Apparatus for forming a composite tape

摘要: Apparatus for forming a composite tape having foraminous fiberglass core includes the step of treating continuous strip material with adhesion promoting and stiffening material. The treated is preheated to temperature approximately equal extruding two ribbons flexible vinyl thermoplastic which are simultaneously formed in subsequent coated under pressure on each side heated through suitably dimensioned die opening. Application forces at least portions extruded into interstices cause opposing fuse other by penetrating filling form unitary mass provide textured surface or "intaglio" effect has an appearance dimensionally related finish