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US4202925A Expired / Lapsed US ⏱️ 0.0 years remaining

Paper surgical tape

Assignee: Johnson and Johnson
•
Filing: 1978-04-04
•
Granted: 1980-05-13
•
Expires: 1998-04-04
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Abstract

Abstract An adhesive tape which includes an acrylic pressure sensitive adhesive mass coated on one side of a saturated paper, said paper (1) being saturated with from 20 to 75 parts per hundred parts paper of an acrylic polymer having a T g of less than 20° C., and (2) comprising a mixture of woodpulp and thermoplastic fibers, said woodpulp comprising from about 10 to 75% by weight of the paper, and said thermoplastic fibers ranging in length, on the average, from about 1/4 to 3/4 of an inch and being selected from the group consisting of polyamide, polyester, polypropylene and polyethylene fibers, and a backsize coated on the other side of said paper, said backsize preferably being selected from the group consisting of styrene copolymers having a T g of at least 35° C., silicones, fluorocarbons, long chain fatty acids, long chain fatty acid derivatives and mixtures thereof. Preferably the pressure sensitive mass is a blend of a copolymer of 2 ethylhexyl acrylate and vinyl acetate with a copolymer of 2 ethylhexyl acrylate and tert-butyl acrylamide. The instant tape is especially useful as a surgical tape and has an improved combination of the properties of conformability, straight tear and resistance to curling. Moreover, because of the high amounts of woodpulp included in the paper utilized in making the instant tape, an economical product is obtained.

Inventors

  • 👤 Winifred C. Dabroski

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 22:02
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/20; A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J2400/00; C09J2400/20; C09J2400/28; C09J2400/283; Y; Y10; Y10S; Y10S602/00; Y10S602/903; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31663; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 120 words
A surgical adhesive tape which includes a pressure sensitive adhesive mass coated on one side of a saturated paper, said paper (1) being saturated with from 20 to 75 parts per hundred parts paper of an acrylic polymer having a T g of less than 20° C., and (2) comprising a mixture of randomly dispersed woodpulp and thermoplastic fibers, said woodpulp comprising from about 10 to 75% by weight of the paper, and said woodpulp and thermoplastic fibers ranging in length, on the average, from about 1/4 to 3/4 of an inch and said thermoplastic fibers being selected from the group consisting of polyamide, polyester, polypropylene and polyethylene fibers and a backsize coated on the other side of said paper.
Claim 2
Dependent Claim 120 words
A surgical adhesive tape which includes a pressure sensitive adhesive mass coated on one side of a saturated paper, said paper (1) being saturated with from 20 to 75 parts per hundred parts paper of an acrylic polymer having a T g of less than 20° C., and (2) comprising a mixture of randomly dispersed woodpulp and thermoplastic fibers, said woodpulp comprising from about 10 to 75% by weight of the paper, and said woodpulp and thermoplastic fibers ranging in length, on the average, from about 1/4 to 3/4 of an inch and said thermoplastic fibers being selected from the group consisting of polyamide, polyester, polypropylene and polyethylene fibers and a backsize coated on the other side of said paper.
Claim 3
Dependent Claim 40 words
The tape of claim 1 wherein said backsize is selected from the group consisting of styrene copolymers having a T g of at least 35° C., silicones, fluorocarbons, long chain fatty acids, long chain fatty acid derivatives and mixtures thereof.
Claim 4
Dependent Claim 19 words
The tape of claim 1 wherein said pressure sensitive adhesive is a copolymer of 2-ethylhexyl acrylate and vinyl acetate.
Claim 5
Dependent Claim 12 words
The tape of claim 1 wherein said thermoplastic fiber is a polyester.
Claim 6
Dependent Claim 12 words
The tape of claim 1 wherein said backsize includes a styrene copolymer.
Claim 7
Dependent Claim 17 words
The tape of claim 5 wherein said styrene copolymer is a copolymer of styrene, ethylacrylate and butadiene.
Claim 8
Dependent Claim 19 words
The tape of claim 6 wherein said backsize additionally includes a silicone release agent coated on said styrene copolymer.
Claim 9
Dependent Claim 29 words
The tape of claim 1 wherein said pressure sensitive adhesive is coated onto said paper at a level of from about 0.6 to about 0.9 ounces per square yard.
Claim 10
Dependent Claim 26 words
The tape of claim 1 wherein said backsize is coated on said paper at a level of from about 0.1 to 0.2 ounces per square yard.
Claim 11
Dependent Claim 20 words
The tape of claim 3 wherein said pressure sensitive adhesive additionally includes a copolymer of 2-ethylhexyl acrylate and N-tert-butyl acrylamide.

References Cited (Backward Citations)

US3154430A Cited
US3121021A Cited
US3523846A Cited
US3677788A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-05-13 1983-11-12 1984-05-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-05-13 1987-11-12 1988-05-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-05-13 1991-11-12 1992-05-13 $7700.00 Window Closed / Lapsed

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