Abstract: Pressure sensitive adhesive (PSA) polymers, especially low Tg, high tack, nonpolar and polar polymers useful in formulating PSA can be solubilized or dispersed in a supercritical fluid (SCF), such as liquid CO2 or supercritical CO2, using an organic cosolvent such as toluene. PSA polymers can be polymerized in SCF fluids to make unique adhesive products. Inclusion of a fluorinated reactant in the SCF polymerization process yields a PSA with improved resistance to mineral oil.

Abstract: Disclosed is an assembly for splitting open contents-filled garbage bags selected from bags filled with yard waste and bags filled with cans and bottles. The assembly is composed of a flighted conveyor that conveys the filled garbage bags into a confined bag splitter assembly. The bag splitter assembly has sidewalls to confine filled garbage bags therein and has an overhead array of blade assemblies laterally spaced across the conveyor for confronting filled garbage bags conveyed by said conveyor into the bag splitter assembly. The blade assemblies are composed of a pivotally mounted blade holder disposed above the conveyor and carry horizontally-disposed canard-like blades having a forward point for confronting the filled garbage bags. The blades are disposed substantially continuously laterally across the width of the bag splitter assembly. For garbage bags filled with cans and bottles, the blades have a forward tip carry pointed elongate elements for puncturing the bags.