Labels and Tags for High Temperature Applications

Abstract

Various tags and adhesive labels are described which can be used in high temperature environments such as up to 1,000° C. The tags and labels include a substrate having one or more high temperature printable coatings. The labels can also include pressure sensitive adhesives and optional release liners.

What is claimed is: 
     
         1 . A printable tag for high temperature applications, the tag comprising:
 a coated substrate defining at least one print receptive face, the print receptive face having a high temperature printable coating disposed thereon, wherein the coating comprises pigment dispersed in a siloxane binder, and wherein the coating further comprises one or more dispersing agents.   
     
     
         2 . The tag of  claim 1 , wherein the concentration of the one or more dispersing agents in the coating is less than or equal to 10 wt %. 
     
     
         3 . The tag of  claim 1 , wherein the solids content of the coating ranges from 40 wt % to 60 wt %. 
     
     
         4 . The tag of  claim 1 , wherein the coating further comprises mica particulates, wherein the concentration of the mica particulates in the coating is less than or equal to 15 wt %. 
     
     
         5 . The tag of  claim 1 , wherein the coating further comprises a crosslinker, wherein the concentration of the crosslinker in the coating ranges from 0.5 wt % to 1.5 wt %. 
     
     
         6 . The tag of  claim 1 , wherein the coating has a thickness ranging from 10 microns to 20 microns. 
     
     
         7 . The tag of  claim 1 , wherein the concentration of the siloxane binder in the coating ranges from 50 wt % to 70 wt %. 
     
     
         8 . The tag of  claim 1 , further comprising:
 one or more layers or regions of a top coat.   
     
     
         9 . The tag of  claim 8 , wherein the one or more layers or regions of the top coat comprises acrylic acid or methacrylic acid. 
     
     
         10 . The tag of  claim 8 , wherein the one or more layers or regions of the top coat comprises a phenoxy resin. 
     
     
         11 . A printable tag for high temperature applications, the tag comprising:
 a coated substrate defining at least one print receptive face, the print receptive face having a high temperature printable coating disposed thereon, wherein the coating comprises pigment dispersed in a siloxane binder, and wherein the coating does not comprise an extender.   
     
     
         12 . The tag of  claim 11 , wherein the concentration of the one or more dispersing agents in the coating is less than or equal to 10 wt %. 
     
     
         13 . The tag of  claim 11 , wherein the solids content of the coating ranges from 40 wt % to 60 wt %. 
     
     
         14 . The tag of  claim 11 , wherein the coating further comprises mica particulates, wherein the concentration of the mica particulates in the coating is less than or equal to 15 wt %. 
     
     
         15 . The tag of  claim 11 , wherein the coating further comprises a crosslinker, wherein the concentration of the crosslinker in the coating ranges from 0.5 wt % to 1.5 wt %. 
     
     
         16 . The tag of  claim 11 , wherein the coating has a thickness ranging from 10 microns to 20 microns. 
     
     
         17 . The tag of  claim 11 , wherein the concentration of the siloxane binder in the coating ranges from 50 wt % to 70 wt %. 
     
     
         18 . The tag of  claim 11 , further comprising:
 one or more layers or regions of a top coat.   
     
     
         19 . The tag of  claim 18 , wherein the one or more layers or regions of the top coat comprises acrylic acid, methacrylic acid, or a phenoxy resin. 
     
     
         20 . A method of labeling a surface having a temperature within a range of from 200° C. to 500° C., the method comprising:
 providing a label including (i) a substrate defining a first face and an oppositely directed second face, (ii) pressure sensitive adhesive disposed on the second face of the substrate, and (iii) a high temperature printable coating disposed on the first face of the substrate, wherein the coating comprises pigment dispersed in a siloxane binder, and wherein the coating further comprises one or more dispersing agents; and 
 applying the label to a surface having a temperature within a range of from 200° C. to 500° C.