FI83858B - FOERFARANDE FOER FOERPACKNING AV OEVERLAONGA PAPPERS- OCH KARTONGRULLOR I OMSLAGSPAPPER. - Google Patents

Description

83858

METHOD OF PACKAGING EXTRA-LONG PAPER AND PAPERBOARD ROLLS IN WRAPPING PAPER

The present invention relates to a method of wrapping oversized rolls of paper and paperboard in wrapping paper by wrapping the first wrapping paper around the periphery of the roll paper so that one edge of the wrapping paper extends over the corresponding end of the roll 10, fold the overhanging edge against the roll end and wrap around the first wrapping paper such that the edge of the second wrapping paper away from the first wrapping paper extends over the corresponding end of the paper roll, and the overhanging edge is folded against the end of the paper roll.

The rolls of paper and board are packed in a web-wide wide wrapping wrapper. On machines currently in use, the maximum wrap width is usually of the order of 3.5 m.

20

Recently, there has been a need to make paper as an even wider web, which means that the rolls of paper to be packaged are correspondingly even longer. In this case, the usual wrapping paper widths are not sufficient for packing rolls 25 that are too long (up to 3.1 m). One possibility to eliminate the problem is to widen the packaging wrapper, for example, as presented in FI patent application 894705. On the other hand, the need for excessively long rolls is still so low that the construction of new equipment for packaging such rolls would incur unnecessary costs.

It is an object of the present invention to provide a simple method for wrapping oversized rolls of paper and board in wrapping paper, which method does not require new equipment investments and is therefore inexpensive to implement. The method according to the invention is characterized in that after the first wrapping paper is wrapped in place and its overhang is folded by the first folding device, the paper roll is moved axially in the direction of the end to which the first wrapping paper is wrapped 5 until one end of the roll paper and the other folding device line up.

A preferred embodiment of the method according to the invention is characterized in that the wrapping of the wrapping papers is carried out by a packaging device known per se, which also includes two wrapping devices for the edges of the wrapping paper.

Another preferred embodiment of the method according to the invention is characterized in that after the first wrapping paper is wrapped in place and the overhanging edge is folded by the first folding device, the paper roll is moved axially in the direction of the end where the first wrapping paper wraps. opposite.

20

The invention also achieves a very simple wrapping method for oversized paper rolls without expensive equipment investments.

In the following, the invention will be explained in detail by means of an example of a preferred embodiment with reference to the accompanying drawings, in which

Figure 1 is a front view of an oversized roll of paper 30 in a packaging station at the stage where the first wrapping paper is wrapped over the roll of paper.

Fig. 2 shows the same as Fig. 1, but in the step where the edge over the paper roll of the first wrapping paper is folded against the end of the paper roll.

i 3 83858

Figure 3 shows the same as the previous figures, but at the stage where the roll of paper has been moved in its axial direction to the left and the second wrapping paper has been wrapped on the roll.

Fig. 4 shows the same as the previous figures, but in the step in which the overhanging edge of the paper roll of the second wrapping paper is also folded against the corresponding end of the paper roll.

Figure 5 shows an end view of a roll of paper 10 packaged in accordance with the invention and a part of the packaging apparatus in a very reduced manner.

Figure 1 shows a paper, cardboard or similar roll 1 on which a first wrapping paper 2 is wrapped. Its edges 15 are, for clarity, indicated by reference numerals 3 and 4. The ends of the roll 1 are in turn marked by reference numerals 5 and 6. The length of the roll may be e.g. approx. 3.1 m. The width of the wrapping paper is smaller. Any plain paper roll wrapping paper can be used for this purpose. The first wrapping paper 2 20 is wound around the paper roll 1 so that the edge 3 comes somewhat, preferably about 20-30 cm above the end 5 of the paper roll 1. In this case, the second edge 4 of the wrapping paper 2 is clearly below the paper roll end 6. Wrapping paper can be wrapped around the roll. in a known manner, for example by rotating the roller 25 (Figure 5 in the direction of the arrow) and passing the end of the wrapping of the roll circumference, whereby the wrapping paper begins to rotate around the paper roll. When there is enough wrapping paper around the roll, the wrapping paper is cut off and the end of the wrapping paper is provided with a binder, for example 30 hot-melt glue, so that it adheres firmly.

The edge 3 extending over the end 5 of the wrapping paper 1 is folded (Fig. 2) against the end of the paper roll 5 by means of a device 7, 8 known per se. The arm 7 of the folding device is articulated at its lower end, allowing it to pivot so that the folding part, which may consist of a freely rotating wing member 8 (shown in detail in Fig. 5), comes against the wrapping paper at the paper roll end 5 and folds the edge 3 in a known manner. against the end 5 of the paper roll.

In the next step, shown in Fig. 3, the paper roll 1 is moved to the left when looking at the pattern, and the second wrapping paper 11 is wrapped on the paper roll as previously described. The edges of the wrapping paper 11 are denoted by reference numerals 12 and 13. The second wrapping paper is also wrapped 10 so that its edge 13 extends, for example, about 20-30 cm over the end 6 of the paper roll 1. Before the second wrapping paper is wrapped, a binder such as hot-melt adhesive is applied to the area of the first wrapping paper against which the second wrapping paper comes so that the first and second wrapping papers 2 and 11 15 adhere to each other and remain in place. Figure 4 shows a step in which the edge 13 of the second wrapping paper 11 is bent against the end 6 of the paper roll by means of the second folding device 9, 10. The structure of the folding device 9, 10 is substantially similar to that of the first folding device 7, 8 and it also functions in substantially the same way.

Figure 5 shows a roll of paper wrapped in wrapping paper in its axial direction as seen from the side of the head 6. In addition, Figure 5 shows a highly simplified second folding apparatus 9, 25, 10, whose rod 9 is articulated to the double-headed arrow shown in the pivotally to the base 14. The folding part forms the impeller 10, as discussed previously.

. .. Below the paper roll 1 there are round support rails 15 on which the paper roll is held. Further, a support rail 16 is provided on the front side 30 of the roll. The support rails 15 can be arranged in an adjustable direction in their longitudinal direction, so that the axial position of the paper roll can be adjusted as desired by means of them.

It will be apparent to those skilled in the art that the invention is not limited to the above exemplary embodiments, but may be varied within the scope of the appended claims. Thus, the computer program and other devices included in the control system with which the operation of the arrangement is implemented in practice will not be explained in more detail here. Such 5 matters are considered to be within the basic knowledge of a person skilled in the art. An embodiment has been described above in which the roll of paper is moved in its axial direction so that the ends of both wrapping papers passing over the edges of the roll of paper can be folded against the ends of the roll with an existing device. Equally possible is the option of moving the folding apparatus itself laterally.

Claims (3)

A method of packaging overlaid paper and cardboard rolls (1) with wrapping paper (2, 11), such that the first wrapping paper (2) is wrapped around the periphery of the paper roll (1), so that one edge (3) of the wrapping paper (2) is sufficient. over the corresponding end (5) of the paper roll (1) and this far edge is folded against the paper roll end (5), the second wrapping paper (11) is wound around the periphery of the paper roll (1) and partly the first wrapping paper (2), so that the edge ( 13) of the second wrapping paper (11) removed from the first wrapping paper (2) extends over the corresponding end (6) of the paper roll (1) and this overlying edge (13) folds towards the end (6) of the paper roll (1); characterized in that after the first wrapping paper has been wound into place and its overlying edge (3) has been folded with the first folding device (8), the paper roll (1) is moved in its axial direction in the direction of the end (5) on which the first the wrapping paper (2) has l or, alternatively, the folding system (8, 10) is moved with respect to the aforementioned moving direction of the paper roll in the opposite direction, until the other end (6) of the paper roll (1) and the second folding device (10) are adjacent to each other. Method according to claim 1, characterized in that the winding of the wrapping papers (2, 11) is carried out with a packing device (7, 8, 9, 10) known per se, which also includes two folding devices (8, 10) for edges. (3, 4, 12, 13) of the wrapping paper (2, 11). Method according to any of the preceding claims, characterized in that, on the first wrapping paper (2), binder is spread, e.g. hot-melt glue, in the area to which the other wrapping paper comes.