EP1481792A2 - Ensemble de gaufrage pour des matériaux en bande - Google Patents

Ensemble de gaufrage pour des matériaux en bande Download PDF

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Publication number
EP1481792A2
EP1481792A2 EP20040011997 EP04011997A EP1481792A2 EP 1481792 A2 EP1481792 A2 EP 1481792A2 EP 20040011997 EP20040011997 EP 20040011997 EP 04011997 A EP04011997 A EP 04011997A EP 1481792 A2 EP1481792 A2 EP 1481792A2
Authority
EP
European Patent Office
Prior art keywords
cylinders
cylinder
frusto
sections
embossing
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.)
Withdrawn
Application number
EP20040011997
Other languages
German (de)
English (en)
Other versions
EP1481792A3 (fr
Inventor
Tommasi Renzo
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.)
Rent SRL
Original Assignee
Rent SRL
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 Rent SRL filed Critical Rent SRL
Publication of EP1481792A2 publication Critical patent/EP1481792A2/fr
Publication of EP1481792A3 publication Critical patent/EP1481792A3/fr
Withdrawn legal-status Critical Current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
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0723—Characteristics of the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F2201/00—Mechanical deformation of paper or cardboard without removing material
    • B31F2201/07—Embossing
    • B31F2201/0707—Embossing by tools working continuously
    • B31F2201/0715—The tools being rollers
    • B31F2201/0753—Roller supporting, positioning, driving means

Definitions

  • the present invention refers to a device for embossing web-like materials such as - typically - plies of paper, tissue-paper and the like, for producing multi-ply articles, for example serviettes or tissues, consisting of two or more embossed and mutually joined plies.
  • the embossing operation is used to increase the bulk and softness of the finished product, improving its moisture holding capacity and giving it a more attractive appearance, thanks to the decoration that the embossing points are able to compose over the surface of the material.
  • embossing is carried out according to various methods in which the web of material passes into a lamination gap defined between two counter-rotating cylinders.
  • one of the two cylinders is provided with a distribution of radial projections, constituting the embossing points.
  • the other cylinder has a smooth surface.
  • the height of the lamination gap that is a function of the radial distance between the cylinders, is suitably sized in relation to the thickness of the material being treated, so that the latter is pressed by the points of one cylinder against the smooth surface of the other, thus realizing the embossing.
  • embossing assemblies have been proposed equipped with a system for adjusting the radial distance between the cylinders, suitable for allowing the elimination of the excess clearance that progressively forms due to the wear.
  • each of said end structures comprises, between a support upright and the actual body of the cylinder, an annular element, defining on the inside a frusto-conical seat for engagement with a corresponding portion formed by said body.
  • the annular element defines a cylindrical surface cooperating with the other cylinder of the assembly.
  • the object of the present invention is therefore that of providing a new embossing assembly for web-like materials, in particular but not exclusively for the production of multi-ply paper articles, which allows an accurate adjustment of the height of the lamination gap defined between the two counter-rotating cylinders, by means of a much simpler solution with respect to the known one referred to above.
  • a tip-to-plane embossing assembly comprises a pair of cylinders 1, 2 rotatably supported by a housing 3.
  • the general configuration of the assembly corresponds to the conventional one, with the two cylinders on top of one another so as to define a lamination gap G along a generatrix of mutual tangency.
  • Traditional is also the drive system of the cylinders, not represented in the figure.
  • the lower cylinder 1 exhibits a smooth surface on the lamination gap G
  • the upper cylinder 2 is the actual embossing cylinder, carrying a distribution of embossing points 4.
  • Both of the cylinders have respective shaft portions 1b, 2b, projecting axially from the actual body 1a, 2a and rotatably supported by uprights 3a of the housing 3, through rolling bearings 5 arranged in seats 6.
  • one of the two cylinders, in the example the upper cylinder 2 is supported in an axially fixed manner, whereas the position of the other cylinder 1 along its own axis can be varied.
  • each shaft portion 1a on the corresponding upright 3a comprises a pair of stop rings 7, engaged but not locked within the seat 6, defining respective shoulders 7a on which there abuts at the two sides the outer ring of the bearing 5, in turn not locked within the seat 6.
  • the rings also have respective peripheral lips 7b, projecting radially a certain distance from the upright 3a.
  • the upright 3a and the lips 7a are connected via screw members 8, schematically represented by the relative axes, distributed equally spaced apart along the perimeter of the lips. The connection is such that thanks to a coordinated screwing of the screw members it is possible to control the axial position of the rings 7, and consequently of the bearings 5, and thus of the entire lower cylinder 1.
  • the body 1a, 2a of each of them has frusto-conical end sections 1c, 1d, 2c, 2d, forming matching pairs and radially pressing each other with a certain degree of preload. More specifically, with reference to the configuration of the example, the lower cylinder 1 has, at the right-hand end (seen as in the figure), a section 1c with increasing diameter starting from the diameter of the body 1a, up to the edge beyond which the relative shaft portion 1b projects.
  • the body 2a of the upper cylinder 2 has an equal and opposite tapering section 2c, i.e. with a decreasing diameter towards the end.
  • the end section detaches from the working surface of the relative body with a step, this being obviously necessary to ensure a suitable spacing between the working surfaces of the two cylinders, i.e. those which define the lamination gap G.
  • two frusto-conical sections 1d, 2d fit together in an analogous manner, the lower cylinder 1 and the upper cylinder 2 having this time, respectively, a decreasing and increasing diameter moving towards the extreme edge of the body.
  • the normal working of the embossing assembly according to the invention is totally conventional.
  • the two cylinders 1 and 2 rotate in opposite directions with the frusto-conical sections 1c, 2c, 1d, 2d that are kept in contact with each other.
  • the screw members 8 are operated to command an axial displacement of the lower cylinder 1, in this case from left to right.
  • the angle of the frusto-conical sections shall be selected according to the specific circumstances of use, above all in relation to the size of the cylinders and the characteristics of the means for controlling the axial position.
  • a semi-opening angle of the cone of around 5° shall, however, be compatible with the most typical sizes of the assemblies adopted in the field to which reference has been made.
  • the invention is not, however, limited to the embodiment described and illustrated above, but comprises any constructive variation thereof.
  • an equivalent result can be obtained with an axially movable arrangement of also (or only) the upper cylinder, and with the frusto-conical sections arranged mirror-like with respect to the arrangement of the illustrated embodiment.
  • the means for controlling the axial position can also have different constructive arrangements from those exemplified with the rings 7 and the adjustment screw members 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Paper (AREA)
  • Credit Cards Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP04011997A 2003-05-23 2004-05-20 Ensemble de gaufrage pour des matériaux en bande Withdrawn EP1481792A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITFI20030056 ITFI20030056U1 (it) 2003-05-23 2003-05-23 Gruppo goffratore per materiali nastriformi, in particolare ma non esclusivamente per la realizzazione di prodotti cartacei multivelo
ITFI20030056U 2003-05-23

Publications (2)

Publication Number Publication Date
EP1481792A2 true EP1481792A2 (fr) 2004-12-01
EP1481792A3 EP1481792A3 (fr) 2005-06-01

Family

ID=33105031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04011997A Withdrawn EP1481792A3 (fr) 2003-05-23 2004-05-20 Ensemble de gaufrage pour des matériaux en bande

Country Status (2)

Country Link
EP (1) EP1481792A3 (fr)
IT (1) ITFI20030056U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071210A1 (fr) * 2006-12-13 2008-06-19 Sca Hygiene Products Gmbh Procédé de fabrication de produit d'hygiène, appareil pour la fabrication d'un produit d'hygiène et produit d'hygiène
CN104755877A (zh) * 2012-09-20 2015-07-01 伯格利-格拉维瑞斯股份有限公司 成套配合压花辊的生产方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926666A (en) * 1987-06-19 1990-05-22 Grapha-Holding Ag Assembly for adjusting the rolls of punching and like machines
US5388490A (en) * 1990-05-10 1995-02-14 Buck; Byron L. Rotary die cutting system and method for sheet material
NL9500508A (nl) * 1995-03-14 1996-10-01 Stichting Administratiekantoor Snijinrichting met roteerbare snijwalsen.
US6368539B1 (en) * 1999-07-30 2002-04-09 Potlatch Corporation Methods of embossing materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926666A (en) * 1987-06-19 1990-05-22 Grapha-Holding Ag Assembly for adjusting the rolls of punching and like machines
US5388490A (en) * 1990-05-10 1995-02-14 Buck; Byron L. Rotary die cutting system and method for sheet material
NL9500508A (nl) * 1995-03-14 1996-10-01 Stichting Administratiekantoor Snijinrichting met roteerbare snijwalsen.
US6368539B1 (en) * 1999-07-30 2002-04-09 Potlatch Corporation Methods of embossing materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008071210A1 (fr) * 2006-12-13 2008-06-19 Sca Hygiene Products Gmbh Procédé de fabrication de produit d'hygiène, appareil pour la fabrication d'un produit d'hygiène et produit d'hygiène
CN104755877A (zh) * 2012-09-20 2015-07-01 伯格利-格拉维瑞斯股份有限公司 成套配合压花辊的生产方法

Also Published As

Publication number Publication date
EP1481792A3 (fr) 2005-06-01
ITFI20030056U1 (it) 2004-11-24

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