US2141433A - Process and apparatus for varying the width of paper webs or the like, in particularfor the longitudinal creping of paper - Google Patents

Process and apparatus for varying the width of paper webs or the like, in particularfor the longitudinal creping of paper Download PDF

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Publication number
US2141433A
US2141433A US77430A US7743036A US2141433A US 2141433 A US2141433 A US 2141433A US 77430 A US77430 A US 77430A US 7743036 A US7743036 A US 7743036A US 2141433 A US2141433 A US 2141433A
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US
United States
Prior art keywords
roller
paper
creping
web
discs
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.)
Expired - Lifetime
Application number
US77430A
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English (en)
Inventor
Haas Rudolf
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.)
Zellsloff Fabrik Waldhof AG
Original Assignee
Zellsloff Fabrik Waldhof AG
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 Zellsloff Fabrik Waldhof AG filed Critical Zellsloff Fabrik Waldhof AG
Application granted granted Critical
Publication of US2141433A publication Critical patent/US2141433A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/04—Control of transmission; Equalising
    • H04B3/06—Control of transmission; Equalising by the transmitted signal
    • 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
    • B31F1/12—Crêping
    • B31F1/18—Crêping by tools arranged in the direction of web feed ; Longitudinal crêping, i.e. providing paper with crêpes parallel to the direction of web movement, e.g. for making paper elastic transversely to this direction
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/36—DC amplifiers in which all stages are DC-coupled with tubes only

Definitions

  • the body or roller a maybe described as having a stationary curved axis 1) as a reference line.
  • Figure 5 represents an imagiated before the axle A has been bent. In this.
  • the cross-section of the rubber tube is perfectly symmetrical in all directions.
  • the effect of this variation is that the radius of the body of revolution becomes smaller on the left and larger on the right.
  • the peripheral speed affecting the web also varies in the sense that it increases from the left to the right. This results in distortion of the web.
  • this subsidiary effect may be so great that paper effectively creped by the new method tears in the transverse direction, or that paper previously creped in the transverse direction loses its transverse creping again in the course of the longitudinal creping.
  • the disadvantageous subsidiary effect may be minimized by treating according to the new process paper which has been particularly creped in the transverse direction, the transverse creping then being reduced to the desired degree by the longitudinal creping.
  • the radial variations of the cross-sectional elements of the deformable mantle in most cases can only be prevented to a slight extent or not at all. In some points, they will even be increased more or less by the prevention of the tangential deformation. However, they also may be rendered harmless to a considerable extent according to a feature of the invention by making the thickness of the deformable mantle so small in comparison with the diameter of the body of revolu- 60 in diameter remains within narrow limits.
  • FIGS 8 to 14 show diagrammatically a few particularly simple and characteristic constructional examples of the invention, it being pointed out that any other construction, provided it corresponds to the meaning of the invention, must 4 be included in the scope of protection.
  • Figure 8 shows a section of a'portion of the periphery of a roller body sectioned parallel to the axis, which is imagined to be straight.
  • p is a mantle for example of rubber. It is provided with inwardly projecting flanges q which are secured to the discs 1' of inextensible material.
  • the three insertions drawn one above the other show that it is possible-for example to produce the whole of the deformable mantle by the winding on of a fabric which is inextensible in the peripheral direction, while being yieldable in the axial direction.
  • fabrics are often used for example for sanitary purposes although only in small widths.
  • the curved roller itself may also be stationary, provided merely the arrangement is so contrived cthat the band 'or system of cords carrying the web describes on the periphery of the roller paths corresponding to a variation in the length of the meridian line of the roller.
  • the roller may also be merely provided in part, as shown in Figure 4. Also if the body of revolution does not itself rotate, as-
  • Figure 2 shows that a considerable alteration in width is possible upon the. passageof the web through a single roller system, a plurality of units may of course be disposed in series for increasing the efi'ect.
  • the creping process according to the invention is continuous, it may be included directly in the running of a paper-mak ng machine or any other continuously operating apparatus, for example a reeling apparatus, a cross-cutter, a calender or the like.
  • a separate re-reeling'apparatus i for example may be obviated.
  • Figure 14 indicates the resolution of the mantle into individual profile strips parallel to the axis. These strips f are arrested in the tangential direction by the tooth-shaped projections g on the internal discs.
  • the slots between the individual strips I may bestraight, undulatory or of any other shape so that meshing or overlapping takes place.
  • Thisbandf may be provided with or without its own drive.
  • the new process and the new device may also beemployed for creping metal foil.
  • A'device for the longitudinal creping of webs of sheet material, particularly paper compris-' ing, in combination, a body having a curved surface which corresponds to part at least of the i surface of a roller with a stationary curved axis as a reference line, means for passing the web over said surface in a direction from the convex toward the concave part thereof, and a pressure: means which presses tlfe web against the said boiv.
  • a device for the longitudinal creping of webs of sheet material, particularly paper comprising, in combination, a resilient roller over which the web is passed, said roller having a curved stationary axisas a reference line on which 'it is adapted to rotate, means for causing-the web to travel over the surface of said roller in a direction from the convex toward the concave part thereof, and a pressure means which presses the web against the roller.
  • a device for the longitudinal creping of webs of sheet material, particularly paper, comerence line means for causing the web to travel. in a direction from the convex toward the concave part of the roller, and a pressure means which presses the web against the roller.
  • a device for the longitudinal creping of webs of sheet material, particularly paper comprising, in combination, a roller including a series of juxtaposed independent discs mounted for rotation on a common curved stationary axis as a reference line, an envelope of resilient material covering said discs and forming the roller surface, and a pressure means which presses the web against the roller.
  • a pressure means which presses the web against the roller.
  • a device for the longitudinal creping of sheets of material, particularly paper comprising, in combination, a roller having a series of juxtaposed independent discs mounted for rotation on a common curved stationary axis as a reference line, an envelope of resilient material covering saiddiscs and forming the roller surface, said surface being provided with longitudinal grooves, and a pressure means which presses the web against the roller.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Paper (AREA)
US77430A 1935-05-06 1936-05-01 Process and apparatus for varying the width of paper webs or the like, in particularfor the longitudinal creping of paper Expired - Lifetime US2141433A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE805907X 1935-05-06

Publications (1)

Publication Number Publication Date
US2141433A true US2141433A (en) 1938-12-27

Family

ID=6722478

Family Applications (1)

Application Number Title Priority Date Filing Date
US77430A Expired - Lifetime US2141433A (en) 1935-05-06 1936-05-01 Process and apparatus for varying the width of paper webs or the like, in particularfor the longitudinal creping of paper

Country Status (5)

Country Link
US (1) US2141433A (de)
AT (1) AT149882B (de)
CH (1) CH191861A (de)
FR (1) FR805907A (de)
GB (1) GB466733A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535734A (en) * 1945-01-08 1950-12-26 Grettve Karl Einar Lage Apparatus for creping paper and other crepable foils
US2761490A (en) * 1953-11-09 1956-09-04 Victor G Dugal Condensing of sheet materials
US2825117A (en) * 1952-06-20 1958-03-04 Bradford Dyers Ass Ltd Method and apparatus for treating sheet material
US2915109A (en) * 1957-05-07 1959-12-01 Richard R Walton Condensing traveling sheet materials
US2979131A (en) * 1959-06-10 1961-04-11 Grace W R & Co Method and apparatus for treating paper
US4234529A (en) * 1978-12-18 1980-11-18 Condec Corporation Method and apparatus for shaping plastic foams

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535734A (en) * 1945-01-08 1950-12-26 Grettve Karl Einar Lage Apparatus for creping paper and other crepable foils
US2825117A (en) * 1952-06-20 1958-03-04 Bradford Dyers Ass Ltd Method and apparatus for treating sheet material
US2761490A (en) * 1953-11-09 1956-09-04 Victor G Dugal Condensing of sheet materials
US2915109A (en) * 1957-05-07 1959-12-01 Richard R Walton Condensing traveling sheet materials
US2979131A (en) * 1959-06-10 1961-04-11 Grace W R & Co Method and apparatus for treating paper
US4234529A (en) * 1978-12-18 1980-11-18 Condec Corporation Method and apparatus for shaping plastic foams

Also Published As

Publication number Publication date
GB466733A (en) 1937-06-03
AT149882B (de) 1937-06-10
CH191861A (de) 1937-07-15
FR805907A (fr) 1936-12-03

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