Patent ID: 6838156

Claim:
Method for non-adhesive bonding of two contiguous plastic work pieces ( 2 , 3 ; 5 , 6 ) characterized in that: the intended contact surface (K) of at least one of the two work pieces ( 2 , 5 or 3 , 6 ) by which it borders on the other work piece ( 3 , 6 or 2 , 5 ) is at least in some sections subjected to a high-energy radiation which causes the lowering of the glass transition temperature in a marginal layer (R, R′), the two work pieces ( 2 , 3 ; 5 , 6 ) are brought into a mutual position according to the intended use, and subsequently, to produce the bond of the two work pieces ( 2 , 3 ; 5 , 6 ) at least the modified marginal layer (R, R′) in the area of its surface is heated to a temperature which is above the glass transition temperature of the marginal layer (R, R′) modified by radiation, but below that of the unmodified areas of the respective work piece ( 2 , 3 ; 5 , 6 ).