EP1475163A1 - Vorrichtung für die Beschichtung von Filmen mit Wässrigem- oder Heissschmelz-Klebstoff - Google Patents

Vorrichtung für die Beschichtung von Filmen mit Wässrigem- oder Heissschmelz-Klebstoff Download PDF

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Publication number
EP1475163A1
EP1475163A1 EP04101906A EP04101906A EP1475163A1 EP 1475163 A1 EP1475163 A1 EP 1475163A1 EP 04101906 A EP04101906 A EP 04101906A EP 04101906 A EP04101906 A EP 04101906A EP 1475163 A1 EP1475163 A1 EP 1475163A1
Authority
EP
European Patent Office
Prior art keywords
station
plant
spreading
water
hot
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Withdrawn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
EP04101906A
Other languages
English (en)
French (fr)
Inventor
Claudio Garella
Paolo Garella
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.)
Converting Machinery Sideco Srl
Original Assignee
Converting Machinery Sideco 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 Converting Machinery Sideco Srl filed Critical Converting Machinery Sideco Srl
Publication of EP1475163A1 publication Critical patent/EP1475163A1/de
Withdrawn legal-status Critical Current

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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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/10—Mechanisms in which power is applied to web-roll spindle
    • B65H18/103—Reel-to-reel type web winding and unwinding mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/003—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating incorporating means for heating or cooling the liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets

Definitions

  • the present invention relates to a spreading line or plant for adhesive films.
  • spreading plants for adhesive film are laid out in various ways according to use requirements and to the nature of the adhesives and of the release agents used.
  • Figs. 1 and 2 which represent diagrammatic elevation side views of prior art plants, illustrate two of such exemplary spreading plants.
  • Fig. 1 shows a spreading line for films with a solvent-based release agent and "hot-melt” adhesive.
  • a film P supplied on reels, is unwound on the right hand-side of the line and initially goes through a station A1 where the solvent-based release agent is delivered. After the release agent has been spread on one side of the film, the film is guided towards the top part of the line, where it continues its journey inside a horizontal linear oven F.
  • the solvent-based release agent is dried to the required degree.
  • the film is guided downwards and then into the spreading station A2, where the film is coated with a thin layer of hot-melt adhesive, on the opposite side to that of the release agent.
  • the film is conditioned (cooled) and rewound on a reel in a terminal station A3.
  • Fig. 2 illustrates instead a plant for spreading an acrylic-based or water-based adhesive on a polypropylene film.
  • the adhesive which is applied at the beginning of the line, is water-based and the drying journey hence is necessarily longer (the film travelling speed being equal) than the one for the drying of a solvent-based release agent.
  • a plastic film of polypropylene P is unwound off a reel, made to pass through a station where the water-based adhesive A4 is applied, and then into a horizontal linear oven F.
  • the film P passes through a rewinding station A5 where it is rewound on a reel in the terminal station A6.
  • a plant designed exclusively for a solvent-based release agent and hot-melt adhesive such as the one shown in fig. 1, is intended to be more and more limited or to face high manufacturing and maintenance costs, due to the strict environmental requirements which must be observed during solvent treatment. Consequently, resorting to plants with a long linear oven will be more and more unavoidable in order to treat water-based substances, unless the film travelling speed is drastically reduced with detriment of its throughput.
  • the film to be coated with the adhesive does not even require prior treatment with a release agent, because it arrives already treated by the manufacturer.
  • a large part of the plant - at least all the length occupied by the oven - is substantially not used, although it occupies productive space inside the treatment premises.
  • a spreading plant comprises, in a manner known per se, a bridge-like structure 1, above which are mounted a series of oven modules 2a-2d (four in the drawings), mutually linearly adjacent.
  • oven module - which is well-visible also in fig. 3C both in its open and closed position - will not be described in further detail, since it is well-known to a skilled person in the field.
  • an unwinding and coating station 3 At the plant entrance (for example, the right-hand end in fig. 3A), an unwinding and coating station 3 is provided which also delivers water-based substances. A film P is unwound off a reel and made to pass through such station in different ways, which will be illustrated further on.
  • this station consists of an unwinding unit 3a of film reels to be treated, a calender stabilising unit 3b, and a proper spreading or coating head 3c.
  • the plant of the invention is designed to be able to treat in this front-end station at least one plastic film with a water-based substance: therefore, the length of the linear oven described above must be such as to be capable of completing the drying of this substance in a way adequate to the work speed to which it is destined.
  • At the opposite exit of the plant (the left hand-side one in fig. 3A) at least one spreading station applying the hot-melt adhesive, and one rewinding station are provided.
  • a winding device 4 - capable of rewinding a polypropylene film P, which arrives coated with water-based adhesive - and a spreading device 5 for hot-melt adhesive.
  • the plant is completed by a second rewinding station 6, arranged between the front-end station 3 and the hot-melt spreading device 5, where a winder is mounted to form a reel of film which is fully treated with release agent and hot-melt adhesive.
  • a further unwinding unit 7 is provided specifically for masking tape or for the unwinding of other films to be coupled, whose usefulness will be shown later on.
  • a reel of polypropylene plastic film can be loaded, which is treated in the stabilising station 3b and onto which a water-based adhesive is applied in the head 3c.
  • This film P is then dried in the oven 2 and finally rewound in the rewinder 4 at the opposite end of the plant.
  • a plastic film can be loaded, onto which hot-melt adhesive is to be applied.
  • a water-based or solvent-based release agent is initially applied, which is then suitably dried in the oven 2.
  • the film P after having passed onto cooling calenders 8, is deviated towards the station 5, where it is coated with adhesive. Finally, the film is rewound in the rewinder 6.

Landscapes

  • Pretreatment Of Seeds And Plants (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Silicon Compounds (AREA)
EP04101906A 2003-05-05 2004-05-04 Vorrichtung für die Beschichtung von Filmen mit Wässrigem- oder Heissschmelz-Klebstoff Withdrawn EP1475163A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20030210U 2003-05-05
ITMI20030210 ITMI20030210U1 (it) 2003-05-05 2003-05-05 Impianto di spalmatura perfezionato a doppio impiego per pellicola ade siva

Publications (1)

Publication Number Publication Date
EP1475163A1 true EP1475163A1 (de) 2004-11-10

Family

ID=32983196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04101906A Withdrawn EP1475163A1 (de) 2003-05-05 2004-05-04 Vorrichtung für die Beschichtung von Filmen mit Wässrigem- oder Heissschmelz-Klebstoff

Country Status (2)

Country Link
EP (1) EP1475163A1 (de)
IT (1) ITMI20030210U1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107537738A (zh) * 2016-06-26 2018-01-05 江阴市诚堡印刷包装机械有限公司 一种反渗透膜用二次涂布机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0324892A2 (de) * 1987-10-30 1989-07-26 NORDMECCANICA S.p.A. Vorrichtung zum Kleben von Kunststoffolien mit Klebstoffverteileinrichtungen
US4886680A (en) * 1986-02-01 1989-12-12 John Waddington Plc Coating of web materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4886680A (en) * 1986-02-01 1989-12-12 John Waddington Plc Coating of web materials
EP0324892A2 (de) * 1987-10-30 1989-07-26 NORDMECCANICA S.p.A. Vorrichtung zum Kleben von Kunststoffolien mit Klebstoffverteileinrichtungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107537738A (zh) * 2016-06-26 2018-01-05 江阴市诚堡印刷包装机械有限公司 一种反渗透膜用二次涂布机
CN107537738B (zh) * 2016-06-26 2023-09-01 江阴市诚堡印刷包装机械有限公司 一种反渗透膜用二次涂布机

Also Published As

Publication number Publication date
ITMI20030210U1 (it) 2004-11-06

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