EP2397296A2 - Procédé de fabrication d'un moule négatif pour la fabrication d'éléments en béton - Google Patents
Procédé de fabrication d'un moule négatif pour la fabrication d'éléments en béton Download PDFInfo
- Publication number
- EP2397296A2 EP2397296A2 EP11170384A EP11170384A EP2397296A2 EP 2397296 A2 EP2397296 A2 EP 2397296A2 EP 11170384 A EP11170384 A EP 11170384A EP 11170384 A EP11170384 A EP 11170384A EP 2397296 A2 EP2397296 A2 EP 2397296A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- treatment medium
- negative mold
- mold
- concrete
- producing
- 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- Withdrawn
Links
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 45
- 239000000463 material Substances 0.000 claims abstract description 28
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 21
- 239000001993 wax Substances 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 16
- 239000004033 plastic Substances 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 10
- 239000002562 thickening agent Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000004568 cement Substances 0.000 claims abstract description 7
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 6
- 239000010440 gypsum Substances 0.000 claims abstract description 6
- 239000005662 Paraffin oil Substances 0.000 claims abstract description 4
- 230000002745 absorbent Effects 0.000 claims abstract description 4
- 239000002250 absorbent Substances 0.000 claims abstract description 4
- 229920002545 silicone oil Polymers 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims description 27
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 238000011049 filling Methods 0.000 claims description 15
- 238000001723 curing Methods 0.000 claims description 10
- 235000012054 meals Nutrition 0.000 claims description 8
- 238000003848 UV Light-Curing Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 4
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims 1
- 235000019271 petrolatum Nutrition 0.000 abstract description 2
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- 229920001155 polypropylene Polymers 0.000 description 2
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- 229910000831 Steel Inorganic materials 0.000 description 1
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- 238000005299 abrasion Methods 0.000 description 1
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- 235000011837 pasties Nutrition 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 239000003381 stabilizer Substances 0.000 description 1
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- 210000004243 sweat Anatomy 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/346—Manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
Definitions
- the present invention relates to a method for producing a negative mold for the production of concrete elements, a method for producing such concrete elements and a negative mold for the production of such concrete elements.
- Concrete elements find a variety of uses in building construction and civil engineering as well as in the industrial sector. Examples include manhole elements for making a manhole, for example a manhole for maintenance and inspection of a sewerage section, or panels for wall and ceiling elements of buildings, including stairs and trim elements.
- Concrete elements are usually produced in the casting process by filling liquid concrete into a negative mold and then separating a concrete molding obtained from the hardened concrete from the mold.
- a concrete molding obtained from the hardened concrete from the mold.
- the wax used in practice facilitate the removal of the moldings in the effort to shorten the cycle time for the production of concrete elements, but it often comes to problems of adherence of the not yet fully cured concrete to sections of the negative mold, which Damage to the molding or unwanted loss of time during demoulding can lead.
- Styrofoam materials such as Styrofoam or wood are reinforced
- materials such as Styrofoam or wood are reinforced
- the desired contours can be made.
- various negative molds can be produced quickly and inexpensively for the formation of different channel structures of the shaft bottom parts.
- Styrofoam is advantageous as a particularly cost-effective material for the production of negative molds which are frequently to be changed or for the production of sections of negative molds which are used only for the production of fewer concrete elements or a single concrete element.
- the invention task is solved by a method for producing a A negative mold for producing concrete elements, the method comprising a step of treating the surface of the negative mold with a treatment medium, and wherein in the step of treating the surface, a silicone-based treatment medium is applied to the surface.
- An important feature of the first aspect of the invention is thus the treatment of a surface of the negative mold with a silicone-based treatment medium, i. a treatment medium comprising silicone as a component.
- a silicone-based treatment medium i. a treatment medium comprising silicone as a component.
- the particularly advantageous double action of such a treatment medium is attributed to the fact that the silicone component of the treatment medium acts as a filler for pores or minor irregularities of the surface of the negative mold and is self-leveling, so that a very smooth surface of the negative mold and thus also of the concrete element produced can be achieved.
- the silicone-based treatment medium is self-releasing and does not form a too strong bond either with concrete or with the materials usually used for negative forms, in particular polystyrene.
- the treatment medium of the invention particularly preferably contains silicone as the main constituent.
- the additional effect is achieved that the treatment medium on the surface of the negative mold is sufficiently stable or at least partially curing, so that when filling the negative mold, the liquid concrete can not wash away the treatment medium.
- the treatment medium is even substantially completely formed of a soleconstructive material, then Due to the high self-cohesiveness of the silicone layer, the stability of the negative mold is additionally increased, so that even smaller structures, eg when filling the concrete, are not bent or crushed.
- a treatment medium layer formed from silicone material can also be separated from the negative mold, for example as a skin, from the negative mold in order to simplify the recycling process.
- Silicone rubber for example the silicone rubbers sold under the name "Eiastosil” (registered trademark) by Wacker Chemie AG, have proven to be well adapted to the mechanical stresses and temperature conditions prevailing in the concrete casting process, as well as the mechanical properties and temperature resistance of silicone rubbers.
- the treatment medium an oil, in particular a silicone oil and / or a paraffin oil, be buried.
- the oil can then form a sliding film between the concrete and the negative mold, which further facilitates the demoulding of a shaped body.
- the oil added to the treatment medium may sweat out on solidification of the silicone component, i. accumulate as a separate film between the concrete and the solidified part of the treatment medium.
- the object of the invention is achieved by a method for producing a negative mold for the production of concrete elements, the method comprising a step of treating the surface of the negative mold with a treatment medium, wherein in the step of the treatment Surface of the negative mold, a treatment medium is applied to the surface comprising a mixture of a wax and a thickener.
- a wax-based treatment medium is thus used, wherein the viscosity of the treatment medium due to the admixture of the thickening agent is significantly greater than the viscosity of known release agents.
- the consistency of conventional release agents enabled the rapid and uniform application of the known release agents on the surface of the negative mold.
- the tougher treatment medium can still be applied relatively easily, for example by brushing, rolling up or spraying.
- by increasing the viscosity of the treatment medium flushing or damage to the treatment medium during filling of the concrete when filling the negative mold can be prevented.
- Thickened, wax-based treatment media according to the second aspect of the invention may additionally be allowed to solidify or solidify to prevent the filled concrete from flooding the treatment media when filling the negative mold.
- Solidification or acceleration of solidification can be achieved by adding a curing catalyst or by UV curing to be described later.
- the treatment medium is formed from a mixture of a wax and a thickening agent, wherein the thickening agent comprises a comminuted or pulverized solid, in particular gypsum and / or cement and / or stone meal.
- the viscosity of the treatment medium can be influenced in a simple manner and adapted to the surface properties of the negative mold. Further, by adjusting the average particle size of the comminuted or pulverized solid to the average size of pores or unevenness of the surface of the negative mold, the ability of the treatment medium to level the surface of the negative mold can be further optimized.
- Waxs are in particular synthetic, paraffin-containing waxes in question. Particularly good results can be achieved with petroleum jelly or Vaseline-like treatment media, in particular with a mixture of Vaseline and stone meal.
- the object of the invention is achieved by a method for producing a negative mold for producing concrete elements, the method comprising a step of treating the surface of the negative mold with a treatment medium, wherein in the step of treating the surface of the negative mold a treatment medium is applied to the surface comprising a crushed or pulverized solid.
- the treatment of the surface of the negative mold with a comminuted or pulverized solid also achieves the effect of significantly improving the surface smoothness and thus the quality of the surface of the finished molded article.
- an average particle size of the comminuted or pulverized solid for example by setting a specific degree of grinding, can be chosen to be appropriate in order to optimize the filling properties.
- gypsum and / or cement is used as the solid.
- these materials have the advantage that they can be obtained as standard building materials easily and inexpensively, and indeed already with a grain size which is well adapted to pores and irregularities which usually occur on the surfaces of materials used for negative molds.
- the second advantage of these materials is that these building materials must be purchased and recycled anyway in the manufacture of concrete parts or in the context of this production, so that there are synergies in terms of logistics and disposal.
- Stone meal can also be produced inexpensively with an adjusted grain size and recycled and can be mixed with a wax-based or silicone-based treatment medium applied to the negative mold.
- Particularly high-quality surfaces and good demoulding results have been achieved by the inventors in tests with mixtures of stone powder and Vasiline (waxy substance from residues in the Erdöldestilation, comprising liquid-phase and solid-phase paraffins).
- the invention according to the third aspect is advantageously combined with features of the invention according to the first aspect and / or the second aspect.
- a comminuted or powdered solid as a filler to a wax-based or silicone-based treatment medium, to adapt or improve the properties of the treatment medium for leveling or smoothing the surface of the negative mold.
- the object of the invention is achieved by a method for producing a negative mold for producing concrete elements, wherein the negative mold at least partially made of a porous, in particular foamed, plastic (eg polystyrene, EPS (polystyrene), EPP (expanded polypropylene ) or the like), and wherein the method comprises a step of surface-heating a surface portion of the negative mold formed from the plastic.
- a surface portion of the negative mold is heated.
- a heated tool For heating the surface portion of the female mold, a heated tool may be used which is brought into contact with the surface portion.
- a heated tool for example, an iron or a similar tool with a heated plate or roller is used, which has been found to be particularly suitable for leveling the surface of Strypor negative forms particularly suitable.
- the features of the fourth aspect of the invention may be advantageous with one or more features of aspects one to three are combined by applying to the plastic surface of the female mold smoothed according to the fourth aspect a silicone-based or wax-based treatment medium or / and a treatment medium comprising a comminuted or pulverized solid. In this way, the surface quality can be further increased.
- the object of the invention is achieved by a method for producing a negative mold for producing concrete elements, the method comprising a step of treating the surface of the negative mold with a treatment medium and wherein in the step of treating the surface of the negative mold a treatment medium Epoxy resin is applied to the surface.
- the epoxy resin which may, for example, be sprayed, brushed or rolled to achieve uniform distribution across the surface, forms a hard and abrasion resistant surface upon curing and drying.
- the negative mold can be fixed so that it can be reused without damage after demoulding.
- This advantage comes into play particularly when the negative mold or a part thereof is formed from an easily workable but mechanically less stable material (for example Styrofoam, EPS or EPP).
- the invention according to the fifth aspect then allows on the one hand the cost-effective and simple production of the negative mold and on the other hand a high mechanical stability and thus reusability of the negative mold.
- a further treatment medium may be applied to the surface of the negative mold, wherein the further treatment medium comprises a concrete-repellent release agent. Due to the additional release agent, the process the Entschalens of the concrete molding further facilitated and accelerated.
- the advantages of the present invention according to the first to fifth aspects come into play especially when the negative mold at least partially made of a porous and / or absorbent material, in particular of a foamed plastic (eg polystyrene, polystyrene, polypropylene ), made of wood or of a sand-containing material.
- a foamed plastic eg polystyrene, polystyrene, polypropylene
- the treatment medium used is preferably a swelling medium.
- Extinguishing media have the property of letting out a liquid even if another part of the treatment medium is in a viscous or solid phase.
- the exiting liquid can then form a liquid film on a surface of the treatment medium, which facilitates a removal of the shaped body.
- the silicone-based or wax-based treatment media according to the invention may additionally be solidified after application to the surface of the negative mold in preferred embodiments of the invention. This prevents on the one hand that the treatment medium is flushed out during the filling of the concrete, and on the other hand, the solidified treatment medium can cause a stabilization of the negative mold.
- the object of the invention is achieved by a method for producing a negative mold for producing concrete elements, the method comprising a step of treating the surface of the negative mold with a treatment medium and the method further comprising a step of solidifying the treatment medium by means of irradiation , in particular UV irradiation (irradiation with light having wavelengths in the ultraviolet range).
- irradiation in particular UV irradiation (irradiation with light having wavelengths in the ultraviolet range).
- the treatment medium may still have a relatively low viscosity, in order to allow quick and easy application, yet subsequently a reliable solidification of the treatment medium can be achieved, so that flushing of the treatment medium during the filling of the concrete prevents and stabilization of the negative mold is possible.
- the solidification can be very targeted, so that can be achieved in a short time a well metered and definable degree of solidification of the treatment medium by the irradiation with UV light of a UV light generating device.
- the irradiation in particular the UV irradiation, is preferably carried out by a device for the artificial generation of radiation, in particular by a UV light device.
- a device for the artificial generation of radiation in particular by a UV light device.
- a natural radiation source e.g., sunlight
- the hardening catalyst may be hardened by a hardening catalyst, e.g. a radical initiator may be added, which accelerates the solidification.
- a hardening catalyst e.g. a radical initiator may be added, which accelerates the solidification.
- the treatment media described above in connection with aspects 1 to 6 of the present invention are considered to be advantageous in their suitability and use for the treatment of negative molds for the production of concrete elements, so that each of the described treatment media independent protection is claimed.
- the invention thus also relates to a treatment medium of said type, e.g. a treatment medium for the treatment of a surface of a negative mold for the production of concrete elements, wherein the treatment medium is a solidifiable by irradiation, in particular UV irradiation, medium.
- the treatment medium of the invention comprises a UV-curing agent.
- the objective of the invention is achieved by a method for producing concrete elements, the method comprising the steps of: providing a negative mold by a method according to any of the above-described aspects one to six of the present invention, filling concrete in the Neagtivform and separating a concrete element molded body obtained from the concrete of the mold.
- high surface quality concrete element moldings can be manufactured with cost efficient process steps.
- the present invention provides a negative mold made according to a method according to one or more of aspects one to six.
- a negative mold for which independent protection is claimed, is simple and inexpensive to produce, produces concrete moldings with good surface quality and allows easy removal of the concrete moldings.
- FIG. 1 shown mold construction 10 for the production of shaft bottom parts 12 made of concrete by casting includes a mold shell 14, an inner negative mold 16 and Aussparkerne 18, which are to be arranged to form the inlets and outlets of the shaft bottom part between the inner mold 16 and the mold shell 14.
- a shaft bottom portion 12 is formed in the cavity formed between the mold shell 14 and the inner female mold 16 and the recess cores 18, respectively.
- the molding shell 14 may comprise a cylindrical wall 18 and stand on a base plate 20, on which also the inner negative mold 16 stands.
- the inner female mold 16 may be composed of a mold core 22 standing on the base plate 20 and a channel mold section 24 placed on the mold core 22, wherein the mold core 22 may form an inner wall, in particular a cylindrical inner wall, of the shaft bottom 12 and the channel mold section 24 may comprise a bottom section including one Channel structure for connecting the inlets and outlets of the shaft bottom part 12 can form.
- FIGS. 2 to 4 An exemplary embodiment of a method for producing a negative mold for producing concrete manhole elements, in which the channel forming section 24 of FIG. 1 illustrated mold construction 10 is manufactured as an example of a negative mold.
- the channel mold section 24 of the exemplary embodiment is produced from an approximately cylindrical block-shaped Styrofoam green body (not shown) by a shaping material processing.
- the Styrofoam green body can be poured or foamed, for example, in an appropriate form.
- the outer contour of the channel molding section 24 is prepared according to a later to be cast channel structure.
- a main clot portion 28 of the channel forming section 24 for forming a Hauptgerinneasts the later shaft bottom part and a Crowgerinneabêt 30 for forming a Maugerinneasts the later shaft bottom part is worked out integrally from the green body.
- the processing of the channel molding section 24 to the desired desired geometry can be done by means of a milling tool 26.
- the milling tool 26 may be manually guided or part of an automatic or semi-automatic milling device.
- Particularly preferred is a fully computer-aided production of the outer contour of the channel mold section 24 into consideration, in which the desired channel structure is created in a product configurator as a virtual model, for example by means of a CAD-CAM system, and the data of the model then to a control device for the milling tool 26th are passed, which then drives the milling tool 26, for example by means of a robot arm, for shaping processing and mills the Gerinneformabêt 24 according to the model created in the computer.
- a treatment medium 32 is applied to the surface of the channel molding section 24.
- a silicone-based treatment medium is applied, to which an oil, in particular a silicone oil or / and a paraffin oil, and a UV-curing agent are added.
- the application of the treatment medium and the distribution of the treatment medium over the surface of the channel molding section 24 can be effected by a roller 34, which is suitable for both liquid and pasty treatment media.
- a coating tool can be used to apply or distribute the treatment medium.
- the spraying of the treatment medium has proven to be a very fast and efficient variant, which also achieves a good even distribution of the treatment medium over the surface of the channel molding section 24.
- substantially all of the surface in contact with the surface of the channel molding section 24 is wetted with the treatment medium 32, more preferably uniformly wetted.
- a UV light assembly 36 is brought into the vicinity of the channel molding section 24 and directed to the surface carrying the treatment medium 32.
- the radiation characteristic of the UV light arrangement 36 can be set up to irradiate the substantially entire surface of the channel molding section 24.
- the channel mold section 24 is placed on the mandrel 22.
- a lock between the channel mold section 24 and mandrel 22 can prevent slippage of the channel mold section 24 during the filling of the concrete.
- one or more recess cores 18 may be attached to the channel forming section 24 and suitably locked.
- liquid concrete can be filled into the open upper side of the mold jacket 14, which is distributed in the intermediate space between the mold jacket 14, inner female mold 16 and the recess cores 18.
- an oil exuding from the treatment medium may form an oil film between the channel mold section 24 and the filled concrete.
- the concrete remains in the mold construction 10 until a predetermined degree of hardness of the concrete is reached, which allows the shaft bottom part 12 to be removed, for example until a predetermined curing time has elapsed. Subsequently, for demoulding the shaft bottom part 12, for example, the mold construction 10 is opened.
- the Aussparkerne 18 and the inner negative mold 16, including the Gerinneformabites 24, are removed.
- the treatment medium according to the invention By coating the channel molding section 24 with the treatment medium according to the invention, deliming of the channel molding section 24 is facilitated.
- the resulting oil film can act as a release agent and make de-scaling even easier.
- other parts of the mold construction 10, in particular the inner wall of the mold shell 14th and the outer wall of the mandrel 22, before filling the concrete with a release agent or with a treatment medium according to the invention are treated to simplify the de-peeling.
- the recess cores 18, which are preferably also made of Styrofoam, should also be coated in the manner described above with a treatment medium according to the invention in order to take advantage of an improved surface and easier Entschalens for Aussparkernen 18.
- the shaft bottom part 12 obtained after demoulding according to the exemplary embodiment of the invention has a very good surface quality on the surface sections which have come into contact with the treatment medium 32, since the treatment medium 32 has leveled any asperities and pores of the mold construction 10.
- the inner wall of the mold shell 14, made of a material with high surface quality, such as metal are all surface portions of the shaft bottom part 12 of high quality and the shaft bottom part 12 can be very easily dismissed altogether, since it does not adhere to any element of the mold construction 10.
- the method of the embodiment thus achieves an increase in quality and efficiency.
- a wax-based treatment medium 32 in particular a Vasiline, which may be added to a stone meal as a filler.
- a treatment medium 32 may be self-curing, ie at least to the extent that it does not cure without UV light or other additional technical means, that it does not interfere with the filling of the concrete into the mold construction 10 is washed out.
- a mixture of a wax and a thickening agent in particular without additional curing, can be used as the treatment medium 32, wherein such a treatment medium with increased viscosity on the one hand can still be applied well to the surface and distributed there, and on the other hand flushing out can be prevented during filling of the concrete.
- a treatment medium 32 can also be a comminuted or pulverized solid, in particular gypsum and / or cement and / or stone meal are used.
- cement may be diverted from the production of the concrete mixture and used to treat the surface of the channel molding section 24 in order to improve the surface quality of the channel molding section 24.
- a layer of a treatment medium based on epoxy resin could be applied to the surface of the channel molding section 24. After curing of the epoxy resin not only creates a smooth surface but the channel mold section 24 is additionally fixed and mechanically stabilized so that it is particularly suitable for reuse.
- the Epoxy resin layer can be applied to facilitate the Entschalens a known per se, concrete-repellent release agent or a treatment medium of the type according to the invention.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010030241A DE102010030241A1 (de) | 2010-06-17 | 2010-06-17 | Verfahren zur Herstellung einer Negativform zur Herstellung von Betonelementen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2397296A2 true EP2397296A2 (fr) | 2011-12-21 |
| EP2397296A3 EP2397296A3 (fr) | 2014-07-16 |
Family
ID=44712940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP11170384.9A Withdrawn EP2397296A3 (fr) | 2010-06-17 | 2011-06-17 | Procédé de fabrication d'un moule négatif pour la fabrication d'éléments en béton |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2397296A3 (fr) |
| DE (1) | DE102010030241A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10195763B2 (en) * | 2013-04-12 | 2019-02-05 | Bfs Betonfertigteilesysteme Gmbh | Method and device for manufacturing a canal component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2641898A1 (de) * | 1975-09-18 | 1977-03-24 | Daikin Ind Ltd | Formentrennmittel |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH92355A (de) * | 1921-04-05 | 1922-05-16 | Siegwart Hans | Kernmodell für die Herstellung von Zementröhren. |
| BE519275A (fr) * | 1952-04-19 | |||
| DE2328337C3 (de) * | 1973-06-04 | 1978-01-19 | Wacker Chemie Gmbh | Verfahren zum herstellen von formkoerpern und ueberzuegen aus baustoffen auf grundlage von anorganischen bindemitteln |
| US4538787A (en) * | 1983-04-25 | 1985-09-03 | Fox Richard B | Rigid-foam plastic mold and method of preparation |
| DD247629A1 (de) * | 1986-03-26 | 1987-07-15 | Werkzeugmasch Forschzent | Trennmittelsystem |
| EP0527286A1 (fr) * | 1991-08-13 | 1993-02-17 | Goyo Paper Working Co. Ltd. | Lubrifiant |
| JP4067168B2 (ja) * | 1998-04-03 | 2008-03-26 | 旭化成建材株式会社 | 模様付き軽量気泡コンクリートパネルの製造方法 |
| JP2004195716A (ja) * | 2002-12-17 | 2004-07-15 | New Japan Chem Co Ltd | 光硬化型コンクリート離型性塗料 |
| WO2004091877A1 (fr) * | 2003-04-15 | 2004-10-28 | Schluesselbauer Johann | Procede pour realiser le fond d'un puits |
| DE10317321B4 (de) * | 2003-04-15 | 2008-06-26 | SCHLÜSSELBAUER, Johann | Verfahren und Vorrichtung zur Herstellung von Schachtunterteilen aus Beton |
| DE102004007389A1 (de) * | 2004-02-11 | 2005-09-15 | Ab-Polymerchemie Gmbh | Verfahren zum Herstellen eines Formteils aus Beton und/oder Mörtel mit einem zumindest bereichsweisen Oberflächenschutz und Verwendung desselben |
| EP1733857B1 (fr) * | 2005-06-14 | 2012-03-28 | Creabeton Matériaux SA | Procédé et appareil pour la fabrication de pièces comportant au moins une partie creuse à partir d'un liant hydraulique |
| DE102005032323B3 (de) * | 2005-07-08 | 2007-02-01 | P.V. Betonfertigteilwerke Gmbh | Verfahren zur Herstellung eines Schachtunterteils |
| DE102007015270B4 (de) * | 2007-01-09 | 2014-09-18 | P.V. Betonfertigteilwerke Gmbh | Verfahren zur Herstellung eines Schachtunterteils |
| DE202009017953U1 (de) * | 2009-10-27 | 2010-10-14 | Bfs Betonfertigteilesysteme Gmbh | Vorrichtung zur Herstellung einer Form für die Fertigung von Schachtbodenstücken und Vorrichtung zur Herstellung von Schachtbodenstücken |
-
2010
- 2010-06-17 DE DE102010030241A patent/DE102010030241A1/de not_active Withdrawn
-
2011
- 2011-06-17 EP EP11170384.9A patent/EP2397296A3/fr not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2641898A1 (de) * | 1975-09-18 | 1977-03-24 | Daikin Ind Ltd | Formentrennmittel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10195763B2 (en) * | 2013-04-12 | 2019-02-05 | Bfs Betonfertigteilesysteme Gmbh | Method and device for manufacturing a canal component |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2397296A3 (fr) | 2014-07-16 |
| DE102010030241A1 (de) | 2011-12-22 |
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