Perforated roll of elastic wrap
AssigneeMinnesota Mining and Manufacturing Company
InventorsGeorge W. Augst, Margo A. Liberda, John E. Riedel
Life of this patent
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Abstract
A roll of perforated, elastic wrap 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 dressing where the ratio of perforation length to connecting segment length in each separation line is about 1:1 to 10:1 wherein the wrap can be longitudinally elongated between about 7 to 280 percent.
Claims23
Elastic wrap comprising an elastic substrate which can be longitudinally elongated between about 7 to 280 percent, the substrate having a longitudinal axis and a lateral axis having 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 wrap and a ratio of perforation length to connecting segment length of about 1:1 to 10:1, said elastic substrate selected from the group consisting of foam, woven fabric and nonwoven web, wherein the perforated wrap exhibits longitudinal stretch and recovery across said perforations.
A roll of elastic wrap comprising:
- a core, and
- b. a length of elastic wrap wound around the core;
- c. wherein the wrap comprises at least (i) an elastomeric binder-containing nonwoven fabric, and (ii) a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a plurality of about 0.2 to 5 mm 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 wrap exhibits longitudinal stretch and recovery across said perforations.
A method of dispensing elastic wrap comprising the steps of:
- a. unwinding a length of wrap from a roll of the wrap wherein the wrap comprises a binder-containing nonwoven web which includes a plurality of longitudinally spaced, laterally extending, perforated separation lines defined by a plurality of about 0.2 to 5 mm perforations separated by about 0.1 to 1 mm connecting segments of wrap and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated wrap exhibits longitudinal stretch and recovery across said perforations, and
- b. laterally tearing the wrap along a separation line to detach a length of wrap from the tape remaining on the core.
A roll of elastic wrap comprising an elastomeric binder-containing nonwoven web having a longitudinal axis and a lateral axis which is coated on a major surface with a cohesive material;
- the cohesively-coated web having 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 dressing and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated wrap exhibits longitudinal stretch and recovery across said perforations.
Elastic wrap comprising an elastic substrate which can be longitudinally elongated between about 25 to 280 percent, the substrate having a longitudinal axis and a lateral axis having 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 wrap and a ratio of perforation length to connecting segment length of about 1:1 to 10:1 wherein the perforated wrap exhibits longitudinal stretch and recovery across said perforations.
Dependencies are inferred from the claim text.