Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1990-03-12
1991-10-01
Meislin, D. S.
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493102, 53452, 156217, B31B 184
Patent
active
050529943
ABSTRACT:
A method is described for sealing at least one end of a liquids package, in the form of a tube (1), a top having wall panels (9, 10) with an opening means (11) and a bottom (3,6) and at least some of the wall panels (9,10) of the top (8) consisting of synthetic plastics coated papers, cardboard or the like carrier material and which includes the steps of first laying flat an already formed tube (1), open at the top and bottom in a plane (22') so that at least the wall panel (10) for the opening means (11) is positioned in this plane (22'), and so that an anchoring device (15,17,18) for the handle (14,14') is positioned on a lateral edge of the laid-flat tube (1) and a handle (14,14') is injection molded onto the tube (1) so that the main plane (22') of the handle (14,14') lies in the same plane (22,22') as the laid-flat tube (1) so that the handle (14,14') is fixed in the region of the top (8) of the package and simultaneously the opening means (11) is injection molded into place, and then the tube (1) together with the opening device (11) is unfolded and its wall panels (9,10) are folded over through about 90 degrees into the plane of the top to produce a flat top (8) and synthetic plastics bridges (13) are injection molded between the thus disposed wall panels (9,10). An apparatus to accomplish this method is described and comprises an injection mold die and a counter mold die which are driven so that they move towards each other. Each die is in one piece and has recesses for the synthetic plastic bridges, opening device or handle on that surface which is towards the other die.
REFERENCES:
patent: 4347211 (1982-08-01), Bandoh
patent: 4604850 (1986-08-01), Reil
patent: 4781012 (1986-11-01), Reil et al.
patent: 4834823 (1989-05-01), Reil
patent: 4844327 (1989-07-01), Pausing
Meislin D. S.
Tetra Pak Holdings & Finance
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