WO1995014552A1 - Glass frosting method - Google Patents

Glass frosting method Download PDF

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Publication number
WO1995014552A1
WO1995014552A1 PCT/EP1994/003947 EP9403947W WO9514552A1 WO 1995014552 A1 WO1995014552 A1 WO 1995014552A1 EP 9403947 W EP9403947 W EP 9403947W WO 9514552 A1 WO9514552 A1 WO 9514552A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
particles
glass surface
scales
abrasive particles
Prior art date
Application number
PCT/EP1994/003947
Other languages
French (fr)
Inventor
Gérard Horlaville
Original Assignee
Battelle Memorial Institute
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 Battelle Memorial Institute filed Critical Battelle Memorial Institute
Publication of WO1995014552A1 publication Critical patent/WO1995014552A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C19/00—Surface treatment of glass, not in the form of fibres or filaments, by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/06—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for producing matt surfaces, e.g. on plastic materials, on glass

Definitions

  • the present invention relates to a glass matting process according to which the surface of the glass is roughened by directing a jet of abrasive particles against it.
  • the bottles are hung on a rubber stopper to be completely soaked in acid bread. It can happen that acid accidentally enters the bottle which is difficult to detect and requires repeated ringing. Therefore the bottles should be rinsed both inside and out.
  • the rinsing water, olus or less charged with acid cannot be rejected without undergoing a preliminary treatment, which poses an imoortant proclem taking into account the very large quantities of water necessary.
  • the surface of the bottles is matted by subjecting them to a pressure jet of acrasive darticles and then in filling the bottles at a temperature close to the softening temperature. so that the roughness after the sanding rounds and they are cooled. If the sandblasting operation is inexpensive, it is not the same as that of heating. In fact, glass is a poor conductor of heat and the temperature gradients generate internal tensions which cause it to break, so that the heating must be progressive to heat the mass fairly uniformly which requires significant energy consumption and dull long enough processing.
  • JP-A 4 108 872 and JP-A 61 209 927 have also proposed compositions embedded with a matting agent for coating the glass.
  • CA-1 133 770 offers to reinforce a rough glass surface in order to favor the fastening of an acrylic belt.
  • the object of the present invention is to obtain matting with glass directly by sanding but without having the known drawbacks of this mode of machining, that is to say the whitish appearance of the glass surface and the visible marking. to the naked eye fingerprints on the glass thus treated caused by the retention of fat by capillarity in the micro-cracks of the surface to the sadé glass.
  • the subject of this invention is a method of glass matting according to claim 1.
  • the advantage of this process lies in the fact that the matt appearance obtained is simply given by the sacled surface rid of the multitude of scales resulting in sandblasting and which give a whitish appearance by forming a multitude of refractions of the incident light. At the same time, the micro-cracks between the scales and the surface are thus revealed. However, these scales cannot be removed economically by washing even with brushing or rubbing with an abrasive material.
  • the surface of the glass in this case smooth bottle glass
  • a flow of pressurized air coagulated with abrasive particles for example silicon carbide from 45 to 100 ⁇ m, the pressure of air being of the order of 100 to 300 kPa.
  • the distance between the end of the projection nozzle and the surface of the glass is approximately 150 mm.
  • the bottle is rotated around its short axis of revolution to obtain a uniformly rough surface.
  • the bottles are immersed in an ultrasonic cleaning tank comprising eight sonotrodes distributed over the walls and containing 22 liters of tap water.
  • the frequency of the sonctrodes is 17.2 KHZ and the power is 8 v 200 watt.
  • the surface area of the glass surface area is represented by a 1000 ⁇ agronomic photo in FIG. 1 appended. It clearly shows the presence of scales and other particles of glass attached to the surface of the glass and giving the whitish appearance which does not resemble that of a riot glass surface that you try to maintain.
  • the photograph in Figure 2 attached is a 1000x magnification also of the same glass surface after the ultrasonic treatment. It can be seen that the surface has edges and hollows giving the glass its mat appearance. but that the multiple scales and particles oe ver re which cover the surface of Figure 1 have eratically disappeared.
  • the cavitation generated by the ultrasonic pressure waves in the water in the vicinity of the glass surface made it possible to detach these scales and these particles and to leave only a rough surface that was practically free of micro-cracks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

A method wherein a glass surface is roughened by subjecting it to a pressurised stream of abrasive particles, whereafter the glass particles and flakes attached to the glass surface after it has been subjected to said pressurised abrasive particles are removed by immersing said glass surface in a water bath exposed to ultrasonic pressure waves strong enough to cause cavitation in the region of said surface.

Description

PROCEDE DE MATAGE DE VERRE  GLASS MATTING PROCESS
La présente invention se rapporte a un procedé de matage de verre selon lequel on rend la surface du verre rugueuse en dirigeant contre elle un jet sous pression de particules abrasives. The present invention relates to a glass matting process according to which the surface of the glass is roughened by directing a jet of abrasive particles against it.
Cn a déjà proposé de rendre au verre mat. notamment du verre de bouteille pour donner l'impression qu'elle contient un liquide plus froid que la température ambiante, de sorte que l'humidité atmospnérique se condense à sa surface. Cet, aspect peut être donné en trempant la bouteille dans un bain d'acide fluorhydrique qui attaque le verre et le rend mat comme l'est une bouteille embuée. L'utilisation de l'acide fluorhydrique pose cependant. de nombreux problemes de sécuri té aussi bien vis-à-vis des cersonnes impliquées dans la mise en oeuvre du procédé que de l'environnement.  It has already been proposed to return to mat glass. especially bottle glass to give the impression that it contains a liquid colder than room temperature, so that atmospheric moisture condenses on its surface. This aspect can be given by soaking the bottle in a hydrofluoric acid bath which attacks the glass and makes it mat like a steamy bottle. The use of hydrofluoric acid poses however. numerous safety problems both with regard to the people involved in the implementation of the process and with the environment.
Four mettre en oeuvre ce procédé, les bouteilles sont accrochées à un bouchon de caoutchouc pour être complètement trempées dans le pain d'acide. Il peut arriver que de l'acide pénètre accidentellement dans la couteille ce qui est difficile à détecter et nécessite des ringages répétés. De ce fait les bouteilles doivent être rincées aussi bien a l'intérieur qu'à l'extérieur. L'eau de rinçage, olus ou moins chargée d'acide ne peut pas être rejetée sans subir un traitement préalable, ce qui pose un proclème imoortant compte tenu des très grandes quantités d'eau nécessaires.  To implement this process, the bottles are hung on a rubber stopper to be completely soaked in acid bread. It can happen that acid accidentally enters the bottle which is difficult to detect and requires repeated ringing. Therefore the bottles should be rinsed both inside and out. The rinsing water, olus or less charged with acid cannot be rejected without undergoing a preliminary treatment, which poses an imoortant proclem taking into account the very large quantities of water necessary.
Par ailleurs, ce procédé n'est cas opérant sur des verres recouverts d'une couene d'oxyαe métalliαue. qui recresentent une oroσortion substantielle des articles en verre .  Furthermore, this process is not the case operating on glasses covered with a metal oxene coating. which represent a substantial oroσortion of glass articles.
Enfin, la reproductibilité au matage par attaque à l'aciαe est difficile à assurer en fonction eu vieillissement au bain.  Finally, the reproducibility in matting by aciαe attack is difficult to ensure depending on aging in the bath.
C'est la raison pour laαuelle on a propose de remclacer ce proceαé à risdues par d'autres moins dangereux à mettre en oeuvre. C'est ainsi que selon le JP-A 01 171 764, on mate la surface αe bouteilles en les soumettant a un jet sous pression de Darticules acrasives et ensuite en enauffe les bouteilles a une température voisine de la température de ramollissement pour que les aspérités consécutives au sablage s'arrondissent et on les refroidit. Si l'opération de sablage est peu coûteuse, il n'en est pas de même de celle de chauffaçe. En effet, le verre est mauvais conducteur de chaleur et les gradients de température génèrent des tensions internes qui provoquent sa cassure, de sorte que le chauffage doit être progressif pour chauffer assez uniformément la masse ce qui nécessite une consommation d'énergie importante et un ternes de traitement assez long. This is the reason for laαuelle we proposed to replace this proceαé risdues by others less dangerous to implement. Thus, according to JP-A 01 171 764, the surface of the bottles is matted by subjecting them to a pressure jet of acrasive darticles and then in filling the bottles at a temperature close to the softening temperature. so that the roughness after the sanding rounds and they are cooled. If the sandblasting operation is inexpensive, it is not the same as that of heating. In fact, glass is a poor conductor of heat and the temperature gradients generate internal tensions which cause it to break, so that the heating must be progressive to heat the mass fairly uniformly which requires significant energy consumption and dull long enough processing.
On a également proposé dans le JP-A 4 108 872 et dans le JP-A 61 209 927 des compositions enargées d'un agent de matage pour revêtir le verre .  JP-A 4 108 872 and JP-A 61 209 927 have also proposed compositions embedded with a matting agent for coating the glass.
Enfin, le CA- 1 133 770 propose αe renαre une surface de verre rugueuse aXn αe favoriser l'accroenage d'une ceinture acrylique. Ainsi on pourrait reméαier à l'inconvénient des ceux solutions précédentes qui résiαe αans un mauvais accroenage αes compositions chargées d'un agent de matage en rendant la sur-face rugueuse comme propose dans le CA- 1 133 770. Il n'en demeure oas moins αue αans ces solutions c'est l'agent de matage incorporé à la résine qui donne au ve r re son aspect mat et non la rugosité inαuite par le sablage.  Finally, CA-1 133 770 offers to reinforce a rough glass surface in order to favor the fastening of an acrylic belt. Thus we could remedy the disadvantage of those previous solutions which resiαans αans bad hooking αes compositions loaded with a matting agent by making the surface rough as proposed in CA-1 133 770. There remains none less αue αans these solutions it is the matting agent incorporated into the resin which gives the glass its mat appearance and not the roughness inαuite by sanding.
Le but de la présente invention est d'obtenir le matage au verre directement par saplage mais sans présenter les inconvénients connus de ce mode d'usinage, c'est-à-dire l'aspect blancnâtre de la surface du verre et le marquage visible à l'ceil nu des empreintes de doigts sur le verre ainsi traité provoqué par la rétention de graisse par capillarité dans les micro-fissures de la surface au verre sadé.  The object of the present invention is to obtain matting with glass directly by sanding but without having the known drawbacks of this mode of machining, that is to say the whitish appearance of the glass surface and the visible marking. to the naked eye fingerprints on the glass thus treated caused by the retention of fat by capillarity in the micro-cracks of the surface to the sadé glass.
A cet effet, cette invention a pour objet un procédé de matage de verre selon la revendication 1.  To this end, the subject of this invention is a method of glass matting according to claim 1.
L'avantage de ce procédé réside dans le fait que l'aspect mat obtenu est simplement donné par la surface saclée debarrassée de la multitude d'écailles résultant au sablâge et qui donnent un aspect blanchâtre en formant une multitude de réfractions de la lumière incidente. Par la même occasion on fait ainsi qiscaraître les micro-fιssures entre les écailles et la surface. Or. ces écailles ne peuvent pas être éliminées de façon économique par lavage même accompagné d'un brossage ou d'un frottage avec un matériau aprasif. The advantage of this process lies in the fact that the matt appearance obtained is simply given by the sacled surface rid of the multitude of scales resulting in sandblasting and which give a whitish appearance by forming a multitude of refractions of the incident light. At the same time, the micro-cracks between the scales and the surface are thus revealed. However, these scales cannot be removed economically by washing even with brushing or rubbing with an abrasive material.
Selon la présente invention, il est proposé de soumettre la surface du verra , ici du verre lisse a bouteille à un flux d'air sous pression cnargé de particules abrasives, par exemple de carbure de silicium de 45 à 100 um, la pression d'air étant de l'ordre de 100 à 300 kPa. La distance entre l'extrémité de la puse de projection et la surface du verre est d'environ 150 mm. La bouteille est animée d'un mouvement de rotation autour de son axe de révolution cour obtemr une surface uniformément rugueuse.  According to the present invention, it is proposed to subject the surface of the glass, in this case smooth bottle glass, to a flow of pressurized air coagulated with abrasive particles, for example silicon carbide from 45 to 100 μm, the pressure of air being of the order of 100 to 300 kPa. The distance between the end of the projection nozzle and the surface of the glass is approximately 150 mm. The bottle is rotated around its short axis of revolution to obtain a uniformly rough surface.
Ensuite on immerge les bouteilles dans un bac de nettoyage à ultra-sons comprenant huit sonotrodes réparties sur les parois et contenant 22 litres d'eau du robinet. La frequence des sonctrodes est de 17,2 KHZ et la puissance est de 8 v 200 watt.  Then the bottles are immersed in an ultrasonic cleaning tank comprising eight sonotrodes distributed over the walls and containing 22 liters of tap water. The frequency of the sonctrodes is 17.2 KHZ and the power is 8 v 200 watt.
La surface eu verre acres saplage est représentée par une photograonie agranαie 1000x à la figure 1 annexée. Elle montre clairement la présence d'écaillés et autres particules de v e rre attachees a la surface du verra et donnant l'aspect blanchatre qui ne ressemelé pas a celui e'une surface de verre emeuée que l'on enerene à eotenir.  The surface area of the glass surface area is represented by a 1000 × agronomic photo in FIG. 1 appended. It clearly shows the presence of scales and other particles of glass attached to the surface of the glass and giving the whitish appearance which does not resemble that of a riot glass surface that you try to maintain.
La photographie de la figure 2 annexée est un agrandissement 1000x également de la même surface de verre après le traitement aux ultrasons. On observe que la surface comporte des arêtes et des creux donnant au verre son aspect mat. mais que les multiples écailles et particules oe ve r re qui recouvrent la surface de la figure 1 ont eratiquement disparu. La cavitation engendrée par les ondes de pression ultrasenores dans l'eau au voisinage de la surface au v erre a permis de détacher ces écailles et ces particules et de ne laisser qu'une surface rugueuse eraticuement sans micro-fissures.  The photograph in Figure 2 attached is a 1000x magnification also of the same glass surface after the ultrasonic treatment. It can be seen that the surface has edges and hollows giving the glass its mat appearance. but that the multiple scales and particles oe ver re which cover the surface of Figure 1 have eratically disappeared. The cavitation generated by the ultrasonic pressure waves in the water in the vicinity of the glass surface made it possible to detach these scales and these particles and to leave only a rough surface that was practically free of micro-cracks.
Il est evident que l'exemple donne ci-dessus peut être modifié et du'il est notamment possible d'augmenter la puissance des sonotrodes et/ou de varier leur fréquence. De même, certains adeitifs tels eue des surfactants pourraient être ajoutés a l'eau pour améliorer l'efficacité. Il est encore pessible de légèrement augmenter la température de l'eau par exemple à 50ºC. It is obvious that the example given above can be modified and it is in particular possible to increase the power of the sonotrodes and / or to vary their frequency. Likewise, certain additives such as surfactants could be added to the water to improve efficiency. It is still possible to slightly increase the temperature of water for example at 50ºC.
On peut constater αue le procédé décrit ici est absolument respectueux de l'environnement, au'il consomme Deu d'énergie et peu d'eau, l'eau du bain pouvant être filtrée et recirculée. Il est de ce fait aussi intéressant du point de vue économique. Les bouteilles obtenues ne sont constituées que de verre et peuvent donc être recyclées sans Droblème. La surface de verre ainsi traitée n'est pas susceDtible αe subir de dégradation lorsαu'elle entre en contact avec une autre boutei lie.  It can be seen that the process described here is absolutely respectful of the environment, since it consumes two energy and little water, the bath water being able to be filtered and recirculated. It is therefore also interesting from an economic point of view. The bottles obtained are made only of glass and can therefore be recycled without Droblème. The glass surface thus treated is not susceptible to undergo degradation when it comes into contact with another bottle.

Claims

REVENDICATION CLAIM
Procédé de matage de ve rre selon leαuel on rend la surface du verre rugueuse en dirigeant contre elle un jet sous pression de particules abrasives, caractérisé par le fait que l'on élimine ensuite les écailles et particules de verre fixées à ladite surface, formées consécutivement à la projection des Darticules abrasives sous pression, en immergeant cette surface de verre oans un bain de liquide soumis à des ondes de pression à fréquence ultrasonore d'intensité apte à engendrer de la cavitation au voisinage de cette surface. Glass matting process according to which the surface of the glass is roughened by directing against it a pressurized jet of abrasive particles, characterized in that the scales and glass particles attached to said surface are then removed, formed consecutively to the projection of the abrasive Darticles under pressure, by immersing this glass surface in a bath of liquid subjected to pressure waves of ultrasonic frequency of intensity capable of generating cavitation in the vicinity of this surface.
PCT/EP1994/003947 1993-11-26 1994-11-28 Glass frosting method WO1995014552A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH354193 1993-11-26
CH3541/93-0 1993-11-26

Publications (1)

Publication Number Publication Date
WO1995014552A1 true WO1995014552A1 (en) 1995-06-01

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PCT/EP1994/003947 WO1995014552A1 (en) 1993-11-26 1994-11-28 Glass frosting method

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758572A1 (en) * 1995-08-12 1997-02-19 OT Oberflächentechnik GmbH Schwerin Method for removing layers of material from a surface of a workpiece
FR2749297A1 (en) * 1996-06-04 1997-12-05 Total Raffinage Distribution GLASS OBJECT OR GLASS-TYPE MATERIAL WITH SATIN ASPECT AND METHOD OF MANUFACTURING THE SAME
WO2000034010A1 (en) * 1998-12-11 2000-06-15 Bausch & Lomb Surgical, Inc. Air abrasive texturing process
EP1236696A1 (en) 1999-08-26 2002-09-04 Ishizuka Glass Kabushiki Kaisha Method for producing frost glass product
CZ302636B6 (en) * 2010-09-10 2011-08-10 Capka@Vlastimil Flat glass treatment method and apparatus for making the same
CN104016591A (en) * 2014-06-18 2014-09-03 蓝思科技股份有限公司 Low-reflection frosting process for plate glass
WO2018100270A1 (en) * 2016-12-01 2018-06-07 Sa Gerard Pariche Process and facility for frosting a glass container
CN110605667A (en) * 2019-09-19 2019-12-24 成都正恒动力股份有限公司 Sand blasting coarsening method for improving bonding strength of inner hole coating

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE897148C (en) * 1952-08-09 1953-11-19 Ilse Kuesters Method and device for matting glass by sandblasting using pressure
JPS57144666A (en) * 1981-03-04 1982-09-07 Masuda:Kk Frosted reinforced glass and its production
DD203477A1 (en) * 1982-02-26 1983-10-26 Bergk Karl Heinz CLEANING METHOD FOR GRINDED AND POLISHED GLASS AND METAL PRODUCTS
FR2621268A1 (en) * 1987-10-06 1989-04-07 Claude Segura Chemicophysical process for polishing metals
JPH01208336A (en) * 1988-02-15 1989-08-22 Shirai Tekkosho:Kk System for making slide glass for microscopes
EP0385484A1 (en) * 1989-03-02 1990-09-05 Osvetlovaci Sklo, Statni Podnik Process for matting glass objects, especially for lighting purposes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE897148C (en) * 1952-08-09 1953-11-19 Ilse Kuesters Method and device for matting glass by sandblasting using pressure
JPS57144666A (en) * 1981-03-04 1982-09-07 Masuda:Kk Frosted reinforced glass and its production
DD203477A1 (en) * 1982-02-26 1983-10-26 Bergk Karl Heinz CLEANING METHOD FOR GRINDED AND POLISHED GLASS AND METAL PRODUCTS
FR2621268A1 (en) * 1987-10-06 1989-04-07 Claude Segura Chemicophysical process for polishing metals
JPH01208336A (en) * 1988-02-15 1989-08-22 Shirai Tekkosho:Kk System for making slide glass for microscopes
EP0385484A1 (en) * 1989-03-02 1990-09-05 Osvetlovaci Sklo, Statni Podnik Process for matting glass objects, especially for lighting purposes

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8408, Derwent World Patents Index; AN 84-043301 *
DATABASE WPI Week 8939, Derwent World Patents Index; AN 89-283053 *
PATENT ABSTRACTS OF JAPAN vol. 6, no. 249 (M - 177)<1127> 8 December 1982 (1982-12-08) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758572A1 (en) * 1995-08-12 1997-02-19 OT Oberflächentechnik GmbH Schwerin Method for removing layers of material from a surface of a workpiece
FR2749297A1 (en) * 1996-06-04 1997-12-05 Total Raffinage Distribution GLASS OBJECT OR GLASS-TYPE MATERIAL WITH SATIN ASPECT AND METHOD OF MANUFACTURING THE SAME
EP0811582A1 (en) * 1996-06-04 1997-12-10 Total Raffinage Distribution S.A. Glass or glass-type article with satin appearance and its production process
WO2000034010A1 (en) * 1998-12-11 2000-06-15 Bausch & Lomb Surgical, Inc. Air abrasive texturing process
US6264693B1 (en) 1998-12-11 2001-07-24 Bausch & Lomb Surgical, Inc. Air abrasive texturing process for intraocular implants
EP1236696A1 (en) 1999-08-26 2002-09-04 Ishizuka Glass Kabushiki Kaisha Method for producing frost glass product
US6527628B2 (en) 1999-08-26 2003-03-04 Ishizuka Glass Kabushiki Kaisha Method for producing frost glass product
CZ302636B6 (en) * 2010-09-10 2011-08-10 Capka@Vlastimil Flat glass treatment method and apparatus for making the same
CN104016591A (en) * 2014-06-18 2014-09-03 蓝思科技股份有限公司 Low-reflection frosting process for plate glass
WO2018100270A1 (en) * 2016-12-01 2018-06-07 Sa Gerard Pariche Process and facility for frosting a glass container
FR3059580A1 (en) * 2016-12-01 2018-06-08 Sa Gerard Pariche METHOD AND INSTALLATION FOR DEPOLISHING GLASS CONTAINER
CN110605667A (en) * 2019-09-19 2019-12-24 成都正恒动力股份有限公司 Sand blasting coarsening method for improving bonding strength of inner hole coating

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