Tubular molded foam with plate portion
AssigneeKyoraku Co., Ltd.
InventorsNaoto Tani, Masayuki Mishima, Isao Kimura
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Abstract
Provided is a tubular molded foam with a plate portion capable of reliably preventing the occurrence of an unwanted lump on the inside of a tube body even when the molding is manufactured using a molten resin having a high expansion ratio. The tubular molded foam includes a tube body and a plate portion joined with an outside of the tube body. The plate portion has a recess in the vicinity of a joint surface with the tube body.
Claims18
A tubular foam molding with a plate-shaped portion, the tubular foam molding comprising:
- a tube main body, the plate-shaped portion connected to an outside of the tube main body,
- wherein the tubular foam molding is molded by sandwiching molten foam resin between mold halves,
- wherein, in the molding, a concave portion for preventing movement of a foam cell inside the plate-shaped portion toward the tube main body is formed near a connection of the plate-shaped portion to the tube main body,
- wherein the movement of the foam cell inside the plate-shaped portion toward the tube main body is dammed up in a point where the concave portion is formed,
- wherein a thickness of the concave portion is smaller than a thickness of the plate-shaped portion, the plate-shaped portion being uniform in thickness, and
- wherein the plate-shaped portion includes at least one hole for the attachment of a tubular body.
A method of molding a tubular foam molding including a tube main body and a plate-shaped portion connected to outside of the tube main body, the method comprising:
- molding the tubular foam molding by sandwiching molten foam resin between mold halves;
- and
- in the molding, forming a concave portion for preventing movement of a foam cell inside the plate-shaped portion toward the tube main body, near a connection surface of the plate-shaped portion to the tube main body,
- wherein the movement of the foam cell inside the plate-shaped portion toward the tube main body is dammed up in a point where the concave portion is formed,
- wherein a thickness of the concave portion is smaller than a thickness of the plate-shaped portion, the plate-shaped portion being uniform in thickness, and
- wherein the plate-shaped portion includes at least one hole for the attachment of a tubular body.
Dependencies are inferred from the claim text.