Heat-insulating wall, and heat-insulating housing and method for producing the same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKazutaka Uekado, Tsuyoki Hirai
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Abstract
A heat-insulating housing (21) includes: a wall body; and an open-cell resin body (4) of thermosetting resin with which a heat-insulating space formed by the wall body is filled by integral foaming, the open-cell resin body including: a plurality of cells (47); a cell film portion (42); a cell skeleton portion (43); a first through-hole (44) formed so as to extend through the cell film portion; and a second through-hole (45) formed so as to extend through the cell skeleton portion, wherein the plurality of cells communicate with one another through the first through-hole and the second through-hole.
Claims1
A method for producing a heat-insulating housing, the method comprising:
- forming a heat-insulating space using a wall body;
- and
- filling the heat-insulating space with a mixture of a plurality of polyols having different compositions, a polyisocyanate, a foaming agent and powder,
- wherein a thermosetting urethane resin is formed by a polymerization reaction of the polyol mixture and the polyisocyanate,
- a plurality of cells are formed in the thermosetting urethane resin,
- a first through-hole is formed so as to extend through the thermosetting resin located between neighboring cells;
- and
- a second through-hole is formed at an interface between the thermosetting resin and the powder,
- the second through-hole is formed due to the powder being incompatible with the thermosetting urethane resin.
Dependencies are inferred from the claim text.