WO2004000748A1 - Contenant en verre muni d'un revetement - Google Patents

Contenant en verre muni d'un revetement Download PDF

Info

Publication number
WO2004000748A1
WO2004000748A1 PCT/NL2002/000402 NL0200402W WO2004000748A1 WO 2004000748 A1 WO2004000748 A1 WO 2004000748A1 NL 0200402 W NL0200402 W NL 0200402W WO 2004000748 A1 WO2004000748 A1 WO 2004000748A1
Authority
WO
WIPO (PCT)
Prior art keywords
coating layer
zones
glass container
coating
thickness
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.)
Ceased
Application number
PCT/NL2002/000402
Other languages
English (en)
Inventor
Leendert Cornelis Hoekman
Paul Best
Guenther Eisen
Heinz Joachim Giersberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arkema Vlissingen BV
Original Assignee
Atofina Vlissingen BV
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 Atofina Vlissingen BV filed Critical Atofina Vlissingen BV
Priority to PCT/NL2002/000402 priority Critical patent/WO2004000748A1/fr
Priority to AU2002314633A priority patent/AU2002314633A1/en
Publication of WO2004000748A1 publication Critical patent/WO2004000748A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/003—General methods for coating; Devices therefor for hollow ware, e.g. containers
    • C03C17/005—Coating the outside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/08—Coverings or external coatings
    • B65D23/0807—Coatings
    • B65D23/0814—Coatings characterised by the composition of the material

Definitions

  • the invention relates to a glass container with a coating applied to the bottle and a process for applying a coating to such a bottle.
  • PCT/NL01/00916 provides for a coating process in which coating gas is applied to glass containers in a hot-end process.
  • the coating gas is applied via separate slots which are vertically offset with respect to one another.
  • the coating layer is concentrated in horizontal zones on the glass containers.
  • the present application is directed at bottles with protective coating and at coating processes, including coating processes in which the coating gas is applied concentrated in zones.
  • the invention relates to a glass container having a body with a side, usually vertical, on which a coating layer has been deposited from a gas phase, coating material in the coating layer being concentrated in a zone on the container side.
  • the side is vertical or concave (curving inward) the container has at least two zones, one at a foot of the vertical side and another at a location where the vertical side narrows towards a mouth of the bottle, the coating layer in an area on the container side between the > zones having an average thickness of less than 90% of the thicknesses in said zones and preferably less than 80% (this area is sometines referred to herein as the "low coating thickness area").
  • the average thickness in the area intermediate between the zones less than 90% and even less than 70% of the thickness in the zones.
  • average thickness in the area intermediate between the zones between 50% and 80% of the thickness in the zones.
  • the thickness in the area intermediate between the zones can vary significantly due to fluctuations, but the average thickness is less than 90% and can be less than 70% of the thickness in the zones.
  • Thickness fluctuations in prior art processes are typically at most 2CTU (Coating Thickness Units) in a layer of 30 CTU and then only locally, i.e. not on average. The preferred bottles don't have a minimum thickness in the intermediate area since the coating is not needed in the intermediate area to prevent scratching.
  • the coating layer on the bottles contains tin-oxide or titamnium applied with a hot-end coating process or chemical vapor deposition (CVD) process, but other materials and processes may be used as well.
  • a typical thickness in the zones that is sufficient to provide protection without using an excess of coating material is 20-60 CTU.
  • Figure 1 shows a bottle in a coating tunnel
  • Figure 2 shows a graph of coating layer thickness along a bottle
  • Figure 3 shows a further graph of coating layer thickness
  • Figure 4 shows a bottle with convex sides in a coating tunnel
  • Figure 5 shows a bottle with convex sides and the graph of the coating layer thickness on the bottle.
  • Figures 1 and 4 show a cross-section of a bottle 100 in a coating tunnel 102.
  • Coating tunnel 102 has openings 104a,b, 106a,b in its vertical side walls for supply and extraction of coating gas.
  • a conveyor 108 is provided within coating tunnel 102.
  • Bottle 100 is shown placed on conveyor 108.
  • Coating tunnel 102 and conveyor 108 extend in a longitudinal (at least partly horizontal) direction transverse to the cross section shown in figure 1.
  • Openings 104a,b, 106a,b are present at a two predetermined heights, which can be adjustable, elative to bottle 100, in a first zone or strip extending upward substantially from the bottom of bottle 100 and in a second zone or strip substantially around the height of the neck of bottle 100, where the body of bottle 100 starts narrowing towards its mouth.
  • Openings 104a,b, 106a,b extend in the longitudinal direction at the predetermined heights, as a band of openings with mouths of any shape, such as circular, rectangular or elongated rounded shapes, or as one or more openings with an elongated mouth with a longest diameter extending in the longitudinal direction.
  • openings 104, a,b, 106a,b are shown flush with the side walls, it will be understood that openings 104a,b, 106a,b may in fact be part of an extension that extends into coating tunnel 102 from the planes of the side walls.
  • the vertical height of openings 104a and 106a have been adjusted to accommodate the shape of a bottle having convex sides while openings 104b and 106b have been blocked so that the coating gas is directed to produce one coating zone applied on the bottle covering the apex area of the convex side and two low coating thickness areas are produced on the bottle above and below the coating zone at the apex as shown in the coating thickness graph in Figure 5.
  • Openings 104a,b, 106a,b are coupled to a supply unit (not shown) for supplying coating gas through the openings 104a,b and to a receiving unit (not shown) e.g. a pump for removing coating gas from coating tunnel 102 through openings 106a,b.
  • a receiving unit e.g. a pump for removing coating gas from coating tunnel 102 through openings 106a,b.
  • coating gas is recirculated from the receiving unit to the supply unit.
  • At each height one of the openings 104a,b in one of the side walls in coating tunnel 102 is coupled to a supply unit and the opposite opening at the same height in the opposite side wall is coupled to the pump.
  • conveyor 108 transports a series of bottles though coating tunnel 102 in the longitudinal direction.
  • coating gas is supplied into coating tunnel from openings 104a,b in the vertical side walls of coating tunnel. Chemicals from the coating gas attach to the bottles 100 and a remainder of the coating gas is pumped out of coating tunnel through openings 106a,b in the side walls opposite to the openings 104a,b through which the coating gas is supplied.
  • Tin Oxide is deposited on bottle 100 from the coating gas, while the bottle is hot, for example at a temperature of around 600 degrees Celsius, but it will be understood that other chemical materials or combinations thereof and other temperatures may be used.
  • the coating layer is concentrated in zones on bottle 100 at these height ranges.
  • it is characteristic of deposition chemicals from a coating gas that the coating layer does not end abruptly at the edge outside the zones, such as when the coating material would be applied by painting.
  • the thickness profile drops off gradually outside the zones with maximum coating layer thickness.
  • Figures 2 and 5 show a graph of a profile of the coating layer thickness "t" as a function of height "h” along bottle 100, next top a bottle 100_ substantially at the heights where the corresponding thicknesses occur on bottle 100.
  • the profile has two zones SI, S2 of maximum thickness 110, 112, separated by an area A in which the thickness reaches a minimum 114.
  • the thickness is generally everywhere smaller than in zones SI, S2.
  • the average thickness is more than a certain percentage of for example 10% below the average thickness in zones SI, S2.
  • the thickness in the area A is below the thickness everywhere in zones SI, S2.
  • the coating layer protects bottle 100 against damage, such as scratching though contact with other bottles.
  • the coating layer preferably has at least a minimum thickness to in a range of for example 20-60 CTU (Coating Thickness Units) and more preferably 40 CTU on the side of its body in the area where contact between two adjacent bottles is likely to cause scratching.
  • the coating zones are near the bottom and near the location where the body begins to narrow towards its mouth.
  • the coating zone is at the apex of the convex side with low coating thickness areas above and below the coating zone at the apex.
  • the required amount of coating material would be roughly proportional to the height of the bottle, whereas the required amount of coating material is substantially independent of the height of the bottle when the coating material is concentrated in zones SI, S2 with a gradual dropoff in the intermediate area A.
  • the openings 104a, and 104b (if used), from which coating gas is supplied are preferably as close as possible to the part of coating tunnel 102 through which conveyor 108 transports bottle 100. This permits a relatively sharp drop-off of the thickness " t" outside zones SI, S2.
  • At least some distance of for example 1 -5 cm, and preferably 2.5-3.5 cm is preferably maintained between the edge of openings 104a,b and bottle 100.
  • this distance is less than twice the vertical extent of the openings, and preferably not more than substantially the vertical extent. This will result in some spreading of the coating layer, so that apart from the zones
  • the coating tunnel it is desirable to configure the coating tunnel so that some turbulence occurs in the coating gas at least at the mouth of the openings, rather than laminar flow. This increases the speed with which the coating layer grows during processing.
  • This turbulence can be generated by an appropriate combination of supply flow strength of the coating gas and the geometry of the openings.
  • turbulence will also contribute to deposition of some unneeded coating material outside zones Si, S2, but coating material may nevertheless be saved due to less losses owing to the increased deposition speed.
  • the openings 106a,b through which the coating gas is removed from coating tunnel 102 are preferably located at the same height as the openings 104a,b through which the coating gas is supplied and opposite these openings.
  • the ratio between minimum 114 and maxima 110, 112 will increase when bottle 100 becomes less high, since substantially the same amount of coating material is needed for bottles 100 with different height, because the width of maxima 100, 112 does not generally depend on the height of the bottle 100.
  • Figure 3 shows the graph of a profile of the thickness of the coating layer on a bottle that is less high than the bottle of figure 1 and 2. It should be noted that the ratio between the thickness at the minimum and at the maxima is higher than in figure 2.
  • any bottle in which coating material is concentrated in one or two zones that corresponds to the portions of the bottle sides where contact between two adjacent bottles is likely to cause scratching is advantageously less expensive to make than a bottle 100 with a coating layer with substantially uniform thickness. This happens when the average thickness of the coating layer in the area A is less than the minimum thickness to in the zones SI, S2, or the average thickness in the zones SI, S2. When the average thickness in the area A between zones is more than 2 CTU less than the minimum thickness to in the zones SI, S2 or the average thickness in the zones SI, S2, a saving is already realized.
  • bottles 100 can easily be realized on which the average thickness in area A and in any case the height at the minimum 114 is less than 0.9 times the minimum thickness to in the zones SI, S2, and preferably less than 80% and most preferred less than half the minimum thickness to in the zones SI, S2 or the average thickness in the zones SI, S2. This results in correspondingly greater savings.
  • a bottle having convex sides as shown in Figure 5 can be produced with considerable savings in coating chemicals since the thickness in the coating zone covering the apex of the convex side is at the desired thickness in the region that corresponds to the portion of the bottle sidewall where contact between two adjacent bottles is likely to cause scratching.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Vapour Deposition (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un contenant en verre, notamment une bouteille (100) possédant un corps sur un côté duquel une couche de revêtement a été déposée à partir d'une phase gazeuse. Le matériau de revêtement contenu dans la couche de revêtement est concentré en une zone de contact, de préférence, dans au moins deux zones (110, 112), au pieds du côté vertical et à l'endroit où le côté vertical rétrécit en direction du goulot de la bouteille. La couche de revêtement se trouve dans une zone (114) située à l'extérieur des zones de contact ou des zones possédant une épaisseur moyenne inférieure à 90 % de l'épaisseur de cette zone.
PCT/NL2002/000402 2002-06-19 2002-06-19 Contenant en verre muni d'un revetement Ceased WO2004000748A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/NL2002/000402 WO2004000748A1 (fr) 2002-06-19 2002-06-19 Contenant en verre muni d'un revetement
AU2002314633A AU2002314633A1 (en) 2002-06-19 2002-06-19 Glass container with a coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NL2002/000402 WO2004000748A1 (fr) 2002-06-19 2002-06-19 Contenant en verre muni d'un revetement

Publications (1)

Publication Number Publication Date
WO2004000748A1 true WO2004000748A1 (fr) 2003-12-31

Family

ID=29997565

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2002/000402 Ceased WO2004000748A1 (fr) 2002-06-19 2002-06-19 Contenant en verre muni d'un revetement

Country Status (2)

Country Link
AU (1) AU2002314633A1 (fr)
WO (1) WO2004000748A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026909A1 (de) * 1969-06-03 1970-12-10 Aktiebolage_t Platmanufaktur, Malmö (Schweden) Verpackung mit einem Hohlkörper aus Glas und Verfahren zu deren Herstellung
US3912100A (en) * 1973-06-21 1975-10-14 Owens Illinois Inc Coated glass container and method of making same
DE2824403A1 (de) * 1978-06-03 1979-12-13 Veba Glas Ag Verfahren und vorrichtung zum beschichten von gegenstaenden, insbesondere glasflaschen
WO2001025503A1 (fr) * 1999-10-05 2001-04-12 Cardinal Companies, Lp Hotte de revetement de recipients en verre
WO2002066389A1 (fr) * 2000-12-20 2002-08-29 Atofina Vlissingen B.V. Appareil d'application d'un revetement sur des recipients en verre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2026909A1 (de) * 1969-06-03 1970-12-10 Aktiebolage_t Platmanufaktur, Malmö (Schweden) Verpackung mit einem Hohlkörper aus Glas und Verfahren zu deren Herstellung
US3912100A (en) * 1973-06-21 1975-10-14 Owens Illinois Inc Coated glass container and method of making same
DE2824403A1 (de) * 1978-06-03 1979-12-13 Veba Glas Ag Verfahren und vorrichtung zum beschichten von gegenstaenden, insbesondere glasflaschen
WO2001025503A1 (fr) * 1999-10-05 2001-04-12 Cardinal Companies, Lp Hotte de revetement de recipients en verre
WO2002066389A1 (fr) * 2000-12-20 2002-08-29 Atofina Vlissingen B.V. Appareil d'application d'un revetement sur des recipients en verre

Also Published As

Publication number Publication date
AU2002314633A1 (en) 2004-01-06

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