Coil bobbins

Medical uses for Udel resin include surgical trays, nebulizers, flow controllers for blood, and respiration regulators. Transportation applications center around automotive fuse housings, electrical connectors, and switches. Electrical and electronic end uses include coil bobbins, housings, connectors, bushings, capacitor film, and business machine parts. EinaHy, water, heater dip tubes, milking machine parts, pollution control equipment, and some filtration membranes are made. 

The generally very good electrical insulation properties coupled with heat resistance and non-burning behaviour indicate usage in coil bobbins, printed circuit boards (which resist heat of soldering), lamp bulb bases and TV... 

Spule,/. spooi (iJlec.) coil bobbin quill. 

Internal components and current carrying devices, brush holders, coil bobbins forms... 

Electrical components (e.g., boxes, relays, coils, bobbins)... 

Exceptional electrical properties and temperature resistance qualify the material for numerous electrical parts—connectors, coil bobbins, light sockets, terminal blocks, fuse holders, and motor parts, PBT provides weight reduction of final parts. PBT has replaced a number of thermoset materials and is particularly popular for appliance housings and fibers for paint brushes. 

Electrical and electronics are the largest end uses for PPS. Principal advantages of PPS are strength at high temperature, dimensional stability, flame and arc resistance, and precision moldability. Products are connectors, coil bobbins, relays, and switches. The growth of electrical and electronic end uses is 10%. Appliances are the second largest ends uses for PPS resins as a replacement for phenolic, but also for metal parts. 

Major polymer applications aircraft interiors, multipin connectors, coil bobbins, integrated circuits sockets, fiber optics connectors, dip switches, automotive fuses, printed circuit boards, transformer wire coatings, microwave cookware, sight glasses, membranes, medical applications (due to the resistance to different methods of sterilization), coatings... 

Major polymer applications automotive lighting, ignition and braking systems, carburetor parts, fuel components, chip carriers, phone jacks, IC card connectors, transistor encapsulation, tape recorder head moimts, relay components, motor fans, coil bobbins, sockets, relay units, food choppers, steam hair drier parts, lamp sockets, microwave oven components, pump housings, impeller diffusers, oil well valves, halogen lamp sockets... 

Susteel. [Tosoh] FPS engineering plastic fwelec. and electronic parts (switrii bases, relay comptments, cormectns, coil bobbins), appliance coiiptments, automotive implies. 

Connector, tie straps, wire coil, bobbins, tuner gears... 

High-temperature coil bobbins, aircraft window reveals, automatic transmission housing, firemen s helmets, gas compressor valves, carbon fiber composites, fiexible printed circuit boards... 

Automobile applications of PBT include window and door hardware, speedometer frames and gears, servo pistons, and automobile ignition system components (distributor caps, coil bobbins, and rotors). In addition, it is used as bases, handles, and housings for small appliances (toasters, cookers, fryers and irons) as well as small industrial pump housing, impellers, and support brackets, gears, showerhead and faucet components, and consumer products like buckles, clips, buttons, and zippers. 

Polysulfones have found widespread use where good dimensional stability at elevated temperatures is required and fabrication is done by injection molding. Some products made from polysulfones are electrical components, connectors, coil bobbins, relays, and appliances operating at high temperatures (e.g., hair driers, fan heaters, microwave ovens, lamp housings and bases). 

In order to miniaturize products and to improve productivity in the electronics industry, a method of soldering resinous electronic parts has been developed for affixing parts, such as connectors, switches, relays and coil bobbins to printed circuit board (PCB). This method is addressed as surface-mount technology. 

Utilizing such characteristics, coil bobbins of 0.1 mm thickness and 10 mm length have been commercialized. 

Ethyl decanoate coil bobbins Phenolic resin... 

This is mainly due to the difficulty and cost in reaching the high standards of flame retardancy required in electronics and building industries with PP compoimds. The cause of this difficulty is the high crystallinity and flammability of PP. FRPP applications are foimd in various fields such as electrical, covering lamp sockets, coil bobbins, connectors, TV yokes and, to a lesser extent wire and cable pipes for water discharge fibres in textile products film and sheets for roofing. 

Some molded parts have configurations which require portions of the cavity to be removed in order for the part to be ejected. Solenoid coil bobbins, as an example, consist of a cylindrical body around which wire will be wound, with two large flat flanges at each end of the cylindrical body to keep the wire contained within the length of the body. Additionally, there is a hole through the length of the cylindrical body to accommodate the plunger of the solenoid assembly. 

Figure 6.26 Open mold halves for injection molding coil bobbins and using vacuum venting to improve quality of thermosetting parts. The foiu" angled cam pins enter the holes in the moving mold half to cause the mandrels to shde into place as the mold closes and to slide them out as the mold opens prior to bobbin ejection.

Coil bobbin Glass-reinforced, FR property Dielectric strength, high HDT,... 

Electrical and electronic parts, various types of connectors (board-to-board connectors, flexible printed circuit connectors, card connectors, flash memory connectors, optical connectors), various types of sockets (PGA sockets, ZIF sockets, SIMM sockets, RIMM sockets, SO-DIMM sockets), relay casings, switches, quartz oscillators, piezoelectric elements, capacitors, sensors, coil bobbins, optical sensors, and encapsulant... 

Electrical and Electronic. Polyarylates provide the excellent temperature resistance and flame retardancy needed for electrical connectors, relay housings, coil bobbins, and switch and fuse covers. 

DuPont s Zenite 7130, an LCP reinforced by 30% glass fibre which features a HDT of 289 and low creep at high temperatures, is used by Epcos, for coil bobbins in its range of transformers, chokes and other surface mount devices. Another LCP glass reinforced compound, Zenite 6130L, is used by the Swiss Sonceboz company for coil bobbins and the over-moulding of the stator of its 4000-Series of torque motors. 

Poly(phenylenesulfides) are used where resistance to heat and chemicals is required, for example in the chemical process industry (pump housings, impellers, valves, metering devices, tanks, coil bobbins) [13]. 

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