Method of making double-sided pressure-sensitive adhesive tape

A solvent-free method for the manufacture of pressure-sensitive adhesive tape comprising the steps of:

• (a) providing first and second solvent-free pressure-sensitive adhesive compositions and forming molten streams thereof;
• (b) providing a solvent-free backing-forming material and forming a molten stream thereof;
• (c) combining said streams into a single unified molten structure having a first layer of pressure-sensitive adhesive composition formed from said first molten stream of pressure-sensitive adhesive composition, a second layer of pressure-sensitive adhesive composition formed from said second molten stream of pressure-sensitive adhesive composition, and a layer of backing-forming material disposed between said pressure-sensitive adhesive layers, wherein at least one of said layers of adhesive is not coextensive;
• and
• (d) cooling said molten structure to yield a composite pressure-sensitive adhesive tape comprising a backing with first and second major surfaces formed from said backing-forming material, a first layer of normally tacky pressure-sensitive adhesive formed from said first layer of pressure-sensitive adhesive composition on said first major surface, and a second layer of normally tacky pressure-sensitive adhesive formed from said second layer of pressure-sensitive adhesive composition on said second major surface, wherein at least one of said layers of adhesive is non-coextensive.