FI70689C - FOERPACKNING AVSEDD FOER VAETSKA OCH FOERFARANDE OCH ANORDNINGFOER DESS FYLLNING - Google Patents

Description

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Packaging for liquids and the method and apparatus for filling it. - Förpackning avsedd för vätska ooh förfarande och anordning för dess fylLning.

The invention relates to a package for hoists consisting of opposed films which are sealed to each other in the vicinity of their edges and which have tubular projections to form a filling and emptying hose. Such packages are used in restaurants for dispensing milk and other liquids. The packages are relatively large, usually several tens of liters.

The invention also relates to a method and a device for filling a package.

The problem is connecting the package to the nozzle of the filling device for quick filling. If a separate, rigid filling hose is used in connection with the package, it substantially increases the cost of the package, complicates its handling, and the rigid filling hose cannot be dimensioned so large in diameter that filling can take place quickly.

The object of the invention is to provide a combination of a package and a filling valve structure which enables the package to be connected to the filling valve quickly and reliably, by means of which the package can be filled quickly, while keeping the cost of the package itself as low as possible.

These objects are achieved by the invention on the basis of the features set out in the appended claims.

In the following, an embodiment of the invention will be described with reference to the accompanying drawings, in which Fig. 1 shows a filling nozzle with a slit.

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Figure 2 shows an uncut side projection of Figure 1.

Figure 3 shows a filling nozzle into which a large package filling hose is threaded for filling a packaging bag.

Fig. 4 shows a filling hose made of the same plastic film as the packaging bag, and Fig. 5 shows a packaging bag made of plastic film, which after filling is placed in a cardboard box during transport and use.

First, the structure of the packaging bag according to Fig. 5 will be described. The packaging bag is made in two layers so that the inner layer consists of a hose-like part, the edges of which have been marked with the reference number 12, and the outer layer consists of films placed on both sides of the hose, the edges of which are heat-sealed. The seams are denoted by reference numerals 9, 10 and 11. The seams 9 and 11 also close the ends of the tubular inner part. Protruding strips are made in the film material of the package, which are formed by means of seams 8 and 9 as a filling hose 6 and a drain hose 7. The drain hose 7 is initially closed and is opened by cutting the end of the hose across the desired point. The drain hose 7 has holes 14 outside the seam 9 for attaching the drain hose to the valve mechanism of the drain device.

The filling hose 6 is formed by means of the seams 8 and 9 so that wide edge strips 13 remain outside the seams.

These edge strips 13 can be utilized when inserting the filling hose 6 into the filling nozzle, which will be described below with reference to Figures 1 and 2.

The filling nozzle 1 consists of a nozzle tube surrounded at the end of the annular clearance 5 by a jacket 3 with axial slits 3a which open at the free skirt side end of the jacket 3. Inside the nozzle gap 5, the nozzle 1 has a flexible

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3 70689 va membrane 2, inside which a compressed air duct 4 opens.

The membrane 2 can be inflated by means of compressed air against the inner surface of the jacket 3.

The filling nozzle and the filling hose work together as follows. For filling, the filling hose 6 of the packaging bag is inserted, holding the flanges 13 outside the sealing, below the nozzle 1. The tubular part 6 is opened and threaded into the nozzle 1 so that the slits 3a of the jacket part 3 hit the flanges 13 and the flanges are pulled all the way to the bottom of the slits 3a. Compressed air is then released through the duct 4, whereby e.g. a flexible membrane 2 of rubber presses against the inner walls of the jacket 3 and the filling hose 6 is pressed between the membrane 2 and the jacket 3, where it is held during filling by compressed air. The filling hose 6 is dimensioned such that, in the shape of a circle, its diameter is almost the same as the diameter of the tubular lower part of the nozzle 1 into which it is threaded. The filling hose 6 is then stretched as the membrane 2 presses against the jacket 3. It remains important for the filling hose 6 to be stretched because the necessary tightness is also achieved at the seams 8 and 9 as well. However, the filling hose 6 must not be so tight that it can easily fit on the tubular part of the nozzle 1.

In the case of the filling hose 6, it is important that it has flanges 13 wide enough that the filling hose can be lifted around the nozzle with your fingers. The nozzle and the bag are thus inextricably linked in terms of their structure, dimensions and function.

The packaging bag can also be made into three layers by seaming in the same way.

Claims (8)

1. A liquid-intended package, consisting of facing sheets placed adjacent each other and having hose-like projections for forming a filling and emptying hose, characterized in that the filling hose (6) and the discharge hose (7) are both made of the same foil material as the packaging in the form of tabs projecting from the packaging foil material and the hose-like parts formed by the projections are delimited by joints (8, 9) made at such a distance from the projecting foil tabs. lateral edges, that wide edge strips (13) are formed beyond the joints, which can be gripped with fingers to push the filling hose into a filling nozzle. Packaging according to claim 1, characterized in that the width of the edge strips (13) of the filling hose (6) is over 2 cm, most preferably about 3 cm. Packaging according to claim 1 or 2, characterized in that the one side edge of the filling hose (6) continues to seal continuously (9) over one side edge of the package and along both side edges of the discharge hose (7). Method of filling the package according to claim 1, characterized in that the filling hose (6) is slid the filling nozzle (1) while the edge strips (13) are fitted in the axially directed grooves (3a) of the envelope (3) and a nozzle (3a). existing elastic diaphragm (2) remaining inside the filling hose or corresponding movable member is inflated with the aid of pressure such that the filling hose (6) is pressed between the diaphragms (2) and manifold (3). Apparatus for carrying out the method according to claim 4, which means for a filling nozzle (1) and