Elastic and heat sealable medical tapes

• US 5,629,079 A
• Filed: 01/18/1995
• Issued: 05/13/1997
• Est. Priority Date: 09/30/1991
• Status: Expired due to Term

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: Huang, Audrey S., Joseph, Eugene G., Reed, John F., Battles, Donald R., Purrington, Scott M.
• Primary Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US08/374,133
• Time in Patent Office: 846 Days
• Field of Search: 428/343, 428/354, 428/297, 428/298, 428/903, 428/284, 428/288, 428/369, 428/373, 428/230, 604/339, 604/344
• US Class Current: 442/60
• CPC Class Codes: A61F 13/0269 Tapes for dressing attachment for stoma bags A61F5/443; for nappies or sanitary towels A61F13/58; wound closure tapes A61B17/085; for surgical drapes A61B46/00; attaching catheters A61M25/02
• CPC Class Codes: A61F 13/537 characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer A61F13/538 takes precedence
• CPC Class Codes: A61F 2013/00578 conformable; soft or flexible, e.g. elastomeric
• CPC Class Codes: A61F 2013/00604 Multilayer
• CPC Class Codes: A61F 2013/00663 acrylic
• CPC Class Codes: A61F 2013/00697 elastomer-, e.g. rubber- based
• CPC Class Codes: A61F 2013/00778 porous layers
• CPC Class Codes: A61F 2013/00863 with pores
• CPC Class Codes: A61F 2013/00978 attachments assembly for prosthesis; pouch, e.g. ostomy
• CPC Class Codes: A61F 2013/00982 anallergic or hypoallergic material
• CPC Class Codes: A61F 2013/15048 for protection against contamination, or protection in using body disinfecting wipes
• CPC Class Codes: A61F 2013/15292 Resistance, i.e. modulus or strength
• CPC Class Codes: A61F 2013/15447 Fibre dimension, e.g. denier or tex
• CPC Class Codes: A61F 2013/15967 by meltblown technique
• CPC Class Codes: A61F 2013/49042 with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length
• CPC Class Codes: A61F 2013/530138 characterized by the fibre length
• CPC Class Codes: A61F 2013/530218 followed by heat treatment
• CPC Class Codes: A61F 2013/530226 with polymeric fibres
• CPC Class Codes: A61F 2013/530343 being natural fibres
• CPC Class Codes: A61F 2013/53445 from several sheets
• CPC Class Codes: A61F 2013/53908 : with adhesive
• CPC Class Codes: A61F 2013/5395 : with thermoplastic agent, i.e. softened by heat
• CPC Class Codes: A61F 2013/53983 : with hook and loop-type fastener or the like
• CPC Class Codes: A61F 2013/8491 : including test methods
• CPC Class Codes: A61F 5/443 : having adhesive seals for securing to the body, e.g. of hydrocolloid type, e.g. gels, starches, karaya gums adhesives or sealing pads therefor A61L24/00
• CPC Class Codes: D04H 1/54 : by welding together the fibres, e.g. by partially melting or dissolving in combination with needling D04H1/485
• CPC Class Codes: D04H 1/56 : in association with fibre formation, e.g. immediately following extrusion of staple fibres
• CPC Class Codes: Y10S 428/903 : Microfiber, less than 100 micron diameter
• CPC Class Codes: Y10T 428/2848 : Three or more layers
• CPC Class Codes: Y10T 442/2008 : Fabric composed of a fiber or strand which is of specific structural definition
• CPC Class Codes: Y10T 442/2754 : Pressure-sensitive adhesive

Abstract

The present invention provides a medical tape comprising a highly conformable and deformable nonwoven web coated with an adhesive. The non-adhesive side of the web may be heat bonded to many different polymeric film materials and is particularly useful with ostomy pouch films. The present invention also provides ostomy bags comprising an elastic, breathable nonwoven based medical tape.

Claims

1. An elastomeric medical tape, comprising:

an extensible nonwoven web comprising meltblown multilayered microfibers having at least one first layer of an elastomeric material and at least one second layer of a heat bondable material; and

a layer of pressure sensitive adhesive on at least one face of said web, wherein said medical tape has an extensibility of at least 100%.

2. The elastomeric medical tape of claim 1, wherein said tape is capable of being heat or sonically bonded to a polymer substrate selected from the group consisting of polyethylene-based polymers and polyethylene-based copolymers.

3. The elastomeric medical tape of claim 1, wherein said tape has a moisture vapor transmission rate at least 500 g m^-2 24 hrs^-1.

4. The elastomeric medical tape of claim 3, wherein said tape is sonically or heat bonded to an ostomy appliance.

5. The elastomeric medical tape of claim 1, wherein the elastomeric material has a heat bonding temperature at least 15 degrees centigrade higher than said heat bondable material.

6. The elastomeric medical tape of claim 1, wherein the layers of said microfibers are concentrically layered.

7. The elastomeric medical tape of claim 1, wherein the layers of said microfibers are longitudinally layered.

8. The elastomeric medical tape of claim 6, wherein the outer sheath layer comprises a heat or sonic bonding layer with at least one internal core layer of an elastomeric material.

9. The elastomeric medical tape of claim 8, wherein the outer bonding layer is selected from the group consisting of ethylene copolymers, ethylene polymers and ethylene vinyl acetate copolymers.

10. The elastomeric medical tape of claim 9, wherein the inner elastomeric layer comprises a polyurethane.

11. The elastomeric medical tape of claim 2, wherein the average fiber diameter is less than about 10 micrometers.

12. The elastomeric medical tape of claim 7, wherein at least one layer of the microfiber is an outer bonding layer comprising a heat or sonic bonding material.

13. The elastomeric medical tape of claim 12, wherein the outer bonding layer is selected from the group consisting of ethylene copolymers, ethylene polymers and ethylene vinyl acetate copolymers.

14. The elastomeric medical tape of claim 13, wherein the inner elastomeric layer comprises a polyurethane.

15. An elastomeric medical tape, comprising:

an extensible nonwoven web comprising an elastomeric meltblown microfiber comprising a polymer selected from the group consisting of polyurethane, polyetherester, polyamide, and blends thereof and a sufficient amount of a heat bondable material wherein said medical tape is capable of being heat or sonically bonded to a polymer substrate selected from the group consisting of polyethylene-based polymers and polyethylene-based copolymers; and

a layer of pressure sensitive adhesive on at least one face of said web.

16. The elastomeric medical tape of claim 15, wherein the heat bondable material is selected from the group consisting of ethylene copolymers, ethylene polymers and ethylene vinyl acetate copolymers.

17. The elastomeric medical tape of claim 15, wherein the elastomeric microfiber comprises a polyurethane.

18. The elastomeric medical tape of claim 15, wherein the heat bondable material is selected from the group consisting of melt blown multilayered microfibers, melt blown monolayer microfibers, and staple fibers.

19. The elastomeric medical tape of claim 15, wherein said tape is sonically or heat bonded to an ostomy appliance.