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Rigid polyurethane foam manufacturing method: spraying and pouring method:
- Nov 23, 2016 -

1, casting: one is mixed evenly onto the cavity with foam, foam foam and fiberglass products after shell formation as a whole. Products made using this method fan blade has sandwich structure. Refrigerator completely shell, insulating fibreglass tanks; the other is poured foam into a mold, molding foam after removal from the mould, the outer surface of the foam with a layer of smooth, hard is not foaming surface.

Casting is divided into hand-casting and machinery casting in two ways. But most mechanical casting method is used in the production, mechanical foam is made according to the ratio of measurement pump continuous putting material on the foaming machine's mixing chamber, mixing evenly, quickly into the cavity or mold and cured.