EP1939341A1 - Embossing roller for manufacturing fibrous web - Google Patents
Embossing roller for manufacturing fibrous web Download PDFInfo
- Publication number
- EP1939341A1 EP1939341A1 EP07024913A EP07024913A EP1939341A1 EP 1939341 A1 EP1939341 A1 EP 1939341A1 EP 07024913 A EP07024913 A EP 07024913A EP 07024913 A EP07024913 A EP 07024913A EP 1939341 A1 EP1939341 A1 EP 1939341A1
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- European Patent Office
- Prior art keywords
- spot
- weld
- line
- embossing roller
- embossing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C23/00—Making patterns or designs on fabrics
- D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
Definitions
- the invention relates to an embossing roller for the production of nonwoven fabric, wherein the embossing roller has an endless relief on its lateral surface with a plurality of spaced, the surface of the embossing roller following nubs, each at its free end a spot weld surface for solidifying the web by means of pressure and / or Heat, wherein the weld spot areas in the plan view of the lateral surface of the embossing roll have an elongated shape, and wherein the weld spot surfaces of a group of juxtaposed nubs each form a pattern repeat, which repeats along in the lateral surface of the embossing roller transverse slope lines each.
- the embossing roller has on its mantle or peripheral surface on a plurality of nubs, which are spaced from each other by gaps.
- the nubs are arranged in a matrix shape in a plurality of mutually parallel first rows and a plurality of transverse to the first rows and parallel to each other second rows.
- the first rows extend along first pitch lines and the second rows extend along second pitch lines.
- the pitch lines are each inclined at an angle of 30 ° in transverse directions to the axis of rotation of the embossing roller.
- the nubs taper to a spot weld area.
- the spot weld surfaces of the lateral surface facing a smooth roller which is arranged with its axis of rotation parallel to the axis of rotation of the embossing roll and is spaced by a nip of this.
- the nonwoven fabric guided between the rotating rolls is solidified between the weld nip surfaces and the surface of the smooth roll, whereby the individual fibers of the nonwoven are welded together.
- the spot weld surfaces In the plan view of the outer surface of the embossing roll, the spot weld surfaces have an elongated, approximately elliptical shape.
- the longitudinal axes of spot weld surfaces, which are each arranged in a first row, are oriented alternately in two different longitudinal directions.
- a first longitudinal direction extends in the direction of the first gradient lines and a second longitudinal direction in the direction of the second gradient lines.
- the longitudinal axes of spot weld surfaces which are each arranged in a second row, are oriented alternately in these longitudinal directions.
- two spot weld areas each form a pattern repeat.
- the embossing roll should allow embossing of a soft and fluffy fleece by this arrangement of the spot weld surfaces and the elongated shape of the spot weld surfaces.
- a disadvantage of the embossing roll is that the nonwoven fabric produced with the embossing roll has only a relatively low tensile strength both in the direction of the axis of rotation of the embossing roll and in the circumferential direction of the embossing roll.
- spot weld surfaces are arranged such that each extending in the circumferential surface within the pattern repeat in the circumferential direction of the embossing roll line intersects and / or contacts at least one weld spot and each extending in the lateral surface within the pattern repeat in the direction of the axis of rotation of the embossing roll Line cuts and / or touch at least one spot weld surface.
- a continuous lane is formed neither in the circumferential direction nor in the longitudinal direction of the embossing roll between the spot weld surfaces.
- both in the circumferential direction - the so-called machine direction (MD) - as well as in the direction of the axis of rotation of the embossing roll - the so-called Crossdirection (CD) - allows a high tensile strength of the nonwoven fabric.
- the embossing roll enables the production of a smooth, soft, fluffy nonwoven fabric.
- the invention are within the pattern repeat along at least one slope line multiple spot weld surfaces in arranged in a row, wherein at least three of these weld spot surfaces are oriented with its longitudinal axis in different directions.
- the fleece made with the embossing roll is then even softer and fluffier.
- At least four weld spot areas are provided in at least one of the rows of spot areas running within the pattern repeat along a slope line, two of these spot weld areas being oriented with their longitudinal axis in the same direction. This results in a correspondingly enlarged pattern repeat.
- the welding point surfaces oriented in the same direction adjacent to each other within the pattern repeat along a slope line adjacent to each other and / or one of these Sch.tician Jerusalem somnosasing roll is located at the beginning and the other at the end of the series.
- the nonwoven made with the embossing roll is then shaped very homogeneous.
- spot weld surfaces are rounded and preferably designed to be elliptical or ellipse-like.
- the fleece produced with the embossing roller then feels particularly pleasant and fluffy.
- a first slope line with a line extending in the lateral surface parallel to the axis of rotation of the embossing roll includes an angle between 121.6 ° and 131.6 °, in particular between 124.1 ° and 129.1 ° and preferably of 126 , 6 ° and a second slope line with the line extending in the lateral surface parallel to the axis of rotation an angle between 1.6 ° and 11.6 °, in particular between 4.1 ° and 9.1 ° and preferably of 6.6 °.
- each arranged on a second slope line four spot weld surfaces are a first spot weld surface with its longitudinal axis in the direction of the second slope line, a second spot weld surface with its longitudinal axis in the direction of the first slope line and Slope line and two other spot weld surface are arranged with their longitudinal axes in the direction of a third slope line, which preferably extends in the direction of the bisecting line between the first slope line and the second slope line.
- the nonwoven produced with the embossing roll then has particularly favorable well-being properties.
- At least two second slope lines are provided, on each of which at least four spot weld surfaces are arranged in a row, that of the four spot weld surfaces each have a first spot weld surface with its longitudinal axis in the direction of the second slope line, a second spot weld surface is arranged with its longitudinal axis in the direction of the first slope line and two further spot weld surfaces with their longitudinal axes in the direction of the third slope line, and in that the rows, the first, second and third weld spot surfaces are arranged in a different order.
- the weld spot areas which are oriented with their longitudinal axis in the same direction, are preferably arranged next to one another in the individual rows.
- the spot weld surfaces oriented with their longitudinal axis in the same direction may be located at locations corresponding to the locations where the first and second spot weld surfaces are provided in a second row.
- the weld spot surfaces are preferably connected via flanks with regions of the mantle surface of the embossing roller located between the dimples, wherein the flanks each include an angle between 21 ° and 23 °, in particular between them, with a line passing through them radially to the axis of rotation of the embossing roller 21.5 ° and 22.5 ° and is preferably 22 °.
- the nubs can then be easily produced by engraving the surface of a cylindrical roller in the production of the embossing roll.
- An in Fig. 1 as a whole designated 1 embossing roller for the production of nonwoven fabrics has a substantially cylindrical roller portion 2, on both sides of the bearing journal 3 are formed.
- the embossing roller 1 can be rotatably mounted about a rotation axis 4 by means of rolling or plain bearings on a calender frame (not shown in detail in the drawing).
- a smooth roller is further arranged, which is arranged with its axis of rotation parallel to the axis of rotation 4 of the embossing roller 1. Between the embossing roll 1 and the smooth roll, a nip is formed.
- the roller portion 2 of the embossing roller 1 on its lateral surface on an endless relief, which is formed by a plurality of laterally spaced apart knobs 5, which protrude radially to the rotation axis 4 on the lateral surface of the roller section 2.
- the direction in which the rotation axis 4 of the embossing roll 1 extends is in FIG Fig. 1 and 2 through the double arrow marked CD (Cross Direction) and the circumferential sighting of the preform roller 1 is marked by the double arrow marked MD (Machine Direction).
- the nubs 5 each have a spot weld surface 6, which follows the lateral surface of the roller section 2 and serves to press the individual fibers of the nonwoven fabric against the outer surface of the smooth roller and each other to weld and / or solidify. It can clearly be seen that the spot weld surfaces 6 have an oval or elliptical outer contour.
- the spot weld surfaces 6 of 16 in a plurality of rows of juxtaposed knobs each form a pattern repeat, which is repeated along each of the lateral surface of the embossing roller 1 transverse slope lines 7, 8.
- the slope lines 7, 8 extend in the plan view of the lateral surface of the embossing roller 1 obliquely to the axis of rotation 4 and obliquely to the circumferential direction of the embossing roller. 1
- the weld spot surfaces 6 are arranged such that each extending in the circumferential surface within the pattern repeat in the circumferential direction of the embossing roll 1 line 9 intersects at least one spot weld surface 6.
- Fig. 3 is exemplified such a line 9.
- the unwound lateral surface of the embossing roll there are no straight lanes that extend in the MD direction without interruption over the entire pattern repeat.
- the spot weld surfaces 6 are also arranged such that each in the lateral surface within the pattern repeat in the axial direction of the embossing roller 1 extending line 10 intersects at least one Sch hassleticianf kaue 6.
- Fig. 3 is exemplified such a line 10 located. So there are no straight lanes that extend in the CD direction without interruption over the entire pattern repeat.
- a plurality of weld spot surfaces 6 are arranged in a row along the first slope lines 7 within the pattern repeat.
- Three of the spot weld surfaces 6 of the middle first slope line 7 are each oriented with their longitudinal axis in different directions.
- Two weld spot surfaces 6 arranged next to one another on this first slope line 7 are oriented in the same direction in the plan view onto the lateral surface of the roll section 2 with their longitudinal axis.
- the first slope lines 7 are arranged in the plan view of the lateral surface of the roller section 2 at an angle ⁇ to the rotation axis 4, which is preferably 66.6 °.
- a plurality of spot weld surfaces 6 are arranged in a row along the second gradient lines 8 within the pattern repeat.
- Three weld spot surfaces 6 are oriented with their longitudinal axis in each case in different directions.
- Each two located on a second slope line 8 welding spot surfaces 6 are aligned in the plan view of the lateral surface of the roller section 2 with its longitudinal axis in the same direction.
- These two spot weld surfaces 6 are adjacent to one another next to each other at some second gradient lines 8 of the pattern repeat, and at the beginning and at the end of the first gradient lines 7 of the pattern repeat at the remaining second gradient lines 8.
- the second pitch lines 7 are oriented in the plan view of the lateral surface of the roller section 2 at an angle ⁇ to the rotation axis 4, which is preferably 6.6 °.
- Fig. 3 are also third slope lines 11 located on which the weld spot surfaces 6 are arranged in rows.
- the spot weld surfaces 6 are each oriented with their longitudinal axis in two different directions.
- the third slope lines 11 are oriented in the plan view of the lateral surface of the roller section 2 at an angle ⁇ to the rotation axis 4, which is preferably 66.6 °.
- a second spot weld surface 6 with its longitudinal axis in the direction of the first slope line 7 and two Further welding spot surfaces 6 are oriented with their longitudinal axes in the direction of the bisecting line between the first slope line 7 and the second slope line 8.
- a second spot weld area 6 with its longitudinal axis in the direction of the second slope line 7 and two further spot weld areas 6 are with their longitudinal axes oriented in the direction of the bisecting line between the first slope line 7 and the second slope line 8.
- the welding spot surfaces 6 are connected via flanks 12 with cylindrical regions of the jacket surface of the embossing roll 1 located between the nubs.
- the flanks 12 in each case enclose an angle ⁇ , which is preferably 22 °, with a line running through them, arranged radially to the axis of rotation 4 of the embossing roll 1.
- the Sch josticianfizzen 6 have an elongated shape.
- the length L of the spot weld surfaces 6 is preferably 0.882 mm, the width B is 0.524 mm and the height H is preferably 0.68 mm.
- the distance between adjacent first pitch lines 7 and adjacent second pitch lines 8 is in each case about 1.317 mm.
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Abstract
Description
Die Erfindung betrifft eine Prägewalze zur Herstellung von Vlies, wobei die Prägewalze an ihrer Mantelfläche ein Endlosrelief mit einer Vielzahl von zueinander beabstandeten, der Oberfläche der Prägewalze folgender Noppen hat, die jeweils an ihrem freien Ende eine Schweißpunktfläche zum Verfestigen des Vlies mittels Druck und/oder Wärme aufweisen, wobei die Schweißpunktflächen in der Aufsicht auf die Mantelfläche der Prägewalze eine längliche Form haben, und wobei die Schweißpunktflächen einer Gruppe von nebeneinander angeordneten Noppen jeweils einen Musterrapport bilden, der sich entlang von in der Mantelfläche der Prägewalze quer zueinander verlaufenden Steigungslinien jeweils wiederholt.The invention relates to an embossing roller for the production of nonwoven fabric, wherein the embossing roller has an endless relief on its lateral surface with a plurality of spaced, the surface of the embossing roller following nubs, each at its free end a spot weld surface for solidifying the web by means of pressure and / or Heat, wherein the weld spot areas in the plan view of the lateral surface of the embossing roll have an elongated shape, and wherein the weld spot surfaces of a group of juxtaposed nubs each form a pattern repeat, which repeats along in the lateral surface of the embossing roller transverse slope lines each.
Eine derartige Prägewalze zur Herstellung eines Vliesstoffs ist aus der Praxis bekannt. Die Prägewalze weist an ihrer Mantel- oder Umfangsfläche eine Vielzahl von Noppen auf, die durch Zwischenräume voneinander beabstandet sind. Die Noppen sind matrixförmig in mehreren parallel zueinander verlaufenden ersten Reihen und mehreren quer zu den ersten Reihen und parallel zueinander verlaufenden zweiten Reihen angeordnet. Die ersten Reihen erstrecken sich entlang von ersten Steigungslinien und die zweiten Reihen erstrecken sich entlang von zweiten Steigungslinien. In der Aufsicht auf die Mantelfläche der Prägewalze sind die Steigungslinien jeweils unter einem Winkel von 30° in quer zueinander verlaufenden Richtungen zur Rotationsachse der Prägewalze geneigt. Ausgehend von ihrem Fuß zu ihrer am weitesten vorstehenden Stelle verjüngen sich die Noppen zu einer Schweißpunktfläche hin. In Gebrauchsstellung sind die Schweißpunktflächen der Mantelfläche einer Glattwalze zugewandt, die mit ihrer Rotationsachse parallel zur Rotationsachse der Prägewalze angeordnet ist und durch einen Walzenspalt von dieser beabstandet ist. In dem Walzenspalt wird das zwischen den rotierenden Walzen hindurch geführte Vlies zwischen den Schweißpunkiflächen und der Mantelfläche der Glattwalze verfestigt, wobei die einzelnen Fasern des Vlies miteinander verschweißt werden. In der Aufsicht auf die Mantelfläche der Prägewalze haben die Schweißpunktflächen eine längliche, etwa elliptische Form. Die Längsachsen von Schweißpunktflächen, die jeweils in einer ersten Reihe angeordnet sind, sind abwechselnd in zwei unterschiedliche Längsrichtungen orientiert.Such an embossing roll for producing a nonwoven fabric is known in practice. The embossing roller has on its mantle or peripheral surface on a plurality of nubs, which are spaced from each other by gaps. The nubs are arranged in a matrix shape in a plurality of mutually parallel first rows and a plurality of transverse to the first rows and parallel to each other second rows. The first rows extend along first pitch lines and the second rows extend along second pitch lines. In the plan view of the lateral surface of the embossing roller, the pitch lines are each inclined at an angle of 30 ° in transverse directions to the axis of rotation of the embossing roller. Starting from their feet to their furthest protruding point, the nubs taper to a spot weld area. In the position of use, the spot weld surfaces of the lateral surface facing a smooth roller, which is arranged with its axis of rotation parallel to the axis of rotation of the embossing roll and is spaced by a nip of this. In the nip, the nonwoven fabric guided between the rotating rolls is solidified between the weld nip surfaces and the surface of the smooth roll, whereby the individual fibers of the nonwoven are welded together. In the plan view of the outer surface of the embossing roll, the spot weld surfaces have an elongated, approximately elliptical shape. The longitudinal axes of spot weld surfaces, which are each arranged in a first row, are oriented alternately in two different longitudinal directions.
Dabei bilden jeweils zwei zueinander benachbarte Schweißpunktflächen einen Rapport. Eine erste Längsrichtung verläuft in Richtung der ersten Steigungslinien und eine zweite Längsrichtung in Richtung der zweiten Steigungslinien. In entsprechender Weise sind die Längsachsen von Schweißpunktflächen, die jeweils in einer zweiten Reihe angeordnet sind, abwechselnd in diese Längsrichtungen orientiert. Auch entlang der zweiten Steigungslinie bilden jeweils zwei Schweißpunktflächen einen Musterrapport. Nach Angabe des Herstellers soll die Prägewalze durch diese Anordnung der Schweißpunktflächen und die längliche Form der Schweißpunktflächen das Prägen eines weichen und flauschigen Vlieses ermöglichen. Ein Nachteil der Prägewalze besteht jedoch noch darin, dass das mit der Prägewalze hergestellte Vlies sowohl in Richtung der Rotationsachse der Prägewalze als auch in Umfangsrichtung der Prägewalze nur eine relativ geringe Zugfestigkeit aufweist.In each case two mutually adjacent weld spot areas form a repeat. A first longitudinal direction extends in the direction of the first gradient lines and a second longitudinal direction in the direction of the second gradient lines. In a corresponding manner, the longitudinal axes of spot weld surfaces, which are each arranged in a second row, are oriented alternately in these longitudinal directions. Also along the second slope line, two spot weld areas each form a pattern repeat. According to the manufacturer, the embossing roll should allow embossing of a soft and fluffy fleece by this arrangement of the spot weld surfaces and the elongated shape of the spot weld surfaces. However, a disadvantage of the embossing roll is that the nonwoven fabric produced with the embossing roll has only a relatively low tensile strength both in the direction of the axis of rotation of the embossing roll and in the circumferential direction of the embossing roll.
Es besteht deshalb die Aufgabe, eine Prägewalze der eingangs genannten Art zu schaffen, welche die Herstellung eines flauschigen, aber dennoch zugfesten Vlieses ermöglicht.It is therefore an object to provide an embossing roller of the type mentioned, which allows the production of a fluffy, yet tensile nonwoven fabric.
Diese Aufgabe wird dadurch gelöst, dass die Schweißpunktflächen derart angeordnet sind, dass jede in der Mantelfläche innerhalb des Musterrapports in Umfangsrichtung der Prägewalze verlaufende Linie mindestens eine Schweißpunktfläche schneidet und/oder berührt und jede in der Mantelfläche innerhalb des Musterrapports in Richtung der Rotationsachse der Prägewalze verlaufende Linie mindestens eine Schweißpunktfläche schneidet und/oder berührt.This object is achieved in that the spot weld surfaces are arranged such that each extending in the circumferential surface within the pattern repeat in the circumferential direction of the embossing roll line intersects and / or contacts at least one weld spot and each extending in the lateral surface within the pattern repeat in the direction of the axis of rotation of the embossing roll Line cuts and / or touch at least one spot weld surface.
In vorteilhafter Weise ist also weder in Umfangs- noch in Längsrichtung der Prägewalze zwischen den Schweißpunktflächen eine durchgehende Gasse gebildet. Dadurch wird sowohl in Umfangsrichtung - der so genannten Machine Direction (MD) - als auch in Richtung der Rotationsachse der Prägewalze - der so genannten Crossdirection (CD) - eine hohe Zugfestigkeit des Vliesstoffs ermöglicht. Aufgrund der länglichen Form der Schweißpunktflächen und des sich wiederholenden Musterrapports ermöglicht die Prägewalze darüber hinaus die Herstellung eines gleichmäßigen, weichen flauschigen Vliesstoffs.In an advantageous manner, therefore, a continuous lane is formed neither in the circumferential direction nor in the longitudinal direction of the embossing roll between the spot weld surfaces. As a result, both in the circumferential direction - the so-called machine direction (MD) - as well as in the direction of the axis of rotation of the embossing roll - the so-called Crossdirection (CD) - allows a high tensile strength of the nonwoven fabric. In addition, due to the elongated shape of the spot weld surfaces and the repeating pattern repeat, the embossing roll enables the production of a smooth, soft, fluffy nonwoven fabric.
Bei einer vorteilhaften Ausgestaltung der Erfindung sind innerhalb des Musterrapports entlang von mindestens einer Steigungslinie mehrere Schweißpunktflächen in einer Reihe angeordnet, wobei mindestens drei dieser Schweißpunktflächen mit ihrer Längsachse in unterschiedliche Richtungen orientiert sind. Das mit der Prägewalze hergestellte Vlies ist dann noch weicher und flauschiger.In an advantageous embodiment of the invention are within the pattern repeat along at least one slope line multiple spot weld surfaces in arranged in a row, wherein at least three of these weld spot surfaces are oriented with its longitudinal axis in different directions. The fleece made with the embossing roll is then even softer and fluffier.
Bei einer bevorzugten Ausführungsform der Erfindung sind in mindestens einer der innerhalb des Musterrapports entlang einer Steigungslinie verlaufenden Reihen mit Schweißpunktflächen mindestens vier Schweißpunktfächen vorgesehen, wobei zwei dieser Schweißpunktflächen mit ihrer Längsachse in dieselbe Richtung orientiert sind. Dadurch ergibt sich entsprechend vergrößerter Musterrapport.In a preferred embodiment of the invention, at least four weld spot areas are provided in at least one of the rows of spot areas running within the pattern repeat along a slope line, two of these spot weld areas being oriented with their longitudinal axis in the same direction. This results in a correspondingly enlarged pattern repeat.
Bei einer zweckmäßigen Ausgestaltung der Erfindung sind die in die dieselbe Richtung orientierten Schweißpunktflächen der innerhalb des Musterrapports entlang einer Steigungslinie verlaufenden Reihe benachbart nebeneinander angeordnet und/oder eine dieser Schweißpunktflächen ist am Anfang und die andere am Ende der Reihe angeordnet. Das mit der Prägewalze hergestellte Vlies ist dann besonders homogen geprägt.In an expedient embodiment of the invention, the welding point surfaces oriented in the same direction adjacent to each other within the pattern repeat along a slope line adjacent to each other and / or one of these Schweißpunktflächen is located at the beginning and the other at the end of the series. The nonwoven made with the embossing roll is then shaped very homogeneous.
Vorteilhaft ist, wenn die Schweißpunktflächen gerundet und vorzugsweise elliptisch oder ellipsenähnlich ausgestaltet sind. Das mit der Prägewalze hergestellte Vlies fühlt sich dann besonders angenehm und flauschig an.It is advantageous if the spot weld surfaces are rounded and preferably designed to be elliptical or ellipse-like. The fleece produced with the embossing roller then feels particularly pleasant and fluffy.
Bei einer bevorzugten Ausführungsform der Erfindung schließt eine erste Steigungslinie mit einer in der Mantelfläche parallel zur Rotationsachse der Prägewalze verlaufenden Linie einen Winkel zwischen 121,6° und 131,6°, insbesondere zwischen 124,1 ° und 129,1 ° und bevorzugt von 126,6° und eine zweite Steigungslinie mit der in der Mantelfläche parallel zur Rotationsachse verlaufenden Linie einen Winkel zwischen 1,6° und 11,6°, insbesondere zwischen 4,1° und 9,1° und bevorzugt von 6,6° ein. Bei dieser Anordnung der Schweißpunktflächen weist das mit der Prägewalze hergestellte Vlies eine besonders hohe Zugfestigkeit in Richtung der Rotationsachse der Prägewalze aufIn a preferred embodiment of the invention, a first slope line with a line extending in the lateral surface parallel to the axis of rotation of the embossing roll includes an angle between 121.6 ° and 131.6 °, in particular between 124.1 ° and 129.1 ° and preferably of 126 , 6 ° and a second slope line with the line extending in the lateral surface parallel to the axis of rotation an angle between 1.6 ° and 11.6 °, in particular between 4.1 ° and 9.1 ° and preferably of 6.6 °. With this arrangement of the spot weld surfaces, the nonwoven made with the embossing roll has a particularly high tensile strength in the direction of the axis of rotation of the embossing roll
Zweckmäßigerweise sind von innerhalb des Musterrapports jeweils auf einer zweiten Steigungslinie angeordneten vier Schweißpunktflächen eine erste Schweißpunktfläche mit ihrer Längsachse in Richtung der zweiten Steigungslinie, eine zweite Schweißpunktfläche mit ihrer Längsachse in Richtung der ersten Steigungslinie und Steigungslinie und zwei weitere Schweißpunktfläche mit ihren Längsachsen in Richtung einer dritten Steigungslinie angeordnet sind, die vorzugsweise in Richtung der Winkelhalbierenden zwischen der ersten Steigungslinie und der zweiten Steigungslinie verläuft. Das mit der Prägewalze hergestellte Vlies hat dann besonders günstige Wohlfühleigenschaften.Conveniently, from within the pattern repeat each arranged on a second slope line four spot weld surfaces are a first spot weld surface with its longitudinal axis in the direction of the second slope line, a second spot weld surface with its longitudinal axis in the direction of the first slope line and Slope line and two other spot weld surface are arranged with their longitudinal axes in the direction of a third slope line, which preferably extends in the direction of the bisecting line between the first slope line and the second slope line. The nonwoven produced with the embossing roll then has particularly favorable well-being properties.
Bei einer bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass innerhalb des Musterrapports mindestens zwei zweite Steigungslinien vorgesehen sind, auf denen jeweils mindestens vier Schweißpunktflächen in einer Reihe angeordnet sind, dass von den vier Schweißpunktflächen jeweils eine erste Schweißpunktfläche mit ihrer Längsachse in Richtung der zweiten Steigungslinie, eine zweite Schweißpunktfläche mit ihrer Längsachse in Richtung der ersten Steigungslinie und zwei weitere Schweißpunktflächen mit ihren Längsachsen in Richtung der dritten Steigungslinie angeordnet sind, und dass bei den Reihen die ersten, zweiten und dritten Schweißpunktflächen in einer unterschiedlichen Reihenfolgen angeordnet sind. Dabei sind in den einzelnen Reihen die Schweißpunktfächen, die mit ihrer Längsachse in dieselbe Richtung orientiert sind, bevorzugt nebeneinander angeordnet. Bei einer ersten Reihe können die Schweißpunktflächen, die mit ihrer Längsachse in dieselbe Richtung orientiert sind, an Stellen angeordnet sein, die den Stellen entsprechen, an denen bei einer zweiten Reihe die ersten und zweiten Schweißpunktflächen vorgesehen sind.In a preferred embodiment of the invention it is provided that within the pattern repeat at least two second slope lines are provided, on each of which at least four spot weld surfaces are arranged in a row, that of the four spot weld surfaces each have a first spot weld surface with its longitudinal axis in the direction of the second slope line, a second spot weld surface is arranged with its longitudinal axis in the direction of the first slope line and two further spot weld surfaces with their longitudinal axes in the direction of the third slope line, and in that the rows, the first, second and third weld spot surfaces are arranged in a different order. In this case, the weld spot areas, which are oriented with their longitudinal axis in the same direction, are preferably arranged next to one another in the individual rows. In a first series, the spot weld surfaces oriented with their longitudinal axis in the same direction may be located at locations corresponding to the locations where the first and second spot weld surfaces are provided in a second row.
Die Schweißpunktflächen sind bevorzugt über Flanken mit zwischen den Noppen befindlichen Bereichen der Mantelfläche der Prägewalze verbunden, wobei die Flanken jeweils mit einer durch sie hindurch laufenden, radial zur Rotationsachse der Prägewalze angeordneten Linie einen Winkel einschließen, der zwischen 21° und 23°, insbesondere zwischen 21,5° und 22,5° liegt und bevorzugt 22° beträgt. Die Noppen lassen sich dann bei der Fertigung der Prägewalze durch Gravieren der Oberfläche einer zylindrischen Walze leicht herstellen.The weld spot surfaces are preferably connected via flanks with regions of the mantle surface of the embossing roller located between the dimples, wherein the flanks each include an angle between 21 ° and 23 °, in particular between them, with a line passing through them radially to the axis of rotation of the embossing roller 21.5 ° and 22.5 ° and is preferably 22 °. The nubs can then be easily produced by engraving the surface of a cylindrical roller in the production of the embossing roll.
Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further advantageous embodiments of the invention are specified in the subclaims.
Nachfolgend ist ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. Es zeigt:
- Fig. 1
- eine Aufsicht auf eine Prägewalze zur Herstellung von Vliesstoffen,
- Fig. 2
- eine Teilansicht der Mantelfläche der Prägewalze, auf welcher Teilansicht ein Endlosrelief erkennbar ist,
- Fig. 3
- eine vergrößerte Ansicht des Musterrapports des Endlosreliefs,
- Fig. 4
- einen Schnitt durch eine Noppe des Endlosreliefs, wobei die Schnittebene in Längsrichtung der Noppe verläuft, und
- Fig. 5
- einen Schnitt durch eine Noppe des Endlosreliefs, wobei die Schnittebene gegenüber der Schnittebene in
Fig. 4 um 90° gedreht ist.
- Fig. 1
- a view of an embossing roller for the production of nonwovens,
- Fig. 2
- a partial view of the lateral surface of the embossing roller, on which partial view an endless relief can be seen,
- Fig. 3
- an enlarged view of the pattern repeat of the endless relief,
- Fig. 4
- a section through a knob of the endless relief, wherein the cutting plane extends in the longitudinal direction of the knob, and
- Fig. 5
- a section through a knob of the endless relief, wherein the cutting plane relative to the cutting plane in
Fig. 4 rotated by 90 °.
Eine in
Wie in
An ihrem freien Ende weisen die Noppen 5 jeweils eine Schweißpunktfläche 6 auf, die der Mantelfläche des Walzenabschnitts 2 folgt und dazu dient, die einzelnen Fasern des Vliesstoffs an die Mantelfläche der Glattwalze anzupressen und miteinander zu verschweißen und/oder zu verfestigen. Deutlich ist erkennbar, dass die Schweißpunktflächen 6 eine ovale oder elliptische Außenkontur haben.At their free end, the
In
Wie in
Die Schweißpunktflächen 6 sind außerdem derart angeordnet, dass jede in der Mantelfläche innerhalb des Musterrapports in Axialrichtung der Prägewalze 1 verlaufende Linie 10 mindestens eine Schweißpunktfäche 6 schneidet. In
Wie in
In entsprechender Weise sind innerhalb des Musterrapports entlang von zweiten Steigungslinien 8 jeweils mehrere Schweißpunktflächen 6 in einer Reihe angeordnet. Drei Schweißpunktflächen 6 sind mit ihrer Längsachse jeweils in unterschiedliche Richtungen orientiert. Jeweils zwei auf einer zweiten Steigungslinie 8 befindliche Schweißpunktflächen 6 sind in der Aufsicht auf die Mantelfläche des Walzenabschnitts 2 mit lhrer Längsachse in dieselbe Richtung ausgerichtet. Diese beiden Schweißpunktflächen 6 sind bei einigen zweiten Steigungslinien 8 des Musterrapports benachbart nebeneinander und bei den übrigen zweiten Steigungslinien 8 am Anfang und am Ende der ersten Steigungslinien 7 des Musterrapports angeordnet. Die zweiten Steigungslinien 7 sind in der Aufsicht auf die Mantelfläche des Walzenabschnitts 2 unter einem Winkel β zur Rotationsachse 4 orientiert, der bevorzugt 6,6° beträgt.In a corresponding manner, a plurality of spot weld surfaces 6 are arranged in a row along the
In
In
In entsprechender Weise ist von den innerhalb des Musterrapports auf der mittleren ersten Steigungslinie 7 angeordneten vier Schweißpunktflächen 6 eine erste Schweißpunktfäche 6 mit ihrer Längsachse in Richtung der ersten Steigungslinie 8, eine zweite Schweißpunktfläche 6 mit ihrer Längsachse in Richtung der zweiten Steigungslinie 7 und zwei weitere Schweißpunktflächen 6 sind mit ihren Längsachsen in Richtung der Winkelhalbierenden zwischen der ersten Steigungslinie 7 und der zweiten Steigungslinie 8 orientiert.Correspondingly, of the four
In
In
Claims (13)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200620019710 DE202006019710U1 (en) | 2006-12-28 | 2006-12-28 | Embossing roller for producing non-woven fabric, has endless relief with naps at mantle surface, where each nap has weld point surface at its free end to reinforce fabric by pressure and/ore heat, and point surfaces have longitudinal form |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1939341A1 true EP1939341A1 (en) | 2008-07-02 |
Family
ID=37853379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07024913A Withdrawn EP1939341A1 (en) | 2006-12-28 | 2007-12-21 | Embossing roller for manufacturing fibrous web |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1939341A1 (en) |
DE (1) | DE202006019710U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2692924A1 (en) * | 2012-07-31 | 2014-02-05 | Suominen Corporation | Nonwoven calendered fabrics |
US9581191B2 (en) | 2011-06-06 | 2017-02-28 | Andritz Kuesters Gmbh | Roller and methods for production and operation |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4627137A (en) | 1983-07-21 | 1986-12-09 | Robert Casaretto Kg | Device for treating nonwovens |
US5057357A (en) * | 1988-10-21 | 1991-10-15 | Fiberweb North America, Inc. | Soft coverstock with improved dimensional stability and strength and method of manufacturing the same |
WO1999014415A1 (en) | 1997-09-15 | 1999-03-25 | Kimberly-Clark Worldwide, Inc. | Nonwoven bonding patterns producing fabrics with improved strength and abrasion resistance |
WO2000078883A1 (en) | 1999-06-18 | 2000-12-28 | 3M Innovative Properties Company | Nonwoven sheets, adhesive articles, and methods for making the same |
US6610390B1 (en) | 1999-08-13 | 2003-08-26 | First Quality Nonwovens, Inc. | Nonwoven with non-symmetrical bonding configuration |
-
2006
- 2006-12-28 DE DE200620019710 patent/DE202006019710U1/en not_active Expired - Lifetime
-
2007
- 2007-12-21 EP EP07024913A patent/EP1939341A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4627137A (en) | 1983-07-21 | 1986-12-09 | Robert Casaretto Kg | Device for treating nonwovens |
US5057357A (en) * | 1988-10-21 | 1991-10-15 | Fiberweb North America, Inc. | Soft coverstock with improved dimensional stability and strength and method of manufacturing the same |
WO1999014415A1 (en) | 1997-09-15 | 1999-03-25 | Kimberly-Clark Worldwide, Inc. | Nonwoven bonding patterns producing fabrics with improved strength and abrasion resistance |
WO2000078883A1 (en) | 1999-06-18 | 2000-12-28 | 3M Innovative Properties Company | Nonwoven sheets, adhesive articles, and methods for making the same |
US6610390B1 (en) | 1999-08-13 | 2003-08-26 | First Quality Nonwovens, Inc. | Nonwoven with non-symmetrical bonding configuration |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9581191B2 (en) | 2011-06-06 | 2017-02-28 | Andritz Kuesters Gmbh | Roller and methods for production and operation |
EP2692924A1 (en) * | 2012-07-31 | 2014-02-05 | Suominen Corporation | Nonwoven calendered fabrics |
US9103057B2 (en) | 2012-07-31 | 2015-08-11 | Suominen Corporation | Nonwoven calendered fabrics |
Also Published As
Publication number | Publication date |
---|---|
DE202006019710U1 (en) | 2007-03-01 |
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