Foamed resin product and foamed resin molding machine to manufacture the same
AssigneeSamsung Electronics Co., Ltd.
InventorsBong Sup LIM, Nam Chun SONG
Life of this patent
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Abstract
Disclosed is a foamed resin molding machine including a first mold having a first molding surface, a second mold having a second molding surface, and a third mold. A cavity is formed between the first molding surface and the second molding surface, and the third mold is movably mounted with respect to the first molding surface, such that the third mold can protrude into the cavity. The cavity is fillable with resin particles.
Claims20
A foamed resin molding machine comprising:
- a first mold including a first molding surface;
- a second mold including a second molding surface, wherein a cavity is formed between the first molding surface and the second molding surface;
- and
- a third mold that is movably mounted to the first molding surface, such that the third mold is moveable to protrude into the cavity.
A foamed resin product formed by fusion of resin particles, integrally comprising a buffer part and a reinforcing part, wherein a density of the buffer part is lower than a density of the reinforcing part.
A method of manufacturing a foamed resin product, the method comprising:
- forming a cavity between a first mold and a second mold, the cavity bordered by a first molding surface of the first mold, a third molding surface, of the first mold, and a second molding surface of the second mold;
- filling the cavity with resin particles;
- fusing the resin particles by simultaneously:
- injecting steam into the cavity, and
- moving the third molding surface with respect to the first molding surface, such that the third molding surface projects into the cavity compressing resin particles, such that resin particles disposed in a first region, adjacent to the third molding surface, are compressed to a greater extent than resin particles disposed in a second region, outside the first region.
A method of manufacturing a foamed resin product, the method comprising:
- forming a cavity having at least a first portion and a second portion, different from the first portion;
- filling the cavity with resin particles;
- and
- simultaneously injecting steam into the cavity, and increasing a density of resin particles in the first portion of the cavity with respect to a density of resin particles in the second portion of the cavity by compressing the first portion of the cavity.
A foamed resin molding machine comprising:
- a cavity into which resin particles and steam are injectable;
- wherein the cavity is bounded by at least one fixed molding surface and at least one moveable molding surface;
- and
- wherein the at least one moveable molding surface is moveable between a first position, in which a volume of the cavity is a first volume, and a second position, in which a volume of the cavity is a second volume, less than the first volume.
Dependencies are inferred from the claim text.