B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
229/42
B29C 65/00 (2006.01) B31B 7/00 (2006.01) B31B 17/00 (2006.01) B65D 5/42 (2006.01) B65D 5/62 (2006.01)
Patent
CA 1247067
ABSTRACT This invention relates to containers and methods of, and apparatus for, manufacturing containers. A container in accordance with the invention includes four walls (202-205, Figure 1, or 301-303 and 305, Figure 4), and a base (201, Figure 1, or 306, Figure 4). The base is constituted by two flaps (206 and 207 or 307 and 308) arranged so that they can be moved between a first position in which the container can be folded flat, and a second position in which they hold the four walls in a generally rectangular formation. The container may be manufactured by sealing six boards (4, 5 and 6) between two webs of PVC material drawn from supply rolls (50 and 51). The sealing is carried out by means of a welding process which also forms the boards (4 and 5) into hinged pairs. In further welding processes, boards (6) are hingedly connected to the boards (4 and 5). Finally, two pairs of boards (4 and 5) are hingedly connected together to form the four walls of the container. In the welding process, a raised portion (123, Figure 22) is formed to hold one of the two flaps (6) in its second position.
458922
Marshall Cavendish Services Limited
Moffat & Co.
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