Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1985-11-18
1987-05-12
McCamish, Marion C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428204, 428325, 428913, 15624411, G02B 5128
Patent
active
046649662
ABSTRACT:
A transparent cover film better protects enclosed-lens retroreflective sheeting and can be applied more economically when it is extruded and is a thermoplastic polymer which has good elongation and minimal elastic memory. Preferred polymers are (a) aliphatic urethanes and (b) copolymers of ethylene or propylene.
REFERENCES:
patent: 2407680 (1945-03-01), Palmquist et al.
patent: 4511210 (1985-04-01), Tung et al.
Bailey Terry R.
Haunschild Dale H.
McCamish Marion C.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
Tamte Roger R.
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