Method of fabricating a tape for tape rule
OwnerShih-Lin Leeinventor
Life of this patent
Estimating the term…
Abstract
A method of fabricating a tape for a tape rule disclosed herein comprises the steps of adding a dyestuff into a polyester material mixed with a binding glue and churning the mixture so as to offer the polyester material a specified color; adhering the colored polyester material by rolling with a 150° C. hot roller to both surfaces of a steel tape so as to form a base coat film; printing graduations on one or both surfaces of the tape already having the base coating; drying the tape by infrared radiation; rolling a mixture of a transparent polyester and a binding glue with the 150° C. hot roller on both surfaces of the tape to form a protecting layer; and finishing fabrication of the tape. The tape fabricated is flat, stiff, flexible, and friction resistant, also capable of saving production costs.
Claims4
A method of fabricating a tape for a tape rule comprising the steps of:
- (a) establishing a flexible steel tape substrate having opposed first and second surfaces;
- (b) churning a first mixture including a dyestuff component, a polyester material component, and a binding glue component to form a colored polyester material;
- (c) hot rolling said colored polyester material onto said tape substrate at a predetermined constant temperature to form a coated tape substrate having disposed on each of said opposed first and second surfaces a base coat film layer;
- (d) applying indicia to said base coat film layer of at least said first surface;
- (e) drying said coated tape by exposure to infrared radiation;
- (f) forming a second mixture including a substantially transparent polyester material component and a binding glue component;
- and,
- (g) hot rolling at said predetermined constant temperature said second mixture and said coated tape substrate to form a flexible finished tape having a protecting layer disposed over said base coat film layer of each said first and second surface.
Dependencies are inferred from the claim text.