AU668928B2 - Improved methods of and apparatus for forming composite panels - Google Patents
Improved methods of and apparatus for forming composite panels Download PDFInfo
- Publication number
- AU668928B2 AU668928B2 AU38322/93A AU3832293A AU668928B2 AU 668928 B2 AU668928 B2 AU 668928B2 AU 38322/93 A AU38322/93 A AU 38322/93A AU 3832293 A AU3832293 A AU 3832293A AU 668928 B2 AU668928 B2 AU 668928B2
- Authority
- AU
- Australia
- Prior art keywords
- spreader bar
- elongate
- sheet
- insulating material
- bar
- 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
Links
- 238000000034 method Methods 0.000 title claims description 22
- 239000002131 composite material Substances 0.000 title claims description 18
- 239000007767 bonding agent Substances 0.000 claims description 34
- 239000011810 insulating material Substances 0.000 claims description 23
- 238000003892 spreading Methods 0.000 claims description 20
- 230000007480 spreading Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 15
- 239000004793 Polystyrene Substances 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 229920002223 polystyrene Polymers 0.000 claims description 8
- 229920002635 polyurethane Polymers 0.000 claims description 8
- 239000004814 polyurethane Substances 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 7
- 230000008093 supporting effect Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000011162 core material Substances 0.000 claims 3
- 101100289061 Drosophila melanogaster lili gene Proteins 0.000 claims 1
- 239000000376 reactant Substances 0.000 description 12
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
"IMPROVED METHODS OF AND APPARATUS FOR FORMING COMPOSITE
PANELS"
This invention has particular application to apply--'ng treatment tc a surface such as for applying a bonding agent for forming composite panels of the type having a foamed plastics core and metal skins, hereinafter called insulatin~g panels, and for illustrative purposes particular reference will be made hereinafter to such application. However it will be understood that the apparatus and methods of the present invention could be ut-llised in other applications as will be apparent and such as f or laminating plywood or other composite panels or strips or spreading material over a surf ace.
A significant industry has been built around the manufacture of insulating panels through the development of economical and effective means of bonding the metal skins to P core which is typically a polystyrene core. The method involves the separate application of the reactive agents of a foam polyurethane material to the surface of the polystyrene or metal sheet to be bonded and subsequently mixing the reactant parts on the surface prior to forcing the core and the skin together under pressure to prevent foaming of the polyurethane which serves as an effective bonding agent between the polystyrene core and the metal skin.
Basically two types of mixing p rocedures have been developed, one involving the use of a reciprocating brush or 2 brushes which extend across the surface to mix and spread the reactants and a second method in which a disposable slipper is oscillated on the surface to mix the reactant globules deposited onto the surface and at the same time spread them over the surface. The mixing occurs as the elements pass through a mining station at an appropriate speed to suit the reaction time of the reagents and the configuration of the apparatus and hereinafter referred to as the passage speed.
It must be understood that the development of such a joining method facilitated cost effective manufacture of composite insulating panels as such liquid reactants within a few seconds of mixing normally foam to occupy a volume of some fifty times their original volume. Thus the development of a method where the fast reaction time did not result in frequent disposal of expensive mixing means and spreading means and the like provided the significant breakthrough 4 ,necessary for cost effective production.
There are however some disadvantages associated with the currently utilised methods of applying the liquid reactants to the surface of the elements of the composite insulating Spanel. In particular it is not practical to utilise the existing technology for applying such bonding agents to a non-planar surface such as ribbed roofing panels.
Furthermore the relative complexity of the currentl.y utilised methods add to the size or cost of the machinery required to produce composite insulating panels.
I 3 The present invention aims to alleviate at least one of the abovementioned disadvantages and, in one aspect, aims to provide a method of applying a treatment to a surface. This invention also aims to provide an improved method of end apparatus for forming composite insulating panels which will be reliable and efficient in use. Other objects and advantages of this invention hereinafter become apparent.
With the foregoing and other objects in view, this invention in one aspect resides broadly in a method of constructing a laminated insulating panel including: providing a sheet of insulating material and a complementary metal skin for bonding thereto; j ,moving said sheet of insulating material past an elongate spreader bar; depositing a liquid bonding agent on the upper surface of said sheet of insulating material and bringing the metal skin and said upper surface together to form said laminated insulating panel, the method being characterised in 'chat the liquid bonding agent is distributed on said upper surface by said elongate spreader bar and said elongate spreader bar extends across said upper surface and substantially transverse to the direction of movement of said sheet of insulating material and is rotated about its longitudinal axis such that the liquid bonding agent puddles and mixes downstream between the elongate spreader bar and said upper 1 4 surface.
In another aspect this invention resides broadly in a method of constructing a laminated insulating panel including: providing a sheet of insulating material and a complementary metal skin for bonding thereto; moving said sheet or insulating material past an elongate spreader bar; depositing a two-part liquid bonding agent on the upper surface of said sheet of insulating material and bringing the metal skin and said upper surface together to form said laminated insulating panel, the method being characterised in j that the liquid bonding agent is distributed on said upper surface by said elongate spreader bar and said elongate spreader bar extends across said upper surface and substantially transverse to the direction of movement of said sheet of insulating material and is rotated about its *longitudinal axis such that the liquid bonding agent puddles and mixes against the upstream face of said spreader bar and 20 passes downstream between the elongate spreader bar and said upper surface, the peripheral velocity of the spreader bar being different to the velocity of said upper surface.
Preferably the bonding agent is deposited directly onto a surface to be bonded upstream of the spreader bar whereby it is engaged by the elongate spreader bar as the surface moves through the laminating station. Alternatively the I treatment may be deposited indirectly onto the surface to be -7 I _JI j bonded via the rotating spreader bar. Rotation of the spreader bar is provided to distribute the treatment or bonding agent across the surface and/or mix bonding agent reagents.
Preferably the elongate spreader bar is rotated by independent drive means at a speed at which its peripheral velocity is different to the passage speed of the surface to be treated. It is also preferred that the spreader bar be rotated in a direction causing the adjacent surfaces of the spreader bar and the surface to be treated to move in the same direction. However where suitable, the spreader bar may *be rotated in either direction. The drive means for rotating the spreader bar may have speed regulation means whereby the speed rotation of the elongate spreader bar may be S 15 selectively varied to suit the operating conditions. It is preferred that the elongate spreader bar be rotated whereby the peripheral speed of the elongate spreader bar is greater .i than the passage speed. It is also preferred that the distance between the elongate spreader and the surface to be 20 bonded is such that interaction therebetween will prevent e buildup of reactive bonding agent on the elongate spreader and as a result effectively provide a "self cleaning" action.
The elongate spreader bar may have a square or multi sided cross-section but preferably it is in the form of round-sectinned bar. The round-section spreader bar may be of constant cross-sectional configuration throughout its length whereby it may be adapted for spreading bonding agent t AiL.
onto a substantially planar surface or the elongate spreader bar may be provided with collar-like protrusions such that the surface of the elongate spreader bar substantially conforms to the profile of a profiled surface. It is also preferred that the elongate spreader bar is supported in slightly spaced relationship to the surface to be treated such that a regulated amoun, of bonding agent or treatment may be applied to a surface to be treated. Scraping means may be utilised to remove excess treatment from the elongate spreader bar but preferably the elongate spreader bar is spaced sufficiently close to the surface being bonded that the spreader is maintained operatively clean. Suitably the spreader bar extends across the surface at right angles to the direction of movement through the treatment station but of it may extend across at an acute or oblique angle if desired.
The bonding agent may be any suitable bonding agent and in the case of a bonding agent utilised for composite insulation panels having a foam core the bonding agent is 20 preferably a two-part liquid polyurethane polymer. Suitably the spreader bar is so positioned relative to the surface to be bonded as to puddle the separately deposited bonding reagents upstream of the spreader bar and intermix the reagents in the puddle prior to mixed bonding agent passing downstream between the elongate spreader bar and the surface to be bonded.
In a preferred embodiment of the invention the spreading o c .rcr -iL 7 means is located at a fixed spreading station and the surface to be treated is moved through the spreading station at the desired nassage speed. However the surface to be treated could be disposed at a fixed treatment station and the spreading means could be supported on rail means or the like such that the treatment station moves along the surface.
Accordingly the defined movement through the treatment station is to embrace a relative movement between the surface and the tr ;.tment station. If desired the spreading means may be adapted to reciprocate or vibrate in addition to rotating.
In a further aspect this invention resides broadly in S; apparatus for constructing L laminated insulating panel *including: conveyor means for conveying a sheet of insulating material through a laminating station; an elongate spreader bar c.dapted ti extend across the upper surface of and substantially transverse to the direction of movement of said sheet of insulating material; 20 drive means for rotating said elongate spreadez bar about its longitudinal axis such that the peripheral velocity of the spreader bar is different to the velocity of said upper surface; and supporting means for operatively supporting the elongate spreader bar in close spaced relationship to said upper i I
I
surface of said insulating material whereby liquid bonding agent deposited onto said upper surface puddles and mixes against the upstream face of said spreader bar and passes downstream between the elongate spreader bar and said upper surface.
In a further aspect this invention resides broadly in composite insulating panel forming apparatus including:a laminating station wherein metal sheet is pressed onto and bonded to the upper face of a foamed plastics core, and spreading apparatus for spreading a bonding agent onto said upper surface of the foamed plastics core, the spreading apparatus being a selected one of variations defined above.
Preferably the composite panel forming apparatus includes mounting means for mounting coils of steel stock and having roll forming means for roll forming the stock from at least one coil to a selected profile prior to continuously S feeding the stock through a bonding path wherein the stock from the coils is bonded to opposite sides of the core, which is preferably a polystyrene core. The bonding agent is a polyurethane and preferably a two-part foamed polyurethane which is deposited onto the upper surfaces to be bonded. The two reagent parts are deposited on at least the surface of the core to be bonded to the profiled stock and are suitably spread by a selected one of variations of spreading apparatus defined above. Suitably the spreading apparatus includes a roll-forming station for profiling the top sheet to be I b..
9 laminated and the roll-forming station is disposed above the bonding path and/or the station at which the skins are maintained in contact with the core while the bonding agent becomes effective.
In order that this invention may be more readily understood and put into practical effect, reference will now be made to the accompanying drawings which illustrate a typical embodiment of the present invention and wherein:- FIG. 1 is a diagrammatic illustration of a typical application of the present invention; FIG. 2 is a diagrammatic illustration of the adhesive application method; FIG. 3 is a side view of the head portion of a preferred form of panel forming apparatus; FIG. 4 is a side view of the tail portion of the panel forming apparatus; FIG. 5 is a side view of the adaptor assembly for forming ribbed composite panels; FIG 6 is an end view illustrating the profile of a t ribbed panel and the complementary spreader bar, and S-FIG. 7 is an end view of complementary panel edge details, shown in separate panel portions for reference.
As shown in FIG. 1 an insulated panel 10 may be formed by bonding a polystyrene core 11 between top and bottom metal skins 12 and 13 respectively. In this instance the top skin 12 is a ribbed skin and accordingly the core panel 11 is *~l ii_ i ii I i i p/pl provided with upstands 14 adapted to nest within the deep ribs 15 of the top skin 12. As is normal practice the skins 12 and 13 are bonded to the polystyrene core 11 by application of a foamed polyurethane bonding agent as illustrated at 16.
The polyurethane bonding agent is deposited separately by a drip system 9 in the two reactant parts at 18 on the bottom skin 13 and on the polystyrene core 11 upstream of the mixing and spreading means generally indicated by the numeral 20, whereby upon travel thereto the two-part reactants are mixed and spread across the surface to be bonded. The two reactant parts are indicated in Fig. 1 by the circles and crosses and/ or by the letters A and B.
The reactants A and B are deposited continuously in equal arrays of globules or in the appropriate mixing proportions onto the upper surfaces from respective drip feed mechanisms (not shown). The deposited parts A and B advance towards the spreading means 20 which in this embodiment includes respective elongate rotatable spreader bars, namely a plain spreader bar 21 and a waisted spreader bar 22. The e latter is waisted at points coincident with the upstands 14 so that the outer surfaces of the elongate spreader bar 22 are spaced substantially equidistantly from the upper surface of the core panel 11.
The spreader bar 21 is suitably an elongate metal bar of about 15mm diameter while the spreader bar 22 has waisted *.,gi 11 intermediate portions 28 of approximately 15mm diameter and main cylindrical portions 29 which are of such diameter as to extend into the valleys of the core 11 between the upstands 14 and provide a substantially equal panel clearance across the width of the core 11.
The spreader bars 21 and 22 are rotated by respective motors 23 and 24 in an anti-clockwise direction as illustrated at 25 such that their peripheral movement adjacent the skin 13 or the core 11 are in the direction of movement of the core 11 and skins 13 as indicated by the arrow 26. The motors 23 and 24 may be speed adjustable motors such that during production the appropriate speed and/or direction of rotation of the spreaders 21 and 22 and their spacing from the adjacent surface may be adjusted to achieve the desired result.
The reactants A and B are drip fed onto the upper surface of the core 11 in the head portion 31 of the panel forming apparatus 30 in known manner such that as the core 11 advances beneath the spreader bar 22 the reactants puddle-up in front of the bar 22, as illustrated at 27, wherein they are mixed by rotation of the spreader bar and spread across e* the surfaces to be bonded.
The bars 21 and 22 are height adjustably mounted relative to the core and skins such that the distance between the bars 21 and 22 and the surfaces on which the bonding agent is placed may be adjusted such that a substantially s! I'M (L I i 'I r 12 even spread of mixed reactants 16 is formed across the respective surfaces of the lower skin 13 and the core 11.
The core 11 and upper and lower skins 12/13 then pass to the compressing station 32 in the tail portion 34 of the panel forming apparatus 30 whereupon they are maintained compressed for sufficient time to effect bonding.
Alternatively the spreaders may be formed of a suitable weight and be unrestrained in the vertical direction whereby they are free to operate at an appropriate clearance.
Furthermore the spreaders may be formed with a surface pattern which assists mixing, spreading and or cleaning of the bonding agent. For example the surface may be knurled, plain or ribbed longitudinally or circumferentially. If desired the bonding agent on the lower skin may be spread with conventional spreading and mixing means.
In a preferred embodiment the lower skin 12 is a substantially plain skin fed from a roll of stock 33 at the head portion of the apparatus 30, through a roll-form station r if required, and the top skin 12 is formed from lengths of stock roofing or on-site formed profiled sheets which are fed .i successively onto and bonded to the core 11ii. This arrangement enables structural roofing panels to be formed 8 -which when erected have a conventional appearance and which take advantage of the nurmal overlap sealing arrangements provided on such stock metal roofing sheets.
As illustrated in Fig. 3 the head portion of the panel 1*, 13 forming apparatus 30 includes opposed feed rollers 35 for feeding the polystyrene foam core and the bcttom skin along th bed 36 of apparatus 30, the adhesive drip system 9 and the waisted spreader bar 22. The tail portion 34 includes plain rollers 36 fixed rotatably to the bed 37 to support the formed composite panel 40 and upper plain compression rollers 38 fixed to a top platen 39 which may be adjusted vertically to suit the panel 40 being formed and driven to assist movement of the composite panel through the apparatus When the composite panel being formed includes a ribbed top sheet, the top platen 39 is lifted and gapped rollers 41 are installed therebeneath utilising adaptors 43 as illustrated in Fig. 5. The adaptors 43 include opposed leading pivot links 45 suspended from pivots 46 at opposite sides of the top platen 39 and supporting floating drive transfer rollers 47 which frictionally engage the top drive rollers 38 and the gapped rollers 41 to rotate the gapped rollers in the same direction as the driving rollers 38. The gapped rollers include axially aligned but spaced roller portions having width to suit the flat tray parts ,intermediate the ribs of the top panel.
The tail portion 34 also includes edge roller stations .4
C
49 adapted for engaging either the top or bottom skin such as for forming tongue and groove formations 50 on the panel skin edges as illustrated in Fig. 7. In this embodiment it will be seen that the overlapping edge rib 51 of the upper skin 12 Li 14 includes a capillery groove 52 in known manner and the overlapped edge rib 53 at the opposite side of the panel is plain. Furthermore the lower skin 13 is edge rolled at station 49 to form a spigot rib 55 formed in a cutaway portion 56 of the core 11 and a socket rib 57 having a divergent receiving groove 59 for the spigot rib 55. This arrangement has the advantage that complementary panels may be joined in edge overlapping relationship by firstly engaging the rib 51 over of an elevated panel the rib 53 of an installed panel and then rotating the upper panel about the engaged ribs to bring the rib 55 into the groove 59, providing simple installation. Furthermore the configuration of the ribs provides protection against damage during transport to an installation, It will of course be realised that the above has been i given only by way of illustrative example of the invention and that all such modifications and variations thereto as would be apparent to persons skilled in the art are deemed to fall within the broad scope and ambit of the invention as is defined in the appended claims.
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Claims (9)
- 2. A method of constructing a laminated insulating panel including: providing a sheet of insulating material and a complementary metal skin for bonding thereto; 16 moving said sheet of insulating material past an elongate spreader bar; depositing a two-part liquid bonding agent on the upper surface of said sheet of insulating material and bringing the metal skin and said upper surface together to form said laminated insulating panel, the method being characterised in that the liquid bonding agent is distributed on said upper surface by said elongate spreader bar and said elongate spreader bar extends across said upper surface and substantially transverse to the direction of movement of said sheet of insulating material and is rotated about its longitudinal axis such that the liquid bonding agent puddles and mixes against the upstream face of said spreader bar and passes downstream between the elongate spreader bar and said upper surface, the peripheral velocity of the spreader bar being different to the velocity of said upper surface.
- 3. A method as claimed in claim 1 or claim 2, wherein the sheet of insulating material has a regular non-planar transverse profile and the elongate spreader bar has a complementary profile.
- 4. A method as claimed in any one of the preceding claims, wherein the periphery of the spreader bar adjacent said upper surface moves in the same direction as said sheet of insulating material and the peripheral speed of the elongate i1. Jf 2 17 spreader bar is greater than the speed of movement of said sheet of insulating material past the elongate spreader bar. A method as claimed in any one of the preceding claims, wherein the elongate spreader bar is supported in close spaced relationship to said upper surface.
- 6. A method as claimed in any one of the preceding claims, wherein said sheet of insulating material is a polystyrene insulating core material and the liquid bonding agent is a ,0 .two-part liquid polyurethane polymer.
- 7. Apparatus for constructing a laminated insulating panel including: conveyor means for conveying a sheet of insulating material through a laminating station; an elongate spreader bar adapted to extend across the upper surface of and substantially transverse to the direction of movement of said sheet of insulating material; drive means for rotating said elongate spreader bar e about its longitudinal axis such that the peripheral velocity of the spreader bar is greater than the velocity of said upper surface; and supporting means for operatively supporting the elongate spreader bar in close spaced relationship to said upper surface of said insulating material whereby liquid bonding p~ _LI: _li: lili I.II._~LliL~-~ 18 agent deposited onto said upper surface puddles and mixes against the upstream face of said spreader bar and passes downstream between the elongate spreader bar and said upper surface.
- 8. Apparatus as claimed in claim 7, wherein said drive means is provided with speed regulation means whereby the speed of rotation of the elongate spreader bar may be selectively varied.
- 9. Apparatus as claimed in claim 7 or claim 8, wherein said elongate spreader bar includes a round sectioned bar provided with collar-like protrusions and adapted to complement the profile of a regular non-planar upper surface of a sheet of insulating material. Composite insulating panel forming apparatus including:- a laminating statirin wherein metal sheet is pressed onto and bonded to the upper face of a foamed plastics core, and spreading apparatus for spreading a bonding agent onto said upper surface of the foamed plastics core, said spreading apparatus being as defined in any one of claims 7 to 9.
- 11. Composite insulating panel forming apparatus as claimed in claim 10, including mounting means for mounting a coil of *I Sc rr i- 19 steel stock and roll forming means for roll forming the stock to a selected profile prior t- continuously feeding the stock to said laminating station.
- 12. Composite insulating panel forming apparatus substantially as hereinbefore described with reference to the accompanying drawings. DATED THIS Twenty-sixth DAY OF March, 1996. NATIONAL PANELS PTY LTD BY PIZZEYS S So 5 *Sr 4t 1 i C A .Z&V7- Spre adin~g appr-atus for sprsading a trea.:nent onto a sur~ace, irncJludna:- an elongs-t spreadr bar; drive mneans~ for rc-.atijng the e-Iongate soreader bar a.-out spporzing menrs op erativel y support-ing the elon-ate spreader bar on or adjacent a ufae
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU38322/93A AU668928B2 (en) | 1992-04-27 | 1993-04-27 | Improved methods of and apparatus for forming composite panels |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPL2123 | 1992-04-27 | ||
| AUPL212392 | 1992-04-27 | ||
| AU38322/93A AU668928B2 (en) | 1992-04-27 | 1993-04-27 | Improved methods of and apparatus for forming composite panels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU3832293A AU3832293A (en) | 1993-10-28 |
| AU668928B2 true AU668928B2 (en) | 1996-05-23 |
Family
ID=25624328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU38322/93A Ceased AU668928B2 (en) | 1992-04-27 | 1993-04-27 | Improved methods of and apparatus for forming composite panels |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU668928B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1500466A (en) * | 1965-12-08 | 1968-06-13 | Dunlop Rubber Australia Limited | Coating method and apparatus for use therein |
| DE3034182A1 (en) * | 1980-06-23 | 1982-01-14 | Jesus Castelldefels Barcelona Barberan Albiac | MACHINE FOR COATING PROFILE BARS AND THE LIKE |
-
1993
- 1993-04-27 AU AU38322/93A patent/AU668928B2/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1500466A (en) * | 1965-12-08 | 1968-06-13 | Dunlop Rubber Australia Limited | Coating method and apparatus for use therein |
| AU431353B2 (en) * | 1966-12-05 | 1968-12-12 | Raymond Andre Labombard | Apparatus and method for applying high viscosity coatings |
| DE3034182A1 (en) * | 1980-06-23 | 1982-01-14 | Jesus Castelldefels Barcelona Barberan Albiac | MACHINE FOR COATING PROFILE BARS AND THE LIKE |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3832293A (en) | 1993-10-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |