US3737963A - Roller construction - Google Patents

Roller construction Download PDF

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Publication number
US3737963A
US3737963A US00111988A US3737963DA US3737963A US 3737963 A US3737963 A US 3737963A US 00111988 A US00111988 A US 00111988A US 3737963D A US3737963D A US 3737963DA US 3737963 A US3737963 A US 3737963A
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US
United States
Prior art keywords
roller
tube
jacket
electrically conductive
synthetic plastic
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
US00111988A
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English (en)
Inventor
Hans Christof Thermann
Simon Postulka
Hermann Vordergruegge
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Individual
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Individual
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Publication date
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Publication of US3737963A publication Critical patent/US3737963A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors 
    • B65G39/02—Adaptations of individual rollers and supports therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
    • B29D99/0035—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions rollers or cylinders having an axial length of several times the diameter, e.g. for embossing, pressing, or printing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/02—Rollers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/36—Guiding mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
    • B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2340/00—Apparatus for treating textiles

Definitions

  • ABSTRACT A roller for textile or similar machines is made by producing a calibrated tube of predetermined configuration which is permeable to a synthetic plastic material, and then embedding it in the synthetic plastic material so that the latter forms a jacket around the tube and also penetrates interstices of the latter.
  • the present invention relates generally to rollers, and more particularly to an improved roller construction. Still more specifically the invention relates to an improved roller for use in textile machines, paper machines, foil-making machines, conveying apparatus and the like, and to a method of making the same.
  • rollers which may be driven or which may be freely turnable.
  • Such rollers have various different purposes, for instance a conveying'function, a guide function or the like. They come incontact with different materials, for instance with dry materials such as webs of paper or other substances, or they may be subject to special stresses when they are used in so-called wet machines, for instance in washing machines, in driers or in steaming machines, where they come in contact with liquid, vapor or gaseous media at various different temperatures.
  • rollers of special steel or of steel tubes whose outer jacket consists of special steel or which is rubber coated, chromium coated or protected in'another manner. It is also known to make such rollers of non-ferrous materials.
  • rollers made of still other materials and in still other ways are also known. It is for instance known to produce glass fiber reinforced rollers of synthetic plastic material which, however, are used only to a very limited extent in the type of machines mentioned above. The reason for this limited utilization of this latter type of rollers is the fact that their dimensional accuracy and dimensional stability, as well as their operating characteristics during rotation and their surface characteristics, largely due to the low quantity of glass fibers which under current manufacturing methods can be incorporated, do not live up to the requirements which are made of rollers of this type.
  • An additional object of the invention is to provide a novel method of making such a roller.
  • a roller particularly for textile and analogous machines, comprising a calibrated tube of predetermined configuration composed of a first material and having permeable interstices.
  • a jacket of synthetic plastic second material surrounds and embeds 'vention to provide an improved roller of the type under the tube interiorly and exteriorly and permeates the interstices thereof.
  • the permeable tube is preferably made of glass fibers, glass fiber compositions or the like with a small addition of hardenable binder, especially by winding such material into tubular form.
  • Such a tube is already stable as to its dimensions and configuration even before it is provided with the jacket of synthetic plastic material, and can be subjected to relatively strong stresses without undergoing permanent deformations.
  • the outer jacket of synthetic plastic material can be applied in relatively small but even thickness and a proper coverage of the permeable tube is obtained.
  • the thickness of the outer jacket will be approximately 7.5 mm, and the glass content of the roller will be substantially between percent by weight or more.
  • additives which are preferably primarily provided at the exposed surface or surfaces of the roller. Such additives may be provided to obtain an anti-adhesive surface or a surface which is particularly resistant to aggressive chemicals, or for similar purposes.
  • Another embodiment of the invention also provides for embedding in or between the individual layers-that is tube and jacketof the roller electrically conductive matter such as electrically conductive filaments, foils or tapes, or an electrically conductive portion composed of pulverulent material, such conductive matter being fixed and grounded.
  • one or more strips or the .like .of glass fiber material may be saturated or similarly treated with small quantities of hardenable bindersuch as a synthetic plastic-and helically wound onto a heated cylindrical mandrel to produce several layers thereon.
  • hardenable binder such as a synthetic plastic-and helically wound onto a heated cylindrical mandrel to produce several layers thereon.
  • the material of which the outer jacket is to be composed is introduced in flowable state into the interior of the permeable tube and the mold rotated so that the material will penetrate interstices of the permeable tube and enter into the am nular gap between the outer surface of the tube and the inner surface of the mold where it will formthe desired plastic jacket.
  • the necessary quantity of glass textile preferably but not necessarily in form of tapes or ribbons orthe like, is advantageously wound endlessly in such a manner that the glass fibers will not be cut or severed at the opposite ends of the permeable tube which is being produced.
  • FIG. 1 illustrates in a fragmentary longitudinal section one embodiment of the invention
  • FIG. la is a view similar to FIG. 1 but illustrating another embodiment of the invention.
  • FIG. 2 is a view taken on line IIII illustrating a fragmentary section
  • FIG. 3 is a sectional view taken on line III-III of FIG.
  • FIG. 4 is an elevational view illustrating a winding mandrel for producing the tube to be embedded in a roller according to the present invention
  • FIG. 5 is a diagrammatic axial section, illustrating a further embodiment.
  • FIG. 6 is a view similar to FIG. 5 but showing still another embodiment of the invention.
  • reference numeral 1 identifies a permeable premanufactured calibrated and straightened tube 1, embedded in and surrounded by a jacket 2 of hardenable synthetic plastic material.
  • FIG. 1 shows that the opposite ends of the roller produced according to the present invention (only one end shown) have secured to them cup-shaped elements 6 whose circumferential wall 7 is provided with perforations 8.
  • FIG. 1 shows that the opposite ends of the roller produced according to the present invention (only one end shown) have secured to them cup-shaped elements 6 whose circumferential wall 7 is provided with perforations 8.
  • FIG. la shows that the tube 1 is again surrounded by an outer layer 2 and an inner layer 3 together making up the jacket of synthetic plastic material.
  • cup-shaped components here identified with reference numeral 4 and preferably but not necessarily consisting of metallic material.
  • the components 4 are inserted into the internal space of the tube and connected with the inner layer 3 via a suitable adhesive. They serve for accommodating and holding journals-as do the elements 6 of FIG. 1for a shaft passing through the interior of the roller or for pins, which in any case will serve for journalling the roller for rotation.
  • FIG. 2 shows that the surface of the jacket 2 may be provided with additive materials 12 of any suitable type in order to influence the characteristics of the surface, that is to make it anti-adhesive, to make it more resistant to attack by aggressive chemicals, or to provide for a desired characteristic.
  • FIG. 4 shows by way of example how a roller according to the present invention may be produced.
  • a tape or ribbon 13 of a glass fiber preferably consisting of fiber wovings oriented in requisite manner, is wound onto a heatable cylindrical mandrel 14 in helical configuration, either at identical or variable pitch to produce several layers overlying one another, with the strip being at requisite tension and with small quantities of hardenable binder on a synthetic plastic basis being added.
  • the ribbon-supply bobbin 1,5 is moved along the mandrel 14 in the direction of the double-headed arrow 16 in known manner.
  • the mandrel 14 is provided with abutment discs 17 and 18 at its opposite ends and as soon as the ribbon 13 reaches one of these discs a bracket 19 or 20 is moved into position as shown about which the ribbon 13 is convoluted through before it is reversed to wind the next superimposed layer. This makes it unnecessary to cut or sever the fibers of the ribbon at the opposite axial ends of the winding.
  • the material for the jacket 2, 3 is introduced in flowable form into the interior of the permeable tube.
  • the mold is rotated whereby the synthetic plastic material will pass through interstices of the tube due to centrifugal force and enter into the annular gap between the outer surface of the tube and the inner surface of the mold.
  • This gap thus becomes filled, as well as any voids, pores or interstices of the tube and, if a requisite quantity of the plastic material in flowable state has been initially introduced into the interior of the tube, not only an outer layer 2 will.form in this gap but also an inner layer and the inner circumferential surface of the tube 1.
  • the distribution of the flowable material is uniform and consequently the layers 2 and 3 will be free of voids and of constant and uniform thickness throughout.
  • the cup-shaped components 4 or 6 can be centrally fixed by a suitable device provided on the mold before the latter is rotated. Upon rotation the material for the jacket will then also very evenly penetrate the ends of the permeable tube and enter through the perforation of the walls of the cup-shaped components 4 or 6 whereby the latter are connected with the tube into a unitary whole.
  • the roller in FIG. 5 has a jacket 50 in which electrically conductive material 51 is incorporated, e.g. embedded carbon particles.
  • the tube is designated with numeral 53 and the inner layer with numeral 54.
  • Additional conductive material may be provided in form of a sheet-material 55 located between tube 53 and jacket 50. Frictionally created static electricity is conducted away from the roller via the shaft 52 thereof.
  • FIG. 6, finally, shows a roller where conductive filamentary matter 63 is embedded in the jacket 60.
  • the tube and the inner layer are respectively designated with numerals 61 and 62. Static electricity is conducted away by shaft 64.
  • a roller particularly for use in textile and analogous machines, comprising a dimensionally stabilized calibrated intersticed tube permeable to flowable material and composed of a plurality of layers of convoluted fiber-glass strip and just sufficient hardened bonding resin to unite said layers into a self-supporting structure; and a jacket of a synthetic plastic material permeating the interstices of said tube and completely coating the exterior and at least partly coating the interior surface of said tube.
  • a roller as defined in claim 1 said roller having spaced opposite ends; and further comprising at least two cup-shaped elements provided at the respective ends for accommodating journal means for journalling said roller for rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Moulding By Coating Moulds (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Reinforced Plastic Materials (AREA)
US00111988A 1970-02-07 1971-02-02 Roller construction Expired - Lifetime US3737963A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2005619A DE2005619C3 (de) 1970-02-07 1970-02-07 Verfahren zum Herstellen einer mit Fasern verstärkten Walze

Publications (1)

Publication Number Publication Date
US3737963A true US3737963A (en) 1973-06-12

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ID=5761682

Family Applications (1)

Application Number Title Priority Date Filing Date
US00111988A Expired - Lifetime US3737963A (en) 1970-02-07 1971-02-02 Roller construction

Country Status (6)

Country Link
US (1) US3737963A (de)
CH (1) CH547964A (de)
DE (1) DE2005619C3 (de)
FR (1) FR2079313B1 (de)
GB (1) GB1323823A (de)
NL (1) NL7101409A (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007680A (en) * 1974-07-03 1977-02-15 Pfleger Frank G Gravure printing cylinders
US4313981A (en) * 1976-10-27 1982-02-02 Ricoh Company, Ltd. Method of forming a roll protective layer
US4368568A (en) * 1979-08-10 1983-01-18 Yamauchi Rubber Industry Co., Ltd. Elastomeric material covered rolls and a method of making the same
US4779320A (en) * 1986-02-15 1988-10-25 Kleinewefers Gmbh Roll for use in calenders
US5154673A (en) * 1989-06-19 1992-10-13 Bando Chemical Industries, Ltd. Transmission weight roller
EP0671253A2 (de) * 1994-03-08 1995-09-13 SYFAL S.r.l. Verfahren zur Herstellung von mit elastischem Material auf Silikonbasis beschichteten Rollen, und Vorrichtung und Stützstruktur zur Durchführung dieses Verfahrens
US6428455B1 (en) * 1999-04-29 2002-08-06 Voith Sulzer Papiertechnik Patent Gmbh Resilient roll
US6468193B1 (en) * 1999-08-13 2002-10-22 Fuji Xerox Co., Ltd. Liquid toner type image formation apparatus squeeze roller
US6493938B1 (en) * 1997-05-30 2002-12-17 Metso Paper, Inc. Thermoplastic-coated roll, method for manufacture and calendering of the thermoplastic-coated roll for use in paper/board machines
ES2214155A1 (es) * 2004-03-12 2004-09-01 Bezanmetal S.L. Rodillo de soporte resistente para cinta transportadora apto para instalarse en ambientes agresivos.
ES2214156A1 (es) * 2004-03-12 2004-09-01 Benzanmetal S.L. Rodillo de soporte protegido para cinta transportadora apto para instalarse en ambientes agresivos.
ES2214157A1 (es) * 2004-03-12 2004-09-01 Bezanmetal S.L. Rodillo de soporte con eje mejorado para cinta transportadora apto para instalarse en ambientes agresivos.
US7328785B2 (en) 1998-07-31 2008-02-12 Shuttleworth, Inc. Low electrostatic discharge conveyor
WO2014099951A1 (en) * 2012-12-20 2014-06-26 3M Innovative Properties Company Static reduction roller and method for reducing static on a web

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9314568U1 (de) * 1993-09-27 1995-02-02 Eduard Küsters Maschinenfabrik GmbH & Co KG, 47805 Krefeld Walze

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1543382A (en) * 1923-11-09 1925-06-23 Rodney Hunt Machine Co End support for hollow rolls
FR877900A (fr) * 1941-01-28 1943-01-05 Olympia Buromaschinenwerke A G Cylindre de frappe pour machines à écrire
US2369635A (en) * 1941-04-19 1945-02-20 Dayton Rubber Mfg Co Covering for worsted type spinning rolls
US2570935A (en) * 1946-10-25 1951-10-09 Dayton Rubber Company Spinning cot
US2614058A (en) * 1948-06-03 1952-10-14 Richard J Francis Methods of forming reinforced hollow plastic articles
GB716863A (en) * 1950-10-10 1954-10-13 Ici Ltd Improvements in or relating to rollers for processing plastic and other materials and the electrical heating thereof
US2889613A (en) * 1956-12-03 1959-06-09 Edward J Madara Paint roller
US3081206A (en) * 1956-12-31 1963-03-12 Robert W Hannah Press roller, and method of producing same
US3395636A (en) * 1966-04-27 1968-08-06 Sw Ind Inc Construction of roll for machinery
US3402449A (en) * 1964-05-08 1968-09-24 Windmoeller & Hoelscher Printing cylinder and process of manufacturing the same
US3625146A (en) * 1969-06-02 1971-12-07 Hurletron Inc Impression roller for current-assisted printing

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008493A (en) * 1955-07-06 1961-11-14 Union Carbide Corp Composite plastic piping
SE300546B (de) * 1964-11-06 1968-04-29 Hoeganaesmetoder Ab
CH466201A (de) * 1968-05-28 1968-12-15 Grace W R & Co Komprimierbare poröse Schicht und Verfahren zu ihrer Herstellung

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1543382A (en) * 1923-11-09 1925-06-23 Rodney Hunt Machine Co End support for hollow rolls
FR877900A (fr) * 1941-01-28 1943-01-05 Olympia Buromaschinenwerke A G Cylindre de frappe pour machines à écrire
US2369635A (en) * 1941-04-19 1945-02-20 Dayton Rubber Mfg Co Covering for worsted type spinning rolls
US2570935A (en) * 1946-10-25 1951-10-09 Dayton Rubber Company Spinning cot
US2614058A (en) * 1948-06-03 1952-10-14 Richard J Francis Methods of forming reinforced hollow plastic articles
GB716863A (en) * 1950-10-10 1954-10-13 Ici Ltd Improvements in or relating to rollers for processing plastic and other materials and the electrical heating thereof
US2889613A (en) * 1956-12-03 1959-06-09 Edward J Madara Paint roller
US3081206A (en) * 1956-12-31 1963-03-12 Robert W Hannah Press roller, and method of producing same
US3402449A (en) * 1964-05-08 1968-09-24 Windmoeller & Hoelscher Printing cylinder and process of manufacturing the same
US3395636A (en) * 1966-04-27 1968-08-06 Sw Ind Inc Construction of roll for machinery
US3625146A (en) * 1969-06-02 1971-12-07 Hurletron Inc Impression roller for current-assisted printing

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007680A (en) * 1974-07-03 1977-02-15 Pfleger Frank G Gravure printing cylinders
US4313981A (en) * 1976-10-27 1982-02-02 Ricoh Company, Ltd. Method of forming a roll protective layer
US4368568A (en) * 1979-08-10 1983-01-18 Yamauchi Rubber Industry Co., Ltd. Elastomeric material covered rolls and a method of making the same
US4779320A (en) * 1986-02-15 1988-10-25 Kleinewefers Gmbh Roll for use in calenders
US5154673A (en) * 1989-06-19 1992-10-13 Bando Chemical Industries, Ltd. Transmission weight roller
EP0671253A2 (de) * 1994-03-08 1995-09-13 SYFAL S.r.l. Verfahren zur Herstellung von mit elastischem Material auf Silikonbasis beschichteten Rollen, und Vorrichtung und Stützstruktur zur Durchführung dieses Verfahrens
EP0671253A3 (de) * 1994-03-08 1997-10-15 Syfal Srl Verfahren zur Herstellung von mit elastischem Material auf Silikonbasis beschichteten Rollen, und Vorrichtung und Stützstruktur zur Durchführung dieses Verfahrens.
US5736089A (en) * 1994-03-08 1998-04-07 Syfal S.R.L. Method for producing rollers covered with layers of silicone-based material
US6089848A (en) * 1994-03-08 2000-07-18 Syfal S.R.L. Apparatus for producing rollers with elastic silicone-based material layers
US6126583A (en) * 1994-03-08 2000-10-03 Syfal S.R.L. Supporting structure for producing rollers covered with layers of elastic silicone-based material
US6493938B1 (en) * 1997-05-30 2002-12-17 Metso Paper, Inc. Thermoplastic-coated roll, method for manufacture and calendering of the thermoplastic-coated roll for use in paper/board machines
US7328785B2 (en) 1998-07-31 2008-02-12 Shuttleworth, Inc. Low electrostatic discharge conveyor
US6428455B1 (en) * 1999-04-29 2002-08-06 Voith Sulzer Papiertechnik Patent Gmbh Resilient roll
US6468193B1 (en) * 1999-08-13 2002-10-22 Fuji Xerox Co., Ltd. Liquid toner type image formation apparatus squeeze roller
ES2214155A1 (es) * 2004-03-12 2004-09-01 Bezanmetal S.L. Rodillo de soporte resistente para cinta transportadora apto para instalarse en ambientes agresivos.
ES2214156A1 (es) * 2004-03-12 2004-09-01 Benzanmetal S.L. Rodillo de soporte protegido para cinta transportadora apto para instalarse en ambientes agresivos.
ES2214157A1 (es) * 2004-03-12 2004-09-01 Bezanmetal S.L. Rodillo de soporte con eje mejorado para cinta transportadora apto para instalarse en ambientes agresivos.
WO2014099951A1 (en) * 2012-12-20 2014-06-26 3M Innovative Properties Company Static reduction roller and method for reducing static on a web
CN104870345A (zh) * 2012-12-20 2015-08-26 3M创新有限公司 用于减少幅材上的静电的减少静电的辊和方法
CN104870345B (zh) * 2012-12-20 2016-10-12 3M创新有限公司 用于减少幅材上的静电的减少静电的辊和方法
US9908733B2 (en) 2012-12-20 2018-03-06 3M Innovative Properties Company Static reduction roller and method for reducing static on a web
TWI628978B (zh) * 2012-12-20 2018-07-01 ３Ｍ新設資產公司 靜電降低滾筒、用於降低靜電的裝置及用於降低靜電的方法
JP2019145510A (ja) * 2012-12-20 2019-08-29 スリーエム イノベイティブ プロパティズ カンパニー 静電気低減ローラー、及びウェブ上の静電気を低減させるための方法

Also Published As

Publication number Publication date
DE2005619C3 (de) 1973-11-22
CH547964A (de) 1974-04-11
NL7101409A (de) 1971-08-10
DE2005619B2 (de) 1973-04-19
DE2005619A1 (de) 1971-08-26
FR2079313B1 (de) 1975-06-06
FR2079313A1 (de) 1971-11-12
GB1323823A (en) 1973-07-18

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