DE1301040B - Process for the production of rectangular or rhombic double packaging units from plastic film - Google Patents

Description

The invention relates to a method for having and laterally offset from one another Manufacture of rectangular or approximately rhombic center lines are moved forward intermittently. Double packaging units made of plastic film. Ko- The perforation welds can be perpendicular

niche bags and sleeves are made of plastic film and the separating welds are inclined to the length of the web various purposes of interest. In this way, the direction will be attached, or vice versa, the way of playing conical bags for flowers, inclined rainforation welding seams and the separating welding screens, Ties, etc. used, while tapered seams are vertical. Furthermore, the two tracks Sleeves that are open on both sides, for example to be integrally connected at their longitudinal edges, and Flowers in pots and for dust protection for webs - it can occur during a standstill of the webs find use of yarns. io the attachment of the separating welds in width

The known conical bags and sleeves are abden corresponding to a double packaging unit either manually welded or mechanically in stands on the respective broad side of a single spoiler Made in a way that along the alternate packing unit the integral connection between the right and left angled side seams of the two panels on the there is a tear-off perforation which can be re-attached to the longitudinal edges. To this The method according to the invention can also be rolled up in the conical manner that is contiguous without waste welded parts permitted. In many cases when tubular film sheets are used, However, there is a need to provide such bags and sleeves.

sen not having to tear off a supply roll. Exercise on the basis of the drawings in several Aus-Man I would prefer to receive this, as is also explained by way of example in the case of rectangular guide shapes. It shows bags is common, delivered stacked. The well-known Fig. 1, 2 and 2a each have a pair of conical sleeves

th conical pouches and sleeves would not be made from two ends with open ends be easily stackable because they are flat strips with waste-free production;

alternating with the wide opening on the right Fig. 3 and 4 a pair of conical bags each,

and come to rest on the left side. 25 made up of two flat tracks;

The invention is now based on the object of a F i g. 5 and 6 a pair of conical bags each, manufactured

Process for the machine production of conical forms from a tubular film web, To convey bags that are easy to stack. F i g. 7 and 8 each have a pair of tapered sleeves

To solve this problem, inventions with curved side edges are made from according to the proposal, rectangular or rhombic 30 two flat tracks,

bische double packaging units made of plastic- F i g. Fig. 9 is a top view of a film through machine to produce the result of the tear-off perforation of the method according to the invention for Hermit each other connected conical individual adjustment of the bag or tube packaging units according to the invention consist of two matched pairs.

flat film webs lying on the other side intermittently in front of 35 Each pair of bags or sleeves according to FIG. 1 to 8 are moved, while the tracks are at a standstill, one perforation weld seam 1 turns into two one-perforation weld seams and during an individual bag or sleeve 2 and 3 can be dismantled. To the right The following standstill of the webs separating weld and to the left of the perforation line 4 of the perforation seams, each in the width of a double packaging weld seam 1, the welds 5 and 6 of the unit corresponding distances in the webs 40 formation of a side seam of the bags or sleeves 2 are created and the separating welds are pointed and 3. The other side seam is each through a at an angle to the perforation weld seams caused by separating welding welds such that they are formed at the point of intersection with the seam 7 and 8, respectively. The bag or sleeve pairs Longitudinal center lines of the tracks approximately midway between FIGS. 1, 3 and 5 have rhombic and the adjacent perforation welds. 45 according to FIG. 7 essentially rhombic shape, Since only every second seam is designed as a separating seam, the bag or sleeve pairs according to FIGS. 2, 2 a, always comes to a rhombus or rectangle 4 and 6 have rectangular and that according to FIG. 8 in additional pair of bags or sleeves in the tray, essentially rectangular shape, so that the workpieces to be placed on top of one another The sleeve pair 2, 3 according to FIG. 1 is made up of two with

are congruent and later individually or even 50 its edges 9,10 and 11,12 flush one above the other Stack formed into individual bags or sleeves that can be separated from flat film webs. A wide one each are. and a narrow opening 13 and 14 of the two sleeves

In a further embodiment of the invention can sen 2 and 3 is located on the side of each other during a standstill of the webs before the unconnected flat film edges 9, 10 and 11, 12. bring the separating weld seams also bottom welds 55 To make it easier to open the sleeves 15 and stitched along the two longitudinal edges of the panels 16 according to FIG. 2 are the flat films of the same width the width of a double packaging unit, 17 and 18 are offset from one another, so that on A single-layer opening edge 19 and 20 on the respective pointed side of each side at speaking distances an individual packaging unit is created in this way.

be brought that they the perforation and the 60 In the case of the sleeve pair 21 and 22 according to F i g. 2 a are Cross separating weld seams. In this way, single-layer opening edges 23 and 24 are formed by the later bag bottoms formed. that the upper flat film web around both opening

Furthermore, the two webs can have unequal width edges and are kept narrower than the lower flat one and with vertically superimposed film web.

Center lines are advanced intermittently. On 65 the pair of bags according to FIG. 3 corresponds to the In this way, a single-layer sleeve pair according to FIG. 1 is created on each side with the difference that Opening edge. The same effect can be achieved through a weld seam through the narrow openings be achieved that the two tracks of the same width 25, 26 are closed. Cross these welds

for safety reasons, to avoid even small manufacturing inaccuracies to achieve a complete closure of this side of the bag, the side welds and thus protrude on both sides by a small piece 27 into the wide opening side of the neighboring bag into it, where this does not interfere.

Fig. 4 shows the same as Fig. 3 in a rectangular Shape of the pair of bags instead of a rhombic one.

Fig. 5 and 6 show pairs of bags in rhombic and rectangular shape from one in the direction of Edges 28 and 29 extending tubular film web. The edges 28 and 29 are therefore closed Side folds of the flat hose web. To provide one side of the bag with an opening according to the invention each a concave cut 30 out through which a piece of waste 31 is removed so that so that the side fold is largely removed and the two hose walls are not connected in this area are so that a filling opening is created, ao To be sure of cutting the closed To avoid the bottom sides of the neighboring bags to be held, the arcuate cut 30 ends a short one Piece 32 (Fig. 6) before reaching the side edges of the bag.

The sleeve pairs according to FIGS. 7 and 8 with open Bag ends correspond to the embodiment according to FIG. 2 with staggered, equal widths Flat tracks with the difference that both the perforation weld 33 and the side Separating weld seams 34 and 35 curved to achieve a pleasing appearance are.

In the rhombic shape of the bag or sleeve pairs, the perforation weld runs perpendicular to the web or tube edges, while the separating welds run obliquely to them. In the case of the rectangular shapes of the pairs of bags or sleeves, the separating weld seams run perpendicular to the web or bag edges, while the perforation weld seam runs obliquely to them. In the embodiments according to FIG. 7 and 8, this is only essentially true, since the shape of the curve causes small deviations from the vertical.

Flat film webs 39 and 40 of the supply rolls 41 and 42, which are inserted offset from one another, are of the Deflection roller 43 brought together and around a dancer roller 44 and over a second deflection roller 45 is fed to the side welding stations 46 and 47, where the bottom welding seams 25 and 26 of FIG corresponding bottom welds 36 and 37 are produced. The double film then passes the inclined transverse welding station 48, which is used during manufacture pairs of rhombic pouches can be put straight. In this cross welding device a inclined perforation weld seam 38, the bottom weld seams 36 and 37 crossing, produced. Then the double film runs through the rollers of the main feed station 49, which also step by step The length of the film is determined. The feed station 49 pushes the prepared double film into the second Cross-welding station 50, which can be tilted during the production of pairs of rhombic bags. These Welding station 50 is equipped with separating seam jaws that perform both a cut and an edge weld of the generated cut edges.

The pairs of bags thus completed are conveyed onto the delivery table 52 by means of the delivery belts 59 and collect there in a stack 53.

Claims (7)

Patent claims: 1. Process for the production of rectangular or rhombic double packaging units Made of plastic film, consisting of conical ones connected to one another by tear-off perforations Individual packaging units, characterized in that two superimposed Flat film webs are intermittently moved forward that during a standstill of Lanes perforation welds and during a subsequent standstill of the lanes Separating weld seams in the width of a double packaging unit corresponding distances are generated in the webs, with the separating welds at an acute angle to the perforation welds be attached so that they are at the intersection with the longitudinal center lines of the tracks approximately midway between the adjacent Perforation welds run. 2. The method according to claim 1, characterized in that during a standstill the Tracks also have bottom welds along the two prior to making the separation welds Longitudinal edges of the webs in the width of a double packaging unit corresponding distances be attached to the respective pointed side of an individual packaging unit in such a way that that they cross the perforation and the separating welds. 3. The method according to claim 1, characterized in that the two tracks are unequal Have width and intermittently advanced with vertically superimposed center lines will. 4. The method according to claim 1, characterized in that the two tracks are the same Have width and intermittently advanced with laterally offset center lines will. 5. The method according to claim 1 or 2, characterized in that the perforation welds perpendicular and the separating welds are made at an angle to the longitudinal direction of the web. 6. The method according to claim 1 or 2, characterized in that the perforation welds at an angle and the separating welds are applied perpendicular to the longitudinal direction of the web. 7. The method according to claim 1, characterized in that the two tracks at their Longitudinal wheels are integrally connected and that during a standstill of the tracks before Apply the separating weld seams in the width of a double packaging unit Clearances on the respective broad side of an individual packaging unit form the integral connection between the two webs canceling cutouts attached to the longitudinal edges of the web will. 1 sheet of drawings