Package making – Methods – Forming or partial forming a receptacle and subsequent filling
Patent
1982-01-29
1985-12-17
Sipos, John
Package making
Methods
Forming or partial forming a receptacle and subsequent filling
53469, 53570, 53568, 141114, 383 7, 383 22, 383 37, B65B 4326
Patent
active
045585563
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a continuous flexible belt which displays two opposing walls and longitudinal upper and lower edges and which incorporates a number of consecutively arranged packaging blanks, each with a bottom section at the aforementioned lower edge and two bonding zones arranged transversely in relation to the longitudinal direction of the belt which form the side closures of the packaging blank. The invention also relates to a method of filling and opening such packaging blanks.
PRIOR ART
British Pat. No. 1 509 639 describes a device for filling bag-shaped packagings of fabric material which are advanced by means of two drive belts in engagement with the outer sides of the packaging belt. The packagings are opened by means of a linkage mechanism and attendant interacting guide devices. The device is complicated and does not satisfy present-day demands for low costs of packaging different kinds of articles. In any event, the device is not suitable for filling bags of plastic material which are arranged in the form of a continuous belt.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a continuous belt of packaging blanks which permits the use of a simplified device for filling the packaging blanks in a simple and reliable manner, particularly packaging blanks of a plastic material.
This is achieved, according to the present invention, in that the continuous belt incorporates two principally opposing strip sections which extend in the longitudinal direction of the belt at its upper edge and which are demarcated from the packaging blanks by means of a tear initiation in each wall arranged parallel to the upper edge, whereby each strip section is provided with a continuous suspension device for cooperating with packaging blank opening guide devices arranged at a filling station for filling the packaging blanks, in addition to which the belt is provided with slots in both walls, each having a vertical slot arranged between the bonding zones of two adjacent packaging blanks and a horizontal slot formed in advance or in conjunction with the filling operation on either side of the vertical slot and between the packaging blanks and the suspension devices, whereby two adjacent horizontal slots are arranged at a distance from each other.
The simplified device according to the invention is characterized in that the guide devices consist of two adjacent guide bars arranged in the same place for coacting with the specified belt, whereby the guide bars display end sections which are situated in the vicinity of each other and center sections which are situated at a distance from each other, these center sections being arranged to separate the strip sections of the belt in conjunction with the opening of the packaging blanks, whereby the desired material or object is placed in the packaging blanks.
BRIEF DESCRIPTION OF THE VIEWS OF THE DRAWING
The invention is described in greater detail in the following with reference to the drawing, wherein,
FIG. 1 is a side view of a longitudinal cross-section of a continuous belt according to the present invention,
FIG. 2 shows the belt in FIG. 1 from above as it is advanced in a filling station,
FIG. 3 is a cross-section through the belt along line III--III in FIG. 4,
FIG. 4 shows schematically from above a device for handling a belt as in FIG. 1 from magazine to finished packagings,
FIG. 5 is a cross-section through a belt and guide devices according to another version of the invention,
FIG. 6 is a cross-section through a belt and guide devices according to a third version of the invention, and
FIG. 7 is a cross-section through a belt and guide devices according to a fourth version of the invention.
DETAILED DESCRIPTION
With reference to FIG. 1, a section of a continuous belt 1, which incorporates a number of consecutively arranged packaging blanks 2, is shown. The belt has been formed by folding a broader material belt along its center line 3 to form a bottom section 4 of the packaging blanks, the bott
REFERENCES:
patent: 3599388 (1971-08-01), Feingold
patent: 3779449 (1973-12-01), Membrino
patent: 3791573 (1974-02-01), Titchenal et al.
patent: 3817017 (1974-06-01), Titchenal
patent: 4291517 (1981-09-01), Lipes
patent: 4300608 (1981-11-01), Cuthbertson
Joker System Aktiebolag
Sipos John
Weihrouch Steven P.
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