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AssigneePaperfoam B.V.
InventorsJan Wietze Huisman, Nynke Margaretha Zandstra, Johan Hendrik Adolf Arentsen, Hugo Mark Geerts
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A method for manufacturing sustainable products with a blown, foam structure, wherein a mass comprising at least natural polymers such as starch is passed under pressure into a mould cavity (4) or through a mould die, and the mass is heated in the mould in a manner such as to stabilize the foamed structure to form the product, wherein the method comprises prefoaming of the mass prior to injection in the mould. Preferably, the prefoamed mass is kept under pressure until insertion in the mould. The invention further relates to an apparatus to be used in said method.
A method for manufacturing sustainable products with a blown, foam structure, wherein a mass comprising at least natural polymers such as starch is passed under pressure into a mould cavity (4) or through a mould die, and the mass is heated in the mould to stabilize the foamed structure to form the product, wherein the method comprises prefoaming of the mass prior to injection in the mould.
An apparatus for manufacturing sustainable products with a blown, foam structure comprising a mould (4) which contains at least one mould cavity or a mould die and supply means for feeding a mass under pressure into the or each mould cavity or through the mould die, wherein the apparatus (1) comprises heating means (22) for heating the mould and wherein the apparatus comprises prefoaming means (12) provided upstream the supply means (6) for prefoaming the mass.
Dependencies are inferred from the claim text.