A polyester film and a method for producing the same are provided. The polyester film includes a heat resistant layer. The heat resistant layer includes a high temperature resistant resin material and a polyester resin material. The high temperature resistant resin material and the polyester resin material are melted and kneaded with each other via a twin screw granulator. The twin-screw granulator has a twin-screw temperature between 250° C. and 320° C., and the twin-screw granulator has a twin-screw rotation speed between 300 rpm and 800 rpm, so that the high temperature resistant resin material is dispersed in the polyester resin material with a particle size of between 50 nm and 200 nm.

A polyester film and a method for producing the same are provided. The polyester film includes a heat resistant layer. The heat resistant layer includes a high temperature resistant resin material and a polyester resin material. The high temperature resistant resin material and the polyester resin material are melted and kneaded with each other via a twin screw granulator. The twin-screw granulator has a twin-screw temperature between 250° C. and 320° C., and the twin-screw granulator has a twin-screw rotation speed between 300 rpm and 800 rpm, so that the high temperature resistant resin material is dispersed in the polyester resin material with a particle size of between 50 nm and 200 nm.

An object is to manufacture molded bodies having a small variation among products even if the mixture amount of a metal powder is increased when molding is performed by directly introducing not only a metal powder but also a powdered resin into an injection molding machine.

In a metal powder mixed resin molded body manufacturing method for manufacturing a molded body by kneading a molding material including a metal powder, a thermoplastic resin powder, and an additive agent, molding is performed by an injection molding machine in which a molding screw is arranged. The molding screw of the injection molding machine includes a feeding portion, a compressing portion, and a metering portion that are continuously and integrally provided, the feeding portion and the compressing portion are constituted by an one-line spiral flight, the flight of the compressing portion includes a plurality of sub-flights that extend in a spiral manner in a screw axis direction and the sub-flights each have a polygonal shape with rounded corner portions, and the sub-flights are arranged such that the corner portions are shifted by a set angle in a circumferential direction about the screw axis, and the metering portion is provided with a plurality of blending/aligning portions each having gear-like protrusions and recesses in a circumferential direction about the screw axis.

The present disclosure relates to an apparatus for mixing a resin composition for manufacturing a polishing pad including: a raw material mixer preparing a mixed raw material including a prepolymer and a foaming agent; a filter connected to the raw material mixer for filtering the mixed raw material; and a pad composition mixer connected to the filter to prepare a curable mixture including the mixed raw material after being filtered and a curing agent, wherein the raw material mixer includes a plurality of rotators having different rotation speeds.

A method of producing an adhesive resin includes: a heating and kneading step of kneading a mixture containing a ring structure-containing hydrocarbon resin, an adhesive functional group-containing compound, and a peroxide while heating the mixture to obtain a heated and kneaded product; and a cooling and kneading step, performed in succession to the heating and kneading step, of kneading the heated and kneaded product while cooling the heated and kneaded product to obtain a cooled and kneaded product. The adhesive resin has a yellowness index (Yi) of 3.0 or less when 0.8 parts by mass of 2-(5-chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol is added to 100 parts by mass of the adhesive resin.

A method of producing an adhesive resin includes: a heating and kneading step of kneading a mixture containing a ring structure-containing hydrocarbon resin, an adhesive functional group-containing compound, and a peroxide while heating the mixture to obtain a heated and kneaded product; and a cooling and kneading step, performed in succession to the heating and kneading step, of kneading the heated and kneaded product while cooling the heated and kneaded product to obtain a cooled and kneaded product. The adhesive resin has a yellowness index (Yi) of 3.0 or less when 0.8 parts by mass of 2-(5-chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol is added to 100 parts by mass of the adhesive resin.

Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.

Provided is a screw that is for use in an injection molding machine and that makes it possible to benefit from the kneading effect of a multi-start screw while minimizing the received friction resistance. The screw for an injection molding machine is provided with a first stage 20 on the upstream side and a second stage 30 on the downstream side. The screw for an injection molding machine is characterized in that: the first stage 20 is provided with a compression section 22 comprising a main scraper 25 and an auxiliary scraper 26 having a smaller outer diameter than the main scraper 25; and the second stage 30 is provided with a multi-start screw section 31, said multi-start screw section being provided on the upstream side and comprising a plurality of scrapers, and a fin kneading section 32 provided downstream from the multi-start screw section.

A light diffusion plate is configured to be assembled with a blue light source module having blue Mini LEDs to form a white light backlight module. The light diffusion plate is added with organic dyes with light-emission wavelength of 490-650 nm in order to convert the blue light into white light. The light diffusion plate is made by a foaming extrusion process and contains a plurality of micro-bubbles with a size of 60-400 μm and a weight-reduction ratio of 15-25% for improving the uniformity of white light and resolving the MURA problem. The size of micro-bubbles is controlled by reducing the temperature of at the exit end of the T-die head, such that the wavelength of the white light emitted from the light diffusion plate can be narrower to achieve the effect of wider color gamut display.

In the field of mixing rubber mixtures, o a rotor (100), for use in an internal mixer having a mixing vessel in which the rotor rotates includes one or more blades (104), each blade having a tip (104a) with a profile having a predefined curvature and an anti-wear device detachably fixed to the tip (104a) of at least one blade. The anti-wear device includes a plate (110) with a profile defined by a lower surface (112) with a curvature complementary to that of the tip (104a) and an upper surface (114) with a curvature complementary to that of a wall of the vessel to define, between them, a zone of minimum distance that allows a passage of the mixture between the plate (110) and the wall of the vessel. One or more fastening systems (135) are fitted and tightened with respect to the plate (110) so as to engage the rotor (100).