DE8420683U1 - Falzbodensack with staggered closure flap - Google Patents

Description

POSTAL CHECK ACCOUNT: HAN 3091 93-3Ο2 LEGAL FILES: 13 DATE: _{9m July}

Applicant: Wilhelmstal-Werke GmbH ₇ Fautenbacherstraße 26, 7590 Achern

Folded bottom sack with staggered locking flap

The innovation relates to a folded bottom sack, in particular a multi-layered one Folded bottom sack with staggered closure flap, which in the closed state of the folded bottom sack by one square Fold line running in the longitudinal direction of the bag folded over and glued to the outside of the opposite outer paper layer is.

In known folded bottom bags of this type, the staggered closure flap is folded over after filling. this Although it has the advantage that the sack can be opened completely for filling, that is, a large filling opening is available. On the other hand, the large filling opening has the disadvantage that the seal between the filler neck and an open folded bottom bag causes difficulties during filling.

The innovation is based on the task of designing a folded bottom sack of the type assumed to be known in such a way that he a simple and safe sealing of the filler neck allowed during the filling process.

13 579

July 9, 1984

According to the present day, this problem is solved by that the closure flap has a central area separated by two side areas, the side of which is The separating edges extend to the fold line.

The provision of a central, separate area has the advantage that first of all the two lateral closure tab areas can be glued before filling the partially closed paper sack and that the prepared Paper sack with the middle open area over the filler neck can be pushed. A comparatively simple seal in the middle area is here with the aid of appropriately shaped clamping jaws possible. After filling, it is sufficient to place the middle area in the facsimile line fold down and close in the usual way.

In a preferred embodiment of the innovation are Separating cut edges of the inner paper ply opposite those of the outer paper ply to the center of the middle area staggered. This leads to a particularly secure and permanent connection of the central tab area with the underlying paper areas.

Finally, it is proposed according to the innovation that below the middle area of the closure flap is a hot melt adhesive layer is provided between the paper layers lying on top of one another in the closed state. Such Hot glue layer allows activation by heat after filling.

The following is a preferred embodiment of the innovation described in detail with reference to the drawing. Show it:

Figure 1 -

a side view of the paper sack according to the innovation in the filling station /

- 3 -

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July 9, 1984

Figure 2 Figure 3 -

Figure 4 -

a Scheiriatische plan view in the direction of the arrow II in Figure 1,

the folded bottom sack with a still completely unlocked closure flap and a closed one Locking tab,

the folded bottom sack according to Figure 3, in which the lateral locking tabs are closed / however, the middle one is still open.

The folded bottom sack has a lower folded flap 7 that is already closed. The side folds are denoted by 6. the The upper closure flap is divided into two lateral areas 1 and 2 and a central area 3. The upper locking flap, consisting of the areas 1, 2 and 3 is folded over around the fold line 11 to close.

In the illustrated Ausführungsungsbexspxel is a two-layer Paper sack shown. The side area 1 is separated from the middle area 3 by means of the cut edges 4b (outer paper layer) and 5b (inner paper layer) separately. The side area 2 is separated from the central area 3 by means of the separating cut edges 4c (outer paper layer) and 5c (inner paper layer) separated. The outer cardboard layer has a total of 4, the inner one with 5 designated.

After the paper sack has been filled through the filler neck 8, the middle area 3 is folded over along the fold line 11 and closed with the help of the hot glue areas 12, which are activated beforehand.

When filling, the sealing of the filler neck 8 takes place opposite the paper sack using the two clamping devices or sealing devices 9 and 10, which grip the paper sack and the filling spout 8 in a clamping manner between them.

Claims (3)

1. Folded bottom sack / in particular multi-layered rebated floor sack with staggered closure flap, which in the closed state of the folded bottom sack around a transverse to the sack longitudinal direction The fold line is folded over and glued to the outside of the opposite outer paper layer, characterized, that the closure flap (1, 2, 3) has a central area (3) separated from two lateral areas (1 and 2), its lateral separating cut edges C4b; 5b; 4c; 5c) to the Falzlinxa (11). 2. Folded bottom bag according to claim 1, characterized in that that the separating cut edges (5b and 5c) of the inner paper layer (5) opposite those (4b and 4c) of the outer paper layer (4) are offset to the center of the central area (3). 3. Folded bottom bag according to claim 1 or 2, characterized in that that below the middle area C3) of the closure flap a layer of hot glue (12) between the folded over state superimposed paper layers is provided.