Method for manufacturing high temperature-resistant polyvinyl chloride adhesive tape

Abstract

The present invention relates to a method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape, and more particularly to a method and a production process for manufacturing a high temperature-resistant adhesive tape by applying a UV-crosslinkable hot-melt pressure-sensitive adhesive to a high temperature-resistant polyvinyl chloride film. The high temperature-resistant polyvinyl chloride film is a high temperature-resistant material containing a liquid polymeric plasticizer, a solid polymeric plasticizer, and a heat stabilizer. The hot-melt pressure-sensitive adhesive can be directly coated onto the high temperature-resistant polyvinyl chloride film at 130-150° C.; and then crosslinked and cured by UV irradiation, to make a high temperature-resistant polyvinyl chloride adhesive tape. Compared with conventional polyvinyl chloride adhesive tapes, the high temperature-resistant polyvinyl chloride adhesive tape manufactured using the method for manufacturing a novel high temperature-resistant polyvinyl chloride adhesive tape provided in the present invention has the advantages of non-volatility and resistance to high temperature and is highly environmentally friendly.

What is claimed is: 
     
         1 . A method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape, comprising:
 coating, as a hot melt, a UV-crosslinkable hot-melt pressure-sensitive adhesive onto a high temperature-resistant polyvinyl chloride film at a temperature of 130-150° C., and then crosslinking by UV irradiation with a set of UV lamps, wherein the high temperature-resistant polyvinyl chloride film comprises a liquid polymeric plasticizer, a solid polymeric plasticizer, and a heat stabilizer;   wherein the high temperature-resistant polyvinyl chloride film is protected by cooling during the coating process.   
     
     
         2 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the UV-crosslinkable hot-melt pressure-sensitive adhesive comprises a copolymer of one or more polymerizable photoinitiators and an acrylate monomer, or a mixture of an oligomer containing one or more polymerizable photoinitiators and an acrylate polymer. 
     
     
         3 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 2 , wherein the UV-crosslinkable hot-melt pressure-sensitive adhesive further comprises a heat stabilizer, a photostabilizer, a tackifying resin, and a plasticizer. 
     
     
         4 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the liquid polymeric plasticizer is at least one selected from the group consisting of liquid polyethylene glycol adipate and liquid polypropylene glycol adipate. 
     
     
         5 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the solid polymeric plasticizer is at least one selected from the group consisting of an ethylene-vinyl acetate copolymer, an ethylene-methyl acrylate copolymer, an ethylene-ethyl acrylate copolymer, an ethylene-butyl acrylate copolymer, a nitrile butadiene rubber powder, and chlorinated polyethylene. 
     
     
         6 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the heat stabilizer is at least one selected from the group consisting of a non-lead liquid or a solid barium/zinc stabilizer, a cadmium/barium/zinc stabilizer, a calcium/zinc stabilizer, and an organotin stabilizer. 
     
     
         7 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 2 , wherein the polymerizable photoinitiator is an acetophenone or benzophenone derivative containing a methacryloyloxy group or an acryloyloxy group. 
     
     
         8 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the amount coated of the UV-crosslinkable hot-melt pressure-sensitive adhesive in hot melt coating is 10-35 g/cm 2 . 
     
     
         9 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the UV lamp is a high-pressure mercury lamp, a medium-to-low pressure mercury lamp or an LED lamp, having a UV irradiation energy of at least 10 mJ/cm 2 . 
     
     
         10 . The method for manufacturing a high temperature-resistant polyvinyl chloride adhesive tape according to  claim 1 , wherein the coating is carried out by means of slot-die coating, bar coating or extrusion laminating.