Perforated roll of nonwoven surgical tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsGeorge W. Augst, Margo A. Liberda
Life of this patent
Estimating the term…
Abstract
A roll of linerless, perforated, nonwoven, surgical tape including a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a series of about 0.2 to 5 mm perforations separated by about 0.1 to 1 mm connecting segments of tape where the ratio of perforation length to connecting segment length in each separation line is about 1:1 to 10:1.
Claims16
A roll of adhesive tape comprising a binder-containing nonwoven web having a longitudinal axis and a lateral axis which is coated on a major surface with a pressure sensitive adhesive which web is substantially resistant to tearing along the lateral axis and which is linerless;
- the adhesively-coated web having a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a series of about 0.2 to 5 mm substantially linear perforations separated by about 0.1 to 1 mm connecting segments of tape and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated tape has a tensile strength of at least about 400 grams per centimeter width and not more than about 3000 grams per centimeter width.
A roll of surgical tape comprising:
- (a) a core, and
- (b) a length of linerless adhesive tape wound around the core;
- (c) wherein the tape comprises at least (i) a binder-containing nonwoven fabric coated on a major surface with a skin compatible pressure sensitive adhesive which is substantially resistant to tearing across the width of the tape, and (ii) a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a plurality of about 0.2 to 5 mm substantially linear perforations separated by about 0.1 to 1 mm connecting segments of tape and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated tape has a tensile strength of at least about 400 grams per centimeter width and not more than about 3000 grams per centimeter width.
A method of dispensing nonwoven tape comprising the steps of:
- (a) unwinding a length of linerless tape from a wound core of the tape wherein the tape comprises a binder-containing nonwoven web coated on a major surface with a pressure sensitive adhesive which tape is substantially resistant to tearing across the width of the tape which includes a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a plurality of longitudinally spaced, defined by a plurality of about 0.2 to 5 mm substantially linear perforations separated by about 0.1 to 1 mm connecting segments of tape and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated tape has a tensile strength of at least about 400 grams per centimeter width and not more than 3000 grams per centimeter width, and
- (b) laterally tearing the tape along a separation line to detach a length of tape from the tape remaining on the core.
A roll of adhesive tape comprising a binder-containing nonwoven fabric having a longitudinal axis and a lateral axis which is linerless, coated on a major surface with a pressure sensitive adhesive, and is substantially resistant to tearing along the lateral axis;
- the adhesively-coated web having a plurality of longitudinally, about uniformly spaced, laterally extending, perforated separation lines defined by a series of about 0.2 to 5 mm substantially linear perforations separated by about 0.1 to 1 mm connecting segments of tape and a ratio of perforation length to connecting segment length of about 1:1 to 10:1;
- wherein the perforated tape has a tensile strength of at least 400 grams per centimeter width and not more than 3000 grams per centimeter width.
Dependencies are inferred from the claim text.