Method of forming heat activated transfer for improved adhesion and reduced bleedthrough
AssigneeSpecialty Adhesive Film Co.
InventorsJohn Mahn, Jr., John Mahn, Sr.
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Abstract
A laminate suitable for formation of athletic lettering and other decoratives which has improved adhesion and reduced curling is formed by forming a laminate from a pigmented polyurethane and a polyester adhesive layer. Either the individual lamina prior to lamination, or the formed laminate are annealed for 1 to 100 hours at a temperature from 100° to 250° F. to relieve stress and prevent curling. Preferably, the polyurethane layer does not include any external lubricants and has a high durometer which, in turn, permits formation of letters on letters without bleedthrough and with improved adhesion.
Claims14
A non-curling laminate suitable for use in athletic lettering formed by thermoplastically bonding a pigmented thermoplastic film having a first melting temperature to a thermoplastic adhesive layer having a second melting temperature wherein said laminate is maintained at a temperature of at least 100° F. and less than said first and second melting temperatures for a period of time effective to form said non-curling laminate said period of time being at least one hour.
A pigmented laminate having a pigmented layer and a thermoplastic adhesive layer bonded together, said pigmented layer substantially void of external lubricants, wherein said pigmented layer is a thermoplastic polymeric film which has been heated for a combined time and temperature effective to release stress in said pigmented layer to prevent curling of said formed laminate.
Dependencies are inferred from the claim text.