METHOD FOR OBTAINING A HEAT-INSULATING AND SOUND-ABSORBING COMPOSITE PRODUCT, CO-MOULDING EQUIPMENT AND PRODUCT SO OBTAINED
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United States of America Patent
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Dec 10, 2014
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Dec 10, 2014
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Abstract
A method for obtaining a heat-insulating and sound-absorbing composite product consisting in a fibrous material (MF) and in a polymeric material (MP) comprises the steps of positioning the fibrous material (MF) in a mould (1) equipped with a cavity that is only partially filled in a central zone thereof, overlapping polymeric material (MP) to the fibrous material (MF), approaching a counter-mould (3) provide with a counter-cavity (4) to the mould (1), expanding of the polymeric material (MP) by chemical reaction, forming the composite positioned between mold (1) and counter-mould (3), removing the counter-mould (3) from the mould (1) and extracting a product. After the step of forming the polymeric material (MP) covers the fibrous material (MF) in the central zone of the cavity and fills a peripheral groove (7) of the cavity of the mold (1). Further, a moulding equipment and the product so obtained are described.
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