An extruder includes a screw for extruder provided with a screw element for kneading a raw material, and a barrel including a cylinder portion in which the screw is inserted so as to be rotatable. A plurality of screw elements identical with the screw element are provided in a longitudinal direction of the screw under a certain rule. The barrel is integrated by combining a plurality of barrel blocks blocked. Each of the plurality of barrel blocks is configured in accordance with a length of the screw element provided in the longitudinal direction of the screw.

An extruder includes a screw for extruder provided with a screw element for kneading a raw material, and a barrel including a cylinder portion in which the screw is inserted so as to be rotatable. A plurality of screw elements identical with the screw element are provided in a longitudinal direction of the screw under a certain rule. The barrel is integrated by combining a plurality of barrel blocks blocked. Each of the plurality of barrel blocks is configured in accordance with a length of the screw element provided in the longitudinal direction of the screw.

Mixing performance of resin material in the rotational direction of the screw is enhanced. Kneading disc 7 is fitted onto rotatable shaft 3 and is arranged in cylinder 2. Outer circumferential surface 8 of kneading disc 7 of the present invention that faces cylinder 2 has band portion 9 that extends between both ends 7a, 7b of kneading disc 7 in axial direction X of shaft 3 and that forms a minimum gap with cylinder 2. Band portion 9 includes at least one bent part 10.

Mixing performance of resin material in the rotational direction of the screw is enhanced. Kneading disc 7 is fitted onto rotatable shaft 3 and is arranged in cylinder 2. Outer circumferential surface 8 of kneading disc 7 of the present invention that faces cylinder 2 has band portion 9 that extends between both ends 7a, 7b of kneading disc 7 in axial direction X of shaft 3 and that forms a minimum gap with cylinder 2. Band portion 9 includes at least one bent part 10.

Provided is a resin composition comprising an ethylene-vinyl alcohol copolymer (A), a hydrate-forming metal salt (B), and a polyamide-based resin (C) that inhibits elution of a resin composition layer during hot water sterilization treatment of a multilayered structure including the resin composition layer, while suppressing odor during melt molding of the resin composition. An aromatic polyamide (C1) and an aliphatic polyamide (C2) are used for the polyamide-based resin (C) at a proportion of (C1)/(C2)=55/45-99/1.

A method for producing a foamed extrudate comprises a device containing a main melting device and an auxiliary melting device. A first melt is generated in the main melting device, a second melt is generated in the auxiliary melting device from a meltable starting material. At least one reactive additive is added to the meltable starting material, wherein the at least one reactive additive being selected from the group consisting of a chemical blowing agent and an active nucleating agent is mixed in the auxiliary melting device with the second melt, so that an additive-containing second melt is obtained in the auxiliary melting device which is added to the first melt.

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

There is provided with a thermal decomposition treatment apparatus capable of thermally decomposing a resin under an appropriate thermal decomposition condition. The thermal decomposition treatment apparatus comprises: a thermal decomposition treatment unit configured to thermally decompose a recycled material containing a resin; a detection unit configured to detect an impurity in the recycled material to be introduced into the thermal decomposition treatment unit; and a determination unit configured to determine a condition related to an introduction amount of a virgin material of the resin to be introduced, together with the recycled material, into the thermal decomposition treatment unit, based on a detection result of the detection unit.

There is provided with a thermal decomposition treatment apparatus capable of thermally decomposing a resin under an appropriate thermal decomposition condition. The thermal decomposition treatment apparatus comprises: a thermal decomposition treatment unit configured to thermally decompose a recycled material containing a resin; a detection unit configured to detect an impurity in the recycled material to be introduced into the thermal decomposition treatment unit; and a determination unit configured to determine a condition related to an introduction amount of a virgin material of the resin to be introduced, together with the recycled material, into the thermal decomposition treatment unit, based on a detection result of the detection unit.