DE2720907C2 - Tube-like container and method for its manufacture - Google Patents

Description

The invention relates to a tube-like container according to the preamble of claim i and also a method for manufacturing such a tube-like container.

A tube-like container of the type mentioned is already known from GB-PS 11 30 978 This The container consists of a layer material which is welded at the edges, leaving an opening free The tube head must be inserted before the edges are welded. A disadvantage of this container is that the tube head is to be inserted before the edges are welded, and thus the tube head even the opening for filling in the filling goods is determined. In addition, a space-saving stacking of the containers, in particular flat stacking, is not possible.

From DE-GM 19 94 361 tube-like containers are known in which the container body is made of plastic tubes is formed. The tube head is before welding the plastic tube or the film used and by the welding process within of the container attached With this container, the filling opening is due to the size of the tube head fixed; a flat stacking of the containers produced in this way is not possible.

In DE-GM 17 95 668 a container made of flexible material is described in which the container body is formed by a circumferential weld seam. To safely take up a stopper, the is the Plug-receiving area of the container of higher strength to allow removal of the plug, sure to prevent.

In DE-OS 19 09 928 a tu three parts existing container is specified, the pouring spout is firmly connected to the container body by welding.

Finally, from FR-PS 55 629 a unit consisting of several container bodies is known, in which the openings of the individual container bodies can be closed by a common cover.

The invention is based on the object, a tube-like container according to the To create the preamble of claim 1, the insertion of the tube head after filling the Allowed container with the filling material, as well as to specify a method according to the tube head and container with each other can be connected.

This object is achieved according to the invention by the characterizing part of claim 1 and solved by the features of claim 9.

Further refinements result from the subclaims.

The tube-like container is created by simply placing two flat parts on top of one another to form the Container body produced. In the finished container body, a tube head can subsequently be used as a Insert locking mechanism, the tube head in a known manner in the manner of a screw cap is lockable.

The subsequent insertion of the tube head enables the flat and thus space-saving storage of the

Container body and also enables filling of the product through a relatively large filling opening, which can be closed tightly and quickly with the tube head after the filling material has been filled. Of the Tube head is resilient so that it can Closing pressure when heat sealing absorbs, but on the other hand an opening when on the walls of the container exerted pressure values prevented '

Due to the relatively large filling opening Advantageously, rapid filling of any and possibly tough filling goods is ensured Container bodies are advantageously used with cardboard coated with thermoplastic

When using the method and the tube-like container it is advantageously achieved that no unnecessary space is consumed during the transport of the unfilled container and damage of the container is excluded. Printing on the container is possible in a simple manner. In the end A cheaper material than the usual metal can be used as the material for such containers. Compared to a plastic container, there is finally the advantage of easy handling, especially when emptying the container, since there are no or lower restoring forces than with a container made of plastic are to be expected, which removes the filling from the area of the outlet connection after the release of the Suck back the container or after the pressure exerted on the container has been released. Special Packaging boxes with additional instructions for use are unnecessary with the tube-like Container; Instructions for use can easily be applied to the edge area of the container body.

The following are preferred embodiments of a tube-like container and a method for the production of such a container described with reference to the drawing. It shows

Fig. La a tubular container in longitudinal section,

Fig. Ib is rotated by 90 * compared to Fig. La Longitudinal section through a tube-like container,

2 shows a view of the tube head with a partial view of the container body,

3 shows a modified embodiment of the tube head with part of the container body,

F i g. 4 shows a schematic representation of successive steps for manufacturing the container body according to Fig. 1 made of layers that can be folded around a central fold line,

Fig. 5 the successive steps for filling and closing the container body,

F i g. 6 is a schematic illustration for explaining the printing of what is present in wave form Material for making the container bodies,

7 the successive steps for manufacturing the container body made of unfolded material and, if necessary, printed material as shown in Fig. 6,

Fig. 8 successive steps in the production of container bodies from rolled up, web-shaped and unfolded as well as unprinted continuous material,

9 to 13 representations of different embodiments of containers,

14a to 14d a schematic representation of the Manufacturing steps in the manufacture of container bodies,

15 shows a longitudinal sectional view corresponding to FIG a container, ..; _.

16 is a longitudinal sectional view corresponding to FIG. 1 b by the in F i g. 15 illustrated container, <uiid FIG. 17 shows a plan view of the container according to FIG. 16.

In the one in Fig. La, Ib in two perpendicular to each other The tube-like container shown standing longitudinal sections denotes 1 the container body and 2 the Tube head, soft along 'a connecting area 3

ίο are inextricably linked. The container 1 consists of a layer material according to FIG for example, two opposing plastic-laminated cardboard blanks to form a pocket which defines a filling space 4 in the finished state of the container, and a tightly closing one Edge area 5 are firmly connected to one another. The tube head 2 is made of plastic or metal and is manufactured separately; it has an opening 6 and a tube shoulder 7. At the periphery is a Connecting flange 8 is integrally formed on the outside thereof, which preferably runs parallel to the longitudinal axis of the tube Connection area 3 between tube head 2 and Container body 1 is present. The connection area 3 is expediently created by heat sealing, with the plastic lamination of the layer material is welded to the outer surface of the connecting flange 8 will.

The container shown in Fig. 1 are modified Embodiments in Fi g. 2 and 3 shown below

so use the container body 9 that as done printed flat or web material can be withdrawn from supply rolls (Fig. 6) are from the Components shown 9, 10 and 9, 17 existing containers can be produced. The tube head 10 according to Figure 2

ü has an opening 11 and a tube shoulder 12, as shown in FIG. 1 is described. An inverted U-shaped connecting flange 13 adjoins the tube shoulder 12 radially outward. After creating a transverse seal at the lower / not created end of the container body, spreading the filling opening or rounding the upper edge 14 of the container body 9 and foiling it, the edge 14 of the container body 9 is in the direction of the arrow A into the opening 15 of the connecting flange 13th

■ * '· inserted. By pressing the outer leg 16 radially inward on the connecting flange 13, the tubular container body 9 is firmly connected to the tube head 10. The resulting connection can also be glued or by the action of heat

'> (> be welded. It is through the circumferential Annular groove between the tube shoulder 12 and the connecting flange 13 an application of pressure and Counter pressure forces outside the container itself are possible ± -.

"A tube head 17 according to FIG. 3 is corresponding to FIG. 1 designed and has an essentially parallel parallelism Connecting flange 18 on. The container body 9 is after transverse sealing of its lower, not shown At the end, the spreading of the filling opening or rounding

bo of the upper edge 19, filling the container body 9 and Sliding its edge 19 onto the connecting flange 18 is firmly connected to the tube head 17.

The tube-like containers produced according to Fig. 1, 2 and 3 consist of the tube head 2, 10, 17, the is preferably provided with a completely assembled, not shown tube closure, and the Container body 1, 9 in the form of a flat blank (Fig. 1) or a flattened one

tubular web material, wherein both the blank and the tubular web material with all the desired flat printing processes according to FIG. 6 printable prints is provided.

According to Figures 6, 7 and 8, the web material pre-treated and continuously delivered to filling and closing devices. Tubular web material can, for example, be based on the method shown in FIG The manner shown are printed and prefabricated for use on a tube making machine, not shown. The practically without intervention by Operating personnel possible production and handling of the container body material allows a largely sterile processing of the same, also in the filling area, so that only in extreme cases an additional Cleaning or sterilization of the filling space or the filling area on the container body becomes necessary. The tube heads are manufactured practically without operator intervention, with locking elements provided and delivered to the tube filling and closing stations, so that the tube heads are not additionally need to be sterilized.

FIG. 4 shows the possibility of producing a container body of the type shown in FIG. 1 used. Blanks 21 made of a layer material, which is coated on one side with an airtight and liquid-tight, sealable thermoplastic material and contains cardboard, metal-coated paper or the like as carrier material, are provided with a fold or score line 22 in their middle. The size and shape of the blank 21 is preferably chosen so that subsequent reworking, in particular cutting operations, is omitted as far as possible. In a further operation, the blank is folded along the fold line 22 (arrow B) so that the sheet side 23 provided with the thermoplastic layer comes to lie inward and the sheet halves come to lie congruently on top of one another. The parts 24 formed in this way are then fed to a heat-sealing point (not shown) in which the two sheet halves lying on top of one another in the area 25 of the partial illustration on the right in FIG. 4 are welded together tightly by heating the thermoplastic layer mentioned. A filling area 26 which is accessible from the opening side 27 remains unwelded. If the blanks 21 are not already provided with an imprint, imprints can be applied in practically all of the other manufacturing stages shown in FIG. If a highly sterile filling area is desired, the imprint is expediently carried out either before the blank 21 is coated or after the welding process has been completed in the last stage according to FIG. 4th

In Figure 5, the manufacturing steps of a filled The container shown on the left in Fig. 5 there is a stack 28 of containers. From this pile individual container bodies 29 are lifted off and then the filling opening 30 of the filling space is easy pre-expanded In a subsequent station, the filling space 31 is expanded so much that the intended The filling station is marked with 32. The following operation consists in the approach of a tube head 33 and its placement on the filled container body 34. Finally, the connecting flange of the in FIG. 1 and 3 The tube head shown is welded to the upper end of the container body, as in FIG. 5 on the far right is shown by the arrows in the upper end region of the container body 34 and on the edge of the tube head 33.

F i g. 6 shows one way of printing on Rolls 35 supplied plastic-laminated web material in the form of flanged web-shaped s hose material for the production of containers of the type shown in Figures 2 and 3 or in the form of Web material from which blanks 21 of the type shown in FIG. 4 are separated. Set rollers 36,37 schematically represents a printing unit with which both

to can be printed on both sides. With a supply roll with printed laminated web material is designated.

The web material of the last-mentioned type can also be used in an arrangement according to FIG. Printed web material provided with a central fold line 40 is drawn off from a supply roll 39 and fed to a folding station 41. In this Folding station creates a continuous double web material 42, so that thermoplastic laminated Opposite surfaces. The web material then reaches a sealing or welding station 43, in which container bodies 46 of the in F i g. 5 with 28 designated type can be produced. In

The container bodies 46 are placed in an expanding or opening station 47 by an expanding device 48 opened and filled in a subsequent filling station 49. A feed device 50 guides tube heads 51 to a closing station 52, in which the filled Container body are closed and sealed. Finally, the sealed containers 53 in a separating station 54 darch knife 55 separated.

A way of producing existing on a continuous belt and to the The ready-to-fill container bodies for consumers or tube fillers are shown in Fig. 8 on a Supply roll 56 is unprinted and unfolded plastic-laminated web material! B. the type described, which with a printing unit 57 for Attaching the tube labeling is supplied. To After printing, the web material passes through a scoring or folding device 58 for making a score line Then the web material is folded in a folding station 59 so that the with the The sheet material side with thermoplastic lamination comes to lie on the inside Web material then arrives at a continuously operating heat sealing station 60 in which the lamination, with the exception of the filling space points 61, is welded will. The web material leaving the station 60 with the container body moldings continuously arranged thereon is then transferred to a second supply roll 62 wound, which is supplied by the container body manufacturer to the container consumer or container filler will. This then still requires a system, which in principle corresponds to that section of the one shown in FIG Arrangement corresponds to which an expanding or opening station 47, a filling station 49, a feed device 50 for the tube heads 51, a closing station 52 and a separation station 54 to produce filled individual containers ready for dispatch.

9 shows an embodiment of a container, in which, in addition to the container body 63, there is a relatively wide section 64 which, if necessary, is both tig is printed with a text Fig. 10 shows one Container 65 with a hanging loop 66; Fig. !! shows

'a container with a thread-like filling space 67 and a container body 68, hexagonal in elevation. These

Embodiment clearly shows that the container has a relatively large scope for design requirements have to offer. An application is shown in FIG. 12, wherein several (in the exemplary embodiment two Container 69, 70) which, for example, based on the in F i g. 1 described type are arranged in a container body 71 containing both containers side by side, the C.; / receiving compartment 72 for accommodating a tool 73. Such arrangements are For example, for the provision of multi-component adhesives or goods of different kinds Strength classes and the like can be used. Finally, FIG. 13 a stand-up container 74 with a rectangular container body 75, on which a triangular inactive leaf 76, 77, z. B. is pivotably articulated along a fold or score line 78.79.

A particularly advantageous production method is described with reference to FIG. 14. Individual large-area blanks marked A and "with mutually facing weldable thermoplastic layers are to be placed on top of one another and divided up so that the total area can be separated into individual blanks after the welding of the corresponding areas after the last process step according to FIG. 2 or also according to FIG. 14. Since the large-area blanks are easily fed to a correspondingly shaped welding device and are separated practically at the same time by punching, a method according to FIG. 14 can be carried out quickly and is advantageous. By changing the dividing lines, several containers can be provided within an edge area, such as B. by the embodiment according to FIG. 12 is described.

Containers 101 result from cut-outs which are separate and which can be placed on top of one another and connected according to Fi g. 15 to 17. In this FIG. 15 to 17 a somewhat modified tube head 102 at the same time shown. The connecting flange 8 deviates obliquely radially inward at the edge of the connecting surface 3 directed into the container body and forms one conical plug-in area 103, which enables the tube head 102 to be inserted into the end-spread Container body 101 lightened and thus accelerated.

The outlet connection 11 on the tube head 102 runs from the inside to the outside at least at the inner end 11a conical so that when you squeeze the upper.

the area of the entire container having the tube head 102, remove the remaining contents from the Container can be pushed out. The relatively large end region 11a of the opening U then allows also a squeezing.

The plan of the tube head 102 is shown in Fig. 17 and is at least on its outer, with the The end face of the lower part 101 terminating edge is approximately diamond-shaped. The corners 104 of the rautenför migen cross-section with the larger angle are rounded. The more pointed corners go into the edge areas 5 of the entire tube-like container about, while the flatter sides are formed by the rounded corners 104, whereby that of its end facing away from the tube head 102 according to FIG Tube head 102 adapts. The chosen and envisaged ctwsi flat shape favors », later that Squeeze out and fill this container beforehand.

Compared to the embodiment of FIG. 17 can the plan of the tube head 102 at least in its corresponding to the end face of the container body 101 Edge area of two flat arcs, in particular circular arcs, preferably of the same length, be formed, which meet at an acute angle in the edge region of the container body 101. In this embodiment is provided that between the preferably of

so inwardly outwardly tapering outlet connection 11 of the tube head 102 and its partially inwardly retracted connecting area 3 a channel-shaped circumferential groove 105 or the like recess is provided whose cross-section in the plane of the

Edge area 5 of the lower part 101 expediently larger than approximately at right angles to it due to the intended geometric relationships standing level is. This circumferential groove 105 allows a sealing device to attack after filling

of the container, so if a counterpressure in the edge area of the container is not caused by one in the container inserted mandrel can be included.

The outlet connection 11 can, in a known manner, at least in the area of its external thread, preferably wisely also in the area of the deeper, conical ones Zone 11a have a circular cross-section.

In addition 6 sheets of drawings

Claims (9)

Patent claims: 1. Tube-like container for liquid, pasty or similar filling goods, in which the container body is formed by flat, flat parts which consist of layer material and are welded at their edges leaving an opening free and with a tube head inserted into the opening, characterized in, that the tube head (2) has a tube shoulder (7) with an essentially axially oriented connecting flange (8; 13; 18) and that the connecting flange (8; 13; 18) in the area of the opening along a connecting area (3) of the container body ( 1) can be glued or welded to the layer material of the container body (1). 2. Container according to claim 1, characterized in that the flat parts forming the container body (1) consist at least partially of cardboard. 3. Container you claim 1, characterized in that that the tube head (2) from one with the thermoplastic surface of the container body (1) consists of weldable or bondable plastic material 4. Container according to one of the preceding claims, characterized in that the connecting flange (8; 13) forms a conical insertion region (103) and that the tube head (2) has an outlet nozzle (11) which at least at its inner end {\\ a) tapers conically from the inside to the outside 5. Container according to one of the preceding claims, characterized in that the Plan view of the tube head (2; 10; 17; 102) at least at its outer edge terminating with the connecting area (3) of the container body (1), for example Is formed diamond-shaped 6. Container according to claim, characterized in that the corners (104) of the diamond-shaped cross section are rounded with the larger angle. 7. Container according to at least one of the preceding claims, characterized in that the outline of the tube head (2; 10; 17; 102) at least at its edge region corresponding to the connecting region (3) of the container body (1) of two flat arcs, in particular circular arcs, preferably of the same length, which meet at an acute angle in the edge region of the container body (1). 8. A container according to claim 7, characterized in that between the outlet connection (11) of the tube head (2; 10; 17; 102), which is preferably conically tapered from the inside to the outside, and its partially inwardly retracted connecting flange (8; 13; 18) a circumferential groove or recess (105) is provided, the cross section of which is widened in the plane of the edge region (5). 9. A method for producing a tube-like container according to at least one of claims 1 to 8, characterized in that before the container body is filled, the two flat planar Parts placed on top of each other and in a manner known per se at their edges with the release of the Opening are welded together by the action of heat that after filling the Container body of the tube head inserted into the opening and along the connecting area is connected to the layer material by welding or gluing.