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 aims to provide a method for producing a pellet and an apparatus for producing a pellet, including a conveyor belt that conveys a strand formed by melting a composition containing a thermoplastic resin and an additive and then ejecting the molten composition from a feeder, a liquid-spraying device spraying a liquid toward the strand conveyed, a gas-blowing device blowing a gas toward the strand conveyed, a strand cutter cutting the strand conveyed into a pellet, the liquid-spraying device, the gas-blowing device, and the strand cutter being disposed in this order in the conveying direction of the strand, a measurement device measuring a surface temperature of the strand, the measurement device being disposed upstream of the strand cutter in the conveying direction, and an adjustment mechanism adjusting driving of at least one of the liquid-spraying device and the gas-blowing device in accordance with the surface temperature measured.

Methods for processing LLDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LLDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LLDPE recyclates. Processed LLDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LLDPE recyclate and/or pre-consumer polyolefins.

The invention provides a heat-shrinkable polyester film roll containing a paper tube and a heat-shrinkable polyester film wound around the paper tube to form the heat-shrinkable polyester film roll, wherein (1) the film winding length is 2000-20000 m, (2) the film width is 400-2500 mm, (3) the film thickness is 5-30 μm, (4) unevenness in thickness in the film widthwise direction in a film roll surface layer part is 12% or less, (5) the paper tube has an inner diameter of 3 inches, a difference in clearance of the paper tube in a widthwise direction after removal of the film from the film roll is 0.5 mm or less, and a flat compressive strength of the paper tube after removal of the film is 1700 N/100 mm or more, and (6) the average value of winding hardness in the widthwise direction in the film roll surface layer part is 500-850.

To provide a process for producing a film excellent in water vapor barrier property, tensile elongations, and transparency. A resin material containing polychlorotrifluoroethylene (PCTFE) is melted and extruded into a film from an extrusion die, the extruded product is brought into contact with a cooling roll having a surface temperature of at most 120° C. in a state such that the surface temperature of the extruded product is higher than the crystallization temperature of PCTFE to form a film web, and the film web is subjected to heat treatment at from 80 to 200° C. to obtain a film.

An electrical connector with thin interior walls is made by extruding a polymer or polymer composite into a sheet of approximately 0.25 mm to 0.5 mm thickness. The sheet is then calendered to a thickness of about 0.05 mm to 0.3 mm. The calendered sheet is cut into notched sections. The notched sections are assembled and placed into an injection molded housing of a connector. The sections are secured in place by using an adhesive, force fit, snap fit, or welding process to form the thin interior walls of the connector.

The invention, belonging to the field of biological treatment of pollutants and functional materials, presents a method for the preparation of biofilm carrier with biochar fixed by thermoplastic resin. Extrusion grade polyethylene/polypropylene particles are used as the basic material. One or some combination of plant biochar, straw biochar, rice husk biochar, shell biochar, excess sludge and animal waste biochar are used as the functional material. The biofilm carrier with biochar fixed by thermoplastic resin is prepared by the screw extrusion process, which is a simple, flexible and controllable method, and possesses strong adaptability. The reactor with these biofilm carriers has high removal efficiency of refractory organic pollutants.

A core-sheath conjugate fiber for artificial hair including a core part and a sheath part is provide. The core part includes a polyester-based resin composition that contains a polyester-based resin and the sheath part is comprised of a polyamide-based resin composition that contains a polyamide-based resin. The core-sheath conjugate fiber for artificial hair has a single fiber fineness of 20 dtex or more and 80 dtex or less and a coefficient of variation of the single fiber diameter of 10% or more and 40% or less. With this configuration, a core-sheath conjugate fiber for artificial hair that has a touch close to that of human hair and a good gloss, a hair ornament product including the same, and a method for producing the same are provided.

A core-sheath conjugate fiber for artificial hair including a core part and a sheath part is provided. The core part contains a polyester-based resin composition containing a polyester-based resin, and the sheath part contains a polyamide-based resin composition containing a polyamide-based resin. The core-sheath conjugate fiber for artificial hair has a core-to-sheath area ratio of core:sheath=2:8 to 8:2 and includes a hollow part, and the area of the hollow part constitutes 7% or more and 40% or less of the area of a fiber cross section. A core-sheath conjugate fiber for artificial hair that has a touch close to that of human hair and good voluminousness and curl setting property, and a hair ornament product including the same, and a method for producing the same are provided.

A method for the active adjustment of the profile of a film produced with blown extrusion technology, a film obtained with such method and a reel resulting from the winding of the film.