ELONGATED FILM TAPE, METHOD OF USING SAME TO PREPARE A FILTER, FILTER AND METHOD OF USING FILTER
An elongated film optionally having double-sided adhesive tapes adhered to both ends can be used to wrap a paper core and thereafter covered with a curable resin that is then cured to form a filter, especially a water filter, having a hardened canister about the paper core. The resulting filter is characterized by outstanding lack of visual imperfection.
1 . A film tape comprising:
a) an elongated film having first and second ends;
b) optionally a first double-sided adhesive tape adhered to said first end; and
c) optionally a second double-sided adhesive tape adhered to said second end.
2 . The film tape according to claim 1 , which lacks said optional first and second double-sided adhesive tapes.
3 . The film tape according to claim 1 , wherein the elongated film is a film selected from the group consisting of oriented polyolefins or polyesters.
4 . The film tape according to claim 1 , wherein the elongated film is an oriented polyolefin film.
5 . The film tape according to claim 4 , wherein the elongated film is an oriented polyethylene film.
6 . The film tape according to claim 4 , wherein the elongated film is an oriented polypropylene film.
7 . The film tape according to claim 1 , which consists of the elongated film, the first double-sided adhesive tape and the second double-sided adhesive tape.
8 . The film tape according to claim 7 , which is wound into a roll.
9 . The film tape according to claim 1 , wherein the elongated film is corona-treated.
10 . The film tape according to claim 1 , which comprises at least one double-sided adhesive tape, wherein the double-sided adhesive tape comprises a backing.
11 . The film tape according to claim 10 , which further comprises a release material applied to a free adhesive side of said first double-sided adhesive tape and/or said second double-sided adhesive tape.
12 . The film tape according to claim 1 , which comprises at least one double-sided adhesive tape, wherein the double-sided adhesive tape does not comprise a backing.
13 . The film tape adhesive according to claim 12 , which further comprises a release material applied to a free adhesive side of said first double-sided adhesive tape and/or said second double-sided adhesive tape.
14 . A method of preparing a filter comprising a hardened canister surrounding a paper core, said method comprising:
a) providing a film tape according to claim 1 ;
b) adhering the film tape to the paper core;
c) wrapping the film tape around the paper core;
d) covering the surface of the wrapped paper core with a curable resin; and
e) curing the resin to form the hardened canister surrounding the paper core.
15 . The method according to claim 14 , wherein the curable resin is a curable epoxy resin.
16 . The method according to claim 15 , wherein the curable epoxy resin is cured by drying.
17 . A filter comprising:
a) a paper core;
b) a film tape according to claim 1 wrapped around the paper core; and
c) a cured resin forming a hardened canister surrounding the wrapped paper core.
18 . The filter according to claim 17 , wherein the cured resin is a cured epoxy resin.
19 . A method of filtering a liquid comprising filtering the liquid through a filter according to claim 17 .
20 . The method according to claim 19 , wherein the liquid is water.