EP2138652A2 - Système de séparation pour plaques de coffrage - Google Patents

Système de séparation pour plaques de coffrage Download PDF

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Publication number
EP2138652A2
EP2138652A2 EP09160222A EP09160222A EP2138652A2 EP 2138652 A2 EP2138652 A2 EP 2138652A2 EP 09160222 A EP09160222 A EP 09160222A EP 09160222 A EP09160222 A EP 09160222A EP 2138652 A2 EP2138652 A2 EP 2138652A2
Authority
EP
European Patent Office
Prior art keywords
concrete
layer
plastic film
film
contact
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.)
Pending
Application number
EP09160222A
Other languages
German (de)
English (en)
Other versions
EP2138652A3 (fr
Inventor
Martin Carl Derin
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.)
Derin Holzapfel and Co Grundbesitz und Beteiligungs KG
Original Assignee
Derin Holzapfel and Co Grundbesitz und Beteiligungs KG
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 Derin Holzapfel and Co Grundbesitz und Beteiligungs KG filed Critical Derin Holzapfel and Co Grundbesitz und Beteiligungs KG
Publication of EP2138652A2 publication Critical patent/EP2138652A2/fr
Publication of EP2138652A3 publication Critical patent/EP2138652A3/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G19/00—Auxiliary treatment of forms, e.g. dismantling; Cleaning devices

Definitions

  • the invention relates to a concrete formwork slab separation system, and more particularly relates to a slab for a concrete formwork slab, a concrete formwork system and a concrete formwork separation system package.
  • oil is used as a release agent
  • melanin resin impregnated paper webs are applied to the formwork panels (wood panels). While the release effect of the oil is sometimes not sufficient or poorly oiled areas are difficult to separate, the wood shuttering panels are destroyed when attaching the release paper, because this paper is chugged on the wood and clamped there.
  • a release liner according to the invention for a concrete formwork panel has a plastic film which can be adhered to the formwork panel.
  • the present invention thus turns into a release agent that, although inexpensive to manufacture but reusable and according to the current state of polymer technology any desired property can be provided.
  • Plastic films can be readily fabricated or processed to either self-adhesive (by surface texturing or choice of material) or to be readily provided with a material which will then provide such adhesion.
  • plastic films adhered according to the invention ensure optimum separation, on the other hand adhesion methods can be used which do not destroy the shuttering panels.
  • Plastic material allows for a wide variety of attachment techniques.
  • the plastic film may comprise any suitable plastic material; in particular, it is a polyurethane or polypropylene film, which allows a cost-effective production.
  • the release pad has an adhesion-promoting nonwoven layer, which is provided for the arrangement between the plastic film and the plate and which is arranged in particular as non-woven back on the plastic film.
  • the adhesion promoting nonwoven layer may be a polypropylene nonwoven layer, in particular a needle punched nonwoven, and it is possible to laminate it onto the plastic film.
  • Such a fleece back provides a better connection between the formwork panels and the film.
  • a bonding agent adheresive
  • that agent may "claw" into the nonwoven backing, i. penetrate into it and thus strengthen the bond or firmly designed.
  • the separation pad has a concrete-contact fleece layer or felt layer which is provided for the arrangement between the plastic film and the concrete to be shuttered.
  • This concrete contact nonwoven layer or felt layer (the term "nonwoven” is usually used here, but a felt can also be used for each nonwoven mentioned) may be a polypropylene layer or a polyester layer, and also it is preferably adherable, in particular adherable to the Plastic film provided.
  • the concrete contact fleece layer is therefore preferably to be designed so that it easily the plastic layer can be adhered, in particular by choice of material or machining. In the usual case, the concrete contact nonwoven layer will be thicker than the adhesion promoting nonwoven layer located on the other side of the plastic film.
  • the concrete-contact non-woven layer will have a thickness which corresponds to a multiple of the thickness of the adhesion-promoting nonwoven layer.
  • the thin adhesion supporting nonwoven layer ensures that the entire release liner does not become too thick, while the relatively thick concrete contact nonwoven layer has good drainage and slag uptake capabilities.
  • the concrete formwork system comprises a formwork panel and a separation pad, as has been described above in various embodiments.
  • the plastic film is non-destructively adhered to the plate and sheet and, in this sense, the term "stick” or "stick” is to be understood to mean specific embodiments of the present invention.
  • the concrete contact nonwoven layer is non-destructively adhered to the film for film and nonwoven, and if a bonding is selected for the adhesion process, this may also be a special Sprühverklebung, eg with spray adhesives based on isohexane (acetone) solvent.
  • a bonding is selected for the adhesion process
  • this may also be a special Sprühverklebung, eg with spray adhesives based on isohexane (acetone) solvent.
  • the selection of a releasable (non-hardening) bond is advantageous, because in such cases, the concrete contact fleece can also be loosened and replaced when the plastic film is reused.
  • the choice of material can be made so that the bond and / or the concrete contact nonwoven layer are resistant to alkali, but the concrete contact nonwoven layer after use (curing) can be removed substantially without residue.
  • the concrete would thus be dewatered or detoxified during curing on the concrete contact nonwoven layer, and the
  • the concrete-contact fleece layer should therefore not dissolve when alkali, and further the adhesive bond with the plastic film should be designed so that the concrete contact fleece when filling concrete into the formwork and during curing of the concrete throws no wrinkles, which later on sign off the surface of the concrete.
  • the edges of the shuttering panels can be protected, for example by acrylate or polyurethane paint.
  • the present invention further relates to a concrete formwork separation system package (set, set, kit) having a release liner and a concrete-contact nonwoven layer, as described in more detail above in various embodiments.
  • the package also comprises one or more adhesives, in particular a rapid adhesive or rapidly applied adhesive and especially a spray adhesive for the connection of shuttering board, plastic film and concrete contact fleece layer.
  • adhesives in particular a rapid adhesive or rapidly applied adhesive and especially a spray adhesive for the connection of shuttering board, plastic film and concrete contact fleece layer.
  • spray adhesions are mentioned herein, this term is used by way of example only; Putty or heat / pressure bonds can also be used.
  • the adhesive used between the film and the concrete formwork board is advantageously free of aromatics and / or permanently and firmly bonds these two parts. In such a case, a possibly destroyed film is removed by shaving off after use.
  • the Betonschalungsplatte here a wooden plate, has been provided with the reference numeral 1.
  • a separation pad is to be mounted, because there is the side of the plate 1, with which the concrete is shown, which is shown only schematically by the reference numeral 7.
  • this separation pad has basically three main layers, namely the plastic film 4, the thin fleece back 3 (adhesion supporting fleece) and the concrete contact fleece 6 as outermost layer to the concrete 7 out.
  • the nonwoven layer 6 is adhered to the film 4, and this is indicated by the adhesive layer, which has been provided with the reference numeral 5.
  • This adhesive layer may be a layer of a conventional spray adhesive that provides a releasable connection. In case of loading concrete will press vertically against the plastic film 4 on the plate 1, and therefore a shear strength of this adhesive layer 5 or not of utmost importance. Layer 6 should not be chipped or nailed.
  • the separation system according to the invention is reusable in large parts, in particular as regards the plastic film 4.
  • the fleece 6 can be released again after an application and is advantageously alkali-resistant. It serves as a water drainage layer, but also absorbs the slag, which arises when reacting the concrete. Before the next application, a further nonwoven web material can then be applied or glued onto the plastic film 4 if the nonwoven already used has been stripped off largely without residue.
  • the plastic film used in the invention protects the formwork panels longer than, for example, conventional melanin resin impregnated paper and thus extends their life significantly.
  • the edges of the shuttering panels can be protected, for example, by acrylate varnish or polyurethane varnish.
  • Polypropylene can be used as a material for the film as well as for each or both nonwoven parts, making production cost-effective.
  • other materials are also usable, for example polyester materials.
  • the concrete contact fleece As far as the concrete contact fleece is concerned, its surface may also be specially designed as required, for example, it may be designed to be rough on the contact surface with the concrete and relatively smooth on the film adhesive side in order to optimize absorption capacity and adhesion.
  • the entire package of the invention which is glued to a formwork panel and the concrete contact fleece or felt layer has on the protective film, is designed to be temperature resistant up to 160 ° C.
  • the protective film itself is preferably carried out free of aromatics and is largely discolored on contact with reacting liquid concrete and resistant to UV radiation.
  • the protective film can be mounted on both wood shuttering panels and on plastic shuttering panels. Different system adhesives would be used, while the adhesive for the nonwoven or felt layer on the concrete contact side would be the same in both cases.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP09160222A 2008-06-27 2009-05-14 Système de séparation pour plaques de coffrage Pending EP2138652A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200820008663 DE202008008663U1 (de) 2008-06-27 2008-06-27 Betonschalungsplatten-Trennsystem

Publications (2)

Publication Number Publication Date
EP2138652A2 true EP2138652A2 (fr) 2009-12-30
EP2138652A3 EP2138652A3 (fr) 2011-01-12

Family

ID=39917758

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09160222A Pending EP2138652A3 (fr) 2008-06-27 2009-05-14 Système de séparation pour plaques de coffrage

Country Status (2)

Country Link
EP (1) EP2138652A3 (fr)
DE (1) DE202008008663U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023112230A1 (de) 2023-05-10 2024-11-14 Reckli Gmbh Matrize zur Strukturierung von Bauwerksflächen

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013009412A1 (de) * 2013-06-05 2014-12-11 Johannes Christian Thome Verfahren zur Erstellung von Betonoberflächen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0552036A (ja) * 1991-08-23 1993-03-02 Dainippon Printing Co Ltd コンクリート打設用型枠、型枠用シートおよびコンクリートの打設方法
JP2867871B2 (ja) * 1994-04-05 1999-03-10 株式会社大林組 コンクリート打設用型枠及び型枠貼付用シート
DE19812517C2 (de) * 1998-03-21 2000-06-21 Johns Manville Int Inc Betonschalung zur Herstellung von Betonartikeln
ATA43799A (de) * 1999-03-12 2002-08-15 Polyfelt Gmbh Betonschalung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023112230A1 (de) 2023-05-10 2024-11-14 Reckli Gmbh Matrize zur Strukturierung von Bauwerksflächen

Also Published As

Publication number Publication date
DE202008008663U1 (de) 2008-10-30
EP2138652A3 (fr) 2011-01-12

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