WO2017184322A1 - System and method for producing a multi-layered board having a medium with improved structure - Google Patents

System and method for producing a multi-layered board having a medium with improved structure Download PDF

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Publication number
WO2017184322A1
WO2017184322A1 PCT/US2017/025531 US2017025531W WO2017184322A1 WO 2017184322 A1 WO2017184322 A1 WO 2017184322A1 US 2017025531 W US2017025531 W US 2017025531W WO 2017184322 A1 WO2017184322 A1 WO 2017184322A1
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WO
WIPO (PCT)
Prior art keywords
paper
board
apex
facing
flutes
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.)
Ceased
Application number
PCT/US2017/025531
Other languages
English (en)
French (fr)
Inventor
Giles Greenfield
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Scorrboard LLC
Original Assignee
Scorrboard LLC
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
Priority to KR1020187033314A priority Critical patent/KR20190018417A/ko
Priority to JP2018555194A priority patent/JP6675654B2/ja
Priority to NZ74840617A priority patent/NZ748406A/en
Priority to EP17786318.0A priority patent/EP3445577A4/en
Priority to CA3021883A priority patent/CA3021883C/en
Priority to AU2017252188A priority patent/AU2017252188B2/en
Priority to MX2018012756A priority patent/MX382514B/es
Priority to CN201780038055.3A priority patent/CN109311258B/zh
Application filed by Scorrboard LLC filed Critical Scorrboard LLC
Priority to BR112018071521-2A priority patent/BR112018071521A2/pt
Publication of WO2017184322A1 publication Critical patent/WO2017184322A1/en
Anticipated expiration legal-status Critical
Priority to CONC2018/0012330A priority patent/CO2018012330A2/es
Priority to PH12018502431A priority patent/PH12018502431A1/en
Priority to ZA2018/07783A priority patent/ZA201807783B/en
Ceased legal-status Critical Current

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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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2818—Glue application specially adapted therefor
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/22—Making webs in which the channel of each corrugation is longitudinal with the web feed
    • B31F1/225—Making webs in which the channel of each corrugation is longitudinal with the web feed combined with uniting the corrugated web to flat webs; Making corrugated-web structures
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2813—Making corrugated cardboard of composite structure, e.g. comprising two or more corrugated layers
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/289—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard from discrete sheets
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2895—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard from corrugated webs having corrugations of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/08—Corrugated paper or cardboard
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2804—Methods
    • 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
    • B31F1/36—Moistening and heating webs to facilitate mechanical deformation and drying deformed webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • 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.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • 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.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24702—Parallel corrugations with locally deformed crests or intersecting series of corrugations
    • 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.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components

Definitions

  • Modern paper-making techniques use paper machines at paper mills to produce rolls of paper that, in turn, can be used by board makers to produce board products (i.e., corrugated board). As a result, rolls of paper may be produced from machines that operate continuously. Modern paper machines typically produce paper from a number of substances including wood pulp that comprise wood fibers (although other fibers may also be used). These fibers tend to be elongated and suitable to be aligned next to one another. The fiber starts as a slurry that can be fed onto a moving screen from a head box of the paper machine. In modern paper machines, the fibers tend to align with each other and align with a direction in which the screen is moving. This alignment direction of underlying fibers is called the major direction of the paper and is in line with the machine direction. Thus, the major direction is often simply called the machine direction (MD) and the paper that is produced has an associated MD value.
  • MD machine direction
  • portions or layers of the board product may be corrugated.
  • Conventional corrugating machines will corrugate the underlying paper product in the cross direction (CD) of the paper thereby failing to take advantage of the natural strength bias of the paper in the machine direction. Further, the greater natural strength qualities of paper in the machine direction are left unharnessed by cross corrugation techniques in board making solutions.
  • conventional corrugated medium includes flutes that take on a sinusoidal shape because of the shape of the protrusions in a conventional pair of corrugating rolls. As a result, companies that produce conventional board products remain entrenched in old production processes that limit the strength of the board product.
  • FIG. 1 is an isometric cutaway view of an embossed medium that may be part of one or more board products according to one or more embodiments of the subject matter disclosed herein.
  • FIG. 2 is an isometric cutaway view of an embossed medium having an adhesive applied to tips of medium support structure that may be part of one or more board products according to one or more embodiments of the subject matter disclosed herein.
  • FIGs. 3A-C are profile views of various flute profiles of medium having improved structure according to embodiments of the subject matter disclosed herein.
  • FIG. 4 is an isometric cutaway views of a board product having the embossed medium of FIG. 1 according to an embodiment of the subject matter disclosed herein.
  • FIG. 5 is a diagram of aspects of a machine configured to produce the board product of FIG. 4 according to an embodiment of the subject matter disclosed herein.
  • the subject matter disclosed herein may be directed to a system and method for producing a board product made from paper products that have embossed medium (sometimes called embossed fluting) that features an improved structural profile.
  • the improved structural profile may include a triangular flute pattern wherein each flute may exhibit a first linear leg support and a second linear leg support that each support a center apex structure.
  • the apex may have a substantially flat portion that is configured to engage a facing.
  • the board product may further include one or more facings (sometimes called liners or walls) that are adhesively coupled to the embossed medium.
  • the apex of each "triangle” may also have a groove or channel for receiving an adhesive in a continuous and uniform manner.
  • an embossed medium includes a flute profile with linear leg structures flanked by substantially flat apexes
  • the resulting board strength and overall structure is improved with respect to conventionally produced board having corrugated medium.
  • the embossed medium may be produced using a linear embossing process that takes advantage of the natural strength of the machine direction of the paper product. Additional permutations of the underlying concept of having a cross-corrugated medium and a linearly embossed medium in the same board product are possible, including disposing a facing between the corrugated medium and the embossed medium and having facings on one or both outer walls of the board product.
  • conventional board products include a conventionally produced corrugated medium (sometimes called a corrugated fluting), e.g., a cross-corrugated medium.
  • a cross- corrugated medium has flutes formed perpendicular to most underlying fibers of the paper product. This results in flutes that are not aligned with the majority of underlying fibers and, therefore, do not take advantage of the natural strength of the MD value of the paper (when compared to the CD value).
  • Such a failure to harness the MD value of the paper leads to loss of opportunity in the manufacturing of board products when specific board strength is to be realized. That is, it will necessarily take more paper (heavier paper, larger flutes, and the like) to realize the required board strength.
  • a linearly-embossed medium is different from a cross-corrugated medium in that the induced flutes are aligned with the MD value of the paper product. This results in flutes that are aligned with the majority of underlying fibers and, therefore, take advantage of the natural strength of the MD value of the paper (when compared to the CD value). Harnessing the MD value of the paper leads to efficiencies in the manufacturing of board products when specific board strength is to be realized. That is, it will necessarily take less paper (lighter paper, smaller flutes, and the like) to realize the required board strength. Aspects of making, producing, and using linearly embossed mediums are discussed in greater detail in U.S. Patent Application No.
  • FIG. 1 is an isometric cutaway view of an embossed medium 130 that may be part of one or more board products according to one or more embodiments of the subject matter disclosed herein.
  • This diagram shows an isometric view of a portion of an embossed medium 130 that may be formed from an embossing process. That is, flutes 131 are formed from passing the initial paper product through embossing rolls to form flutes using a linear-embossing technique such that the flutes 131 are formed congruent with a majority of underlying fibers 125 of the paper. The flutes 131 are also formed congruent with the machine direction 122.
  • a linearly-embossed medium 130 harnesses the natural strength of the paper in the machine direction 122 as the flutes 131 are formed in the machine direction 122 of the paper (e.g., congruent with a majority the underlying fibers 125). Therefore, a linearly-embossed medium 130 does harness the natural strength of the paper in the machine direction 122.
  • Such an embossed medium 130 may be a component/layer of a board product as discussed below with respect to FIG. 4.
  • the flutes 131 may form a triangular pattern when viewed from a cutaway perspective.
  • This flute pattern having a triangular repeating shape is referred to as a flute profile hereinafter.
  • the flute profile provides an improvement in structural integrity of the embossed medium when compared to a flute profile the exhibits a curvilinear or sinusoidal flute profile.
  • Such a curvilinear or sinusoidal flute profile is prevalent in conventional cross- corrugated mediums. Therefore, the triangular flute profile as shown in FIG. 1 is also superior to corrugated mediums with respect to medium strength and structural integrity.
  • this flute profile and other similar flute profile exhibit superior strength and structural integrity are presented below with respect to FIGs. 2-3.
  • FIG. 2 is an isometric cutaway view of an embossed medium 130 having an adhesive 201 applied to the apex structure of the medium support structure that may be part of one or more board products according to one or more embodiments of the subject matter disclosed herein.
  • a closer look at the embossed medium shows a series of flutes that form an isosceles triangle flute profile.
  • the flute profile may comprise a series of support structures that each include three portions.
  • the three portions are a first leg support structure 211, a second leg support structure 212, and an apex structure 210.
  • the apex structure 210 is disposed between the first and second leg support structures 211 and 212.
  • each support structure may have an apex facing up (although up is an arbitrary direction simply shown by virtue of the illustration).
  • a second series of support structures may also each include three portions, but from the downward facing perspective.
  • the leg support structure 212 also forms a leg support structure for a triangle facing downward.
  • the three portions are a first leg support structure 214, a second leg support structure 212, and an apex structure 213 disposed between the first and second leg support structures 214 and 212.
  • the second leg structure 212 is the same second leg support structure with respect to the upward facing apex 210 and the downward facing apex 213.
  • the flute profile can then be thought of as series of alternating upward 210 and downward 213 facing apexes with alternating linear leg support structures (e.g., 211, 212, and 214) disposed there between.
  • Each apex 210 and 213 may be formed to be substantially flat so as to provide a uniform surface to receive the adhesive 201 from a machine for locating an apex and applying a continuous line of adhesive to each apex. Then, the embossed medium 130 may be affixed to a facing 140 at the apexes that have adhesive 201 at the ready. In other embodiments, each apex 210 and 213 may have a groove for facilitating the receiving of the adhesive. With a groove, the adhesive will tend to remain in place while the embossed medium 130 is moving through a board-making machine. Such a grooved apex embodiment is discussed below with respect to FIG. 3C.
  • FIGs. 1 -2 have an embossed medium 130 that exhibits an isosceles triangular flute profile having superior strength and improved support structure.
  • One reason that this embodiment provides superior strength is that the leg support structures 211, 212, and 214 are linear. That is, the leg support structures are not curved and therefore tend to remain fixed and rigid when various forces are applied from various directions.
  • the "legs" are more like a continuous curve of a sinusoidal pattern.
  • the "apex" of each flute may be the top side of the sinusoidal curve that exhibits a curved, smooth transition to any portion oif the medium that eventually forms a quasi-flat apex.
  • the apex may translate forward and backward in an undesired manner.
  • linear leg support structures 211, 212, and 214 a more defined structure is provided that resists unpredictable movement and failure points.
  • the shortest distance between two points is a straight line.
  • the shortest distance between each top-side facing apex and each bottom side facing apex is a linear leg support structure.
  • having a triangular flute profile necessarily uses less overall paper to produce the embossed medium (as compared to a sinusoidal corrugated medium).
  • Other embodiments may include different shapes for a flute profile including saw-tooth, trapezoidal, or any manner of a geometric shape that exhibits linear leg support structures flanked by alternating topside and bottom-side apexes. Three such embodiments are shown in FIGs. 3A-C and discussed next.
  • FIGs. 3A-C are profile views of various flute profiles of medium having improved structure according to embodiments of the subject matter disclosed herein.
  • a first isosceles triangle flute profile 300 is shown.
  • This flute profile 300 is also shown in FIGs. 1 and 2, but this view provides a cross-section view of the actual flute profile.
  • each flute includes a first linear leg support structure 301 and a second linear leg support structure 302 that are each coupled to one apex 303 disposed there between.
  • the apex 303 is disposed substantially flat and in a plane that is parallel to an eventual facing that may be coupled (via adhesive, or other means - not shown).
  • the width of the apex 303 in this embodiment is approximately one tenth of the length of each linear leg support structure 301 and 302.
  • this embodiment may be referred to as a narrow apex flute profile 300.
  • the angle of each leg 301 and 302 with respect to each apex 303 may be approximately 60 degrees. However, any number of leg angles may be realized.
  • the first linear leg structure 301 and the second linear leg structure 302 may be affixed with respect to the apex 303 plane at an angle between approximately 30 degrees and 60 degrees.
  • FIG. 3B a second isosceles triangle flute profile 320 is shown.
  • This flute profile 320 view provides a cross-section view of the actual flute profile exhibiting a first linear leg support structure 321 and a second linear leg support structure 322 that are each coupled to one apex 323 disposed there between. Further, the apex 323 is disposed substantially flat and in a plane that is parallel to an eventual facing that may be coupled. Different from FIG. 3A, the width of the apex 323 in this embodiment is approximately one fifth of the length of each linear leg support structure 321 and 322. Thus, this embodiment may be referred to as a wide apex flute profile 320.
  • a third isosceles triangle flute profile 340 is shown.
  • This flute profile 340 view provides a cross-section view a flute profile exhibiting a first linear leg support structure 341 and a second linear leg support structure 342 that are each coupled to one apex 343 disposed there between.
  • the apex 343 is disposed substantially flat and in a plane that is parallel to an eventual facing that may be coupled.
  • the apex 343 includes a groove or channel for receiving an adhesive prior to being coupled to a facing (not shown).
  • the width of the apex 343 is approximately one fifth of the length of each linear leg support structure 321 and 342.
  • FIG. 4 is an isometric cutaway view of a board product 400 having an embossed medium 130 with improved flute structure according to an embodiment of the subject matter disclosed herein.
  • the board product includes four layers: a first facing 110, a corrugated medium 120, an embossed medium 130, and a second facing 140.
  • the first facing 110 may form a top-side outer wall (although the top/bottom direction reference to alignment of the board product 100 is arbitrary) that is coupled to one side of the corrugated medium 120.
  • the coupling may be through an adhesive applied to the apex of each flute on the top-side of the corrugated medium 120 such that the facing ⁇ is glued to the corrugated medium 120 where adhesive is applied.
  • glue may be applied to the entirety of the facing 110 prior to being coupled to the corrugated medium 120.
  • a second facing 140 may form a bottom-side outer wall (again, the top/bottom direction reference is arbitrary) that is coupled to one side of the embossed medium 130.
  • the coupling may be through an adhesive applied to the apex of each flute on the bottom-side of the embossed medium 130 such that the facing 140 is glued to the embossed medium 140 where adhesive is applied.
  • glue may be applied to the entirety of the facing 140 prior to being coupled to the embossed medium 130.
  • the corrugated medium 120 and the embossed medium 130 may also be glued to each other using adhesive. Because the flutes of the corrugated medium 120 are aligned in the cross direction and the flutes of the embossed medium 130 are aligned in the machine direction, the contact points between these two mediums will be at the crossings of the apexes of the respective flutes. In this manner, the corrugated medium 120 and the embossed medium 130 are affixed with respect to one another because of the adhesive holding one medium directly to the other.
  • the resultant board product 400 is stronger than conventional board product because the linearly embossed medium 130 includes a flute profile that exhibits superior strength because of the linear leg structures of each flute. Further, adhesive may be continuously and uniformly applied to each apex in a predictable and repeatable manner with greater precision as portions of the adhesive will not spill over to the legs as may be the case with sinusoidal apexes having no flat receiving area. As shown in FIG. 4, the board product 400 includes a corrugated medium 120.
  • the corrugated medium 120 may not be present such that the top-side facing 110 is glued to each top-side apex of the embossed medium and the bottom-side facing 140 is glued to each bottom side apex of the embossed medium 130. Additional aspects of the board product 400 of FIG. 4 are discussed next with respect to the machine of FIG. 5.
  • FIG. 5 is a diagram of aspects of a machine 500 configured to produce the board product of FIG. 4 according to an embodiment of the subject matter disclosed herein.
  • the machine includes four feed rolls 510, 520, 530, and 540 of paper that are used to produce a board product. These feed rolls include a first facing feed roll 510, a corrugated medium feed roll 520, an embossed medium feed roll 530, and a second facing feed roll 540. Note that the paper that is wound on the corrugated medium feed roll 520 is prior to corrugating and the paper that is wound on the embossed medium feed roll 530 is prior to embossing. The weights and composition of the paper for each respective feed roll may be different and designed specifically for the respective purpose.
  • the paper from each roll may be unwound from each respective roll and fed toward a combiner 550 that is configured to combine the various layers of paper together to form a resultant board product.
  • a stage Prior to entering the combiner 550, at least some of the paper from the feed rolls may be passed through a stage for forming the paper into a medium.
  • a medium may refer to a paper product that has been formed into paper having flutes.
  • the corrugated medium feed roll 520 may feed paper into first and second corrugating rolls 521a and 521b that are aligned with respect to each other. As the paper exits the corrugating stage (e.g., corrugating rolls 521a and 521b), it becomes the corrugated medium 120.
  • the corrugated medium 120 is then fed into the combiner 550 to be combined with other materials.
  • the embossed medium feed roll 530 may feed paper into first and second embossing rolls 531a and 531b that are aligned with respect to each other. As the paper exits the embossing stage (e.g., embossing rolls 531a and 531b), it becomes the embossed medium 130 as discussed above with respect to FIG. 1. The embossed medium 130 is then fed into the combiner 550 to be combined with other materials.
  • the embossed medium paper feed 530 may be first fed into a conditioner 560 that may condition the paper prior to embossing.
  • conditioning may include wetting the paper, heating the paper, cooling the paper, applying chemicals to the paper and various other forms of changing the underlying condition of the paper to be better prepared for embossing.
  • the conditioning stage may remove or modify inherent stiffness in the paper and reduce the degree of possible fiber damage that will occur in the stretching process during embossing.
  • the conditioner may immerse (entirely or partially) the paper web in process in a liquid (e.g., water, recoverable solvent, and the like). The liquid may be heated or not so as to achieve the desired paper condition of compliance/plasticity.
  • the embossed medium 130 may be passed to an applicator 570 for applying adhesive to the newly formed apexes.
  • the applicator may include a device for identifying the locations of each apex and then aligning a series of adhesive dispensers with the identified apexes.
  • adhesive may be transferred to the flute tips with a glue roll or rolls where the paper contacts a glue film and adheres to the flute tips. In this manner, adhesive may be applied with precision in a continuous and uniform manner.
  • the resultant board product 400 features at least one cross-corrugated medium 120 and at least one linearly-embossed medium 130 wherein the linearly embossed medium includes a flute profile with improved structure.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
PCT/US2017/025531 2016-04-20 2017-03-31 System and method for producing a multi-layered board having a medium with improved structure Ceased WO2017184322A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
MX2018012756A MX382514B (es) 2016-04-20 2017-03-31 Sistema y metodo para fabricar un carton de multiples capas que tiene un medio con estructura mejorada.
NZ74840617A NZ748406A (en) 2016-04-20 2017-03-31 System and method for producing a multi-layered board having a medium with improved structure
EP17786318.0A EP3445577A4 (en) 2016-04-20 2017-03-31 SYSTEM AND METHOD FOR PRODUCING A MULTI-LAYERED PANEL WITH A MEDIUM WITH IMPROVED STRUCTURE
CA3021883A CA3021883C (en) 2016-04-20 2017-03-31 System and method for producing a multi-layered board having a medium with improved structure
AU2017252188A AU2017252188B2 (en) 2016-04-20 2017-03-31 System and method for producing a multi-layered board having a medium with improved structure
CN201780038055.3A CN109311258B (zh) 2016-04-20 2017-03-31 用于生成具有带改进结构的介质的多层纸板的系统及方法
BR112018071521-2A BR112018071521A2 (pt) 2016-04-20 2017-03-31 sistema e método para produzir um papelão de múltiplas camadas que tem um meio com estrutura aprimorada
KR1020187033314A KR20190018417A (ko) 2016-04-20 2017-03-31 개선된 구조의 매체를 갖는 다층 보드를 제조하기 위한 시스템 및 방법
JP2018555194A JP6675654B2 (ja) 2016-04-20 2017-03-31 改善された構造の中芯を有する多層ボードを製造するためのシステムおよび方法
CONC2018/0012330A CO2018012330A2 (es) 2016-04-20 2018-11-15 Sistema y método para fabricar un cartón de múltiples capas que tiene un medio con estructura mejorada
PH12018502431A PH12018502431A1 (en) 2016-04-20 2018-11-19 System and method for producing a multi-layered board having a medium with improved structure
ZA2018/07783A ZA201807783B (en) 2016-04-20 2018-11-19 System and method for producing a multi-layered board having a medium with improved structure

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US11420417B2 (en) 2013-03-15 2022-08-23 Scorrboard Llc Methods and apparatus for producing scored mediums, and articles and compositions resulting therefrom
WO2014186043A1 (en) 2013-03-15 2014-11-20 Corrugated Synergies International, Llc Establishing a registered score, slit or slot in corrugated board, and articles produced therefrom
US11027513B2 (en) 2016-04-20 2021-06-08 Scorrboard Llc System and method for producing an articulating board product having a facing with score lines in register to fluting
US11027515B2 (en) 2016-04-20 2021-06-08 Scorrboard Llc System and method for producing multi-layered board having at least three mediums with at least two mediums being different
US10328654B2 (en) 2016-04-20 2019-06-25 Scorrboard, Llc System and method for producing a multi-layered board having a medium with improved structure
US10800133B2 (en) 2016-04-20 2020-10-13 Scorrboard, Llc System and method for producing a facing for a board product with strategically placed scores

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CN109311258B (zh) 2020-11-06
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US20170305098A1 (en) 2017-10-26
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US20190255799A1 (en) 2019-08-22
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