Recyclable indicator tape for sterilization

Patent metadata

Field	Value
Publication number	US-9457115-B2
Application number	US-201414278049-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 31, 2013
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

There is provided a sterilization indicating tape having a breathable and liquid impervious film, wherein the tape is printed with a sterilization indicator ink. The tape is compatible with a wrap polymer for recycling. The tape is used to hold a wrapped package closed so that it can be sterilized and stored. The ink changes color upon sterilization to show the user that the package has been subject to sterilization. The tape is desirably made from the same or a similar polymer to the wrap polymer so that they may be recycled together.

First claim

I claim:

1. A sterilization indicating tape comprising a breathable and liquid impervious film, wherein said film comprises a core layer including a thermoplastic polymer and a particulate filler, wherein said tape is printed with an indicator ink and wherein said tape is compatible with a wrap polymer, wherein said tape and said wrap polymer are recyclable, wherein said film has a first side and a second side, wherein said film is joined on to a nonwoven spunbond layer on the first side, the second side, or both.

2. The tape of claim 1 , wherein said ink indicates sterilization by ethylene oxide or steam.

3. The tape of claim 1 , wherein said film has a basis weight between 0.2 and 1.0 osy (6.8 and 33.9 gsm).

4. The tape of claim 1 , wherein said film has a basis weight of about 0.6 osy (20.3 gsm).

5. The tape of claim 1 , wherein said film comprises polypropylene.

6. The tape of claim 1 , wherein said film comprises polyethylene.

7. The tape of claim 1 , wherein said thermoplastic polymer includes an olefin polymer.

8. The tape of claim 1 , wherein said film further includes a first outer skin layer and a second outer skin layer, wherein the first outer skin layer, the second outer skin layer, or both include a thermoplastic polymer.

9. The packaging material of claim 8 , wherein said thermoplastic polymer includes an olefin polymer.

10. The packaging material of claim 8 , wherein said particulate filler has a mean diameter of from about 0.1 microns to about 10 microns.

11. The tape of claim 1 , wherein said particulate filler has a mean diameter of from about 0.1 microns to about 10 microns.

12. A packaging material comprising a wrap and tape, wherein said wrap and tape are made from polymeric materials that are compatible and recyclable, wherein said tape comprises a breathable and liquid impervious film, wherein said film comprises a core layer including a thermoplastic polymer and a particulate filler, wherein said film has a first side and a second side, wherein said film is joined on to a nonwoven spunbond layer on the first side, the second side, or both, and wherein said tape is printed with a sterilization indicator ink.

Assignees

• Avent Inc

Inventors

• Keck Laura E

Classifications

• A61L2/28 Primary

  Devices for testing the effectiveness or completeness of sterilisation or disinfection, e.g. indicators which change colour · CPC title

• G01N31/226

  for investigating the degree of sterilisation · CPC title

• Y02W30/80

  Packaging reuse or recycling, e.g. of multilayer packaging (bio-packaging Y02W90/10) · CPC title