DE10127106B4 - Basic web of a packaging material made of paper, cardboard or cardboard - Google Patents

Abstract

subway (12) a packaging material (10) made of paper, cardboard or cardboard with a first end edge (13) and a perpendicular thereto second end edge (13a), wherein the base web (12) has an upper side (14) and a bottom (16), and in the bottom and top (16, 14) parallel to the first end edge (13) a plurality of depressions (24) are placed one behind the other, which on the respective Side opposite side form elevations (22), and the Wells (24) and the elevations (22) arranged alternately parallel to the second end edge (13a) are characterized in that the recesses (24) and the increases (22) semi-spherical are formed.

Description

The The invention relates to a base web of a packaging material paper, paperboard or cardboard according to the preamble of the claim 1 specified type.

Of the Use of packaging material is manifold. For example Products from the furniture industry and products from the automotive supplier industry by means of Packaging material from damage protected.

The Packaging material takes over essentially the following protection functions. On the one hand The packaging material provides the packaged product with protection against external damage mechanical damage, for example, scratching. On the other hand, the packaging material The packaged product shock absorbing padding protection to disposal, around the product before extensive damage, z. B. caused by impact load due to improper transport, to protect.

During the Protection against mechanical damage solely by wrapping the product in the packaging material is easily accessible, is for the protection against impact load a special design of the packaging material required.

The shock-absorbing Effect of the packaging material is due to special shaping of the Packaging material or parts of the packaging material reached.

in the The following will be the molded, shock absorbing part of the packaging material referred to as basic train. The basic course is again often with an upper and / or lower layer, for example made of paper, cardboard or cardboard covered. This process, connecting the basic train with other layers is also referred to as laminating.

ever After manufacturing process and shaping of the basic web are the known packaging materials differ or arise different Properties of the packaging materials.

So has e.g. the so-called corrugated cardboard a wavy embossed base course on. wavy means that alternately on the top and bottom of the base course increases and depressions that by unilateral coinage, for example only in the bottom, to be generated.

adversely in the corrugated board production, however, is the fact that the wavy embossed base course is not dimensionally stable. To keep the waveform of the basic orbit, must therefore immediately after the mechanical introduction of the Waveform be laminated.

Failing direct laminating after making the basic web, so a smoothing takes place or elongation the waves, d. H. the increases introduced into the basic course and the resulting depressions are formed back. hereby goes the damping property lost the packaging material. A wise use of Corrugated board without previous lamination is therefore not possible.

When Another disadvantage is the fact that a convolution the corrugated cardboard only parallel to those in the base web of the corrugated board present troughs possible is. Other folds of the material require a further work step. Around For example, transverse folds, so folds perpendicular to the troughs of To enable packaging material the packaging material must be adjusted in the direction of the desired cross folding be grooved or perforated, d. h., by printing, the Waves at the point at which the transverse folding is to take place, squeezed become.

When alternative product to corrugated board is another packaging material known. This packaging material has a base web, the with a rectangular embossed pattern introduced from the underside is provided.

The embossed pattern is in such a way that in the bottom of the base web rectangular Depressions impressed are correspondingly rectangular on the top of the base course Make elevations. This type of basic course with the one-sided imprinted rectangular embossed pattern is also referred to as embossed Paper designates.

In the weekly for Papierfabrikation 21, 1976, page 824 and page 826-827 are different embossing methods for the inculcate of embossed pattern or for the production of embossed Paper revealed. Accordingly, are for the embossing of paper and cardboard the rapport, the wild and Union imprint known Embossing process.

The embossed Paper has opposite The corrugated board has the advantage that an elongation or a smoothing of Base train does not take place and thus the Kaschiervorgang delayed can be done or laminating is not mandatory.

The embossed paper continues to prove itself as advantageous because both a transverse and a longitudinal folding without additional measures is easy to carry out.

adversely However, the fact is that the damping characteristic of the embossed paper less than that of the corrugated board.

In the GB 720,695 A a paper pulp packaging material for egg packaging is disclosed. For receiving the eggs, the packaging material formed from pulp has a plurality of bowl-shaped depressions in its lower and upper sides. However, a packaging material formed from pulp has the disadvantage that folding of the packaging material is almost impossible without damaging the packaging material.

From the DE 822 226 B is a padded wrapping paper of several alternately stacked, glued together smooth and semi-embossed paper layers known. The wrapping paper is characterized by the fact that smooth paper layers are provided with a strip-like gumming corresponding to geometric figures and combined with the embossed paper layers under embossing pressure. A disadvantage here proves that the arranged between the embossed paper layers smooth paper layer causes a reduction of the damping properties of the packaging material.

Of the Invention is based on the object, a basic trajectory of a packaging material from paper, cardboard or cardboard such that under Avoiding the disadvantages mentioned the damping properties of corrugated board are almost maintained.

These The object is achieved by the characterizing features of claim 1 solved in conjunction with its generic features.

Of the Invention is based on the finding that the arrangement and Shape of the mechanically generated depressions and the resulting increases one significant influence on the damping properties and on the dimensional stability of Exercise basic train.

To The invention therefore is in a basic trajectory of a packaging material made of paper, cardboard or cardboard both in the bottom and as well in the top parallel to a first end edge of the base web several semi-spherical ones Depressions placed one behind the other, those on the respective Side opposite side form semi-spherical elevations. Parallel to a perpendicular to the first end edge arranged second end edge are the semi-spherical ones Elevations / depressions arranged alternately.

Preferably have the semi-spherical Recesses / increases doing a ball radius of at least 2mm and at most 5mm.

The inventive basic train has opposite the previously known basic courses of packaging materials several Advantages: Firstly, the basic web according to the invention has due to the semi-spherical elevations / depressions across from the embossed paper known from the prior art much better damping properties because, as already mentioned, at the embossed Paper the indentation only on the bottom and the corresponding ones associated increases are introduced only on the top.

Farther is through the spherical Training the depressions in the basic train now not just one Transverse folding and / or longitudinal folding, as so far also in the embossed Paper feasible was, possible, but also a diagonal folding is executable without additional measures.

The Arrangement of the semi-spherical Recesses / increases also prevents unwanted elongation or smoothing of the Basic course, so that the basic course is dimensionally stable.

Around a higher one To ensure inherent rigidity of the packaging material is preferably the basic trajectory with one essentially covering the basic trajectory Layer of paper, cardboard or cardboard connected, at least the increase one side of the basic web connected to the situation - laminated - becomes. As already mentioned, has the basic web according to the invention a high dimensional stability on. Therefore, the lamination can optionally only one layer or be carried out with two layers.

According to one another embodiment the invention consists of the base web covering layer of a a foam containing material. Depending on the requirement to the packaging material is the lamination of the base web with a foam-containing material helpful, for example better protection of the packaged product from scouring or to ensure the same.

The semi-spherical Recesses / increases also have other, laminating benefits.

Should for example, when embossed Paper lays the page with the one-sided embossed rectangular ridges be so between the rectangular elevations and the applied further position a partially flat - according to the Embossed pattern - trained Supporting surface. At the Kaschiervorgang thus takes place a bonding of this bearing surface. One too strong bonding means at the same time that the damping properties and the flexibility of the packaging material are adversely affected. In the present semi-spherical formation the raises this circumstance does not occur because the bearing surface between the base web and the other, to be laminated layer is punctiform. Due to the punctate Bonding occur with no loss of regard the damping properties and flexibility of the packaging material.

Preferably become the semi-spherical ones Depressions by embossing made in the respective page. The impression of the depressions proves as advantageous as it is cost effective and perform quickly is.

There as already stated, the basic trajectory is dimensionally stable, the laminating process can either directly after embossing, but also be performed at a time interval for embossing. Due to the dimensional stability but it is also possible for the basic train to do without a lamination.

The inculcate the semi-spherical Deepening in the basement can be both in the dry as well done in the wet state.

at an imprint the base web in the wet state, the base web is hereby preferably before embossing moistened and optionally reduced to the desired moisture for embossing.

The actual embossing the basic course takes place with a residual moisture of 6 - 8%.

In order to achieve optimum damping properties of the base web, the paper of the base web in particular has a paper weight of at least 80 g / m ² .

Further Advantages, features and applications of the present Invention of a basic web of paper packaging material, Cardboard or cardboard arise from the following description in connection with the embodiment shown in the drawing.

The Invention will be described below with reference to the drawing Embodiment described in more detail.

In the drawing means:

1 a schematic exploded perspective view of a packaging material according to the invention;

2 a schematic sectional view of the packaging material 1 ,

In 1 is a schematic perspective view of a packaging material 10 shown. The packaging material 10 has a basic train 12 with a first end edge 13 and a second end edge disposed perpendicular thereto 13a and a top 14 and a bottom 16 on.

On the top 14 is another location, the upper location 18 , and accordingly on the bottom 16 the lower layer 20 applied.

The basic train 12 points to the top 14 and on the bottom 16 both semi-spherical elevations 22 and semi-spherical depressions 24 on. For this purpose are parallel to the first end edge 13 in the top and bottom 14 . 16 several depressions 24 one behind the other in the basic train 12 introduced the corresponding increases 22 on the opposite side. Parallel to the second end edge 13a the semi-spherical elevations / depressions are arranged alternately, cf. 1 The upper layer 18 and the lower layer 20 are each only punctiform with the semi-spherical elevations 22 on the top 14 and the bottom 16 bonded.

The application of these additional layers 18 . 20 on the basic train 12 is also referred to as laminating.

The lamination takes place in the form that after introduction of the semi-spherical depressions 24 and the semi-spherical elevations 22 into the basic train 12 , This is passed over a glue roller. Subsequently, the upper layer 18 and the lower layer 20 on the basic train 12 applied. Due to the semi-spherical design of the elevations 22 Only a selective gluing of the base web takes place 12 and thus only a selective bonding between the base web 12 and the other layers 12 . 14 ,

The lamination of the basic web 12 with the upper layer 18 and the lower layer 20 serves in the In this case, the inherent rigidity of the packaging material 10 to increase.

The lamination is, however, for the functionality of the packaging material according to the invention 10 not mandatory.

For clarity, is in 1 the semi-spherical design of the individual elevations 22 and the individual wells 24 not explicitly shown.

The semi-spherical design of the elevations 22 and depressions 24 comes from 2 out. In 2 is the basic train 12 , the upper position 18 as well as the lower layer 20 along the line AA through the semi-spherical elevations 22 and depressions 24 shown cut.

The raises 22 and depressions 24 are introduced according to the invention by embossing in the base web.

For memorizing the depressions 24 in the base web this is guided over two intermeshing embossing rollers. The wells 24 in the top 14 the base web are thereby by an upper embossing roll and the depressions 24 in the bottom 16 the basic train 12 generated by a lower embossing roll. The raises 22 Accordingly, arise on the opposite side of the basic train 12 in which the depressions 24 were impressed.

In the present embodiment is a so-called lightweight packaging material 10 which is used for example for the packaging of products from the metal and woodworking industry, vehicle industry and their supply industry or the like, and has a paper weight of about 200 g / m ² .

Particularly advantageous proves in the present packaging material 10 the property that due to the alternating arrangement and the semi-spherical configuration of the elevations 22 and depressions 24 in the basic train 12 , a simple folding of the packaging material 10 is guaranteed.

Thus, a fold is parallel to the first end edge in a simple manner 28 , a fold parallel to the second end edge 26 and a fold diagonally to the first end edge 30 possible. Additional measures are not required.

The invention is characterized in that by the introduction of the elevations 22 and depressions 24 both on the top 14 as well as on the bottom 16 the basic train 12 in a simple way the production of a packaging material 10 With damping properties similar to the corrugated board is made possible, this packaging material 10 However, due to its higher flexibility has a wider range of applications.

10

packing material

12

subway

13

first terminal edge

13a

second terminal edge

14

top

16

bottom

18

upper location

20

lower location

22

increases

24

wells

26

fold line parallel to the second end edge

28

fold line parallel to the first end edge

30

fold line diagonally to the first end edge

Claims (5)

Basic train ( 12 ) of a packaging material ( 10 ) of paper, paperboard or cardboard having a first end edge ( 13 ) and a perpendicular thereto arranged second end edge ( 13a ), where the basic web ( 12 ) an upper side ( 14 ) and a bottom ( 16 ), and in the lower and upper side ( 16 . 14 ) parallel to the first end edge ( 13 ) several depressions ( 24 ) are introduced in succession, which on the opposite side of each page increases ( 22 ), and the depressions ( 24 ) and the elevations ( 22 ) parallel to the second end edge ( 13a ) are arranged alternately, characterized in that the depressions ( 24 ) and the elevations ( 22 ) are formed semi-spherical. Basic train ( 12 ) of a packaging material according to claim 1, characterized in that the spherical radius of the recesses ( 24 ) and the increases ( 22 ) is at least 2mm and at most 5mm. Basic train ( 12 ) of a packaging material according to claim 1 or 2, characterized in that the top and / or bottom ( 14 . 16 ) of the basic web ( 12 ) with a cover layer ( 18 . 20 ) is laminated from paper, cardboard, cardboard or a foam containing material. Basic train ( 12 ) of a packaging material according to any one of the preceding claims, characterized characterized in that the semi-spherical depressions ( 24 ) in the lower and upper side ( 16 . 14 ) of the basic web ( 12 ) are imprinted. Basic train ( 12 ) of a packaging material according to one of the preceding claims, characterized in that the paper of the base web ( 12 ) has a paper weight of at least 80 g / m ² .