Permanent Pressure Sensitive Adhesive (PSA) - A synthetic rubber based hot melt that retains aggressive permanent tack. Products can be adjusted based on needed tack levels, substrates, coat weight, temperature extremes and performance test requirements. Permanent PSA's have good temperature range, bond to a wide variety of materials, and process in most standard hot melt equipment. Removable Pressure Sensitive Adhesive - Sometimes called fugitive glue. A synthetic rubber based hot melt that retains a low level of tack for temporary bonding of substrates. Products can be adjusted to meet performance needs and machinery requirements. Extended Open Time Adhesive - A hot melt that stays fluid and sticky for minutes, then sets to a non-tacky state. Working time can be adjusted depending on heat resistant requirements, substrates and application pattern. Ideal for replacing solvent based contact cements in many applications. Custom Development - Heartland will gladly consider custom formulating a hot melt adhesive if our standard products do not meet your requirements. Provided certain production volumes are achieved, we can modify most properties in our products.