EP0934818A2 - Sheet-like material with at least two layers and an embossed pattern - Google Patents

Sheet-like material with at least two layers and an embossed pattern Download PDF

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Publication number
EP0934818A2
EP0934818A2 EP99101632A EP99101632A EP0934818A2 EP 0934818 A2 EP0934818 A2 EP 0934818A2 EP 99101632 A EP99101632 A EP 99101632A EP 99101632 A EP99101632 A EP 99101632A EP 0934818 A2 EP0934818 A2 EP 0934818A2
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EP
European Patent Office
Prior art keywords
areas
layers
embossing
sheet material
sheet
Prior art date
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Application number
EP99101632A
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German (de)
French (fr)
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EP0934818A3 (en
Inventor
Kilian Saueressig
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Saueressig GmbH and Co KG
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Saueressig GmbH and Co KG
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Publication of EP0934818A2 publication Critical patent/EP0934818A2/en
Publication of EP0934818A3 publication Critical patent/EP0934818A3/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/02—Attaching together sheets, strips or webs; Reinforcing edges by crimping or slotting or perforating
    • B31F5/022—Attaching together sheets, strips or webs; Reinforcing edges by crimping or slotting or perforating using a rotary tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B31F2201/0733—Pattern
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0741—Roller cooperating with a non-even counter roller
    • B31F2201/0743—Roller cooperating with a non-even counter roller having a matching profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0741—Roller cooperating with a non-even counter roller
    • B31F2201/0748—Roller cooperating with a non-even counter roller having a dissimilar profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0758—Characteristics of the embossed product
    • B31F2201/0761—Multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0789—Joining plies without adhesive

Definitions

  • the invention relates to a sheet or sheet Material from at least two layers, with an embossed pattern, that from a multitude of individual, the layers across Layer deforming and connecting with each other There are impressions, which are each based on the two outer layers sunk inwards Minting areas that are at least partially transverse to the layer direction overlap, are formed.
  • a web-like material consisting of several layers is conventionally connected by the layers between two rollers are brought, of which at least a the impressions in the sheet material brings, with these impressions usually through Positive locking, but also through chemical-physical measures, connection points are established. That so The resulting web-like material can then, if necessary be treated further, e.g. B. to the known hygiene tissue get cut.
  • FIG. 4 shows a sectional view through a cellulose cloth 40 which consists of four webs 41, 42, 43, 44, which are connected to one another at the embossing 45 by the wild embossing process.
  • the problem additionally arises that the individual layers 41, 42, 43, 44 have different flow paths 47, 47 must travel, as indicated for example for the lanes 41 and 44, which results in a different indentation of the individual layers.
  • the embossing areas at least are partially flat areas that are transverse to Layer direction with at least one more each overlap the area at least partially.
  • the connection the individual layers takes place in the invention may differ due to small overlapping areas large flat areas by appropriate on the embossing surfaces provided for the material be abandoned.
  • the embossing surfaces and thus the flat ones Areas can be designed practically as desired, so that on different designs of the web to be embossed Material consideration can be taken. So far with surface embossing no permanent connection of layers a sheet material has been achieved. Only with the overlapping areas provided according to the invention can an embossed surface structure can be achieved, with the most diverse when the layers are well together Decors are possible. In addition, the different Flow path of the individual webs through appropriate arrangement of the flat areas minimized.
  • the size and / or shape of the flat areas depending selected from the flow behavior of the layer material so that a Tear the layers in the peripheral areas of the flat Areas is avoided.
  • Strip areas of equal width cover the total area the overlapping areas of the flat areas in the essentially constant. This will make it even Flow behavior achieved in all layers. To do this are preferred on the two embossing forms which may differ large embossing areas arranged so that they can be printed on each Embossing mold are distributed in approximately the same proportions.
  • the layers of the sheet or sheet material can consist of plastic or cellulose, and at least the Embossing areas can be provided with an adhesive.
  • Figure 1 is a greatly enlarged schematic Cut a hygienic cellulose tissue crosswise shown for the layer direction between two embossing dies 19 and 20.
  • the hygiene tissue consists of four layers 15, 16, 17 and 18 lying one on top of the other, between the dies 19 and 20 are drawn.
  • the Embossing mold 19 has a large embossing surface 24, the three small stamping surfaces 25, 26 and 27 on the stamping mold 20 face each other. With a certain contact pressure, the large embossing surface 24 on the four layers 15, 16, 17 and 18 and created by the participation of the three small stamping surfaces 25, 26 and 27 areas overlapping as connecting points, designated 22, 28, 29 and 30 on the Locations.
  • the overlapping areas 22, 28, 29 and 30 lie thereby deeper than the raised surface 23 or 23 'of the Cellulose cloth.
  • layers 16 and 17 must layers 15 and 18 cover a longer flow path.
  • the resulting different layer indentation is indicated with the dimension arrow 21 or 21 '.
  • the Flow behavior of the individual layers 15, 16, 17 and 18 to one another and thus the layer feed 21 or 21 ' can optimize in the design of the embossing surfaces so that can be prevented that the layers on or next to the Tear off or tear off embossing surfaces, for example at 35.
  • embossing surface 24 clearly recognizable by the layers facing her 15 and 16 have a significantly smaller flow path as if instead of the embossing surface 24 several embossing knobs, as according to the methods of the prior art, would be provided.
  • the contact surfaces have proven to be optimal 36 and 37 of embossing molds, schematically in Figure 3 shown in the axial direction of the dies to design that along the contact surface 36, 37 of the two stamping dies, which are usually stamping cylinders, is approximately the same at all possible positions.
  • the degree of crushing can predetermined by the distance 34 of the two embossing dies become. This specification depends on the connection principle to be hit. When connecting the layers through Form-fit, the distance 34 is usually set smaller than with a chemical-physical compound, for example an adhesive connection using adhesive.
  • FIG. 1 There is a schematic plan view of a section a multi-layer cellulose cloth 31 shown, which means large and small embossing surfaces was produced.
  • the dash-dotted line 32 indicates the contour that through a large embossing area, such as the embossing area 24 in Figure 1, is caused by the contour of smaller Stamping surfaces, such as 25, 26, 27 in Figure 1, evoked Embossing is by means of the dash-dotted line 33 shown.
  • sheet-like materials for example plastic films, cellulose webs or the like by chemical and / or physical application or to emboss a positive connection.
  • Structures of flat character are generated.
  • the embossing points are only arched inwards, so that the thickness of the embossed material depends only on the thickness of the individual layers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)

Abstract

A web- or sheet-like material consists of ≥ 2 layers and has an embossed pattern which comprises a number of separate embossed points. The embossed areas are, at least in part, flat areas (24,25,26,27) which each overlap, at least in part, with ≥ 1 additional flat area. The shape and/or the size is selected in such a way that a tearing of the layers in the peripheral sections of the flat areas is avoided.

Description

Die Erfindung betrifft ein bahn- oder blattförmiges Material aus mindestens zwei Lagen, mit einem Prägemuster, das aus einer Vielzahl von einzelnen, die Lagen quer zur Lagenrichtung deformierenden und miteinander verbindenden Einprägungen besteht, die durch jeweils ausgehend von den beiden außenliegenden Lagen nach innen versenkt liegende Prägegebiete, die quer zur Lagenrichtung zumindest teilweise überlappen, gebildet sind.The invention relates to a sheet or sheet Material from at least two layers, with an embossed pattern, that from a multitude of individual, the layers across Layer deforming and connecting with each other There are impressions, which are each based on the two outer layers sunk inwards Minting areas that are at least partially transverse to the layer direction overlap, are formed.

Ein aus mehreren Lagen bestehendes bahnförmiges Material wird herkömmlicherweise verbunden, indem die Lagen zwischen zwei Walzen gebracht werden, von denen zumindestens eine die Einprägungen in das bahnförmige Material ein bringt, wobei an diesen Einprägungen in der Regel durch Formschluß, aber auch durch chemisch-physikalische Maßnahmen, verbindungspunkte hergestellt werden. Das so entstandene bahnförmige Material kann dann gegebenenfalls weiterbehandelt werden, z. B. zu den bekannten Hygiene-Zellstofftüchern geschnitten werden.A web-like material consisting of several layers is conventionally connected by the layers between two rollers are brought, of which at least a the impressions in the sheet material brings, with these impressions usually through Positive locking, but also through chemical-physical measures, connection points are established. That so The resulting web-like material can then, if necessary be treated further, e.g. B. to the known hygiene tissue get cut.

Bei den Prägeverfahren unterscheidet man die Wildprägung, bei der eine Prägewalze gegen eine glatte Gegenwalze läuft, die gegebenenfalls eine elastische Beschichtung aufweist. Bei der Unionprägung laufen eine Matritzenwalze und eine Patritzenwalze gegeneinander und erzeugen durch die entstehende Prägung eine Verbindung der bahnförmigen Materialien. Sowohl bei der Wild- als auch bei der Unionprägung sind die Einprägungen auf der einen Seite des bahnförmigen Materials konkav nach innen gerichtet und stehen von der anderen Seite konvex nach außen hervor. Diese konvex erhabenen Stellen verleihen dem geprägten Material einen rauhen Charakter und sollten daher vermieden werden.A distinction is made between the wild embossing processes, where an embossing roller against a smooth counter roller runs, which may have an elastic coating having. A matrix roller runs in the Union embossing and a patroller roller against each other and generate by the resulting embossing connects the web-shaped Materials. Both in the wild as well as in the Union coinage are the impressions on one side of the web-shaped material directed inwards and concave protrude convexly from the other side. These convex raised areas give the embossed Material have a rough character and should therefore be avoided become.

In Figur 4 ist eine Schnittansicht durch ein Zellstofftuch 40 dargestellt, das aus vier Bahnen 41, 42, 43, 44 besteht, welche an der Einprägung 45 durch das Wildprägeverfahren miteinander verbunden sind. Neben dem schon erwähnten Hervortreten einer konkaven Erhebung aus der Oberfläche 46 der Lage 44 tritt zusätzlich das Problem auf, daß die einzelnen Lagen 41, 42, 43, 44 unterschiedliche Fließwege 47, 47

Figure 00020001
zurücklegen müssen, wie beispielsweise für die Bahnen 41 und 44 angegeben, was einen unterschiedlichen Einzug der einzelnen Lagen nach sich zieht.FIG. 4 shows a sectional view through a cellulose cloth 40 which consists of four webs 41, 42, 43, 44, which are connected to one another at the embossing 45 by the wild embossing process. In addition to the already mentioned emergence of a concave elevation from the surface 46 of the layer 44, the problem additionally arises that the individual layers 41, 42, 43, 44 have different flow paths 47, 47
Figure 00020001
must travel, as indicated for example for the lanes 41 and 44, which results in a different indentation of the individual layers.

Das Problem der konkav erhabenen Prägepunkte wird bei dem in der DE 94 06 026 U1 offenbarten Kopf-auf-Kopf-Prägeverfahren dadurch gelöst, daß aus den gegenüberstehenden Prägewalzen erhabene Prägenoppen ausgebildet sind, welche auf den Lagen beispielsweise eines Zellstofftuches 50, wie in Figur 5 dargestellt, konkav nach innen gewölbte Prägepunkte 56 bilden, die quer zur Lagerichtung miteinander fluchten. In den Bodenbereichen dieser Prägepunkte 56 werden die Lagen 51, 52, 53, 54 des bahnförmigen Materials durch die Prägewirkung miteinander verbunden. Dieses Verfahren gibt dem bahnförmigen Material auf beiden Seiten ein glattes Aussehen. Weiterhin bestehen bleibt allerdings das Problem der unterschiedlichen Fließstrecken zwischen den einzelnen Lagen, wie es bei dem in Figur 5 dargestellten Zellstofftuch 50 beispielsweise für die Bahnen 51 und 54 durch 55 bzw. 55' angegeben ist.The problem of the concave raised embossing points is with the head-to-head embossing processes disclosed in DE 94 06 026 U1 solved in that from the opposing embossing rollers raised embossed knobs are formed on the layers of, for example, a cellulose cloth 50, as in Figure 5 shown, concave stamping points curved inwards 56 form that with each other transversely to the position swear. In the bottom areas of these embossing points 56 the layers 51, 52, 53, 54 of the sheet material connected by the embossing effect. This method gives the sheet material on both sides a smooth look. Still remains the problem of different flow paths between the individual layers, as is shown in FIG Cellulose tissue 50, for example for the webs 51 and 54 is indicated by 55 and 55 ', respectively.

Die mit Prägepunkten arbeitenden Verfahren schränken die optische Gestaltung der Oberflächenstruktur des bahn- oder blattförmigen Materials stark ein.The processes using stamping points limit the optical design of the surface structure of the train or sheet material strongly.

Es ist die Aufgabe der vorliegenden Erfindung, ein bahn- oder blattförmiges Material zur Verfügung zu stellen, bei dem die einzelnen Lagen durch Prägen verbunden werden, wobei eine vielfältige Gestaltung der Oberflächen bei sicherem Zusammenhalt der Lagen möglich sein soll.It is the object of the present invention, a web or to provide sheet material at to which the individual layers are connected by embossing, with a diverse design of the surfaces secure cohesion of the layers should be possible.

Diese Aufgabe wird durch das bahn- oder blattförmige Material nach Anspruch 1 gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.This task is accomplished by the sheet or sheet material solved according to claim 1. Advantageous configurations are the subject of the subclaims.

Erfindungsgemäß ist vorgesehen, daß die Prägegebiete zumindest teilweise flächige Gebiete sind, die quer zur Lagenrichtung jeweils mit mindestens einem weiteren flächigen Gebiet zumindest teilweise überlappen. Die Verbindung der einzelnen Lagen erfolgt bei der Erfindung durch kleine überlappende Bereiche gegebenenfalls verschieden großer flächiger Gebiete, die durch entsprechende auf den Prägeformen vorgesehenen Prägeflächen dem Material aufgegeben werden. Die Prägeflächen und damit die flächigen Gebiete sind dabei praktisch beliebig gestaltbar, so daß auf unterschiedliche Designs des zu prägenden bahnförmigen Materials Rücksicht genommen werden kann. Bisher ist mit Flächenprägungen keine dauerhafte Verbindung von Lagen eines bahnförmigen Materials erreicht worden. Erst mit den erfindungsgemäß vorgesehenen überlappenden Bereichen kann eine flächen-geprägte Oberflächenstruktur erreicht werden, bei der bei gutem Zusammenhalt der Lagen die untschiedlichsten Dekore möglich sind. Zudem wird der unterschiedliche Fließweg der einzelnen Bahnen durch zweckmäßige Anordnung der flächigen Gebiete minimiert.According to the invention it is provided that the embossing areas at least are partially flat areas that are transverse to Layer direction with at least one more each overlap the area at least partially. The connection the individual layers takes place in the invention may differ due to small overlapping areas large flat areas by appropriate on the embossing surfaces provided for the material be abandoned. The embossing surfaces and thus the flat ones Areas can be designed practically as desired, so that on different designs of the web to be embossed Material consideration can be taken. So far with surface embossing no permanent connection of layers a sheet material has been achieved. Only with the overlapping areas provided according to the invention can an embossed surface structure can be achieved, with the most diverse when the layers are well together Decors are possible. In addition, the different Flow path of the individual webs through appropriate arrangement of the flat areas minimized.

Nach einer bevorzugten Ausführungsform der Erfindung ist die Größe und/oder die Form der flächigen Gebiete abhängig vom Fließverhalten des Lagenmaterials so gewählt, daß ein Einreißen der Lagen in den Umfangsbereichen der flächigen Gebiete vermieden wird.According to a preferred embodiment of the invention the size and / or shape of the flat areas depending selected from the flow behavior of the layer material so that a Tear the layers in the peripheral areas of the flat Areas is avoided.

Weiter vorteilhaft ist in quer über das Material verlaufenden Streifenbereichen gleicher Breite die Gesamtfläche der überlappenden Bereiche der flächigen Gebiete im wesentlichen konstant. Hierdurch wird ein gleichmäßiges Fließverhalten aller Lagen erreicht. Dazu sind bevorzugt auf den beiden Prägeformen die gegebenenfalls unterschiedlich großen Prägeflächen so angeordnet, daß sie auf jeder Prägeform zu etwa gleichen Flächenanteilen verteilt sind.Another advantage is that extending across the material Strip areas of equal width cover the total area the overlapping areas of the flat areas in the essentially constant. This will make it even Flow behavior achieved in all layers. To do this are preferred on the two embossing forms which may differ large embossing areas arranged so that they can be printed on each Embossing mold are distributed in approximately the same proportions.

Die Lagen des bahn- oder blattförmigen Materials können aus Kunststoff oder Zellstoff bestehen, und zumindest die Prägegebiete können mit einem Klebemittel versehen sein.The layers of the sheet or sheet material can consist of plastic or cellulose, and at least the Embossing areas can be provided with an adhesive.

Im folgenden soll die Erfindung anhand der Zeichnung durch Beispiele näher erläutert werden. Dabei zeigt:

Figur 1
einen stark vergrößerten schematischen Schnitt quer zur Lagenrichtung durch ein Hygiene-Zellstofftuch mit Prägeformen gemäß der vorliegenden Erfindung;
Figur 2
eine Draufsicht auf mehrere Hygiene-Zellstoffbahnen nach der Prägung mit großen und kleinen flächigen Gebieten;
Figur 3
eine schematische Darstellung von Berührungsflächen bei Prägeformen, wie Prägezylindern, die mit Prägeflächen gemäß der Erfindung versehen sind;
Figur 4
eine Schnittansicht ähnlich der Figur 1 für ein Hygiene-Zellstofftuch, das durch ein Wildprägeverfahren hergestellt ist; und
Figur 5
eine weitere Schnittansicht eines Hygiene-Zellstofftuches, das sich durch die Kopfauf-Kopf-Prägung ergibt.
In the following, the invention will be explained in more detail with reference to the drawing by means of examples. It shows:
Figure 1
a greatly enlarged schematic section transverse to the layer direction through a hygiene tissue with embossing molds according to the present invention;
Figure 2
a plan view of several hygienic cellulose webs after embossing with large and small flat areas;
Figure 3
is a schematic representation of contact surfaces in embossing molds, such as embossing cylinders, which are provided with embossing surfaces according to the invention;
Figure 4
a sectional view similar to Figure 1 for a hygiene tissue made by a wild embossing process; and
Figure 5
another sectional view of a hygiene tissue, which results from the head-to-head embossing.

In Figur 1 ist in einem stark vergrößerten schematischen Schnitt eine Hygiene-Zellstofftuch ausschnittsweise quer zur Lagenrichtung zwischen zwei Prägeformen 19 und 20 dargestellt. Das Hygiene-Zellstofftuch besteht dabei aus vier aufeinanderliegenden Lagen 15, 16, 17 und 18, die zwischen die Prägeformen 19 und 20 gezogen werden. Dabei weist die Prägeform 19 eine große Prägefläche 24 auf, der drei kleine Prägeflächen 25, 26 und 27 auf der Prägeform 20 gegenüberstehen. Bei einem gewissen Anpreßdruck wirkt die große Prägefläche 24 auf die vier Lagen 15, 16, 17 und 18 und erzeugt durch Mitwirkung der drei kleinen Prägeflächen 25, 26 und 27 als Verbindungsstellen überlappende Bereiche, die mit 22, 28, 29 und 30 bezeichnet sind, auf den Lagen. Die überlappenden Bereiche 22, 28, 29 und 30 liegen dabei tiefer als die erhabene Oberfläche 23 bzw. 23' des Zellstofftuches. Im Vergleich zu den Lagen 16 und 17 müssen die Lagen 15 und 18 einen längeren Fließweg zurücklegen. Der daraus resultierende unterschiedliche Lageneinzug ist mit dem Maßpfeil 21 bzw. 21' bezeichnet. Das Fließverhalten der einzelnen Lagen 15, 16, 17 und 18 zueinander und damit der Lageneinzug 21 bzw. 21' lassen sich bei der Gestaltung der Prägeflächen optimieren, so daß verhindert werden kann, daß die Lagen auf oder neben den Prägeflächen, beispielsweise bei 35, ab- oder einreißen. Dieser positive Effekt ist bei der Prägefläche 24 besonders deutlich erkennbar, an der die ihr zugewandten Lagen 15 und 16 einen deutlich geringeren Fließweg zurücklegen müssen, als wenn anstelle der Prägefläche 24 mehrere Prägenoppen, wie nach den Verfahren des Standes der Technik, vorgesehen wären. Je gleichmäßiger die Flächenpressung auf den überlappenden Bereichen, wie 22, 28, 29, 30, der flächigen Gebiete bzw. der Prägeflächen, wie 24, 25, 26, 27, erfolgt, desto mehr kann die Lagenhaftung verbessert werden. Es hat sich als optimal herausgestellt, die Berührungsflächen 36 und 37 von Prägeformen, in Figur 3 schematisch dargestellt, in axialer Richtung der Prägeformen so zu gestalten, daß entlang der Berührungsfläche 36, 37 der beiden Prägeformen, die in der Regel Prägezylinder sind, bei allen ihren möglichen Stellungen in etwa gleich ist. Dies bedeutet eine gleichmäßige Flächenpressung bei den einzelnen Projektionsebenen 38 und 39, die durch die Prägeflächen gebildet werden und somit eine gleichmäßige Verquetschung der einzelnen Lagen, da vermieden wird, daß einige verprägte Flächen zu sehr, andere wiederum nur wenig verquetscht werden. Der Grad der Verquetschung kann durch den Abstand 34 der beiden Prägeformen vorgegeben werden. Diese Vorgabe wird abhängig vom Verbindungsprinzip getroffen werden. Bei einer Verbindung der Lagen durch Formschluß wird der Abstand 34 in der Regel kleiner eingestellt als bei einer chemisch-physikalischen Verbindung, beispielsweise einer Adhäsiv-Verbindung mittels Klebstoff. In Figure 1 is a greatly enlarged schematic Cut a hygienic cellulose tissue crosswise shown for the layer direction between two embossing dies 19 and 20. The hygiene tissue consists of four layers 15, 16, 17 and 18 lying one on top of the other, between the dies 19 and 20 are drawn. The Embossing mold 19 has a large embossing surface 24, the three small stamping surfaces 25, 26 and 27 on the stamping mold 20 face each other. With a certain contact pressure, the large embossing surface 24 on the four layers 15, 16, 17 and 18 and created by the participation of the three small stamping surfaces 25, 26 and 27 areas overlapping as connecting points, designated 22, 28, 29 and 30 on the Locations. The overlapping areas 22, 28, 29 and 30 lie thereby deeper than the raised surface 23 or 23 'of the Cellulose cloth. Compared to layers 16 and 17 must layers 15 and 18 cover a longer flow path. The resulting different layer indentation is indicated with the dimension arrow 21 or 21 '. The Flow behavior of the individual layers 15, 16, 17 and 18 to one another and thus the layer feed 21 or 21 'can optimize in the design of the embossing surfaces so that can be prevented that the layers on or next to the Tear off or tear off embossing surfaces, for example at 35. This positive effect is special with the embossing surface 24 clearly recognizable by the layers facing her 15 and 16 have a significantly smaller flow path as if instead of the embossing surface 24 several embossing knobs, as according to the methods of the prior art, would be provided. The more even the surface pressure is the overlapping areas such as 22, 28, 29, 30, the flat areas or the embossing areas, such as 24, 25, 26, 27, the more the layer adhesion can be improved become. The contact surfaces have proven to be optimal 36 and 37 of embossing molds, schematically in Figure 3 shown in the axial direction of the dies to design that along the contact surface 36, 37 of the two stamping dies, which are usually stamping cylinders, is approximately the same at all possible positions. This means an even surface pressure on the individual projection planes 38 and 39 through the Embossing surfaces are formed and thus an even one Squeezing the individual layers, since it is avoided that some embossed surfaces too much, others only little to be squeezed. The degree of crushing can predetermined by the distance 34 of the two embossing dies become. This specification depends on the connection principle to be hit. When connecting the layers through Form-fit, the distance 34 is usually set smaller than with a chemical-physical compound, for example an adhesive connection using adhesive.

Die oben angesprochene Optimierung erlaubt dennoch eine freie Gestaltung der Prägeflächen, mit denen ein flächigeres Aussehen des zu prägenden Materials erzielt wird, wie beispielsweise der Figur 2 entnommen werden kann. Dort ist eine schematische Draufsicht auf einen Ausschnitt eines mehrlagigen Zellstofftuches 31 dargestellt, das mittels großer und kleiner Prägeflächen hergestellt wurde. Die strichpunktierte Linie 32 gibt die Kontur an, die durch eine große Prägefläche, wie die Prägefläche 24 in Figur 1, hervorgerufen ist, die Kontur der durch kleinere Prägeflächen, wie 25, 26, 27 in Figur 1, hervorgerufenen Einprägungen ist mittels der strichpunktierten Linie 33 dargestellt.The optimization mentioned above nevertheless allows one free design of the embossing surfaces, with which a more flat Appearance of the material to be embossed is achieved as can be seen, for example, in FIG. There is a schematic plan view of a section a multi-layer cellulose cloth 31 shown, which means large and small embossing surfaces was produced. The dash-dotted line 32 indicates the contour that through a large embossing area, such as the embossing area 24 in Figure 1, is caused by the contour of smaller Stamping surfaces, such as 25, 26, 27 in Figure 1, evoked Embossing is by means of the dash-dotted line 33 shown.

Mit der Erfindung ist es möglich, bahnförmige Materialien, beispielsweise Kunststoff-Folien, Zellstoffbahnen oder dergleichen durch chemische und/oder physikalische Anwendung oder formschlüssige Verbindung zu verprägen. Damit können auf der Oberfläche des bahnförmigen Materials Strukturen flächigen Charakters erzeugt werden. Die Prägestellen sind dabei ausschließlich nach innen gewölbt, so daß die Dicke des verprägten Materials nur von der Dicke der einzelnen Lagen abhängig ist.With the invention it is possible to use sheet-like materials, for example plastic films, cellulose webs or the like by chemical and / or physical application or to emboss a positive connection. In order to can on the surface of the sheet material Structures of flat character are generated. The embossing points are only arched inwards, so that the thickness of the embossed material depends only on the thickness of the individual layers.

Die in der vorstehenden Beschreibung, in der Zeichnung sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung wesentlich sein.The in the above description, in the drawing as well as features of the invention disclosed in the claims can be used individually or in any combination be essential for the implementation of the invention.

Claims (6)

Bahn- oder blattförmiges Material aus mindestens zwei Lagen, mit einem Prägemuster, das aus einer Vielzahl von einzelnen, die Lagen quer zur Lagenrichtung deformierenden und miteinander verbindenden Einprägungen besteht, die durch jeweils ausgehend von den beiden außenliegenden Lagen nach innen versenkt liegende Prägegebiete, die quer zur Lagenrichtung zumindestens teilweise überlappen, gebildet sind,
dadurch gekennzeichnet, daß die Prägegebiete zumindest teilweise flächige Gebiete (24; 25, 26, 27) sind, die quer zur Lagenrichtung jeweils mit mindestens einem weiteren flächigen Gebiet zumindest teilweise überlappen.Web or sheet material made of at least two layers, with an embossed pattern consisting of a large number of individual embossments which deform and connect the layers transversely to the layer direction and which are embossed by embossing areas which are recessed inwards from the two outer layers overlap at least partially to the layer direction, are formed,
characterized in that the embossed areas are at least partially flat areas (24; 25, 26, 27) which at least partially overlap with at least one further flat area transversely to the layer direction. Bahn- oder blattförmiges Material nach Anspruch 1, dadurch gekennzeichnet, daß die Größe und/oder die Form der flächigen Gebiete (24; 25, 26, 27) abhängig vom Fließverhalten des Lagenmaterials so gewählt ist, daß ein Einreißen der Lagen (insbesondere 15, 18) in den Umfangsbereichen der flächigen Gebiete vermieden wird.Sheet or sheet material according to claim 1, characterized in that the size and / or shape of the flat areas (24; 25, 26, 27) depending on Flow behavior of the layer material is chosen so that a Tear the layers (especially 15, 18) in the Circumferential areas of the flat areas is avoided. Bahn- oder blattförmiges Material nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in quer über das Material verlaufenden Streifenbereichen gleicher Breite die Gesamtfläche der überlappenden Bereiche (wie 22, 28, 29, 30) der flächigen Gebiete im wesentlichen konstant ist.Sheet or sheet material according to claim 1 or 2, characterized in that in across the Striped material areas of the same width the total area of the overlapping areas (such as 22, 28, 29, 30) of the flat areas essentially constant is. Bahn- oder blattförmiges Material nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Lagen (15, 16, 17, 18) aus Kunststoff bestehen.Web or sheet material according to one of the Claims 1 to 3, characterized in that the layers (15, 16, 17, 18) consist of plastic. Bahn- oder blattförmiges Material nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Lagen (15, 16, 17, 18) aus Zellstoff bestehen.Web or sheet material according to one of the Claims 1 to 3, characterized in that the layers (15, 16, 17, 18) consist of cellulose. Bahn- oder blattförmiges Material nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zumindest die Prägegebiete mit einem Klebemittel versehen sind.Web or sheet material according to one of the Claims 1 to 5, characterized in that at least the stamping areas are provided with an adhesive.
EP99101632A 1998-02-05 1999-02-04 Sheet-like material with at least two layers and an embossed pattern Withdrawn EP0934818A3 (en)

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DE29801859U 1998-02-05
DE29801859U DE29801859U1 (en) 1998-02-05 1998-02-05 Web or sheet material from at least two layers

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207367A (en) * 1970-03-30 1980-06-10 Scott Paper Company Nonwoven fabric
EP0241263A2 (en) * 1986-04-08 1987-10-14 PAPER-PAK PRODUCTS, INC. (a Delaware Corporation) Fabrication of laminated absorbent sheets
US4731276A (en) * 1984-07-03 1988-03-15 The James River Corporation Scrim reinforced, quilted cloth-like composite laminate and a method of making
US5527429A (en) * 1990-03-08 1996-06-18 Papeteries De Cascadec Method of preparing paper for filter bags, apparatus for implementing the method, and product obtained thereby
WO1999032698A1 (en) * 1997-12-22 1999-07-01 The Procter & Gamble Company Breathable web materials having cloth-like texture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207367A (en) * 1970-03-30 1980-06-10 Scott Paper Company Nonwoven fabric
US4731276A (en) * 1984-07-03 1988-03-15 The James River Corporation Scrim reinforced, quilted cloth-like composite laminate and a method of making
EP0241263A2 (en) * 1986-04-08 1987-10-14 PAPER-PAK PRODUCTS, INC. (a Delaware Corporation) Fabrication of laminated absorbent sheets
US5527429A (en) * 1990-03-08 1996-06-18 Papeteries De Cascadec Method of preparing paper for filter bags, apparatus for implementing the method, and product obtained thereby
WO1999032698A1 (en) * 1997-12-22 1999-07-01 The Procter & Gamble Company Breathable web materials having cloth-like texture

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EP0934818A3 (en) 2000-08-09

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