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WO2011160763A1 - Support tubulaire perfectionné permettant d'enrouler un matériau en feuilles et procédé de fabrication de celui-ci - Google Patents

Support tubulaire perfectionné permettant d'enrouler un matériau en feuilles et procédé de fabrication de celui-ci Download PDF

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Publication number
WO2011160763A1
WO2011160763A1 PCT/EP2011/002704 EP2011002704W WO2011160763A1 WO 2011160763 A1 WO2011160763 A1 WO 2011160763A1 EP 2011002704 W EP2011002704 W EP 2011002704W WO 2011160763 A1 WO2011160763 A1 WO 2011160763A1
Authority
WO
WIPO (PCT)
Prior art keywords
support
sheets
tubular element
tubular
axis
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/EP2011/002704
Other languages
English (en)
Inventor
Eraldo Peccetti
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.)
Colines SpA
Original Assignee
Colines SpA
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 Colines SpA filed Critical Colines SpA
Priority to PL11724553T priority Critical patent/PL2585394T3/pl
Priority to US13/702,507 priority patent/US20130200205A1/en
Priority to ES11724553.0T priority patent/ES2519600T3/es
Priority to EP20110724553 priority patent/EP2585394B1/fr
Publication of WO2011160763A1 publication Critical patent/WO2011160763A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • 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
    • B65H75/50—Methods of making reels, bobbins, cop tubes, or the like by working an unspecified material, or several materials

Definitions

  • the present invention relates to a perfected tubular support for the winding of material in sheets, and a method for its production.
  • material in sheets means an extendable film for packaging, such as film made of LLDPE (liner low density polyethylene) , film made of PP (polypropylene) , film made of PET (polyester) , film made of PA (polyam- ide) , coextruded or laminated film and similar derivatives, produced in in-line and off-line production plants .
  • LLDPE linear low density polyethylene
  • PP polypropylene
  • PET polypropylene
  • PA polyam- ide
  • this material in sheets is wound onto a tubular support, called core, with a full wall made of cardboard or plastic, prevalently PVC (polyvinylchloride) .
  • Supports made of cardboard have known limits of use in the case of open environments, due to the fact that they cannot guarantee adequate performances in the case of adverse atmospheric conditions as they absorb humidity and water.
  • Cores consisting of a tubular element corrugated on its surface or side wall, are also known.
  • a general objective of the present invention is therefore to provide a solution which is both economical, ecocompatible and at the same time easy to produce and with an adequate resistance, which eliminates all the drawbacks indicated above.
  • a further objective is to provide a supporting ele- ment which is capable of substituting the known cores.
  • a tubular support has been conceived, for the winding of material in sheets, having the charac- teristics specified in the enclosed claims.
  • - figure 1 is a section of half of a portion of a tubular support or core of the known type under the effect of a radial force F;
  • FIG. 2 is a perspective view of a section of a tubular support for the winding of material in sheets produced according to a first embodiment of the inven- tion;
  • figure 3 is a section of half of a portion of the tubular support of figure 2 ;
  • - figure 4 is a section of a portion of a tubular support produced according to a second embodiment of the invention
  • - figure 5 is a perspective view illustrating the section of tubular support of figure 4.
  • FIGS. 2 and 3 illustrate a schematic view of a section of a tubular support for the winding of material in sheets produced according to the invention, indicated as a whole with 11.
  • This tubular support 11 forms a core and is composed of an internal tubular element 12 or corrugated tube and at least an outer coating element in sheets 13.
  • the internal tubular element 12 forms a continuous internal corrugated wall, in order to increase the moment of inertia of the support 11 contemporaneously reducing its weight, and consequently the quantity of material used for its production.
  • the outer coating element in sheets 13 forms a continuous smooth outer wall to guarantee the dimensional and geometrical regularity of the product wound in sheets (not shown) and eliminates some of the drawbacks of the known art which will be discussed hereunder.
  • figure 3 represents a portion in an enlarged longitudinal section of the internal tubular element 12 externally carrying the outer coating element in sheets 13.
  • the internal tubular element 12 has outer longitudinal portions 14 and internal longitudinal portions 15 which, connected by annular radial walls 16, form an inner corrugated wall .
  • annular radial walls 16 when connected by an outer longitudinal portion 14 define inner annular interspaces 17, whereas two annular radial walls 16, when connected by an inner longitudinal portion 15, define outer annular interspaces 18.
  • interspaces 17 and 18 have a substantially rectangular profile according to the axial section, whereas the longitudinal dimension X of the interspace 17 is substantially equal to that of the interspace 18.
  • the whole internal wall of the inner tubular element 12 has a form which is substantially similar to a square wave.
  • the overall length of the internal tubular element 12, substantially consisting of a plurality of alternat- ing interspaces 17 and 18, can vary in relation to the final use.
  • the thickness of the internal corrugated wall of the core can vary significantly depending on the resistance degree to be given to the support 11, object of the invention, which in turn depends on the crushing force exerted by the sheet wound thereon in rolls (not shown) .
  • Figure 2 illustrates the inner tubular element 12 also complete with the outer coating element in sheets 13 forming the support 11 of the invention.
  • the outer longitudinal portions 14 of the inner tubular element 12 are closely joined to the outer coating element in sheets 13 by contact present on the longitudi - nal dimensions X of the interspaces 17.
  • a second fundamental advantage ensured by the presence of the smooth outer coating element in sheets 13 is represented by the possibility of guaranteeing a flat and constant winding surface of the continuous sheet (not shown) , which definitely favours the formation of a final bobbin having a regular geometrical form.
  • the thickness Z of the outer coating element in sheets 13 can naturally vary significantly in relation to the mechanical action exerted by the sheet wound thereon (not shown) , which in turn depends on its very nature and winding procedure, obviously in addition to the quantity wound .
  • a support 11 having an outer diameter of about 59-63 mm and an internal diameter of about 50 mm (a typical application is the winding of extendable LLDPE film onto bobbins having a weight of about 2.5 kg for manual use in an industrial area) it would have an overall weight of about 90 g, against the approximate 300 g of a known cardboard support for an analogous application or 480 g of a traditional support made of PVC, the mechanical resistance characteristics naturally being considered as being the same .
  • a fundamental aspect of the product naturally also relates to the materials of which it is formed, which represent an essential element for its characterization.
  • the internal tubular element 12 substantially consists of a mixture, in a widely variable percentage, of glass fibre and polypropylene and/or polyethylene and/or polystyrene and/or polyamide and/or polyester and/or other similar products.
  • the polypropylene can, in turn, be a block copolymer, a random copolymer, a homopolymer or terpolymer, and can be a virgin or regenerated material, depending on the characteristics to be conferred to the core.
  • the same polyethylene can be a low-density, medium- density, high-density polyethylene, linear or metallo- cene, and can analogously be virgin or regenerated.
  • the glass fibre can be substituted with talc, in order to further reduce the final cost of the product.
  • the smooth outer coating element in sheets 13 in turn substantially consists of a polypropylene and/or polyethylene and/or polystyrene and/or polyamide and/or polyester and/or other similar products.
  • the polypropylene can in turn be a block copolymer, a random copolymer, a homopolymer or terpolymer, and can be a virgin or regenerated material, depending on the characteristics to be conferred to the support 11.
  • the same polyethylene can be a low-density, medium- density, high-density polyethylene, linear or metallo- cene, and can analogously be virgin or regenerated.
  • the continuous production process of the support 11 consists of the extrusion of a smooth tube through a horizontal extrusion head, said tube being thermoformed when it is still in the molten state by means of a so-called corrugator, which gives the desired form to the tubular element 12 through a forming process which also envisages the contemporaneous cooling of the melt .
  • the cooling of the tubular element 12 is effected contemporaneously with its forming by means of a series of moulds having the desired shape, equipped with a cooling system by cooled water or cold air conduction.
  • the above three systems can substantially all be used for the present invention, offering advantages and disadvantages, depending on the cases and sizes to be produced, and can therefore be chosen in the definition phase of the characteristics of the support to be produced .
  • a second extrusion head i.e. having the axis of the outlet die of the melt perpendicular with respect to the axis of the extruder connected to it .
  • the above head has a passage coaxial to the extru- sion die, and therefore perpendicular to the axis of the extruder, in which the corrugated tubular element 12 which has just been formed, passes.
  • the outer coating element in sheets 13 is then deposited on the tubular element 12 by direct extrusion; the fact that this is poured directly while it is still in the molten state avoids the use of any type of glue or other adhesive for firmly binding the tubular element 12, and in particular the longitudinal portions 14, with the outer coating element in sheets 13.
  • a cooling tank can be present, for bringing the outer coating element in sheets 13 to room temperature, and also for disposing of the heat supplied by the outer coating element in sheets 13 to the corrugated tubular element 12 by contact.
  • the last step of the production relates to the pulling and cutting unit of the continuous support thus formed, consisting of a pulling device with belts or wheels and a circular cutting system which allows a surface to be obtained which is absolutely perpendicular to the axis of the support 11 produced.
  • the production process can also be equipped with various accessories, such as dosing and gravimetric weighing systems to determine the effective flow-rate of the line and produce mixtures of different materials (such as, for example, coloured masterbatches) in continuous, surface defect control systems.
  • various accessories such as dosing and gravimetric weighing systems to determine the effective flow-rate of the line and produce mixtures of different materials (such as, for example, coloured masterbatches) in continuous, surface defect control systems.
  • FIGS 4 and 5 illustrate a further possible em- bodiment of the invention, where the same parts as those illustrated in figures 1-3 are indicated with the same reference numbers increased by 100.
  • the corrugated tubular element 112 is equipped with two coating elements 113 and 113', outer and inner respectively.
  • the specific characteristics, already described previously, of the support according to the invention, are thus enhanced.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un support tubulaire (11) permettant d'enrouler un matériau en feuilles comportant un élément tubulaire ondulé (12), l'élément tubulaire ondulé (12) étant positionné à l'intérieur d'au moins un élément de revêtement extérieur (13). L'élément tubulaire ondulé interne (12) comporte des parties longitudinales extérieures (14) et des parties longitudinales intérieures (15) raccordées par des parois radiales annulaires (16) qui forment une paroi ondulée intérieure. L'élément tubulaire ondulé interne (12) et l'élément de revêtement extérieur en feuilles (13) sont raccordés de manière correspondante avec les parties longitudinales extérieures (14). L'invention concerne aussi un élément tubulaire ondulé (112) positionné entre deux éléments de revêtement en feuilles (113, 113'), extérieur et intérieur respectivement.
PCT/EP2011/002704 2010-06-23 2011-05-31 Support tubulaire perfectionné permettant d'enrouler un matériau en feuilles et procédé de fabrication de celui-ci Ceased WO2011160763A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL11724553T PL2585394T3 (pl) 2010-06-23 2011-05-31 Udoskonalona podpora rurowa do nawijania materiału w arkuszach oraz sposób jej produkcji
US13/702,507 US20130200205A1 (en) 2010-06-23 2011-05-31 Perfected tubular support for the winding of material in sheets and method for its production
ES11724553.0T ES2519600T3 (es) 2010-06-23 2011-05-31 Soporte tubular perfeccionado para el devanado de material en láminas y procedimiento para la producción del mismo
EP20110724553 EP2585394B1 (fr) 2010-06-23 2011-05-31 Support tubulaire perfectionné permettant d'enrouler un matériau en feuilles et procédé de fabrication de celui-ci

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITMI2010A001139A IT1400701B1 (it) 2010-06-23 2010-06-23 Supporto tubolare per l'avvolgimento di materiale in foglio
ITMI2010A001139 2010-06-23
ITMI2010A001960A IT1402742B1 (it) 2010-06-23 2010-10-25 Supporto tubolare perfezionato per l'avvolgimento di materiale in foglio e metodo per la sua realizzazione
ITMI2010A001960 2010-10-25

Publications (1)

Publication Number Publication Date
WO2011160763A1 true WO2011160763A1 (fr) 2011-12-29

Family

ID=43500988

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/002704 Ceased WO2011160763A1 (fr) 2010-06-23 2011-05-31 Support tubulaire perfectionné permettant d'enrouler un matériau en feuilles et procédé de fabrication de celui-ci

Country Status (6)

Country Link
US (1) US20130200205A1 (fr)
EP (1) EP2585394B1 (fr)
ES (1) ES2519600T3 (fr)
IT (2) IT1400701B1 (fr)
PL (1) PL2585394T3 (fr)
WO (1) WO2011160763A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1051660A (en) * 1912-01-27 1913-01-28 James H Amesbury Corrugating-machine.
US4442686A (en) * 1981-06-19 1984-04-17 Firma Carl Freudenberg Support tubes for cross-wound coils and cross-windings
WO1993016947A1 (fr) * 1992-02-24 1993-09-02 Stephen Kleykamp Mandrins anneles en plastique
EP0729911A2 (fr) * 1995-03-03 1996-09-04 Alcan Deutschland GmbH Noyau d'enroulement métallique
EP1598297A1 (fr) * 2004-05-17 2005-11-23 Promopack SPA Noyau pour rouleaux de bande

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2394639A (en) * 1942-11-10 1946-02-12 Warren A Seem Apparatus for manufacture or converting of textile yarn
US3522700A (en) * 1968-10-23 1970-08-04 Leesona Corp Method and apparatus for processing yarn
US3997929A (en) * 1972-09-29 1976-12-21 Firma Carl Freudenberg Carrier sleeve
US4817673A (en) * 1986-05-08 1989-04-04 Atlas Powder Company Fuse tube with reinforcing element
US5727753A (en) * 1995-12-05 1998-03-17 The Servants, Inc. Web tension equalizer roll
US6586110B1 (en) * 2000-07-07 2003-07-01 Delphi Technologies, Inc. Contoured metal structural members and methods for making the same
US6893733B2 (en) * 2000-07-07 2005-05-17 Delphi Technologies, Inc. Modified contoured crushable structural members and methods for making the same
US6719242B2 (en) * 2000-12-01 2004-04-13 Sonoco Development, Inc. Composite core
US7204451B2 (en) * 2004-02-25 2007-04-17 Sonoco Development, Inc. Winding core and associated method
US20060280883A1 (en) * 2005-06-14 2006-12-14 Sonoco Development, Inc. Wound sandwich tube with corrugated shell

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1051660A (en) * 1912-01-27 1913-01-28 James H Amesbury Corrugating-machine.
US4442686A (en) * 1981-06-19 1984-04-17 Firma Carl Freudenberg Support tubes for cross-wound coils and cross-windings
WO1993016947A1 (fr) * 1992-02-24 1993-09-02 Stephen Kleykamp Mandrins anneles en plastique
EP0729911A2 (fr) * 1995-03-03 1996-09-04 Alcan Deutschland GmbH Noyau d'enroulement métallique
EP1598297A1 (fr) * 2004-05-17 2005-11-23 Promopack SPA Noyau pour rouleaux de bande

Also Published As

Publication number Publication date
ITMI20101139A1 (it) 2011-12-24
IT1402742B1 (it) 2013-09-18
EP2585394A1 (fr) 2013-05-01
PL2585394T3 (pl) 2015-01-30
IT1400701B1 (it) 2013-06-28
ES2519600T3 (es) 2014-11-07
US20130200205A1 (en) 2013-08-08
ITMI20101960A1 (it) 2011-12-24
EP2585394B1 (fr) 2014-07-30

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