# US 5,794,842 A · Tubular packaging containers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,794,842 A - Document ID: US5794842A - Status: Granted - Kind: A - Application number: 08/542,681 - Filed: 1995-10-13 - Granted: 1998-08-18 - Earliest claimed: 1994-10-14 - Assignees: Concept Packaging Limited - Inventors: Derek Hallam - Web page: https://patentgrep.com/patent/US5794842A ## CPC - B65D 3/22: with double walls; with walls incorporating air-chambers; with walls made of laminated material {(for thermal insulating purposes B65D81/3818)} - Y10S 493/907: Lined - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ## Abstract A tubular packaging container includes a body (10) which includes a peripheral wall (34) defining top and bottom openings, at least one of which is closed by an end member. The body is formed from at least two panels (20, 30) of a suitable card material cut from flat stock. The panels are secured together in face-to-face relationship by adhesive (32) distributed across the mutually contacting faces thereof. The panels are then curved to the required shape to form a tube with marginal portions (31) of at least one of the panels secured together in overlapping relationship. ## Claims ### Claim 1 A tubular packaging container comprising a body which includes a peripheral wall defining top and bottom openings, at least one of which is suitable for closure by an end member, wherein the body is formed from at least two panels of a suitable card material cut from flat stock and shaped to form a tube with marginal portions of at least one of said panels secured together in overlapping relationship, said panels also being secured together in face-to-face relationship by adhesive distributed across the mutually contacting faces thereof, in which marginal portions of only the external panel are glued together adhesively in overlapping relationship to form the tubular body, whilst corresponding end edges of the internal panel are brought into abutting relationship to define the peripheral dimension of the tubular body. ### Claim 2 (depends on 1) A tubular packaging container according to claim 1, in which the body is formed from two such panels, which panels are formed by folding a single flat blank. ### Claim 3 (depends on 1) A tubular packaging container according to claim 1, in which one or more additional panels is or are sandwiched between the internal and external panels. ### Claim 4 (depends on 1) A tubular packaging container according to claim 1, in which the external panels is formed with a foldable auxiliary panel at the top edge thereof. ### Claim 5 (depends on 1) A tubular packaging container according to claim 1, in which the external panel is formed with a foldable auxiliary panel at the bottom edge thereof. ### Claim 6 (depends on 1) A tubular packaging container according to claim 1, in which the internal panel is formed with a foldable auxiliary panel at the top edge thereof. ### Claim 7 (depends on 1) A tubular packaging container according to claim 1, in which the internal panel is formed with a foldable auxiliary panel at the bottom edge thereof. ### Claim 8 (depends on 1) A tubular packaging container according to claim 1, in which the two panels of card material are curved to a predetermined shape to form the tube. ### Claim 9 A method of manufacturing the body of a tubular packaging container including the steps of cutting from substantially flat stock of a suitable card material at least two panels, adhesively securing the panels together in face-to-face relationship by means of adhesive distributed across the mutually contacting faces thereof, shaping said panels to a predetermined shape to form a tube, and securing together adhesively marginal portions of only the external panel in overlapping relationship to form the tubular body, whilst corresponding end edges of the internal panel are brought into abutting relationship to define the peripheral dimensions of the tubular body. ### Claim 10 (depends on 9) A method of manufacturing the body of a tubular packaging container according to claim 9 in which two of said panels are formed by folding a single flat blank into face-to-face relationship. ### Claim 11 (depends on 10) A method of manufacturing the body of a tubular packaging container according to claim 10, in which one or more additional panels are sandwiched between them. ### Claim 12 (depends on 9) A method of manufacturing the body of a tubular packaging container according to claim 9, in which there is a direction of grain of the card material and the panels are curved in a direction transverse to the direction of grain of the card material. ### Claim 13 (depends on 12) A method of manufacturing the body of a tubular packaging container according to claim 12, in which the adhesive is distributed substantially uniformly across the entire face-to-face contacting areas of the panels as a continuous adhesive layer. ### Claim 14 (depends on 12) A method of manufacturing the body of a tubular packaging container according to claim 12, in which the adhesive is distributed substantially uniformly across the entire face-to-face contacting areas of the panels as a discontinuous layer. ### Claim 15 (depends on 14) A method of manufacturing the body of a tubular packaging container according to claim 14, in which the card material has a grain direction and adhesive material extends continuously in a direction transverse to the grain direction of the card material. ### Claim 16 (depends on 9) A method of manufacturing the body of a tubular packaging container according to claim 9, further comprising the step of curving said panels to a predetermined shape to form the tube.