EP3663247B1 - Wickelkernendschutz - Google Patents

Wickelkernendschutz Download PDF

Info

Publication number
EP3663247B1
EP3663247B1 EP18210900.9A EP18210900A EP3663247B1 EP 3663247 B1 EP3663247 B1 EP 3663247B1 EP 18210900 A EP18210900 A EP 18210900A EP 3663247 B1 EP3663247 B1 EP 3663247B1
Authority
EP
European Patent Office
Prior art keywords
core
winding core
base section
rigid base
shock absorbing
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.)
Active
Application number
EP18210900.9A
Other languages
English (en)
French (fr)
Other versions
EP3663247A1 (de
Inventor
Michael Van Deurse
Greg Sandford
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.)
Double E Co Inc
Original Assignee
Double E Co Inc
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 Double E Co Inc filed Critical Double E Co Inc
Priority to HRP20220154TT priority Critical patent/HRP20220154T1/hr
Priority to PL18210900T priority patent/PL3663247T3/pl
Priority to EP18210900.9A priority patent/EP3663247B1/de
Priority to ES18210900T priority patent/ES2906891T3/es
Publication of EP3663247A1 publication Critical patent/EP3663247A1/de
Application granted granted Critical
Publication of EP3663247B1 publication Critical patent/EP3663247B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/185—End caps, plugs or adapters
    • B65H75/187—Reinforcing end caps

Definitions

  • This invention relates to core tubes for a roll of paper or sheet material, and in particular, to protective ring elements attachable to core ends.
  • Applicants have found that there is a limited number of re-uses that a core can go through before it is damaged beyond usability. In some mills, the cores are re-used 4 to 7 times. In other mills, the cores can only be used once before needing to be replaced. Damage to a core is caused by multiple factors that all interplay. Examples of damage causality include the following.
  • WO 2011/154745 discloses a web winding core which has a hollow cylindrical shell.
  • the shell is 3-layered and has internal and external skins between which is a filler and which bonds the inner and outer skins together.
  • the filler is typically a lightweight natural material such as balsa or cork or maybe an artificial foamed polymer.
  • the internal and external skins may be reinforced resin.
  • the web winding core further comprises a winding core end protector.
  • the present invention addresses the factors causing core end damage.
  • the present invention is a core end protector comprised of a shock absorber and an annular, rigid attachment section that is attached to each end of a cardboard tissue core.
  • the invention end protectors are securely mounted on the ends of the core using any variety of means including fasteners, and adhesive.
  • the outer diameter of the core end protector does not extend beyond the outer diameter of the core.
  • the inner diameter does not extend beyond the inner diameter of the core.
  • the invention core end protectors are made both with a rigid base section that mates to the core end face and a softer, shock absorbing section that comes in contact with external forces and impact loads.
  • the rigid base section is made from metal or a high durometer rigid polymer.
  • the base section is intended to spread out an impact load to a larger area on the cardboard core, thereby reducing stress concentrations which cause core deformation, delamination and tearing.
  • the shock absorbing section is made from a softer durometer polymer or elastomeric material (such as urethane or rubber) characterized by surface toughness, overall flexibility upon impact, and high resistance to material creep and compression set under load. If dissimilar materials are used for the base section and shock absorbing section, the shock absorbing section can be bonded to the rigid base section. If molded from similar materials, they can be made in the same mold using two different durometer compounds.
  • the shock absorbing section has a material geometry designed like "nubs" which each flex individually upon impact and then return to its original shape. The fasteners hold the rigid base section directly to the core end, but do not come in contact with the shock absorbing section.
  • the present invention addresses the multiple problems associated with handling tissue rolls.
  • a winding core end protector 20 removably attached to the end 11 of a cardboard core 10.
  • the end protector 20 is annular and generally mirrors the structural annular shape of a core end 11.
  • the end protector external diameter is equal to or slightly less than the external diameter 16 of the cardboard core 10.
  • the internal diameter of the end protector is also approximately equal to the internal diameter of the cardboard core, but not smaller.
  • the end protector 20 is comprised of two sections, an annular, rigid base section 21, and an annular, shock absorbing section 30.
  • the rigid base section 21 mates directly to the core end 11.
  • the softer, shock absorbing section 30 is attached to the base section 21 and comes in contact with external forces and impact loads.
  • the rigid base section 21 2. is made from metal or a high durometer rigid polymer.
  • the rigid base section 21 is intended to spread out an impact load to a larger area on the cardboard core 10, thereby reducing stress concentrations which cause core deformation, delamination and tearing.
  • the rigid base section 21 also provides a non-flexing support for the fasteners 29 to tightly hold the end protector up against the core end 11.
  • the end protector shock absorbing section 30 is made from a softer durometer polymer or elastomeric material (such as urethane or rubber) characterized by surface toughness, overall flexibility upon impact, and high resistance to material creep and compression set under load. If dissimilar materials are used for the base section and shock absorbing section, the shock absorbing section may be bonded to the rigid base section. If molded from similar materials, they may be made in the same mold using two different durometer compounds.
  • the shock absorbing section 30 has a material geometry designed like "nubs" 32 which each flex individually upon impact and then return to its original shape.
  • the rigid base section 21 has a plurality of holes 22 formed therein, each said hole adapted to receive a fastener 29 to hold the rigid base section 21 directly to the core end 11. Pilot holes 19 may be formed into the core end 11 to assist the fastener insertion into the core.
  • the fasteners 29 do not come in contact with the shock absorbing section 30.
  • the shock absorbing section has a plurality of holes 31 formed therein between the nubs 32 to allow the fasteners to pass through or bypass the shock absorption material and engage the rigid base section 21 with a core end 11.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Cable Accessories (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Claims (1)

  1. Wickelkernendschutz (20), umfassend:
    einen ringförmigen, starren Basisabschnitt (21), der direkt mit einem Ende (11) eines Wickelkerns verbunden ist; und
    einen ringförmigen, stoßdämpfenden Abschnitt (30), der fest an dem starren Basisabschnitt (21) angebracht ist;
    wobei der Wickelkernendschutz (20) einen Außendurchmesser im Allgemeinen gleich einem Wickelkernaußendurchmesser und einen Innendurchmesser im Allgemeinen gleich einem Wickelkerninnendurchmesser aufweist;
    wobei der starre Basisabschnitt (21) aus einem Material aus der Gruppe bestehend aus Metallen oder starren Polymeren mit hohem Durometer hergestellt ist; und der stoßdämpfende Abschnitt (30) des Endschutzes aus der Gruppe bestehend aus Polymeren mit weicherem Durometer oder elastomeren Materialien hergestellt ist, wobei die Materialien durch Oberflächenzähigkeit, Gesamtflexibilität bei Aufprall und hohe Beständigkeit gegen Materialkriechen und Druckverformung unter Belastung gekennzeichnet sind;
    wobei der starre Basisabschnitt eine Vielzahl von Löchern (22) aufweist, die darin gebildet sind, wobei jedes Loch (22) ausgelegt ist, um eine Befestigung (29) aufzunehmen, um den starren Basisabschnitt (21) direkt an dem Wickelkernende (11) zu halten;
    wobei der stoßdämpfende Abschnitt (30) eine Vielzahl von Hohlräumen aufweist, um zu ermöglichen, dass die Befestigungen durch den starren Basisabschnitt mit dem Wickelkernende gehen und damit in Eingriff treten; und
    dadurch gekennzeichnet, dass der stoßdämpfende Abschnitt aus einer Vielzahl von Noppen (32) mit einem Zwischenraum zwischen jeder benachbarten Noppe (32) und einer Vielzahl von Löchern (31) besteht, die zwischen den Noppen (32) gebildet sind, um zu ermöglichen, dass die Befestigungen durch den starren Basisabschnitt (21) mit dem Wickelkernende (11) gehen und damit in Eingriff treten.
EP18210900.9A 2018-12-06 2018-12-06 Wickelkernendschutz Active EP3663247B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
HRP20220154TT HRP20220154T1 (hr) 2018-12-06 2018-12-06 Zaštitnik za kraj jezgre namota
PL18210900T PL3663247T3 (pl) 2018-12-06 2018-12-06 Ochraniacz końca rdzenia do nawijania
EP18210900.9A EP3663247B1 (de) 2018-12-06 2018-12-06 Wickelkernendschutz
ES18210900T ES2906891T3 (es) 2018-12-06 2018-12-06 Protector de extremo de núcleo de enrollamiento

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18210900.9A EP3663247B1 (de) 2018-12-06 2018-12-06 Wickelkernendschutz

Publications (2)

Publication Number Publication Date
EP3663247A1 EP3663247A1 (de) 2020-06-10
EP3663247B1 true EP3663247B1 (de) 2022-01-26

Family

ID=64661105

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18210900.9A Active EP3663247B1 (de) 2018-12-06 2018-12-06 Wickelkernendschutz

Country Status (4)

Country Link
EP (1) EP3663247B1 (de)
ES (1) ES2906891T3 (de)
HR (1) HRP20220154T1 (de)
PL (1) PL3663247T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11518645B2 (en) * 2021-03-15 2022-12-06 Sonoco Development, Inc. Lightweight paper tube structure capable of high loading

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5441780A (en) * 1994-03-07 1995-08-15 Jefferson Smurfit Corporation Paper tube with integral end supports
DE202009016378U1 (de) * 2009-11-30 2010-03-11 Paul Sauer Gmbh & Co. Walzenfabrik Kg Wickelhülse mit Stirnseitenschutz
GB2481058A (en) * 2010-06-11 2011-12-14 Composite Core Technologies Ltd Three layered web-winding core
JP6029604B2 (ja) * 2014-02-10 2016-11-24 大和川紙工株式会社 紙管

Also Published As

Publication number Publication date
EP3663247A1 (de) 2020-06-10
PL3663247T3 (pl) 2022-04-11
ES2906891T3 (es) 2022-04-20
HRP20220154T1 (hr) 2022-04-15

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