DE1098344B - Containers made of cardboard, cardboard, etc. Like. For the reception of fluids and device for its production - Google Patents

Description

GERMAN

The invention relates to a container which consists of two superimposed crosswise at its removal opening and interconnected blanks of cardboard, cardboard, metal foil or the like. Is shaped.

The invention is based on the object of providing a liquid-tight and sterile container made of cardboard or other plate-shaped material to be provided with a hygienic removal seal. Included the removal cap should be easy to open without affecting the sterile surfaces that pass through the opening of the container are exposed for removal, are exposed to adverse effects. That Opposite open end of the container is suitable for quick filling without recoil, after which the end can be closed by forming a hermetically sealed seam.

It is well known that in the case of conventional paper containers, the useful life is reduced to a relative a short period of time is limited during which the products that are packaged therein are delivered to the end user need to be distributed. These containers are preferably coated with paraffin or wax in order to obtain the to cover vulnerable, weak points of the walls and to seal them.

Containers of this type are used for purposes that are too fragile and unwieldy for the glass containers as well as being too expensive to use. This is e.g. B. the case when reuse after use is no longer an option.

It is already known to close the removal opening of a cardboard container and the like with a plug close. In a particular embodiment, a plug is used that is independent of manufacture of the container in a separate operation after the container has been manufactured will. In a further known embodiment, the plug is made in a cut piece of the container, but preformed independently of the removal opening.

The known closures had the problem that several openings after the container has been put together, must subsequently be brought into line. Such constructions have proven impractical and do not provide reliable seals for the dispensing opening.

The invention relates to the improvement of a known paper container which has beveled side walls and has a square or rectangular cross-section. In the smaller end- 5 <J The removal cap is attached to the surface of the container. This ensures that the in the container The liquid contained can easily be drunk away directly from the dispensing opening.

Containers made of cardboard, cardboard, etc.

for absorbing liquids

and apparatus for its manufacture

Applicant:

George Arlington Moore,
New York, N-Y. (V. St. A.)

Representative: Dr. F. Zumstein,

Dipl.-Chem. Dr. rer. nat. E. Assmann

and Dipl.-Chem. Dr. R. Koenigsberger, patent attorneys,

Munich 2, Bräuhausstr. 4th

Claimed priority:
V. St. v. America June 11, 1957

George Arlington Moore, New York, N.Y. (V. St. A.), has been named as the inventor

The invention also relates to a device for molding the container which has a movable mandrel and a fixed die and one in the die cooperating with the die head of the forming mandrel Has patrix head.

The object on which the invention is based is achieved in a container of the specified type in that that the blank part provided as a tear-open flap has a profile that extends into the removal opening is depressed.

This container can be molded in a device with a movable mandrel, a stationary die as well as one in the die cooperating with the die head of the forming mandrel Male head is equipped, according to the invention, the die head on one of the movement of the mandrel provided with suction openings arranged independent rod and that of a similar Rod attached male head to hold the blank together with the die head can be extended to the upper edge of the die.

The invention provides a secure removal closure of the container, which is a simple and easy opening of the container guaranteed.

The profile of the tear-open flap is preferably bordered on all sides. In the case of a container of the latter Kind can be one of the blanks or all of them

109 507/34

both be coated with thermoplastic material. These containers are made with a device in which both the die head and the die can be heated. Such a container can be made completely liquid-tight and sterile.

In the last-mentioned embodiment of the container, a cut part with a not be coated thermoplastic material, while facing this non-thermoplastic material Side can be coated with a thermoplastic material. By molding in a device, in which the die is heated, the corresponding parts of the blanks can be securely, liquid-tight and bandaged sterile.

This should be done in more detail with reference to the drawings, which illustrate exemplary embodiments according to the invention explained.

Fig. 1 shows the crosswise superimposed blanks from which the container is formed;

Fig. 2 shows a section along the line 2-2 in Fig. 1;

Fig. 2a shows a similar section through another embodiment of the removal opening, such as it is shown in Fig. 2;

Fig. 3 shows a section through an apparatus for molding the container;

Fig. 4 shows an enlarged section through part of the apparatus for forming the container;

Fig. 5 shows a perspective view of a container according to the invention;

Fig. 6 shows an enlarged section along the line 6-6 in Fig. 5;

Fig. 7 shows a section along the line 7-7 in Fig. 5;

Fig. 8 shows in perspective the closure end of a container;

Fig. 9 shows the same closure end as in Fig. 8, but opened;

Fig. 10 shows the closure end of the container in the tilted position, and

11 shows a section through a container with rounded corners.

Fig. 1 shows a container blank assembly consisting of from a first container blank 4 and a second blank 5 arranged above it The first blank is cut from foldable fiber material, and the inner surface is coated or otherwise treated with a film of material having thermoplastic properties. That thermoplastic material is treated bacteriostatically beforehand. Lines 6 and Line pairs 7 and 8 be incised on the side forming the outer surface, which has a central wall 9 and two walls 10 extending laterally opposite to the outside. Each wall 10 is provided with a pair of externally disposed edge flap parts 11 which extend from the incised Line 6 extend outward, and the central wall 9 is with similar opposing flap parts which are cut so that parts 12 and 13 extend from each incised line 8 to extend outside. The wall part 13 is also by two substantially parallel, perforated Lines 14 limited. Each line of the blank 4 extends parallel to the lines 7, however separated from them, over the wall 9 including the tab parts 12 and ends at their opposite ends in outwardly extending tab wall parts 13. The flange parts 11 and 12 are partially divided by incised notches which have edges 15 which converge inwards to form a blunt edge 16. The blunt edge 16 of each of the four notches is essentially central to the end of the transverse Lines 7 arranged. An inner surface part 19 of the central wall 9 or, alternatively, the corresponding outer surface of the wall 9 of the blank 5, which is defined by the perforated line 14 is limited, can be covered with a non-thermoplastic material 17, which by the broken Lines is shown schematically, using bacteriostatically pretreated material finds. The plastic charge 17 preferably extends outwardly across the pair of lines 8 and ends within a thermoplastic surface zone 18 of the link member 13.

The second blank 5 can be cut from the same material that is used for the blank 4 is used or made of another sheet material such as aluminum, plastic or made of another suitable material composition. The blank 5 is provided with a central wall 19, which is provided with two opposite, parallel cutting edges 20 that exactly lie above the lines 7 of the blank 4 and has two mutually opposite incised lines 21 which cover the underlying lines 8 of the wall 9. The wall 19 is cut out with a Part provided which forms an opening, the corner edges 22 within the perforated Lines 14 and the incised lines 21 lie. Each of the two laterally opposite wall parts 23 extends outwardly from each scored line 21 and has margins 24 on when it is formed of the container with the lines 6 of the wall 10 lie together. The inner surface of the wall 9 of the blank 4 and the outer surface of the wall 19 of the blank 5 can from the outset be connected to one another within the boundary lines that define these walls. At least that Flange parts 11 of the wall 10 are preferably pre-bent, along the lines 6 to the To facilitate shaping of the blank arrangement to the container. Fig. 2 shows the position of the stacked, interconnected wall parts of the blank arrangement. It should be noted that the Detail of the wall part 19 is covered by the wall part 9 of the blank 4 and that the perforated Lines 14 are covered by the wall part 19. The removal cap can also, as is shown in Fig. 2a-be formed, the from the opening of the wall part 19 cut piece 25 remains in place and Has boundary cutting lines 26 which allow this piece 25 forming a plug to be closed out of the opening remove when its surface is connected to the part of the wall part 9 that is being severed the perforated line 14 is torn.

The container is formed from the blank arrangement shown in FIG. 1. To this end the middle part of the blank arrangement is placed on the die 32 shown in FIG. 3. Fig. 3 shows the position in section along the line 3-3 of FIG. 1. The device has a mandrel 27, which has sloping outer walls that are aligned with the wall zones of the blank in Match. The mandrel 27 can be arranged on any holder, not shown and be connected in any way to a device that allows reciprocating

5 6

causes movement of the mandrel, for example, a suction opening 31 held. It is desirable Lever driven by a cam disc. One that this takes place faster before the mandrel in Rod 28, which has a die head 29, is the die entering, as in the dashed line in suitable bearings that are located within the form-shown. It is to be prevented that dorn are located, stored and with similar back and 5 the edges 24 of the side walls 23 during the mechanical means going from the formation of the container to the line 6 of the Wan movement of the mandrel 27 independent actuation 10 get into the wrong position. The walls connected. The die head sits in the nose 10 will be upwards and inwards, from its end of the mandrel, its surface parts are seen in the speaking corner edges, folded, and essentially flat and coplanar. The inside of the i ° is due to the effect of the die walls. The pre-forming mandrel is hollow and forms a vacuum chamber- curved flange parts 11 of the walls 10 remain space 30, which is suitably folded to a right angle with a vacuum and overlap the source is connected. A number of holes 31 are corresponding outer surface parts of the previously fixed the side wall is guided into the chamber, around placed side walls 23. The flange parts 12 To create suckling openings, the purpose of which will be described later on will. The die 32 has inner wall-facing outer surface portions of the side walls provided which coincide with the side fertilizers 23 folded, whereby the notches tenwandungen of the mandrel, and close its upper end in the flange and the edges 15 to the inlet in flange-like edge parts 33, which abut a flat are brought together so that at the end Have head surface. The die 32 is provided with a 20 locking cap for the corners of the end wall Provided heating, which arise for example from electrical. The effect of the heating elements inserted into the die 34 may exist, the mandrel pulls the flange parts in an over-set in bores which in the die body are in the vicinity of the lapping position to the corresponding surfaces of a each inclined wall arranged share the previously held wall parts where. The die can by any suitable 25 at the edges 24 of the side wall 23 in a Device to be held in a fixed position, being tight butted to the corresponding inner plastic it is arranged concentrically to the mandrel. surfaces of the corresponding edge part of the Wan-Ein Rod 35 with a male head 36 is suitable 10 to be pressed in the vicinity of the corners. the Neter way arranged in bearings that extend outside through the heating elements 34 through the wall of the of the die 32 are located. The rod is with a one-die heat passing through it to the plastic direction connected, which guided a reciprocating inner surface of the flange parts and creates a Movement of the rod enables a tight and tight weld around the male head. It should be noted that to guide through the die. The male head 36 is flat on the side walls of the mandrel and die provided with a stepped end face, which are a sloping one. Through the action of the outside of the pressure Shoulder part 37 and a transversely extending 35 kes between the cooperating formworks End face part 38, whose edge face recreate and become through the action of the heat is set, owns. The side wall surfaces of the cut parts are welded to one another in such a way that Patrizenkopfes are in accordance with the ab- the inner wall surface of the container completely inclined side walls of the mandrel from rough cut edges of the sheet material sloping. 40 is free, which in the original material before-The Containers will be tied from the blank as they are. After withdrawing the mandrel Shaped as follows: The interconnected central and the heads 29, 36 can be the container from die wall parts the blank assembly will also be ejected. The container 39, which by the Reference made to the surface profiles of the male and simple die device is in the die heads 36 and 29 inserted exactly. The 45 Fig. 5 is shown.

Heads are brought into a position in FIG. 4, a section of the tip of the form softener allows a space between them, mandrel 27 is shown enlarged. One recognizes the one To insert the blank exactly what the heads clamped section of the blanks between moved by the mechanical device against one another - the opposite surfaces of altered are to between their surfaces the 50 th die heads 40, 42 is arranged. The cut The inserted part of the blank arrangement to be clamped runs transversely to the section shown in FIG. 3. It men. The flat end of the mandrel with the Ma- a replaceable plate insert 39 is shown, Trizenkopf 29 is fitted by the mechanical device in a suitable manner in the front surface of the abtung is fastened under firm counterpressure against the male die head 40 modified. This head 36 moved into the die, as a result of which a die head 40 has a hollow rod part 41, Part of the wall 9 of the blank 4 into which the center of the mandrel 27 opens Section of wall 19 is inserted through extends. The modified one opposite him- and so the wall formation for the die head 42 lying on the removal side has a similar plate opening completed. The opposed to ten insert 43 and a rod part 44, which is in alignment Heads 36 and 29 are arranged together with the Wan- So with the rod 41 and through the Application parts of the blank assembly through the loading cavity of the die 42, as shown in FIG movement of the mandrel introduced into the die. That is, extends. The rod is with a central Boh-Wandungsteile 23 of the blank 5 are first provided tion in which an electrical heating through not shown folding devices folded, element 45 can be used to the Matrizen- namely to heat upwards and inwards from the corner head. The opposing heads edges away from the clamped wall parts. The 39 and 43 can have engraved surface parts Wall parts 23 lie on corresponding upper surfaces with which code or information surfaces, namely two opposite side symbols or desired trademarks, goods walls of the mandrel and will temporarily sign or the like in the surface of the end wall can be pressed onto this in the correct position by the action of the 70 of the container.

Referring to Figures 6 and 7, it is stated that the cruciform blank assembly and die assembly formed a container of substantially square cross-section. In FIG. 6, the edge 24 of the wall part 23 is embedded in the plastic wall covering material activated by heat. This configuration of the wall parts ΙΟ, 11, 23 and the edge 24 is the result of the production through the interaction of the mandrel and die as well as the heads on the wall parts of the blanks and can be derived from the fact that the walls 10 and the walls arranged transversely thereto 23 are finally pressed with the flange parts 11 between the beveled wall surfaces of the mandrel and die. The pressing of the mandrel within the die can easily be adjusted with devices not shown. The dense edge surface abutment is caused by the pressure which, as shown in FIG. 6, is directed inwards at the same time and spreads across the surface which interacts with the edge. The heat, which is supplied to the die by the heating elements during the bending out of the wall parts of the container, vulcanizes the thermoplastic material at all converging edges, which are denoted by α , with one another. The preferred arrangement of the heating elements 34 with respect to the wall parts which are to be welded to one another is indicated in FIG. 11 by the broken circles. In the part shown in FIG. 7, it should be pointed out that the edges and surfaces of the detachment part 19 of the side wall 23 are essentially embedded in the plastic charge material. The inner plastic surface of the recessed wall part 46 of the wall 9 is connected to the inner plastic surface of the wall 19, which in turn is connected to the inner plastic surface of the wall 10. The edge surface parts of the wall 19 between the perforated lines 14 and the cut edges 22 are covered with a non-thermoplastic material, and the opposing thermoplastic material on the inner surface of the wall 9 seals the edge zone of the opening in the blank 19 with the corresponding parts of the Cut 9 from the surface adhesion tension. The perforated cutting lines 14 of the wall 9 are sealed against the outer surface of the wall 19, and the surface parts of the walls 9 and 19 which are in contact with one another and which extend outwardly from the perforated line are permanently sealed against one another. The recessed wall part 46 of the wall 9 seals the cut-out part of the inner wall 19. In this way, a liquid-tight closure is formed at the head end of the container which can be covered with a plastic cap or hood 47 to keep the outer surface clean and sanitary while the container is on its way to the end user.

The liquid-tight closure of the container is shown in perspective in FIG. It should be noted that the outer surface of the flange parts 11, 12 and 13 are coplanar with respect to the surface. The flange parts 12 are substantially from the central ones Tab parts 13 separated, namely by two lines of weakness 14, whereby the tab and their entire wall part, which extend over .die wall 9, are suitable, in a clean manner, the container, as FIG. 9 shows, to open and to release the opening 48 in the same way. The end of the tab the flap 13 can be provided with a crease line 49, whereby the gripping of the unattached Flap end should be relieved. With your fingers you can pull on the tab and along it the cutting lines 14 tear open. This end of the tab is also suitable for the plastic hood 47 to remove. The surface parts 17 that are released by opening are the same as before mentioned, non-thermoplastic film material, which covers the outer surface of the corresponding Wall protects against being torn. It should be desirable to keep the container during to close again after use, the parts 13 and 8 can be designed accordingly. Of the Part 46 can be used to be reinserted into opening 48, and into it be held by the friction between the edges 22. On the other hand, the wall part 13 can by means of of the tabs are torn off and permanently removed from the container if so desired is. The part of the open closure labeled 51 shows the wall surface zones and behind the wall 23, which originally with the corresponding surface parts of the various Wall parts was firmly connected and sealed. As already described, the surface part 17 of the container kept sterile by bacteriostatic treatment of the plastic material used will. The bacteriostatic treatment can be carried out by active ingredients that are known for example under the trade name Coropex. Such a pretreatment of the plastic The material of the walls of the container makes its interior germ-proof, including the surface parts, which are designated by 17 and which come into contact with the human lips can, if the contents are to be drunk directly from the opening of the container (see the container shown in FIG. 10 in the open position). The effect of the surface treated in this way 17 is increased and strengthened by appropriate sanitary treatment of the neighboring wall parts through the plastic hood 47, which is arranged over the storage opening of the container.

The side walls of the container can be modified as shown in FIG. 11, the The first blank consists of a relatively strong cardboard and the second blank sheet a relatively thin aluminum. The wall 52 and that which forms a whole with it Flange wall 53 is provided with a rounded corner 54, which starts from the removal closure end with increasing radius extends along the edge of the sloping side wall and reaches its maximum radius at the base opening of the container body. The second cut 55 made of aluminum or any other suitable sheet material is most appropriate inner wall part of the flange 53 attached. The longitudinally extending cutting edge 56 of the wall part 55 runs essentially along the longitudinal extending centerline of the curved edge with variable radius. The edge 56 cannot how shown at the edge 24 in Fig. 6, abut. However, the seam on the edge part 56 is also impenetrable. If this is not the case, it can be inserted into the wall 52 with a corresponding thickness pressed in near the edge. The origin-

The purpose of the embodiment shown in FIG. 11 was to provide round edges on the side walls create the container so that the closure of the same with a metal cap of the usual type could be done. To provide a cohesive outer surface around the entire base of the container create, the flanges 53 can just like the flanges 11 shown in Fig. 5 with longitudinally extending Corner edges are provided that abut against one another or extend against one another, so that they partially touch, as shown by the dashed lines 57. The south turns can be provided with end elements that can be folded and firmly connected to each other, to form a hermetic seam.

It is clear that the cross-shape blanks are formed from sheet material in any number of different shapes can be used to create a container intended to serve a predetermined purpose. That used Coating material, the container walls can also after the container from the The die is removed, can be post-treated. For this purpose, the wall parts of the first cut, which comprise the parts of the second blank, with a coating of thermoplastic, adhesive To provide material on the surface parts that will later form the seal-forming zones. These Zones are shaded in FIG. 1.

Claims (7)

Patent claims: 1. Container, which consists of two superimposed crosswise at its removal opening and with each other connected blanks of cardboard, cardboard, metal foil or the like. Is formed thereby characterized in that the cut part provided as a tear-open flap has a profile that extends into the Removal opening is pressed. 2. Container according to claim 1, characterized in that the profile of the tear-open flap on all sides is outlined. 3. Container according to claim 1 or 2, characterized in that the profile from the cutout the removal opening is formed. 4. Container according to one of the preceding claims, characterized in that the blank with the profile and / or the blank with the removal opening with a thermoplastic Are provided with a coating. 5. Container according to one of claims 1 to 4, characterized in that one of the blanks with thermoplastic material, the other with non-thermoplastic material. 6. Apparatus for molding a container according to any one of the preceding claims with a movable mandrel, a fixed die and one in the die with the die head of the mandrel cooperating male head, characterized in that the female die head (29) on one of the movement of the mandrel provided with suction openings (27) independent rod (28) arranged and the male head attached to a similar rod (35) (36) for holding the blank together with the die head up to the top Edge of the die (32) is extendable. 7. Apparatus according to claim 6 for forming a container according to claim 4 or 5, characterized by heating the die head and the die. Considered publications:
French Patent No. 427,691;
British Patent No. 377,106;
U.S. Patents Nos. 2,135,855, 2,234,167,
272 203, 2 296 889, 2 750 097. 1 sheet of drawings © 109 507/34 1.61