EP0793574A2

EP0793574A2 - Process for the production of blanks for folded cartons

Info

Publication number: EP0793574A2
Application number: EP95936952A
Authority: EP
Inventors: Michael Kühner; Norbert Schempp
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-23
Filing date: 1995-11-22
Publication date: 1997-09-10
Anticipated expiration: 2015-11-22
Also published as: DE59503016D1; EP0793574B1; ATE168929T1; WO1996015902A2; WO1996015902A3; DE19543579A1

Abstract

The proposal is for a process for producing cartons from a sheet of paper, cardboard, pasteboard or plastic and a folding blank for implementing the process, in which the outside dimensions of the object to be packed are found and fed into a computer. The computer calculates the positions of the lines for a folding blank (1, 20, 46) for a folded carton in which the carton is double-walled and protects the packed object from dust and damage.

Description

Process and folding blank for the production of folding boxes

State of the art

The invention is based on a method for producing boxes from a sheet of paper, cardboard, cardboard or plastic or on a folding blank for folding boxes closed on all sides according to the category of independent claims 1 and 5.

Known methods are used to manufacture large numbers of boxes of a certain size. They are usually manufactured using a stamping process. Special punching tools are required for every shape and size of a box. The production of a punching tool is only worthwhile if a large number of boxes are produced with this tool. If the box serves as packaging for mass products, it is advisable to adapt the shape and size to the product. In all other cases, standardized sizes are used as packaging boxes, which are usually a good deal larger than the object to be packed. The volume of the box that is not filled by the object is filled with filling material. Apart from the fact that this additional packaging material pollutes the environment, the boxes, which are too large, make the transportation and storage of the products more expensive. In addition, the packaging that is not adapted to the object can have an adverse effect on the packaged object itself, since the object is not supported or held by the box. That is why, for example, precious old books are specially designed for Books made boxes. The special production is usually done by hand by the bookbinder and is very expensive. The latter also applies to custom-made boxes in other areas.

In addition, folding boxes which are closed on all sides are known from a folding blank and can be closed without additional connecting means. They serve as packaging for books, food or electrical devices, for example, and protect the packaged item during transport or temporary storage from damage caused by mechanical loads, such as impacts, or from gross contamination. This protection is usually sufficient for objects with a certain load capacity. However, the known boxes prove to be disadvantageous when storing or transporting very sensitive objects, such as old books or museum objects. In particular, dust can penetrate into the known boxes, which has the disadvantage of being stored over a longer period of time.

The invention and its advantages

In contrast, the method according to the invention for producing boxes has the advantage that boxes of almost any shape and size can also be produced in small numbers or as individual pieces. Not only are cuboidal, but also cylindrical, pyramid or polyhedral boxes are possible. The box is adapted directly to the external dimensions of the article to be packaged, so that the article completely or almost completely fills the volume of the box, and the article is supported and held by the box. The use of filling materials, for example polystyrene, can be dispensed with. Moreover, the box has the smallest possible dimension for the packaging of the item, what in turn is advantageous for transport and storage. Furthermore, the box can be adapted to special requirements, such as reinforced bottom or reinforced side walls for particularly stable boxes. The production of the boxes is cheaper than the manual production by the bookbinder. It takes approx. 180 s to make the folded blank, which is many times faster than the manual cut.

The external dimensions of the object can be determined manually or using a scanner. The computer program specifies special types of boxes, but there are no restrictions for the specified types, apart from the necessary stability of the box. The computer program calculates the positions of the lines along which the sheet is to be grooved, grooved, milled, perforated, scored and cut for the selected box type and the specified dimensions of the object to be packaged. These lines later make it easier to fold the box out of the blank, since the material can preferably be folded along these lines. The program also determines the position of the lines along which the cut is to be cut. The pattern maker table is comparable to an XY plotter. The sheet of paper, cardboard, cardboard or plastic is held on a plate by negative pressure. A processing head that is equipped with the necessary tools is moved across the sheet in two independent directions. The computer program specifies the path that the head has to travel and which tools must be operated in each case. The blank is preferably cut out as the last step, since the blank cannot be held as well as the complete sheet. If there is a spatial distance between the user of the method and the consumer, the cut can be made to the Consumers are sent because the cut takes up less space than the box.

According to an advantageous embodiment of the invention, the box is produced by folding the blank along the lines and plugging the different sections together from such a blank. This process can also be used to produce boxes that do not require additional means, such as clips or glue. These boxes are held together solely by the pressure that the various sections exert on one another. Such boxes are very environmentally friendly and do not burden the packaged item, for example, by solvent vapors from adhesives.

According to an advantageous embodiment of the invention, the sheet is labeled by a labeling device provided on the processing head. For this purpose, a pin is attached to the processing head which, like the tool, is controlled by the computer program. Together with the positions of the creasing, grooving, milling, perforation, scoring or cutting lines, the position of the text and the text itself are first entered into the computer. Bar codes or drawings can also be entered.

According to a further embodiment of the invention, the box is made from a cardboard which contains an alkaline buffer and no acid-forming components. Such boxes are particularly suitable for archiving books that are kept for several years and decades. These are mostly valuable books that are to be protected from any kind of damage. The aim of the box is to prevent acid or acid formers from penetrating the book and thereby damaging the book. The alkaline buffer binds the acid so that it cannot pass through the box. The folding blank according to the invention (claim 5) has the advantage over the generic folding blanks mentioned above that the walls of the associated folding box are partially at least double-walled and that the inwardly facing surfaces of the walls have no abutting edges. The reinforced walls are very stable against mechanical loads, they ensure that the packaged item is not damaged, for example during transport, by the action of external influences. Thanks to the completely smooth surfaces of the interior of the folding box, which are free from abutting edges, the packaged object can be prevented from being damaged during a movement relative to the box. This is particularly important during transport and when inserting the object into the folding box. Butt edges can get caught on the object and damage when the object moves relative to the butt edges.

Advantageously, there is a fold edge on each edge of the folding box between two adjacent fold parts of the fold blank. There is no edge on the folding box where only two cut edges meet and where there is a slit between the folded folding parts. This means that no dust and no other coarser impurities can penetrate into the folding box of the folding blank according to the invention. The folding box is therefore impervious to contamination. This is particularly important when storing objects, for example books, over a long period of time.

According to an advantageous embodiment of the invention in this regard, the folding blank has the features of claim 6. The associated folding box has a particularly stable front and rear wall, a stable lid and a stable bottom fitted. The folding box can advantageously be closed by means of a tab which can be inserted into a slot.

According to a further advantageous embodiment of the invention, the folding blank has the features of claim 8. The associated folding box is particularly reinforced on the side walls and on the front and rear walls. The upper part of the folding box, consisting of the lid, side parts and parts of the front wall, completely encompasses the lower part of the folding box consisting of bottom and side parts and parts of the front wall, so that the ingress of dust can be excluded. To open the folding box, part of the rear wall is pivoted away from the lower part together with the upper part of the folding box, so that the box can be conveniently filled or emptied.

According to a further advantageous embodiment of the invention, the folding blank has the features of claim 9. The associated folding box corresponds in part to the folding box according to claim 8, since the side walls, as well as the front and rear walls are particularly reinforced in this folding box. In addition, the lid and bottom of the folding box have a triple wall thickness, which gives the folding box additional stability. Also in the folding box according to claim 9, the upper part completely surrounds the lower part, so that the ingress of dust can also be excluded here. For opening, as with the folding box according to claim 8, part of the rear wall is pivoted away from the lower together with the upper part of the folding box, which facilitates the filling and emptying of the box.

According to a further advantageous embodiment of the invention, the folded blank consists of an age-resistant corrugated or solid cardboard which contains an alkaline buffer and no acid-forming components. The associated Folding boxes are particularly suitable for archiving objects that contain paper or fabric. These include valuable books, for example, which are kept for several years and decades and are intended to be protected from any kind of damage. The aim of the box is to prevent acid or acid builders from entering the book and damaging the book. The alkaline buffer binds the acid so that it cannot pass through the box.

Further advantages and advantageous embodiments of the invention can be found in the following description of the drawing and the claims.

drawing

Embodiments of the object of the invention are shown in the drawing and described in more detail below. Show it:

1 folding box of a folding blank according to the invention in a perspective view,

2 folding blank of the folding box shown in Fig. 1,

3 folding box of a further folding blank according to the invention in a perspective view,

4 folding blank of the folding box shown in Fig. 3,

5 folding box of a further folding blank according to the invention in a perspective view,

Fig. 6 folding blank of the folding box shown in Fig. 5. Description of the embodiments

In Fig. 1, a folding box is shown, the folding blank has the features of claim 2. To open the folding box, the tab 18 is pulled out of the slot 17 and the lid part 13 together with the parts 4 and 14 of the front and rear walls are folded away. In order to be able to fill or empty the box, the tabs 11, 12 and possibly the tabs 7, 8 must also be opened. The box can be put together in a simple manner from the one-piece folding blank 1 shown in FIG. 2. No additional connecting means such as adhesive or clips are necessary for this. Parts 2 to 18 are simply folded along the grooved lines between two adjacent parts and inserted into each other. The lower part of the box is held together in particular by the tabs 9 and 12, the two front parts 3 and 15, and the bottom part 16, while the back part 4, the lid part 13 and the front part 14 together with the tab 18 which can be inserted into the slot 17 hold the box together as a whole.

In Fig. 3 a folding box is shown, the folding blank shown in Fig. 4 has the features of claim 4. In this box, the lid part 31 with the side parts 32, 33 and the front parts 36, 37 and the back part 23 can be folded away from the lower part of the box. The lower part of the box consists of the bottom part 21, the side parts 23, 24 and the front parts 22, 26, as well as the associated flaps 27 to 30 and 40. When the folding box is folded out of the folding blank 20, the front parts 26 and 37 arranged tabs 38, 40 inserted into the slots 39, 41 provided for this purpose. To improve this connector there are two parallel between the two front parts 36 and 37, and 22 and 26 Grooved grooves 43, 44, thanks to which the two front parts 36 and 37, and 22 and 26 run parallel when the box is put together. The circular opening 42 of the folding blank forms a semicircular handle opening in the box, which facilitates opening of the box.

A folding box is shown in FIG. 5, the associated folding blank from FIG. 6 of which has the features of claim 5. Similar to the folding box shown in FIG. 3, the folding of the box consisting of cover parts 62, 73, side parts 65 to 68, and the associated tabs 63, 64, 69, 70, 76 away from the lower part. The upper and lower parts of the box are identical with the exception of the rear part 49 and the tabs 54, 55. To fix the bottom part 61, tabs 74 are arranged laterally on the bottom part, which engage in the slots 75 between the side parts 56, 57 and the tabs 58, 59 when the folding box is put together. The same applies to the tabs 76 of the lid part 73 and the slots 77. The circular opening 78 of the folding blank forms a semicircular handle opening in the box, which facilitates opening of the box. In contrast to the box shown in FIG. 3, this box has a lid and base with three times the wall thickness.

All features shown in the description, the following claims and the drawing can be essential to the invention both individually and in any combination with one another. List of reference numbers

1 folding blank 42 opening

2 bottom part 43 groove

3 front part 44 groove

4 back 45

5 side panel 46 folding blank

6 side part 47 bottom part

7 reinforcement tab 48 front part

8 strap for reinforcement 49 back section

9 tab for reinforcement 50 side part

10 tab for reinforcement 51 side part

11 tab for reinforcement 52 tab for reinforcement

12 reinforcement tab 53 reinforcement tab

13 cover part 54 flap for reinforcement

14 front 55 flap for reinforcement

15 back part 56 side part

16 bottom part 57 side part

17 slot 58 tab for reinforcement

18 tab 59 tab for reinforcement

19 60 front part

20 folding cut 61 bottom part

21 bottom part 62 cover part

22 front part 63 flap for reinforcement

23 back part 64 flap for reinforcement

24 side panel 65 side panel

25 side panel 66 side panel

26 front part 67 side part

27 tab for reinforcement 68 side part

28 tab for reinforcement 69 tab for reinforcement

29 tab for reinforcement 70 tab for reinforcement

30 tab for reinforcement 71 front part

31 cover part 72 front part

32 side part 73 cover part

33 side part 74 tab

34 tab for reinforcement 75 slot

35 tab for reinforcement 76 tab

36 front part 77 slot

37 front part 78 opening

38 tab

39 slot

40 tab

41 slot

Claims

Expectations

1. Process for the production of boxes from a sheet of paper, cardboard, cardboard or plastic characterized by the following process steps

- determining the external dimensions of the object to be packed,

- entering the external dimensions into a computer,

Determining the position of the lines along which the sheet is to be grooved, grooved, milled, perforated, scored and cut by the computer with the aid of a computer program,

Control of the processing head, equipped with creasing, grooving, milling, perforation, scoring and cutting tools, of a pattern maker table holding the sheet by the computer,

- Grooving and / or grooving and / or milling and / or perforating and / or scoring the sheet by means of the grooving, grooving, milling, perforating and scoring tools of the machining head along the lines determined by the computer program,

- Cutting the sheet into a folding blank by the cutting tool of the processing head along the lines determined by the computer program.

2. The method according to claim 1, characterized in that the folded blank is folded and put together to form a box.

3. The method according to claim 1 or 2, characterized in that the sheet is labeled by a labeling device provided on the processing head.

4. The method according to claim 1, 2 or 3, characterized in that the Schac htel au s is made of an aging-resistant corrugated or solid cardboard.

5. folding blank for carrying out the method according to any one of claims 1 to 4, for folding boxes closed on all sides

- with a bottom, a lid, a front wall, a rear wall and two side walls,

with folding parts of the folding blank, by means of which the folding box can be closed without additional connecting means, characterized in that

that the bottom and / or lid and / or back and / or front wall of the folding box are at least double-walled,

- that the inwardly facing surfaces of the bottom, the lid, the front and rear walls and the side walls of the folding box have no abutting edges,

- that on each edge of the folding box there is a folded edge between two adjacent folded parts of the folded blank,

- That on at least one edge of the folding box on the folding edge a cut edge of one of the two folding parts forming the folding edge butts different folding part.

6. Folding blank for folding boxes closed on all sides according to claim 5, characterized in that

- That the folding blank (1) has a rectangular bottom part (2), to which a rectangular front part (3), a rectangular back part (4) and two rectangular side parts (5, 6) are connected along its sides,

- That on the two side parts (5, 6) each have a rectangular tab (7, 8) for reinforcing the rear wall, each a rectangular tab (9, 10) for reinforcing the Connect the front wall and a rectangular tab (11, 12) to reinforce the cover,

- That a cover part (13), and to the cover part (13) a front part (14) connects to the rear part, and

- That the front part (14) is connected to a further front part (15) and in turn a bottom part (16),

- That the two base parts (2, 16) together form a double-walled base,

- That the adjoining the side parts (5, 6) tabs (7, 8) to reinforce the rear wall together with the rear part (4) form a rear wall with three times the wall thickness,

- That the to the side parts (5, 6) adjoining tabs (9, 10) to reinforce the front wall together with the front parts (3, 14, 15) form a front wall with four times the wall thickness, and

- That the adjoining the side parts (5, 6) tabs (11, 12) to reinforce the lid together with the lid part (13) form a double-walled lid.

7. Folding blank for folding boxes closed on all sides according to claim 6, characterized in that

- That a slot (17) is present between the bottom part (2) and the front part (3) adjoining the bottom part (2) along the folded edge, and

- That the adjoining the cover part (13) front part (14) has a tab (18) which can be inserted into the slot (17).

8. folding blank for folding boxes closed on all sides according to claim 5, characterized in that

- That the folding blank (20) has a rectangular bottom part (21), on which along its sides a rectangular front part (22), a rectangular back part (23) and two rectangular side parts (24, 25),

- That in turn a front part (26) connects to the front part (22),

- That at the two side parts (24, 25) each have a rectangular tab (27, 28) to reinforce the rear wall and a rectangular tab (29, 30) to reinforce the front wall,

- That a cover part (31) adjoins the back part (23),

- That to the cover part (31) two side parts (32, 33) with tabs (34, 35) for reinforcing the front wall and a front part (36) and then in turn a front part (37),

- That the adjoining the side parts (24, 25) tabs (27, 28) to reinforce the rear wall together with the rear part (23) form a rear wall with double wall thickness,

- That the on the side parts (24, 25) of the bottom part (21) and the dei side parts (32, 33) of the cover part (31) adjoining tabs (29, 30, 34, 35) to reinforce the front wall together with the Front parts (22, 26) of the base part (21) and the front parts (36, 37) of the cover part (31) form a front wall with six times the wall thickness.

9. folding blank for folding boxes closed on all sides according to claim 5, characterized in that

- That the folding blank (46) has a rectangular bottom part (47) to which along its sides a rectangular front part (48), a rectangular back part (49) and two rectangular side parts (50, 51) connect,

- That on the two side parts (50, 51) each have a rectangular tab (52, 53) for reinforcing the front wall, each a square with the back part (49) of the bottom part (47) also connected tab (54, 55) to reinforce the rear wall and connect a further side part (56, 57) with a tab (58, 59) to reinforce the floor,

- That the front part (48) is connected to a further front part (60) and in turn a bottom part (61),

- That a cover part (62) connects to the rear part (49),

- That on the cover part (62) two with rectangular tabs (63, 64) provided for reinforcing the front wall side parts (65, 66) and in turn in each case a side part (67, 68) with a tab (69, 70) for reinforcement connect the lid,

- That a front part (71), then a second front part (72) and then a cover part (73) connect to the cover part (62),

- That the bottom parts (47, 61) together with the tabs (58, 59) to reinforce the bottom form a bottom with three times the wall thickness,

- That the lid parts (62, 73) together with the tabs (69, 70) to reinforce the lid form a lid with three times the wall thickness

- That the adjoining the side parts (50, 51, 65, 66) tabs (52, 53, 63, 64) to reinforce the front wall together with the front parts (48, 60, 71, 72) form a front wall with six times the wall thickness , and

- That the side parts (50, 51, 56, 57, 65, 66, 67, 68) together form side walls with four times the wall thickness.

10. Folding blank for folding boxes closed on all sides according to one of claims 5 to 9, characterized in that it consists of an aging-resistant corrugated or solid cardboard.