WO2018172094A1 - Autoclavage avec un sac à vide - Google Patents

Autoclavage avec un sac à vide Download PDF

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Publication number
WO2018172094A1
WO2018172094A1 PCT/EP2018/055779 EP2018055779W WO2018172094A1 WO 2018172094 A1 WO2018172094 A1 WO 2018172094A1 EP 2018055779 W EP2018055779 W EP 2018055779W WO 2018172094 A1 WO2018172094 A1 WO 2018172094A1
Authority
WO
WIPO (PCT)
Prior art keywords
vacuum bag
assembly
temperature
polymer film
autoclave
Prior art date
Application number
PCT/EP2018/055779
Other languages
German (de)
English (en)
Inventor
Stephan GIER
Richard BROCKER
Stefan Lücke
Ingo Von Der Weiden
Uwe Van Der Meulen
Original Assignee
Saint-Gobain Glass France
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 Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Priority to CN201880000730.8A priority Critical patent/CN108966646A/zh
Publication of WO2018172094A1 publication Critical patent/WO2018172094A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10871—Making laminated safety glass or glazing; Apparatus therefor by pressing in combination with particular heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10082—Properties of the bulk of a glass sheet
    • B32B17/10119—Properties of the bulk of a glass sheet having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
    • B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
    • B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
    • B32B17/10844—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid
    • B32B17/10853—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid the membrane being bag-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
    • B32B17/10972—Degassing during the lamination
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2419/00—Buildings or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/12—Ships
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft

Definitions

  • the present invention relates to a method for producing a laminated glass pane, the laminated glass pane obtainable by this manufacturing method, and the use of the laminated glass pane thus produced.
  • a first step usually involves arranging and optionally fixing a base disk, at least one polymer film on the base disk and a cover disk on the polymer film or vice versa. This arrangement is transferred in a further process step in a vacuum bag and heated therein under vacuum in an oven. After heating, the assembly is removed from the vacuum bag and cooled. After cooling, the assembly is then autoclaved in a final process step in an autoclave at high temperature and pressure to obtain the finished laminated glass sheet.
  • EP 2 647 497 A1 discloses a method for producing a laminated glass pane, wherein an arrangement of a base plate and a cover plate with several intermediate polymer films was first pre-evacuated in a vacuum bag, then heated in an oven and then cooled, then in an autoclave to be autoclaved.
  • the object of the present invention is to overcome the above-mentioned disadvantages of the prior art.
  • the object of the present invention is to provide a method for producing a laminated glass pane, by which energy and / or working time can be saved over the known methods.
  • the method should also be designed as simple as possible.
  • the energy and / or working time-saving process the production of curved laminated glass without these are exposed to an uneven pressure distribution during autoclaving.
  • a method for producing a laminated glass pane which comprises the following steps: a) arranging at least one polymer film on a base disk and from a cover disk on the at least one polymer film or arranging at least one polymer film on a cover disk and from a base disk to the at least one polymer film; b) placing the assembly obtained in step a) in a vacuum bag; c) evacuating the vacuum bag and heat treating the assembly in the evacuated vacuum bag in an autoclave at a temperature in the range of 60 ° C to 120 ° C; d) stopping the vacuum after the heat treatment in step c) and autoclaving the assembly in the vacuum bag in the autoclave at a temperature equal to or greater than the temperature of the heat treatment in step c).
  • the method comprises arranging at least one polymer film on a base disk and from a cover disk onto the at least one polymer film or arranging at least one polymer film on a cover disk and from a base disk onto the at least one polymer film, one arrangement each being obtained in which the at least one polymer film is located between the base disk and the cover disk.
  • the order of placement is generally arbitrary, in practice the at least one polymer film is often placed on the cover sheet and then the base sheet placed thereon, especially when the cover sheet is a chemically tempered thin glass sheet.
  • the base plate and / or cover plate glass and / or polymers preferably flat glass, quartz glass, borosilicate glass, soda-lime glass, Alkalialuminosilikatglas, polycarbonate and / or polymethacrylate.
  • the cover disk and the base disk may be made of the same material or of different material.
  • the laminated glass pane may be symmetrical, i. H. the base disk and the cover disk have the same thickness.
  • the laminated glass panes are preferably an asymmetrical laminated glass pane, which means that the cover pane has a smaller thickness than the base pane or vice versa.
  • the base disk and the cover disk each have a thickness in the range of 0.4 to 20 mm, preferably 0.4 to 6 mm.
  • the base and / or cover plate is a chemically tempered thin glass pane, preferably made of alkali aluminosilicate glass.
  • the cover plate is a chemically tempered thin glass pane, preferably made of alkali aluminosilicate glass.
  • the chemically tempered thin glass pane preferably made of alkali aluminosilicate glass, preferably has a thickness of not more than 1 mm, preferably, the chemically tempered thin glass pane has a thickness in the range of 0.4 to 1 mm, particularly preferably in the range of 0.5 to 0.8 mm.
  • the base plate soda-lime glass and the cover plate is a chemically tempered thin glass of alkali aluminosilicate glass.
  • the base disk, z. Example from soda-lime glass, a thickness in the range of 0.5 to 20 mm, preferably 1 to 6 mm, and the cover plate is a chemically tempered thin glass plate with a thickness in the range of 0.4 to 1 mm, preferably 0.5 to 0.8 mm.
  • the base plate is usually the disc, which represents the outer glass, while the cover plate is the inner glass.
  • the base disk and the cover disk can each be flat or curved or arched.
  • flat or curved laminated glass panes can be produced.
  • Such curved laminated glass panes are also known to those skilled in the art as 3D composite glass panes. Accordingly, non-domed, flat laminated glass panes are referred to as 2D laminated glass panes.
  • the domed base and cover plates can according to the known methods, for. B. press bending or gravity bending (gravity bending) are produced.
  • the domed shrouds and shrouds are made by press bending, ie, heating the glass to the softening temperature followed by "in-mold,” or by gravity bending, ie, heating the glass to the softening temperature, the subsequent bending being via gravity ,
  • both the base disk and the cover disk are each curved glass panes in order to produce a curved laminated glass pane.
  • the inventive method is thus particularly suitable for producing a curved laminated glass pane.
  • One or more polymer films can be arranged between the base disk and the cover disk.
  • the polymer of the at least one polymer film preferably comprises polyvinyl butyral, ethylene vinyl acetate, polyurethane and / or mixtures thereof and / or copolymers thereof, wherein the at least one polymer film is preferably a polyvinyl butyral film.
  • the at least one polymer film preferably has a thickness of from 0.1 to 1.5 mm and more preferably from 0.3 to 0.9 mm.
  • the at least one polymer film may also be preformed.
  • This preforming can according to the known methods, for. B. by deep drawing done.
  • a further preferred embodiment is the use of three films in which an additional polymer film between them is arranged between two polymer films as defined above, preferably polyvinyl butyral films.
  • the additional polymer film may, for. B. be selected from films of polyethylene terephthalate, polyethylene, polypropylene, polycarbonate, polybutylene terephthalate and / or mixtures and / or copolymers thereof, wherein a polyethylene terephthalate is preferred.
  • the additional polymer film may, for. B. a thickness in the range of 20 to 100 ⁇ , preferably 40 to 60 ⁇ have.
  • the assembly formed in step a) may optionally be prefixed prior to placement in the vacuum bag, e.g. B. by selective heating. Preference is given to a selective heating to a temperature in the range of 60 ° C to 90 ° C. Under point heating is understood here that the arrangement is heated at several points, for. B. to a temperature in the range of 60 ° C to 90 ° C.
  • the surfaces, which are each heated preferably have a diameter of 2 cm to 5 cm.
  • the arrangement can also be prefixed in other ways, for. B. with an adhesive tape.
  • the prefixing has the advantage that the different layers of the laminated glass pane can not move against each other until their final bonding.
  • step a After the arrangement has been formed in step a), this arrangement is placed in a vacuum bag in step b) of the method according to the invention.
  • Suitable vacuum bags are known to those skilled in the art. It is preferred that the vacuum bag is a rubber or rubber vacuum bag into which preferably a metal mesh is incorporated, whereby stabilization of the vacuum bag is achieved.
  • the metal mesh allows the sidewalls of the vacuum bag to be shaped to a desired shape.
  • suitable vacuum bags have a wall thickness of about 5 mm to about 10 mm.
  • the shape of the vacuum bag is adapted to the shape of the assembly.
  • a vacuum bag with flat side surfaces is suitable for this purpose.
  • the vacuum bag has at least one, preferably two curved side surfaces, the use of a vacuum bag with flat side surfaces is also possible with curved base and cover disks.
  • the shaping of a curved side surface of the vacuum bag is made possible in particular by an incorporated metal fabric.
  • the vacuum bag When using a vacuum bag adapted to the shape of the assembly, the vacuum bag may have a similar one after placing the assembly therein assume three-dimensional shape as the arrangement.
  • This has the advantage that during the autoclaving of a curved arrangement in the vacuum bag a uniform pressure distribution is ensured on the curved glass sheets and thus damage to the glass or unwanted edge effects can be largely avoided by a different pressure distribution on the glass.
  • An uneven pressure distribution can also result in the heat treatment in step c), but plays there, especially because of the lower temperatures, a minor role.
  • the following treatment in the autoclave in steps c) and d) can be carried out on an arrangement located in the vacuum bag. However, it is also possible to simultaneously treat two or more arrangements located in the vacuum bag in the autoclave according to steps c) and d).
  • step c) of the method according to the invention the vacuum bag with the arrangement of base disk and cover disk is evacuated with the intervening at least one polymer film which was formed in step a) of the method according to the invention.
  • the vacuum bag with the arrangement formed in step a) of the method according to the invention is preferably placed in an autoclave prior to evacuation and connected there to a vacuum system.
  • embodiments of the method according to the invention are also possible in which the vacuum bag with the arrangement contained therein is evacuated even before placing it in the autoclave, which however is not preferred for practical reasons.
  • the vacuum bag with the arrangement therein into an autoclave rack, wherein a vacuum can be passed through the autoclave rack.
  • the vacuum bag with the inside Arrangement can be connected to the autoclave rack.
  • the autoclave rack can then be connected in the autoclave to a vacuum pump. In this way, the vacuum can be applied via the frame to the vacuum bag for evacuation.
  • the vacuum bag with the assembly therein can be attached to the already in the autoclave autoclave rack or outside the autoclave attached to the autoclave rack and then transported together with the rack in the autoclave.
  • the vacuum system used for evacuation usually comprises at least one vacuum pump, with which the vacuum can be generated and maintained.
  • this vacuum is actively maintained, d. H. the vacuum pump remains in operation during the heat treatment of the evacuated vacuum bag with the assembly therein.
  • the vacuum pump maintain a substantially constant pressure or a substantially constant vacuum over the entire duration of process step c).
  • vacuum is intended to be synonymous with terms such as "reduced pressure” or “reduced pressure.” All pressures given in the application refer to absolute pressure unless otherwise specified.
  • the assembly located in the evacuated vacuum bag is in step c) in the autoclave at a temperature in the range of 60 ° C to 120 ° C, preferably at a temperature in the range of 70 ° C to 110 ° C, particularly preferably of 80 ° C. up to 95 ° C, heat treated. This is also called warm evacuation or "hot deairing".
  • the holding time at the desired temperature for the heat treatment in the autoclave is preferably at least 5 minutes, more preferably at least 10 minutes.
  • the holding time is preferably not more than 60 minutes.
  • the holding time at the desired temperature for the heat treatment in the autoclave is preferably 5 minutes to 50 minutes and most preferably 25 minutes to 45 minutes.
  • an embodiment is expedient and preferred in which a so-called cold evacuation takes place in step c) after evacuation of the vacuum bag containing the arrangement and before warm evacuation, as described above, in which the arrangement located in the vacuum bag over a certain period of time, z.
  • a so-called cold evacuation takes place in step c) after evacuation of the vacuum bag containing the arrangement and before warm evacuation, as described above, in which the arrangement located in the vacuum bag over a certain period of time, z.
  • ambient temperature is meant in particular a temperature in the range of about 15 ° C to about 35 ° C.
  • This holding of the vacuum at ambient temperature (also referred to as “cold-deairing”) has the advantage that air, which is located between the base and cover plate or between the at least one polymer film and the discs, can escape better, and therefore usually done.
  • next method step d is the stopping of the vacuum after the Heat treatment in step c) and autoclaving the assembly in the vacuum bag in the autoclave at a temperature equal to or greater than the temperature of the heat treatment in step c).
  • the temperature for autoclaving the assembly in the autoclave in the vacuum bag is preferably greater than the temperature of the heat treatment in step c), wherein the temperature for autoclaving is preferably at least 10 ° C., preferably at least 20 ° C., preferably at least 30 ° C, is greater than the temperature of the heat treatment in step c).
  • the arrangement located in the vacuum bag is preferably autoclaved in step d) at a temperature in the range from 80 to 150 ° C, preferably from 90 ° C to 145 ° C. It is autoclaved at an absolute pressure of 7 bar to 16 bar, preferably from 8 bar to 14 bar, more preferably 10 bar to 13 bar.
  • the assembly in the vacuum bag in step d) is exposed for 10 minutes to 120 minutes, especially for 30 minutes to 60 minutes, the maximum temperature and maximum pressure intended for autoclaving.
  • a main advantage of the method according to the invention is that the autoclaving in step d) can be carried out directly on the heat treatment of the evacuated vacuum bag assembly in step c), without the time-consuming and labor-intensive steps of removing the assembly required by the conventional method from a separate oven, the removal of the assembly from the vacuum bag, and finally the placement of the assembly in an autoclave are required. It was surprisingly found that the autoclaving of Arrangement is also possible if it is still in the vacuum bag.
  • the treatment after the heat treatment in step c) in the autoclave immediately after the vacuum has been stopped is simply continued by increasing the temperature and pressure in the autoclave to the values desired for autoclaving so that no cooling of the assembly takes place between the heat treatment in step c) and the subsequent autoclaving is required.
  • the temperature of the arrangement preferably being one after the heat treatment in step c) and before autoclaving in step d) Temperature which is at most 10 ° C, more preferably at most 5 ° C, more preferably at most 2 ° C lower than the temperature in the heat treatment in step c), not below. It is very particularly preferred if there is no cooling of the arrangement between the heat treatment in step c) and the autoclaving in step d).
  • the temperature of the assembly after the heat treatment in step c) and before the autoclaving in step d) does not fall below a temperature of 60 ° C, preferably temperature of 70 ° C and more preferably temperature of 80 ° C.
  • the assembly After autoclaving, the assembly can be cooled and removed from the vacuum bag to obtain the finished laminated glass.
  • the arrangement in the vacuum bag in the autoclave becomes active is cooled to a temperature in the range of about 40 ° C to about 60 ° C, before the pressure is released from the autoclave.
  • the assembly is then set in the vacuum bag to ambient temperature, e.g. B. 20 ° C, cooled. Then the finished laminated glass pane can be removed from the vacuum bag.
  • ambient temperature e.g. B. 20 ° C
  • the heat treatment in process step c) and the autoclaving in step d) are carried out in the same autoclave.
  • This has, in addition to the energy saving described above, the advantage that the transfer of the assembly from the furnace to the hot evacuation with cooling and the further transfer of the cooled assembly into the autoclave can be avoided, whereby the process is less complex and labor time and an additional furnace can be saved can.
  • a single laminated glass pane can be produced by the method according to the invention, but it is also possible to produce a plurality of laminated glass panes in an autoclave in parallel and also makes more sense in practice.
  • the invention also relates to a laminated glass pane obtainable by the method described above.
  • the invention relates to the use of a composite glass pane produced by the method described above as a vehicle windshield, ship's window or aircraft windscreen, as architectural glazing, architectural glazing or furniture glazing.
  • Figure 1 is a schematic view of the arrangement according to the inventive method according to step a).
  • Figure 2a is a schematic view of a curved arrangement of the base plate and cover plate with an intermediate polymer film in a planar vacuum bag.
  • the arrows show the pressure conditions during the autoclaving process.
  • FIG. 2b shows a schematic view of a curved arrangement of base disk and cover disk with an intervening polymer film in a preferred vacuum bag, which has two side surfaces with a similar curvature as the arched arrangement.
  • the arrows show the pressure conditions during the autoclaving process.
  • Figure 3 is a schematic representation of the arrangement in the autoclave before evacuation.
  • Figure 4 is a schematic representation of the arrangement in the autoclave in the evacuated vacuum bag.
  • Figure 5 is a schematic representation of the finished laminated glass available by the method according to the invention.
  • FIG. 6 shows a flow chart of the method according to the invention (FIG. 6a) in comparison to a method according to the prior art (FIG. 6b).
  • FIG. 7 shows a profile of the temperature and the pressure in the method according to the invention according to the example given below.
  • FIG. 1 shows the arrangement (6) or the composition of the laminated glass pane produced by the process according to the invention, which is preferably a curved laminated glass pane.
  • cover plate (3) preferably a chemically tempered thin glass pane containing Alkalialuminosilikatglas is a polymer film (2), preferably a polyvinyl butyral film, placed on the then the base plate (1), preferably containing soda-lime glass, is placed.
  • This arrangement can optionally be prefixed by selective heating.
  • Figure 2a shows the previously formed domed assembly (6) placed in a conventional planar vacuum bag (4a).
  • the arrows illustrate the pressure acting on the assembly during autoclaving.
  • the length of the arrows symbolizes the size of the pressure acting on the assembly (6) when it is autoclaved in the vacuum bag (4a). It becomes clear that especially at the edges and in the middle of the curved glass panes, higher pressures act on the arrangement (6).
  • FIG. 2b shows the previously formed curved arrangement (6) placed in a vacuum bag (4a) adapted to the shape of the curved arrangement.
  • a vacuum bag (4a) has two side surfaces with substantially the same curvature as the arrangement (6) placed therein. Due to the substantially same shape of the vacuum bag (4a), the distribution of the pressure acting on the assembly during autoclaving is very uniform and thus advantageous.
  • FIG. 3 shows a schematic representation of the arrangement (6) before evacuation in a vacuum bag (4a) in the autoclave (5).
  • the vacuum bag (4a) is preferably connected in the autoclave (5) to a vacuum system comprising at least one vacuum pump (not shown).
  • the vacuum bag (4a) is usually attached to an autoclave rack and connected thereto, wherein the vacuum system or the vacuum pump is connected to the frame, so that the vacuum can be applied via the frame to the vacuum bag (not shown).
  • FIG. 4 shows a schematic representation of the arrangement (6) in the evacuated vacuum bag (4b) in an autoclave.
  • the assembly (6) in the evacuated vacuum bag (4b) in the autoclave (5) is preferably maintained at ambient temperature for some time before the assembly in the evacuated vacuum bag (4b) is heated to the desired temperature by heating the autoclave (5) Heat treatment is brought. This way can residual Air that is between the discs and the foil escapes. After the heat treatment and completion of the evacuation, the autoclaving step can be directly connected by temperature and pressure increase in the autoclave (not shown).
  • FIG. 5 shows the finished laminated glass pane (7) obtainable by the process according to the invention.
  • FIG. 6 shows a flow chart of the method according to the invention (FIG. 6a) in comparison with a method according to the prior art (FIG. 6b).
  • At least one polymer film is arranged on a base disk and a cover disk on the polymer film, or at least one polymer film is arranged on a cover disk and a base disk is arranged on the at least one polymer film.
  • the assembly is transferred to a vacuum bag.
  • the vacuum bag may optionally be adapted to the shape of the arrangement.
  • the vacuum bag containing the assembly is placed in an autoclave, evacuated and the assembly is heat treated in the vacuum bag while maintaining the vacuum.
  • the vacuum is then turned off and the assembly autoclaved in the vacuum bag in the same autoclave.
  • the autoclave is cooled and removed the finished laminated glass.
  • At least one polymer film is arranged on a base disk and a cover disk on the polymer film or a polymer film is arranged on a cover disk and a base disk is arranged on the polymer film.
  • the assembly is transferred to a vacuum bag.
  • the vacuum bag containing the assembly is evacuated and the assembly in the vacuum bag is then heat treated in an oven while maintaining the vacuum.
  • we turned off the vacuum removed the assembly from the oven and the vacuum bag, and then placed it on an autoclave rack and waited for a sufficient number of prepared arrangements to fill the autoclave, resulting in an overall cooling of the discs.
  • the cooled in consequence of these steps arrangement is now placed in an autoclave and autoclaved therein.
  • FIG. 7 shows by way of example the profile of the temperatures and pressures prevailing during the process according to the invention as a function of time in accordance with the example below.
  • a polyvinyl butyral film was placed with a thickness of 0.85 mm.
  • a curved base plate made of soda-lime glass with a thickness of 2, 1 mm was arranged. This arrangement was placed in a vacuum bag, wherein the vacuum bag as shown in Fig. 2a or Fig. 2b may be formed.
  • the vacuum bag was transferred to an autoclave and connected to a vacuum system. In the vacuum bag, a vacuum of about 200 mbar was generated. This vacuum is then held at ambient temperature (about 20 ° C) for about 15 minutes.
  • the autoclave is heated to about 90 ° C, wherein the vacuum of about 200 mbar is kept active or maintained in the vacuum bag.
  • the temperature is maintained at about 90 ° C for about 30 minutes.
  • This process also known as "hot de-airing", serves to allow the remaining air, which is still between the glass panes and the foil, to escape.
  • the vacuum is switched off by switching off the vacuum pump and temperature and pressure in the autoclave in which the arrangement is in the vacuum bag are increased for autoclaving, so that reaches a temperature of 140 ° C and a pressure of 9 bar absolute in the autoclave becomes .
  • the temperature of 140 ° C and the pressure of 9 bar were maintained for about 45 min. Subsequently, the autoclave and the arrangement in the Vacuum bag actively cooled down to 40 ° C at a pressure of 9 bar. After reaching a temperature of 40 ° C, the autoclave containing the assembly in the vacuum bag was depressurized to a pressure of about 1 bar, ie normal ambient pressure, and the assembly in the vacuum bag cooled to ambient temperature (20 ° C).
  • the base and the cover plates are firmly joined together by the interposed polyvinyl butyral film and the produced curved laminated glass pane can be used, for example, as a vehicle window in a car.
  • step c) and step d) are not cooled, whereby the renewed reheating is not required, which is much more energy efficient compared to the methods known from the prior art.
  • step d) the heat treatment according to step c) and the autoclaving according to step d) in the same device, i. H. autoclaving so that the assembly does not need to be transferred from one device to another during the process, which makes the process much more efficient over the prior art processes also in terms of time invested and equipment saved.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une vitre en verre feuilleté (7), dans lequel : a) au moins une feuille en polymère (2) est disposée sur une vitre de base (1) et une vitre de recouvrement (3) est disposée sur la ou les feuilles en polymère ou au moins une feuille en polymère (2) est disposée sur une vitre de recouvrement (3) et une vitre de base (1) est disposée sur la ou les feuilles en polymère (2) ; b) l'ensemble (6) obtenu à l'étape a) est placé dans un sac à vide (4a) ; c) le vide est créé dans le sac à vide (4a) et l'ensemble (6) se trouvant dans le sac à vide (4b) dans lequel le vide a été créé est soumis à un traitement thermique dans un autoclave (5) à une température située dans la plage allant de 60 °C à 120 °C ; d) le vide est supprimé après le traitement thermique de l'étape c) et l'ensemble (6) est autoclavé dans l'autoclave (5) dans le sac à vide (4a, 4b) à une température, qui est égale ou supérieure à la température du traitement thermique de l'étape c). Le procédé selon l'invention permet de réaliser une nette économie d'énergie par rapport aux procédés conventionnels.
PCT/EP2018/055779 2017-03-20 2018-03-08 Autoclavage avec un sac à vide WO2018172094A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201880000730.8A CN108966646A (zh) 2017-03-20 2018-03-08 通过真空袋的高压釜处理

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EP17161777 2017-03-20
EP17161777.2 2017-03-20

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WO2018172094A1 true WO2018172094A1 (fr) 2018-09-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114371125A (zh) * 2022-01-27 2022-04-19 江苏铁锚玻璃股份有限公司 Tpu粘接强度的测试方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755809A (en) 1953-12-07 1956-08-29 Rhone Poulenc Sa Improvements in or relating to the manufacture of laminated safety glass
US4584245A (en) 1982-06-08 1986-04-22 Asahi Glass Company Ltd. Laminated safety glass
EP0331648A2 (fr) 1988-03-04 1989-09-06 Attilio Borgna Procédé de fabrication de verre laminé
US20070154705A1 (en) 2003-05-28 2007-07-05 Christoph Doeppner Method and device for producing composite elements and composite element
EP2647497A1 (fr) 2012-04-03 2013-10-09 Saint-Gobain Glass France Procédé de fabrication d'une plaque composite concave avec feuille de polymère préformée
US20150122406A1 (en) 2012-06-08 2015-05-07 Corning Incorporated Process for laminating thin glass laminates
US20150158277A1 (en) 2012-06-14 2015-06-11 Corning Incorporated Process for laminating thin glass laminates
US20160167348A1 (en) * 2013-07-22 2016-06-16 E. I. Du Pont De Nemours And Company Multilayer polymeric sheets and light weight laminates produced therefrom

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755809A (en) 1953-12-07 1956-08-29 Rhone Poulenc Sa Improvements in or relating to the manufacture of laminated safety glass
US4584245A (en) 1982-06-08 1986-04-22 Asahi Glass Company Ltd. Laminated safety glass
EP0331648A2 (fr) 1988-03-04 1989-09-06 Attilio Borgna Procédé de fabrication de verre laminé
US20070154705A1 (en) 2003-05-28 2007-07-05 Christoph Doeppner Method and device for producing composite elements and composite element
EP2647497A1 (fr) 2012-04-03 2013-10-09 Saint-Gobain Glass France Procédé de fabrication d'une plaque composite concave avec feuille de polymère préformée
US20150122406A1 (en) 2012-06-08 2015-05-07 Corning Incorporated Process for laminating thin glass laminates
US20150158277A1 (en) 2012-06-14 2015-06-11 Corning Incorporated Process for laminating thin glass laminates
US20160167348A1 (en) * 2013-07-22 2016-06-16 E. I. Du Pont De Nemours And Company Multilayer polymeric sheets and light weight laminates produced therefrom

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114371125A (zh) * 2022-01-27 2022-04-19 江苏铁锚玻璃股份有限公司 Tpu粘接强度的测试方法

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