Method of making indicator tapes

• US 5,518,763 A
• Filed: 06/05/1995
• Issued: 05/21/1996
• Est. Priority Date: 05/28/1992
• Status: Expired due to Term

• Current Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Original Assignee: Minnesota Mining and Manufacturing Co (3M Company)
• Inventors: D'Haese, Francois C., Morse, Dan J., Battles, Donald R., Patnode, Gregg A.
• Primary Examiner(s): PIANALTO, BERNARD D
• Application Number:
  US08/463,219
• Time in Patent Office: 351 Days
• Field of Search: 427/208, 427/208.6, 427/208.8, 427/210, 427/261, 427/288
• US Class Current: 427/208
• CPC Class Codes: A61L 2/28 Devices for testing the effectiveness or completeness of sterilisation, e.g. indicators which change colour apparatus involving enzymes or microorganisms C12M1/34; methods involving enzymes or microorganisms C12Q1/00
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2852 Adhesive compositions

Abstract

Sterilization indicator tapes utilizing moisture-resistant, water-dispersible, pressure sensitive adhesives are provided. The indicator tapes comprise a non-water-dispersible backing having a sterilization indicator thereon, which is coated on at least one side with the moisture-resistant, water-dispersible, pressure sensitive adhesive. The indicator tapes are useful to maintain a sterilization wrapper containing articles to be sterilized in a closed position during sterilization, and normal pre- and post-sterilization handling, while also providing a means to indicate if the wrapped articles have passed through a sterilization cycle. After use, the adhesives coating the indicator tapes disperse in aqueous alkali solutions, such as are found in commercial laundries, while the backing remains intact. Methods of making and using the indicator tapes are also provided.

Claims

1. A method of making an indicator tape comprising:

(a) providing a non-water-dispersible backing having opposing sides;

(b) printing a sterilization indicator comprising an indicator ink in combination with a binder on one of the sides of the backing, said indicator ink being capable of undergoing a color change when exposed to sterilization conditions; and

,

(c) coating a moisture-resistant, water-dispersible, pressure sensitive adhesive on the opposing side of the backing.