Product compositions for magnetic induction methods to treat and heatseal predetermined areas of parent units

Abstract

Abstract CERTAIN PRODUCT COMPOSITIONS FOR ASSOCIATION IN OR ATTACHMENT TO ONE OR MORE PARENT UNITS TO PRODUCE TREATMENT AND HEAT SEALING OF PREDETERMINED AREAS OF THE PARENT MEMBER OR MEMBERS. THE PRODUCT COMPOSITION IN ALL INSTANCES INCLUDE A STRATUM OF A HEAT-REACTIVE PLASTIC MATERIAL WHICH HAS SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN VERY FINE SUSCEPTOR PARTICLES SELECTED FROM THE CHEMICAL FAMILY OF MAGNETIC OXIDES. THESE PARTILCES ARE ELECTRICALLY NON-CONDUCTIVE AND ARE PREFERABLY EMPLOYED IN AN AVERAGE SIZE RANGE BETWEEN SUB-MICRON AND 20 MICRONS IN LONGEST DIMENSIONS, THE SAID STRATUM, SUBJECTED TO A SUITABLE MAGNETIC INDUCTION FIELD, BECOMING RAPIDLY HEATED TO TEMPERATURES FOR HEAT PROCESSING THE PLASTIC MATERIAL CONTIGUOUS TO THE PARTICLES. IN SOME INSTANCES THE SAID STRATUM CONSISTS IN A HEAT-FUSIBLE PLASTIC SURFACE OR PLASTIC UNIT WITH THE SUSCEPTOR PARTICLES DISPERSED RATHER DENSELY AND UNIFORMLY IN SAID SURFACE OR UNIT. IN OTHER INSTANCES THE STRATUM, WITH THE SUSCEPTOR PARTICLES EMBEDDED THEREIN OR CARRIED THEREBY, IS INDEPENDENTLY MANUFACTURED OR PRODUCTED AND SANDWICHED BETWEEN INTERFACING AN OPPOSED PORTIONS OF A PARENT UNIT OR SHEET OR SANDWICHED BETWEEN TWO PARENT MEMBERS OR UNITS. D R A W I N G

Inventors

• 👤 A James

Bibliographic Details