Blocked non-melt adhesives - mixed with paraffins/waxes/ polyolefins used in automobile ind

摘要

The adhesive is mixed with pure or neutral ester wax, natural or microwax, paraffins and/or low molecular polyolefin. Before or during the bonding of a substrate covered with the adhesive the blocking additive is removed by warming when it diffuses either into the substrate if it is a foil cellulose, polyolefin or bitumen type or into another medium contacted with the adhesive. The adhesive combines the advantages of melt adhesives which do not need separating foils between stacked coated substrates with cold resistance, and good setting characteristics.