Appeal No. 2001-1884
Application No. 08/718,692
39. A method of producing a laminate material suitable
for use in packaging material, comprising:
providing a pre-manufactured first web comprising a
layer of polyethylene extruded at a temperature Te above a
breakpoint temperature which is higher than a normal melting
temperature Tm of the extruded polyethylene, said layer of
polyethylene having an outer surface;
providing a second web comprising a layer of PET or
OPET, said PET or OPET having an outer surface;
subjecting the first web and the second web to a non-
chemical surface activation treatment in a continuous
process; and
contacting the outer surface of the polyethylene layer
of the first web with the outer surface of the PET or OPET
layer of the second web and permanently uniting the first
and second webs which have been subjected to the surface
activation treatment with one another by simultaneous
application of heat and pressure.
58. A method of producing a laminate material suitable
for use in packaging material comprising:
providing a pre-manufactured first web comprising a
layer of polyethylene extruded at a temperature Te above a
breakpoint temperature which is considerably higher than a
normal melting temperature Tm of the extruded polyethylene,
said layer of polyethylene having an outer surface;
advancing the first web and a second web comprising a
layer of PET or OPET, said PET or OPET having an outer
surface, while subjecting the first and second webs to a
non-chemical surface activation treatment; and
contacting the outer surface of the polyethylene layer
of the first web with the outer surface of the PET or OPET
layer of the second web and permanently uniting the first
and second webs with one another under simultaneous
application of heat and pressure.
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007