Abstract: A method for producing a hollow body produced by shaping at least two thermoplastic resin sheets, comprising: a supplying step including supplying the at least two thermoplastic resin sheets to between a pair of mold members with the thermoplastic resin sheets superimposed one on another; a heating step including heating the thermoplastic resin sheets; a mold closing step including moving the mold members relatively toward each other to press the heated thermoplastic resin sheets together between the flanges of the mold members, thereby joining the sheets at a part of each of the sheets, the part being pressed with the flanges of the mold members; and a shaping step including sucking air out through the molding surfaces and simultaneously blowing air into the space(s) formed between the thermoplastic resin sheets, thereby making thermoplastic resin sheets facing the molding surfaces conform with the molding surfaces to shape the sheets into predetermined shapes, wherein the thermoplastic resin sheets are foam

Abstract: The invention relates to a method for producing a molded article including a thermoplastic resin foamed substrate and a thermoplastic resin functional member which is joined to and projects from the foamed substrate. A molten thermoplastic resin is injected into a mold cavity for forming the functional member while the cavity is sealed with a thermoplastic resin foamed substrate. In the method, compressed gas is supplied into the cavity before the injection of the molten thermoplastic resin is completed.

Abstract: Disclosed is a method for producing a thermoplastic resin article comprising a foamed thermoplastic resin sheet shaped in a predetermined shape and a functional member of thermoplastic resin which stands locally on and is fused with the foamed sheet. In the method, a mold having a molding surface with a recess for forming a functional member therein is used. A foamed thermoplastic resin sheet is stuck on the molding surface by suction so that the recess is sealed with the foamed sheet. Then, molten thermoplastic resin is fed into the recess. Thus, the molten thermoplastic resin is fused with the foamed sheet to form a thermoplastic resin article.

Abstract: Disclosed are methods for producing a thermoplastic resin article composed of a foamed thermoplastic resin sheet shaped in a predetermined shape and a functional member of thermoplastic resin which stands locally on and is fused with the foamed sheet. In the methods, a mold having a molding surface with a recess for forming a functional member therein is used in combination with a counter mold. A foamed thermoplastic resin sheet is stuck on the molding surface by suction or supply of compressed air so that the recess is sealed with the foamed sheet. Then, molten thermoplastic resin is fed into the recess. Thus, the molten thermoplastic resin is fused with the foamed sheet to form a thermoplastic resin article.

Abstract: Disclosed is a thermoplastic resin foamed sheet wherein pillar-shaped resin portions observed in a cross section in the thickness direction of the sheet satisfy requirement (1): the number density of pillar-shaped resin portions intersecting the thickness centerline of the foamed sheet is from 1 to 20 pillars/mm-centerline and requirement(2): the average thickness of pillar-shaped resin portions intersecting the thickness centerline of the foamed sheet is from 10 to 500 ?m.

Abstract: Disclosed is a method for producing a thermoplastic resin foamed article using an apparatus including a pair of molds each having a molding surface through which vacuum sucking can be conducted, the method comprising a step of, while holding a foamed sheet between the molds, vacuum sucking through the molding surfaces of the molds to shape the thermoplastic resin foamed sheet, wherein the foamed sheet to be subjected to vacuum forming having a first foamed layer having an expansion ratio Xa of from 2 to 20, a thickness Ta of from 2 to 20 mm and a basis weight Ra of from 600 to 3000 g/m2 and a second foamed layer having an expansion ratio Xb of from 4 to 40, a thickness Tb of from 2 to 12 mm and a basis weight Rb of from 100 to 600 g/m2 wherein Ra/Rb is from 2 to 30.

Abstract: Disclosed are methods for producing thermoplastic resin foamed articles having a high expansion ratio and a large thickness by vacuum forming using a pair of molds through which vacuum sucking can be conducted and holding means for holding a thermoplastic resin foamed sheet at a predetermined position between the molds or a molding apparatus comprising a first mold having a molding surface through which vacuum sucking can be conducted, a second mold having a molding surface provided with sheet fixing means on at least the peripheral portion of the molding surface, and holding means for holding a thermoplastic resin foamed sheet at a predetermined position between the molds. In the methods, a heated and softened foamed sheet is supplied between the molds and vacuum sucking is started when the molds have been closed appropriately. Thus, the foamed sheet is vacuum formed to afford a molded article.

Abstract: Disclosed is a resin composition for forming sheets for ink printing comprising from 30 to 90% by weight of an ink-absorbent resin (A) and from 70 to 10% by weight of an ink-unabsorbent resin (B) When ink is printed on a sheet for prepared from the resin composition, a high-quality printed material can be obtained while effectively preventing the ink from blotting and the sheet from cockling.

Abstract: A pressure-sensitive adhesive tape having a layer of thermoplastic resin wherein the substrate is provided with a plurality of perforations through its thickness wherein each perforation is surrounded by a burr which is substantially flattened is provided. One useful example of the film is a pressure-sensitive adhesive tape having a layer of pressure-sensitive adhesive.There is also provided a process for producing a film comprising the steps of:Step (A): press protrusions provided on a surface of a roller against a substrate comprising a layer of thermoplastic resin to open a plurality of perforations in the substrate; andStep (B): subjecting the substrate, obtained by Step (A), which has a plurality of perforations to a heat treatment while pressing. The process may have a further step of applying a pressure-sensitive adhesive to at least one surface of the substrate obtained in Step (B).