Rotary applicator
View Patent ↗Induction heating of a pattern perforated rotating cylinder susceptor is utilized to melt and apply thermoplastic materials to a substrate.
1. A method of applying pelletized thermoplastic materials consisting of the following:
inducing current into a perforated steel cylinder susceptor containing pelletized thermoplastic materials to melt with a bar shaped induction heating coil;
positioning said induction heating coil in appropriate proximity to said perforated steel cylinder susceptor; and
contacting a moving substrate with said perforated steel cylinder susceptor to progressively apply a melted pelletized thermoplastic materials.
2. The method according to claim 1 , having a continuous of said moving substrate presented to a rotating surface of said perforated steel cylinder susceptor for a variable peripheral distance to control a time that the moving substrate is in contact with the melted pelletized thermoplastic materials.
3. A method of melting and applying pelletized thermoplastic materials consisting of the following:
rotating a pattern perforated steel susceptor containing pelletized thermoplastic materials;
inducing current into said pattern perforated steel cylinder susceptor to melt pelletized thermoplastic materials with a bar shaped induction heating coil;
positioning said bar shaped induction heating coil in appropriate proximity to said pattern perforated steel cylinder susceptor; and
contacting a substrate with said pattern perforated steel cylinder susceptor to progressively apply a melted pelletized thermoplastic materials.
4. The method according to claim 3 , that applies pressure with said pattern perforated steel cylinder susceptor for laminating a multi-layer substrate.
5. The method according to claim 3 , wherein a spring loaded pressure roll applies pressure to the substrate to assure full contact with said pattern perforated steel cylinder susceptor.
6. The method according to claim 3 , having the substrate contact said pattern perforated steel cylinder susceptor at a variable radial distance from said bar shaped induction heating coil to control a time that the substrate is in contact with the melted pelletized thermoplastic materials.