Abstract: A method for manufacturing a plastic laminated article comprising a surface layer of a sheet-like surface member and a synthetic resin backing material layer laminated on the surface layer, without causing a fracture or a reduction in wall thickness of the sheet-like surface member. When the male mold is pressed against the contact area of the sheet-like surface member, the temperature of the contact area of the sheet-like surface member gradually falls due to a thermal gradient between the male mold and the contact area of the sheet-like surface member. Simultaneously, the contact area of the sheet-like surface member is not heated directly. In addition, the direction of jet flow of a hot fluid is changed, by fluid guide surfaces, from the center of the sheet-like surface member to the outer periphery, of the sheet-like surface member.

Abstract: An injection molded article with which a sheet material is integrated is manufactured without causing damage to the sheet material. A molten resin injected into a mold cavity, passes smoothly a peripheral edge of the mold cavity, and flows into a groove portion without accumulating in the vicinity of the peripheral edge. When cooling the molten resin, the temperature of the molten resin in the groove decreases more quickly than the temperature of the molten resin in the mold cavity, because the volume of the groove portion is small. The viscosity of the molten resin is increased rapidly, preventing further molten resin from flowing into the groove portion. The sheet material in the vicinity of the peripheral edge is covered and protected against exposure to heat and/or pressure of the molten resin.

Abstract: An injection molded article with which a sheet-like material, such as a decorative sheet, is integrated is manufactured without causing damage to the sheet-like material. A molten resin injected into a mold cavity, passes smoothly a peripheral edge of the mold cavity, and flows into a groove portion without accumulating in the vicinity of the peripheral edge. When cooling the molten resin, the temperature of the molten resin in the groove decreases more quickly than the temperature of the molten resin in the mold cavity, because the volume of the groove portion is smaller. As a result, the viscosity of the molten resin in the groove portion and in the vicinity of the peripheral edge of the mold cavity is increased rapidly, preventing a further volume of the molten resin from flowing into the groove portion. The sheet-like material in the vicinity of the peripheral edge is covered by the resinous material of diminished fluidity and protected against exposure to heat and/or pressure of the molten resin.

Abstract: A method for manufacturing a plastic laminated article comprising a surface layer of a sheet-like surface member and a synthetic resin backing material layer laminated on the surface layer, without causing a fracture or a reduction in wall thickness of the sheet-like surface member. When the male mold is pressed against the contact area of the sheet-like surface member, the temperature of the contact area of the sheet-like surface member gradually falls due to a thermal gradient between the male mold and the contact area of the sheet-like surface member. Simultaneously, the contact area of the sheet-like surface member is not heated directly. In addition, the direction of jet flow of a hot fluid is changed, by fluid guide surfaces, from the center of the sheet-like surface member to the outer periphery, of the sheet-like surface member.

Abstract: An injection molded article with which a sheet-like material, such as a decorative sheet, is integrated is manufactured without causing damage to the sheet-like material. A molten resin injected into a mold cavity, passes smoothly a peripheral edge of the mold cavity, and flows into a groove portion without accumulating in the vicinity of the peripheral edge. When cooling the molten resin, the temperature of the molten resin in the groove decreases more quickly than the temperature of the molten resin in the mold cavity, because the volume of the groove portion is smaller. As a result, the viscosity of the molten resin in the groove portion and in the vicinity of the peripheral edge of the mold cavity is increased rapidly, preventing a further volume of the molten resin from flowing into the groove portion. The sheet-like material in the vicinity of the peripheral edge is covered by the resinous material of diminished fluidity and protected against exposure to heat and/or pressure of the molten resin.