A method and device for manufacturing a sandwich structure comprising at least one foam layer of a first thermoplastic comprising a chemical blowing agent and two cover layers. The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on an advancing starting structure including heating under pressure in order to cause decomposition of the blowing agent, intermediate cooling, foaming at a constant volume and further cooling.

A vinyl chloride resin composition excellent in high-temperature powder fluidity is provided. The vinyl chloride resin composition includes a vinyl chloride resin and a plasticizer, and satisfies at least one of: (1) a tetrahydrofuran-insoluble content ratio being 10 mass % or more; and (2) a ratio between the tetrahydrofuran-insoluble content ratio and a content ratio of the plasticizer (tetrahydrofuran-insoluble content ratio/plasticizer content ratio) being 0.20 or more.

A structural member (10) comprising: (i) a pultruded secondary member (14) including a first surface and an opposing second surface: and (ii) a molded carrier (12) overmolded onto at least one of the first and second surface of the pultruded secondary member, the molded carrier including a plurality of ribs (16); wherein the secondary member and the carrier are dissimilar materials.

A structural member (10) comprising: (i) a pultruded secondary member (14) including a first surface and an opposing second surface: and (ii) a molded carrier (12) overmolded onto at least one of the first and second surface of the pultruded secondary member, the molded carrier including a plurality of ribs (16); wherein the secondary member and the carrier are dissimilar materials.

The present disclosure relates to a process and article produced by injection molding. More particularly, a process and article produced by injection molding, that provides a part with one or more locations of a reduced density where such part competes in mechanical property characteristics with parts, such as vehicular components, otherwise produced from metallic materials.

A fabric-like material for reinforcement in an urethane foam molding is obtained by impregnating a part of a surface of a nonwoven fabric of organic fibers with a hot melt magnetic material and immobilizing the hot melt magnetic material. The hot melt magnetic material satisfies compositions described below and has a softening point of 70 to 100 C. Ethylene-vinyl acetate copolymer (A): 10 to 95% by mass. Wax (B): 0 to 30% by mass. Magnetic powder (C): 5 to 70% by mass. (The total of (A), (B) and (C) is 100% by mass.).

A method of preparation of a cardo polyetherketone structural foam material, including the following steps: 1) performing a mould pressing on a cardo polyetherketone resin by a high-temperature vulcanizing machine to prepare a foaming billet; 2) placing the foaming billet in a foaming cavity of a mould-pressing machine, performing a penetration and a swelling by introducing a supercritical fluid to achieve diffusion equilibrium, forming a polymer-supercritical fluid homogeneous solution, and 3) making the polymer-supercritical fluid homogeneous solution supersaturated through a sudden release of the inner pressure of the system, thereby inducing nucleation and foaming, and finally forming a structural foam having a closed pore structure with a uniform pore size and an adjustable pore density. The production process of the present invention is clean, environmentally friendly, and has relatively high efficiency. The obtained structural foam has good mechanical properties.

The present invention relates to a method for producing an expanded beads molded article including performing in-mold molding by a molding method of filling expanded thermoplastic elastomer beads in a mold in a compressed state, in which expanded thermoplastic elastomer beads having a particular bulk density and a particular closed cell ratio are used, and a particular relationship between the internal pressure of the expanded beads and the compression filling ratio is satisfied. According to the method, an expanded thermoplastic elastomer beads molded article excellent in appearance, excellent in dimensional stability, and excellent in fusion bondability, compression characteristics, and rebound resilience of the expanded beads can be produced.

Provided is a foamed heat-insulating material which encapsulates therein a low-heat conductivity gas and which yields high heat insulating performance. High-melting point beads that have been foamed up to a prescribed expansion ratio with a gas of low thermal conductivity by using a resin that does not soften at the beads-foaming temperature and that has a low gas transmission rate are mixed with low-temperature foam beads to be foamed within a forming die, and the resultant mixture is filled in a beads forming die cavity and foamed by heating.

Provided is a resin for foam molding excellent in foam molding property and low-temperature impact resistance. According to the present invention, provided is a resin for foam molding including a component A, a component B and a component C. The component A is a long-chain branched homopolypropylene, the component B is a long-chain branched block polypropylene, the component C is a polyethylene-based elastomer, and when a total of the components A to C is 100 parts by mass, content of the component A is 20 to 70 parts by mass, content of the component B is 20 to 70 parts by mass, and content of the component C is 1 to 20 parts by mass.