Appeal No. 2003-0459
Application 08/727,328
APPEALED SUBJECT MATTER
Claim 23 is representative of the subject matter on appeal and reads as follows:
23. A method for the production of rolls of relatively narrow double sided adhesive tape
for securing sections of carpet, which tape is easily transversely tearable by hand, comprising the
steps of:
1) unwinding a wide band of biaxially stretched double sided adhesive tape having a
polypropylene backing having an upper and a lower surface and two longitudinal side edges, an
adhesive layer on said upper and lower surfaces and a release paper on a least one of the
adhesive-coated surfaces off an unwind shaft;
2) passing the unwinding band between said unwind shaft and a wind-up shaft over the
surface of a cutting back-up roll;
3) cutting through the wide band of double faced adhesive tape to form narrow tapes by
means of at least one cutter and cutting shaft;
the cutter having a cutting edge of a profile such that it imparts to the cut tape in at least one side
edge a series of continuous tooth notches of about 0.3 to 6 mm in height; and
4) collecting the narrow tapes on the wind-up shaft, whereby the resulting narrow tapes
can be torn by hand transversely.
PRIOR ART
As evidence of obviousness, the examiner relies on the following prior art references:
Aycock 2,400,527 May 21, 1946
Heinzelman et al. (Heinzelman) 4,447,482 May 8, 1984
Darbo 4,851,064 Jul. 25, 1989
Johnson & Johnson (Johnson) 1,188,344 Apr. 15, 1970
(Published British Patent Specification)
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