Self-releasing lint tape
View Patent ↗A lint tape that contains a base sheet and an adhesive coating is generally provided. The base sheet is formed from a fibrous web that is impregnated with a binder composition, and the adhesive coating includes a pressure-sensitive adhesive and a detackifying agent. Through appropriate selection of the type and amount of the various components employed, the present inventor has discovered that the resulting lint tape is conformable to a variety of surfaces and “self-releasable”, i.e., releasable without the need for an additional release coating.
1. A lint tape consisting of:
a base sheet containing a fibrous web impregnated with a binder composition, the base sheet defining a first surface and an opposing second surface, wherein said opposing second surface of said base sheet has no release layer present thereon; and
an adhesive coating disposed on said first surface of said base sheet, wherein said adhesive coating comprises a pressure-sensitive adhesive and a detackifying agent in a respective weight ratio of from about 1:1 to about 20:1, wherein said pressure-sensitive adhesive contains a latex polymer having a glass transition temperature of less than about 10° C.
2. A lint tape as in claim 1 , wherein said latex polymer has a glass transition temperature of less than about 0° C.
3. A lint tape as in claim 1 , wherein said latex polymer has a glass transition temperature of less than about −20° C.
4. A lint tape as in claim 1 , wherein said detackifying agent comprises a clay.
5. A lint tape as in claim 4 , wherein said detackifying agent comprises a kaolin clay.
6. A lint tape as in claim 1 , wherein said latex polymer comprises an acrylic latex.
7. A lint tape as in claim 1 , wherein said binder composition comprises an acrylic latex.
8. A lint tape as in claim 1 , wherein said opposing second surface of said base sheet defines a creping pattern.
9. A lint tape as in claim 1 , wherein said fibrous web comprises cellulosic fibers.
10. A lint tape product comprising
a first lint tape layer comprising a base sheet and an adhesive coating, wherein said base sheet comprises a fibrous web impregnated with a binder composition, wherein said adhesive coating comprises a pressure-sensitive adhesive and a detackifying agent in a respective weight ratio of from about 1:1 to about 20:1, said pressure-sensitive adhesive comprising a latex polymer having a glass transition temperature of less than about 10° C.;
a second lint tape layer comprising a base sheet and an adhesive coating, wherein said base sheet comprises a fibrous web impregnated with a binder composition;
wherein said first lint tape layer and said second lint tape layer are positioned such that said adhesive coating of said first lint tape layer directly contacts said fibrous web of said second lint tape layer without any release layer on the second lint tape layer.
11. A lint tape product as in claim 10 , wherein said first lint tape layer and said second lint tape layer are wound on a roll such said adhesive coating of said second lint tape layer is exposed.
12. A lint tape product as in claim 11 , wherein said first lint tape layer and said second lint tape layer comprise individual fibrous webs.
13. A lint tape product as in claim 11 , wherein said first lint tape layer and said second lint tape layer comprise a continuous paper web wound around a roll.
14. A lint tape product as in claim 10 , wherein said first lint tape layer and said second lint tape layer are stacked.
15. A lint tape product as in claim 10 , wherein said adhesive coating of said second lint tape layer comprises a pressure-sensitive adhesive and a detackifying agent in a respective weight ratio of from about 1:1 to about 20:1, said pressure-sensitive adhesive comprising a latex polymer having a glass transition temperature of less than about 10° C.
16. A lint tape product as in claim 15 , further comprising
a third lint tape layer comprising a base sheet and an adhesive coating, wherein said base sheet comprises a fibrous web impregnated with a binder composition, wherein said third lint tape layer is arranged such that said adhesive coating of said second lint tape layer contacts said fibrous web of said third lint tape layer.
17. A lint tape product as in claim 10 , wherein said base sheet of said first lint tape layer has been creped to define a creped surface and an uncreped surface, and wherein said adhesive coating of said first lint tape layer is applied to said uncreped surface.
18. A lint tape product as in claim 10 , wherein said detackifying agent comprises a clay.
19. A lint tape product as in claim 10 , wherein said detackifying agent and comprises a kaolin clay.
20. A lint tape product as in claim 10 , wherein said latex polymer comprises an acrylic latex.
21. A lint tape as in claim 1 , wherein said adhesive coating comprises the pressure-sensitive adhesive and the detackifying agent in a respective weight ratio of from about 2:1 to about 15:1.
22. A lint tape as in claim 1 , wherein said adhesive coating comprises the pressure-sensitive adhesive and the detackifying agent in a respective weight ratio of from about 4:1 to about 10:1.
23. A lint tape product as in claim 10 , wherein the first lint tape layer consists of the base sheet and the adhesive coating, and wherein the second lint tape layer consists of the base sheet and the adhesive coating.