Process for producing wound capacitors having a biaxially oriented, thermoplastic, dielectric medium between alternate electrodes

Claim 1

A PROCESS FOR PRODUCING CAPACITORS WHEREIN WOUND LAYERS OF BIAXIALLY ORIENTED, THERMOPLASTIC, DIELECTRIC MATERIAL ARE HEATED TO SHRINK THEM INTO AN INTIMATE PHYSICAL BONDING RELATIONSHIP WITH ALTERNATE LAYERS OF AN ELECTRODE MATERIAL THEREBY TO FORM AN ELECTRICALLY STABLE CAPACITOR OF DESIRED FINAL CAPACITANCE VALUE, WHICH COMPRISES THE STEPS OF: MEASURING THE THICKNESS AND THE RELIEVING FORCE CHARACTERISTICS OF A HOMOGENEOUS UNIT OF THE BIAXIALLY ORIENTED MATERIAL; CLASSIFYING THE UNIT OF MATERIAL ACCORDING TO ITS TWO MEASUREMENTS INTO AN INDIVIDUAL ONE OF A PLURALITY OF CLASSIFICATION GROUPS; WINDING ALTERNATE LAYERS OF THE BIAXIALLY ORIENTED MATERIAL AND THE ELECTRODE MATERIAL TO FORM A CAPACITOR HAVING AN INITIAL CAPACITANCE VALUE BEARING A RELATIONSHIP TO THE FINAL DESIRED CAPACITANCE VALUE PREDICATED UPON THE INDIVIDUAL CLASSIFICATION GROUP INTO WHICH THE MATERIAL FALLS; AND SUBJECTING THE WOUND CAPACITOR TO HEAT TREATMENT TO EFFECT A SUBSTANTIALLY COMPLETE CURE OF THE DIELECTRIC MATERIAL AND A SHRINKING OF THE MATERIAL INTO AN INTIMATE PHYSICAL BONDING RELATIONSHIP WITH THE ELECTRODE MATERIAL, THE CAPACITANCE OF THE CAPACITOR REACHING A PREDETERMINED PERCENTAGE OF THE FINAL VALUE DESIRED AT THE END OF THE HEAT TREATMENT SUCH THAT A SUBSEQUENT COOLING OF THE CAPACITOR RESULTS IN THE PRODUCTION OF AN ELECTRICALLY STABLE CAPACITOR OF DESIRED FINAL CAPACITANCE VALUE.