NZ508784A - Method and apparatus for coating bottles - Google Patents
Method and apparatus for coating bottlesInfo
- Publication number
- NZ508784A NZ508784A NZ508784A NZ50878499A NZ508784A NZ 508784 A NZ508784 A NZ 508784A NZ 508784 A NZ508784 A NZ 508784A NZ 50878499 A NZ50878499 A NZ 50878499A NZ 508784 A NZ508784 A NZ 508784A
- Authority
- NZ
- New Zealand
- Prior art keywords
- coating
- bottles
- bottle
- station
- feed
- Prior art date
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 70
- 239000011248 coating agent Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 31
- 239000008199 coating composition Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000007921 spray Substances 0.000 description 24
- 210000003739 neck Anatomy 0.000 description 16
- 238000009472 formulation Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 235000011468 Albizia julibrissin Nutrition 0.000 description 6
- 241001070944 Mimosa Species 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/002—Processes for applying liquids or other fluent materials the substrate being rotated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0228—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
- B05B13/0221—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
- B05B13/0242—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the objects being individually presented to the spray heads by a rotating element, e.g. turntable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
Landscapes
- Spray Control Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A method and apparatus for coating bottles made from a plastics material with a coating formulation is disclosed. The method includes the steps of: a) positioning bottles on support members which engage the bottles; b) successively moving each bottle along a path (7) to a coating station (13); c) whilst each bottle is at the coating station (13), rotating each bottle about its longitudinal axis and simultaneously spray coating the exposed outer surface of the bottle; and d) transferring the coated bottles to a curing oven (19) and curing the coatings in the oven.
Description
METHOD AND APPARATUS FOR COATING BOTTLES The present invention relates to a method and to an apparatus for coating bottles with a coating 10 formulation.
In particular, the present invention relates to a method and to an apparatus for coating PET bottles with a formulation that forms a coating that acts as a C03/02 gas 15 barrier.
It is known to coat PET bottles with gas barrier coating formulations by: (a) positioning bottles on an array of downwardly extending collets that retain the bottles vertically; and (b) moving the array of collets along a continuous path that transports the bottles: (i) past a series of sprays in a spray chamber which spray the external surface of the bottles and forms coat ings thereon; (ii) through a curing oven and curing the coatings on the bottles; and (iii) to an out-feed station that detaches the cured coated bottles from the collets.
Printed from Mimosa 12/12/2000 13:57:42 page -3- 2 ^ & There are a number of significant disadvantages with the known method and apparatus.
By way of example, there is substantial wastage, typically 35%, of the coating formulation in the spray chamber. This is a particularly serious issue in view of the high cost of gas barrier coating formulations.
The substantial wastage of the coating formulation also makes it necessary to carry out significant on-going maintenance of the spray chamber, the associated air ventilation system, and the collets to remove build-up of the coating formulation.
Furthermore, the use of collets to transport bottles through the spray chamber and the oven and the arrangement of collets in a continuous path makes it necessary to use a relatively long curing oven which occupies a relatively substantial space.
An object of the present invention is to provide an alternative method and apparatus for coating bottles with a coating formulation.
According to the present invention, there is provided a method of coating bottles made from a plastics material with a coating formulation, which method includes the steps of: fi,N oo ^ s a) positioning bottles on support members which engage the bottles at an in-feed station; b <= b) successively moving each bottle along a path to a coating station; - 3 5087 c) stopping the movement of the support members along the path when a support member carrying a bottle reaches the coating station; d) whilst each bottle is at the coating station, rotating each bottle about its longitudinal axis and simultaneously spray coating the exposed outside surface of the bottle; e) moving the support members and coated bottles ^ thereon from the coating station to an out-feed station; f) detaching the coated bottles from the support members at the out-feed station; g) moving the support members from the out-feed station to the in-feed station; and h) transferring the coated bottles to a curing oven and curing the coatings in the oven.
^ The coating formulation may be any suitable formulation.
Preferably, the coating formulation forms a coating that prevents/minimises gas transfer through the plastics material.
S Q, g-y s w a. p >> Preferably the plastics material is PET. — o P = S ^ -9- \J Preferably the support members engage the open ends of Q e=» yj the bottles.
C (§£ Preferably the method includes spray coating exposed surfaces of each bottle at the coating station in two steps, wherein the first step includes spray coating exposed surfaces of the neck and base and the second step includes spray coating exposed surfaces of the body of the bottle.
More preferably the method includes moving the bottles along the path in indexed steps whereby when a support member carrying a bottle stops at the coating station, simultaneously: (i) a support member carrying a coated bottle stops at the out-feed station; and (ii) a support member from which a coated bottle has been detached stops at the in-feed station.
Preferably the method includes transferring the coated bottles from the support members to a separate support assembly and moving the support assembly into the curing oven.
According to the present invention there is provided apparatus for spray coating bottles made from a plastics material with a coating formulation, which apparatus includes: (a) a coating station which includes spray coating means for spraying the coating formulation onto exposed surfaces of bottles, a nSjl (b) an assembly for supporting a plurality of bottles and moving the bottles in a path from an in-feed station to the coating station and from the coating station to an out-feed station, the assembly including a plurality of support members and a drive means for moving the bottles along the path from the in-feed to the out-feed station with each support member being adapted to hold a bottle and to rotate the bottle about its longitudinal axis when the bottle is at the coating station to facilitate spray coating of the exposed surface of the bottle, and the drive means being adapted to stop the movement of the bottles along the path when a bottle reaches the coating station; and (c) a transfer means for detaching coated bottles from the support members at the out-feed station and for transferring the coated bottles to a curing oven.
Preferably the coating station includes: (i) a spray coating assembly for spray coating the neck and base regions of the bottle; and S3 (ii) a separate spray coating assembly for spray - c."5> ^*5 o-* ^ coating the body of the bottle that is downstream w dr £ a ^ of the neck/base spray coating assembly in the o fp q cs yj direction of movement of bottles along the path A 1~ from the in-feed to the out-feed stations.
More preferably the drive means is adapted to stop the movement of bottles along the path when a bottle reaches * ~ - 6 - ™ A w ft the neck/base spray coating assembly and when a bottle reaches the body spray coating assembly.
Preferably the drive means is adapted to move the support members and bottles carried thereon in a series of indexed steps whereby in use when one of the support members stops at the coating station, simultaneously: (i) a support member carrying a coated bottle stops at the out-feed station; and (ii) a support member from which a coated bottle has been detached stops at the in-feed station.
Preferably the assembly for supporting and moving the bottles includes a turret that is rotatable about a vertical axis.
Preferably the support members are mounted to the turret so as to support bottles to move in a circular path.
Preferably the support members are adapted to support bottles horizontally.
More preferably each support member includes a spindle that is rotatable about its axis and a collet for retaining a bottle to the support member in a horizontal position.
I? Preferably the transfer means includes a support C) n,f\[ F-jyi assembly for supporting the coated bottles horizontally.
P2 C-5 C5 47 o b <=» iLy © ■rj <0 3? ^ Preferably the support assembly includes a plurality of cradles for the coated bottles. cu s'W LZ (at WO 99/65613 PCT/AU99/00498 The present invention is described further by way of example with reference to the accompanying drawings of which: Figure 1 is a top plan view which shows the general layout of the components of a preferred embodiment of an apparatus in accordance with the present invention; Figure 2 is an end elevation of the neck/base 10 spray assembly and the body spray assembly which form the coating station of the apparatus, as viewed in the direction of the arrow A in Figure 1; Figure 3 is a side elevation of the neck/base 15 spray assembly; Figure 4 is an end elevation of the neck/base spray assembly as viewed in the direction of the arrow B in Figure 3; Figure 5 is a side elevation, of the body spray assembly; and Figure 6 is an end elevation of the body spray 25 assembly as viewed in the direction of the arrow C in Figure 5.
With reference to Figure 1, in general layout terms, the preferred embodiment of the apparatus of the 3 0 present invention includes an unscrambler assembly 5 which receives bottles from a hopper 3 and delivers the bottles onto a feed conveyer 7 so that the bottles move in nose to tail relationship along the feed conveyer to an in-feed station 9 of an assembly, generally identified by the 3 5 numeral 11. As is described in more detail hereinafter, the bottles are moved in a circular path from the in-feed station 9 to a coating station, generally identified by the Printed from Mimosa 12/12/2000 13:57:42 page -9- numeral 13, and are spray coated at that station, and the coated bottles are moved from the coating station 13 to an out-feed station 15. At the out-feed station 15 the coated bottles are detached from the assembly and are transferred 5 via a transfer conveyer 17 through a curing oven 19 and are cured in that oven.
The assembly 11 includes a turret 21 that is arranged to rotate about a vertical axis.
The assembly 11 further includes a plurality of support members (not shown) that are mounted to the turret in a circular array and are arranged to support bottles horizontally as the turret 21 rotates and moves the bottles 15 in a circular path from the in-feed station 9 to the coating station 13 and then to the out-feed station 15.
The apparatus includes a cartridge loading assembly at the in-feed station which receives bottles from 20 the feed conveyor 7 and locates bottles on the support members at the in-feed station 9.
Each support member includes a spindle (not shown) that can rotate about its axis and a collet (not 25 shown) which is adapted to retain the necks of bottles by a friction fit.
A turret drive (not shown) rotates the turret 21 in a series of indexed steps which positions each spindle 3 0 successively at the coating station 13.
With the above-described arrangement, when a support member carrying a bottle is at the coating station 13, a spindle drive rotates the spindle and the bottle 35 supported by the spindle while the bottle is being sprayed by the coating formulation. This arrangement makes it possible to use a relatively confined spray pattern that Printed from Mimosa 12/12/2000 13:57:42 page -10- minimises coating formulation wastage. This arrangement also makes it possible to use fixed sprays at the coating station 13, while ensuring substantially complete coverage of exposed surfaces of bottles with the coating 5 formulation.
The coating formulation may be any suitable formulation. In addition, the spray coating technology may be any suitable technology including, by way of example, 10 electrostatic spray coating technology.
The spindle drives are also arranged to rotate the spindles and bottles thereon for a short distance after the spindles are moved from the coating station 13.
With reference to Figures 2 to 6, the coating station 13 is arranged to coat each bottle in two separate steps. In the first step exposed surfaces of the neck and base of a bottle are spray coated with suitable coating 20 formulation and in the second step exposed surfaces of the body of the bottle are spray coated with the formulation.
The coating station 13 includes a neck/base spray coating assembly, generally identified by the numeral 27, 25 and a body coating assembly, generally identified by the numeral 29. The body coating assembly 29 is downstream of eth neck/base coating assembly 29 in the direction of' movement of the bottles along the circular path from the in-feed station 9 to the out-feed station 23. The indexed 30 movement of the turret drive is such that bottles are stationary (in the sense of movement along the circular path) at each assembly 27, 29 and the spindle drives of the support members rotate the bottles around their longitudinal axes while bottles are being sprayed at each 35 assembly 27, 29.
With reference to Figures 3 and 4, the neck/base Printed from Mimosa 12/12/2000 13:57:42 page -11- WO 99/65613 PCT/AU99/00498 coating assembly 27 includes an upright post 35, an arm 33 extending from an upper end of the post 35, and a spray head 37 with a spray nozzle 31 pivotally mounted to the arm 33. The arrangement is such that the nozzle 31 is 5 positioned immediately above the neck of a bottle 57 located at the neck/base coating assembly.
Similarly, the neck/base coating assembly 27 includes an upright post 9, an arm 41 extending from an 10 upper end of the post 39, and a spray head 43 with a spray nozzle 45 pivotally mounted to the arm 41. The arrangement is such that the nozzle 45 is positioned immediately adjacent the base of a bottle 57 located at the neck/base coating assembly.
With reference to Figures 5 and 6, the body coating assembly 29 includes an upright post 47, a relatively short arm 49 extending from an upper end of the post 47, and a spray head 51 with a spray nozzle 53 20 pivotally mounted to the arm 49. The arrangement is such that the nozzle 53 is positioned immediately above the body of a bottle 57 located at the body coating assembly.
The spacing between the coating station 13 and 25 the out-feed station 15 is selected to enable sufficient time for evaporation of solvent of the coating formulation and for an increase in viscosity of the coating component of the coating formulation to facilitate transfer of coated bottles to the curing oven 19 with minimal loss of coating.
At the out-feed station 15 the coated bottles are detached from the support members and are transferred onto a support assembly which includes a series of cradles 23 that support the coated bottles on their sides on the 35 transfer conveyor 17. The coated bottles are detached from the support members by means of a vacuum suction cup assembly.
Printed from Mimosa 12/12/2000 13:57:42 page -12- The curing oven 19 is constructed so that the coated bottles move in a serpentine path, with a series of vertical sections interconnected by horizontal sections, 5 between an inlet at one end of the oven and an outlet at the other end. As a consequence, the oven is a relatively compact construction.
The bottles in the curing oven 19 are cured at a 10 temperature of at least 60°C for a residence time of 10-15 minutes.
The applicant has found in pilot plant work operating the above-described apparatus in accordance with 15 the method of the present invention that wastage of the coating formulation was less that 20%, more typically less than 15%. This is a significant improvement over that achieved with the known method and apparatus described above.
Many modifications may be made to the preferred embodiment of the present invention described above without departing from the spirit and scope of the present invention.
Printed from Mimosa 12/12/2000 13:57:42 page -13-
Claims (13)
1. A method of coating bottles made from a plastics material with a coating formulation, which method includes the steps of: a) positioning bottles on support members which engage the bottles at an in-feed station; b) successively moving each bottle along a path to a coating station; c) stopping the movement of the support members along the path when a support member carrying a bottle reaches the coating station; d) whilst each bottle is at the coating station, rotating each bottle about its longitudinal axis and simultaneously spray coating the exposed outside surface of the bottle; e) moving the support members and coated bottles thereon from the coating station to an out-feed station; f) detaching the coated bottles from the support members at the out-feed station; g) moving the support members from the out-feed CO S station to the in-feed station; and w§b • & \J/ h) transferring the coated bottles to a curing oven : - (1) es ry'Jj ca . and curing the coatings in the oven.
2. The method defined in claim 1, further including spray coating exposed surfaces of each bottle at the coating station in two steps, wherein the first step includes spray coating exposed surfaces of the neck and base and the second step includes spray coating exposed surfaces of the body of the bottle.
3. The method defined in claim 1 or claim 2, further including moving the bottles along the path in indexed steps whereby when a support member carrying a bottle stops at the coating station, simultaneously: (i) a support member carrying a coated bottle stops at the out-feed station; and (ii) a support member from which a coated bottle has been detached stops at the in-feed station.
4. The method defined in any one of the preceding claims, further including transferring the coated bottles from the support members to a separate support assembly and moving the support assembly into the curing oven. Apparatus for spray coating bottles made from a plastics material with a coating formulation, which apparatus includes: in ■ (a) a coating station which includes spray coating O means for spraying the coating formulation onto P rJ 0'^ ej? tl exposed surfaces of bottles, E- CXi ^ £ E B a ^ (t\ (k) an assembly for supporting a plurality of bottles o Hit!! and moving the bottles in a path from an in-feed station to the coating station and from the coating - 14 - station to an out-feed station, the assembly including a plurality of support members and a drive means for moving the bottles along the path from the in-feed to the out-feed station with each support member being adapted to hold a bottle and to rotate the bottle about its longitudinal axis when the bottle is at the coating station to facilitate spray coating of the exposed surface of the bottle, and the drive means being adapted to stop the movement of the bottles along the path when a bottle reaches the coating (c) a transfer means for detaching coated bottles from the support members at the out-feed station and for transferring the coated bottles to a curing oven. £
5. The apparatus defined in claim 5, wherein the coating station includes: (i) a spray coating assembly for spray coating the neck and base regions of the bottle; and (ii) a separate spray coating assembly for spray coating the body of the bottle that is downstream of the neck/base spray coating assembly in the direction of movement of bottle along the path from the in-feed to the out-feed stations.
6.P'iSJ cr» >'
7. The apparatus defined in claim 5 or claim 6, wherein y 'Z, « ^ cxj the drive means is adapted to move the support members and ,-)■ © bottles carried thereon in a series of indexed steps 2 o --(/j 0 n,] n whereby in use when one of the support members stops at the e (Sgf coating station, simultaneously, a support member carrying a coated bottle stops at the out-feed station and a support member from which a coated bottle has been detached stops at the in-feed station.
8. The apparatus defined in any one of claims 5 to 7, wherein the assembly for supporting and moving the bottles includes a turret that is rotatable about a vertical axis.
9. The apparatus defined in claim 8, wherein the support members are mounted to the turret so as to support bottles to move in a circular path.
10. The apparatus defined in claim 9, wherein the support members are adapted to support the bottles horizontally.
11. The apparatus defined in any one of claims 5 to 10, wherein each support member includes a spindle that is rotatable about its axis and a collet for retaining a bottle to the support member in a horizontal position.
12. A method of coating bottles substantially as herein described with reference to the accompanying drawings.
13. Apparatus for coating bottles substantially as herein described with reference to the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPP4173A AUPP417398A0 (en) | 1998-06-18 | 1998-06-18 | Method and apparatus for coating bottles |
| PCT/AU1999/000498 WO1999065613A1 (en) | 1998-06-18 | 1999-06-18 | Method and apparatus for coating bottles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ508784A true NZ508784A (en) | 2003-07-25 |
Family
ID=3808418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ508784A NZ508784A (en) | 1998-06-18 | 1999-06-18 | Method and apparatus for coating bottles |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AUPP417398A0 (en) |
| CA (1) | CA2334714A1 (en) |
| NZ (1) | NZ508784A (en) |
| WO (1) | WO1999065613A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364278A (en) * | 2011-10-26 | 2012-02-29 | 南京长江工业炉科技有限公司 | Gas cylinder wound continuous curing furnace |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10004403A1 (en) * | 2000-02-02 | 2001-08-16 | Schmalbach Lubeca | Method for coating bottom of cans with fluid coating uses spray head to spray coating first with one angle of spray axis onto outer section and then with second axis onto further inner radial area of can bottom |
| ITRM20020453A1 (en) * | 2002-09-10 | 2004-03-11 | Sipa Spa | CONTAINER PAINTING PROCESS AND PLANT. |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5022840A (en) * | 1973-06-28 | 1975-03-11 | ||
| JPS5324867B2 (en) * | 1973-10-26 | 1978-07-24 | ||
| GB1504337A (en) * | 1974-05-14 | 1978-03-22 | Toyo Ink Mfg Co | Spray-coating method |
| DE3024564A1 (en) * | 1980-06-28 | 1982-02-04 | Veba-Glas Ag, 4300 Essen | METHOD AND DEVICE FOR COATING THE EXTERNAL SURFACES OF GLASS BOTTLES |
| EP0142583B1 (en) * | 1983-11-14 | 1987-05-20 | Kyowa Denki Kagaku K.K. | Process and apparatus for coating the surfaces of containers with coating material |
| FR2656238B1 (en) * | 1989-12-26 | 1994-04-08 | Chaudronnerie Tolerie Argonne | POLISHING MACHINE FOR GLASS ARTICLES. |
-
1998
- 1998-06-18 AU AUPP4173A patent/AUPP417398A0/en not_active Abandoned
-
1999
- 1999-06-18 NZ NZ508784A patent/NZ508784A/en unknown
- 1999-06-18 CA CA002334714A patent/CA2334714A1/en not_active Abandoned
- 1999-06-18 WO PCT/AU1999/000498 patent/WO1999065613A1/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364278A (en) * | 2011-10-26 | 2012-02-29 | 南京长江工业炉科技有限公司 | Gas cylinder wound continuous curing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2334714A1 (en) | 1999-12-23 |
| WO1999065613A1 (en) | 1999-12-23 |
| AUPP417398A0 (en) | 1998-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RENW | Renewal (renewal fees accepted) | ||
| PSEA | Patent sealed |