Manufacturing container or tube from paper; or other manufacturi – Container making – Rigid container
Patent
1996-03-28
1998-03-24
Shoap, Allan N.
Manufacturing container or tube from paper; or other manufacturi
Container making
Rigid container
493210, 220613, 220680, B31B 164, B31B 190, D65D 822
Patent
active
057306940
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a container of thermoplastic material and a process for the production thereof.
A container of that kind is to be found for example in EP-A-483 976. The screw closure plastic bottle described therein has a handle and is produced from a tubular element by a blow molding process. The thickness of the central wall portion is about one third to one quarter of the thickness of the bottom and the cover portion.
If the container is to be provided with labelling or marking, a label is applied to the container or is introduced into the blow molding mold.
EP-A-126 575 shows a screw closure plastic bottle which is composed of a bottom, a peripheral portion and a cap, and whose peripheral portion represents an extruded and in particular multi-layer tube portion to which the bottom and the cap are latched and then welded. The problem of labelling or marking is not solved thereby.
The object of the present invention is to provide a container whose central wall portion can be directly printed upon so that there is no need to apply labels.
In accordance with the invention that object is attained in that the wall portion comprises a film welded along a longitudinal seam, and is welded to the bottom and to the cover portion. Producing the central region of the container from a flat film makes it possible to apply printing to the major part of the film in any manner, as the subsequent container production procedure only involves processing the film at the edges thereof but not at the printed region thereof. Both the operation of welding the longitudinal seam and also the operation of welding to the bottom and the cover portion require only heating a narrow strip in each case.
A preferred embodiment provides that the bottom and the cover portion each have a flange to which the wall portion is welded.
The flange is arranged in each case at the same side, namely at the inside of the container in the case of the cover portion and at the outside in the case of the bottom. The similar configuration involved makes it possible for the cover portion and the bottom to be successively connected to the wall portion by means of a single transverse welding device.
For use of the container as a refill pack in soap dispensers or the like, it is further provided that the cover portion has a container neck with a push-on guide means, open at least towards one side, for a sliding closure. In that way the container can be inserted into the dispenser from the side.
A preferred process for the production of containers according to the invention provides that a flat film, in particular with printing thereon, is closed to form a tubular portion and welded along the two longitudinal edges, that a cover portion and a bottom are introduced alternately into the closing tubular portion and respectively welded in the already closed region to the tubular portion, and that then each container is cut off. In that procedure the flat film is fed by way of a mold shoulder and corresponding guide elements to a thin-wall tube which forms a core and which serves as a co-operating holder for the welding device which produces the longitudinal seam and which acts from the outside. As preferably each container is produced in advance with the cover portion, a first cover portion is fed through the core tube from a magazine, the closable opening of the cover portion facing in the feed direction, so that the feed tool which preferably at the same time forms an internal cooperating holder for the transverse seam welding operation can engage within the flange of the cover portion. After the dover portion has been pushed through the core tube, the cover portion is welded to the tubular portion for forming the container. The forward feed movement of the tubular portion for forming the container and the longitudinal welding operation are continued and the co-operating holder is retracted from the cover portion through the core tube again. The forward feed length of the tube portion for the container, as it is being formed, which length determines the f
REFERENCES:
patent: 988116 (1911-03-01), Lee et al.
patent: 1156619 (1915-10-01), Neel
patent: 2039255 (1936-04-01), Marland
patent: 2194451 (1940-03-01), Soubier
patent: 2584095 (1952-01-01), Slaughter
patent: 3434627 (1969-03-01), Tebbutt
patent: 3606726 (1971-09-01), Spertus et al.
patent: 3874558 (1975-04-01), Rockefeller
patent: 4021342 (1977-05-01), Schacht et al.
patent: 4060179 (1977-11-01), McGhie
patent: 4356926 (1982-11-01), Priestly et al.
patent: 5027963 (1991-07-01), Robbins, III
Hagleitner Betriebshygiene Gesellschaft m.b.H. & Co. KG
Kopsidas Niki M.
Shoap Allan N.
LandOfFree
Container of thermoplastic material and process for the producti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Container of thermoplastic material and process for the producti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Container of thermoplastic material and process for the producti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2284982