Roofing Tile System And Method Of Manufacture
20200378124 ยท 2020-12-03
Inventors
Cpc classification
B29C48/175
PERFORMING OPERATIONS; TRANSPORTING
B29K2509/00
PERFORMING OPERATIONS; TRANSPORTING
B29C33/306
PERFORMING OPERATIONS; TRANSPORTING
B29C43/021
PERFORMING OPERATIONS; TRANSPORTING
B29K2105/0044
PERFORMING OPERATIONS; TRANSPORTING
B29C2043/3671
PERFORMING OPERATIONS; TRANSPORTING
B29K2023/065
PERFORMING OPERATIONS; TRANSPORTING
B29C43/18
PERFORMING OPERATIONS; TRANSPORTING
B29K2105/0032
PERFORMING OPERATIONS; TRANSPORTING
B29C48/0011
PERFORMING OPERATIONS; TRANSPORTING
B29C2043/3602
PERFORMING OPERATIONS; TRANSPORTING
B29C48/16
PERFORMING OPERATIONS; TRANSPORTING
E04D1/26
FIXED CONSTRUCTIONS
B29C48/297
PERFORMING OPERATIONS; TRANSPORTING
International classification
B29C43/18
PERFORMING OPERATIONS; TRANSPORTING
Abstract
A synthetic roofing tile or panel is provided that includes one or more features enhancing the impact resistance and other desirable properties as well as the ease of installation and/or use of the roofing tile or panel on a building structure. The roofing tile is formed in an improved color variation process is provided with regard to the manufacture of a synthetic material roofing tile in order to effectively simulate the appearance of the natural material represented by the synthetic roofing tile. The roofing tile also can be compression molded such as in a method for manufacturing a synthetic roofing tile or panel is provide in which a number of inserts representing the desired appearance for the roofing tile or panel can be utilized in the manufacturing process to provide roofing tiles or panels with the desired appearance. The inserts can be interchanged within the molds in order to provide different appearances to roofing tiles or panels formed using the same molds.
Claims
1. A roofing tile formed in a compression molding process.
2. A roofing tile comprising a body formed of a synthetic material including a binder blend.
3. The roofing tile of claim 2 further comprising at least on nailing area thereon
4. The roofing tile of claim 3 wherein the nailing area includes a positioning guide.
5. A method for forming a roofing tile, the method comprising the steps of: a) providing a number of inserts approximating the appearance of a natural material; b) placing the inserted within a mold; and b) compression molding a material into the shape of a roofing tile having the appearance of a natural material.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings illustrate the best mode currently contemplated of practicing the present invention.
[0013] In the drawings:
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DETAILED DESCRIPTION OF THE DRAWINGS
[0031] With reference now to the drawing figures in which like reference numerals designate like parts throughout the disclosure,
Color Variation Processing
[0032] The color variation processes or methods schematically illustrated in
[0033] The processes presently disclosed, alone or in combination with other aspects of building and/or roofing products/material manufacturing, such as the particular molding process employed and/or the mold design, among others, aid in eliminating the pattern effect previously offset in the relevant prior art by utilizing the mold volume calculation method. The processes presently disclosed additionally add further abilities to the formation of the building products with color development providing a finished look to the resulting roofing tile or shingle or building panel, such as siding. In utilizing the novel processes disclosed herein, and illustrated in exemplary embodiments in
[0034] For example, while the colors yellow and blue together make green, if a yellow color material and then blue color material added on top are initially added high in the feed throat 10 then end affect in the end product will be some yellow, the same amount of green as the yellow material and blue material are well mixed in the feed throat 10, and then blue will come out. If we load yellow and then blue on top lower in the feed tube you will see clean yellow come out, then very little green hue at all due to the limited mixing of the yellow and blue, and then blue almost as if the materials were painted separate colors. It is possible to adjust these color loadings to have whatever color effect we want for the end product thus providing the ability to match almost any natural color look of historical slates and wood roofs and/or sidings with very little effort or cost. With this discussion providing the general aspects of the improved color variation process aspect of the present invention, the following is a discussion of a number of exemplary embodiments of the implementation of the color variation process.
Method 1:
[0035] As shown in the exemplary illustrated embodiment of
[0036] In these configurations, gravity operates to draw the color material from the body 21 of the feeders 18 and/or 20 into the throat 10 for mixing with the remainder of the material(s) used in forming the end product 100 and the other color materials. In one exemplary embodiment, the color material is added in the form pre-colored pellets (not shown), which are completely formed finished material of various colors, in stages to achieve the desired coloration or pattern effect for the end product. In an alternative embodiment, a non-pelleted dry color mix or powder can also be dispensed from the feeders 18 and/or 20 in the same gravity feed manner as the pellets.
Benefits of Method 1:
[0037] Providing customized color pattern or appearance in building products using pre-colored pelletized or powdered material with a sequencing method in which powder colorant or colored pellet is introduced into the manufacturing process for the building product at the throat of the mixing machine/extruder without the need of mold volume calculations to reduce patterns [0038] Implementation of the process of material flow color variation with layering of the materials to achieve the desired color output.
[0039] As shown in the exemplary illustrated embodiment of
[0040] In the device 11 of
[0041] Below the feeder 30, the color is introduced into the throat 10 from the chargers 32 and 34. Depending upon the form of the color material, e.g., a liquid color or a solid color, the chargers 32 and 34 can take different forms, such as similar to the feeders 18 and 20 in
[0042] In operation, the required amount of non-colored pellets and other materials are charged to the hopper 16 of the device 11 to accommodate the run of material for forming the building product(s) 100. After the materials are positioned within the feeder 30, the feeder 30 is operated to dispense the materials into the throat 10. As the volume of non-colored pellets are dropped and/or fed into the mixing section/mixer 36, the color(s) needed for that material run is also introduced into the mixing section 36 at the same time by the color chargers 32 and/or 34. The mixer 36 combines the color(s), the non-colored pellets and the other materials in order to achieve the desired color profile for the building product 100, with any residence time of the materials in the mixer 36 being determined by different preset times associated with the desired color and/or look for each shingle or building product 100. When the prior charge of materials and color reaches a particular height within the feed throat 10 below the mixer 36, as monitored by a proximity or level switch (not shown) positioned on the throat 10 below the mixer 36, the mixer 36 dispenses or drops its material charge into feed throat 10 for further processing in the extruder 12. Once the mixer 36 drops the charge held within it, the feeder 30, which has been pre-loaded with additional non-colored pellets and other materials, and the color chargers 32 and 34, which have also been pre-loaded with additional color materials, begin loading the materials into the mixer 36 to form the next building product material charge.
Benefits of Method 2:
[0043] Usage of non-colored pelleted material with a sequencing method of coloring through powder colorant or colored pellet being introduced into the process at the throat of the machine without the need of mold volume calculations to reduce patterns. [0044] Usage of color feeders/chargers and a mixing section to allow for powdered or pelleted colorants where previously pre-batched industry standard color dispersions was the method. [0045] Implementation of the process of material flow color variation with layering of the materials to achieve the desired color output.
[0046] As shown in the exemplary illustrated embodiment of
Benefits of Method 3:
[0047] 1.sup.st in composite roofing industry to adapt non-colored pelleted or powdered material to be color sequenced through downstream color feeders on the extruder itself during the shingle manufacturing process allowing for many color variations
[0048] As shown in the exemplary illustrated embodiment of
Benefits of Method 4:
[0049] 1.sup.st in composite roofing industry to adapt non-colored pelleted or powdered material with a sequencing method of coloring through powder colorant or colored pellet being introduced into the process at the throat of the machine without the need of mold volume calculations to reduce patterns as we have overcome that need. [0050] 1.sup.st in the composite industry to use color feeders and a mixing section to allow for powdered or pelleted colorants where previously pre-batched industry standard color dispersions was the method. [0051] 1.sup.st in composite roofing industry to adapt downstream color feeders on the extruder itself in conjunction with the throat color feeders during the shingle manufacturing process allowing for many color variations. [0052] 1.sup.st in composite roofing industry to implement the process of material flow color variation with layering of the materials to achieve the desired color output. [0053] 1st in industry to combine methods 2 and 3 giving virtually unlimited color ability with subtle hue changes and drastic low and highlighting at the same time all while sequencing colors to eliminate patterns and to match historical product looks.
[0054] With regard to the composition of the roofing tiles of the present disclosure, whether made using the previously described methods or by other methods, the roofing tile includes recycled components, as described in the prior art, and includes a blend of binders as identified below in certain exemplary embodiments. The binder blend is used to manipulate the polymers in the recycled component to achieve the desired characteristics of the material that we want. We can use a wider range of materials and then modify them through the binder blend to achieve the same elevated output performance above the performance of our historical materials. Previously such as the Edson patents EPDM was used an impact modifier of 20 to 30% as rubber to increase impact. The problem is rubber also burns and does not bond to the plastics at the level that we require. We are the first in the composite rooting molding world to be able to utilize these unique components.
TABLE-US-00001 TABLE 1 Composition of Spanish Style Roofing Tiles (w/w %) Class A Fire Class C Fire Mag Hydroxide 30-45% 0-20% Calcium 400 mesh particle size or smaller 5-15% 25-45% Wollastonite 1-5% 1-5% Blend of binders from below 8-12% 8-12% Dow Engage Ethylene Octene Dow Versify Polypropelene Ethylene copolymer Dow Affinity Polyolefin Plastorner Dow Infuse Olefin Block Copolymer Ethylene vinyl acetate 10-20 melt 3-5% 3-5% (10-28% VA Content) LDPE 2-4 melt 10-15% 10-15% HDPE 8-15 melt 20-28% 20-28% Tinuvin 783 UV .4% .4% Chimasorb 81 UV .2% .2% Irganox b225 antioxidant .1% .1% Talc 1-10% 1-10% LLDPE 3-19% 3-19% Zinc Stearate 0.5-3% 0.5-3% Balance is colorant
TABLE-US-00002 TABLE 2 Composition of Slat/Cedar Shake Style Roofing Tiles (w/w %) Class A Fire Class C Fire Mag Hydroxide 30-40% 0-20% Calcium 1000 mesh particle size 4-10% 20-45% Wollastonite 1-5% 1-5% Blend of binders from below 22-38% 22-38% Dow Engage Ethylene Octene Dow Versify Polypropelene Ethylene copolymer Dow Affinity Polyolefin Plastomer Dow Infuse Olefin Block Copolymer Ethylene vinyl acetate 10-20 melt 5-10% 5-10% (10-28% VA Content) LDPE 2-4 melt 12-20% 12-20% HDPE 8-15 melt 15-18% 15-18% Tinuvin 783 UV 0.5% 0.4% Chimasorb 81 UV 0.2% 0.2% Irganox b225 antioxidant 0.1% 0.1% Talc 1-10% 1-10% LLDPE 3-19% 3-19% Zinc Stearate 0.5-3% 0.5-3% Balance is colorant
[0055] Referring now to
Benefits of Roofing Tile 100:
[0056] 1. No Preformed nail holes as with traditional Spanish. Concrete, clay, and previous composite barrel tiles have preformed nail holes due to material limitations. Material performance with product design is unique allowing for the first Spanish tile that is gun nailable without damage. 1.sup.st in composites and V in compression molding of Spanish tiles. [0057] 2. Raised nail hole pad adding strength to the nail area while keeping the rest of the tile light for material savings. Also doubles as water deflector keeping wind driven water from reaching the nail area. [0058] 3. 1.sup.st composite barrel tile without raised fixed nail hole allowing for the fulcrum point of the tile to be moved down increasing wind uplift capability. [0059] 4. Raised nail gun guide for automatic positioning of nail by guiding the installers nail gun position. Nail guide also serves as a water deflector for wind-driven rain secondary to the gun alignment feature. [0060] 5. Material performance allows for lighter yet higher performing product [0061] 6. Material performance allows for highest of impact performance without adding rubber or EPDM as a impact modifier like previous materials in the market. [0062] 7. Third nail hole in bottom left rain track. 1.sup.st in and tile. 1.sup.st in composites, 1.sup.st in compression molding. This allows for a hidden fastener that increases wind uplift without compromising product water shedding performance. [0063] 8. 1.sup.st ever to achieve this shape of Spanish tile in the composite market either through injection or compression molding. [0064] 9. 1.sup.st ever barrel design allowing fasteners to penetrate through the material self-sealing around the nail helping to eliminate leaks and to increase wind uplift performance. [0065] 10. For hand nailing and screwing a Nail and screw target location identified with an indented circle is on the tile marking fastener location.
Process of Manufacture for Tile of FIGS. 5-7:
[0066] If color variation is desired the color process method 1-4 will be used [0067] Utilizes ultra-fine particle fillers to aid in impact and strength [0068] Utilizes proprietary binder material blend adding to strength and performance. [0069] Material is a new and unique formulation never having been produced or sold before.
[0070] Referring now to
[0071] Further, referring now to
[0072] Also, the mold 300 includes a cover 308, best shown in
Benefits of Flat Roofing Tile 200:
[0073] 1. 1.sup.st in composites Image insert Panel Design allows for infinite number of images and widths [0074] 2. 1.sup.st ever use of Image Insert tooling technology allows for changing from staggered to non-staggered imaging, or from slate to shake within the same tooling, or even other imaging, allowing for quick changeovers and lower tooling cost from product line to product line. For example, running shake and slate separate tooling would run around $250,000 for our process. The Image insert technology lowers that cost to $135,000 for both sets. For an injection molding comparable tooling for 2 lines would be in excess of $2,000,000 for two profiles. Our Image Insert technology would lower tooling cost to about $1,100,000. [0075] 3. 1.sup.st ever in composite roofing product using Cast Image Insert technology allowing for Real images from mother nature such as true wood imaging or slate imaging giving our products the true to life look verses previous molds that require computer designing and metal machining of the image which is never true to mother nature's look. The Cast Image Insert makes this composite shingle the first to have real imaging from mother nature. [0076] 4. Image Insert technology allows for quick change for image repairs lowing lifecycle maintenance of molding tools [0077] 5. 1.sup.st ever panel design in composite compression molded roofing products. [0078] 6. 1st ever composite roofing panel that is a true taper allowing for a solid accessories to be used on gables and valleys where previous panel designs like BB light weight patent needed either a metal flashing or other closure to hide the fact it is a panel [0079] 7. 1.sup.st ever non nail through tab for tucking under the shingle next to it for increased wind uplift. [0080] 8. 1.sup.st ever nail location on the water lock lower side of a composite roofing shingle. Add this with the under tuck tab and top nails and you have all 4 corners of the shingle being held down for superior wind performance, verses the traditional 2 fastener location on other products. This allows for increased wind performance and will lower material cost in high wind areas by not having to shrink exposure like previous products. [0081] 9. Can be installed at different exposures without modifying the panel unlike other panel designs that build in steps on the back side for alignment and strength purposes. [0082] 10. Nailing areas are solid from top to the bottom of the nail location without hollow areas like on competitive panels. This eliminates panel deflection and distortion during installation. Eliminating the tattle tale marks of a fake panel by seeing deflection in the nail areas like other panels in the market
Process of Manufacture for Tile 200:
[0083] if color variation is desired the color process method 1-4 will be used [0084] Utilizes ultra-fine, i.e., 325 mesh size or smaller, and optionally 200 mesh size, particle fillers to aid in impact and strength [0085] Utilizes proprietary binder material blend adding to strength and performance. [0086] Material is a new and unique formulation never having been produced or sold before.
Benefits of Compression Insert Mold:
[0087] 1. 1.sup.st ever compression molded shingle design with insertable imaging tooling. This allows for quick repairs in imaging and also image changes using the same tooling which greatly reduces mold cost from product to product line. For example, the same tool base could run the following bolt in and out images. Hand split shake, rough sawn shake, slate, concrete tile etc. Saving hundreds of thousands of dollars in tooling costs. [0088] 2. 1.sup.st ever compression molded shingle and possibly injection molded shingle with modular tooling design allowing for quick and efficient mold maintenance. For example after so much run time a mold will begin to flash from wear and tear. Instead of building a completely new tool set spending a hundreds of thousands dollars we would actually unbolt the damaged area and replace them. So instead of 8 weeks of having new molds made we can unbolt and bolt in quick repairs using in stock shelf items in an afternoon with an overall estimated cost of 5 to 10 thousand dollars for the entire tooling set repair saving time and money. [0089] 3. 1.sup.st ever compression molded shingle and possibly injection molded shingle using cast image inserts. The casting process allows for true to life imaging. This can be done using bronze, aluminum, steel or other materials. This can also be a machined image insert verses cast. [0090] 4. 1.sup.st ever molded shingle using a non-nail through under tuck tab locking down the shingle corner [0091] 5. 1.sup.st ever molded shingle with lower water lock fastening location locking down all four corners when installed. [0092] 6. 1.sup.st ever shingle panel design allowing for a solid accessory shingle eliminating the need for fake accessories that are normally not used with slate or shake installations making our design the most realistic looking panel design on the market. [0093] 7. 1.sup.st ever panel design to meet all testing criteria where the formulation can be made from 100% recycled polymer material.
[0094] Various other alternatives are contemplated as being within the scope of the following claims particularly pointing out and distinctly claiming the subject matter regarded as the invention.