Archives

A natural or synthetic material whose molecular structure is composed of many repeated units bonded together. Common examples of synthetic polymers include plastics, such as polyester, PVC, and polythene. Examples of natural polymers are latex rubber and polyamides (proteins).… Read the rest

The time during which the applied glue remains sufficiently tack (sticky) for you to begin making the bond. Fast setting hot melt adhesives have open times of mere seconds. For pressure-sensitive adhesives, however, the open time is infinite. … Read the rest

A fabric in which the fibers bind together through a process other than weaving. Both chemical and mechanical agents, plus treatment by either heat or solvents, are used in the bonding processes to make non-woven fabrics. Examples of products made … Read the rest

How well glue spreads over a surface and wets it. Melt viscosity is dependent on temperature. It decreases as the temperature rises.… Read the rest

A measure of how well hot melt adhesive flows when extruded. A higher melt flow index means the glue will flow easier, but its mechanical properties, such as strength and flexibility, will be decreased.… Read the rest

A thermoplastic glue that is solid at room temperature, heated to a molten state for use and applied to substrates that bond together as it dries.… Read the rest

A device that heats and melts solid hot melt adhesive then either extrudes or sprays the molten glue onto a substrate. Solid glue sticks are placed in the back of the glue gun; molten glue is squeezed from the gun … Read the rest

A temporary glue with a high alcohol content often used to hold materials together during product assembly and the application of hot melt adhesive. Fugitive glue evaporates after some time.… Read the rest

A machine that pushes out molten adhesive onto the substrate. It typically extrudes small dots of adhesive either singly or in a set pattern.… Read the rest

The toughening and hardening process of the hot melt adhesive, as a result of polymer chains cross-linking in the glue.… Read the rest