WO2008107845A2 - Produits papetiers en rouleau profondément gaufrés à espacement réduit sur les bords sens machine - Google Patents

Produits papetiers en rouleau profondément gaufrés à espacement réduit sur les bords sens machine Download PDF

Info

Publication number
WO2008107845A2
WO2008107845A2 PCT/IB2008/050787 IB2008050787W WO2008107845A2 WO 2008107845 A2 WO2008107845 A2 WO 2008107845A2 IB 2008050787 W IB2008050787 W IB 2008050787W WO 2008107845 A2 WO2008107845 A2 WO 2008107845A2
Authority
WO
WIPO (PCT)
Prior art keywords
embossing
machine direction
inches
paper
tracts
Prior art date
Application number
PCT/IB2008/050787
Other languages
English (en)
Other versions
WO2008107845A3 (fr
Inventor
James Paul Farwig
Nicholas Jerome Ii Wilke
Original Assignee
The Procter & Gamble Company
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to CA002679861A priority Critical patent/CA2679861A1/fr
Priority to MX2009009297A priority patent/MX2009009297A/es
Publication of WO2008107845A2 publication Critical patent/WO2008107845A2/fr
Publication of WO2008107845A3 publication Critical patent/WO2008107845A3/fr

Links

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
    • 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
    • B31F2201/0784—Auxiliary operations
    • B31F2201/0794—Cutting

Definitions

  • This invention is directed to a roll paper product having highly defined embossments and wherein the roll paper product is such that it has the appearance of tightly packed, or non-corrugated, edges.
  • BACKGROUND OF THE INVENTION Consumers often make conclusions regarding the quality of a product based on the product's appearance. For example, a consumer may make a judgment about a product based on its appearance while the product is on the shelf. However, many consumers do not stop opening about a product once they take the product home. Many consumers may make a second judgment about the product based on the product's appearance again once the product is being used in that consumer's home. That being said, providing a positive visual experience to the consumer may provide a variety of obstacles for a manufacturer. For instance, increasing the visibility of one positive visual aspect of a product may cause another positive visual aspect of that product to decrease.
  • a roll paper towel product that has deep, crisp, and clear embossments tends to convey a product that is highly absorbent, strong, and soft.
  • a roll paper towel product in which the surfaces formed from the plies of paper being wound around an axis, or machine direction edges, of the roll do not have many gaps or spaces is perceived by the consumer to provide a good value because it is often thought that a roll paper product having less corrugation has more sheets than a roll paper product having more corrugation.
  • this roll paper product tends to cause the edges of the roll to have a higher level of corrugation than roll paper products with less deep embossing and the same number of sheets.
  • the present invention relates to a roll paper product comprising a machine direction, cross machine direction, two machine direction edges, and one or more plies of a fibrous structure having a pattern embossed on the surface thereof, wherein the embossing pattern comprises a plurality of embossments having a height, one or more first tracts having a cross machine direction width, and one or more second tracts having a cross machine direction width, wherein the first tract has the lower percent unembossed than the second tract; and wherein the roll paper product has been cut such that at least one machine direction edge is tangential to a first tract.
  • the present invention relates to a method for cutting a paper log into rolls of paper product wherein the method comprises: providing a paper log comprising a machine direction, a cross machine direction, and one or more plies of a fibrous structure; dividing the surface of the embossed paper plies into two or more tracts along the machine direction; measuring the percent of unembossed areas within each tract and identifying one or more first tracts having a cross machine direction width and one or more second tracts having a cross machine direction width wherein the one or more first tracts have a lower percent of unembossed areas than the one or more second tracts; and cutting the paper log to form roll paper products comprising a machine direction, a cross machine direction, one or more plies of an embossed paper product, and 2 machine direction edges; wherein the paper log is cut such that at least one machine direction edge is tangential to a first tract.
  • the present invention relates to a roll paper product comprising a machine direction, cross machine direction, two machine direction edges, and one or more plies of a cellulosic fibrous structure having a pattern embossed on the surface thereof: wherein the embossing pattern comprises a plurality of embossments having a height of from about 900 ⁇ m to about 1800 ⁇ m, one or more first tracts having a cross machine direction width, and one or more second tracts having a cross machine direction width, wherein the first tracts has a lower percent unembossed than the second tracts and wherein a first tract and a second tract comprise an Unemboss to Emboss factor of from about 1 to about 2.3; wherein the roll paper product has been cut such that at least one edge is tangential to from about 1/3 to about 2/3 of the cross machine direction width of a first tract; and wherein the roll paper product has a length of from about 3 inches to about 13 inches.
  • Figure 1 is a schematic side view of one embodiment of an apparatus that can be used to perform the deep-nested embossing of the present invention.
  • Figure 2 is an enlarged side view of the nip formed between the embossing rolls of the apparatus shown in Figure 1.
  • Figure 3 is a schematic side view of one embodiment of an apparatus that can be used to perform the deep-nested embossing of the present invention.
  • Figure 4 is a schematic side view of an alternative apparatus that can be used to perform the deep-nested embossing of the present invention.
  • Figure 5 is a side view of the gap between two engaged emboss cylinders of the apparatus for deep-nested embossing of the present invention.
  • Figure 6 is a side view of an embodiment of the embossed paper product of the present invention.
  • Figure 7 is a plan view of an embodiment of one section of an emboss pattern that may be applied to the surface of the embossed paper product of the present invention.
  • Figure 8A is a plan view of an embodiment of one section of an emboss pattern that may be applied to the surface of the embossed paper product produced of the present invention.
  • Figure 8B is a plan view of an embodiment of one section of an emboss pattern that may be applied to the surface of the embossed paper product produced by the process of the present invention.
  • Figure 9A is a plan view of an embodiment of a paper log that may be used by the process of the present invention.
  • Figure 9B is a front view of an embodiment of a paper log that may be used by the process of the present invention.
  • Figure 1OA is a plan view of an embodiment of a paper roll that has been cut from the paper log of Figures 9A-B along lines 550-550 and 560-560.
  • Figure 1OB is a plan view of an embodiment of a paper roll that has been cut from the paper log of Figures 9A-B along lines 550-550 and 560-560.
  • Figure HA is a photograph of an embodiment of an edge of a roll of paper product that has been cut by the process of the present invention.
  • Figure HB is a photograph of an embodiment of an edge of a roll of paper product that has been cut by the process of the present invention.
  • paper product refers to any formed, fibrous structure products, traditionally, but not necessarily, comprising cellulose fibers.
  • the paper products of the present invention may include tissue-towel paper products and toilet tissue products.
  • roll paper product refers to any paper product that is wound about an axis.
  • a roll paper product is provided by winding a paper product around a core.
  • ply or “plies”, as used herein, means an individual fibrous structure or sheet of fibrous structure, optionally to be disposed in a substantially contiguous, face-to-face relationship with other plies, forming a multi-ply fibrous structure. It is also contemplated that a single fibrous structure can effectively form two "plies” or multiple "plies", for example, by being folded on itself. In one embodiment, the ply has an end use as a tissue-towel paper product. A ply may comprise one or more wet-laid layers, air-laid layers, and/or combinations thereof. If more than one layer is used, it is not necessary for each layer to be made from the same fibrous structure.
  • the layers may or may not be homogenous within a layer.
  • the actual makeup of a fibrous structure product ply is generally determined by the desired benefits of the final tissue-towel paper product, as would be known to one of skill in the art.
  • the fibrous structure may comprise one or more plies of non-woven materials in addition to the wet- laid and/or air-laid plies.
  • fibrous structure means an arrangement of fibers produced in any papermaking machine known in the art to create a ply of paper.
  • Fiber means an elongate particulate having an apparent length greatly exceeding its apparent width. More specifically, and as used herein, fiber refers to such fibers suitable for a papermaking process.
  • the present invention contemplates the use of a variety of paper making fibers, such as, natural fibers, synthetic fibers, as well as any other suitable fibers, starches, and combinations thereof.
  • Paper making fibers useful in the present invention include cellulosic fibers commonly known as wood pulp fibers.
  • Applicable wood pulps include chemical pulps, such as Kraft, sulfite and sulfate pulps; mechanical pulps including groundwood, thermomechanical pulp; chemithermomechanical pulp; chemically modified pulps, and the like. Chemical pulps, are particularly well suited in tissue towel embodiments since they are known to those of skill in the art to impart a superior tactical sense of softness to tissue sheets made therefrom. Pulps derived from deciduous trees (hardwood) and/or coniferous trees (softwood) can be utilized herein. Such hardwood and softwood fibers can be blended or deposited in layers to provide a stratified web. Exemplary layering embodiments and processes of layering are disclosed in U.S. Patent Nos. 3,994,771 and 4,300,981.
  • fibers derived from non- wood pulp such as cotton linters, bagesse, and the like, can be used.
  • fibers derived from recycled paper which may contain any or all of the pulp categories listed above, as well as other non-fibrous materials such as fillers and adhesives used to manufacture the original paper product may be used in the present web.
  • fibers and/or filaments made from polymers, specifically hydroxyl polymers may be used in the present invention.
  • suitable hydroxyl polymers include polyvinyl alcohol, starch, starch derivatives, chitosan, chitosan derivatives, cellulose derivatives, gums, arabinans, galactans, and combinations thereof.
  • Machine Direction means the direction parallel to the flow of the fibrous structure through the papermaking machine and/or product manufacturing equipment.
  • Cross Machine Direction or “CD” means the direction perpendicular to the machine direction in the same plane of the fibrous structure and/or fibrous structure product comprising the fibrous structure.
  • Machine Direction pitch or “MD pitch” means the distance between the centers of two emboss protrusions that are adjacent and collinear in the machine direction.
  • Cross Machine Direction pitch or “CD pitch” means the distance between the centers of two emboss protrusions that are adjacent and collinear in the cross machine direction.
  • Machine Direction edge or “MD edge” means the surface of a roll paper product parallel to the machine direction that is formed as a result of the sheets of roll paper product being wound about an axis.
  • paper log refers to a long roll of paper that has not been cut into smaller rolls that are suitable for sale to consumers. Paper logs may be from about 80 inches to about 120 inches in length and from about 3 inches to about 8 inches in diameter. In one embodiment a paper log may be disposed around an inner core that may be made of any suitable material for supporting the paper log.
  • tract refers to one or more bands that divides an emboss pattern.
  • a tract comprises boundaries that are parallel in the machine direction.
  • embossing of webs such as the paper webs that are used to make paper products
  • Embossing of webs can provide improvements to the web such as increased bulk, improved water holding capacity, improved aesthetics and other benefits.
  • Both single ply and multiple ply (or multi-ply) webs are known in the art and can be embossed.
  • Multi-ply paper webs are webs that include at least two plies superimposed in face-to-face relationship to form a laminate.
  • a web is fed through a nip formed between juxtaposed generally axially parallel rolls or cylinders. Embossing protrusions on the rolls co7mpress and/or deform the web. If a multi-ply product is being formed, two or more plies are fed through the nip and regions of each ply are brought into a contacting relationship with the opposing ply. The embossed regions of the plies may produce an aesthetic pattern and provide a means for joining and maintaining the plies in face-to-face contacting relationship. Embossing is typically performed by one of two processes; knob-to-knob embossing or nested embossing.
  • Knob-to-knob embossing typically consists of generally axially parallel rolls juxtaposed to form a nip within which the embossing protrusions, or knobs, on opposing rolls are aligned to press the web between the faces of the aligned protrusions.
  • Nested embossing typically consists of embossing protrusions of one roll meshed in between the embossing protrusions of the other roll. Examples of knob-to- knob embossing and nested embossing are illustrated in the prior art by U.S. Pat. Nos.
  • Knob-to-knob embossing generally produces a web comprising very compressed areas and surrounding pillowed regions which can enhance the thickness of the product.
  • the pillows have a tendency to collapse under pressure due to lack of support. Consequently, the thickness benefit is typically lost during the balance of the converting operation and subsequent packaging, diminishing the quilted appearance and/or thickness benefit sought by the embossing.
  • Nested embossing has proven in some cases to be a more desirable process for producing products exhibiting a softer, more quilted appearance that can be maintained throughout the balance of the converting process, including packaging. As the two plies travel through the nip of the embossing rolls, the patterns are meshed together.
  • Nested embossing aligns the knob crests on the male embossing roll with the low areas on the female embossing roll.
  • the embossed sites produced on one side of the structure provide support for the uncontacted side of the structure and the structure between embossment sites.
  • Deep-nested embossing refers to embossing that utilizes paired emboss rolls, wherein the protrusions from the different emboss rolls are coordinated such that the protrusions of one roll fit into the spaces between the protrusions of the other emboss roll.
  • Exemplary deep-nested embossing techniques are described in U.S. Patent Nos. 5,686,168 and 5,294,475; U.S. Patent Application Ser. Nos. 11/059,986 and 10/700,131 and U.S. Patent Provisional Application Ser. No. 60/573,727 ' .
  • Exemplary high definition embossing techniques are described in U.S. Patent App. Ser. Nos. 11/516,892 and U.S. 10/952,119.
  • An exemplary process for embossing a web substrate in accordance with the present invention incorporates the use of a deep-nested embossment technology.
  • a tissue ply structure is embossed in a gap between two embossing rolls.
  • the embossing rolls may be made from any material known for making such rolls, including, without limitation, steel, rubber, elastomeric materials, and combinations thereof.
  • each embossing roll may be provided with a combination of emboss protrusions and gaps.
  • Each emboss protrusion comprises a base, a face, and one or more sidewalls.
  • Each emboss protrusion also has a height, h.
  • the height of the emboss protrusions may range from about 1.8 mm. (0.070 in.) to about 3.8 mm. (0.150 in.), preferably from about 2.0 mm. (0.080 in.) to about 3.3 mm. (0.130 in.).
  • Figure 1 shows one embodiment of the apparatus 10 of the present invention.
  • the apparatus 10 includes a pair of rolls, first embossing roll 20 and second embossing roll 30.
  • first embossing roll 20 and second embossing roll 30 are just exemplary embodiments and other embodiments are certainly contemplated.
  • the embossing rolls 20 and 30 of the embodiment shown in Figure 1 could be replaced with any other embossing members such as, for example, plates, cylinders or other equipment suitable for embossing webs.
  • additional equipment and steps that are not specifically described herein may be added to the apparatus and/or process of the present invention.
  • the embossing rolls 20 and 30 are disposed adjacent each other to provide a nip 40.
  • the rolls 20 and 30 are generally configured so as to be rotatable on an axis, the axes 22 and 32, respectively, of the rolls 20 and 30 are typically generally parallel to one another.
  • the apparatus 10 may be contained within a typical embossing device housing.
  • Each roll has an outer surface 25 and 35 comprising a plurality of first embossing protrusions 50 and second embossing protrusions 60 (shown in more detail in Figure 2) which are generally arranged in a non-random pattern.
  • the embossing rolls 20 and 30, including the respective surfaces 25 and 35 of the rolls 20 and 30 as well as the embossing protrusions 50 and 60, may be made out of any material suitable for the desired embossing process.
  • the first and second embossing rolls 20 and 30 provide a nip 40 through which a web 100 can pass.
  • a web 100 is made up of a single ply 80 and is shown passing through the nip 40 in the machine direction MD where it is embossed.
  • Figure 2 is an enlarged view of the portion of the apparatus 10 (identified by callout 2 in Figure 1.) The figure shows a more detailed view of the web 100 passing through the nip 40 between the first embossing roll 20 and the second embossing roll 30.
  • the first embossing roll 20 includes a plurality of first embossing protrusions 50 extending from the outer surface 25 of the first embossing roll 20.
  • the second embossing roll also includes a plurality of second embossing protrusions 60 extending outwardly from the outer surface 35 of the second embossing roll 30.
  • the embossing protrusions 50 and/or 60 are described as extending from a surface of an embossing member, the embossing protrusions may be integral with the surface of the embossing member or may be separate protrusions that are joined to the surface of the embossing member.)
  • the ply of the unconverted web 80 is passed through the nip 40, it is nested and macroscopically deformed by the intermeshing of the first embossing protrusions 50 and the second embossing protrusions 60.
  • the embossing shown is deep-nested embossing, as described herein, because the first embossing protrusions 50 and the second embossing protrusions 60 intermesh with each other, for example like the teeth of gears.
  • the resulting embossed web 100 is deeply embossed and nested, as will be described in more detail below, and includes plurality of undulations that can add bulk and caliper to the web 100.
  • Figure 3 shows an embodiment to the process of the present invention where a two ply product is produced where both plies are embossed.
  • the first ply 80 and second ply 90 and resulting web 100 are first joined together between marrying roll 70 and the first embossing roll 20.
  • the plies 80 and 90 can be joined together by any known means, but typically an adhesive application system is used to apply adhesive to one or both of the plies 80 and 90 prior to the plies being passed between the nip 75 formed between the marrying roll 70 and the first embossing roll 20.
  • the combined web 100 is then passed through the nip 40 formed between the first embossing roll 20 and the second embossing roll 30 where it is embossed.
  • the plies 80 and 90 are passed through the nip 40 formed between the first embossing roll 20 and the second embossing roll 30 where the plies are placed into contact with each other and embossed.
  • the combined web 100 is then passed through the nip 75 between the first embossing roll 20 and the marrying roll 70. This step is often used to ensure that the plies 80 and 90 of the web 100 are securely joined together before the web 100 is directed to further processing steps or winding.
  • the number of plies is not critical and can be varied, as desired.
  • one of skill in the art would know to add or remove the equipment necessary to provide and/or combine the different number of plies.
  • the plies of a multi-ply roll paper product need not be the same in make-up or other characteristics.
  • the different plies can be made from different materials, such as from different fibers, different combinations of fibers, natural and synthetic fibers or any other combination of materials making up the base plies.
  • the resulting web 100 may include one or more plies of a cellulosic web and/or one or more plies of a web made from non-cellulose materials including polymeric materials, starch based materials and any other natural or synthetic materials suitable for forming fibrous webs.
  • one or more of the plies may include a nonwoven web, a woven web, a scrim, a film a foil or any other generally planar sheet-like material.
  • one or more of the plies can be embossed with a pattern that is different that one or more of the other plies or can have no embossments at all.
  • the embossing protrusions 50 and 60 of the embossing members engage such that the distal end 110 of the first embossing protrusions 50 extend into the space 220 between the second embossing protrusions 60 of the second embossing roll 30 beyond the distal end 210 of the second embossing protrusions 60.
  • the distal ends 210 of the second embossing protrusions 60 should also extend into the space 120 between the first embossing protrusions 50 of the first embossing roll 20 beyond the distal end 110 of the first embossing protrusions 50.
  • the depth of the engagement E may vary depending on the level of embossing desired on the final product and can be any distance greater than zero.
  • Typical deep-nested embodiments have a engagement E greater than about 0.01 mm (0.000394 inches), greater than about 0.05 mm (0.001969 inches), greater than about 1.0 mm (0.03937 inches), greater than about 1.25 mm (0.049213 inches), greater than about 1.5 mm (0.059055), greater than about 2.0 mm (0.07874 inches), greater than about 3.0 mm (0.11811 inches), greater than about 4.0 mm (0.15748 inches), greater than about 5.0 mm (0.19685 inches), between about 0.01 mm (0.000394 inches) and about 5.0 mm (0.19685 inches) or any number within this range.
  • At least some of the first embossing protrusions 50 and/or the second embossing protrusions 60 may have at least one transition region 130 between the face and the sidewalls of the protrusion that has a radius of curvature of curvature r.
  • the transition region 130 is disposed between the distal end of the embossing element and the sidewall of the embossing element.
  • the radius of curvature of curvature r is typically greater than about 0.075 mm (0.002953 inches). Other embodiments have radii of greater than 0.1 mm (0.003937 inches), greater than 0.25 mm (0.009843 inches), greater than about 0.5 mm (0.019685 inches), between about 0.075 mm (0.002953 inches) and about 0.5 mm (0.019685 inches) or any number within this range.
  • the radius of curvature of curvature r of any particular transition region is typically less than about 1.8 mm (0.070866 inches).
  • embossing protrusions with transition regions 130 having radii of less than about 1.5 mm (0.059055 inches), less than about 1.0 mm (0.03937 inches), between about 1.0 mm (0.03937 inches) and about 1.8 mm (0.070866 inches) or any number within the range.
  • Figure 5 shows an example of two intermeshing embossing plates 21 and 31, the information set forth herein with respect to the embossing protrusions 50 and 60 is applicable to any type of embossing platform or mechanism from which the embossing protrusions can extend, such as rolls, cylinders, plates and the like.
  • the "rounding" of the transition region 130 typically results in a circular arc rounded transition region 130 from which a radius of curvature of curvature is determined as a traditional radius of curvature of the arc.
  • the present invention also contemplates transition region configurations which approximate an arc rounding by having the edge of the transition region 130 removed by one or more straight line or irregular cut lines.
  • the radius of curvature of curvature r is determined by measuring the radius of curvature of a circular arc that includes a portion which approximates the curve of the transition region 130.
  • At least a portion of the distal end of one or more of the embossing protrusions other than the transition regions 130 can be generally non-planar, including for example, generally curved or rounded.
  • the entire surface of the embossing element spanning between the sidewalls 115 or 215 can be non-planar, for example curved or rounded.
  • the non-planar surface can take on any shape, including, but not limited to smooth curves or curves, as described above, that are actually a number of straight line or irregular cuts to provide the non-planar surface.
  • One example of such an embossing element is the embossing element 62 shown in Figure 5.
  • the resulting paper may be provided with a smoother and/or softer look and feel.
  • the embossed fibrous structure 100 comprises one or more plies, wherein at least one of the plies comprises a plurality of discrete embossments 310 and a plurality of linear embossments 315 wherein the difference in elevation between the apex of the discrete embossments 310 and linear embossments 315 comprises an embossment height 320.
  • the embossments take on a shape that is similar to the embossing protrusions used to form the embossments, thus, for the purposes of this application, the shapes and sizes of the embossing protrusions described herein can also be used to describe suitable embossments.
  • the shape of the embossments may not correspond exactly to the shape of any particular embossing element or pattern of embossing protrusions and thus, embossments of shapes and sizes different than those described herein with regard to the embossing protrusions are contemplated.
  • the ply or plies which are embossed are embossed in a deep-nested embossing process such that the embossments exhibit an embossment height h of at least about 650 ⁇ m, at least about 800 ⁇ m, at least about 900 ⁇ m, at least about 1300 ⁇ m, at least about 1550 ⁇ m, and at least about 1800 ⁇ m.
  • the embossment height is from about 650 ⁇ m to about 4000 ⁇ m. In another embodiment, the embossment height is from about 800 ⁇ m to about 3000 ⁇ m. In another embodiment, the embossment height is from about 900 ⁇ m to about 1800 ⁇ m. In another embodiment, the embossment height is from about 1300 ⁇ m to about 1550 ⁇ m.
  • the embossment height h of the fibrous structure 100 is measured by the Embossment Height Test method set forth below.
  • Figures 7 and 8 show one embodiment of a portion of an exemplary embossing pattern 400 as it would appear on a paper web comprising a plurality of discrete embossments 310.
  • the diameter of the emboss protrusions used to form the discrete embossments 310 have a diameter D of from about 0.05 inches to about 0.20 inches.
  • the emboss protrusions used to form the embossments 410 have a diameter D of from about 0.06 inches (1.524 mm) to about 0.15 inches (3.81 mm).
  • the emboss protrusions used to form the emboss pattern 400 have a cross machine direction pitch P CD of from about 0.1 inches (2.54 mm) to about 0.25 inches (6.35 mm). In another embodiment, the emboss protrusions used to form the emboss pattern 400 have a P CD of from about 0.15 inches (3.81 mm) to about 0.2 inches (5.08 mm). In one embodiment, the emboss protrusions used to form the emboss pattern 400 have a machine direction pitch P MD of from about 0.1 inches (2.54 mm) to about 0.3 inches (7.62 mm). In another embodiment, the emboss protrusions used to form the emboss pattern 410 have a P MD of from about 0.13 (3.302 mm) inches to about 0.18 inches (4.572 mm).
  • the density of embossments and percentage of unembossed areas may be divided into tracts that are segmented in the machine direction.
  • To divide an emboss pattern 400 into one or more tracts it is first necessary to identify continuous unembossed elements. For the purpose of identifying continuous unembossed elements, a region that comprises embossments having similar spacing between embossments is said to not be a continuous unembossed element, and will have a percent unembossed (defined below) of zero.
  • a continuous unembossed element may be identified as any area having no embossments where two or more embossments (having the same spacing in the machine, and cross machine, direction as the embossments around that area) may have been, but are not, located.
  • Fig. 8A shows a nonlimiting example of an emboss pattern 400 that, in one embodiment, may be tessellated with like emboss patterns 400 to form a larger emboss pattern.
  • the continuous unembossed areas are any areas having no embossments, although two or more embossments (separated by similar spacing as the surrounding embossments) could have been placed in that space.
  • continuous unembossed areas are hexagons and are delineated by broken lines 430 and referred to as "trace lines.” Tract lines 440 are drawn parallel to the machine direction such that the tract lines 440 touch the outermost edges or points in the cross machine direction of the continuous unembossed areas 430. Each set of parallel tract lines forms a tract.
  • Sketch lines 410 are drawn around the emboss pattern 400 and serve as boundaries for calculating percent unemboss.
  • the area that the embossed and unembossed areas occupy (which is bounded by the sketch lines 410, trace lines 430, and tract lines 440) is measured by calculating the total area for each figure that is bounded by a set of lines sketch lines 410, trace lines 430 and tract lines 440 and has no lines sketch lines 410, trace lines 430, and tract lines 440 running through it.
  • the area of the unembossed area is divided by the sum of the embossed and unembossed areas for that tract to provide the percent unembossed. For a tract that has no unembossed areas then the percent unembossed is 0. Repeat this step for each tract. If two adjacent tracts have the same percentage unembossed then these tracts can be merged into one tract.
  • the tracts with the lowest percent unembossed are the first tracts.
  • the tracts with the highest percent unembossed are the second tracts.
  • the second tracts 442 are tracts that have a higher percent unembossed than the first tracts 441.
  • any tract with an intermediate percent unembossed are neither first nor second tracts.
  • the first tract has a percent unembossed from about 0% to about 40%. In another embodiment, the first tract has a percent unembossed from about 0% to about 25%. If there is only one tract, then there the log may be cut anywhere along the pattern.
  • the first tracts 441 are any tracts of the pattern which have the lowest percentage unembossed and the second tracts 442 are any tracts of the pattern which have the highest percentage unembossed.
  • the first tracts 441 have a percent unembossed of 0 and the second tracts 442 have a percent unembossed of about 23.8%.
  • An ideal cut line 443 is a line in a first tract that is furthest from the adjacent second tracts.
  • an ideal cut line 443 bisects a first tract 441 along the cross machine direction width W CD of the first tract.
  • a cut may be made between from about 1/4 to about 3/4 of the W CD of the first tract.
  • a cut is made between from about 1/3 to about 2/3 of the W CD of the first tract.
  • the second tracts 442 have the highest percentage unembossed.
  • the first tracts 441 have a higher percent unembossed than the second tracts 442.
  • U/E Unembossed to Emboss factor
  • U/E is the Unemboss to Emboss factor PUl is the percent unembossed of one first tract
  • PU2 is the percent unembossed of one second tract
  • U/E is from about 1 to about 2.3. In another embodiment the U/E is from about 1.5 to about 2.
  • Methods for cutting a paper log are well known in the art. During a typical papermaking process a paper log roll is processed and then cut into smaller rolls for retail sale. An exemplary process for cutting paper logs is shown in U.S. Pat. No. 5,038,647. When a highly embossed paper web log is cut into smaller rolls for retail sale the top and bottom surfaces of the rolls, or edges, may exhibit spaces or gaps between the plies that result from the embossing process.
  • This spacing effect is referred to herein as "gapping.” Without being limited by theory it is thought that cutting a paper log within tracts that have a low percent embossments (i.e., having a large number of unembossed areas) causes the differences in height between embossments and unembossed areas to become highly visually apparent on the edges of the resultant paper rolls in the form of gapping.
  • Figures 9A and 9B show an exemplary embodiment of a paper log 500 having the exemplary embossing pattern 400.
  • the log is wound around a core 510.
  • the log can be cut to smaller rolls of any length.
  • the length of the log that is to be cut may be any length.
  • the length of the log L log prior to cutting is from about 80 inches to about 120 inches.
  • the length of the log to be cut is from about 95 inches to about 105 inches.
  • Figs. 1OA and 1OB show an exemplary embodiment of a paper roll 600 that has been cut from the paper log 500 of Figures 9A and 9B having the exemplary embossing pattern 400 along lines 550-550 and 560-560 shown in Figures 9A and 9B.
  • the paper roll 600 has a surface 610 on which the embossing pattern 400 is disposed and an edge 620 on each of the axial surfaces.
  • the paper log 500 has been cut such that an edge 620 of the paper roll 600 is tangential to one or more first tracts 441.
  • the paper log 500 has been cut such that the edge 620 of the paper roll 600 is tangential from about 1/4 to about 3/4 of the cross machine direction width Wc D of one or more first tracts 441.
  • the paper log 500 has been cut such that the machine direction edge 620 of the paper roll 600 is tangential from about 1/3 to about 2/3 of the W CD of one or more first tracts. In another embodiment, the paper log 500 has been cut such that the machine direction edge 620 of the paper roll 600 is tangential from about the midpoint of the W CD of one or more first tracts 441. In one embodiment, the machine direction edge of the roll exhibits small spaces or gaps 630.
  • the length of the rolls L ⁇ that a paper log may be cut into can be any length that is less than the length of the original paper log. In one embodiment, the rolls are from about 3 inches to about 13 inches long. In another embodiment the rolls are from about 4 inches to about 11 inches long.
  • Embossment height is measured using an Optical 3D Measuring System MikroCAD compact for paper measurement instrument (the "GFM MikroCAD optical profiler instrument") and ODSCAD Version 4.0 software available from GFMesstechnik GmbH, Warthestra/te E21, D14513 Teltow, Berlin, Germany.
  • the GFM MikroCAD optical profiler instrument includes a compact optical measuring sensor based on digital micro-mirror projection, consisting of the following components: A) A DMD projector with 1024 x 768 direct digital controlled micro-mirrors.
  • G Measuring, control and evaluation computer.
  • the GFM MikroCAD optical profiler system measures the height of a sample using the digital micro-mirror pattern projection technique.
  • the result of the analysis is a map of surface height (Z) versus X-Y displacement.
  • the system should provide a field of view of 27 x 22 mm with a resolution of 21 ⁇ m.
  • the height resolution is set to between O.lO ⁇ m and l.OO ⁇ m.
  • the height range is 64,000 times the resolution.
  • the settings on the cold-light source are set to provide a reading of at least 2,800k on the display.
  • One fibrous structure useful in achieving the roll paper product of the present invention is the through- air-dried (TAD), differential density structure described in U.S. Patent No. 4,528,239.
  • TAD through- air-dried
  • a Fourdrinier, through- air-dried papermaking machine is used in the practice of this invention.
  • a slurry of papermaking fibers is pumped to the headbox at a consistency of about 0.15%.
  • the slurry consists of about 55% Northern Softwood Kraft fibers, about 30% unrefined Eucalyptus fibers and about 15% repulped product broke.
  • the fiber slurry contains a cationic polyamine-epichlorohydrin wet burst strength resin at a concentration of about 10.0 kg per metric ton of dry fiber, and carboxymethyl cellulose at a concentration of about 3.5 kg per metric ton of dry fiber.
  • Dewatering occurs through the Fourdrinier wire and is assisted by vacuum boxes.
  • the wire is of a configuration having 41.7 machine direction and 42.5 cross machine direction filaments per cm, such as that available from Asten Johnson known as a "786 wire”.
  • the embryonic wet web is transferred from the Fourdrinier wire to a TAD carrier fabric.
  • the sheet side of the carrier fabric consists of a continuous, patterned network of photopolymer resin, the pattern containing about 90 deflection conduits per inch.
  • the deflection conduits are arranged in an amorphous configuration, and the polymer network covers about 25% of the surface area of the carrier fabric.
  • the consistency of the web is about 65% after the action of the TAD dryers operating about a 254°C, before transfer onto the Yankee dryer.
  • An aqueous solution of creping adhesive consisting of animal glue and polyvinyl alcohol is applied to the Yankee surface by spray applicators at a rate of about 0.66 kg per metric ton of production.
  • the fiber consistency is increased to an estimated 95.5% before creping the web with a doctor blade.
  • the Yankee dryer is operated at about 157°C, and Yankee hoods are operated at about 120 0 C.
  • the dry, creped web is passed between two calendar rolls and rolled on a reel.
  • the resulting paper has a basis weight of about 23 grams per square meter (gsm) and has a MD stretch of about 21% and a CD stretch of about 9%.
  • the paper described above is then subjected to the deep-nested embossing process of this invention.
  • Two emboss rolls are engraved with complimentary, nesting embossing protrusions shown in Figures 1-6.
  • the rolls are mounted in the apparatus with their respective axes being generally parallel to one another.
  • the rolls are engraved such that the protrusions are in a non-random overall pattern having a multiple repeating pattern of the pattern shown in Figure 8.
  • the discrete embossing protrusions are frustaconical in shape, with a face (top or distal - i.e. away from the roll from which they protrude) diameter of about 2.79 mm and a floor (bottom or proximal - i.e. closest to the surface of the roll from which they protrude) diameter of about 4.12 mm.
  • the linear protrusions have a width similar to that of the discrete embossing protrusions of about 2.79 mm.
  • the height of the embossing protrusions on each roll is from about 2.718 mm to about 2.845 mm.
  • the planar projected area of each embossing pattern single pattern unit is about 25 cm .
  • the paper described above is fed through the engaged gap at a speed between 300 and 400 meters per minute. The resulting paper has an embossment height of greater than about 1000 ⁇ m.
  • the embossment pattern of the present example invention is that shown in Figs. 8 A and 8B.
  • the first tracts have a percentage unembossed of 0.
  • the second tracts have a percentage unembossed of about 23.8%.
  • the paper log is cut along the second tract and yields a product that has machine direction edges that are highly gapped as shown in Figure HA.
  • the cutting process of Example 1 is modified such that the paper of Example 1 is cut within a first tract.
  • the resulting paper yields a product with machine direction edges having relatively little gapping as shown in Figure 1 IB.
  • each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value.
  • a dimension disclosed as "40 mm” is intended to mean "about 40 mm”.

Landscapes

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

Abstract

La présente invention concerne un produit papetier en rouleau présentant un sens machine, un sens travers, deux bords sens machine, et un ou plusieurs plis d'une structure fibreuse présentant un motif gaufré sur la surface de celle-ci dans laquelle le motif de gaufrage présente une pluralité de gaufrages possédant une hauteur, un ou plusieurs premiers conduits présentant une largeur sens machine, et un ou plusieurs seconds conduits présentant une largeur sens machine. Le premier conduit présente un pourcentage non gaufré inférieur à celui du second conduit. Le produit papetier en rouleau a été découpé de telle sorte qu'au moins un bord sens machine est tangentiel à un premier conduit.
PCT/IB2008/050787 2007-03-05 2008-03-04 Produits papetiers en rouleau profondément gaufrés à espacement réduit sur les bords sens machine WO2008107845A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002679861A CA2679861A1 (fr) 2007-03-05 2008-03-04 Produits papetiers en rouleau profondement gaufres a espacement reduit sur les bords sens machine
MX2009009297A MX2009009297A (es) 2007-03-05 2008-03-04 Productos de papel en rollo grabados profundamente con espaciamiento reducido en los bordes en la direccion de maquina.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/713,930 2007-03-05
US11/713,930 US20080216975A1 (en) 2007-03-05 2007-03-05 Deeply embossed roll paper products having reduced gapping on the machine direction edges

Publications (2)

Publication Number Publication Date
WO2008107845A2 true WO2008107845A2 (fr) 2008-09-12
WO2008107845A3 WO2008107845A3 (fr) 2008-11-06

Family

ID=39684129

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/050787 WO2008107845A2 (fr) 2007-03-05 2008-03-04 Produits papetiers en rouleau profondément gaufrés à espacement réduit sur les bords sens machine

Country Status (4)

Country Link
US (1) US20080216975A1 (fr)
CA (1) CA2679861A1 (fr)
MX (1) MX2009009297A (fr)
WO (1) WO2008107845A2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011159792A3 (fr) * 2010-06-18 2012-02-02 The Procter & Gamble Company Structures fibreuses en rouleau de densité élevée
WO2014210232A1 (fr) 2013-06-27 2014-12-31 The Procter & Gamble Company Produits de feuille portant des motifs variant parmi des feuilles successives
WO2014210233A1 (fr) 2013-06-27 2014-12-31 The Procter & Gamble Company Système pour produire des produits en feuilles portant des dessins qui varient parmi les feuilles successives
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
US10161084B2 (en) 2012-11-30 2018-12-25 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US11447916B2 (en) 2018-10-26 2022-09-20 The Procter & Gamble Company Paper towel rolls
US11633076B2 (en) 2018-10-26 2023-04-25 The Procter & Gamble Company Sanitary tissue product rolls
US11700979B2 (en) 2018-10-26 2023-07-18 The Procter & Gamble Company Sanitary tissue product rolls

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170284025A1 (en) * 2016-04-04 2017-10-05 The Procter & Gamble Company Fibrous Structures Different Fibrous Elements
US20170282524A1 (en) * 2016-04-04 2017-10-05 The Procter & Gamble Company Layered Fibrous Structures with Different Common Intensive Properties
US10336520B2 (en) * 2016-04-15 2019-07-02 The Imagine Group, Llc Single-ply, non-corrugated materials suitable for decorative wrapping
US11065776B2 (en) 2016-12-09 2021-07-20 The Procter & Gamble Company Finished products formed from cutting convolutely wound logs of web materials
US11584033B2 (en) 2016-12-09 2023-02-21 The Procter & Gamble Company Device for transversally cutting convolutely wound logs of web materials
WO2019005036A1 (fr) * 2017-06-28 2019-01-03 Kimberly-Clark Worldwide, Inc. Rouleaux de tissu ouaté ayant des propriétés variables dans le sens travers
USD905972S1 (en) * 2018-12-12 2020-12-29 The Procter & Gamble Company Rolled paper product
USD905437S1 (en) * 2018-12-12 2020-12-22 The Procter & Gamble Company Rolled paper product
USD912410S1 (en) 2018-12-12 2021-03-09 The Procter & Gamble Company Paper sheet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9415388U1 (de) * 1994-09-21 1994-12-22 PWA Ortmann AG, Ortmann Mehrlagiges bahnförmiges Hygienepapier
US20050132904A1 (en) * 2003-11-05 2005-06-23 Georgia-Pacific France Process for packaging products in roll and associated cylinder
WO2006092817A1 (fr) * 2005-03-01 2006-09-08 Fabio Perini S.P.A. Rouleau de gaufrage, dispositif de gaufrage comprenant ledit rouleau et article en papier produit avec ledit dispositif
US20060286885A1 (en) * 2005-06-21 2006-12-21 Fort James Corporation Tissue product with mixed inclination embosses

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1846942A (en) * 1929-09-18 1932-02-23 American Mach & Foundry Cut-off for high-speed cigarette machines
US3905260A (en) * 1974-09-06 1975-09-16 Paper Converting Machine Co Log sawing system
USRE30598E (en) * 1979-02-14 1981-05-05 Paper Converting Machine Company Method for transverse cutting
US4422588A (en) * 1981-09-28 1983-12-27 The Black Clawson Company Slitter-rewinder system
US4748881A (en) * 1986-04-02 1988-06-07 B. J. Mackie & Co. (Aust.) Pty. Ltd. Roll slicing machine
IT1233279B (it) * 1989-04-05 1992-03-26 Perini Finanziaria Spa Troncatrice per il taglio di bastoni di materiale cartaceo e simili
US6648266B1 (en) * 1993-03-24 2003-11-18 Fabio Perini S.P.A. Rewinding machine and method for the formation of logs of web material with means for severing the web material
IT1262046B (it) * 1993-03-24 1996-06-18 Guglielmo Biagiotti Macchina ribobinatrice per la formazione di rotoli di materiale nastriforme con mezzi per l'interruzione del materiale nastriforme e relativo metodo di avvolgimento.
US5557997A (en) * 1994-04-06 1996-09-24 Paper Converting Machine Company Apparatus for transverse cutting
ES2248914T3 (es) * 1997-08-29 2006-03-16 Corixa Corporation Agentes bioactivos encapsulados de liberacion rapida que permiten inducir o potenciar una respuesta inmunitaria y metodos para utilizar los mismos.
JP3581644B2 (ja) * 2000-09-05 2004-10-27 キヤノン株式会社 画像読取装置及び該装置の制御方法並びに記憶媒体

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9415388U1 (de) * 1994-09-21 1994-12-22 PWA Ortmann AG, Ortmann Mehrlagiges bahnförmiges Hygienepapier
US20050132904A1 (en) * 2003-11-05 2005-06-23 Georgia-Pacific France Process for packaging products in roll and associated cylinder
WO2006092817A1 (fr) * 2005-03-01 2006-09-08 Fabio Perini S.P.A. Rouleau de gaufrage, dispositif de gaufrage comprenant ledit rouleau et article en papier produit avec ledit dispositif
US20060286885A1 (en) * 2005-06-21 2006-12-21 Fort James Corporation Tissue product with mixed inclination embosses

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011159792A3 (fr) * 2010-06-18 2012-02-02 The Procter & Gamble Company Structures fibreuses en rouleau de densité élevée
US11619008B2 (en) 2012-11-30 2023-04-04 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US10584446B2 (en) 2012-11-30 2020-03-10 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US12049730B2 (en) 2012-11-30 2024-07-30 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US10161084B2 (en) 2012-11-30 2018-12-25 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US10947674B2 (en) 2012-11-30 2021-03-16 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US10280566B2 (en) 2012-11-30 2019-05-07 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
US10947672B2 (en) 2012-11-30 2021-03-16 Kimberly-Clark Worldwide, Inc. Smooth and bulky tissue
WO2014210233A1 (fr) 2013-06-27 2014-12-31 The Procter & Gamble Company Système pour produire des produits en feuilles portant des dessins qui varient parmi les feuilles successives
WO2014210232A1 (fr) 2013-06-27 2014-12-31 The Procter & Gamble Company Produits de feuille portant des motifs variant parmi des feuilles successives
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
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
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
US11447916B2 (en) 2018-10-26 2022-09-20 The Procter & Gamble Company Paper towel rolls
US11633076B2 (en) 2018-10-26 2023-04-25 The Procter & Gamble Company Sanitary tissue product rolls
US11700979B2 (en) 2018-10-26 2023-07-18 The Procter & Gamble Company Sanitary tissue product rolls
US11952724B2 (en) 2018-10-26 2024-04-09 The Procter & Gamble Company Paper towel rolls

Also Published As

Publication number Publication date
MX2009009297A (es) 2009-09-10
US20080216975A1 (en) 2008-09-11
WO2008107845A3 (fr) 2008-11-06
CA2679861A1 (fr) 2008-09-12

Similar Documents

Publication Publication Date Title
US20080216975A1 (en) Deeply embossed roll paper products having reduced gapping on the machine direction edges
US7678229B2 (en) Process for high engagement embossing on substrate having non-uniform stretch characteristics
US7887676B2 (en) Embossing process including discrete and linear embossing elements
US7910196B2 (en) Embossed multi-ply fibrous structure product
US7524404B2 (en) Embossing process including discrete and linear embossing elements
US7785696B2 (en) Embossed product including discrete and linear embossments
US8088471B2 (en) Paper product with enhanced emboss and background pattern contrast
CA2653397C (fr) Produit a structure fibreuse, multi-plis et a reliefs
US20070062658A1 (en) Absorbent paper product having high definition embossments
US20090117331A1 (en) Textured Multi-Ply Sanitary Paper Product Having Optimized Emboss Patterns
CA2611326C (fr) Produit gaufre comportant des motifs de gaufrage discrets et lineaires et appareil servant a sa fabrication

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08719557

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: MX/A/2009/009297

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 2679861

Country of ref document: CA

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08719557

Country of ref document: EP

Kind code of ref document: A2