Abstract: A reconfigurable capillary liquid chromatography system includes a solvent delivery manager including a first solvent pump assembly including a first pump housing or mount. A base module is further provided including a base module housing which is user accessible, or a base module bracket, and an injection valve for sample injection to a liquid chromatography column. The injection valve has an inlet port for receiving a sample and the injection valve is mounted in or on the base module housing or the base module bracket. The solvent delivery manager is configured to deliver solvent to the injection valve. A reconfigurable control system is also provided for controlling the reconfigurable capillary liquid chromatography system.

Abstract: A solid phase microextraction substrate is disclosed. The solid phase microextraction substrate has a sorbent coating on at least part of a surface thereof. The coating is adapted for extracting at least one analyte component from a fluid matrix. The coating includes sorbent particles in a polymeric adhesive matrix. A majority of pores in each sorbent particle in the coating do not contain substantially any of the polymeric adhesive matrices.

Abstract: The invention relates to a method for producing of a form part, especially of a plane thin-walled fiber composite part, in a mold (1), comprising the steps: a) Providing of the mold (1), wherein the mold (1) comprises a cavity (2) with a nominal form volume (V) for inserting of a reactive mixture, wherein the cavity (2) is delimited by at least one cavity wall section (3) which is elastically deformable during the inserting of the reactive mixture and wherein the modulus of compressibility (K) of the cavity (2) is between 2,000 bar and 10,000 bar; b) Inserting of the reactive mixture into the cavity (2), wherein the reactive mixture is inserted with such a pressure into the cavity (2) so that the cavity volume is increased during the insertion of the reactive mixture due to elastic deformation of the at least one cavity wall section (3) above the nominal form volume (V); c) Letting solidify of the reactive mixture in the cavity (2); d) Demolding of the finished form part from the mold (1).

Abstract: The invention relates to a method for producing of a form part, especially of a plane thin-walled fiber composite part, in a mould (1), comprising the steps: a) Providing of the mould (1), wherein the mould (1) comprises a cavity (2) with a nominal form volume (V) for inserting of a reactive mixture, wherein the cavity (2) is delimited by at least one cavity wall section (3) which is elastically deformable during the inserting of the reactive mixture and wherein the modulus of compressibility (K) of the cavity (2) is between 2,000 bar and 10,000 bar; b) Inserting of the reactive mixture into the cavity (2), wherein the reactive mixture is inserted with such a pressure into the cavity (2) so that the cavity volume is increased during the insertion of the reactive mixture due to elastic deformation of the at least one cavity wall section (3) above the nominal form volume (V); c) Letting solidify of the reactive mixture in the cavity (2); d) Demoulding of the finished form part from the mould (1).

Abstract: The invention relates to a process and a device for the production of polyurethane clock foam, in which the reaction mixture, after flowing through a mixer, flows freely from an outflow opening and then flows through an accumulation chamber, in which a static pressure is built up, a gap and finally an expansion chamber.

Abstract: The invention relates to a method and device for partially or completely foaming the hollow spaces in the ballast structure of a ballast bed, below which a subgrade (7) is located, having a reactive plastic, wherein the reactive components are mixed in a high-pressure mixer (1,26) and wherein the start time for the reactive mixture (4) is adjusted such that the foaming process substantially only begins when the reactive mixture has reached the subgrade (7).

Abstract: The invention relates to a process and a device for the production of polyurethane clock foam, in which the reaction mixture, after flowing through a mixer, flows freely from an outflow opening and then flows through an accumulation chamber, in which a static pressure is built up, a gap and finally an expansion chamber.

Abstract: Cellular or compact polyurethane moldings are produced by conveying at least one isocyanate component and at least one polyol component by a metering machine in dispensing manner into a mixing chamber via component lines to form a polyurethane reaction mixture. Subsequently, the polyurethane reaction mixture is discharged from the mixing chamber into a mold. The pressures of the components are registered by means of pressure transducers in the component lines and are transmitted to a monitoring device. The temporal profiles of the pressures are compared with reference pressure values stored in the monitoring device. A malfunction is signalled in the event of deviation of at least one of the measured pressure profiles from the reference pressure profile beyond a predetermined tolerance threshold.

Abstract: The invention relates to a process for the production of sandwich elements (so-called panels), in which the rising reactive mixture is guided, when it rises, through guide elements arranged between the upper and lower outer layers. This process produces void-free panels having a regular cell structure. The invention also relates to an apparatus useful for the production of such sandwich elements.

Abstract: The present invention relates to a process for the continuous production of polyurethane sandwich elements comprising an upper outer layer and a lower outer layer and a layer of cellular polyurethane lying in between, which is firmly bonded to the outer layers. This invention also relates to an apparatus suitable for the production of polyurethane sandwich elements as described above.

Abstract: The invention relates to a mixing head and to a method of mixing at least one polyol component and at least one isocyanate component and where appropriate additives, to form a polyurethane reaction mixture.

Abstract: The present invention relates to a method for the continuous mixing of at least one polyol component and at least one isocyanate component and optionally additives to form a polyurethane reaction mixture in a stirrer mixer with an axially conveying stirrer.

Abstract: The invention relates to a method of producing rebonded foam blocks in a box mould having a base, a plurality of mutually adjacent mould side walls standing thereupon and a plunger movable in the direction of the base, in which at least one of the mould side walls may be swiveled about a substantially horizontal swivel axis mounted on the base between an outwardly directed position and a substantially vertical position, the method involving mixing the foam flakes with a binder, swiveling at least one of the mould side walls outwards such that the cross-sectional area of the box mould increases from the bottom upwards, introducing the foam flakes into the box mould, adjusting the at least one mould side wall so that the cross-sectional area of the box mould is substantially constant over its height, compressing the foam flakes by means of the plunger to the desired density or foam block height, thereby bonding together the foam flakes and removing the finished foam block from the mould.

Abstract: Plastic moldings reinforced with long fibers are made without the risk of forming loops in a continuous thread or roving fed to a cutting unit at the end of a mold filling operation or tearing thereof during renewed start-up for the next molding filling operation, even at a relatively high take-off speed of the continuous thread. This is achieved by keeping the continuous thread permanently under tension pneumatically against the conveying direction. The device useful for carrying out this process is equipped with at least one tensioning air inlet in the guide for the continuous thread or roving.

Abstract: A process and device are disclosed for manufacturing foam moldings. The parting plane of the mold has a circumferential vacuum channel, the top mold half has a suction channel for quickly evacuating the mold and self-closing expansion channels are arranged at the highest points of the inner cavity of the mold.