Polymers in Sport and Leisure

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References and Abstracts Item 250 Plastics News(USA) 9, No.31, 29th Sept.1997, p.24 COMPOSITES GIVE SNOW BOARD RIDERS EDGE Renstrom R Rusty Snowboards is adding CFRP strips to allow team riders and advanced boarders to hold high-speed turns. Several dozen attendees at the Action Sports Retailer exhibition spent hours after the exhibition at Rusty’s San Diego factory, and 40 constructed their own ‘snowslider’ with the graphite strips and a choice of board size and graphic colour. Each fibre strip is laid alternately between three pieces of wood core. The company has noted that a competitor has been experimenting with CFRP placement, but have found that it is unsatisfactory to put it along the rails as it is difficult to bond the materials. Rusty Snowboards employs 12, occupies 5,000 sq.ft. and can produce 60 boards daily. The shop produced 3,500 units in 1996, its first season, and is now producing 5,000-6,000 boards/yr. Details are given. RUSTY SNOWBOARDS; HOBIE SNOWBOARDS; HOBIE DESIGNS INC. USA Accession no.657853 Item 251 Rubber Technology International 1997, p.210-2 TENSION AND LENGTH CONTROL FOR YARNS AND TOWS IN FIBRE-REINFORCED STRUCTURES Nick A Holtex Textilmaschinen GmbH In a number of manufacturing processes (e.g. filament winding, pultrusion, tape laying, laminating, tyre cord weaving, sectional warping), direct beaming, warp knitting and multi-axial weft insertion tows and fibres are used that are made from glass, carbon, aramid, polyamide, polyester, PP or PE. Both the processes and the individual fibres are very different, but for all a constant thread tension during manufacturing is fundamental for high-quality products to be produced. Such products include fibre-reinforced plastics for aircraft, cars, sports equipment, protective clothing, machine components and prepregs. Poor quality often occurs as a result of delamination that leads to early product failure. Causes of delamination can be detected through investigation of the fibre, the fibre-matrix system or the process technology that is applied. Emphasis is placed on the behaviour of fibres and tows as they are tangentially wound. 2 refs. EUROPEAN COMMUNITY; EUROPEAN UNION; GERMANY; WESTERN EUROPE Accession no.657676 Item 252 Rubber Technology International 1997, p.19-24 DEVELOPING A HIGH-PERFORMANCE SNOWMOBILE VARIABLE SPEED BELT Shepher J; Westhoff W; Breed J Gates Rubber Co. Producing an effective design for a high-performance variable speed belt by Gates Rubber for snowmobile applications requires the careful balancing of a number of conflicting properties related to functionality and durability. A detailed test and evaluation programme was essential in order to achieve an optimised design. Design aspects covered include the Snow-V variable speed transmission; transmission functions and their interactions; belt structure, component design and geometric design; and development validation and testing. USA Accession no.657634 Item 253 Advanced Materials Newsletter 19, No.17, 8th Sept.1997, p.2-3 INTEK INTRODUCES EXTRUDED FIBRE COMPOSITES SYSTEM Intek Plastics has introduced VHME (Very High Modulus Extrusion) Long Fiber Extrusions based on a new proprietary thermoplastic material system and process that is claimed to be a replacement for wood, pultrusions and metals. This patent-pending process extrudes thermoplastic composite based on Celstran long glass fiber-reinforced moulding compound materials. The company claims that the material system is stiffer than most woods, more weatherable than pultrusions, and will not corrode like metals (mainly steel and aluminium). Reinforced VHME is initially available in square tubular shapes only. The market potential for VHME is said to be comparable to the estimated 60-70 million US dollars market for injection moulding of long fiber compounds, with annual growth of about 20%. A market study has determined that VHME has potential use in more than 130 applications including office furniture, appliances, sporting goods, transportation, windows, doors, wastewater and sewage treatment, corrosive environments and commercial refrigeration. Details are given. INTEK PLASTICS INC. USA Accession no.656958 Item 254 Designed for life:Composites ’94. Publication number 293/7. Conference proceedings. London, BPF, 1994, p.27-35. 627 RESIN TRANSFER MOULDING OF MARINE PRODUCTS Searle T; Short D; Chudley J; Tate A; Bucknell S 68 © Copyright 2001 Rapra Technology Limited
References and Abstracts Advanced Composites Manufacturing Centre; Plymouth,University (BPF) The author describes three projects which utilise the advantages of composite materials and the cost effective benefits of resin transfer moulding (RTM). A range of composite propellers as an alternative to manganese bronze and nickel aluminium bronze (NAB) versions have been manufactured and tested. Outboard motor propellers can be damaged when used in shallow waters. Replacing or refurbishing a metal propeller is expensive. The composite alternative gives similar performance and is a cost effective replacement. Also NAB propeller support brackets are heavy and costly components to produce. This paper explains how a demonstrator of part of a propeller support bracket has been made which shows significant weight savings as well as considerable potential cost savings. 5 refs. EUROPEAN COMMUNITY; EUROPEAN UNION; UK; WESTERN EUROPE Accession no.656361 Item 255 Plastics World 55, No.10, Oct.1997, p.44 TPUS Bucher J Thermoplastic urethanes are the oldest thermoplastic elastomers in commercial use. In recent years, TPUs have been used as a flexible energy-absorbing matrix structure in high-performance footwear and in sports equipment. This article outlines TPU properties and part design considerations. USA Accession no.654684 Item 256 Plastics News(USA) 9, No.21, 21st July 1997, p.13/31 ALLIEDSIGNAL TAKES INTEREST IN SPORTING GOODS MARKET Esposito F AlliedSignal is reported to have been attempting to build on its 4-5% share that sports goods applications have in its product range. Spalding Sports Worldwide is testing golf balls with covers made of the company’s Capron nylon resins, which are in the company’s Ultra-Tough resin group. The new surface, which can be mixed with traditional ionomer materials, offers increased distance. The ball is being tested to see if it meets Professional Golf Association standards. The company says that there is also a large untapped market for protective helmets in college, high school and amateur sports. Brief details are given. ALLIEDSIGNAL PLASTICS; SPALDING SPORTS WORLDWIDE USA Accession no.654461 Item 257 High Performance Textiles July 1997, p.2 POLYETHYLENE NAPHTHALATE FIBRE MAKES TOUGHER SAILCLOTHS A polyethylene naphthalate (PEN) fibre in development by AlliedSignal is reported to be showing enormous potential for high quality sailcloths. Designated Pentex, the fibre can be woven to give fabrics which are 2.5 times lower in stretch than traditional sails of the same weight. This suggests the possibility of making much lighter weight sails with comparable performance. The fibre has already been used to make Super Modulus sails by Challenge Sailcloth. When used for racing yachts, the fabric has proved to have an excellent flex life as well as good resistance to UV radiation. Furthermore, fabrics based on Pentex can be heat-set and shrunk at elevated temperatures which produces a sailcloth that has the durability of a woven material but which compares in performance with a laminate, according to Challenge Sailcloth. Details are given. ALLIEDSIGNAL INC. USA Accession no.651665 Item 258 Plastics News(USA) 9, No.15, 9th June 1997, p.28 COLD NOT REQUIRED FOR ICE SKATING ANYMORE Esposito F This article describes Super Ice, a product manufactured by Super Ice America of Colorado Springs. Super Ice is a hard plastic surface marketed as a low-cost substitute for ice rinks. The product is made of sections of high density polyethylene attached to both sides of a thin piece of wood. The sections are joined using a slip tongue-and groove system, holding the panels in place. The product is said to have 90% of the glide factor of real ice and has a life of at least five years. SUPER ICE AMERICA USA Accession no.651129 Item 259 Plastics News(USA) 9, No.16, 16th June 1997, p.25 PLASTICS HELP SNOWMOBILES LOSE WEIGHT Pryweiler J In what could open the door to a sparkling new market for gas-assisted injection moulding, Mid-Central Plastics has started making snowmobile bumpers in long-fibrereinforced thermoplastics for Arctic Cat. The front bumpers, which went into production in April, represent an uncommon marriage of long-fibre materials to gas- © Copyright 2001Rapra Technology Limited 69
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Page 103 and 104: Subject Index A ABRASION, 133 305 A
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Page 107 and 108: Subject Index DOME, 320 DOMESTIC EQ
Page 109 and 110: Subject Index 168 228 324 340 379 F
Page 111 and 112: Subject Index IONENE POLYMER, 166 I
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