摘要:
The invention relates to a plastics laminate in particular for vehicle glazing. The composite is composed of at least three layers, where the two exterior layers are composed of a transparent polymethyl (meth)acrylate (PMMA) and the internal layer is composed of a thermoplastic polyurethane (TPU). The plastics laminate passes the ECE R43 falling-ball test and has better acoustic properties than prior-art plastics composites of the same size.
摘要:
The present invention relates to a process for the production of coated mouldings, by injecting a moulding composition into an injection mould and cooling the composition to obtain a moulding, and altering the injection mould in such a way as to produce an intermediate space between a surface to be coated of the moulding and the inner surface of the injection mould, and using injection moulding to charge a reactive mixture to the resultant intermediate space, where the temperature of at least a portion of the injection mould is increased for the curing of the reactive mixture.The present invention moreover describes a system for the conduct of the process described above.
摘要:
The present invention relates to a process for the production of coated mouldings, by injecting a moulding composition into an injection mould and cooling the composition to obtain a moulding, and altering the injection mould in such a way as to produce an intermediate space between a surface to be coated of the moulding and the inner surface of the injection mould, and using injection moulding to charge a reactive mixture to the resultant intermediate space, where the temperature of at least a portion of the injection mould is increased for the curing of the reactive mixture.The present invention moreover describes a system for the conduct of the process described above.
摘要:
The invention relates to an injection moulding method for the production of a complex, high optical quality light-diffusing moulded item. The moulding material used comprises a matrix made of polymethyl(meth)acrylate and spherical plastic particles whose particle size ranges from 1-24 μm and the concentration thereof ranges from 0.05-30 wt.-% in relation to the weight of the polymethyl(meth)acrylate. The spherical particles exhibit a refractive index differential in relation to the polymethyl(meth)acrylate matrix of 0.01 0.2.
摘要:
The present invention relates to a speed protection system for monitoring the speed of a rotating shaft in a machine. The speed protection system includes a first speed detection system, a first time delay system, and a first time delay system. The first speed detection system determines a first rotational speed of the shaft in the machine. The first tripping system is coupled to the first speed detection system and to the machine. The first tripping system trips the machine to stop the rotation of the shaft when the first rotational speed is either less than a minimum speed or is more than a maximum speed. The first time delay system is coupled to the first tripping system. The first time delay system prevents the first tripping system from tripping the machine if the first rotational speed is less than the minimum speed until either a first period time has expired or the first rotational speed exceeds a first enabling speed.