A metered pump system for hydrocapsule encapsulation is disclosed. In at least one embodiment, a system for hydrocapsule encapsulation includes a nozzle assembly and metered pump for encapsulating discrete droplets of liquid by generating a continuous coating of a polymerizable liquid which is substantially immiscible with the core liquid. The metered pump system is configured to control a stroke length and a pulsation speed to attain constant shear with each pump of water, and a volume of water in each stroke and a speed of the stroke is controlled. In at least one embodiment, the nozzle includes a material feed port, a polymer feed port, a water feed port, and an encapsulated material exit port. In at least one embodiment, the metered pump is configured for use in a hydrocapsule encapsulation system having a pressure control system, a water control system, sparging column, and ultraviolet exposure chamber system.

A metered pump system for hydrocapsule encapsulation is disclosed. In at least one embodiment, a system for hydrocapsule encapsulation includes a nozzle assembly and metered pump for encapsulating discrete droplets of liquid by generating a continuous coating of a polymerizable liquid which is substantially immiscible with the core liquid. The metered pump system is configured to control a stroke length and a pulsation speed to attain constant shear with each pump of water, and a volume of water in each stroke and a speed of the stroke is controlled. In at least one embodiment, the nozzle includes a material feed port, a polymer feed port, a water feed port, and an encapsulated material exit port. In at least one embodiment, the metered pump is configured for use in a hydrocapsule encapsulation system having a pressure control system, a water control system, sparging column, and ultraviolet exposure chamber system.

A melt-formable ethylene-vinyl alcohol copolymer composition and a multilayer structure are substantially free from heat coloration. The melt-formable ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an alkali earth metal compound; and (C) an iron compound; wherein the iron compound (C) is present in an amount of 0.01 to 20 ppm on a metal basis based on the weight of the ethylene-vinyl alcohol copolymer composition.

Provided are resin particles including columnar resin particles each including filaments of a fibrous material, wherein the filaments of the fibrous material are aligned in an axial direction of each of the columnar resin particles.

An apparatus and process to maintain control of the temperature of low-melting compounds, high melt flow polymers, and thermally sensitive materials for the pelletization of such materials. The addition of a cooling extruder, and a second melt cooler if desired, in advance of the die plate provides for regulation of the thermal, shear, and rheological characteristics of narrow melting-range materials and polymeric mixtures, formulations, dispersions or solutions. The apparatus and process can then be highly regulated to produce consistent, uniform pellets of low moisture content for these otherwise difficult materials to pelletize.

An apparatus and process to maintain control of the temperature of low-melting compounds, high melt flow polymers, and thermally sensitive materials for the pelletization of such materials. The addition of a cooling extruder, and a second melt cooler if desired, in advance of the die plate provides for regulation of the thermal, shear, and rheological characteristics of narrow melting-range materials and polymeric mixtures, formulations, dispersions or solutions. The apparatus and process can then be highly regulated to produce consistent, uniform pellets of low moisture content for these otherwise difficult materials to pelletize.

An ethylene-vinyl alcohol copolymer composition contains: (A) an ethylene-vinyl alcohol copolymer; (B) an antioxidant; and (C) a sorbic acid ester; wherein the sorbic acid ester (C) is present in an amount of 0.00001 to 10 ppm based on the weight of the ethylene-vinyl alcohol copolymer composition; wherein the weight ratio (B)/(C) of the antioxidant (B) to the sorbic acid ester (C) is 500 to 1,000,000. The resulting ethylene-vinyl alcohol copolymer composition is less susceptible to coloration.

An apparatus (10) for producing reshaped plastic granules from a plurality of initial granules (12) with a predetermined shape is disclosed comprising: a feeding unit (20) for continuously receiving a plurality of said initial granules (12), a pressing unit (30) for mechanically reshaping the initial granules, said pressing unit comprising at least two opposite pressing surfaces (32) with a gap (34) therebetween, the width (W) of said gap ranging from 0 mm to 0.5 mm, a receiving chamber (40) for receiving the reshaped final granules (13) from the pressing unit, and a frame (50) for supporting the feeding unit, the pressing unit and the receiving chamber. A method is also provided to produce final granules by mechanically reshaping the initial granule, each final granule having a certain surface-to-volume ratio and a primary thickness of at most 0.7 mm within substantially the entire volume of the final granules.

The embodiments of the present application provide a method for making continuous micro-irrigation tubing, the continuous micro-irrigation tubing so made, a method for performing irrigation using the said continuous micro-irrigation tubing, and the application of the said continuous micro-irrigation tubing in agricultural irrigation, wherein the method for making continuous micro-irrigation tubing comprises: preconditioning a filler; blending the preconditioned filler with high-pressure polyethylene resin at a predefined weight ratio and making said filler and resin into filler pellet; making preformed tubing from the filler pellet; and threading the preformed tubing into a high-temperature extractor in which continuous extraction is performed to make continuous micro-irrigation tubing. The method enables the making of continuous micro-irrigation tubing containing micro-pores on the tubing wall. After the continuous micro-irrigation tubing is filled with water, water exudes through the micro-pores.

A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.