Abstract: The invention is directed to a construction material, to a method for preparing a construction material, and to the use of a construction material. The construction material of the invention comprises a perforated sheet of metal and on at least one side of the perforated sheet of metal a thermoplastic layer comprising poly(vinyl butyrate), wherein said thermoplastic layer has i) a modulus of elasticity as measured according to ISO 527 of 0.6-2.0 MPa, preferably in the range of 0.8-1.8 MPa, ii) a shore A hardness as measured according to ISO 7619-1 in the range of 25-65, preferably in the range of 35-50, and iii) an elongation at break as measured according to ISO 527 of 250-400%, preferably 275-375%.

Abstract: The invention is directed to a construction material, to a method for preparing a construction material, and to the use of a construction material. The construction material of the invention comprises a perforated sheet of metal and on at least one side of the perforated sheet of metal a thermoplastic layer comprising poly(vinyl butyrate), wherein said thermoplastic layer has i) a modulus of elasticity as measured according to ISO 527 of 0.6-2.0 MPa, preferably in the range of 0.8-1.8 MPa, ii) a shore A hardness as measured according to ISO 7619-1 in the range of 25-65, preferably in the range of 35-50, and iii) an elongation at break as measured according to ISO 527 of 250-400%, preferably 275-375%.

Abstract: The invention relates to a self-supporting polymer film, to a process for preparing said self-supporting polymer film, to a hot-melt adhesive, to uses of a self-supporting polymer film, to a method for preparing an assembly of at least two objects, and to a tufted carpet. The self-supporting polymer film of the invention comprises a continuous layer of a thermoplastic composition comprising a thermoplastic polymer, wherein the composition has a melt flow index (MFI) of 100 g/10 minutes or more, and wherein the polymer film is biaxially expanded.