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  • Orlando Plastic Supply
      Orlando, Florida Plastic Supply - The city of Orlando is serviced in 1-2 business days from our new Tampa Location. Established in 1984', Professional Plastics is a leading supplier of plastic sheets, rods, tubing and films. Stock materials include: Plexiglass / Acrylic, Polycarbonate / Lexan, PVC, ABS, UHMW, Delrin, Nylon, Ultem, PEEK, Teflon, Vespel, Meldin, Torlon, Kynar, Polypropylene, HDPE, and hundreds more.

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  • PEEK Resin - Vestakeep®
      PEEK Resin & Shapes - Vestakeep® polyetheretherketone (PEEK) made by Evonik Industries AG has all the properties associated with PEEK, including:
    • Thermal index up to 500°F
    • Chemical inertness
    • Inherently low smoke and smoke toxicity
    • Good electrical properties
    • Excellent sliding friction
    • Compounds with HDT up to 600°F

      Vestakeep® PEEK offers superior elongation, ductility, and impact properties which offers advantages to the machinist as well as the OEM. Tougher, less notch sensitive material is easier to machine. Higher resilience resists parts cracking under load and around threaded features which can mean lower part field failures.

      Vestakeep® PEEK also is accepted in the semiconductor process industry due to very low out-gassing and extremely low trace metals like sodium.

      Vestakeep® PEEK often replaces metals to reduce weight, eliminate corrosion, reduce system cost, and improve part reliability in a wide number of industries. Vestakeep® PEEK meets many specifications including: FDA compliant for food contact, is UL registered, and on a lot-to-lot basis Mil Spec 46183. Call Professional Plastics for more information on medical grade resins.
      VESTAKEEP® PEEK Resin is a semi-crystalline thermoplastic that can be melt processed by Injection Molding, Compression Molding, and Extrusion. Professional Plastics VESTAKEEP® PEEK Resins for Injection-Molding & Compression Molding. PEEK plastic is best known for the following properties: Chemical & environmental inertness, Heat resistance, High heat deflection temperature, Dimensional stability due to low water absorption, High hardness & abrasion resistance, Good strength at elevated temperatures, Good electrical properties, Good radiation resistance & Inherent flame resistance.
      VESTAKEEP® Grades (Note: Resins are sold in full cartons only):
    • VESTAKEEP® 4000 G PEEK Resin - high-viscosity, low-flow base grades for products such as gear parts, parts used in medical technology, and films, sheets, and semi-finished products (similar to the Victrex 450G)
    • VESTAKEEP® 2000 CF30 PEEK Resin - medium-viscosity compounds with increased rigidity - injection molding - contains 30% carbon fibers
    • VESTAKEEP® 2000 GF30 PEEK Resin - medium-viscosity, glass fibre-reinforced compound with increased rigidity used in the construction of machinery, apparatuses and aircraft and in the electrical industry
    • VESTAKEEP® 2000 G PEEK Resin - medium-viscosity, easy-flow base grades for products such as gear parts, parts used in medical technology, and films, sheets, and semi-finished products (similar to the Victrex 150G)
    • VESTAKEEP® 4000 CF30 PEEK Resin - carbon fiber-reinforced molding compounds with increased or high rigidity, partially low-warpage,e.g., for housing parts
    • VESTAKEEP® 4000 GF30 PEEK Resin - glass fiber-reinforced molding compounds with increased or high rigidity, partially low-warpage, e.g., for housing parts
    • VESTAKEEP® 4000 FP PEEK Resin - medium- to high-viscosity, unreinforced polyether ether ketone fine powders used as base material or mixed with various additives for compression molding

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  • PET Film Qualifying Questions
      Professional Plastics offers Melinex and Mylar brand PET films direct from Dupont Teijin Films. This is a huge product line with easily 50+ types of product.

      Before submitting inquiries, it helps to understand the following information:
    • What thickness do you need?
    • How is it being used (i.e., what kind of part are you making with it) ?
    • Do you need a surface-treament on one side or both sides of the material?

      Surface-treaments typically fall into two areas:
    • Slip (to prevent material from sticking to itself)
    • Adhesion (to promote bonding of other chemistries to the PET)

      Adhesion types typically fall into these categories:
    • Ink Adhesion - there are different pretreats for UV, solvent and digital inks
    • Coating Adhesion (for hardcoats or erasa-board type applications)
    • Adhesive Adhesion (for pressure-sensitive laminating)

      We also need to know the Put-Up (Sheet or Roll), Size (Thickness, Width & Length and/or Weight) and Annual Usage ?

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  • Phenolic Mil-I-24768
      Mil-I-24768 - Military Specifications for Thermoset Laminates per Mil-I-24768
    • Click Links Below for Pricing, Datasheets, and to Order Online
      The following list indicates the military specifications for thermoset laminate materials:
    • MIL-I-24768/1 (GME) Glass Melamine Laminate
    • MIL-I-24768/2 (GEE) G-10 Glass Epoxy Laminate(non-brominated) Click to Order Online
    • MIL-I-24768/3 (GEB) G-11 Glass Epoxy Laminate Click to Order Online
    • MIL-I-24768/4 (GPO-1) Glass Polyester Laminate Click to Order Online
    • MIL-I-24768/5 (GPO-2) Glass Polyester Laminate Click to Order Online
    • MIL-I-24768/6 (GPO-3) Glass Polyester Laminate Click to Order Online
    • MIL-I-24768/7 (GTE) Glass Teflon Laminate
    • MIL-I-24768/8 (GMG) G-5 Glass Melamine Laminate Click to Order Online
    • MIL-I-24768/9 (NPG) Nylon Fabric Phenolic Laminate Click to Order Online
    • MIL-I-24768/10 (PBE) Paper Base XXX Phenolic Laminate Click to Order Online
    • MIL-I-24768/11 (PBG) Paper Base XX Phenolic Laminate
    • MIL-I-24768/12 (PBM) Paper Base X Phenolic Laminate Click to Order Online
    • MIL-I-24768/13 (FBE) Cotton LE Phenolic Laminate Click to Order Online
    • MIL-I-24768/14 (FBG) Cotton CE Phenolic Laminate Click to Order Online
    • MIL-I-24768/15 (FBI) Cotton L Phenolic Laminate Click to Order Online
    • MIL-I-24768/16 (FBM) Cotton C Phenolic Laminate Click to Order Online
    • MIL-I-24768/17 (GSG) G-7 Glass Silicone Laminate Click to Order Online
    • MIL-I-24768/18 (GPG) G-3 Glass Phenolic Laminate Click to Order Online
    • MIL-I-24768/19 (PBM-P) Paper Phenolic Laminate
    • MIL-I-24768/20 (PBM-PC) Paper Phenolic Laminate
    • MIL-I-24768/21 (PBG-P) Paper Phenolic Laminate
    • MIL-I-24768/22 (PBE-P) Paper Phenolic Laminate
    • MIL-I-24768/23 (PBE-PC) Paper Phenolic Laminate
    • MIL-I-24768/24 (PBM-PF) Paper Phenolic Laminate
    • MIL-I-24768/25 (PBE-PCF) Paper Phenolic Laminate
    • MIL-I-24768/26 (PEE) Paper Epoxy Laminate
    • MIL-I-24768/27 (GEE-F) G-10/FR-4 Glass Epoxy Laminate Click to Order Online
    • MIL-I-24768/28 (GEB-F) Glass Epoxy Laminate

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  • Phenolic Rods - Grade LE Linen
      Linen Phenolic Grade LE (Linen Electrical Grade) provides good mechanical & electrical strength. Recommended for intricate high strength parts. Continuous operating temperature 250°F
    • Electrical Grade Linen Phenolic Rods meet per NEMA LE
    • Standard LE Phenolic Rods are produced as "Sheet Rod" which is centerless ground from LE Sheets.
    • Special Order "Rolled & Molded" Grade is also available with a lead-time (and typically a higher price)

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  • Phenolic Tubes - Grade CE Canvas
      CE Phenolic (Canvas Electrical Grade)Tubes are typically rolled over a mandrel to produce custom-wall thicknesses. These Phenolic Tubes exhibit good mechanical and impact strength with contiunuous operating temperature of 250°F. CE Canvas Phenolic is an excellent insulator and is used in various electrical and mechanical applications.

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  • Phenolic Tubes - Grade X, XX, XXX Paper
      Paper Phenolic is manufactured from high strength paper bonded with a phenolic resin. The resulting material is a tough laminate with a high impact resistance, excellent tensile, compressive and flexural strengths.
    • Typically Manufactured in 40 Inch (3.33 foot), or 48" (4 foot) Lengths
    • For better electrical properties consider CE or LE Phenolic.
    • aka Micarta® Phenolic Tubes
    • Paper phenolic tubes are made in three standard Grades: Grade X, Grade XX & Grade XXX
    • Also See Paper Phenolic Sheets and Rods available from Professional Plastics

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  • Philadelphia Plastic Supply
      Philadelphia Plastic Supply - The city of Philadelphia, Pennsylvania is serviced in 1-2 business days from our Angola, NY location. Established in 1984', Professional Plastics is a leading supplier of plastic sheets, rods, tubing and films. Stock materials include: Plexiglass / Acrylic, Polycarbonate / Lexan®, PVC, ABS, UHMW, Delrin®, Nylon®, Ultem®, PEEK, Teflon®, Vespel®, Meldin®, Torlon®, Kynar® Polypropylene, HDPE, and hundreds more.

      Professional Plastics, Inc.
      1701 Eden Evans Center Road
      Angola, NY 14006
      Toll Free: 866-896-2790
      Fax: 716-686-9310
      sales@proplas.com

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  • Phoenix, Arizona
      Phoenix, AZ
       
      Professional Plastics, Inc.
      4449 S. 38th Pl.
      Phoenix, AZ 85040-2943
      Toll Free: 800-445-3303
      Local: 602-437-4555
      Fax: 602-437-0399
      sales@proplas.com
       

      Phoenix Business Manager: Jacquie Nine
      Hours: Monday thru Friday 8:00 am to 5:00 pm
      Warehouse Size: 22,000 square feet Warehouse
      Commonly Stocked Plastic Materials:Plexiglass, Acrylic, Delrin, Nylon, Acrylic, Polycarbonate, PVC, PP, HDPE, UHMW, Teflon PTFE, Turcite, Vespel, Meldin®, Torlon®, Semitron®, PEEK, Ultem®, Kynar® PVDF, G-10/FR4, CE, LE, X Paper Phenolic & more.
    • Phoenix Local Supplier of Plastic Sheets, Plastic Rods, Plastic Tubing & Plastic Films
    • Your source for plexiglass/acrylic in the Phoenix/Tempe area.

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  • Photo Staging Boxes, Light Boxes & Diffusers
      Photo Staging Boxes, Light Boxes & Diffusers - Do it yourself & save.
      Acrylic and Lexan Polycarbonate Light Diffusing materials are available from Professional Plastics.
      These plastic light diffusers give you soft, natural light... while flash gives you harsh, hard-edged light -- and rude, dark shadows. In your studio, diffusion will give you the professional look. The diffuser hangs between the light and the subject.

      Acrylic is also used for plexiglass light boxes. You can make a light box for less than you can buy one for, and make it the size you need rather than settling for whatever size you can find. A light box can be used to make a back-lit sign for a shop window, display transparencies, or trace graphics or text onto a layer over them.
      Photo Tents & Staging Boxes can be made by anyone from Acrylic or PVC Plastics.. These stages can help you take photographs that will show full detail and accurate color in a soft natural lighting environment with no distracting shadows or annoying glare. Creating a detachable light hood will softed diffused surround lighting from daylight corrected fluorescent bulbs and an acrylic light diffuser panel. The interior should be made using a bright white reflective plastic which helps light the object being photographed while eliminating distracting shadows. The studio should utilize both White and Black backdrops.

    • Acrylic Sheets - ORDER ONLINE

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  • Pittsburgh Plastic Supplier
      Pittsburgh Plastic Supply - The city of Pittsburgh, Pennsylvania is serviced in 1-2 business days from our Cleveland, OH and our Angola, NY locations. Established in 1984', Professional Plastics is a leading supplier of plastic sheets, rods, tubing and films. Stock materials include: Plexiglass / Acrylic, Polycarbonate / Lexan, PVC, ABS, UHMW, Delrin, Nylon, Ultem, PEEK, Teflon, Vespel, Meldin, Torlon, Kynar, Polypropylene, HDPE, and hundreds more.

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  • Plano Texas Plastic Supplier
      Plano Texas Plastic Supplier - The city of Plano is serviced by our Carrollton Texas location. Established in 1984', Professional Plastics is a leading supplier of plastic sheets, rods, tubing and films. Stock materials include: Plexiglass / Acrylic, Polycarbonate / Lexan, PVC, ABS, UHMW, Delrin, Nylon, Ultem, PEEK, Teflon, Vespel, Meldin, Torlon, Kynar, Polypropylene, HDPE, and hundreds more. Our 50,000 square foot location stocks the largest selection of engineering plastics in region.

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  • Plast-Kut Knife for Cutting Coroplast
      Plast-Kut Knife for Cutting Coroplast is available from Professional Plastics. This tool is great for cutting sheets for use as signs, boxes, cylinders & other custom products. A must have for any Coroplast user.

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  • Plastic Parts - CNC Machining
      Plastic Parts - CNC Machining of plastics.
      Professional Plastics and it's partners can provide precision turn-key plastic parts to your specifications. We offer the widest variety of high-performance engineering plastics in the industry and have a well-established record as a quality supply partner to companies in the aerospace and semiconductor industries. Precision manufactured plastic machined parts are available from more than 500 different materials including thermoplastics, thermoset laminates and composites and cermic materials.

    • For a competitive price & fast turn-around, E-mail or Fax us your CAD drawing of your cnc plastic parts now.
    • E-Mail: sales@proplas.com Phone (888) 995-7767 or Fax (866) 776-7527

      Machining of Plastic Parts includes: Bearings, Sheaves, Washers, Thrust Washers, Guide Rails, Machine Guards, Wear Pads, Clamping Rings, Retaining Rings, Screws, Sliders, Bumpers, Rollers, Splines, Insulators, Lantern Rings, Nests, Sockets, Manifolds, Valves, Clamps, Seal Rings, Valve Seats, Layrinth Seals, Wear Rings, Seals, Mandrels, Connectors, Spur Gears and more.

      Don't know what material to use ? - Try our Material Design Tool - Sortable Material Data Sheets.

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  • Plastic Shim Stock - color coded
      Plastic Shim Stock - color coded
      Professional Plastics offers custom plastic shims, shim sets and washers in thicknesses from .0005" to 1". These plastic shims are fabricated out of a variety of plastic materials, including color-coded plastics, nylon, vinyl, acetate, polypropylene, polyester and polyethylene, to name a few.
      Professional plastics offers Practi-Shim™ color-coded shim stock in sheets and roll stock. Plastic shim stock is color-coded, so the user can tell the thickness at a glance.
    • Practi-shim(TM) is a registered trademark of Accutrex Products Inc.
    • Note: We also offer Kapton & Kaptrex brand polyimide film for aerospace shims.

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  • Plastic Supply - Plastics Supplier
      Professional Plastics is a Plastics Supplier of industrial plastic sheets, rods, tubing and films. General industrial plastic supply materials include: Delrin, Nylon, PVC, UHMW, HDPE, Polypropylene and more. Fluoropolymer plastic supply materials include: Teflon, Rulon, PVDF, PFA, FEP, Kel-F, Tefzel, Halar and others. High-performance industrial plastic supply products include: Vespel, Torlon, Meldin, PEEK, Techtron, Semitron and others. Professional Plastics supplies more than 500 different plastic materials online
    • Visit our various product pages for these materials and more.
    • Wholesale & Retail Customers are welcome.

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  • Plastic Supply Boston
      Boston Plastic Supply - The city of Boston, Massachusetts is serviced in 1-2 business days from our Angola, NY location. Established in 1984', Professional Plastics is a leading supplier of plastic sheets, rods, tubing and films. Stock materials include: Plexiglass / Acrylic, Polycarbonate / Lexan®, PVC, ABS, UHMW, Delrin®, Nylon®, Ultem®, PEEK, Teflon®, Vespel®, Meldin®, Torlon®, Kynar® Polypropylene, HDPE, and hundreds more.

      Professional Plastics, Inc.
      1701 Eden Evans Center Road
      Angola, NY 14006
      Toll Free: 866-896-2790
      Fax: 716-686-9310
      sales@proplas.com

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  • Plastic Supply Canada
      Professional Plastics, Inc. - Canada Sales and Support for Plastic Sheets, Plastic Rods, Plastic Tubing and Plastic Film. Canadian customers are served by Professional Plastics' locations in Angola, New York and Seattle, Washington. The New York location serves customers in Ontario, Ottawa and Quebec. Our Seattle, Washington location serves customers in British Columbia, Alberta, Saskatchewan and Manitoba. We provide daily shipments to both Eastern and Western Canada with typical deliveries in 1-3 days from Professional Plastics.
      Key markets include Toronto, Edmonton, Vancouver, Ottawa, Montreal, Calgary, Winnipeg, & Quebec City.

      Common Materials Shipped to Canada include:
      UHMW, Nylon, Acetal, Teflon®, PTFE, PVC, PEEK, HDPE, PVDF, Delrin®, Tygon®, Tivar®, Phenolic, Vespel®, Ultem®, in Sheets, Rods, Tubes, Tubing, Bar and Slab, More than 500 materials available online from the top global plastic shapes manufacturers. Supply partners include MCAM-Quadrant, Plaskolite Covestro, Rochling, Cyro Evonik, Vycom, Kleerdex, Boltaron, and many more.

      Scroll Down to Request A Quote Online or Call us Today - Canadian Toll-Free (888) 995-7767

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  • Plastic Vacuum Forming
      Vacuum forming (also known as thermoforming or pressure-forming) is a way to make thin plastic products by heating a plastic sheet until it is soft, then lowering the plastic sheet over a pattern at the same time the air is withdrawn from between the plastic and the pattern. When the air is withdrawn, a vacuum is created, and the plastic sheet is pressed to the pattern by atmospheric pressure. Vacuum forming typically makes "one-sided" or "shell" type parts.

      During the vacuum forming process, a sheet of heated plastic material is placed over a male or female mold. The mold then moves towards the sheet and presses against it to create a seal. Next, the application of a vacuum draws out the air between the mold and the sheet so that the plastic conforms to the mold exactly. This is accomplished through venting holes in the mold that are joined to vacuum lines. The mold also has a water cooling system integrated into it that brings the temperature of the plastic to the set temperature needed. When the curing temperature is reached and the piece is formed, air blows back into the mold and separates the new part from the mold.

      Vacuum forming services produce plastic parts for various industries, such as the food, cosmetic, medical, electronics, entertainment, household products, toys, athletic equipment, appliance, automotive, office supplies and clothing industries.

      Applications: "Blister" and "bubble" display packaging, cases, aircraft components, cabinets, compartments, instrument trays, instrument panels, food trays, tubs, containers, bathtubs, hot tubs and spas, shower liners, props.

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  • Plastics
      Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials suitable for the manufacture of industrial products. Plastics are typically polymers of high molecular weight, and may contain other substances to improve performance and/or reduce costs. The word Plastic derives from the Greek (plastikos) meaning fit for molding, and (plastos) meaning molded. It refers to their malleability, or plasticity during manufacture, that allows them to be cast, pressed, or extruded into an enormous variety of shapes—such as films, fibers, plates, tubes, bottles, boxes, and much more. The common word plastic should not be confused with the technical adjective plastic, which is applied to any material which undergoes a permanent change of shape (plastic deformation) when strained beyond a certain point. Aluminum, for instance, is plastic in this sense, but not a plastic in the common sense; in contrast, in their finished forms, some plastics will break before deforming and therefore are not plastic in the technical sense.

      There are two types of plastics: Thermoplastics and Thermosets.
    • Thermoplastics will soften and melt if enough heat is applied; examples are polyethylene, polystyrene, and PTFE.
    • Thermosets do not soften or melt no matter how much heat is applied. Examples: Micarta, GPO, G-10

      Overview:
      Plastics can be classified by their chemical structure, namely the molecular units that make up the polymer's backbone and side chains. Some important groups in these classifications are the acrylics, polyesters, silicones, polyurethanes, and halogenated plastics. Plastics can also be classified by the chemical process used in their synthesis; e.g., as condensation, polyaddition, cross-linking, etc. Other classifications are based on qualities that are relevant for manufacturing or product design. Examples of such classes are the thermoplastic and thermoset, elastomer, structural, biodegradable, electrically conductive, etc. Plastics can also be ranked by various physical properties, such as density, tensile strength, glass transition temperature, resistance to various chemical products, etc. Due to their relatively low cost, ease of manufacture, versatility, and imperviousness to water, plastics are used in an enormous and expanding range of products, from paper clips to spaceships. They have already displaced many traditional materials, such as wood; stone; horn and bone; leather; paper; metal; glass; and ceramic, in most of their former uses. The use of plastics is constrained chiefly by their organic chemistry, which seriously limits their hardness, density, and their ability to resist heat, organic solvents, oxidation, and ionizing radiation. In particular, most plastics will melt or decompose when heated to a few hundred degrees celsius. While plastics can be made electrically conductive to some extent, they are still no match for metals like copper or aluminum.[citation needed] Plastics are still too expensive to replace wood, concrete and ceramic in bulky items like ordinary buildings, bridges, dams, pavement, railroad ties, etc.

      Chemical Structure:
      Common thermoplastics range from 20,000 to 500,000 in molecular mass, while thermosets are assumed to have infinite molecular weight. These chains are made up of many repeating molecular units, known as repeat units, derived from monomers; each polymer chain will have several thousand repeat units. The vast majority of plastics are composed of polymers of carbon and hydrogen alone or with oxygen, nitrogen, chlorine or sulfur in the backbone. (Some of commercial interests are silicon based.) The backbone is that part of the chain on the main "path" linking a large number of repeat units together. To vary the properties of plastics, both the repeat unit with different molecular groups "hanging" or "pendant" from the backbone, (usually they are "hung" as part of the monomers before linking monomers together to form the polymer chain). This customization by repeat unit's molecular structure has allowed plastics to become such an indispensable part of twenty first-century life by fine tuning the properties of the polymer.

      Some plastics are partially crystalline and partially amorphous in molecular structure, giving them both a melting point (the temperature at which the attractive intermolecular forces are overcome) and one or more glass transitions (temperatures above which the extent of localized molecular flexibility is substantially increased). So-called semi-crystalline plastics include polyethylene, polypropylene, poly (vinyl chloride), polyamides (nylons), polyesters and some polyurethanes. Many plastics are completely amorphous, such as polystyrene and its copolymers, poly (methyl methacrylate), and all thermosets.

      History of Plastics:
      The first human-made plastic was invented by Alexander Parkes in 1855; he called this plastic Parkesine (later called celluloid). The development of plastics has come from the use of natural plastic materials (e.g., chewing gum, shellac) to the use of chemically modified natural materials (e.g., rubber, nitrocellulose, collagen, galalite) and finally to completely synthetic molecules (e.g., bakelite, epoxy, polyvinyl chloride, polyethylene).

      Types of Plastics:
      Cellulose-based plastics
      In 1855, an Englishman from Birmingham named Alexander Parkes developed a synthetic replacement for ivory which he marketed under the trade name Parkesine, and which won a bronze medal at the 1862 World's fair in London. Parkesine was made from cellulose (the major component of plant cell walls) treated with nitric acid and a solvent. The output of the process (commonly known as cellulose nitrate or pyroxilin) could be dissolved in alcohol and hardened into a transparent and elastic material that could be molded when heated. By incorporating pigments into the product, it could be made to resemble ivory.

      Bakelite®
      The first plastic based on a synthetic polymer was made from phenol and formaldehyde, with the first viable and cheap synthesis methods invented in 1909 by Leo Hendrik Baekeland, a Belgian-born American living in New York state. Baekeland was searching for an insulating shellac to coat wires in electric motors and generators. He found that mixtures of phenol (C6H5OH) and formaldehyde (HCOH) formed a sticky mass when mixed together and heated, and the mass became extremely hard if allowed to cool. He continued his investigations and found that the material could be mixed with wood flour, asbestos, or slate dust to create "composite" materials with different properties. Most of these compositions were strong and fire resistant. The only problem was that the material tended to foam during synthesis, and the resulting product was of unacceptable quality. Baekeland built pressure vessels to force out the bubbles and provide a smooth, uniform product. He publicly announced his discovery in 1912, naming it bakelite. It was originally used for electrical and mechanical parts, finally coming into widespread use in consumer goods in the 1920s. When the Bakelite patent expired in 1930, the Catalin Corporation acquired the patent and began manufacturing Catalin plastic using a different process that allowed a wider range of coloring. Bakelite was the first true plastic. It was a purely synthetic material, not based on any material or even molecule found in nature. It was also the first thermosetting plastic. Conventional thermoplastics can be molded and then melted again, but thermoset plastics form bonds between polymers strands when cured, creating a tangled matrix that cannot be undone without destroying the plastic. Thermoset plastics are tough and temperature resistant. Bakelite® was cheap, strong, and durable. It was molded into thousands of forms, such as radios, telephones, clocks, and billiard balls. Phenolic plastics have been largely replaced by cheaper and less brittle plastics, but they are still used in applications requiring its insulating and heat-resistant properties. For example, some electronic circuit boards are made of sheets of paper or cloth impregnated with phenolic resin. Bakelite® is now a registered trademark of Bakelite GmbH.

      Polystyrene & PVC
      After the First World War, improvements in chemical technology led to an explosion in new forms of plastics. Among the earliest examples in the wave of new plastics were polystyrene (PS) and polyvinyl chloride (PVC), developed by IG Farben of Germany. Polystyrene is a rigid, brittle, inexpensive plastic that has been used to make plastic model kits and similar knick-knacks. It would also be the basis for one of the most popular "foamed" plastics, under the name styrene foam or Styrofoam. Foam plastics can be synthesized in an "open cell" form, in which the foam bubbles are interconnected, as in an absorbent sponge, and "closed cell", in which all the bubbles are distinct, like tiny balloons, as in gas-filled foam insulation and flotation devices. In the late 1950s, High Impact Styrene was introduced, which was not brittle. It finds much current use as the substance of signage, trays, figurines and novelties. PVC has side chains incorporating chlorine atoms, which form strong bonds. PVC in its normal form is stiff, strong, heat and weather resistant, and is now used for making plumbing, gutters, house siding, enclosures for computers and other electronics gear. PVC can also be softened with chemical processing, and in this form it is now used for shrink-wrap, food packaging, and rain gear.

      Nylon
      The real star of the plastics industry in the 1930s was polyamide (PA), far better known by its trade name nylon. Nylon was the first purely synthetic fiber, introduced by DuPont Corporation at the 1939 World's Fair in New York City. In 1927, DuPont had begun a secret development project designated Fiber66, under the direction of Harvard chemist Wallace Carothers and chemistry department director Elmer Keiser Bolton. Carothers had been hired to perform pure research, and he worked to understand the new materials' molecular structure and physical properties. He took some of the first steps in the molecular design of the materials. His work led to the discovery of synthetic nylon fiber, which was very strong but also very flexible. The first application was for bristles for toothbrushes. However, Du Pont's real target was silk, particularly silk stockings. Carothers and his team synthesized a number of different polyamides including polyamide 6.6 and 4.6, as well as polyesters. It took DuPont twelve years and US$27 million to refine nylon, and to synthesize and develop the industrial processes for bulk manufacture. With such a major investment, it was no surprise that Du Pont spared little expense to promote nylon after its introduction, creating a public sensation, or "nylon mania". Nylon mania came to an abrupt stop at the end of 1941 when the USA entered World War II. The production capacity that had been built up to produce nylon stockings, or just nylons, for American women was taken over to manufacture vast numbers of parachutes for fliers and paratroopers. After the war ended, DuPont went back to selling nylon to the public, engaging in another promotional campaign in 1946 that resulted in an even bigger craze, triggering the so called nylon riots. Subsequently polyamides 6, 10, 11, and 12 have been developed based on monomers which are ring compounds; e.g. caprolactam.nylon 66 is a material manufactured by condensation polymerization. Nylons still remain important plastics, and not just for use in fabrics. In its bulk form it is very wear resistant, particularly if oil-impregnated, and so is used to build gears, bearings, bushings, and because of good heat-resistance, increasingly for under-the-hood applications in cars, and other mechanical parts.

      Natural Rubber
      Natural rubber is an elastomer (an elastic hydrocarbon polymer) that was originally derived from latex, a milky colloidal suspension found in the sap of some plants. It is useful directly in this form (indeed, the first appearance of rubber in Europe is cloth waterproofed with unvulcanized latex from Brazil) but, later, in 1839, Charles Goodyear invented vulcanized rubber; this a form of natural rubber heated with, mostly, sulfur forming cross-links between polymer chains (vulcanization), improving elasticity and durability. Plastic is very known in these areas.

      Synthetic Rubber
      The first fully synthetic rubber was synthesized by Lebedev in 1910. In World War II, supply blockades of natural rubber from South East Asia caused a boom in development of synthetic rubber, notably Styrene-butadiene rubber (a.k.a. Government Rubber-Styrene). In 1941, annual production of synthetic rubber in the U.S. was only 231 tons which increased to 840 000 tons in 1945. In the space race and nuclear arms race, Caltech researchers experimented with using synthetic rubbers for solid fuel for rockets. Ultimately, all large military rockets and missiles would use synthetic rubber based solid fuels, and they would also play a significant part in the civilian space effort.

      Polymethyl methacrylate (PMMA), better known as Plexiglass acrylic. Although acrylics are now well known for their use in paints and synthetic fibers, such as fake furs, in their bulk form they are actually very hard and more transparent than glass, and are sold as glass replacements under trade names such as Acrylite, Perspex, Plexiglas and Lucite. These were used to build aircraft canopies during the war, and its main application now is large illuminated signs such as are used in shop fronts or inside large stores, and for the manufacture of vacuum-formed bath-tubs.

      Polyethylene (PE), sometimes known as polythene, was discovered in 1933 by Reginald Gibson and Eric Fawcett at the British industrial giant Imperial Chemical Industries (ICI). This material evolved into two forms, Low Density Polyethylene (LDPE), and High Density Polyethylene (HDPE). PEs are cheap, flexible, durable, and chemically resistant. LDPE is used to make films and packaging materials, while HDPE is used for containers, plumbing, and automotive fittings. While PE has low resistance to chemical attack, it was found later that a PE container could be made much more robust by exposing it to fluorine gas, which modified the surface layer of the container into the much tougher polyfluoroethylene.

      Polypropylene (PP), which was discovered in the early 1950s by Giulio Natta. It is common in modern science and technology that the growth of the general body of knowledge can lead to the same inventions in different places at about the same time, but polypropylene was an extreme case of this phenomenon, being separately invented about nine times. The ensuing litigation was not resolved until 1989. Polypropylene managed to survive the legal process and two American chemists working for Phillips Petroleum, J. Paul Hogan and Robert Banks, are now generally credited as the primary inventors of the material. Polypropylene is similar to its ancestor, polyethylene, and shares polyethylene's low cost, but it is much more robust. It is used in everything from plastic bottles to carpets to plastic furniture, and is very heavily used in automobiles.

      Polyurethane (PU) was invented by Friedrich Bayer & Company in 1937, and would come into use after the war, in blown form for mattresses, furniture padding, and thermal insulation. It is also one of the components (in non-blown form) of the fiber spandex.

      Epoxy - In 1939, IG Farben filed a patent for polyepoxide or epoxy. Epoxies are a class of thermoset plastic that form cross-links and cure when a catalyzing agent, or hardener, is added. After the war they would come into wide use for coatings, adhesives, and composite materials. Composites using epoxy as a matrix include glass-reinforced plastic, where the structural element is glass fiber, and carbon-epoxy composites, in which the structural element is carbon fiber. Fiberglass is now often used to build sport boats, and carbon-epoxy composites are an increasingly important structural element in aircraft, as they are lightweight, strong, and heat resistant.

      PET, PETE, PETG, PET-P (polyethylene terephthalate)
      Two chemists named Rex Whinfield and James Dickson, working at a small English company with the quaint name of the Calico Printer's Association in Manchester, developed polyethylene terephthalate (PET or PETE) in 1941, and it would be used for synthetic fibers in the postwar era, with names such as polyester, dacron, and Terylene. PET is less gas-permeable than other low-cost plastics and so is a popular material for making bottles for Coca-Cola and other carbonated drinks, since carbonation tends to attack other plastics, and for acidic drinks such as fruit or vegetable juices. PET is also strong and abrasion resistant, and is used for making mechanical parts, food trays, and other items that have to endure abuse. PET films are used as a base for recording tape.

      PTFE (polytetrafluoroethylene) (aka Teflon®)
      One of the most impressive plastics used in the war, and a top secret, was polytetrafluoroethylene (PTFE), better known as Teflon, which could be deposited on metal surfaces as a scratch-proof and corrosion-resistant, low-friction protective coating. The polyfluoroethylene surface layer created by exposing a polyethylene container to fluorine gas is very similar to Teflon. A DuPont chemist named Roy Plunkett discovered Teflon by accident in 1938. During the war, it was used in gaseous-diffusion processes to refine uranium for the atomic bomb, as the process was highly corrosive. By the early 1960s, Teflon adhesion-resistant frying pans were in demand.

      Polycarbonate - Lexan is a high-impact polycarbonate originally developed by General Electric. Makrolon® and Tuffak are tradenames high-impact polycarbonate plastic made by Plaskolite.

      Biodegradable (Compostable) Plastics
      Research has been done on biodegradable plastics that break down with exposure to sunlight (e.g., ultra-violet radiation), water or dampness, bacteria, enzymes, wind abrasion and some instances rodent pest or insect attack are also included as forms of biodegradation or environmental degradation. It is clear some of these modes of degradation will only work if the plastic is exposed at the surface, while other modes will only be effective if certain conditions exist in landfill or composting systems. Starch powder has been mixed with plastic as a filler to allow it to degrade more easily, but it still does not lead to complete breakdown of the plastic. Some researchers have actually genetically engineered bacteria that synthesize a completely biodegradable plastic, but this material, such as Biopol, is expensive at present. The German chemical company BASF makes Ecoflex, a fully biodegradable polyester for food packaging applications. Gehr Plastics has developed ECOGEHR, a full-range of Bio-Polymer Shapes distributed by Professional Plastics.

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