Most varicose and spider veins appear in the legs due to the pressure of body weight, force of gravity, and task of carrying blood from the bottom of the body up to the heart. Compared with other veins in the body, leg veins have the toughest job of carrying blood back to the heart. They endure the most pressure.
Curing a thermosetting resin transforms it into a plastic, or elastomer by crosslinking or chain extension through the formation of covalent bonds between individual chains of the polymer. Crosslink density varies depending on the monomer or prepolymer mix, and the mechanism of crosslinking:
UV Curing Adhesives Information. UV curing adhesives use ultraviolet (UV) light or other radiation sources to initiate curing and form a permanent bond without heating. Ultraviolet (UV) or visible light cures or polymerizes a combination of monomers and oligomers in a UV adhesive. UV adhesives are also known as radiation curing or radcure adhesives because UV is a radiant energy sources. Electron beam curable adhesives are another type of radiation curable adhesive.