AU4386001A - Method of heat forming solid surface veneer - Google Patents
Method of heat forming solid surface veneer Download PDFInfo
- Publication number
- AU4386001A AU4386001A AU43860/01A AU4386001A AU4386001A AU 4386001 A AU4386001 A AU 4386001A AU 43860/01 A AU43860/01 A AU 43860/01A AU 4386001 A AU4386001 A AU 4386001A AU 4386001 A AU4386001 A AU 4386001A
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- AU
- Australia
- Prior art keywords
- solid surface
- surface material
- platen
- substrate
- heating
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- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Description
Regulation 3.2
AUSTRALIA
PATENTS ACT 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Applicant: Norford Industries Pty Ltd Address for Service: Invention Title: WALSH ASSOCIATES PATENT AND TRADE MARK ATTORNEYS P.O. Box 4306 PENRITH PLAZA 2750 NEW SOUTH WALES
AUSTRALIA
Method for Heat Formi~g- Solid Surface Veneer The following statements i&full description of this. invention, includingithe-best meto of promng it kont the applicant: tl METHOD FOR HEAT FORMING SOLID SURFACE VENEER BACKGROUND OF THE INVENTION The present invention relates to a process for heat bending thin sheet materials and in particular solid surface materials such as methyl methacrylate and copolymers thereof More particularly, the invention relates to a method of heat forming by a process commonly known as thermoforming such thin sheet materials for use alone or in apposition with a substrate.
PRIOR ART oooo :Introducing a profile such as a curve or bend to a solid surface material is generally carried out according to two techniques, the first being post forming and the second thermoforming. The former method relates to the use of heat applied locally to a solid surface material to enable a curve or bend to be introduced. After a localised area which may be a region at or near the edge of a sheet is heated, it is then physically bent by a press or sandwich mould before it cools. Although this technique has met with some success when used with some solid surface materials, it has been found that when acrylics are bent in this way, serious problems occur in the material such as crazing, cracking, blanching and lowering of impact resistance.
In the worse case, acrylic solid surface veneer material curved by post forming can simply break away in the region of the bend. This renders the finish in the material commercially unacceptable.
Thermoforming is a term generally applied to the process of heat forming solid surface materials whereby heat is evenly distributed over the whole surface area of the material even though bending is to take place in a relatively localised area of the sheet. One example of this process is that embodied in the applicant's own United States patent 5,236,658 which relates to a process and apparatus for heat forming of materials which have a thickness within or near the range of 8 This patent is directed to the heat formation of solid surface materials such as Corian generically referred to as methyl methacrylate. Solid surface materials are by nature brittle and do not behave well under bending stresses. They nevertheless have high impact resistance and are very durable in such applications as kitchen bench tops and wall claddings. It is desirable for solid surface materials to be applied and finished without joins and with smoothly radiused curves. The technique involved in bending Corian in the manner described in US Patent 5,236,658 provides these curves and eliminates joins but this patent is specifically directed to the bending of thick sheets of thickness close to or between the range 8mm and 20mm which range is regarded in the industry as thick. Up until now, the o.
industry has experienced significant problems in bending thinner but brittle materials such as solid surface veneer (acrylic) material for the reasons indicated above with reference to post forming.
According to the prior art techniques, attempts were made to bend thin solid surface *ooveneer material but these produced poor results. Post forming was tried followed by thermoforming.
In the latter method, the thin solid surface veneer was heated in an oven using heating elements spaced apart from the surface of the sheets but it cracked at the bends which were formed in the material subsequent to heating. The material also suffered from blanching and blistering rendering this method of forming solid surface veneer unacceptable, to find a method which would produce commercially
I
acceptable product. Thus, up until now it was not thought possible to bend thin solid surface material free of the defects previously experienced.
THE INVENTION The inventor found that instead of an oven, if heating platens were placed in contact with or a short distance from thin solid surface material and the material then heated according to a 25 predetermined time temperature regime, solid surface veneer could be formed with curves of a given radius without the problems of o cracking, blanching, blistering, and reduction in impact resistance. The optimum time/temperature relationships were arrived at after trials and experimentation.
The present invention seeks to overcome the problems associated with bending thin solid surface materials such as acrylics such that they are rendered acceptable to the consumer market. Radiused curves in thethin acrylic materials have been achieved in the past by post forming and thermo forming with poor quality and indeed commercially unacceptable results. It is now possible as a result of the methodology to be described below to successfully thermoform thin solid surface veneer absent the prior art problems.
In one broad form the invention comprises: a method for forming a curve or curves in a solid surface material and applying the so formed material to a substrate, the method comprising the steps of: a) providing a sheet of solid surface material having a thickness within the range of 1.4 to 5.9 mm; b) preparing a solid substrate material to receive the sheet of solid surface material; c) placing the solid substrate on a forming mold located in or on a forming apparatus including a heating station including heating platens and a vacuuming forming station including a mold and a sealing envelope thereabout; d) placing the solid surface material in contact with a heating platen or very near to the platen and heating the platen to a predetermined temperature for a predetermined period so that heat emanating from said platen is distributed substantially uniformly over at least one side of the sheet and throughout the full thickness of the sheet; rie) after the predetermined healing period has expired relocating the solid surface material onto said solid substrate; o before cooling sandwiching the solid surface material sheet between an upper mold element and said substrate such that the solid surface material sheet conforms to the profile of an opposing surface of the substrate; and g) forming a solid surface material and substrate composite with the solid surface material sheet and the substrate.
Preferably, the method comprises the further step of sealing the mold station with i the sealing envelope and applying a vacuum to the inside of the sealing envelope such that a free edge or edges of the solid surface material conforms to the profile of a corresponding free edge of the substrate. Preferably, the sealing platen/s contact/s the solid surface material during the heating step and the temperature of the heating platen is set within the range 800 C. to 2000 C.
According to one embodiment the temperature of the heating platen may be within the range 1650 C. to 1850 C. The platen/s is/are heated for a predetermined period r commensurate with a temperature selected from said temperature range. The predetermined period fails within the range 5.0 seconds-10 minutes.
The dimensions of the solid surface material are within the limits of the periphery of the heating platen. A radiused curve or curves formed in the solid surface material fall within the range 2 mm to 8 mm and the radiused curves formed in the solid surface material are either convex or concave.
The solid surface material is heated by bringing the platen to within 50-60 mm from the opposing surface of the material. For a solid surface material of a plain colour the predetermined temperature is 1650 C. and the predetermined period is 1.5 minutes.
For a solid surface material of a speckled colour the predetermined temperature is 1650 C, and the predetermined period is 2.2 minutes.
In another broad form the present invention comprises: a method for forming a curve or curves in a solid surface material and applying the so formed material to a substrate, the method comprising the steps of: providing a formed acrylic solid surface material sheet having a thickness within the range of 1.4 to 5.9 mm; b) preparing a solid substrate material to receive the sheet of solid surface material; c) providing a forming apparatus including a heating station including heating platens and a vacuuming forming station including, a mold and a sealing envelope thereabout; d) placing the solid surface material in contact with a healing platen or very near to the platen and heating the platen to a predetermined temperature for a predetermined period so that heat emanating from said platen is distributed substantially uniformly over at least one side of the sheet and throughout the full thickness of the sheet; e) before cooling sandwiching the solid surface material sheet between an upper mold element and one of another mold part and said substrate such that the solid surface material sheet conforms to the profile of an opposing surface of the substrate or an opposing surface of the another mold part; and .:arif) forming a solid surface material and substrate composite with the solid surface material sheet and-the substrate.
After the step of placing the solid surface material in contact with a heating platen after the predetermined heating period has expired the material is relocated onto the solid substrate. The periphery of the solid surface material is within the limits of the periphery of the heating platen and a radiused curve or curves which are either a convex or concave formed in said solid surface material fall within the radius range 2 mm to 8 mm.
"For a solid surface material of a plain colour the predetermined temperature is 1650 C and the predetermined period is 1.5 minutes. For a solid surface material of a speckled colour the predetermined temperature is 165 degrees C and the predetermined time is 2.2 minutes.
According to a preferred embodiment the heating is applied to an acrylic material over its whole surface causing the heat to penetrate through the full thickness of the material rendering at sufficiently plastic. This enables the sheet to bend evenly through the whole thickness of the material without compromise to the molecular and hence structural integrity of the sheet once formed according to the predetermined radiused curve or curves. It is preferable that the acrylic sheet is brought into contact with or in very close apposition to the heating platen as soon as the platen has reached the predetermined temperature. The heating may be provided by means of heating elements within the platens. It is essential that the platens distribute the heating evenly throughout the sheet.
In another broad form the present invention comprises: a method for forming a curve or curves in a solid surface material and applying the so formed material to a substrate; the method comprising the steps of; a) preparing a solid substrate material to receive a sheet of solid surface material of a thickness within the range 1.4 to 5.9 mm; b) placing the solid substrate on a forming mould located in or on a forming *...apparatus including a heating station including heating platens and a vacuuming forming station including a mould and a sealing envelope thereabout; c) placing the solid surface material in contact with a heating platen or very near to .the platen and heating the platen to a predetermined temperature for a predetermined period so that heat emanating from said platen is distributed substantially uniformly over at least one side of the sheet and throughout the full thickness of the sheet; d) after the predetermined heating period has expired relocating the solid surface material onto said solid substrate; e) before cooling sandwiching the solid surface material between an upper mould element and said substrate such that the solid surface material conforms to the profile of an opposing surface of the substrate.
Preferably, the method comprises the additional step of sealing the mould station with the sealed envelope and applying a vacuum to the inside of the envelope such that a free end or edges of the solid surface material conform to the profile of a corresponding free end or edges surface of the solid substrate.
The bending of the sheet material alone or in conjunction with a hard board substrate to form a composite is effected according to a preferred time/temperature regime. A suitable apparatus for employing the methodology of the present invention is that described in the applicant's own United States Patent 5,236,658.
The heating takes place in a heating station wherein platens or other suitable heating means are pre-heated to a predetermined temperature following which the S-acrylic material is introduced onto or into the heating station. The material is then left at the station for a predetermined period following which the material is shifted to a moulding station wherein a vacuum is applied causing a bend in the material with a radius as low as 6mm. According to one embodiment the heating .temperature is set at 170°C with the timer set at 2.2 minutes. According to one embodiment the acrylic and substrate are pressed together so that heating platens Ssandwich the so formed composite and mould the solid surface material to the preformed contour of an opposing surface of the substrate.
When a vacuum is applied overhanging free end solid surface veneer will form around the shaped substrate. The vacuum is held for 2 minutes then released.
The present invention will now be described in more detail with reference to preferred but non limiting embodiments and with reference to the accompanying drawings wherein: Figure 1: shows an isometric view of a suitable apparatus including a heating station with a composite of an acrylic sheet and substrate thereon according to one embodiment; Figure 2: shows a cross sectional view of a base mould having thereon a solid surface veneer sheet prior to bending of the solid surface material; Figure 3: shows a cross sectional view of the base mould of figure 2 this time after bending of the solid surface material; ^Figure 3 shows a cross sectional elevation of a solid substrate back splash assembly according to one embodiment; Figure shows a cross sectional elevation of a substrate comprising a bench and back splash assembly; Figure shows the assembly of figure 3(b) located on a base mould; Figure shows the arrangement of figure 4(a) but including an upper forming mould opposing a sheet of solid surface material prior to formation thereof; Figure shows the back splash of figure 3 prepared with a silicon bead; Figure shows a bench substrate receiving the preformed solid surface material; Figure shows the backsplash and bench assembly receiving the preformed solid surface veneer; Figure 6: shows a mould assembly according to one embodiment used in the method of the present invention to form a profiled seat; Figure shows a mould assembly used in the method of the present invention to form a profiled table top; and Figure shows the assembly of figure 7(a) with the solid surface material conformed to the profile of the bottom mould.
A number of embodiments of the invention will now be described. Referring to figure 1 there is shown an apparatus 1 which is suitable for use in thermoforming of an acrylic composite. Apparatus 1 comprises a heating station 2 including heating platens 2a which enable even distribution of heat over the full surface of the acrylic material to be formed. The invention will be described according to an embodiment wherein an acrylic sheet material is adhered to a particle board backing forming a substrate wherein an edge of the acrylic sheet is moulded to conform to an edge of the solid particle board substrate. Apparatus 1 has a platform 3 which includes a mould forming station 3 a including a base mould 7 on which receives either solid surface material to be formed alone or a particle board substrate material 4 overlaid with an acrylic solid surface veneer 5 (see figure 2 also). Prior to placing the so formed composite on platform 3 an adhesive which is preferably heat reactive (although non heat reactive adhesives can be used), is applied to underside surface 5 a of the acrylic material and upper surface 4a of the substrate. Once the acrylic solid surface veneer is put into apposition with the particle board substrate it is then placed on platform 3 in preparation for heat treatment. One of the distinguishing features of the present invention is the nature of the heating in that platen 2 facilitates heat distribution throughout the whole of the surface area of veneer sheet 5. According to the prior art methodology and in particular post forming, heating took place in a localised area of the sheet prior to bending. As previously indicated, this caused such as defects as crazing, blanching and in severe cases cracking. Heating of the acrylic solid surface of veneer throughout its full thickness and over its full surface area eliminates a pronounced heat gradient which may contribute to crazing, blanching and cracking in the region of bending. The optimum temperature for heating the solid surface veneer 5 is 170°C. This temperature is maintained for preferably 2.5 minutes. It has been found in trials that heating the solid surface veneer at a temperature of 170°C for minutes is the optimum combination of parameters which provides radiused curves free of prior art defects. However, it is possible to bend the solid surface veneer sheet 5 avoiding the above mentioned problems at adjusted temperatures and time I.*o periods but temperature values within the range 80°C and 220°C should be used. A variety of temperatures within this range may be feasible but as the temperature is increased above 170°C the time the solid surface veneer is in the heating station must be reduced. Consequently where the temperature is decreased the heating time should be increased. The shorter the time the more impractical it is to handle the material and successfully complete the bending operation prior to cooling of the sheet. Due to the thinness of veneer sheet 5, it is necessary to heat the material from one side only as the applied heating is sufficient to penetrate the mil thickness of the material and render the sheet workable. Preferably, the thickness of the material would fall within the range 1.4 to 5.9 millimetres but an ideal thickness would be in the order of 3mm. Once the solid surface veneer material is heated to the desired temperature and for the required period of time, cantilevered edge 5c begins to droop in the direction of arrow 6. Figure 2 shows a mould forming station wherein the composite formed by particle board substrate 4 and solid surface veneer sheet is placed for the moulding step. Preferably, base mould 7 onto which the composite is placed is located in a vacuum forming station such that a sealed envelope envelopes the vacuum forming station. During the heating phase, cantilevered edge 5c is supported by a support block (not shown) to prevent unwanted drooping.
According to the preferred embodiment, platen 2 applies heat at 170C to acrylic surface 5 for preferably 2.5 minutes. When the composite is moved onto the forming platform machine in figure 2, cantilevered edge 5c of solid surface veneer 5 engages underside surface 4b of substrate 4 as shown in figure 3. This creates a radiused curved edge on the thin sheet acrylic material. For example, external radii of down to 6mm can be achieved an internal radii of down to 3-4mm are achievable. Radii above these values are likewise achievable.
According to an alternative embodiment acrylic solid surface veneer can also be thermoformed in the absence of a substrate. In this case the sheet is introduced into the heating station following which it is heated to the desired temperature. It is then transferred to a moulding station where the sheet is curved about a preformed mould such that the sheet assumes at least part of the contour of the mould.
The present invention will now be described according to an alternative embodiment with reference to a method of application of a preformed solid surface material to a pre configured solid substrate. Referring to figure 3 there is shown a cross sectional elevation of a solid substrate back splash 20 according to one embodiment. The backsplash comprises backing element 21 and junction element 22 which is fixed to element 21 by means of screw 23 and optionally gluing in the region of joint 24. Figure 3(b) shows an exploded view of a the backsplash assembly 20 and profile bench top 25 which are fitted together by means of screw 26 in order to form a solid substrate on which a pre heated solid surface material will be placed to conform to the contours of the substrate.
Figure 4(a) shows a mould element 27 which forms a base portion of a mould *which will assist in formation of the solid surface material. Mould element 27 includes surface 28 on which is placed a solid substrate 29 similar to that described in figures 3 and 3(b) above. Once he substrate has been placed on surface 28 it is prepared for receiving the solid surface material. Preparation involves removal of dust particles, manually or by use of compressed air. Solid surface material 30 is shown placed over the substrate 29 with sufficient length at free ends 31 and 32 allowed to enable the solid surface material to fully conform to the surface of the substrate which is to be covered by the solid surface veneer. Prior to placing solid surface veneer 30 over substrate 29, the solid surface material 30, is placed on a heating platen or platens which are preheated to a predetermined temperature preferably falling within the range 1650 C to 1850 C for a predetermined time period which will optimally fall within the range 1.5 minutes to 3 minutes. The temperatures selected will dictate the length of time that the solid surface material is left on the platen such that if a lower temperature is selected, the solid surface material will be required to remain on the platen for a longer period until the requisite plasticity of the material is achieved to enable it to eventually conform to the shape of the substrate on which it will be placed. If on the other hand the temperature is increased, the solid surface material can be left on the platen for a shortened period. Where the solid surface material is denser, the heating time will be longer. Usually, solid surface materials with a speckled finish have a higher density than plain colours necessitating higher temperatures and/or longer time periods. Once the solid surface material is heated to the required temperature it is !,removed from the heating station to the forming station which has already been prepared in accordance with the arrangement in figure 4 Figure 4(b) shows the arrangement of figure 4(a) this time including upper forming mould 33 which opposes solid surface material 30. Before solid surface material oo has cooled, upper forming mould 33 is brought into contact with the opposing surface of material 30 in order to physically conform region 30a to contour 34 of substrate 29. Thus, the finished radius of the internal comer 30a of solid surface material 30 will be predetermined by the contour of region 34. This step is taken whilst the solid surface material still has sufficient heat for plastic deformation.
Following this step, the assembly shown in figure 4(b) is placed in a vacuum mould. This is effected by use of an envelope included in the forming station.
When under vacuum, free end 31 of material 30 conforms to the contour 35 of substrate 29. Likewise, free end 31 conforms to the shape of opposing profile 36 of substrate 29. When the solid surface material has cooled, it now assumes the profile of the substrate to which it will ultimately be attached.
The method of fixation of the formed solid surface material to the profiled substrate can be shown in figures 5(a) 5 Referring to figure 5(a) a silicon bead is applied to or in the region of surface 34 of backsplash assembly 20. As can be seen from figure 5(b) an adhesive bed 41 is applied to upper surface 42 of member The now formed solid surface material 30 is laid in contact with adhesive bed 41 following which it is slid into position such that free end 31 which is now formed as a contour which corresponds to end 35 of member 25 is slid into engagement with it.
The final step in assembly of the bench top described can be seen from figure 5(c) with the final step comprising the attachment ofbacksplash assembly to end 43 of member This fixation is effected by means of screw 26 (according to the arrangement shown in figure When backsplash assembly 20 is affixed as described, silicon bead 40 will be squeezed between external surface 45 and internal surface 46 of backsplash 20. Once these steps are performed the bench top is ready for installation and the substrate is effectively waterproofed. Once the solid surface veneer described in figures 3 to 5(c) has been bonded and the backsplash assembly 20 fixed into position, the completed assembly is returned to the mould in the vacuum table. The upper forming mould is again introduced to the top of the solid surface material whereupon the environment is subjected to an additional vacuum of about 10 minutes. As an example of manufacturing parameters the total fabrication time for a 3.6 metre length of solid surface material with 180° bull nose edge and a 100 mm backsplash will be in the order of minutes. Additional time may be required for such activities as preparing the substrate.
As an alternative to above described method, it is possible to form a solid surface material in an appropriate mould according to a predetermined contour and without the need to apply the solid surface material to a supporting substrate.
Referring to figure 6 there is shown a mould assembly 50 comprising corresponding male and female mould profile parts in opposing relationship.
f Located therebetween is a sheet ofpre-heated thin solid surface material which will assume the contour of the profile of the male and female mould profile parts 52 when female mould part is brought into engagement with male mould profile part 51 5 in the direction of arrow 54. Once the solid surface material 53 is cooled, the so formed profiled material can be used for its predesignated application such as a seat top or the like.
C Figure 7(a) shows a conceptually similar arrangement for that shown in figure 6 but in this example the solid surface material is formed as a table top. Figure 7(a) comprises mould assembly 60 comprising respectively male and female profile parts 61 and 62 having correspondingly formed contours 63 and 64 respectively.
When female mould profile part 62 is moved in the direction of arrow 65 until it engages solid surface material 66 whereupon the latter is forced to conform to contour 63. Figure 7(b) shows the mould arrangement 60 of figure 7(a) this time with the solid surface material 66 conforming to the, profile of the male mould.
Note that the female mould is not shown in figure 7(b).
For applications such as bench tops and the like it is preferable that the solid surface veneer be applied to a substrate. For all applications an ideal thickness of solid surface veneer would be in the order of 3 .Omm.
It will be recognised by persons skilled in the art that numerous variations and modifications may be made to the invention without departing from the spirit and scope of the invention broadly described herein.
0000 0 0660 60 *O 0 0oo0 00 S 0
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Claims (22)
1. A method for forming a curve or curves in a solid surface material and applying the so formed material to a substrate, the method comprising the steps of: a) providing a sheet of solid surface material having a thickness within the range of 1.4 to 5.9 mm; b) preparing a solid substrate material to receive the sheet of solid surface material; c) placing the solid substrate on a forming mold located in or on a forming apparatus including a heating station including heating platens and a vacuuming o• forming station including a mold and a sealing envelope thereabout; d) placing the solid surface material in contact with a heating platen or very near :I I to the platen and heating the platen to a predetermined temperature for a *predetermined period so that heat emanating from said platen is distributed substantially uniformly over at least one side of the sheet and throughout the full thickness of the sheet; e) after the predetermined healing period has expired relocating the solid surface material onto said solid substrate; f) before cooling sandwiching the solid surface material sheet between an upper mold element and said substrate such that the solid surface material sheet conforms to the profile of an opposing surface of the substrate; and g) forming a solid surface material and substrate composite with the solid surface material sheet and the substrate.
2. A method according to claim 1 comprising the further step of sealing the mold station with said sealing envelope and applying a vacuum to the inside of said sealing envelope such that a free edge or edges of the solid surface material conforms to the profile of a corresponding free edge of the substrate.
3. A method according to claim 2 wherein the sealing platen/s contact/s the solid surface material during the heating step.
4. A method according to claim 3 wherein the temperature of the heating platen is set within the range 800 C. to 2000 C. A method according to claim 3 wherein the temperature of the heating platen is within the range 1650 C. to 1850 C.
6. A method according to claim 5 wherein the platen/s is/are heated for a predetermined period commensurate with a temperature selected from said temperature range.
7. A method according to claim 6 wherein the predetermined period fails within the range 5.0 seconds-10 minutes.
8. A method according to claim 7 wherein the dimensions of the solid surface :material are within the limits of the periphery of the heating platen.
9. A method according to claim 8 wherein a radiused curve or curves formed in said solid surface material fiall within the range 2 mm to 8 mm. A method according to claim 9 wherein the radiused curves formed in the solid surface material are either convex or concave.
11. A method according to claim 10 wherein when the solid surface material is heated by bringing the platen to within 50-60 mm from the opposing surface of the material.
12. A method according to claim 11 wherein for a solid surface material of a plain colour the predetermined temperature is 165° C. and the predetermined period is minutes.
13. A method according to claim 11 wherein for a solid surface material of a speckled colour the predetermined temperature is 165° C, and the predetermined period is 2.2 minutes.
14. A method according to claim 4 wherein the platen/s is/are heated for a predetermined period commensurate with a temperature selected from said temperature range. **00
15. A method for forming a curve or curves in a solid surface material and applying the so formed material to a substrate, the method comprising the steps of: a) providing a formed acrylic solid surface material sheet having a thickness within the range of 1.4 to 5.9 mm; b) preparing a solid substrate material to receive the sheet of solid surface 0 material; c) providing a forming apparatus including a heating station including heating platens and a vacuuming forming station including, a mold and a sealing envelope thereabout; d) placing the solid surface material in contact with a healing platen or very near to the platen and heating the platen to a predetermined temperature for a predetermined period so that heat emanating from said platen is distributed substantially uniformly over at least one side of the sheet and throughout the full thickness of the sheet; e) before cooling sandwiching the solid surface material sheet between an upper mold element and one of another mold part and said substrate such that the solid surface material sheet conforms to the profile of an opposing surface of the substrate or an opposing surface of the another mold part; and f) forming a solid surface material and substrate composite with the solid surface material sheet and the substrate.
16. A method according to claim 15 wherein after said step of placing the solid see* surface material in contact with a heating platen after the predetermined heating period has expired relocating the solid surface material onto said solid substrate.
17. A method according to claim 16 wherein the temperature of the heating platen/s is within the range 1650 C to 1850 C. *99999
18. A method according to claim 17 wherein the platen/s is/are heated for a predetermined period commensurate with a temperature selected from said temperature range.
19. A method according to claim 18 wherein the periphery of the solid surface S. material is within the limits of the periphery of the heating platen.
20. A method according to claim 19 wherein a radiused cuive or curves formed in said solid surface material faill within the radius range 2 mm to 8 mm.
21. A method according to claim 20 wherein the radiused curves formed in the solid surface material are either a convex or concave.
22. A method according to claim 21 wherein when the solid surface material is heated by bringing the elements of the platen/s near to 50 60 mm away from the opposing surface of the material to be heated.
23. A method according to claim 22 wherein for a solid surface material of a plain colour the predetermined temperature is 1650 C and the predetermined period is minutes. colour the predetermined temperature is 1650 C and the predetermined period is 2.2 minutes.
24. A method according to claim 23 wherein for a solid surface material of a speckled colour the predetermined temperature is 165 degrees C and the predetermined time is 2.2 minutes. DATED this 10th day of May 2001. NORFORD INDUSTRIES PTY LIMITED 9 By Its Patent Attorneys 9* *WALSH ASSOCIATES 9•
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU43860/01A AU4386001A (en) | 1996-03-27 | 2001-05-11 | Method of heat forming solid surface veneer |
AU2004202098A AU2004202098A1 (en) | 1996-03-27 | 2004-05-16 | Method for Heat Forming Material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPN8979 | 1996-03-27 | ||
AU43860/01A AU4386001A (en) | 1996-03-27 | 2001-05-11 | Method of heat forming solid surface veneer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU16583/97A Division AU1658397A (en) | 1996-03-27 | 1997-03-26 | Method for heat forming solid surface veneer |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2004202098A Division AU2004202098A1 (en) | 1996-03-27 | 2004-05-16 | Method for Heat Forming Material |
Publications (1)
Publication Number | Publication Date |
---|---|
AU4386001A true AU4386001A (en) | 2001-08-30 |
Family
ID=3731155
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU43860/01A Abandoned AU4386001A (en) | 1996-03-27 | 2001-05-11 | Method of heat forming solid surface veneer |
AU2004202098A Abandoned AU2004202098A1 (en) | 1996-03-27 | 2004-05-16 | Method for Heat Forming Material |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2004202098A Abandoned AU2004202098A1 (en) | 1996-03-27 | 2004-05-16 | Method for Heat Forming Material |
Country Status (1)
Country | Link |
---|---|
AU (2) | AU4386001A (en) |
-
2001
- 2001-05-11 AU AU43860/01A patent/AU4386001A/en not_active Abandoned
-
2004
- 2004-05-16 AU AU2004202098A patent/AU2004202098A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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AU2004202098A1 (en) | 2004-06-10 |
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