Polygonal paperboard drum

• US 4,166,567 A
• Filed: 11/04/1977
• Issued: 09/04/1979
• Est. Priority Date: 06/03/1976
• Status: Expired due to Term

• Current Assignee: International Paper Company
• Original Assignee: International Paper Company
• Inventors: Fuson, William R., Beach, Ralph L. Jr.
• Primary Examiner(s): Moy, Joseph Man-Fu
• Application Number:
  US05/848,619
• Time in Patent Office: 669 Days
• Field of Search: 229/41 C, 229/41 D, 229/14 BE, 229/14 BL, 229/14 BW, 229/45 R, 229/23 BT, 220/418, 220/408
• US Class Current: 229/108.1
• CPC Class Codes: B65D 5/18 by folding a single blank to U-shape to form the base of the container and opposite sides of the body portion, the remaining sides being formed primarily by extensions of one or more of these opposite sides, e.g. flaps hinged thereto B65D5/36 takes precedence
• CPC Class Codes: B65D 5/441 Reinforcements linings B65D5/56
• CPC Class Codes: B65D 5/56 Linings or internal coatings , e.g. pre-formed trays provided with a blow- or thermoformed layer to protect the articles from mechanical damage B65D81/127
• CPC Class Codes: B65D 5/64 Lids
• CPC Class Codes: B65D 77/02 Wrapped articles enclosed in rigid or semi-rigid containers

Abstract

A polygonal paperboard drum that is formed from: a one-piece, upstanding, generally tubular, reinforcing member having at least six, foldably connected, substantially rectangular, upstanding, reinforcing flaps; and a one-piece body member having two sets of at least three, substantially rectangular, foldably connected, upstanding, side wall panels and a polygonal bottom panel of at least four sides, formed from two foldably connected polygonal bottom flaps and connected along its opposite sides to the central side wall panel of each set of side wall panels; the sets of side wall panels being located on opposite sides of the tubular reinforcing member and the side wall panels being bonded to the reinforcing flaps; the upstanding lateral sides of the sets of side wall panels being in substantially abutting relationship about the foldable connection between reinforcing flaps; and the upstanding lateral sides of the reinforcing member being in substantially abutting relationship about the foldable connection between side wall panels.

Provided in the drum is a bottom insert having a central polygonal bottom reinforcing flap of at least four sides, overlying substantially the entire bottom panel and provided on each side with an upstanding flap.

The reinforcing member and the body member are adapted to form a collapsed drum envelope, from which an erect and stable, polygonal drum can be formed by providing the bottom reinforcing flap in overlying relationship to the bottom panel of the body member.

Claims

1. A polygonal paperboard container, which comprises:

a one-piece, upstanding, generally tubular, reinforcing member consisting of at least six, foldably connected, substantially rectangular, upstanding, reinforcing flaps, arranged in a row; and

a one-piece body member having two sets of at least three, substantially rectangular, foldably connected, upstanding side wall panels and a polygonal bottom panel of at least four sides, connected along its opposite sides to the central side wall panel of each set of side wall panels;

the sets of side wall panels being located on opposite sides of the tubular reinforcing member and the side wall panels being bonded to the reinforcing flaps;

the upstanding lateral sides of the sets of side wall panels being in substantially abutting relationship but not overlapping about the foldable connection between reinforcing flaps, and the upstanding lateral sides of the reinforcing member being in substantially abutting relationship but not overlapping about the foldable connection between side wall panels; and

a substantially rectangular, body flange being foldably connected to each side wall panel along one side of each set of side wall panels remote from the bottom panel; and

the lateral sides of the body flanges being connected by tabs, so that the lateral sides of the body flanges are connected until the container is to be closed.

2. The container of claim 1 wherein a polygonal top panel of at least four sides is provided at the top of the container and substantially rectangular, top flanges, foldably connected to the sides of the top panel, depend from the top panel and overlie the body flanges on the side wall panels.

3. The container of claim 2 wherein locking flaps are foldably connected to the top flanges, along the sides of the top flanges remote from the top panel, and the locking flaps are folded relative to the top flanges so that they are located between the side wall panels and the body flanges.

4. The container of claim 3 wherein the reinforcing member has only six reinforcing flaps and the body member has two sets of only three side wall panels;

wherein the bottom panel is hexagonal and a hexagonal bottom reinforcing flap, overlying substantially the entire bottom panel, and six upstanding bottom insert flaps, foldably connected to the sides of the bottom reinforcing flap, are provided in the container; and

wherein the top panel is hexagonal and six top flanges, each having a locking flap connected thereto, are provided in the container.

5. A generally flat, collapsed envelope for a polygonal paperboard container, which comprises:

a one-piece reinforcing member, consisting of at least six, foldably connected, substantially rectangular, reinforcing flaps, arranged in a row; and

a one-piece body member, formed by two sets of at least three, substantially rectangular, foldably connected, side wall panels, arranged in a row, and a polygonal bottom panel of at least four sides, formed from two foldably connected, polygonal, bottom flaps and foldably connected along its opposite sides to the central side wall panel of each set of side wall panels;

the lateral sides of the reinforcing member being in substantially abutting relationship but not overlapping;

one bottom flap of the bottom panel lying directly atop the other bottom flap of the bottom panel;

the sets of side wall panels being located on opposite sides of the reinforcing member, the side wall panels being bonded to the reinforcing flaps, and the lateral sides of one set of side wall panels being in close proximity to but not overlapping the lateral sides of the other set of side wall panels;

the abutting lateral sides of the reinforcing member being located inwardly adjacent to a fold line between adjacent side wall panels of the body member and the closely proximate lateral sides of the sets of side wall panels of the body member being located outwardly adjacent to fold lines between adjacent reinforcing flaps of the reinforcing member;

a substantially rectangular, body flange being foldably connected to each side wall panel along one side of each set of side wall panels remote from the bottom panel; and

the lateral sides of the body flanges being connected by tabs, so that the lateral sides of the body flanges are connected until the container is to be closed.

6. The collapsed envelope of claim 5 wherein the reinforcing member has only six reinforcing flaps and the body member has two sets of only three side wall panels.