DE1411538C3 - Glued cross-bottom valve bag made of several paper or similar layers - Google Patents

Description

3 4

tet. - When pulling up the cross bottom in the form wider than that of the edge sections 52 according to the A b b. 2, the pike-edged verlau- situation arise 2 limited edges of the bag layer 2. The v Kanfenden folding edges, V. tenabschnitten 43, 44 of the left bag layer end ent-The production of the individual layers of bags 1, 2, 3, 4, 5 speak the edge portions 43 a, 44 α of the end of the layer shown in the known manner by pre-cutting and 5 Fig. 1 on the right, thus tearing off continuous webs, whereby a bar as the edge sections 33, 34 the edge flattening of the cut edges of the five bag layers counter-cuts 33 α, 34 α correspond to each other. That in the A b b. 1 left dar- The outermost sack layer 5 finally reached at the left end of the sack layers 1 to 5 results in the lower end of the sack in its two lateral end sections ren bottom of the sack, which does not contain a valve. That in io 35 the distance ft from the folding edge x, x, occurs the A b b. 1 end reproduced on the right results in both sides of the folded edges u, u of the same base with the bag base carrying the valve. the edge sections 45, which are shorter than the second, because the separation of the sack layers from the corresponding transverse edges 42, which is located between the inclined fold edges v, V of the same corresponding webs without generating waste, is shown in Fig. 1 15 innermost sack layer 2 back to the right, in the section 55 delimited by the clear sack layer end the same cut edges edge sections 45 as the end shown on the left, with further, up to the distance α from the fold-over edge x, x, graduation of the Sack layers to step back on one of the sack layers.

end a corresponding graduation in reverse. At the right end of the bag in Fig. 1, the sequence at the other end of the bag layer is shown. so that edge sections 35 α can be recognized which correspond to the edge sections 35 of the left end of the bag, also the longitudinal edges of the sack layers 11 to 15 and 21, to 25 are staggered in a known manner in order to prevent the longitudinal glued seams of the sack layers from being offset while the edge sections 45 α - Cut 45 and the edge portion 55 α the discharge. For gluing these longitudinal glued seams, section 55 is the same.

the longitudinal edges of the sack layers 11 to 15 with the usual 25 At the end of the layer, which will later be the valveless one

iron paper sack glue coated as this is formed by the sack bottom, d. H. on the one in the A b b. 1 left

Dotting in the A b b. 1 is indicated. End of the bag, have layers 2, 3, 4 and 5 on the

The transverse edge 31 of the innermost sack layer 1 is a transition point between its edge sections

(Fig. 1 left half) for the most part runs a par-adjacent, stepped edge section

allele at a distance α to the later folding edge χ, χ 3 ° incision, which runs in the longitudinal direction of the sack layers

the cross bottom flaps; only the section with which runs up to the inclined folding edges v, v ' .

Transverse edge 41 between the folded edges u, u has the So the outermost bag layer 5 between the

Significantly greater distance b from the Umlegekan- edge sections 35 and the edge sections 45

te χ, χ on. The transverse edge 41 here has a slightly shorter incision 105. The sack layers 3 and 4 ha

than the width of the bottom flap 55 of the outermost 35 ben at the corresponding section ends a

Sack layer 5, which has cuts 103 and 113 up to the two folded edges v '. The second innermost layer 2 has

Soil is enough. at her in the A b b. 1 end shown on the left

The transverse edge 41 has incisions 102,112 at one end of the sack layer.

corresponds to a transverse edge 41 α on the other - in the corresponding incisions the edge

A b b. 1 right - end of the bag layer. The transverse edges 40 cuts in the A b b. 1 right end of the bag layer

31 of the one (left) end of the bag layer corresponding to.

Transverse edges 31a on the other (right) sack layer - At both ends of the sack layer is the innermost sack end, leave layer 1 without such incisions.

The cross-sectional edge of the second innermost sack- The A b b. 2 shows that the layer 2 described results in its central part in the 45 staggered transverse separation of the individual bag layers 1 A b b. 1, the end of the layer shown on the left, the section up to 5 of their webs. Bottom flaps are created with the transverse edge 32 at a somewhat smaller distance, the longitudinal and transverse edges of which are so gestafals b from the folding edge x, x; on the other hand, it is in the meantime that on the innermost layer 1 on each of the inclined folding edges v, v 'of each corner and two sack bottoms, a short plastic adhesive wrap is to be applied to the transverse edges 42 at a distance b and at the seam e . Paper glue can be used at all other adhesive points at the beginning and end of the cross-sectional edge of the sack. The fold-over edge x, x extends on sections 52 at a somewhat greater distance than α from the entire paper sack according to the invention. So the total length of the plastic adhesive seam of the transverse edge 32 of one end of the bag bottom corresponds to 2 e, where the length of the plastic adhesive speaks the transverse edge 32 α of the other, in the 55 seam e of a bottom to the distance between the two Fig. 1 right The end of the bag bottom, with the largest transverse corners of the bag bottom edge 42 α from one another, the transverse edges 42 and the edges being limited.

cuts 52 α correspond to the edge portions 52 In the example of the upper sack bottom in the A b b. 2

chen. the innermost sack layer 1 forms the largest corner

The transverse edges 33 and 34 of the next two 6 ° strike with those closest to one another

Sack layers 3 and 4 almost coincide and lie transverse edges 31 a, while the lower sack floor

almost in its entire length between the distances α the second innermost layer 2 the largest corner

and b away from the fold-over edge χ, χ; only on the beat with the transverse edges 42 forms.

Height of the edge sections 52 of the second innermost The plastic adhesive seam e of the in the A b b. 2 un-

They form the sack layer 2 on the one (left) layer - the lower bottom can be omitted. For this

at the end of the protruding edge sections 43, 44, two seams e 'are provided which form the longitudinal

dic, however, do not reach the distance ft. The edges 101 of a sheet or slip of paper 100 with the in-

through formed edges 53, 54 are somewhat nersteh layer 1 connect. The sheet 100 protrudes in its

ner longitudinal direction a little over the transverse edges 42 to the outside and is placed with its transverse edges on the strips of glue 42 b of the second innermost sack layer 2. The corner fold edges of the three outermost bag layers 3, 4 and 5 are not touched by the filling material because of the presence of the sheet 100.

In the upper bottom of the bag, before the bottom flaps h and k are closed, the valve hose 61 is inserted through which the bag is filled in a known manner.

If the inner bottom flaps h are first folded around the corresponding fold-over edge *, χ when the bag bottoms are closed, their lateral ends stick to the corner notches of the sack or to the valve tube that has already been glued to the corresponding corner notch of the sack by means of their application of glue would. When the two outer bottom flaps k are turned over, the plastic-coated adhesive ao seam e on the inside of the innermost layer 1 sticks to the outside of the bottom flap h (if no insert 100 is used), and the glued areas of the bottom flaps k lie on top of the corresponding parts of the bottom flaps h.

If a sheet 100 is inserted, the bottom flaps h, k of the upper base are closed in the manner described, while in the case of the lower base, the interior of the bag has already been closed by the sheet 100 and therefore only the three outermost layers 3, 4 and 5 are glued on the bottom flaps h and k is necessary. In cases in which an extremely high level of sealing is to be achieved, the adhesive seam e can also be used in addition to the sheet 100 .

As can be seen from the drawing, it is not the corner folds of the innermost sack layer 1 on the one hand and those of the outermost sack layer 5 on the other sack floor that lie closest to each other on the two sack bottoms, i.e. form the boundary of the adhesive seam e, but the corner folds of the innermost sack layer 1 have on one side and those of the second innermost bag layer 2 have the smallest distance from one another on the other bag bottom.

1 sheet of drawings

Claims (1)

1 2 The object on which the invention is based is patent claim: is the two corner units on a sack bottom flapping transverse edges of a sack layer and on the two Glued cross-bottom valve sack from several th sack bottoms, the corner transverse edges of one Paper or the like layers, of which the 5 further sack layers are as close as possible to one another on the inside the. innermost layer a plastic ren, so that the plastic adhesive seam of each sack layer and whose one sack bottom is shorter than with valve sacks known up to now ends positive and whose ends become second. This not only means savings in teu bag bottom forming ends negatively staggered rem plastic adhesive, but also diminishes the are, with sack layers at their cross-sectional canio danger that in the touch of a highly sensitive have some incisions that extend up to the contents of the sack with adhesive seams, Folded edges formed when pulling up the floors. To achieve this object, the invention provides - Sufficient, the plastic layer of a glued cross-bottom valve bag of the described innermost layer on each bottom with the corresponding type that the innermost bag layer is connected to its corresponding opposite surface by plastic adhesive 15 one end in the longitudinal center of the longitudinal edges of the seams , which only between the folding edges in the sack forms a section projecting opposite the distance opposite corner staggering with a cross-cut transverse edge on the plastic edge, the other layer at the other end of the layer with a layer lying opposite the innermost layer due to the staggering recessed Section with stretch, characterized in that 20 corresponds to a transverse edge that the second innermost the innermost sack layer (1) at its one end in the sack position at its one end between the corner longitudinal center of the longitudinal edges of the sack resulting for the cross bottom sloping folding edges (u, u) e Inen against the staf folding edges against the graduation protruding feiung protruding section with a transverse sections with transverse edges and that the transverse edge (41) forms, at the other end of the layer an edge of the second innermost sack layer between these against the graduation recessed sections behind the transverse edge of the innermost sack section with a transverse edge (41 a) corresponds to that layer receding, while at the other end of the layer the second innermost sack layer (2) at one of its protruding sections with the transverse edges of the end between the corner folds for the second innermost sack layer against the staggering Inclined folding edges 30 resulting in cross-bottom recessed sections with transverse edges corresponding (v, v) against the staggering protruding notches, and the transverse edge of the second innermost sack layer cuts with transverse edges (42) and that between these sections over the transverse edge of the transverse edge (32) of the second innermost sack layer (2 ) innermost sack layer protrudes. between these sections behind the transverse edge The invention is thus based on the idea (41) of the innermost sack layer (1) withdraws, while in departure from what was previously known, the inner rend at the other end of the layer does not have the most protruding and the outermost sack layer to form the largest sections with the transverse edges (42) of the second and lowest it is envisaged to smallest corner tucks, nermost bag layer (2) inflow against the staggered but $ it innermost and second innermost or recessed portions with transverse edges (42 d) to use other inner bag layer to the größentsprechen, and the transverse edge (32 d) of the second- 40th and the smallest corner impacts. The innermost sack layer (2) between these sections succeeds without an additional abutment over the transverse edge (41 ä) of the innermost sack cover slip, on the finished sack bottom the corner insert (1) protrudes. beat the innermost and the second innermost or to let one of the other inner sack layers jump back so far that when the side flaps are turned over side flap sections that are still overlapping but not non-overlapping at the corners, d. H. none. Holes arise. Due to the strong protrusion of the corner posts The invention relates to a glued cross base 50 the sack layers in question succeed in the Verden valve sack from several paper or the like shortening the plastic adhesive seam between the -layers, of which the inner side of the innermost layer corner impacts of a floor in an optimal way carries a layer of plastic and reaches the one. The ends forming the bag bottom are positive and their den In the drawing, a natural The second ends forming the bottom of the sack are negatively drawn to scale are, with sack layers at their cross-sectional example of a cross-bottom valve sack according to the harvest have some incisions that go up to the one shown in the discovery, namely shows the Raising the bottoms formed folding edges are enough, A b b. 1 the two ends of the five-way railway wherein furthermore the plastic layer of the innermost layer NEN formed sack blanks and the on each floor with the corresponding counter surface 60 A b b. 2 through the sack with raised cross arches Plastic adhesive seams connected to the. The sack shown in the drawing exists only between the spaced-apart sacks Overlying corner transverse edges of each of five sack layers 1, 2, 3, 4, 5. The lowest sack layer 1 lying on the plastic layer of the inner layer in Fig. 1, which extend according to the common case. 65 th of the sack layers around the two folded edges u, u, By the Austrian patent 194 237 d. H. around the later longitudinal edges of the sack, the in- (F i g. 5) is a glued Kicuz bottom valve sack that forms the first sack wall, is on it in the drawing Kind known. the side that is not visible is coated with plastic.