Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines.

A disposable eggshell eco-friendly material and manufacturing method are disclosed. The disposable eggshell eco-friendly material, for volume ratio, includes 50%-80% of calcined eggshell powder, 10%-48% of biodegradable polymer, 1%-5% of natural degradation agent, and 1%-5% of natural binding agent, which are subjected to a mixing and stirring step according to such ratios, and then subjected to a pelletizing step to be first prepared as a plurality of disposable eggshell eco-friendly material pellets, and the disposable eggshell eco-friendly material pellets being then subjected to a shaping and forming step by means of one of film blowing, extruding, vacuum forming, bottle blowing, injecting, and drawing, to obtain a disposable eggshell eco-friendly material product that is disposed of after one time of use, showing properties of being non-toxicant contact for human body and food, water resistance, bacterium resistance, fast degradation, and degradation of one-time-use disposition and burying, soil composted as being fertilizing, to thereby achieving recycled use of waste eggshell and natural degradation after being disposed of after one time use, and being of greening and reusability.

The invention relates to a process for producing a polypropylene composition using a first extruder comprising successive zones comprising a first zone, a second zone, a third zone and a fourth zone and a second extruder comprising successive zones comprising a first zone and a second zone, the process comprising the steps of: 1a) introducing a first propylene-based polymer in the first zone of the first extruder, 1b) melt mixing the first propylene-based polymer in the second zone of the first extruder, 1c) adding an additive masterbatch to the mixture of step 1b) in the third zone of the first extruder and 1d) melt-mixing the mixture of step 1c) in the fourth zone of the first extruder to obtain the polypropylene composition, wherein the maximum temperature in the fourth zone of the first extruder is lower than the maximum temperature in the second zone of the first extruder and is lower than 240° C., wherein the additive masterbatch is produced in the second extruder by a process comprising the steps of: 2a) introducing a second propylene-based polymer and organic additives in the first zone of the second extruder and 2b) melt mixing the mixture of step 2a) in the second zone of the second extruder to obtain the additive masterbatch, wherein the maximum temperature in the second zone of the second extruder is lower than the maximum temperature in the second zone of the first extruder and is lower than 240° C.

Provided are a pellet including a thermoplastic resin and cellulose nanofibers that enables the production of a molded body which has a good appearance in which yellowing is suppressed, and a method for producing a molded body using the same. According to one aspect, there is provided a pellet including a thermoplastic resin and cellulose nanofibers, wherein the number of pore-containing pellets per 100 pellets is 10 or less. Further, according to another aspect, there is provided a method for producing a molded body, which includes a step of preparing the pellets, and a step of injection molding the pellets in a mold to obtain a molded body.

Provided are a pellet including a thermoplastic resin and cellulose nanofibers that enables the production of a molded body which has a good appearance in which yellowing is suppressed, and a method for producing a molded body using the same. According to one aspect, there is provided a pellet including a thermoplastic resin and cellulose nanofibers, wherein the number of pore-containing pellets per 100 pellets is 10 or less. Further, according to another aspect, there is provided a method for producing a molded body, which includes a step of preparing the pellets, and a step of injection molding the pellets in a mold to obtain a molded body.

A cellulose fiber composite recycled resin having excellent strength, and a method for producing the same. The cellulose fiber composite recycled resin contains a recycled resin and a mixture of fibrous cellulose, at least one of resin powders and resin pellets, and at least one substance selected from the group consisting of phthalic acid, phthalates, derivatives of phthalic acid, and derivatives of phthalates. For producing this composite resin, at least one of resin powders and resin pellets are added to a slurry of cellulose fibers to obtain a first mixture, a recycled resin is mixed into the first mixture to obtain a second mixture, and the second mixture is kneaded, wherein part or all of the cellulose fibers are fine fibers.

The present invention relates to the technical field of polymer material preparation, and discloses a polymer material for toys and a preparation equipment thereof, whereby the preparation equipment of the polymer material for toys includes an open mixer main body and a twisting mechanism mounted on the open mixer main body, and the twisting mechanism includes: a fixed ring, wherein the fixed ring is fixedly installed on the top of the open mixer main body, and a mounting flange is rotatably sleeved inside the fixed ring; a rotating gear ring, wherein the rotating gear ring is fixed with the mounting flange, and a first rotating shaft and a second rotating shaft are rotatably installed inside the rotating gear ring. Through the rotation of the rotating gear ring, the preparation equipment of the polymer material for toys enables the molten mixture located between a first twisting roller and a second twisting roller to be twisted and kneaded together, facilitating the uniform mixing of the mixture. This process is easy to operate and reduces labor costs.

The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.

The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.

The invention concerns a process for making compounds using wastes of natural origin and fibres of plant or animal origin, wherein wastes of natural origin, fibres of plant origin, as well as wastes of animal origin, composing the so-called “charge”, are mixed with agglomerating plastic materials, the so-called “carriers”, and with agglomerating additives in order to form a mixture, the so-called “blend”, which is transformed into a compound, the “compound”, used for making semi-finished products. Said process occurs five sequenced steps that goes from the preparation of the “charge” and the “blend” to the selection of the “carriers” and agglomerating additives till the process of the “blend” to obtain the “compound” and finally to the process of the “compound” to obtain a semi-finished product. According to the invention the initial “charge” is submitted to a sanitization treatment, based on the principle of advanced oxidation, obtained by applying the technological process referred to as “Non-thermal plasma” or

“NTP”, where the so-called “non-thermal discharges with dielectric-barrier method” or “DBDs” are used, in order to strongly reduce bacterial charges, until removal thereof, decompose the volatile organic substances (VOCs) and remove smells.