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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No: 776/MAS/1998A
(22) Date of filing of Application: 13/04/1998 (43) Publication Date: 09/06/2006
(54) Title of the invention:
A METHOD FOR MAKING A PINHOLE
RESISTANT SUBSTRATE.
(51) International classification: C 08 L
23/02 , C 08 L 23:04 , C 08 L 23:08
(31) Priority Document No.60/043,780
(32) Priority Date: 11/04/1997
(33) Name of priority country: USA
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Application No.:
Filed on:
(71) Name of Applicant
DOW GLOBAL TECHNOLOGIES INC.
Address of Applicant:
Washington Street, 1790 Building, Midland,
MI 48674 ,
U.S.A.
(72) Name of the Inventor(s):
JAMES L COOPER.
MICHAEL W POTTS.
(57) Abstract
The present invention relates to a method for making a pinhole- resistant substrate comprising: (a) providing
an extrusion composition comprising at least one olefin polymer wherein the composition is characterized as having a
corrected or actual Goettfert melt strength value at 190 C., as measured using a Rheotens unit, in the range of from
0.01 centiNewtons to 7.25 centiNewtons, (b) applying the composition to a substrate, (c) collecting the substrate with
the extruded coating or laminated film for subsequent use or transferring the substrate with the extruded coating or
laminated film for further processing, the coating or laminate being characterized as having from 0 to 1 pinholes per
cm2 of thermally exposed area after exposure to hot air at 537 C. for 0.75 second.
The Patent Office Journal 09/06/2006 10788