초록 ▼

Multi-layer footwear formed of laminated layers of material which are sealed together with a polymeric glue used in the original manufacture of the footwear to secure the various layers of material together. The layers of material held together by polymeric glue are capable of being heated to a degr

Multi-layer footwear formed of laminated layers of material which are sealed together with a polymeric glue used in the original manufacture of the footwear to secure the various layers of material together. The layers of material held together by polymeric glue are capable of being heated to a degree at which the footwear, when placed in a vacuum bag or compression chamber, is molded to adopt the shape of the foot inside the footwear under atmospheric pressure once pressure inside the bag is reduced or pressure in the compression chamber is increased. The footwear is heated to the point where the synthetic components of the layers of material are flexible under thermoforming conditions, but within a temperature range in which the polymeric glue continues to perform as an adhesive so that the sealed laminated surfaces do not separate. A polymeric glue is used because it can secure the laminated layers of material together during manufacture of the footwear and continue to perform as an adhesive during heating and cooling of the laminated layers of material in a custom-molded condition.

대표청구항 ▼

Remoldable multi-layer footwear capable of being molded on more than one occasion, said footwear comprising: a boot, said boot including a plurality of layers of material, said plurality of layers include natural and synthetic thermoplastic material of various segments, patterns and shapes located i

Remoldable multi-layer footwear capable of being molded on more than one occasion, said footwear comprising: a boot, said boot including a plurality of layers of material, said plurality of layers include natural and synthetic thermoplastic material of various segments, patterns and shapes located in different areas of said boot for varying flexibility at different areas of said boot, said plurality of layers being secured to each other by polymeric glue, said polymeric glue being capable of maintaining its adhesive effectiveness over repeated heating and cooling, said polymeric glue having a melting point higher than a softening temperature of synthetic components of said plurality of layers so that when said boot is heated and then molded by a pressure differential, said polymeric glue maintains its adhesive effectiveness to secure said layers of material together.