摘要:
Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a Tg of greater than 45° C. to about 100° C., (b) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a Tg of about −10° C. to about 45° C., and optionally, (c) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000, wherein the Tg of the first and second polyesters differ by about 5 C.° to about 60 C.°. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.
摘要:
A reactor (10) for anaerobic waste water treatment is designed as a loop-type column reactor comprising a central flow channel (20). In the annular space (40) between the central flow channel (20) and the reactor wall, there are positioned carrier elements (50) for immobilizing microorganisms, with flow passages being provided between adjacent carrier elements (50). The lower portion of the reactor (30), below the carrier elements, is designed as a space intended to receive waste water having microorganisms floating therein during operation of the reactor (10). During operation, there are provided both floating microorganisms and microorganisms that are immobilized on the carrier elements. The waste water to be treated flows centrally downward and up again along the carrier elements (40), with the flow being generated in part by the gas development of the microorganisms. The reactor is used to carry out a process for anaerobic waste water treatment, the reactor being suited for waste water treatment in the food processing industry and the feeding stuff industry as well as in the paper industry and the textile industry.
摘要:
Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a polyester having a weight average molecular weight of about 10,000 to about 50,000, and optionally, (b) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.
摘要:
A cutting machine for fabrics, comprising a table, a carriage reciprocating along the same, a pivoted cantilever extending above the table and having an inner arm pivotably mounted about a vertical axis on the carriage and an outer arm articulated on the inner arm, a hand cutter being pivotable about a vertical axis on the outer arm, further comprising switching means for the carriage drive and for controlling the direction of travel of the carriage, a first switching means being provided which is controlled by both arms in order to limit the deviations of the angle formed by the two cantilever arms from an angle of 90.degree., a second switching means controlled by the inner cantilever arm also being provided to limit the deviations of the angle formed by the inner cantilever arm and the direction of travel of the carriage from an angle of 90.degree.. This ensures that when the carriage is started the forces thus occurring at the hand cutter or its guide handle do not interfere with the cutting operation and do not produce any incorrect cuts.
摘要:
A press mold having upper and lower jaws for pressing and molding articles of ceramic material. Each jaw supports a die, at least one of which has a molding matrix. A press ring mounted around the die having the matrix. Upper and lower contoured parts made of synthetic material or rubber are respectively mounted on the upper and lower die by adhesive. Each contoured part has a matrix. One of these matrices has an inner contoured edge which corresponds to the outer edge contour of the molding made by the press mold and having an outer contoured edge at least in the areas of the smaller diameters of the molding with respect to the areas of the largest diameter of the moldings in the direction of the surface of the molding which protrudes beyond this inner contoured edge and which has an even contour, such as a circle.
摘要:
The invention concerns a method for the automatic cutting of fabrics and the like in a cutting plane according to a pattern template which contains the cutting information to be sensed by a sensing device in the form of a single, continuous, intersection-free line which is composed in stages of contour line parts of the pattern parts and of contour line parts of narrow bars which connect the pattern parts, the contour line parts of the pattern parts and the bars meeting together and forming sharp corners, with the help of a cutting device containing a knife, as well as a device for carrying out this process.
摘要:
Solid extrusion coating compositions for metal substrates, a method of extrusion coating a metal substrate, and a metal article are disclosed. The extrusion coating composition is a thermoplastic material and comprises: (a) a polyester having a weight average molecular weight of 10,000 to 50,000 and optionally, (b) a modifying resin, selected from epoxy resins having an epoxy equivalent weight of 500 to 15,000, acrylic resins or polyolefin resins. The extrusion coating composition is applied to a metal substrate in an extrusion process to provide a composition film having a thickness of about 1 to about 40 microns.
摘要:
In order for a laying machine for laying out a fabric web comprising a fabric web guide mechanism for drawing the fabric web off a fabric reel and laying it out as a fabric layer, including a fabric feed device for feeding the fabric web in accordance with the speed of the laying machine, and also comprising a tension relief control means, to be designed as simply as possible from a structural point of view, it is proposed that the fabric web loop be arranged between the fabric feed device and the laid-out fabric layer, that the fabric web loop be formed by a bend of free-falling fabric web piece in a direction extending transversely to the direction of fall, and that the sensing barrier detect a change in the length of the arc of the bend through displacement of the freely hanging bend.
摘要:
A process for fabricating one-piece moldings from a dry ceramic mass, in particular crockery or china such as cups, pots, cans and the like having deep handles, grips, lugs or the like as well as a molding arrangement for carrying out this process. The molding arrangement includes a divided mold matrix and a divided punch which define between them a mold cavity into which a sprayed granular dry ceramic mass is fed. By the application of isostatic pressure via the punch the ceramic mass is molded. The molding is then removed by separating the halves of the punch and mold matrix and the molding is then subjected to a kilning step.
摘要:
The invention relates to a cutting machine, in particular a fabric cutting machine, comprising a bearing table for the material and a supporting structure, which is displaceable along the table, for a cutting tool rotatable about a vertical axis and comprising drive means for driving the cutting tool relative to the table. In the case of a cutting machine of this type the invention has a first angular position detector associated with the cutting tool, this first angular position detector generating signals corresponding to the angular position of the cutting tool. In addition, a guide handle is provided on the cutting tool, this handle having associated signal generating means for producing additional control signals such that, on the basis of the signals from the first angular position detector and the additional signal generating means, control signals may be generated for the drive means of the cutting tool, which enable the cutting procedure to be servo-assisted when the cutting tool is guided by hand.