Claims
- 1. A method for imparting elongation resistant gathers to portions of a generally non-elastomeric film, or web substrate which comprises contacting a surface of the substrate with a molten band of a self-adhering elastic composition comprising:
- (a) from 35 to 75% by weight of a rubbery block copolymer containing a rubbery polyisoprene midblock portion and a plurality of crystaline poly (vinylarene) endblocks wherein the poly(vinylarene) portion constitute from 17 to 75% by weight of the copolymers;
- (b) from 10 to 45% by weight of a tackifying resin selected from the group consisting of polyterpene resins having a softening point, as determined by ASTM method E28 58T, of from about 60.degree. to 140.degree. C.; phenolic-modified terpene resins; aliphatic petroleum hydrocarbon resins having a Ball and Ring softening point of from about 60.degree. to 140.degree. C.; and hydrogenated copolymers of styrene and alpha-methyl styrene having a softening point of from 78.degree. to 125.degree. C.;
- (c) from 5 to 25l % by weight of polyether ester amide; and
- (d) from 0.2 to 2% by weight of an antioxidant.
- 2. The method of claim 1 wherein the block copolymer is a polystyrene polyiosprene polystyrene copolymer.
- 3. The method of claim 2 wherein the polystyrene portion comprises at least 22% by weight of the block copolymer.
- 4. The method of claim 3 wherein the polystyrene portion comprises approximately 22% by weight of the copolymer.
- 5. The method of claim 1 wherein the polyether ester amide is a sequence copolycondensate containing chains consisting of recurrent units with the formula: ##STR2## where: A is the polyamide sequence resulting from the loss of two carboxylic functions from the dicarboxylic polyamide,
- B is the polyoxyalkylene glycol sequence resulting from the loss of the two hydroxylated groups at the chain-ends of the polyalkylene glycol, and
- n is the number of recurrent units forming the sequence copolycondensate chain.
- 6. The method of claim 3 wherein the polyether ester amide is characterized by a melting point of 120.degree. C., a shore hardness of 55D and a specific gravity of 1.06.
- 7. The method of claim 1 wherein the tackifying resin is a synthetic polyterpene resin having a softening point of 60 to 140.degree. C.
- 8. The method of claim 1 wherein the polyether ester amide is present in an amount of 10 to 20% by weight of the adhesive.
Parent Case Info
This application is a division of application Ser. No. 764,830, filed Aug. 12, 1985, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2523143 |
Sep 1983 |
FRX |
2533577 |
Mar 1984 |
FRX |
Non-Patent Literature Citations (1)
Entry |
Technical Information Bulletin of ATOCHEM, "PEBAX", Notice No. 18/FEV./84/50 from ATOCHEM S.A. |
Divisions (1)
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Number |
Date |
Country |
Parent |
764830 |
Aug 1985 |
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