Patent ID: 6515048
Filing Date: 2003-02-04
Classification: C08L,C09J

Abstract:
An adhesive powder for bonding flat, closed, or porous substrates, comprising:i) a thermoplastic polymer component in a proportion of 25 to 95% by weight; and ii) at least one epoxy resin component that is solid at room temperature in a proportion of 5 to 75% by weight; wherein the adhesive powder is capable of being applied in a first step to a first substrate so as to be physically bonded to the first substrate and thereby produce an intermediate product that is non-adhesive at room temperature and stable in storage, and wherein the first substrate is capable of being bonded to a second substrate in a second step by applying an increased temperature and pressure, the two substrates being bonded in the second step by the powder components being chemically cross-linked or post-cross-linked among one another, and being subsequently cooled.