Composite body containers

Claim 1

A SEEPAGE-PROOF CONTAINER HAVING A TUBULAR BODY WALL FORMED OF A PLURALITY OF SPIRALLY WOUND LAYERS OF STIFF PAPER STOCK ADHESIVELY SECURED TOGETHER, (A) AN IMPERVIOUS LINING LAMINATE CONSISTING OF ALUMINUM FOIL BETWEEN 0.25 MIL AND 0.5 MIL THICH AND THIN BACKING PAPER LAMINATED TOGETHER AND A SLIP COATING OF VINYL RESIN CONTAINING WAX ON THE EXPOSED FACE OF THE FOIL, (B) SAID LAMINATE BEING SPIRALLY WOUND INTO TUBULAR FORM WITH A SPIRAL SEAM ALONG ITS LENGTH AND HAVING ITS FOIL SIDE FACING INWARDLY AND ITS BACKING PAPER SIDE ADHESIVELY SECURED TO THE INNER SIDE OF SAID BODY WALL AND BEING COEXTENSIVE IN LENGTH THERETO, (C) AN ALUMINUM FOIL TAPE HAVING A WIDTH OF BETWEEN ABOUT .375 INCH AND .625 INCH AND A THICKNESS OF BETWEEN ABOUT 1/2 MIL AND 1.5 MIL AND PROVIDED WITH A SLIP COATING ON ONE FACE AND A LOW TEMPERATURE HEAT-SEALABLE THERMOPLASTIC COATING ON ITS OPPOSITE FACE WHICH IS HEAT-SEALABLE TO SAID COATED METAL FOIL FACE OF SAID LINING LAMINATE AT A TEMPERATURE OF ABOUT 50*F. BELOW THE SOFTENING POINT OF SAID SLIP COATINGS, (D) SAID FOIL TAPE BEING DISPOSED IN SPANNING RELATION TO SAID SPIRAL SEAM CONTINUOUSLY ALONG THE LENGTH THEREOF WITH ITS HEAT-SEALABLE COATING IN CONTACT WITH AND HEAT-SEAL BONDED TO THE COATED FOIL FACE OF THE EDGE PORTIONS OF SAID LINING LAMINATE WHICH IT OVERLIES ALONG SAID SEAM, THEREBY COMPLETELY PREVENTING CAPILLARY SEEPAGE ACTION FROM THE INTERIOR OF THE CONTAINER INTO THE PAPER WALL THEREOF, (E) SAID SLIP COATINGS PERMITTING SAID TAPE AND SAID LINING LAMINATE TO SLIP RELATIVE TO A MANDREL AS A NORMAL INCIDENT TO FABRICATION OF THE TAPE SEALED TUBULAR LINER ASSEMBLY.