摘要:
The invention relates to a method and an apparatus for producing a film web made of thermoplastic material in which the thermoplastic material is extruded in at least one layer as plastic melt from a wide-slit nozzle in an extrusion direction and subsequently led away over at least roller, wherein tensile forces are exerted in the extrusion direction and transversely to the extrusion direction in order to stretch the film web longitudinally and transversely, wherein during application of the tensile forces in and transversely to the extrusion direction the film web has a temperature at least corresponding to the melting temperature of the same.
摘要:
A roller frame including at least two rollers mounted in a housing between which a nip can be formed. The ends of the rollers are supported in rotary fashion in bearings and at least one of the rollers is embodied as an advancing roller and has an adjusting system by which it is possible to move the bearings of the advancing roller, thus changing the nip. The adjusting system has a rack and a pinion whose teeth engage with those of the rack and can be driven to rotate by a motor. It is possible to change the distance between the pinion and the rack by changing the tooth engagement depth between them.
摘要:
A drawer configured to be extended from and retracted into a furniture body. The drawer includes a bottom part; a front panel; two lateral frames; and a back wall connected via a corner joint to an end region formed with one of the lateral frames. Each corner joint including a first connecting part and a second connecting part pivotably connected to the first connecting part. The second connecting part includes detent means for connecting the second connecting part to either the first connecting part or the back wall. The first connecting part is connected to an adapter associated with the end region formed by the back wall with one of the lateral frames.
摘要:
A method and device for electrically braking an electric drive in a machine for processing printing material, includes a power electronics connected between the electric drive and a DC voltage intermediate circuit. A further electric braking device is switchable between the electric drive and the power electronics. Upon a failure of a power system, a computer initiates a generator-type braking operation through the power electronics. The further electric braking device is switched on upon the failure of the power electronics.
摘要:
A method and a device for producing a film made of a thermoplastic material, wherein a plastic melt is blown up into a film bubble and is shaped into a desired film by a calibrating arrangement, and a downstream arranged flattening device. For providing as contactless as possible a guidance, calibration and flattening, film guidance elements are used with a laminar uniform air cushion between the film guidance element and the surface of the film bubble, without contact between the surface of the film bubble and the film guidance element.
摘要:
The invention relates to polymer-modified polyisocyanates and to polyurethanes prepared therefrom, and to their use in the production of polyurethane molded bodies. The polyisocyanates are modified with thermoplastic vinyl polymers having a number average molecular weight of from 15 to 90 kg/mol.
摘要:
An apparatus and a method for the selection of printing materials in a machine processing printing materials has at least one control computer. The operating data of the machine processing the printing materials is logged by the computer and a tolerance limit corresponding to the operating data registered is stored in the computer. When the tolerance limit is exceeded during a time interval, the printing materials produced in this time interval are registered in the control computer.
摘要:
Passenger conveyor (2) including an endless conveyor band (6) connected to a drive chain (8) at each lateral edge thereof and driven by a conveyor band drive (40) including an electric motor (48) and one drive output device (42) at each lateral edge of the conveyor band (6) for driving the respective drive chain (8), characterised in that the conveyor band drive (40) is arranged laterally outside of the conveyor band (6).
摘要:
Passenger conveyor (2) including an endless conveyor band (6) comprised of a plurality of tread elements (4) connected to and driven by a drive chain (8) at each lateral edge thereof, a moving flange moving in use together with the conveyor band (6), the moving flange being comprised of a plurality of discs (16) attached to the tread elements (4) and a plurality of bridges (18) each attached alternating between two consecutive discs (16), wherein a groove and tongue (70) engagement is provided between bridge (18) and disc (16), characterised in that an insert (64) made of a plastic material is provided between bridge (18) and disc (16).
摘要:
The present invention relates to a method for elucidating the primary structure of biopolymers, in which a biopolymer to be investigated is cleaved into fragments and, after that, subjected to a mass spectrometric analysis (20) resulting in mass spectra being obtained, and in which known algorithms, are used for a first sequence analysis (30) of the fragments in order to determine a primary structure of the biopolymer using the mass spectra. The mass spectra are classified in dependence on results of the first sequence analysis (30), resulting in at least one first spectrum class, to which a known biopolymer can be assigned, and one second spectrum class, to which no known biopolymer can be assigned, being obtained. A further analysis (50) of mass spectra of the second spectrum class is carried out in dependence on the known biopolymer.