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US 8,772,403 B2Granted
Food grade marker
AssigneeIllinois Tool Works Inc.
InventorsNaresh B. Patel, William J. Zumdome, John P. Keating
Life of this patent
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Abstract
A food-grade marking composition useful for marking and labeling surfaces of food processing equipment includes a food grade base polymer, a coloring agent, and a volatile organic solvent. A marker pen is also provided which includes the food grade marking composition in combination with a delivery instrument. The food grade base polymer meets the regulatory requirements of 21 C.F.R. §175.300 for incidental food contact applications.
Claims14
A food grade marking composition, consisting essentially of:
- about 1-20% by weight food grade base polymer;
- about 2-20% by weight of a coloring agent;
- and
- about 60-97% by weight of a volatile organic solvent;
- wherein the food grade base polymer is a terpolymer of vinyl chloride, vinyl acetate and dicarboxylic acid and the solvent comprises a mixture selected from the group consisting of a) about 50-85% by weight acetone and about 15-50% by weight cyclohexanone and b) about 50-85% by weight methyl isobutyl ketone and about 15-50% by weight cyclohexanone, and
- the food grade marking composition is adapted for use with a marker pen.
3 more elements
A marker pen, comprising:
- a chamber containing a food grade marking composition;
- and
- a marker tip receiving the food grade marking composition from the chamber;
- wherein the marking composition consists essentially or about 1-20% by weight food grade base polymer, about 2-20% by weight of a coloring agent, and about 60-97% by weight of a volatile organic solvent;
- the food grade base polymer is a terpolymer of vinyl chloride, vinyl acetate and dicarboxylic acid;
- and the solvent comprises a mixture selected from the group consisting of a) about 50-85% by weight acetone and about 15-50% by weight cyclohexanone and b) about 50-85% by weight methyl isobutyl ketone and about 15-50% by weight cyclohexanone.
3 more elements
Dependencies are inferred from the claim text.