Upgrade to King FlameShield ASTM E-84 Class A or Class B Flame Compliance and CAN/ULC-S102 for Canadian Compliance.
The upgrade is available for select King Plastic Products and is used in a broad range of product applications from marine components to indoor/outdoor cabinetry, structures, bathroom partitions, healthcare facilities and furnishings.
Results Class A Interior Finish: Flame Spread Index 0-25, Smoke Developed Index 0-450. Includes any material classified at 25 or less on the flame spread test scale and 450 or less on the smoke developed test scale. Any element thereof when so tested shall not continue to propagate fire.
Class B Interior Finish: Flame Spread Index 26-75, Smoke Developed Index 0-450. Includes any material classified at 25 but not more than 76 on the flame spread test scale and 450 or less on the smoke developed test scale.
Extrusion welding allows the application of bigger welds in a single weld pass. It is the preferred technique for joining material over 6 mm thick. Welding rod is drawn into a miniature hand held plastic extruder, plasticized, and forced out of the extruder against the parts being joined, which are softened with a jet of hot air to allow bonding to take place.
Hot gas welding
Hot gas welding, also known as hot air welding, is a plastic welding technique, which is analogous to metals, though the specific techniques are different. A specially designed heat gun, called a hot air welder, produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic. Hot air/gas welding is a common fabrication technique for manufacturing smaller items such as chemical tanks, water tanks, heat exchange and plumbing fitting. Two sheets of plastic are heated via a hot gas or a heating element and then rolled together. This is a quick welding process and can be performed continuously.
Speed tip welding
With speed welding, the plastic welder, similar to a soldering iron in appearance and wattage, is fitted with a feed tube for the plastic weld rod. The speed tip heats the rod and the substrate, while at the same time it presses the molten weld rod into position. A bead of softened plastic is laid into the joint, and the parts and weld rod fuse. With some types of plastic such as polypropylene, the melted welding rod must be “mixed” with the semi-melted base material being fabricated or repaired. These welding techniques have been perfected over time and have been utilized for over 50 years by professional plastic fabricators and repairers internationally. Speed tip welding method is a much faster welding technique and with practice can be used in tight corners. A version of the speed tip “gun” is essentially a soldering iron with a broad, flat tip that can be used to melt the weld joint and filler material to create a bond.
Contact Our Customer Service Department For Assistance With Locating A HDPE Welding Rod Company That Uses King Plastic Material For A Perfect Color Match.
King StarBoard®, King StarBoard® ST, King ColorCore®, King ColorBoard®, King CuttingBoard® other King Plastic HDPE products can not be glued using standard adhesives.
Products like 3M’s 5200 work well as a water sealing caulk but will not adhere King StarBoard® to itself or other materials in a permanent structural bond. It is preferable to mechanically fasten or weld King StarBoard®, but when an adhesive is necessary you can use a product called Lord 7542-AB, or 3M’s Scotch-Weld DP-8005, or opens in a new windowChem-Set™ 6105 Polyolefin Bonder.
We do not represent these products, make any claims about their abilities or accept liability for them.
If you need to use an adhesion process, make sure you have everything you need for the flame treatment:
A sheet of one hundred and twenty-grit sandpaper
A cleaning solvent such as Acetone, Toluene or Alcohol
A propane torch
Your selected adhesive of choice
Appropriate clamps to secure the bonded parts without damaging the finish of the King StarBoard® material
Proper surface preparation of your polymer is critical when using adhesives.
First, lightly sand the King StarBoard® surfaces to be bonded with one hundred and twenty grit sandpaper.
Now, clean the surface with a solvent, such as Acetone, Tolulene or Alcohol. Allow solvent to fully evaporate.
Move solvent and other flammable liquids and materials from work area.
Following the operating cautions of your propane torch, ignite the flame.
Working in a safe and well-ventilated area, hold the torch so the flame is approximately one to two inches or two and a half to five centimeters away and the blue, oxidizing portion of the flame is on the King StarBoard® surface to be bonded. Pass the flame over the surface at a rate of approximately twelve inches or thirty centimeters per three seconds. Total time the material should be exposed to the flame should be two to three seconds, about one half second per stroke.
This light exposure should not deform or melt the polymer in any way. You may see a “shadowing” effect as the flame passes across the surface, this is normal.
Make sure to let the polymer cool before proceeding.
Test the effectiveness of your flame treatment of the surface by wetting it with water. If the water beads up like on a freshly waxed car, the treatment was not effective. If the water “sheets” or lays flat on the surface, like on an un-waxed car, the treatment was effective and the surface is ready for bonding. If you are unsure if the surface is ready, compare the water’s action on treated area with the untreated area.
For the best adhesion, bond the product within thirty minutes of treatment as the flame treatment is temporary and declines in effectiveness with time. If you get interrupted and cannot complete the bonding within an hour or two you should re-treat the surface again before proceeding.
Then, following the instructions from the adhesive manufacturer, apply the glue evenly to the surface in a back and forth motion. Generally, it is recommended to not spread the adhesive all the way to the edge to avoid making a mess.
Apply the pieces to be bonded together, making sure they are positioned correctly, then lightly clamp in place. Ideally wipe off any excess adhesive that may have squeezed out before it cures.
Let the bond cure for the manufacturers recommended time frame before removing the clamps.
Welding is the process of uniting surfaces by softening them with heat. When welding thermoplastics, one of the key components is the material itself. For as long as plastic welding has been around many people still do not understand the basics, which is critical to a proper weld.
The number one rule of welding thermoplastics is you must weld like-plastic to like-plastic. In order to get a strong, consistent weld, it is necessary to make sure your substrate and your welding rod are identical; for instance, polypropylene to polypropylene, polyurethane to polyurethane, or polyethylene to polyethylene.
Here are some tips for welding different types of plastics and steps to ensure a proper weld.
Polypropylene (PP) is one of the easiest thermoplastics to weld and is used for many different applications. PP has excellent chemical resistance, low specific gravity, high tensile strength and is the most dimensionally stable polyolefin. Proven applications using PP are plating equipment, tanks, ductwork, etchers, fume hoods, scrubbers and orthopedics.
In order to weld PP, the welder needs to be set at approximately 572°F/300°C; determining your temperature will depend on which type of welder you purchase and the recommendations from the manufacturer. When using a thermoplastic welder with a 500 watt 120 volt heating element, the air regulator should be set at approximately 5 p.s.i. and the rheostat at 5. By doing these steps, you should be in the vicinity of 572°F/300°C.
Another fairly easy thermoplastic to weld is polyethylene (PE). Polyethylene is impact resistance, has exceptional abrasion resistance, high tensile strength, is machinable and has low water absorption. Proven applications for PE are bins and liners, tanks, laboratory vessels, cutting boards and slides.
The most important rule about welding polyethylene is that you can weld low to high but not high to low. Meaning, you can weld low density polyethylene (LDPE) welding rod to high density polyethylene (HDPE) sheet but not vice versa. The reason being is quite simple. The higher the density the more difficult it is to break down the components to weld. If the components cannot be broken down at the same rate then they cannot join together properly. Other than making sure your densities are compatible, polyethylene is a pretty easy plastic to weld. To weld LDPE you need to have the temperature at approximately 518°F/ 270°C, the regulator set at approximately 5-1/4 to 5-1/2 and the rheostat at 5. Like PP, HDPE is weldable at 572°F/300°C.
Tips for Proper Welds
Prior to welding thermoplastics, there are a few simple steps that need to be taken to ensure a proper weld. Clean all surfaces, including the welding rod, with MEK or a similar solvent. Groove the substrate large enough to accept the welding rod and then cut the end of the welding rod to a 45° angle. Once the welder has adjusted to the proper temperature, you need to prep the substrate and the welding rod. By using an automatic speed tip a lot of the prep work is done for you.
Holding the welder about an inch above the substrate, insert the welding rod in the tip and move it in an up and down motion three to four times. Doing this will heat the welding rod while heating the substrate. An indication the substrate is ready to be welded is when it starts getting a fogging effect — similar to blowing on a piece of glass.
Using firm and consistent pressure, push down on the boot of the tip. The boot will push the welding rod into the substrate. If you choose to, once the welding rod adheres to the substrate, you can let go of the rod and it will automatically pull itself through.
Most thermoplastics are sandable and the strength of the weld will not be affected when sanded. Using 60-grit sandpaper, sand off the top part of the welding bead, then work your way up to 360-grit wet sandpaper to get a clean finish. When working with polypropylene or polyethylene, it is possible to regain their glossy surface by lightly heating the surface with a yellow open flame propane torch. (Keep in mind that normal fire safety procedures should be followed.) Once these steps are completed you should have a weld that looks similar to the photo at bottom left.
Keeping the above tips in mind, welding thermoplastics can be a fairly easy process to learn. A few hours of practicing welding will give the “feel” for maintaining the right even pressure on the rod straight down into the weld area. And experimenting on different types of plastics will help master the procedure. For other procedures and standards, contact your local plastics distributor.
Signs and the information they convey have become an integral part of daily life. Companies of various sizes serve this vast market, but they all have common problems when it comes to routing of the materials common to the industry. Wood, aluminum, foam and plastic all have different cutting characteristics and no individual tool can solve all routing problems. This is particularly evident in the routing of plastics in the sign industry.
As a starting point, plastics can be placed into two general categories: flexible and rigid.
The tools of choice for flexible plastic usually involve the use of single or double edge “O” flute tools, which are available in straight or spiral flute configurations. In terms of rigid plastics, double edge straight “V” flute tools, spiral “O” flutes with hard plastic geometry, and two and three flute finishers are recommended. The tool materials for most of these router bits are readily available in high-speed steel for hand operations and solid carbide for CNC routing. Solid carbide is a very durable material when utilized in a controlled environment of CNC, but not reliable in hand routing, which tends to be less rigid with more opportunity for tool breakage.
The aforementioned recommendations are general in nature and are just a beginning for tool selection. In order to target an application, the sign maker has a new resource on the Internet at www.plasticrouting.com. This site provides a specific tool recommendation for a variety of plastic materials. The major emphasis of this website is to recommend router tools that provide the best finish at a productive feed rate. Sign makers, who historically use smaller diameter tools to achieve the necessary radii associated with lettering, will be pleasantly surprised. The tool diameter is the controlling factor in feed rate, but larger diameters were not necessarily superior in terms of finish. The use of micrograin carbide with the necessary geometry to achieve chip evacuation has made smaller diameter tools more effective for the sign industry. The site can also be accessed via a link on IAPD’s web site at www.iapd.org.
Recently, there have been several new styles of specialty tools developed to improve finishes with faster cycle times without tool changes and or advanced programming techniques. Both should prove to be advantageous to the sign industry. The first of these tools was developed to provide a smooth bottom surface in lettering or pocketing applications. Most router tools are designed to plunge and rout with the emphasis on the side geometry rather than the point. Consequently, the point end would always leave swirl marks, which required a secondary operation to remove the swirls.
The new tool (Figure 1) utilizes a near flat point with radiused corners to create a smooth bottom with an aesthetically pleasing result.
The second innovation (Figure 2) is the development of a rout and chamfer bit designed for plastic sheets. By combining both a straight flute optimized for cutting plastics with a cutting edge sized for specific sheet sizes and a 45 degree chamfer edge, these tools can rout out plastic parts and apply a variable depth edge chamfer in a single pass.
By combining these features into a single tool, tool changes within the machining cycle are eliminated and CNC routers without tool changing spindles have new capabilities for parts production. The advances in router tooling have generally followed the rapid growth and usage of CNC routers or router tables as they are commonly called in the sign industry. These machines have revolutionized the speed and accuracy of sign making and the ability to produce intricate shapes and designs with specialized software. Router tooling has enhanced the CNC user by providing stronger tools with improved cutting geometry specific to the material being machined. However, merely choosing the correct tool without effective machining practices is an exercise in futility. Consequently, a review of proper machining practices would be in order.
Maintain CNC machines per manufacturer’s recommendation with proper lubrication of machine slides and drive systems
Check for play in the table or spindle mounting systems
Establish a collet, collet nut, and tool holder maintenance program and replace collets after 600-700 hours of usage
Ensure part rigidity by following proper spoilboard techniques
Establish collecting procedures to maximize tool rigidity
Maximize chipload to minimize tool wear
Select tools with the shortest possible cutting edge length to achieve depth of cut
Use straight through tools where the cutting edge length and shank are the same size to reduce breakage
Maximize dust collection to completely evacuate gummy chips produced by some plastics The right tool for the job and sound CNC machining practices will improve throughput, product quality and profitability in the sign industry.
Elite Outdoor Kitchens and Design is a company that creates, designs and installs outdoor cabinets and products using the best alternative to wood, King StarBoard® ST. It is a marine-grade polymer that has been used in the manufacturing of cabinets on yachts and cruise ships for over 50 years. King StarBoard® ST is produced locally in North Port, FL. King StarBoard ST allows Elite Outdoor Kitchens the flexibility to do almost anything that can be done with wood. The application possibilities of KingStarBoard ST ranges from cabinetry, to furniture, planters and storage units.
King StarBoard® ST makes it possible for companies such as Elite Outdoor Kitchens and Designs, to build the most environmentally friendly and durable line of outdoor products.
In 1990, 90%+ of opens in a new windowTeak Isle’s fabricated parts were composed of Wood. By 1995, 90%+ were plastic. The first and obvious answer is durability. King Starboard® will last the lifetime of your boat with essentially zero maintenance. Teak requires regular oiling to keep the wood from discoloring and breaking down.
King Starboard® is a UV stabilized homogeneous sheet that will never discolor or require any oiling or refinishing. King Starboard® is easily fabricated using standard woodworking materials and for the most part works just like wood.
The advantage when working with Starboard is that the sheets are perfectly consistent. You do not have to accommodate for grain direction, color inconsistencies, and knots in the wood. You also are not limited by board width and therefore you avoid gluing up boards to create wider products.We stock over 10 different colors of King Starboard®. Largely these are different shades of white to match gel coat colors and give boats a clean flush look.
When King Starboard® was first introduced it was very comparable in cost to teak wood. Now, because of environmental restrictions as well as new political restrictions in Burma (which accounts for nearly 1/3 of the world’s total teak production), Teak prices have skyrocketed.
Being a custom home builder of waterfront homes for over twenty years, we are constantly trying to come up with products that will withstand the elements better for our outdoor kitchens. I have tried all types of wood and plywood and have since determined that King StarBoard® ST will withstand the elements and is far superior to any other material I have tried. You can use this material for all your outdoor cabinetry needs with the utmost of confidence. Your callbacks will be over.
Contemporary Sculptor, Designer and Structural Engineer
opens in a new windowMichael Enn Sirvet is a contemporary sculptor, designer and structural engineer. He creates two and three-dimensional works. Michael uses metals, hardwoods, plastics and other materials. For instance, King StarBoard® and King StarBoard® ST are used in the art forms shown in the photos below.
UHMW has been an industry standard for abrasion resistance for many years. However, UHMW is expensive and physical properties diminish over time when exposed to UV. One manufacturer has developed a product called King Hy-Pact®, the super tough industrial polymer sheet that is environmentally stabilized with excellent physical properties. It is the product of a proprietary process called K-Stran™, the most advanced manufacturing process of quality sheets with tight tolerances and custom widths up to 60”. Tests have shown after 2,000 hours of UV exposure, King Hy-Pact® outperforms both UV stabilized HDPE and UHMW with superior toughness in wear resistance, flexibility and high-impact strength. King Hy-Pact® is the smart choice for many high abuse applications requiring superior properties, outstanding flatness and a smooth surface while providing significant cost savings compared to UHMW. Applications include, but are not limited to food processing chutes, star wheels, fabricated parts, snowplow blades and dock fenders.
King Hy-Pact® is UV stabilized and FDA approved. It comes standard in a standard sheet size of 48″ x 120″ with gauges as thin as 1/8” thick up to 1” thick.
Expansion and Contraction
Distributors and installers should be aware that when polymer sheets are attached with mechanical fasteners, space must be allowed around fasteners for the product to expand and contract during temperature changes. Please refer to the CNC Fabrication page for brochures, videos and guides.
To Better Service Commercial Customers in the Western United States
MEDFORD, OR., April 19, 2011 — King Plastic Corporation, worldwide supplier of polymer sheet, slab and massive shape products in a broad range of materials, has opened a new warehouse facility in Medford, OR, to better service its commercial customers in the western United States.
“The new warehouse lets us take advantage of our ability to deliver products quicker to customers in western states. Now we can reduce both freight costs and shipping times, while providing our commercial customers more immediate access to our products,” said Jeff King, president of King Plastic Corp.
“Storing products and palletizing inventory in Medford, Oregon will allows us to provide next-day service – if not same day service – which will be a great benefit to our west coast customers,” added manager, Steven King.
All orders will still be placed through our corporate office in North Port, FL 34288.
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About King Plastic Corporation
Founded in 1968, King Plastic Corporation is a leading manufacturer of quality polymer sheets, slabs and massive shapes – including several products pioneered by the company. Its polymers are sold worldwide through a network of plastics distributors and markets in marine, architectural, healthcare, signage, industrial, food service and many other markets. The company headquarters is a 250,000 square-foot manufacturing facility in North Port, FL.
Plastic distributors and fabricators everywhere are discovering exciting new business opportunities when using polymer sheet stock.
Designed to last a lifetime, King StarBoard® ST sheets with not rot, splinter, swell, weaken or delaminate. If you are unfamiliar with using King StarBoard® ST polymer sheet stock no need to worry, the sheets are easy to fabricate using the same tools and techniques used in woodworking. Handled like finished plywood, with no finishing required polymer sheet stock can be bent, cut, routed, welded and so much more. The possible uses are endless with a product that works like wood.
Although King Plastic ST polymer sheets will not easily scratch, scuff or wear it is protected with a masking on one side to keep the sheet free from scratches.
King StarBoard® ST can be routed with hand held and CNC routers. CNC routers turn your CAD drawings into beautifully finished doors and trim quickly and efficiently.
High-speed steel or carbide tipped cutters quickly remove material leaving a crisp slick edge.
Door and drawer fronts can be contoured in nearly any shape, allowing you to transform an ordinary door into any design. You can also edge profile, mill and engrave polymer sheets when using a CNC router.
Hand routers can also be used to form edges, creating a smooth finished look.
King Starboard® ST can be cut with all types of saws. Band saws, circular saws, hand saws, table saws and jig saws.
The optimum circular saw blade for cutting polyethylene is a 1/8” kerf, carbide tipped, 1.25 tooth per inch saw blade. Slower feed rates will minimize chatter marks on the cut edge. The surface of the material, which is in contact with the saw table or base should be protected by leaving the protective masking on the sheet. Cutting King StarBoard® ST sheets does not produce noticeable airborne dust.
Specially designed forming and bending heaters are available to heat a sheet of plastic for bending or forming into any desired angle. Cutting a V groove at the desired bend will make the angled bend much more precise and clean. These inexpensive, precision tools heat thermoplastic sheeting up to ½” thick for forming bends. The combination of variable temperature control and two heating surfaces adapts to a wide range of material sizes and thicknesses.
Forming a radius can also be done by using a heat gun. Use a back and forth motion across the length of the sheet both top and bottom until the StarBoard® ST is soft enough to start bending. Do not get the heat to close to the material as blistering may occur. And be aware the thicker the material the longer it will take to form a desired radius.
For the most secure part between two pieces of material it is a good idea to first make a butt joint. Then tack welds are produced when the hot tool is run along the seam where the 2 pieces of King StarBoard® ST are touching, producing a thin film of polyethylene joining the two pieces together. Tack welding is not strong and is used primarily for positioning to allow another fastening method to be used.
King StarBoard® ST can be welded using a plastic hot air welder. There are several types of plastic welders available. A polyethylene welding rod is required. The joints made with a plastic welder are as strong as the material itself and are highly recommended for edge joints. In some cases the plastic welding rod can be cut from the material to be welded, which allows for the weld joint to become virtually invisible.
Using a pocket hole jig is the best and fastest way to create strong plastic joints with concealed fasteners. Pocket joints are similar to dowel joints except that a screw is used and only one joint element has to be drilled. The holes are drilled at a shallow angle on the back of the piece. These shallow holes conceal the fastener and create a very strong joint.
When adding a counter-sink to the pocket joint, the two pieces of material are screwed together and the receiving piece of the material needs a space to expand into once the screw is set.
A pocket joint makes the assembled pieces tight and secure. Tack welding is done before the two pieces of material are screwed together.
Here a support beam is inset then extrusion welded for a secure bond, permanently welding the cabinet to the top.
When you’ve finished fabricating and assembling your components, simply ad your hardware and the cabinet is ready to install.
King Starboard ST material is self-lubricating so there is really no need for steel drawer slides. But if you want a really secure attachment and a smoother feel stainless steel drawer slides work great.
Chemically resistant plastics like Polyethylene and Polypropylene are not meant to be glued. Adhesives that are not specifically made for these types of plastic will not effectively glue the plastics. Any glue that you use may have only limited-time effects.
Quality polymer sheets from King Plastic Corporation are ideal for all types of commercial and residential outdoor cabinets, furniture and storage, restroom partitions, signage, lockers – even antimicrobial furnishings for healthcare environments. King Plastic polymer sheets work like wood and last a lifetime.
When producing our products, King Plastic uses processes that are non-polluting and conserve energy and natural resources, making it economically sound and safe for employees, communities and consumers. The polymers are completely recyclable and left over materials are recycled back into our products. When cutting or fabricating, there is no harmful dust, but instead small shavings that are recyclable. It contains no known harmful substances, including carcinogens or toxins. Off-gassing does not occur when the sheets are cut and fabricated. It is not necessary to use acids or harsh chemicals for finishing, cleaning, or maintenance. The outstanding durability of products made using our sheets maximizes product life cycles thus reducing the overall impact on our environment.
King Plastic Colorfast Environmentally Friendly Polymer Sheets
King’s polymer sheets stand up to thousands of uses and keep your bright ideas looking bright for years. King ColorCore® and King ColorBoard® polymer sheets are the versatile, durable and colorfast to provide that competitive edge in your business you’re looking for. Both polymer brands are UV stabilized and waterproof for a lifetime of worry-free use in harsh outdoor environments. King ColorCore® and King ColorBoard® are also available in several gauges and a variety of matched colors. King ColorCore® unique PolyFusion™ process is a state-of-the-art technology that fuses contrasting layers of colors into a single homogeneous sheet. It is ideal for engraving to make indoor and outdoor signs, as a building sheet for playgrounds, and other recreational and industrial applications.
Using King products may qualify you for LEED Green building rate points.
Does King StarBoard® require support when bearing a load?
The King StarBoard® Family of Marine Grade Polymers are strong, but they are not a structural material. When using these products, they must be supported by a load bearing framework.
Use King StarBoard® itself to brace your work.
A reinforcing rib of King StarBoard® can be attached under a spanning application such as a shelf or seat to add the necessary stiffness.
How can I add stiffness to my project?
To add stiffness to a King StarBoard® step tread or canoe seat, cut grooves under the King StarBoard® and install a U channel support brace.
Reinforcing pads of King StarBoard® can be attached under a spanning applications such as a swim platform to add the necessary stiffness.
To add stiffness to a King StarBoard® hatch or table, install reinforcing ribs on the bottom.
Is there any way to reverse sheet “pinking” or discoloration?
Reversing Sheet “Pinking” or Discoloration
Pinking, yellowing, discoloring, and gas fading are different names that describe color changes in polyethylene. The condition is strictly cosmetic and does not adversely affect the physical properties of the material. To reverse and remove the pinking condition, expose the material to U.V. for approximately 40 minutes. See opens in a new windowPinking Bulletin for details and prevention instructions.
Being outdoors is part of our lifestyle, and what better way to spend a relaxing weekend than having hors d’oeuvres or barbeque made in a beautiful kitchen on your outside patio! “Elite Outdoor Kitchens and Design can create this outdoor experience and lifestyle for you,” says Rita Pogany, co-owner of the company for the last four years. Read More »