The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

A thermoplastic micro-porous polyurethane elastomer material with a micro particle size and a method for preparing the same are provided. The material comprises, by weight, 1-97% of support frame polymer material, 1-97% of pressure-resistant low-resilience polymer material, 0.01-0.5% of nucleating agent, and 0.1-10% of foaming agent. The method comprises the following steps: (1) is feeding polymer materials and the nucleating agent from the front end of a double-screw extruder, feeding the foaming agent from the middle, hot-melting and fully mixing all the raw materials, then further homogenizing hot melt in a static mixer, and afterwards, controlling the pressure of the hot melt and quantitatively delivering the hot melt by a melt pump. (2) is pelletizing the hot melt entering an underwater pelletizing chamber from the melt pump via a die, separating particles carried out by process water, and screening and drying the particles to obtain a target product.

The present invention relates to a pellet mixture including a pellet of a liquid crystal polyester resin composition which contains a liquid crystal polyester resin and an inorganic filler, and a fine powder formed of an organic material, in which a volume average particle diameter of the fine powder is in a range of 10 m to 200 m, and an amount of the fine powder is in a range of 10 ppm to 2000 ppm with respect to the total mass of the pellet mixture.

In a cost-effective and qualitatively better method for producing spacers for a winding unit of an electrical high-voltage device, at least two starting components are mixed together in a mixing chamber under vacuum to form a component mixture. The component mixture is transferred to an extrusion housing, likewise under vacuum, of an extruder in which a transport device is arranged and which is equipped with a mouthpiece delimiting an outlet opening. The extrudate exiting from the mouthpiece is cured by the addition of heat in a vacuum in order to obtain the spacers.

Systems and methods to produce thermoplastic products in a process are described herein. In some cases, the systems and methods may eliminate contact between the product and a heat transfer fluid. The thermoplastic compositions can be useful for roadway markings. In some examples, a formed thermoplastic product is discharged by a product formation apparatus onto a temperature controlled transporter, cooled, and cut to a desired product dimension.

The disclosure relates to a method for producing an extruded sheet, which includes: a) providing calcium carbonate (CaCO.sub.3) powder; b) providing polyvinyl chloride (PVC) powder; c) providing additives as stabilisers, e) heating the mixture until the PVC softens to form a kneadable mass and the CaCO.sub.3 at least partially bonds to the PVC; f) cooling the mass; g) conveying the mass to an extruder; h) melting and extruding the mass by means of an extruder and moulding into a sheet by means of a slotted nozzle; i) pressing the still-warm sheet to a desired final thickness by means of at least two calendar rolls; and j) at least one layer of a pigmented lacquer is applied to the upper side; and k) an additional lacquer is applied to the pigmented lacquer to increase the scratch resistance.

A resin composition superior in stability and external appearance characteristics during/following melt molding; and an extrusion-molded article, an injection-molded article and a blow-molded article that are formed from the resin composition are provided. The resin composition contains an ethylene-vinyl alcohol copolymer as a principle component, and has a heterogeneous nucleation index (f) of less than 0.6 as determined by formula (1) based on a differential scanning calorimetry (DSC) curve obtained by DSC in which the resin composition is cooled at a rate of 150 C./sec from a molten state at 210 C. In the formula (1), Q.sub.total represents an area of a total region surrounded by the DSC curve and a base line, and Q.sub.hetero represents an area of a heterogeneous region that is a part of the total region, falling within a range from the temperature lower than the melting point by 38 C. to a temperature lower than the melting point by 75 C.
f=Q.sub.hetero/Q.sub.total(1)

A heat shrinkable film and a process for regenerating a polyester container using the same. The heat shrinkable film comprises a copolymerized polyester resin comprising a diol component and a dicarboxylic acid component and has a heat shrinkage rate of 30% or more in the main shrinkage direction upon thermal treatment at a temperature of 80 C. for 10 seconds and a melting point of 190 C. or higher as measured by differential scanning calorimetry. It not only solves the environmental problems by improving the recyclability of the polyester container, but also is capable of enhancing the yield and productivity.

The present invention relates to a processing technology for manufacturing seepage irrigation pipe with alternating effluent sections and non-effluent sections, and in particular, to the field of underground seepage irrigation in agriculture and forestry. The processing technology combines the production unit for water-effluent pipes with the production unit for non-effluent pipes, and produces the seepage irrigation pipeline by adjusting the raw material ratios, controlling the spindle speed, spindle acceleration time, and spindle deceleration time of the two pipeline production units, to generate a seepage irrigation pipe with alternating effluent sections and non-effluent sections. The lengths of the effluent sections and non-effluent sections can be adjusted, the pipe wall thickness can also be adjusted by adjusting the inner and outer diameter of the internal mold of the pipe forming unit, a seepage irrigation pipe with alternating effluent sections and non-effluent sections is environment-friendly, efficient, water-saving, and useful for underground irrigation.

The present invention is directed to a process for manufacturing a biodegradable synthetic polymeric material wherein the process has the steps of binding, pelletizing, extruding; and sealing. Moreover, the invention discloses degrading substances which participate in the first three steps (a, b, c) wherein the degrading substances comprise betaine (C.sub.5H.sub.11NO.sub.2), cassava (yucca) starch (C.sub.6H.sub.10O.sub.5), carrot carotene (C.sub.40H.sub.56), water, carbon monoxide, corn glucose (C.sub.6H.sub.12O.sub.6), and a carboxylic acid of 1 to 6 carbon atoms.