WO2004041524A2 - Noyau dimensionnellement stable presentant une resistance elevee - Google Patents

Noyau dimensionnellement stable presentant une resistance elevee Download PDF

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Publication number
WO2004041524A2
WO2004041524A2 PCT/US2003/034318 US0334318W WO2004041524A2 WO 2004041524 A2 WO2004041524 A2 WO 2004041524A2 US 0334318 W US0334318 W US 0334318W WO 2004041524 A2 WO2004041524 A2 WO 2004041524A2
Authority
WO
WIPO (PCT)
Prior art keywords
paperboard
furnish
lbs
core
per ton
Prior art date
Application number
PCT/US2003/034318
Other languages
English (en)
Other versions
WO2004041524A3 (fr
Inventor
Gopal Iyengar
Jeffrey G. Dicks
Mark D. Ellis
Gary G. Glodoski
Original Assignee
Stora Enso North America Corporation
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 Stora Enso North America Corporation filed Critical Stora Enso North America Corporation
Priority to AU2003288955A priority Critical patent/AU2003288955A1/en
Priority to US10/533,347 priority patent/US20060021725A1/en
Publication of WO2004041524A2 publication Critical patent/WO2004041524A2/fr
Publication of WO2004041524A3 publication Critical patent/WO2004041524A3/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/16—Sizing or water-repelling agents
    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C11/00—Machinery for winding combined with other machinery
    • B31C11/04—Machinery for winding combined with other machinery for applying impregnating by coating-substances during the winding
    • 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
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/28—Starch
    • D21H17/29—Starch cationic
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/66—Salts, e.g. alums
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/18—Reinforcing agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape
    • 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
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1303—Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
    • 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
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles

Definitions

  • This invention relates to paperboard, paperboard cores and tubes, and to a method for making cores and tubes.
  • Cores are conventionally manufactured from laminated, spirally wound paperboard. It is important that cores have sufficient crush strength. Dimensional stability of cores is also important in roll handing operations.
  • Moisture content in paper varies considerably from grade to grade depending on the manufacturing process.
  • paperboard cores are made at different moisture levels, depending on the absorption characteristics of the paperboard from which it is made and the adhesive used to glue the board layers to form a laminated core.
  • a difference in moisture content between the paper and core causes moisture to migrate. Moisture migration from the core to the paper and vice versa can cause corrugations and wrinkling in the paper, and in some cases core bursts, resulting in paper losses.
  • the core of the invention is manufactured from spirally wound paperboard having improved water resistance.
  • the paperboard is made from a standard paperboard furnish.
  • a preferred furnish comprises a mixture of 25- 70% doubleliner kraft ("DLK”), and 25-70% recycled corrugated containers (“OCC”), and 30-50% recycled cores and/or other cores waste (“corebale”).
  • the furnish should have a freeness of 150-275 CSF.
  • the furnish is modified by adding 5-60 lbs/ton alum, 3-40 lbs/ton of liquid size, and 16-50 lbs/ton modified cationic starch.
  • Other additives may optionally include 0.2 - 1. lbs/ton microparticle silica, and/or 2-8 lbs/ton of a dry strength agent, but are not required.
  • a more preferred formulation has a paperboard furnish, 4-40 lbs of alum per ton of furnish (more ideally 4-12 lbs/ton of alum); 3-12 lbs of liquid size per ton of furnish, and 30-40 lbs of cationic starch per ton of furnish.
  • alum improves drainage and helps reduce the swelling of wood fibers. Wood fibers swell when absorbing water. Significant drying energy or time is required to remove moisture absorbed by the fiber. Desirably the resulting paperboard has water absorption less than 400 cgs.
  • a suitable alum product is aluminum sulfate solution available from General Alum & Chemical Corporation, Holland, Ohio.
  • a preferred liquid size is Ultra-pHase® cationic dispersed size manufactured by Hercules Incorporated, Wilmington, Delaware.
  • the modified cationic starch improves strength, especially in combination with alum. Cationic starch also contributes to drainage, thereby allowing for a reduction in the quantity of alum used.
  • a preferred starch product is Penford Topcat 776 cationic additive, manufactured by Penford Products Co., Cedar Rapids, Iowa. Other suitable starch products are Avebee Amylofax 3300C and Amylofax-HS.
  • the microparticle silica is added to improve the drainage in the paperboard making process.
  • a preferred microparticle silica is Nalco 8692
  • Papermaking Aid an aqueous dispersion of an inorganic hydrous oxide microparticle, manufactured by Nalco Chemical Company, Naperville, Illinois. Other microparticle silica products may be used as well.
  • the dry strength agent improves strength and contributes somewhat to improvement in water resistance.
  • Suitable dry strength agent is Callaway 911 dry strength agent, manufactured by Vulcan Performance Chemicals, Birmingham, Alabama. However, most dry strength agents are expensive additives and for this reason are less preferred.
  • the forgoing optional additives are selected and added as required to produce the required properties of the core. For example, if a high strength is not required, one could use little or no starch or dry strength agents. Other additives could be used, for example a wet strength agent.
  • the modified furnish is manufactured into paperboard by known manufacturing techniques, such as fourdrinier or multiple cylinder papermachine, to produce a finished paperboard having a basis weight of 50- 142 lbs per 1000 sq/ft, a caliper of about 0.013 to .041 inches, a density of 0.7 to 1.0 g/cm and a moisture content of between about 3-6 percent.
  • the moisture content of the cores preferably should be as close as possible to the moisture content of the paper to be wound onto the cores.
  • the paperboard is then wound with conventional core machinery to form paperboard cores having between 3-32 plies.
  • one embodiment of the invention comprises high strength cores for paper rolls, which have 20-32 plies.
  • Another application of the invention is for cores for adhesive tape and other small tube applications, which have 3-7 plies.
  • cores made in accordance with this disclosure have a lower core crush variability due to humidity and improved dimensional stability.
  • the preferred adhesive used in winding the cores is polymer base, such as latex or polyvinyl alcohol; however, other adhesives like dextrins may be used.
  • Testing on the cores made in accordance with the foregoing exhibited increased crush strength, and increased water holdout.
  • the cores exhibited reduced moisture carry over, and low core length shrinkage.
  • Other benefits include reduced core warpage and less variability in core inner and outer diameter.
  • the furnish comprised: 950 lbs DLK, 1,000 lbs OCC and 1,400 lbs corebale.
  • Paperboard was manufactured from the furnish on a conventional board machine. The resulting paperboard had a caliper of about 0.02 inches and a basis weight of about 80 lbs/1,000 square feet.
  • the core was wound in conventional process, having a lead-in ply and 30 structural plies formed with the above furnish. The cores had an internal diameter of 3.025 inches and a wall thickness of 0.66 inches.
  • Paperboard and cores were tested for water absorption and strength.
  • the paperboard had a water absorption of less than about 950 - 1150 cgs based on the amount of water absorbed by a 6" x 6" paper board sample submerged in a water bath for 10 minutes (Tappi test method T491-om-99).
  • the paperboard had a ZDT bond strength of 100 "Z"directional internal bond strength of board tested on a ZDT tester.
  • Core crush strength was 800-850 lbs on a 4" length of core, and Dynamic load strength of 26-29 lbs/4" section.
  • the moisture content of the core was 9-11%.
  • Example PI The same paperboard and cores as in Example GP1 were manufactured, except that the following constituents were added to the furnish: Callaway 911 dry strength agent @ 6 lbs/ton dry weight Ultra-Phase liquid size @ 31 lbs/ton dry weight
  • Alum was varied between 20 and 60 lbs/ton dry weight Paperboard and cores were tested for water absorption and strength.
  • the paperboard had a water absorption of less than 400 cgs based on the amount of water absorbed by a 6" x 6" paper board sample submerged in a water bath for 10 minutes.
  • the paperboard had a ZDT bond strength 105-112 - "Z"directional internal bond strength of board tested on a ZDT tester.
  • Core crush strength was 1135 lbs on a 4" length of core, and Dynamic load strength of 35.2 lbs/4" section.
  • the moisture content of the core was 7.86%.
  • Example P2 The same paperboard and cores as in Example GP1 were manufactured, except that the following constituents were added to the furnish:
  • Paperboard and cores were tested for water absorption and strength.
  • the paperboard had a water absorption of less than 300 cgs based on the amount of water absorbed by a 6" x 6" paper board sample submerged in a water bath for 10 minutes.
  • the paperboard had a ZDT bond strength 112-124 - "Z"directional internal bond strength of board tested on a ZDT tester.
  • Core crush strength was 1238 lbs on a 4" length of core, and Dynamic load strength of 36.3 lbs/4" section.
  • the moisture content of the core was 8.43%.
  • Example P5 The same paperboard and cores as in Example GP1 were manufactured, except that the following constituents were added to the furnish:
  • Example P5A was prepared in the same manner as Example P5, with the following modifications to the alum and size constituents: Ultra-pHase size @ 12 lbs/ton dry weight Alum @ 4-5 lbs/ton dry weight.
  • FIGs. 1-10 are graphs that summarize comparative testing on the cores of examples GPl, PI, P2 and P5.
  • Figs. 1-7 show the effects of ambient air drying on standard core samples made in accordance with this disclosure, namely PI, P2 and P5 as compared to a standard core sample GPl. Uniformly, the samples PI, P2 and P5 exhibit significantly less variability than the standard GPl core.
  • Conventionally cores must be dried either by ambient air drying or by oven drying to reach a target moisture content and other criteria specified by the mill, i.e., the cores must be cured prior to use. Ambient drying takes time and storage space. Oven drying requires a capital expenditure plus energy. Cores made in accordance with this disclosure reduce or eliminate these costs.
  • Fig. 1 shows that core moisture varies considerably with the GPl standard core. Core samples PI, P2 and P5 showed considerably less moisture variability. Core sample P5 showed nearly nil core moisture variability. Fig. 2 shows the effect of ambient drying on core crush strength.
  • the GPl standard core is typical of conventional cores. Crush strength varies considerable as the core cures. Also, crush strength increases with time from its initial green strength. In contrast the core samples PI, P2 and P5 performed considerably better exhibiting less variability and less cure time. Also, the P5 core exhibited superior crush strength.
  • Fig. 3 illustrates the effect of ambient drying time on dynamic load strength. The dynamic load strength test simulates the dynamic loads that cores experience when being wound with paper or other material. As with core crush strength, core sample GPl standard exhibited considerable variability, while core samples PI, P2 and P5 exhibited comparatively less variability.
  • Fig. 4 shows the effect of ambient drying on length shrinkage. Core samples PI, P2 and P5 show less variability as compared to GPl standard.
  • Fig. 5 shows the effect of ambient drying on core warp.
  • Core wa ⁇ is measured as the differential height between high and low spots on the core, when the core is held in a level, horizontal position.
  • the Fig. 5 graph shows considerable variability in warp in the GPl standard core as it cures.
  • Fig. 6 illustrates the effect of ambient drying time on core outer diameter
  • Fig 7 shows the effect on core inner diameter.
  • the graphs show comparatively less variability in diameter in samples PI, P2 and P5, as contrasted with the GPl- standard.
  • Fig. 8 shows the effect of oven drying on core moisture.
  • Core samples PI, P2 and P5 had lower moisture contents than the GPl standard core.
  • Fig. 9 shows the effect of oven drying on core moisture on core crush strength and dynamic load strength. In both cases core sample P5 exhibited increased core crush strength.
  • Fig. 10 shows moisture migration from the core to the paper.
  • Paper of a uniform, low moisture content (1.5%) was wound onto the core samples, and held for a period of 7 days to 3 weeks time. The paper was then un-wound and the moisture content of the paper was measured at various locations measured radially from the core.
  • the graph shows that there is little difference between core samples on paper located radially more than 3 inches from the core.
  • the paper wound onto the GPl standard core picked up more moisture from the core (moisture migration), as compared to either the PI or P2 sample cores.
  • the paper wound on to the GPl standard core exhibited greater moisture migration to the paper as compared to the P2 core sample.
  • Example P5A has shown strength improvements in addition to reduced variability and improved moisture migration resistance.
  • Tables 1-3 compare properties of standard GPl core samples (Table 1) with core samples having the same furnish as GPl but with the additives of Example P5A (Table 2), and a conventional high strength core, designated GPl-X (Table 3).
  • the GPl-X core is spirally wound from high strength Pori paperboard, available from Coresno AB, Finland. Pori board is considerably more expensive that the conventional paperboard used to make the GPl standard.
  • the direct costs (material, setup and running) for GPl-X cores is approximately 26% greater than standard GPl cores.
  • the P5A core direct costs is only marginally greater (approximately 3.5%) than the standard GPl core.
  • Tables 1-3 show that the cores made with comparatively low cost furnish with the additives of Example P5A, produce a core that with essentially no ambient drying has a crush strength that is substantially higher than the standard GPl core and comparable to more expensive, high strength GP-1 cores. Dynamic load data for the P5A core is also significantly higher than the standard GP-1 core.
  • Tables 1-3 further show that the amount of ambient drying time necessary to reach a target moisture content is substantially lower in Example P5A cores. With essentially no drying time, the P5A core had a 9.7% moisture. To achieve the same moisture content required at least 4 days for the GPl standard core and 7 days for the GPl-X core. It is believed that the combination of alum and size improves weathe ⁇ roof characteristics of the paperboard & a combination of alum and modified cationic starch facilitates more effective drainage and therefore improved drying and efficiencies on the paperboard machine as well.
  • Tables 4-6 compare properties of oven dried standard GPl core samples (Table 4) with oven dried core samples having the same furnish as GPl but with the additives of Example P5A (Table 5), and an oven dried conventional high strength GPl-X core (Table 6).
  • Tables 4-6 show that in the oven dried cores, the P5A core exhibits substantially higher crush strength and dynamic load strength than the standard GPl core.
  • the oven P5A cores had strength comparable to the more expensive GPl-X cores.
  • the P5A cores had substantially lower moisture content after the same drying time, and a lower temperature, as compared to both the GPl standard and GP-X cores.

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  • Paper (AREA)

Abstract

L'invention concerne un carton présentant une résistance mécanique et une résistance à l'eau améliorées, et présentant une composition de fabrication de carton standard modifiée par l'ajout de 5 à 60 livres d'alun par tonne, 3 à 40 livres de colle liquide par tonne, et 16 à 50 livres d'amidon cationique modifié par tonne. Une formulation plus idéale présente une composition de fabrication de carton comportant de 4 à 40 livres d'alun par tonne de composition, 3 à 12 livres de colle liquide par tonne de composition, et 30 à 40 livres d'amidon cationique par tonne de composition. D'autres additifs, notamment un agent de résistance à la sécheresse et des microparticules de silice peuvent être ajoutés. Des noyaux de carton enroulés en spirale à partir du carton de l'invention présentent des temps de séchage plus courts, une meilleure résistance mécanique, une stabilité dimensionnelle améliorée et une migration d'humidité réduite.
PCT/US2003/034318 2002-10-31 2003-10-30 Noyau dimensionnellement stable presentant une resistance elevee WO2004041524A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003288955A AU2003288955A1 (en) 2002-10-31 2003-10-30 High strength dimensionally stable core
US10/533,347 US20060021725A1 (en) 2002-10-31 2003-10-30 High strength dimensionally stable core

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42257102P 2002-10-31 2002-10-31
US60/422,571 2002-10-31

Publications (2)

Publication Number Publication Date
WO2004041524A2 true WO2004041524A2 (fr) 2004-05-21
WO2004041524A3 WO2004041524A3 (fr) 2004-06-24

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AU (1) AU2003288955A1 (fr)
WO (1) WO2004041524A2 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2007070418A2 (fr) * 2005-12-14 2007-06-21 Sonoco Development, Inc. Carton dote de regions densifiees distinctes, son procede de fabrication et stratifie integrant celui-ci
US7842362B2 (en) 2006-02-17 2010-11-30 Sonoco Development, Inc. Water-resistant wound paperboard tube
CN107988845A (zh) * 2017-12-29 2018-05-04 安徽宏实光机电高科有限公司 一种纳米二氧化硅疏油增强复合壳聚糖施胶剂的制备方法

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US5514429A (en) * 1992-11-18 1996-05-07 New Oji Paper Co., Ltd. Cylindrical composite paperboard cushion core and process for producing same
US6193844B1 (en) * 1995-06-07 2001-02-27 Mclaughlin John R. Method for making paper using microparticles
US6372089B1 (en) * 1998-03-06 2002-04-16 Nalco Chemical Company Method of making paper

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JP2906174B2 (ja) * 1989-12-28 1999-06-14 日本ピー・エム・シー株式会社 製紙用サイズ剤組成物およびサイジング方法
SE9103140L (sv) * 1991-10-28 1993-04-29 Eka Nobel Ab Hydrofoberat papper
US5713289A (en) * 1995-06-05 1998-02-03 Model; Peter L. Corrugated pallet and pallet foot
US5961783A (en) * 1997-06-06 1999-10-05 Vinings Industries, Inc. Process for enhancing the strength and sizing properties of cellulosic fiber using a self-emulsifiable isocyanate and a coupling agent
US6818100B2 (en) * 2000-08-07 2004-11-16 Akzo Nobel N.V. Process for sizing paper

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Publication number Priority date Publication date Assignee Title
US4388150A (en) * 1980-05-28 1983-06-14 Eka Aktiebolag Papermaking and products made thereby
US5514429A (en) * 1992-11-18 1996-05-07 New Oji Paper Co., Ltd. Cylindrical composite paperboard cushion core and process for producing same
US6193844B1 (en) * 1995-06-07 2001-02-27 Mclaughlin John R. Method for making paper using microparticles
US6372089B1 (en) * 1998-03-06 2002-04-16 Nalco Chemical Company Method of making paper

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007070418A2 (fr) * 2005-12-14 2007-06-21 Sonoco Development, Inc. Carton dote de regions densifiees distinctes, son procede de fabrication et stratifie integrant celui-ci
WO2007070418A3 (fr) * 2005-12-14 2007-10-18 Sonoco Dev Inc Carton dote de regions densifiees distinctes, son procede de fabrication et stratifie integrant celui-ci
US7842362B2 (en) 2006-02-17 2010-11-30 Sonoco Development, Inc. Water-resistant wound paperboard tube
CN107988845A (zh) * 2017-12-29 2018-05-04 安徽宏实光机电高科有限公司 一种纳米二氧化硅疏油增强复合壳聚糖施胶剂的制备方法

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