Method for making thermochromic writing instruments

Details Method for making thermochromic writing instruments Method for making thermochromic writing instruments

1997-01-06

1997-12-16

Beck, Shrive

Coating processes

Nonuniform coating

Wrinkled or crackled coating

427258, 427333, 4274071, 446 14, B32B 500, B32B 100

Patent

active

056982631

ABSTRACT:
A method for making thermochromic writing instruments including the steps of: coating the writing instruments with liquid crystals; curing the coated writing instruments; coating the writing instruments with an acrylic polymer emulsion; curing the coated writing instruments; coating the writing instruments with a colloidal lacquer; curing the coated writing instruments; coating the writing instruments with a nitrocellulose lacquer; and curing the coated writing instruments.

REFERENCES:
patent: 4045383 (1977-08-01), Koff
patent: 4425161 (1984-01-01), Shibahashi et al.
patent: 5194183 (1993-03-01), Munch et al.
patent: 5242617 (1993-09-01), Metzger et al.
patent: 5376699 (1994-12-01), Sage
patent: 5618581 (1997-04-01), Sheets

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