-2009 |
20100327470 | PROCESS AND APPARATUS FOR PRODUCING THICK-WALLED PLASTIC COMPONENTS - The invention relates to a process for producing plastic components, in particular optical lenses or optical light-guides, wherein plastic melt is injected via a sprue ( | 12-30-2010 |
20110135934 | Process For The Production Of Polyurethane Composite Components - The invention relates to a process for the production of a composite component, comprising a) a support of a thermoplastic composition, and b) at least one polyurethane layer in direct contact with the support. The process involves (i) in a first process step the melt of the thermoplastic composition is injected into a first mould cavity and is subsequently cooled, the thermoplastic composition comprising: A) 65.0 to 90.0 parts by wt., based on the sum of components A and B, of at least one polymer chosen from the group of aromatic polycarbonates, aromatic polyester carbonates and aromatic polyesters, B) 10.0 to 35.0 parts by wt., based on the sum of components A and B, of an optionally rubber-modified vinyl (co)polymer and C) 0 to 30.0 parts by wt., based on the sum of components A to C, of at least one commercially available polymer additive, And (ii) in a second process step the cavity of the injection mould is enlarged and a gap is thereby generated, and (iii) in the third process step a reactive polyurethane raw material mixture comprising at least one polyisocyanate component, at least one polyfunctional H-active compound, and optionally at least one polyurethane additive and/or process auxiliary substance is injected into the gap resulting in this way between the thermoplastic component and the mould surface of the enlarged cavity, the polyurethane raw material mixture polymerizing completely in contact with the surface of the thermoplastic support to give a compact polyurethane layer or to give a polyurethane foam layer. And (iv) in a fourth process step the composite component is removed from the mould cavity. Preferably the process steps following one another directly. | 06-09-2011 |
20110171459 | TWO-COMPONENT MOULDING PARTS WHICH ARE RESISTANT TO STRESS CRACKING AND WARPING, CONTAINING A PLATELET-LIKE OR FLAKED INORGANIC FILLER WITH THE EXCEPTION OF TALCUM - The invention relates to ductile two-component moulding parts which are resistant to stress cracking and warping under the influence of chemicals, i.e. dimensionally stable two-component moulding parts. | 07-14-2011 |
20110184103 | TWO-COMPONENT MOULDING PARTS WHICH ARE RESISTANT TO STRESS CRACKING AND WARPING, CONTAINING AN ISOTROPIC FILLER - The invention relates to ductile two-component moulding parts which are resistant to stress cracking and warping under the influence of chemicals, i.e. dimensionally stable two-component moulding parts. | 07-28-2011 |
20110278769 | MOULD AND METHOD FOR PRODUCING MULTI-LAYER SHAPED PARTS OF PLASTIC - The invention relates to a mould for producing multilayer plastics mouldings composed of at least two mould halves and of a cavity within which plastic is received, and of a feed system with a feed channel, and also to a process for producing multilayer plastics mouldings. | 11-17-2011 |
20110300325 | DISC SHAPED HIGH DENSITY RECORDING MEDIUM - This invention relates to an optical recording medium in which at least a recording layer and a light transmitting layer are sequentially formed on a substrate and in which the light is illuminated from the light transmitting layer side for recording and/or reproducing information signals, said substrate comprising an injection molded part, and said substrate having a Young's modulus E of at least 2.15 GPa and a Q factor of lower than 160 measured at 25° C. at 2000 Hz in accordance to ASTM E 756-05 05 and a transcriptability of the pit/groove structure of >85%. | 12-08-2011 |
20120100377 | STRESS CRACKING-RESISTANT AND LOW-WARPAGE TWO-COMPONENT MOLDED PARTS COMPRISING TALCUM - The invention relates to ductile and low-warpage, that is to say dimensionally stable, two-component molded parts which are stress cracking-resistant with respect to the influence of chemicals. | 04-26-2012 |
20120213977 | PROCESS FOR PARTIAL SHRINKAGE COMPENSATION IN PLASTICS MOULDINGS - The present invention relates to a process for the production of a plastics moulding, comprising (A) back-injecting a plastic film on a first side with at least one thermoplastic plastic, wherein one or more partial areas of the plastics film are not back-injected, (B) cooling the plastics moulding obtained in step A), and (C) subsequently heating at least those regions of the plastics moulding obtained in step B) that have not been back-injected again. | 08-23-2012 |
20140239532 | PROCESS FOR THE PRODUCTION OF POLYURETHANE COMPOSITE COMPONENTS - A composite and process for the production of a composite component, comprising a) a support of a thermoplastic composition, and b) at least one polyurethane layer in direct contact with the support. | 08-28-2014 |