Method of making plastic tubes

Claim 1

A METHOD OF MAKING AN ORIENTED PLASTIC SHOT SHELL HULL TUBE COMPRISING: PROVIDING A CUP SHAPED TUBULAR BLANK OF LINEAR POLYOLEFIN PLASTIC HAVING AN OPEN END AND A SUBSTANTIALLY CLOSED END FOR FORMING AN INTEGRAL BASE WAD, PASSING A TAPERED MALE DIE INTO THE OPEN END OF SAID BLANK TO RADIALLY STRETCH SAID BLANK TO PRODUCE CIRCUMFERENTIAL ORIENTATION IN SAID PLASTIC, SAID MALE DIE STRETCHING SAID BLANK TO AN INNER DIAMETER LESS THAN THE ORIGINAL OUTER DIAMETER OF SAID BLANK, AND PASSING SAID BLANK AND MALE DIE THROUGH A FEMALE DIE TO LONGITUDINALLY STRETCH SAID BLANK TO PRODUCE LONGITUDINAL ORIENTATION IN SAID PLASTIC, SAID MALE AND FEMALE DIES LONGITUDINALLY STRETCHING SAID BLANK TO A UNIFORM OUTER DIAMETER ALONG ITS ENTIRE LENGTH AND TO AN INNER DIAMETER TAPERING OUTWARDLY TOWARD THE OPEN END OF SAID BLANK WHEREBY THE ORIENTATION OF SAID PLASTIC IS INCREASED AT SAID OPEN END.

Claim 2

A METHOD OF MAKING AN ORIENTED PLASTIC SHOT SHELL HULL TUBE COMPRISING: PROVIDING A CUP SHAPED TUBULAR BLANK OF LINEAR POLYOLEFIN PLASTIC HAVING AN OPEN END AND A SUBSTANTIALLY CLOSED END FOR FORMING AN INTEGRAL BASE WAD, PASSING A TAPERED MALE DIE INTO THE OPEN END OF SAID BLANK TO RADIALLY STRETCH SAID BLANK TO PRODUCE CIRCUMFERENTIAL ORIENTATION IN SAID PLASTIC, SAID MALE DIE STRETCHING SAID BLANK TO AN INNER DIAMETER LESS THAN THE ORIGINAL OUTER DIAMETER OF SAID BLANK, AND PASSING SAID BLANK AND MALE DIE THROUGH A FEMALE DIE TO LONGITUDINALLY STRETCH SAID BLANK TO PRODUCE LONGITUDINAL ORIENTATION IN SAID PLASTIC, SAID MALE AND FEMALE DIES LONGITUDINALLY STRETCHING SAID BLANK TO A UNIFORM OUTER DIAMETER ALONG ITS ENTIRE LENGTH AND TO AN INNER DIAMETER TAPERING OUTWARDLY TOWARD THE OPEN END OF SAID BLANK WHEREBY THE ORIENTATION OF SAID PLASTIC IS INCREASED AT SAID OPEN END.