EP1209289A1 - Creped absorbent paper sheet, creping cylinder and process for making such a sheet - Google Patents
Creped absorbent paper sheet, creping cylinder and process for making such a sheet Download PDFInfo
- Publication number
- EP1209289A1 EP1209289A1 EP00403285A EP00403285A EP1209289A1 EP 1209289 A1 EP1209289 A1 EP 1209289A1 EP 00403285 A EP00403285 A EP 00403285A EP 00403285 A EP00403285 A EP 00403285A EP 1209289 A1 EP1209289 A1 EP 1209289A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- base
- cylinder
- protrusions
- trunk
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/02—Patterned paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
-
- 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
- B31F2201/0728—Material
-
- 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
- B31F2201/0723—Characteristics of the rollers
- B31F2201/0738—Cross sectional profile of the embossments
-
- 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
- B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
-
- 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
- B31F2201/0764—Multi-layered the layers being nested
-
- 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
-
- 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
- B31F2201/0787—Applying adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24446—Wrinkled, creased, crinkled or creped
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24446—Wrinkled, creased, crinkled or creped
- Y10T428/24455—Paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
Definitions
- the invention relates to a sheet of paper, in particular a absorbent sheet of crepe cellulose wadding, having an embossing pattern.
- the invention relates in particular to a sheet of paper, consisting in particular of at least one fold of absorbent paper in creped cellulose wadding, intended for wiping in household, domestic or industrial use, i.e. can be used as a paper towel, cloth etc.
- embossing gives bulk to the sheet and it induces improved absorption of liquids, touch and sweetness.
- We tried to further increase the capacity absorption by creating multilayer sheets obtained by associating at least two layers, also called folds, made up each of at least one of said embossed sheets.
- the first is known in the field under the designation "nested" or interlocking. It consists, first, of embossing each folds separately so as to form on the surface protrusions generally substantially frustoconical or in pyramid trunks. Then we put glue on the top protrusions of one of the folds, and the folds are arranged so that the faces having the protrusions face each other, the protuberances of one between the protuberances of the other. We finally assemble the folds so that the protrusions having been glued come to fit between the protrusions of the other fold. So the two folds are linked by glue dots between the vertices of the protrusions of a fold and non- embossed between the protrusions of the other fold.
- the second method of assembly is known in the field under the designation spikes / spikes. It differs from the previous by the relative arrangement of the two folds. These, after they have have been embossed separately, are brought together so that to make the vertices of the protrusions coincide. The folds are linked between them by the tops of the protrusions, points against tips. This technique is illustrated by the patent US Patent 3,414,459.
- each of these protuberances is of generally frustoconical shape, each truncated cone being formed by a homologous spike belonging to an embossing cylinder.
- Each pin engraved on the cylinder has a vertex angle less than or equal to 60 ° giving a generally pointed shape.
- the height of the pins is for example between 0.4 mm and 0.6 mm, the choice of this total height being a compromised according to the density of the pins which is a function reverse of the height of the pins.
- the macro-protuberances constituting the main decorative motif have a density of less than 20 protuberances per cm 2 and are combined with the micro-protrusions of the background motif which have a density of more than 30 per cm 2 and preferably greater than or equal to 40 per cm 2 .
- Embossing increasing the overall thickness of the sheet, leads to improved absorption of liquids, but also its flexibility due to the rupture of part of the bonds between the fibers of the cellulose wadding. Embossing thus generally results in a loss of resistance to tear.
- the sheet may contain additives which give it resistance to the tear which is increased, especially in the wet state.
- the embossing is also more marked because we want to obtain a higher capacity absorption.
- the invention aims to propose an improved design of a embossed sheet having at least one fold with a background pattern to micro-protrusions and allowing in particular, but not only, its association with a pattern with macro-protuberances.
- the invention aims to improve performance and technical characteristics of the sheet in the case of a association of micro-protuberances and macro-protuberances, and improve the final appearance of the sheet by doing better appear the pattern with macro-protuberances which, depending on the state of the technique, is "embedded” in the background pattern and is greatly “flattened” by preventing more to find the relief and the effect fleece.
- the invention provides an embossed sheet composed of at least one ply of creped cellulose wadding weighing between 12 and 30 g / m 2 of the type comprising an embossing pattern comprising at least a first series of protuberances formed projecting on one side of the fold and whose density is greater than 20 protuberances per cm 2 , characterized in that each protuberance of the first series comprises a base in the form of a polyhedron trunk and a flat end section flattened with edges rounded.
- the invention also provides an engraved cylinder for the embossing of at least one fold belonging to an embossed sheet according to the invention, of the type comprising a series of pins for form the protrusions belonging to said first series, characterized in that each pin has a base in shape of polyhedron trunk and a flattened free end section.
- the invention also provides a method of manufacturing a sheet according to the invention, characterized in that it consists in embossing a first ply of cellulose wadding on a cylinder engraved according to the background pattern according to the invention so as to increase its thickness of less than 50%, then embossing said fold according to said main motif.
- Said fold can be associated with at least one second fold which can be embossed beforehand.
- Figure 1 an embodiment of a complex sheet of embossed paper, which here is a sheet of paper made up of two folds, upper 12 and lower 14, which are assembled according to the known technique in so-called “Nested” mode.
- Each fold of absorbent paper is made of cellulose wadding crêpe and sheet 10 is intended for all types of products hygiene or cleaning.
- the cellulose wadding whose grammage is between 12 and 30 g / m 2 , is preferably of the type obtained by conventional wet pressing, known as CWP.
- the sheet of paper shown in Figure 1 is for example intended to be incorporated into a paper towel roll.
- the lower fold 14 is a fold produced in accordance with teachings of the invention and in this embodiment there has a background pattern consisting of micro-protrusions 16 and a main motif, consisting of a series of macro-protuberances 18.
- the design and density of microprotrusions 14 arranged in regular pattern gives the bottom of the fold 14 a textile appearance, while the macro-protuberances 18 are here arranged in regular pattern, especially in the form of concentric circles.
- the background pattern is arranged between the alignments forming the main reason. In particular the background pattern fills the area between two concentric circles. The space between two adjacent macro-protrusions along the alignments forming the circles does not have micro-protrusions of the pattern background, visible.
- the number of macro-protuberances is less than 20 per cm 2 . It allows the association of folds in "Nested" mode. In this case, it is preferably between 5 and 15 per cm 2 , and more particularly between 5 and 9.
- connection between the fold upper 12 and the lower fold 14 is preferably obtained by collage of the vertices 22 of the macro-protrusions 18 with parts of the internal face, here lower, facing 24 and 26 of the top fold 12.
- each protrusion 16 of the bottom pattern of the lower fold 14 comprises a base in the form of a polyhedron trunk 28 and a section flattened free end 30 with rounded edges.
- micro-protrusions 16 are obtained by embossing the lower fold 14 by means of a embossed embossing cylinder 32 with part of the surface external cylindrical convex 34 is illustrated schematically especially in Figure 3.
- the surface 34 comprises a series of pins 36 formed in relief and whose shape or external profile is homologous to that which one wishes to obtain for each corresponding protrusion 16 of the fold 14 of the sheet 10.
- pins 36 which are adjacent to each other and which, in the example shown, are all of the same shape and dimensions. Insofar as They are within the scope of the invention, pins can be provided of different shapes.
- Each pin 36 is here constituted by a base 38 in shape of a pyramid trunk with a rectangular base and a vertex or free end section 40 which is flattened.
- each pin 36 is delimited by two short sides 42 or widths 42, which here are parallel to the cross direction CD and by two long sides 44 (or lengths 44) which are here parallel to the direction of travel MD.
- Each pin 36 is delimited laterally by two small substantially trapezoidal opposite faces 46 whose base is a small side 42, and by two large opposite faces substantially trapezoidal 48 whose base is a long side 44.
- each substantially trapezoidal side face 46, 48 is inclined with respect to the height, or central axis A, of the pin 36, by an angle alpha which is here equal to about 45 °, that is to say that the half angle at the top of the base 38 in the shape of a pyramid trunk is here equal to 45 °.
- the free end section, or vertex 40 is generally a flat plane substantially perpendicular to the central axis A and it is preferably connected to the lateral faces triangular 46 and 48 by rounded edges 50.
- each pin 36 is approximately 0.6 mm while the width 42 of its rectangular base is equal to 1.4 mm and length 44 is 1.8 mm.
- the width of its top 40 which is of general shape rectangular in top view and as we can see on the Figure 4, is approximately 0.2 mm while the length of the vertex 40 is approximately 0.6 mm.
- all of the pins 36 are adjacent and are formed on the surface 34 in the form of series of pins aligned in the direction of travel MD.
- the pins 36 of a series are shifted in the running direction, that is to say here parallel to their length 44 by half a step, that is to say from the half the length 44 of the rectangular base of a pin 36, or here 1.8 mm, two vertices 40 of two consecutive pins and aligned belonging to the same series being of course spaced 1.8 mm.
- the density of the pins 36 is substantially equal to 40 pins per cm 2 .
- the inclination of the lateral faces 46 and 48 can be accentuated, by reducing the value of the alpha angle up to 30 °, this limit value remaining greater than the value of the half-angle at the top of a conventional frustoconical picot, much sharper.
- the angle remains between 35 ° and 45 °.
- the edges of the flat are rounded
- the radius R of each rounded edge, or fillet 50 is by example here equal to 0.5 mm.
- each pin 36 is globally identical to those mentioned above with reference to first embodiment but the pins, as can be see in figure 8, are aligned by series of adjacent pins by their widths 42, and this in the cross direction CD of the cylinder engraved 32.
- the dimensions of the vertex or free end 40 may be greater.
- each vertex, or free end can be a rectangular flat whose width is equal to 0.4 mm and the length 0.8 mm, the radius R of each rounded edge 50 being here substantially equal to 0.1 mm, while the height H and the other dimensions of widths 42 and lengths 44 are unchanged.
- the embossing of the background pattern i.e. the realization of the microprotrusions 16 using one of the engraved cylinders of the type of those represented in FIGS. 3 to 11, is produced with a moderate embossing pressure, i.e. by controlling the increase in total thickness of the fold 14 resulting from the embossing.
- This increase is preferably less than or equal to the initial thickness of the fold 14, that is to say of the cotton batting sheet creped cellulose before embossing.
- this increase in height is less than half the thickness of the sheet.
- the lower fold 14 has pins 16 whose height is between 0.05 mm and 0.5 mm.
- the fold which comes to be embossed to make the background pattern with microprotrusions 16 is then embossed again to make the main motif consisting of macro-protuberances in circles concentric 18.
- the embossing pressure is then sufficient to allow the formation of curved annular zones between the circles concentric.
- FIG. 12 There is shown schematically in Figure 12 a installation 60 for embossing and assembly with gluing of the two folds, upper 12 and lower 14, for the production of the complex sheet 10.
- the creped cellulose wadding sheet constituting the fold 12 passes first between a first cylinder etched 62 and an associated cylinder 64 for producing the motif embossing of this fold 12.
- the cylinder 64 can be coated rubber or the like, or with a rigid coating such as steel or paper, but it is then provided with cavities complementary to the protrusions of the engraved cylinder 62.
- the cellulose wadding sheet constituting the lower fold 14 passes first in a unit of micro-embossing 66 comprising the engraved cylinder 32 whose surface convex cylindrical engraved 34 conforms to the teachings of the invention and which cooperates with an associated cylinder 68 for the realization of the background pattern including micro-protrusions 16.
- the cylinder 68 is made of rubber.
- the fold 14 with its micro-embossing 16 then passes between a third engraved cylinder 70 whose engraving pattern corresponds to the formation of macro-protuberances in circles concentric 18 and which cooperates with a rubber cylinder partner 72.
- the lower fold 14 with its micro-embossing 16 and its macro-embossing 18 then passes next to the engraved cylinder upper 62 to allow the association of the two folds, being passed before in front of a gluing cylinder 74 belonging to a gluing unit 76, of known design, which deposits the glue on the highest level vertices compared to the cylinder 70.
- the visual aspect obtained for the fold comprising the motif of micro-embossed background and the main macro-embossed decoration motif, is significantly improved compared to a state product of technique without the background motif.
- the method was applied to a main motif composed of protuberances forming concentric circles.
- the background pattern occupies the space between circles and other elements concentric.
- the space between two protrusions adjacent on the circles themselves is insufficient to accommodate a micro-protuberance.
- those of the process we obtains a product whose surface seen from the background pattern side has the appearance of concentric raised rings forming O-rings.
- the first line gives the values of a sheet of two non-embossed pleats. These are the reference values. Measures were made according to standard standards in this area.
- the second line gives the values of a product A of the prior art, the two folds of which have been embossed with the sole main motif. It is a paper towel marketed under the brand "Okay” in France and presenting a pattern made up of concentric circles as in figure 2, but without the background pattern. Macro-protrusions are 7.6 on average per cm 2 .
- the third line gives the values of a product B produced according to the invention, that is to say with the same main embossing pattern as the product A above and the same embossing conditions, but with the same pattern according to the invention, distributed as in FIG. 2, and comprising 40 micro-protuberances per cm 2 .
- the resistance across the wet state was measured first of a product having a bottom embossing consisting of microprotrusions obtained on a cylinder whose pins are of frustoconical shape with an apex angle slightly less than 30 °.
- the density of the pins of the background pattern was 37 per cm 2 .
- the resistance in the wet cross direction of a product was measured with the pattern of the prior art A (7.6 macro-protuberances per cm 2 ).
- the wet strength of product B was measured produced in accordance with the invention.
- a sheet conforms to the invention is less rigid than a sheet with a simple pattern of main embossing. Rigidity can be estimated using a consumer panel test or using a well-founded model on measurements of appropriate physical parameters.
Abstract
Description
L'invention concerne une feuille de papier, notamment une feuille de papier absorbant en ouate de cellulose crêpée, comportant un motif de gaufrage.The invention relates to a sheet of paper, in particular a absorbent sheet of crepe cellulose wadding, having an embossing pattern.
L'invention concerne en particulier une feuille de papier, constituée notamment d'au moins un pli de papier absorbant en ouate de cellulose crêpée, destinée au domaine de l'essuyage dans un usage ménager, domestique ou industriel, c'est-à-dire susceptible d'être utilisée comme essuie-tout, chiffon etc.The invention relates in particular to a sheet of paper, consisting in particular of at least one fold of absorbent paper in creped cellulose wadding, intended for wiping in household, domestic or industrial use, i.e. can be used as a paper towel, cloth etc.
Dans le domaine des papiers à usage sanitaire ou domestique tels que le papier hygiénique ou l'essuie-tout, il est connu de réaliser des feuilles de papier composées de plusieurs plis de papier absorbant, par exemple en ouate de cellulose aussi appelée "papier tissue", crêpée de grammage compris entre 12 et 30 g/m2, munies de protubérances qui sont obtenues par gaufrage.In the field of papers for sanitary or domestic use such as toilet paper or paper towels, it is known to produce sheets of paper composed of several plies of absorbent paper, for example of cellulose wadding also called "tissue paper ", crepe of grammage between 12 and 30 g / m 2 , provided with protuberances which are obtained by embossing.
En effet le gaufrage donne du bouffant à la feuille et il induit une amélioration de l'absorption des liquides, du toucher et de la douceur. On a cherché à augmenter davantage la capacité d'absorption en créant des feuilles multicouches obtenues en associant au moins deux couches, aussi appelées plis, constitués chacun d'au moins une desdites feuilles gaufrées.Indeed, the embossing gives bulk to the sheet and it induces improved absorption of liquids, touch and sweetness. We tried to further increase the capacity absorption by creating multilayer sheets obtained by associating at least two layers, also called folds, made up each of at least one of said embossed sheets.
Deux modes de gaufrage et assemblage des plis sont couramment mis en oeuvre selon les caractéristiques désirées du produit final.Two modes of embossing and assembling the plies are commonly implemented according to the desired characteristics of the final product.
Le premier est connu dans le domaine sous la désignation "nested" ou à emboítement. Il consiste, d'abord, à gaufrer chacun des plis séparément de manière à former en surface des protubérances généralement sensiblement tronconiques ou en troncs de pyramide. Ensuite on dépose de la colle sur le sommet des protubérances de l'un des plis, et on dispose les plis de façon que les faces présentant les protubérances viennent en vis à vis, les protubérances de l'un entre les protubérances de l'autre. On assemble enfin les plis de telle sorte que les protubérances ayant été encollées viennent s'emboíter entre les protubérances de l'autre pli. Ainsi les deux plis sont liés par des points de colle entre les sommets des protubérances d'un pli et des zones non gaufrées entre les protubérances de l'autre pli. On réalise une structure dont les vides ainsi ménagés sont propres à assurer à la feuille une absorption améliorée. En outre, les faces extérieures ont un toucher lisse et moelleux en raison des zones en creux formées par le dos des protubérances. Cette technique est illustrée par le brevet US-A-3.867.225.The first is known in the field under the designation "nested" or interlocking. It consists, first, of embossing each folds separately so as to form on the surface protrusions generally substantially frustoconical or in pyramid trunks. Then we put glue on the top protrusions of one of the folds, and the folds are arranged so that the faces having the protrusions face each other, the protuberances of one between the protuberances of the other. We finally assemble the folds so that the protrusions having been glued come to fit between the protrusions of the other fold. So the two folds are linked by glue dots between the vertices of the protrusions of a fold and non- embossed between the protrusions of the other fold. We realize a structure whose voids thus formed are suitable for ensuring the leaf improved absorption. In addition, the exterior faces have a smooth, fluffy feel due to the recessed areas formed by the back of the protuberances. This technique is illustrated by patent US-A-3,867,225.
Le second mode d'assemblage est connu dans le domaine sous la désignation pointes/pointes. Il se distingue du précédent par la disposition relative des deux plis. Ceux-ci, après qu'ils ont été gaufrés séparément, sont amenés l'un sur l'autre de façon à faire coïncider les sommets des protubérances. Les plis sont liés entre eux par les sommets des protubérances, pointes contre pointes. Cette technique est illustrée par le brevet US-A-3.414.459.The second method of assembly is known in the field under the designation spikes / spikes. It differs from the previous by the relative arrangement of the two folds. These, after they have have been embossed separately, are brought together so that to make the vertices of the protrusions coincide. The folds are linked between them by the tops of the protrusions, points against tips. This technique is illustrated by the patent US Patent 3,414,459.
Quand on considère les réalisations pratiques de ces structures, qu'elles soient du type "nested" ou pointes/pointes, les protubérances obtenues lors du gaufrage sont le plus souvent réalisées de manière à être réparties selon un motif.When we consider the practical achievements of these structures, whether they are of the "nested" or point / point type, the protrusions obtained during embossing are most often made so as to be distributed according to a pattern.
D'une manière générale, on connaít plusieurs types de motifs et/ou d'association de motifs.In general, we know several types of patterns and / or combination of patterns.
Afin de disposer d'un papier tissue présentant un aspect textile, il a notamment déjà été proposé de réaliser un motif de fond dit à haute densité de protubérances.In order to have a tissue paper with an appearance textile, it has in particular already been proposed to produce a pattern of bottom said to high density of protuberances.
Un exemple d'un tel produit est décrit et représenté dans le brevet EP-B1-0.426.548.An example of such a product is described and represented in the Patent EP-B1-0,426,548.
Selon les différents modes de réalisation connus d'un tel type de papier à motif de fond à haute densité de protubérances, chacune de ces protubérances est de forme générale tronconique, chaque tronc de cône étant formé par un picot homologue appartenant à un cylindre de gaufrage. Chaque picot gravé sur le cylindre présente un angle au sommet inférieur ou égal à 60° lui conférant une forme globalement pointue. According to the various known embodiments of such a type of background pattern paper with high protuberance density, each of these protuberances is of generally frustoconical shape, each truncated cone being formed by a homologous spike belonging to an embossing cylinder. Each pin engraved on the cylinder has a vertex angle less than or equal to 60 ° giving a generally pointed shape.
La hauteur des picots est par exemple comprise entre 0,4 mm et 0,6 mm, le choix de cette hauteur totale étant un compromis en fonction de la densité des picots qui est en fonction inverse de la hauteur des picots.The height of the pins is for example between 0.4 mm and 0.6 mm, the choice of this total height being a compromised according to the density of the pins which is a function reverse of the height of the pins.
Dans le but notamment d'améliorer l'aspect du produit, on a aussi proposé des motifs décoratifs constitués par des séries de protubérances qui sont disposées au moins en partie selon des courbes, des portions de courbes ou de droites - ou bien des combinaisons de telles portions de courbes et/ou de droites. En particulier certaines desdites portions sont, au moins partiellement, parallèles entre elles. En particulier les protubérances forment des courbes fermées comprenant des cercles ou des portions de cercles éventuellement concentriques.With the particular aim of improving the appearance of the product, also proposed decorative patterns consisting of series of protrusions which are arranged at least in part according to curves, portions of curves or lines - or combinations of such portions of curves and / or lines. In in particular some of said portions are, at least partially, parallel to each other. In particular the protrusions form closed curves including circles or portions of circles, possibly concentric.
Dans le document WO-A-93/12293, on a proposé d'associer ces deux types de motifs.In document WO-A-93/12293, it has been proposed to associate these two types of patterns.
Ainsi, dans ce document, on propose une feuille complexe comportant l'association de deux plis dont l'un au moins des plis comporte un motif de fond à haute densité et de petites dimensions des protubérances, aussi appelé "micro-gaufrage", et un motif principal décoratif constitué par des séries de protubérances de plus grandes dimensions, et notamment de plus grande hauteur, aussi appelé "macro-gaufrage".So, in this document, we propose a complex sheet involving the association of two folds, at least one of which is folded features a high density background pattern and small dimensions of the protrusions, also called "micro-embossing", and a main decorative motif consisting of series of protrusions of larger dimensions, and in particular more great height, also called "macro-embossing".
Les macro-protubérances constituant le motif principal décoratif ont une densité inférieure à 20 protubérances par cm2 et sont combinées avec les micro-protubérances du motif de fond qui ont une densité supérieure à 30 par cm2 et de préférence supérieure ou égale à 40 par cm2.The macro-protuberances constituting the main decorative motif have a density of less than 20 protuberances per cm 2 and are combined with the micro-protrusions of the background motif which have a density of more than 30 per cm 2 and preferably greater than or equal to 40 per cm 2 .
En fonction des conditions de gaufrage, telles que la pression, la nature du contre-cylindre (caoutchouc ou rigide) gravé, on réalise des produits avec des macro-protubérances, par exemple de hauteur comprise entre 0,5 et 2,5 millimètres, et des micro-protubérances de hauteur comprise entre 0,1 et 0,3 mm. Ces hauteurs correspondent à celles que l'on peut mesurer sur le pli après son gaufrage, et non pas à la hauteur des picots du cylindre gravé de gaufrage.Depending on the embossing conditions, such as pressure, the nature of the counter-cylinder (rubber or rigid) engraved, we produce products with macro-protuberances, by example of height between 0.5 and 2.5 millimeters, and micro-protuberances of height between 0.1 and 0.3 mm. These heights correspond to those that can be measured on the crease after embossing, not at the height of the pins of the engraved embossing cylinder.
Le gaufrage, en augmentant l'épaisseur globale de la feuille, conduit à une amélioration de l'absorption des liquides, mais aussi de sa souplesse du fait de la rupture d'une partie des liaisons entre les fibres de l'ouate de cellulose. Le gaufrage entraíne ainsi généralement une perte de résistance à la déchirure.Embossing, increasing the overall thickness of the sheet, leads to improved absorption of liquids, but also its flexibility due to the rupture of part of the bonds between the fibers of the cellulose wadding. Embossing thus generally results in a loss of resistance to tear.
Pour des produits destinés à l'essuyage et réalisés en papier tissue crêpé du type "CWP" (Conventional Wet Pressed), la feuille peut contenir des additifs qui lui confèrent une résistance à la déchirure qui est accrue, notamment à l'état humide.For products intended for wiping and produced in crepe tissue paper of the "CWP" type (Conventional Wet Pressed), the sheet may contain additives which give it resistance to the tear which is increased, especially in the wet state.
Par rapport à un papier toilette, le gaufrage est en outre plus marqué car on souhaite obtenir une plus grande capacité d'absorption.In comparison to toilet paper, the embossing is also more marked because we want to obtain a higher capacity absorption.
L'invention vise à proposer une conception améliorée d'une feuille gaufrée comportant au moins un pli avec un motif de fond à micro-protubérances et permettant notamment, mais pas uniquement, son association avec un motif à macro-protubérances.The invention aims to propose an improved design of a embossed sheet having at least one fold with a background pattern to micro-protrusions and allowing in particular, but not only, its association with a pattern with macro-protuberances.
L'invention vise à améliorer les performances et caractéristiques techniques de la feuille dans le cas d'une association de micro-protubérances et de macro-protubérances, et à améliorer l'aspect final de la feuille en faisant mieux apparaítre le motif à macro-protubérances qui, selon l'état de la technique, est "noyé" dans le motif de fond et est grandement "aplati" en empêchant de plus de retrouver le relief et l'effet molletonné.The invention aims to improve performance and technical characteristics of the sheet in the case of a association of micro-protuberances and macro-protuberances, and improve the final appearance of the sheet by doing better appear the pattern with macro-protuberances which, depending on the state of the technique, is "embedded" in the background pattern and is greatly "flattened" by preventing more to find the relief and the effect fleece.
Dans ce but, l'invention propose une feuille gaufrée composée d'au moins un pli d'ouate de cellulose crêpée de grammage compris entre 12 et 30 g/m2 du type comportant un motif de gaufrage comportant au moins une première série de protubérances formées en saillie sur une face du pli et dont la densité est supérieure à 20 protubérances par cm2, caractérisée en ce que chaque protubérance de la première série comporte une embase en forme de tronc de polyèdre et un tronçon d'extrémité libre aplati à bords arrondis.To this end, the invention provides an embossed sheet composed of at least one ply of creped cellulose wadding weighing between 12 and 30 g / m 2 of the type comprising an embossing pattern comprising at least a first series of protuberances formed projecting on one side of the fold and whose density is greater than 20 protuberances per cm 2 , characterized in that each protuberance of the first series comprises a base in the form of a polyhedron trunk and a flat end section flattened with edges rounded.
Selon d'autres caractéristiques de la feuille :
- l'embase est un tronc de polyèdre ;
- l'embase est un tronc de pyramide ;
- l'embase est un tronc de pyramide régulière à base rectangulaire ;
- chaque face latérale de l'embase forme un angle, par rapport à la hauteur du tronc de pyramide, qui est compris entre 30° et 45°, de préférence entre 35° et 45° ;
- le tronçon d'extrémité libre de la protubérance comporte une zone centrale sensiblement plane et parallèle au plan général de la feuille et qui est reliée aux faces latérales de l'embase par des zones de raccordement de profil arrondi ;
- la hauteur totale des protubérances est comprise entre 0,05 mm et 0,5 mm ;
- la densité des protubérances est comprise entre 30 et 80 par cm2 ;
- les protubérances de la première série appartiennent à un motif de fond, et en ce que ledit au moins un pli comporte une seconde série de protubérances, associée à la première série pour constituer un motif principal, notamment décoratif, dont la hauteur en relief est supérieure à la hauteur des protubérances de la première série ;
- la feuille est une feuille multiplis absorbante à au moins deux plis d'ouate de cellulose, caractérisée en ce qu'elle comporte au moins un pli constitué selon l'invention, lesdites protubérances étant tournées vers l'intérieur de la feuille ;
- le motif principal est formé d'alignements de protubérances, les protubérances du motif de fond étant disposées entre lesdits alignements.
- the base is a polyhedron trunk;
- the base is a trunk of a pyramid;
- the base is a regular pyramid trunk with rectangular base;
- each lateral face of the base forms an angle, with respect to the height of the trunk of the pyramid, which is between 30 ° and 45 °, preferably between 35 ° and 45 °;
- the free end section of the protuberance comprises a central zone which is substantially planar and parallel to the general plane of the sheet and which is connected to the lateral faces of the base by connection zones of rounded profile;
- the total height of the protrusions is between 0.05 mm and 0.5 mm;
- the density of the protuberances is between 30 and 80 per cm 2 ;
- the protrusions of the first series belong to a background pattern, and in that said at least one fold comprises a second series of protrusions, associated with the first series to constitute a main pattern, in particular decorative, whose height in relief is greater at the height of the protrusions of the first series;
- the sheet is an absorbent multi-ply sheet with at least two plies of cellulose wadding, characterized in that it comprises at least one ply formed according to the invention, said protuberances being turned towards the inside of the sheet;
- the main pattern is formed by protuberance alignments, the protrusions of the background pattern being disposed between said alignments.
L'invention propose aussi un cylindre gravé pour le gaufrage d'au moins un pli appartenant à une feuille gaufrée selon l'invention, du type comportant une série de picots pour former les protubérances appartenant à ladite première série, caractérisé en ce que chaque picot comporte une embase en forme de tronc de polyèdre et un tronçon d'extrémité libre aplati.The invention also provides an engraved cylinder for the embossing of at least one fold belonging to an embossed sheet according to the invention, of the type comprising a series of pins for form the protrusions belonging to said first series, characterized in that each pin has a base in shape of polyhedron trunk and a flattened free end section.
Selon d'autres caractéristiques du cylindre :
- l'embase est un tronc de polyèdre ;
- l'embase est un tronc de pyramide ;
- chaque face latérale de l'embase forme un angle, par rapport à la hauteur du tronc de pyramide, qui est compris entre 30° et 45° ;
- la hauteur totale de chaque picot est comprise entre 0,4
et 0,6 mm ; - l'embase est un tronc de pyramide régulière à base rectangulaire dont la largeur est parallèle au sens marche du cylindre ;
- l'embase est un tronc de pyramide régulière à base rectangulaire dont la largeur est parallèle au sens travers du cylindre ;
- le tronçon d'extrémité libre du picot comporte une zone centrale sensiblement plane qui est reliée aux faces latérales de l'embase par des zones de raccordement de profil arrondi.
- the base is a polyhedron trunk;
- the base is a trunk of a pyramid;
- each lateral face of the base forms an angle with respect to the height of the trunk of the pyramid, which is between 30 ° and 45 °;
- the total height of each pin is between 0.4 and 0.6 mm;
- the base is a regular pyramid trunk with rectangular base, the width of which is parallel to the running direction of the cylinder;
- the base is a regular pyramid trunk with rectangular base, the width of which is parallel to the transverse direction of the cylinder;
- the free end section of the pin has a substantially planar central zone which is connected to the lateral faces of the base by connection zones of rounded profile.
L'invention propose aussi un procédé de fabrication d'une feuille selon l'invention, caractérisé en ce qu'il consiste à gaufrer un premier pli d'ouate de cellulose sur un cylindre gravé selon le motif de fond selon l'invention de façon à augmenter son épaisseur de moins de 50%, puis à gaufrer ensuite ledit pli selon ledit motif principal. Ledit pli peut être associé à au moins un second pli qui peut être préalablement gaufré.The invention also provides a method of manufacturing a sheet according to the invention, characterized in that it consists in embossing a first ply of cellulose wadding on a cylinder engraved according to the background pattern according to the invention so as to increase its thickness of less than 50%, then embossing said fold according to said main motif. Said fold can be associated with at least one second fold which can be embossed beforehand.
D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels :
- la figure 1 est une vue en section par un plan vertical selon le sens marche, qui représente schématiquement une feuille gaufrée à deux plis dont le pli inférieur comporte une association d'un motif de fond et d'un motif principal ;
- la figure 2 est une vue de détail selon la flèche F2 de la figure 1 qui illustre l'association du motif de fond avec un exemple de motif principal ;
- la figure 3 est une vue développée d'une partie de la surface gravée d'un cylindre de gaufrage conforme aux enseignements de l'invention ;
- la figure 4 est une vue de détail à plus grande échelle de l'un des picots de la figure 3 ;
- les figures 5
et 6 sont des vues en section selon les lignes 5-5 et 6-6 de la figure 4 ; - la figure 7 est une vue en perspective du picot représenté aux figures 4 à 6 ;
- les figures 8 à 11 sont des vues similaires à celles des figures 3 à 6 qui illustrent un deuxième mode de réalisation d'un cylindre gravé conforme aux enseignements de l'invention pour la réalisation du motif de fond ;
- la figure 12 est une vue schématique illustrant une machine pour la réalisation d'une feuille complexe réalisée conformément aux enseignements de l'invention.
- Figure 1 is a sectional view through a vertical plane in the direction of travel, which schematically shows an embossed sheet with two folds, the lower fold comprises a combination of a background pattern and a main pattern;
- Figure 2 is a detail view along arrow F2 of Figure 1 which illustrates the association of the background pattern with an example of main pattern;
- Figure 3 is a developed view of part of the etched surface of an embossing cylinder according to the teachings of the invention;
- Figure 4 is a detail view on a larger scale of one of the pins of Figure 3;
- Figures 5 and 6 are sectional views along lines 5-5 and 6-6 of Figure 4;
- Figure 7 is a perspective view of the spike shown in Figures 4 to 6;
- Figures 8 to 11 are views similar to those of Figures 3 to 6 which illustrate a second embodiment of an engraved cylinder according to the teachings of the invention for the realization of the background pattern;
- Figure 12 is a schematic view illustrating a machine for producing a complex sheet produced in accordance with the teachings of the invention.
Dans la description qui va suivre, des éléments identiques, similaires ou analogues seront désignés par les mêmes chiffres de référence. On utilisera, à titre non limitatif et pour faciliter la description et la compréhension des revendications, une orientation verticale de bas en haut en considérant notamment la figure 1.In the description which follows, identical elements, similar or analogous will be designated by the same numbers reference. We will use, without limitation and to facilitate the description and understanding of the claims, a vertical orientation from bottom to top, especially considering the figure 1.
On a représenté à la figure 1 un exemple de réalisation d'une feuille complexe de papier gaufré, qui est ici une feuille de papier constituée de deux plis, supérieur 12 et inférieur 14, qui sont assemblés selon la technique connue en mode dit "Nested".There is shown in Figure 1 an embodiment of a complex sheet of embossed paper, which here is a sheet of paper made up of two folds, upper 12 and lower 14, which are assembled according to the known technique in so-called "Nested" mode.
Chaque pli de papier absorbant est en ouate de cellulose
crêpée et la feuille 10 est destinée à tous types de produits
d'hygiène ou de ménage. Each fold of absorbent paper is made of cellulose wadding
crêpe and
L'ouate de cellulose, dont le grammage est compris entre 12 et 30 g/m2, est de préférence du type obtenu par pressage humide conventionnel, dit CWP.The cellulose wadding, whose grammage is between 12 and 30 g / m 2 , is preferably of the type obtained by conventional wet pressing, known as CWP.
Plus particulièrement, la feuille de papier représentée à la figure 1 est par exemple destinée à être incorporée dans un rouleau de papier essuie-tout.More specifically, the sheet of paper shown in Figure 1 is for example intended to be incorporated into a paper towel roll.
Le pli inférieur 14 est un pli réalisé conformément aux
enseignements de l'invention et, dans ce mode de réalisation, il
comporte un motif de fond constitué par des micro-protubérances
16 et un motif principal, constitué par une série de macro-protubérances
18.The
Comme on peut le voir à la figure 2, la conception et la
densité des micro-protubérances 14 agencées en motif régulier
confère au fond du pli 14 un aspect de textile, tandis que les
macro-protubérances 18 sont ici agencées en motif régulier,
notamment sous la forme de cercles concentriques. On observe
que le motif de fond est disposé entre les alignements formant le
motif principal. Notamment le motif de fond remplit la zone
comprise entre deux cercles concentriques. L'espace entre deux
macro-protubérances adjacentes le long des alignements formant
les cercles ne comporte pas de micro-protubérances du motif de
fond, visibles.As can be seen in Figure 2, the design and
density of
Le nombre de macro-protubérances est inférieur à 20 par cm2. Il permet l'association des plis en mode "Nested". Dans ce cas, il est de préférence compris entre 5 et 15 par cm2, et plus particulièrement entre 5 et 9.The number of macro-protuberances is less than 20 per cm 2 . It allows the association of folds in "Nested" mode. In this case, it is preferably between 5 and 15 per cm 2 , and more particularly between 5 and 9.
Comme cela sera expliqué par la suite, la liaison entre le pli
supérieur 12 et le pli inférieur 14 est obtenue, de préférence, par
collage des sommets 22 des macro-protubérances 18 avec des
parties de la face interne, ici inférieure, en vis-à-vis 24 et 26 du
pli supérieur 12.As will be explained later, the connection between the fold
upper 12 and the
Conformément aux enseignements de l'invention, chaque
protubérance 16 du motif de fond du pli inférieur 14 comporte une
embase en forme de tronc de polyèdre 28 et un tronçon
d'extrémité libre aplati 30 à bords arrondis.In accordance with the teachings of the invention, each
Selon une technique connue, les micro-protubérances 16
sont obtenues par gaufrage du pli inférieur 14 au moyen d'un
cylindre gravé de gaufrage 32 dont une partie de la surface
externe cylindrique convexe 34 est illustrée schématiquement
notamment à la figure 3.According to a known technique, the micro-protrusions 16
are obtained by embossing the
Comme on peut le voir sur la figure 3, la surface 34
comporte une série de picots 36 formés en relief et dont la forme
ou profil externe est homologue de celle que l'on désire obtenir
pour chaque protubérance correspondante 16 du pli 14 de la
feuille 10.As can be seen in Figure 3, the
On a indiqué à la figure 3, par une flèche MD, le sens
marche du cylindre, c'est-à-dire le sens de défilement de sa
surface lorsqu'il est en rotation au cours de l'opération de
gaufrage, et le sens transversal, par une flèche CD, qui
correspond à la direction perpendiculaire au sens marche MD et
parallèle à l'axe de rotation du cylindre gravé 32.We indicated in Figure 3, by an arrow MD, the direction
cylinder run, i.e. the direction of travel of its
surface when in rotation during the operation of
embossing, and the transverse direction, by a CD arrow, which
corresponds to the direction perpendicular to the direction of travel MD and
parallel to the axis of rotation of the engraved
Dans le mode de réalisation illustré à la figure 3, toute la
surface gravée 34 du cylindre 32 est recouverte de picots 36 qui
sont adjacents entre eux et qui, dans l'exemple représenté, sont
tous de même forme et de mêmes dimensions. Dans la mesure où
Ils entrent dans le cadre de l'invention, on peut prévoir des picots
de formes différentes.In the embodiment illustrated in FIG. 3, all of the
engraved
Chaque picot 36 est ici constitué par une embase 38 en
forme de tronc de pyramide à base rectangulaire et par un
sommet ou tronçon d'extrémité libre 40 qui est aplati.Each
La base rectangulaire de chaque picot 36 est délimitée par
deux petits côtés 42 ou largeurs 42, qui sont ici parallèles au
sens travers CD et par deux grands côtés 44 (ou longueurs 44)
qui sont ici parallèles au sens marche MD.The rectangular base of each
Chaque picot 36 est délimité latéralement par deux petites
faces opposées sensiblement trapézoïdales 46 dont la base est
un petit côté 42, et par deux grandes faces opposées
sensiblement trapézoïdales 48 dont la base est un grand côté 44.Each
Comme on peut le voir notamment aux figures 5 et 6,
chaque face latérale sensiblement trapézoïdale 46, 48 est inclinée
par rapport à la hauteur, ou axe central A, du picot 36, d'un angle
alpha qui est ici égal à environ 45°, c'est-à-dire que le demi-angle
au sommet de l'embase 38 en forme de tronc de pyramide est ici
égal à 45°.As we can see in particular in Figures 5 and 6,
each substantially
Le tronçon d'extrémité libre, ou sommet 40, est
globalement un méplat sensiblement plan et perpendiculaire à
l'axe central A et il est de préférence relié aux faces latérales
triangulaires 46 et 48 par des bords arrondis 50.The free end section, or
Dans le mode de réalisation représenté aux figures 3 à 7,
la hauteur totale H de chaque picot 36 est égale à environ 0,6 mm
tandis que la largeur 42 de sa base rectangulaire est égale à 1,4
mm et la longueur 44 est égale à 1,8 mm.In the embodiment shown in FIGS. 3 to 7,
the total height H of each
La largeur de son sommet 40, qui est de forme générale
rectangulaire en vue de dessus et comme on peut le voir à la
figure 4, est égale à environ 0,2 mm tandis que la longueur du
sommet 40 est égale à environ à 0,6 mm.The width of its top 40, which is of general shape
rectangular in top view and as we can see on the
Figure 4, is approximately 0.2 mm while the length of the
Comme on peut le voir à la figure 3, tous les picots 36 sont
adjacents et sont formés à la surface 34 sous la forme de séries
de picots alignés selon le sens marche MD.As can be seen in FIG. 3, all of the
Tous les picots 36 d'une même série sont ainsi adjacents
entre eux par leurs largeurs 42 et ils sont adjacents aux picots de
la ligne suivante par leurs longueurs 44.All the
De plus, comme on peut le voir à la figure 3, les picots 36
d'une série sont décalés selon le sens marche, c'est-à-dire ici
parallèlement à leur longueur 44 d'un demi-pas, c'est-à-dire de la
moitié de la longueur 44 de la base rectangulaire d'un picot 36,
soit ici 1,8 mm, deux sommets 40 de deux picots consécutifs et
alignés appartenant à la même série étant bien entendu espacés
de 1,8 mm. In addition, as can be seen in Figure 3, the
Si l'on se réfère aux dimensions mentionnées précédemment,
la densité des picots 36 est sensiblement égale à 40 picots
par cm2.If we refer to the dimensions mentioned above, the density of the
Il est bien entendu possible de réduire la hauteur totale de
chaque picot 36, en fonction de l'application, et d'augmenter de
manière inversement proportionnelle la densité des picots.It is of course possible to reduce the total height by
each
L'inclinaison des faces latérales 46 et 48 peut être accentuée, en réduisant la valeur de l'angle alpha jusqu'à 30°, cette valeur limite demeurant supérieure à la valeur du demi-angle au sommet d'un picot conventionnel de forme tronconique, nettement plus pointu. De préférence l'angle reste compris entre 35° et 45°. Les bords du méplat sont arrondisThe inclination of the lateral faces 46 and 48 can be accentuated, by reducing the value of the alpha angle up to 30 °, this limit value remaining greater than the value of the half-angle at the top of a conventional frustoconical picot, much sharper. Preferably the angle remains between 35 ° and 45 °. The edges of the flat are rounded
Le rayon R de chaque bord arrondi, ou congé 50, est par
exemple ici égal à 0,5 mm.The radius R of each rounded edge, or
Dans le mode de réalisation représenté aux figures 8 à 11,
la forme et les dimensions de chaque picot 36 sont globalement
identiques à celles mentionnées précédemment en référence au
premier mode de réalisation mais les picots, comme on peut le
voir à la figure 8, sont alignés par série de picots adjacents par
leurs largeurs 42, et ceci selon le sens travers CD du cylindre
gravé 32.In the embodiment shown in FIGS. 8 to 11,
the shape and dimensions of each
Sans sortir du cadre de l'invention, les dimensions du
sommet ou extrémité libre 40 peuvent être plus importantes.Without departing from the scope of the invention, the dimensions of the
vertex or
Ainsi, chaque sommet, ou extrémité libre, peut être un
méplat rectangulaire dont la largeur est égale à 0,4 mm et la
longueur à 0,8 mm, le rayon R de chaque bord arrondi 50 étant ici
sensiblement égale à 0,1 mm, tandis que la hauteur H et les
autres dimensions des largeurs 42 et longueurs 44 sont
inchangées.Thus, each vertex, or free end, can be a
rectangular flat whose width is equal to 0.4 mm and the
length 0.8 mm, the radius R of each
Le gaufrage du motif de fond, c'est-à-dire la réalisation des
micro-protubérances 16 à l'aide de l'un des cylindres gravés du
type de ceux représentés aux figures 3 à 11, est réalisé avec une
pression de gaufrage modérée, c'est-à-dire en contrôlant
l'augmentation d'épaisseur totale du pli 14 résultant du gaufrage. The embossing of the background pattern, i.e. the realization of the
Cette augmentation est de préférence inférieure ou égale à
l'épaisseur initiale du pli 14, c'est-à-dire de la feuille d'ouate de
cellulose crêpée avant gaufrage.This increase is preferably less than or equal to
the initial thickness of the
De préférence, cette augmentation de hauteur est inférieure à la moitié de l'épaisseur de la feuille.Preferably, this increase in height is less than half the thickness of the sheet.
Après cette étape de gaufrage avec une pression modérée,
le pli inférieur 14 comporte des picots 16 dont la hauteur est
comprise entre 0,05 mm et 0,5 mm.After this embossing step with moderate pressure,
the
Comme cela sera expliqué par la suite, le pli qui vient
d'être gaufré pour réaliser le motif de fond avec les micro-protubérances
16 est ensuite gaufré à nouveau pour réaliser le
motif principal constitué par des macro-protubérances en cercles
concentriques 18.As will be explained later, the fold which comes
to be embossed to make the background pattern with
La pression de gaufrage est alors suffisante pour permettre la formation de zones annulaires bombées entre les cercles concentriques.The embossing pressure is then sufficient to allow the formation of curved annular zones between the circles concentric.
On a représenté schématiquement à la figure 12 une
installation 60 pour le gaufrage et l'assemblage avec encollage
des deux plis, supérieur 12 et inférieur 14, en vue de la
réalisation de la feuille complexe 10.There is shown schematically in Figure 12 a
De manière connue, la feuille d'ouate de cellulose crêpée
constituant le pli 12 passe tout d'abord entre un premier cylindre
gravé 62 et un cylindre associé 64 pour la réalisation du motif de
gaufrage de ce pli 12. Le cylindre 64 peut être à revêtement
caoutchouc ou similaire, ou bien à revêtement rigide tel que
l'acier ou le papier, mais il est alors pourvu de cavités
complémentaires des protubérances du cylindre gravé 62.In known manner, the creped cellulose wadding sheet
constituting the
De la même manière, la feuille d'ouate de cellulose
constituant le pli inférieur 14 passe d'abord dans une unité de
micro-gaufrage 66 comportant le cylindre gravé 32 dont la surface
cylindrique convexe gravée 34 est conforme aux enseignements
de l'invention et qui coopère avec un cylindre associé 68 pour la
réalisation du motif de fond comportant les micro-protubérances
16. De préférence le cylindre 68 est en caoutchouc. Similarly, the cellulose wadding sheet
constituting the
Le pli 14 avec son micro-gaufrage 16 passe ensuite entre
un troisième cylindre gravé 70 dont le motif de gravure
correspond à la formation des macro-protubérances en cercles
concentriques 18 et qui coopère avec un cylindre caoutchouc
associé 72.The
Le pli inférieur 14 avec son micro-graufrage 16 et son
macro-gaufrage 18 passe ensuite en regard du cylindre gravé
supérieur 62 pour permettre l'association des deux plis, en étant
passé au préalable devant un cylindre d'encollage 74 appartenant
à une unité 76 d'encollage, de conception connue, qui dépose de
la colle sur les sommets de niveau le plus élevé par rapport au
cylindre 70. Il s'agit des macro-protubérances 18.The
Enfin, les deux plis 12 et 14 passent devant un cylindre 78,
dit cylindre marieur, qui va assurer l'association par serrage.Finally, the two
L'aspect visuel obtenu pour le pli comportant le motif de fond micro-gaufré et le motif principal de décoration macro-gaufré, est nettement amélioré par rapport à un produit de l'état de la technique sans le motif de fond.The visual aspect obtained for the fold comprising the motif of micro-embossed background and the main macro-embossed decoration motif, is significantly improved compared to a state product of technique without the background motif.
En particulier, on a appliqué le procédé à un motif principal composé de protubérances formant des cercles concentriques. Comme cela est représenté sur la figure 2, le motif de fond occupe l'espace compris entre les cercles et autres éléments concentriques. Cependant l'espace entre deux protubérances adjacentes sur les cercles eux-mêmes est insuffisant pour loger une micro-protubérance. A cette condition et celles du procédé on obtient un produit dont la surface vue du côté motif de fond présente l'aspect d'anneaux en relief concentriques formant des coussinets toriques.In particular, the method was applied to a main motif composed of protuberances forming concentric circles. As shown in Figure 2, the background pattern occupies the space between circles and other elements concentric. However the space between two protrusions adjacent on the circles themselves is insufficient to accommodate a micro-protuberance. On this condition and those of the process we obtains a product whose surface seen from the background pattern side has the appearance of concentric raised rings forming O-rings.
En outre des tests ont été effectués qui montrent de façon surprenante que la résistance à la déchirure d'un tel produit n'est pas plus faible que celle d'un produit sans ce motif de fond.In addition, tests have been carried out which show surprising that the tear resistance of such a product is not weaker than that of a product without this background pattern.
Les résultats de ces tests sont résumés dans le tableau ci-dessous. The results of these tests are summarized in the table below.
La première ligne donne les valeurs d'une feuille à deux plis non gaufrés. Il s'agit des valeurs de référence. Les mesures ont été faites selon les normes standards dans ce domaine.The first line gives the values of a sheet of two non-embossed pleats. These are the reference values. Measures were made according to standard standards in this area.
La seconde ligne donne les valeurs d'un produit A de l'art antérieur dont les deux plis ont été gaufrés avec le seul motif principal. Il s'agit d'un essuie-tout commercialisé sous la marque "Okay" en France et présentant un motif composé de cercles concentriques comme à la figure 2, mais sans le motif de fond. Les macro-protubérances sont au nombre de 7,6 par cm2 en moyenne.The second line gives the values of a product A of the prior art, the two folds of which have been embossed with the sole main motif. It is a paper towel marketed under the brand "Okay" in France and presenting a pattern made up of concentric circles as in figure 2, but without the background pattern. Macro-protrusions are 7.6 on average per cm 2 .
La troisième ligne donne les valeurs d'un produit B réalisé conformément à l'invention, c'est à dire avec le même motif de gaufrage principal que le produit A ci-dessus et les mêmes conditions de gaufrage, mais avec en outre le motif de fond selon l'invention, réparti comme à la figure 2, et comportant 40 micro-protubérances par cm2.The third line gives the values of a product B produced according to the invention, that is to say with the same main embossing pattern as the product A above and the same embossing conditions, but with the same pattern according to the invention, distributed as in FIG. 2, and comprising 40 micro-protuberances per cm 2 .
On constate que les pertes en résistance par rapport aux
valeurs de référence sont du même ordre, alors que l'on
s'attendait à une chute en résistance supérieure en raison du
traitement supplémentaire pour réaliser le motif de fond.
-25% : -52%
-46%
+84%
-24% : -53%
-48%
+86%
-25%: -52%
-46%
+ 84%
-24%: -53%
-48%
+ 86%
On a par ailleurs procédé à une autre série d'essais pour
vérifier l'efficacité de la diffusion des liquides. Le test a consisté
à mesurer le temps de diffusion d'un liquide aqueux selon les
directions sens marche MD et sens travers CD de la feuille de
l'invention B par rapport à un produit de l'art antérieur A. Le
tableau ci-dessous reprend les valeurs de diffusion en secondes
sur des distances mesurées en cm, à la fois sens MD et sens
CD.
Les résultats montrent que le produit B selon l'invention présente une diffusion mieux répartie, sens marche et sens travers.The results show that product B according to the invention has a better distribution, direction and direction through.
Des essais comparatifs ont été réalisés.Comparative tests have been carried out.
On a réalisé trois produits à partir d'un même papier tissue
de caractéristiques suivantes
Grammage deux plis : 45 G/m2
Epaisseur : 0,20 mm pour une feuille à deux plis
Résistances, MD : 786 N/m, CD : 538 N/m
Résistance humide : CD 136 N/m.We produced three products from the same tissue paper with the following characteristics
Two ply weight: 45 G / m 2
Thickness: 0.20 mm for a two-ply sheet
Resistors, MD: 786 N / m, CD: 538 N / m
Wet strength: CD 136 N / m.
On a mesuré d'abord la résistance à l'état humide sens travers d'un produit présentant un gaufrage de fond constitué de micro-protubérances obtenues sur un cylindre dont les picots sont de forme tronconique avec un angle au sommet légèrement inférieur à 30° La densité des picots du motif de fond était de 37 par cm2.The resistance across the wet state was measured first of a product having a bottom embossing consisting of microprotrusions obtained on a cylinder whose pins are of frustoconical shape with an apex angle slightly less than 30 °. The density of the pins of the background pattern was 37 per cm 2 .
On a mesuré la résistance à l'état humide sens travers d'un produit avec le motif de l'art antérieur A (7,6 macro-protubérances par cm2). The resistance in the wet cross direction of a product was measured with the pattern of the prior art A (7.6 macro-protuberances per cm 2 ).
On a mesuré la résistance à l'état humide d'un produit B réalisé conformément à l'invention.The wet strength of product B was measured produced in accordance with the invention.
Les valeurs sont respectivement de 77, 67 et 75 N/m. On constate donc que l'invention permet de réaliser un produit avec un motif principal et un motif de fond sans nuire à sa résistance.The values are 77, 67 and 75 N / m respectively. We therefore notes that the invention makes it possible to produce a product with a main motif and a background motif without compromising its resistance.
Enfin, on constate que pour un même papier tissue de départ et à résistance et épaisseur égales, une feuille conforme à l'invention est moins rigide qu'une feuille avec un simple motif de gaufrage principal. La rigidité peut être estimée au moyen d'un test panel de consommateurs ou bien à l'aide d'un modèle fondé sur des mesures de paramètres physiques appropriés.Finally, we note that for the same tissue paper of starting and equal strength and thickness, a sheet conforms to the invention is less rigid than a sheet with a simple pattern of main embossing. Rigidity can be estimated using a consumer panel test or using a well-founded model on measurements of appropriate physical parameters.
Claims (22)
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES00403285.0T ES2547459T3 (en) | 2000-11-24 | 2000-11-24 | Sheet of creped absorbent paper, roller for embossing and manufacturing process of said sheet |
| EP00403285.0A EP1209289B1 (en) | 2000-11-24 | 2000-11-24 | Creped absorbent paper sheet, creping cylinder and process for making such a sheet |
| US10/181,977 US20030021953A1 (en) | 2000-11-24 | 2001-11-15 | Absorbent creped paper sheet comprising a background pattern and a main decorative pattern, and embossing roll and method for making such a sheet |
| CA002398309A CA2398309A1 (en) | 2000-11-24 | 2001-11-15 | Absorbent creped paper sheet comprising a background pattern and a main decorative pattern, and embossing roll and method for making such a sheet |
| PCT/FR2001/003583 WO2002042558A2 (en) | 2000-11-24 | 2001-11-15 | Absorbent creped paper |
| NO20023221A NO332710B1 (en) | 2000-11-24 | 2002-07-03 | Absorbent, creped sheet of paper comprising a background sample and a decorative main sample as well as embossing roll and method for making such a sheet |
| US11/860,179 US20080020180A1 (en) | 2000-11-24 | 2007-09-24 | Absorbent Creped Paper Sheet Comprising a Background Pattern and a Main Decorative Pattern, and Embossing Roll and Method for Making Such a Sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP00403285.0A EP1209289B1 (en) | 2000-11-24 | 2000-11-24 | Creped absorbent paper sheet, creping cylinder and process for making such a sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1209289A1 true EP1209289A1 (en) | 2002-05-29 |
| EP1209289B1 EP1209289B1 (en) | 2015-09-09 |
Family
ID=8173951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00403285.0A Expired - Lifetime EP1209289B1 (en) | 2000-11-24 | 2000-11-24 | Creped absorbent paper sheet, creping cylinder and process for making such a sheet |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US20030021953A1 (en) |
| EP (1) | EP1209289B1 (en) |
| CA (1) | CA2398309A1 (en) |
| ES (1) | ES2547459T3 (en) |
| NO (1) | NO332710B1 (en) |
| WO (1) | WO2002042558A2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006136186A1 (en) * | 2005-06-21 | 2006-12-28 | Sca Hygiene Products Gmbh | Multi-ply tissue paper, paper converting device and method for producing a multi-ply tissue paper |
| WO2007107167A1 (en) * | 2006-03-17 | 2007-09-27 | Sca Hygiene Products Gmbh | Method for producing a multi-ply paper product, tissue paper product and apparatus for producing a multi-ply paper product |
| EP1873295A2 (en) * | 2006-06-26 | 2008-01-02 | Fleissner GmbH | Calendar roll for embossing and/or compressing textiles |
| WO2008125149A1 (en) | 2006-07-26 | 2008-10-23 | Sca Hygiene Products Gmbh | Multi-ply tissue paper product, paper converting device for a multi-ply tissue paper product and method for producing a multi-ply tissue paper product |
| US8920905B2 (en) | 2008-12-09 | 2014-12-30 | Sca Hygiene Products Ab | Fibrous product with a rastered embossing and method for producing same |
| KR20160072180A (en) * | 2013-10-16 | 2016-06-22 | 조지아-퍼시픽 컨수머 프로덕츠 엘피 | Method for reducing the bulk and increasing the density of a tissue product |
Families Citing this family (37)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK1270196T3 (en) * | 2001-06-29 | 2006-07-31 | Georgia Pacific France | Process for making an embossed sheet of cellulose wadding, the product obtained and stamping roll |
| EP1331308A1 (en) * | 2002-01-25 | 2003-07-30 | Georgia-Pacific France | A creped sheet of absorbent paper, a roll for the embossing and a process incorporating the same |
| ITFI20020053A1 (en) * | 2002-03-29 | 2003-09-29 | Perini Fabio Spa | METHOD AND DEVICE FOR THE PRODUCTION OF EMBOSSED AND MANUFACTURED MATERIAL OBTAINED WITH THIS METHOD |
| ES2371547T3 (en) * | 2003-03-07 | 2012-01-05 | Georgia-Pacific France | PRODUCT IN GOBRADO ABSORBENT PAPER. |
| US20050050767A1 (en) * | 2003-06-06 | 2005-03-10 | Hanson Kyle M. | Wet chemical processing chambers for processing microfeature workpieces |
| US7320821B2 (en) * | 2003-11-03 | 2008-01-22 | The Procter & Gamble Company | Three-dimensional product with dynamic visual impact |
| TWI348902B (en) | 2004-03-23 | 2011-09-21 | Kao Corp | Topsheet for absorbent article |
| ITFI20040102A1 (en) | 2004-04-29 | 2004-07-29 | Guglielmo Biagiotti | METHOD AND DEVICE FOR THE PRODUCTION OF TISSUE PAPER |
| US7413629B2 (en) * | 2004-05-21 | 2008-08-19 | The Procter & Gamble Company | Process for producing deep-nested embossed paper products |
| US7435313B2 (en) * | 2004-05-21 | 2008-10-14 | The Procter & Gamble Company | Process for producing deep-nested embossed paper products |
| US7799169B2 (en) * | 2004-09-01 | 2010-09-21 | Georgia-Pacific Consumer Products Lp | Multi-ply paper product with moisture strike through resistance and method of making the same |
| ITMI20050554A1 (en) * | 2005-04-04 | 2006-10-05 | Giovanni Gambini | MULTILAYER PAPER |
| US7597777B2 (en) * | 2005-09-09 | 2009-10-06 | The Procter & Gamble Company | Process for high engagement embossing on substrate having non-uniform stretch characteristics |
| MX2008002458A (en) * | 2005-09-22 | 2008-04-03 | Sca Hygiene Prod Gmbh | Paper product and method of producing a paper product. |
| ITFI20050218A1 (en) * | 2005-10-20 | 2007-04-21 | Guglielmo Biagiotti | IMPROVEMENT OF METHODS AND DEVICES FOR THE PRODUCTION OF TISSUE PAPERS AND PAPER VEIL FROM THESE DERIVATIVES |
| FR2914221B1 (en) * | 2007-03-28 | 2009-10-02 | Georgia Pacific France Soc Par | ABSORBENT SHEET WITH SINGLE EMBOSSING PATTERN |
| FR2918598B1 (en) * | 2007-07-13 | 2011-07-15 | Georgia Pacific France | ABSORBENT PAPER SHEET CREPE, EMBOSSING CYLINDER OF SUCH SHEET AND EMBOSSING METHOD |
| GB2454820B (en) * | 2007-11-13 | 2009-10-07 | Hadley Ind Overseas Holdings L | Sheet material |
| FR2928383B1 (en) | 2008-03-06 | 2010-12-31 | Georgia Pacific France | WAFER SHEET COMPRISING A PLY IN WATER SOLUBLE MATERIAL AND METHOD FOR PRODUCING SUCH SHEET |
| AU2008365143A1 (en) * | 2008-12-09 | 2010-06-17 | Sca Hygiene Products Ab | Embossing roll for producing fibrous products with a rastered embossing, device employing such embossing roll and arranging embossing protrusions on such embossing roll |
| JP5426690B2 (en) | 2009-12-28 | 2014-02-26 | 株式会社フジクラ | Mold and manufacturing method thereof |
| FR2976473B1 (en) * | 2011-06-15 | 2013-07-12 | Georgia Pacific France | ABSORBENT PAPER ROLL WITH LOW DIMENSIONS |
| ITFI20110135A1 (en) * | 2011-07-07 | 2013-01-08 | Futura Spa | DEVICE AND METHOD FOR THE MANUFACTURING OF MATERIAL CARATCEO NASTRIFORME. |
| TWM429700U (en) * | 2012-01-19 | 2012-05-21 | Benq Materials Corp | Engraving device |
| EP2884001B1 (en) * | 2013-12-16 | 2019-09-18 | Rolltec Cilindro LTDA | Improvement in cylinder for tissue paper lamination |
| CN104723612A (en) * | 2013-12-20 | 2015-06-24 | 罗尔特克西林德罗有限公司 | Modification of roller for thin paper lamination |
| EP3228745B1 (en) * | 2014-12-01 | 2021-10-27 | Kikuo Yamada | Method for producing paper sheet |
| BR112019004599A2 (en) | 2016-09-30 | 2019-06-11 | Kimberly Clark Co | article for cleaning. |
| EP3339012A1 (en) * | 2016-12-20 | 2018-06-27 | Boegli-Gravures S.A. | Method and embossing structure for maximizing pressure buildup at rotational embossing of foils |
| USD859007S1 (en) * | 2017-06-13 | 2019-09-10 | Gpcp Ip Holdings Llc | Paper product |
| USD871082S1 (en) * | 2017-06-15 | 2019-12-31 | Kimberly-Clark Worldwide, Inc. | Wiping article |
| KR102480250B1 (en) * | 2017-06-30 | 2022-12-21 | 다이오세이시가부시끼가이샤 | toilet paper |
| USD923943S1 (en) * | 2017-07-28 | 2021-07-06 | Kimberly-Clark Worldwide, Inc. | Tissue product with embossing pattern |
| USD899101S1 (en) * | 2018-12-26 | 2020-10-20 | Productos Familia S.A. | Paper towel with embossing pattern |
| USD983220S1 (en) * | 2020-08-31 | 2023-04-11 | Kimberly-Clark Worldwide, Inc. | Package with surface ornamentation or display screen with icon |
| USD976951S1 (en) * | 2021-02-16 | 2023-01-31 | Kimberly-Clark Worldwide, Inc. | Package with surface ornamentation or display screen with icon |
| USD998350S1 (en) * | 2022-04-04 | 2023-09-12 | Kimberly-Clark Worldwide, Inc. | Paper sheet |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0379767A1 (en) * | 1987-09-21 | 1990-08-01 | Mitsui Petrochemical Industries, Ltd. | Emboss roll |
| FR2743824A1 (en) * | 1996-01-22 | 1997-07-25 | James River | MIXED EMBOSSING LAMINATE SHEET |
| EP0642614B1 (en) * | 1993-03-29 | 1997-08-13 | The James River Corporation | Paper towel with dual level diagonal infundibulate striae of slitted elongate hexagonal bosses |
| DE19734414A1 (en) * | 1997-08-08 | 1999-02-25 | Sca Hygiene Prod Gmbh | Process for making a relatively soft product as well as the product itself |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4333979A (en) * | 1980-08-18 | 1982-06-08 | Kimberly-Clark Corporation | Soft, bulky, lightweight nonwoven web and method of producing; the web has both fused spot bonds and patterned embossments |
| FR2728152B1 (en) * | 1994-12-16 | 1997-01-24 | Kaysersberg Sa | COMBINED EMBOSSED ABSORBENT PAPER |
-
2000
- 2000-11-24 EP EP00403285.0A patent/EP1209289B1/en not_active Expired - Lifetime
- 2000-11-24 ES ES00403285.0T patent/ES2547459T3/en not_active Expired - Lifetime
-
2001
- 2001-11-15 US US10/181,977 patent/US20030021953A1/en not_active Abandoned
- 2001-11-15 WO PCT/FR2001/003583 patent/WO2002042558A2/en active Application Filing
- 2001-11-15 CA CA002398309A patent/CA2398309A1/en not_active Abandoned
-
2002
- 2002-07-03 NO NO20023221A patent/NO332710B1/en not_active IP Right Cessation
-
2007
- 2007-09-24 US US11/860,179 patent/US20080020180A1/en not_active Abandoned
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0379767A1 (en) * | 1987-09-21 | 1990-08-01 | Mitsui Petrochemical Industries, Ltd. | Emboss roll |
| EP0642614B1 (en) * | 1993-03-29 | 1997-08-13 | The James River Corporation | Paper towel with dual level diagonal infundibulate striae of slitted elongate hexagonal bosses |
| FR2743824A1 (en) * | 1996-01-22 | 1997-07-25 | James River | MIXED EMBOSSING LAMINATE SHEET |
| DE19734414A1 (en) * | 1997-08-08 | 1999-02-25 | Sca Hygiene Prod Gmbh | Process for making a relatively soft product as well as the product itself |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2005333449B2 (en) * | 2005-06-21 | 2011-04-14 | Essity Operations Mannheim GmbH | Multi-ply tissue paper, paper converting device and method for producing a multi-ply tissue paper |
| WO2006136186A1 (en) * | 2005-06-21 | 2006-12-28 | Sca Hygiene Products Gmbh | Multi-ply tissue paper, paper converting device and method for producing a multi-ply tissue paper |
| US7871692B2 (en) | 2005-06-21 | 2011-01-18 | Sca Hygiene Products Gmbh | Multi-ply tissue paper, paper converting device and method for producing a multi-ply tissue paper |
| WO2007107167A1 (en) * | 2006-03-17 | 2007-09-27 | Sca Hygiene Products Gmbh | Method for producing a multi-ply paper product, tissue paper product and apparatus for producing a multi-ply paper product |
| EP1873295A2 (en) * | 2006-06-26 | 2008-01-02 | Fleissner GmbH | Calendar roll for embossing and/or compressing textiles |
| EP1873295A3 (en) * | 2006-06-26 | 2009-07-29 | Fleissner GmbH | Calendar roll for embossing and/or compressing textiles |
| US8119223B2 (en) | 2006-07-26 | 2012-02-21 | Sca Hygiene Products Gmbh | Multi-ply tissue paper product, paper converting device for a multi-ply tissue paper product and method for producing a multi-ply tissue paper product |
| AU2007351022B2 (en) * | 2006-07-26 | 2011-08-25 | Sca Hygiene Products Gmbh | Multi-ply tissue paper product, paper converting device for a multi-ply tissue paper product and method for producing a multi-ply tissue paper product |
| WO2008125149A1 (en) | 2006-07-26 | 2008-10-23 | Sca Hygiene Products Gmbh | Multi-ply tissue paper product, paper converting device for a multi-ply tissue paper product and method for producing a multi-ply tissue paper product |
| RU2448836C2 (en) * | 2006-07-26 | 2012-04-27 | Ска Хайджин Продактс Гмбх | Multilayer product of thin paper, device converting paper to for multilayer product of thin paper and method for production of multilayer product of thin paper |
| US8920905B2 (en) | 2008-12-09 | 2014-12-30 | Sca Hygiene Products Ab | Fibrous product with a rastered embossing and method for producing same |
| KR20160072180A (en) * | 2013-10-16 | 2016-06-22 | 조지아-퍼시픽 컨수머 프로덕츠 엘피 | Method for reducing the bulk and increasing the density of a tissue product |
| EP3057787A4 (en) * | 2013-10-16 | 2017-04-12 | Georgia-Pacific Consumer Products LP | Method for reducing the bulk and increasing the density of a tissue product |
| US10006172B2 (en) | 2013-10-16 | 2018-06-26 | Gpcp Ip Holdings Llc | Method for reducing the bulk and increasing the density of a tissue product |
| US10253459B2 (en) | 2013-10-16 | 2019-04-09 | Gpcp Ip Holdings Llc | Method for reducing the bulk and increasing the density of a tissue product |
| US10669674B2 (en) | 2013-10-16 | 2020-06-02 | GPCP IP Holding LLC | Method for reducing the bulk and increasing the density of a tissue product |
Also Published As
| Publication number | Publication date |
|---|---|
| NO332710B1 (en) | 2012-12-17 |
| US20030021953A1 (en) | 2003-01-30 |
| CA2398309A1 (en) | 2002-05-30 |
| EP1209289B1 (en) | 2015-09-09 |
| ES2547459T3 (en) | 2015-10-06 |
| NO20023221L (en) | 2002-09-13 |
| US20080020180A1 (en) | 2008-01-24 |
| WO2002042558A3 (en) | 2002-09-06 |
| NO20023221D0 (en) | 2002-07-03 |
| WO2002042558A2 (en) | 2002-05-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1209289B1 (en) | Creped absorbent paper sheet, creping cylinder and process for making such a sheet | |
| EP0679122B1 (en) | Method for embossing a sheet with one or more plies | |
| CA2458952C (en) | Absorbent paper product with improved embossing | |
| EP1101866B2 (en) | Creped and embossed absorbant paper sheet, embossing roll and embossing process | |
| EP1319748B1 (en) | Multiply sheet of absorbent paper | |
| EP0876537B1 (en) | Laminated sheet with multiple embossed patterns | |
| EP1670991B1 (en) | Sheet of absorbent paper with improved relief | |
| EP1047546B1 (en) | Sheet of embossed absorbent paper, and a method and device for producing same | |
| EP1073797B1 (en) | Embossed absorbent paper sheet | |
| EP1159487B1 (en) | Absorbent paper product comprising two or three plies | |
| EP1472411B1 (en) | Absorbent embossed paper sheet, embossing cylinder, and method for the production thereof | |
| EP2132382B1 (en) | Absorbent sheet with unique embossing pattern | |
| WO2001086066A2 (en) | Absorbent paper product with asymmetric structure | |
| EP1236830B1 (en) | Creped and embossed absorbent paper, embossing cylinder and process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
| 17P | Request for examination filed |
Effective date: 20020823 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| 17Q | First examination report despatched |
Effective date: 20040407 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: GEORGIA-PACIFIC FRANCE |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCA TISSUE FRANCE |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20150424 |
|
| GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCA TISSUE FRANCE |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 748233 Country of ref document: AT Kind code of ref document: T Effective date: 20150915 Ref country code: CH Ref legal event code: EP |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: SCA TISSUE FRANCE |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2547459 Country of ref document: ES Kind code of ref document: T3 Effective date: 20151006 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 60049068 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 16 |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: FP |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: TRGR |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20151210 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20160111 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 60049068 Country of ref document: DE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20151124 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150909 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151130 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151130 |
|
| 26N | No opposition filed |
Effective date: 20160610 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150909 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 17 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151124 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FI Payment date: 20161021 Year of fee payment: 17 Ref country code: DE Payment date: 20161020 Year of fee payment: 17 Ref country code: FR Payment date: 20161024 Year of fee payment: 17 Ref country code: NL Payment date: 20161024 Year of fee payment: 17 Ref country code: GB Payment date: 20161027 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20161024 Year of fee payment: 17 Ref country code: ES Payment date: 20161024 Year of fee payment: 17 Ref country code: IT Payment date: 20161025 Year of fee payment: 17 Ref country code: AT Payment date: 20161021 Year of fee payment: 17 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20161114 Year of fee payment: 17 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150909 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20151130 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 60049068 Country of ref document: DE |
|
| REG | Reference to a national code |
Ref country code: SE Ref legal event code: EUG |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20171201 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 748233 Country of ref document: AT Kind code of ref document: T Effective date: 20171124 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20171124 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171124 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171125 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171124 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20180731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171124 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180602 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171130 Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171201 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171124 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171125 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20171124 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: UEP Ref document number: 748233 Country of ref document: AT Kind code of ref document: T Effective date: 20150909 |