Disclosed is a surface skin which comprises a vinyl chloride resin molded sheet (X) which comprises a vinyl chloride resin and a plasticizer; and a foamed vinyl chloride resin molded sheet (Y), wherein an amount of the plasticizer contained in the vinyl chloride resin molded sheet (X) is 50 parts by mass or more per 100 parts by mass of the vinyl chloride resin, and the foamed vinyl chloride resin molded sheet (Y) is disposed on one side in a thickness direction of the vinyl chloride resin molded sheet (X).

There is disclosed a rubber sponge having a foamed part comprising a vulcanized synthetic rubber, wherein a average cell diameter in the foamed part is 10 to 350 m, and a standard deviation of the cell diameters in the foamed part is 10 to 150 m. The content of the synthetic rubber may be 20 to 80% by mass based on a mass of the rubber sponge.

Polymer compositions may include an elastomeric ethylene-vinyl acetate (EVA) composition; and one or more selected from base polymer, filler, peroxide agent, blowing agent, and blowing accelerator. Methods may include blending a polymer composition from a mixture of an elastomeric ethylene-vinyl acetate (EVA) composition, and one or more of base polymer, filler, peroxide agent, blowing agent, and blowing accelerator, wherein the elastomeric EVA composition has a melt flow index (MFI) at 190 C. and 2.16 kg as determined according to ASTM D1238 in the range of 6.1 g/10 min and 45 g/10 min.

A method for producing a millable silicone rubber sponge is a method for producing a millable silicone rubber sponge with an open cell ratio of not lower than 20%, comprising: performing a heat treatment on a silicone rubber composition at 200 C. or higher, the silicone rubber composition containing: (A) an organopolysiloxane having at least two alkenyl groups in one molecule and a polymerization degree of not lower than 3,000; (B) a reinforcing silica; (C) thermally expandable microcapsules exhibiting an expansion starting temperature of 90 to 150 C., and contracting from a maximum expansion volume by 20% or more when heated at 200 C. for 5 min; (D) a curing agent; and (E) an open cell-forming agent which is a solid high temperature decomposition-type organic foaming agent having a decomposition starting temperature of not lower than. 180 C., and starting to decompose after the component (A) is cured.

The present invention relates to a resin composition for preparing foamed rigid polymer products, comprising at least one polymer resin, a surface-treated calcium carbonate having a weight median particle diameter d.sub.50 of between 0.1 m and 1 m, measured according to the sedimentation method, in an amount of at least 10 parts per hundred parts of the at least one polymer resin (phr) and a blowing agent in an amount of less than 1 phr, to a foamed rigid polymer product prepared from the composition, to a method for preparing a foamed rigid polymer product as well as to the use of a calcium carbonate for reducing the density of a foamed rigid polymer product.

A method for preparing a core-shell copolymer includes polymerizing a core by polymerizing 70 to 90 parts by weight of a methyl (meth)acrylate monomer and 1 part to 20 parts by weight of a C.sub.2-C.sub.12 alkyl (meth)acrylate monomer, based on 100 parts by weight of the total content of the monomer; at a point when a polymerization conversion ratio is 70% to 90% in the polymerization of the core, polymerizing the core by adding and polymerizing 1 part to 10 parts by weight of the methyl (meth)acrylate monomer and 0.04 to 0.7 parts by weight of a polyfunctional acrylic cross-linking agent; and polymerizing a core-shell copolymer by adding and polymerizing 1 to 10 parts by weight of the methyl (meth)acrylate monomer and 1 to 10 parts by weight of an aromatic vinyl monomer in the presence of the core.

A physically crosslinked, closed cell continuous foam structure derived from recycled metallized polyolefin material; polypropylene, polyethylene, or combinations thereof, a crosslinking agent, and a chemical blowing agent is obtained. The foam structure is obtained by extruding a structure comprising a foam composition, irradiating the extruded structure with ionizing radiation, and continuously foaming the irradiated structure.

Provided are a foam molded body capable of improving damping properties and sound insulation properties of a panel and realizing weight reduction of a panel, a dam rubber, a complex of a dam rubber and a panel, and a method for increasing a sound transmission loss. The present invention is concerned with a foam molded body of a resin composition containing a block copolymer (I) which is a block copolymer having a polymer block (A) composed mainly of a structural unit derived from an aromatic vinyl compound and other polymer block (B), exhibits a peak top temperature of tan , as measured under a condition of a thickness of a test piece of 1 mm, a strain amount of 0.1%, a frequency of 1 Hz, a measurement temperature of 70 to 70 C., and a temperature rise rate of 3 C./min in conformity with JIS K7244-10 (2005), of 50 to 50 C., and has a peak top molecular weight determined in terms of standard polystyrene by gel permeation chromatography of 30,000 to 500,000; at least one olefin-based polymer (II) selected from the group consisting of an ethylene-propylene-diene copolymer rubber, an ethylene-vinyl acetate copolymer, and a polyethylene-based resin; a crosslinking agent (III); and a foaming agent (IV).

Present invention is related to a microwave and electromagnetic heated foaming method, mold and foaming material thereof. The microwave and electromagnetic heated foaming method comprises steps of adding a foam material into a mold, simultaneously applying a microwave and electromagnetic energy toward the mold under a normal or low pressure, and the microwave and electromagnetic energy made the foam material into molded foam body. The mold of the present invention has a microwave penetrating part and an electromagnetic heating part. The microwave penetrating part has an extruded bottom that is corresponded to a dented top of the electromagnetic heat penetrating part. By utilizing the microwave and electromagnetic energy, the present invention is about to provide an efficient way for processing the foaming material compared to the conventional infrared or electrical heated tube heating and achieve the foam method that can be executed under normal or low pressure.

This invention relates to a foaming composition, comprising at least one ethylene-vinyl acetate (EVA) copolymer; at least one foaming agent; at least one peroxide compound; at least one polyamine; at least one crosslinking enhancer; at least one primary antioxidant; and at least one secondary antioxidant; the content of the crosslinking enhancer is from 0.1 to 3% by weight based on the total weight of the composition. A foaming article cured from the foaming composition under the temperature range of 80 to 120 C. according to the present invention exhibits high initial volume expansion ratio at the baking window from 130 to 200 C. and shows excellent stability after storage.