Vespel® Parts in Material Handling Equipment
Have a Tough Material Handling Job? DuPont™ Vespel® Parts Have Solutions
In systems for moving, molding or testing challenging products through the manufacturing chain, DuPont™ Vespel® parts can deliver major performance and cost benefits compared to metal, ceramic, PEEK and other nonmetallic components in material handling equipment.
Vespel® parts have a unique combination of properties of high value for components of material handling equipment.
- Resistance to very high temperatures
- Low wear, even under extreme conditions
- Reduced friction
- Light weight
- Low thermal conductivity
- Excellent dielectric properties
Solutions for High-Temperature Environments
Metal Fabrication. In conveyors for hot aluminum extrusions, Vespel® parts provide benefits in replacing aramid fiber for rollers covers pads. They reduce costs and improve quality by providing more resistance to wear and to damage by jagged metal extrusion ends.
Plastics processing. In injection molding and extrusion equipment, Vespel® parts are replacing metal and other materials seals, bushings, bearings and insulators. Often used without lubrication, Vespel® parts help deliver these benefits:
- Reduce contamination of the plastic melt and improve product quality
- Boost productivity.
- Withstand process temperatures up to 550° F/288° C
- Resist creep, maintaining critical dimensions.
In hot runner or insulated runner systems, for example, Vespel® insulators can outlast ceramics thanks to their impact resistance and mechanical strength. More compliant than metal or ceramics, they also provide better seals.
Glass making. In the torrid world glass container manufacturing, Vespel® parts have proven their value as takeout inserts, stacker bar inserts, sweep out fingers and dead plates. They are selected to meet demanding requirements such as intermittent contact with glass bottles at 1200˚ F/650˚ C, low friction and wear, mechanical strength and toughness, lower thermal conductivity than graphite and metal parts.
Solutions for Low Wear and Dimensional Stability
Semiconductor Material Handling. For reliable wafer and flat panel glass handling, Vespel® parts and shapes provide several benefits:
- Low wear=low particles=reduced contamination and positional accuracy
- Surface characteristics result in less damage to subtrates
- High temperature capability
Increased demand for advanced test socket designs is exceeding the capability of conventional materials. The trend toward smaller pin sizes and finer pitches requires stronger/stiffer materials with improved dimensional stability and stable electrical properties. Vespel® parts offer dimensional stability, excellent electrical insulation and stiffness to resist insertion force to improve test accuracy.
Holographic film/sheet processing. Vespel® rollers provide hardness and compliance in equipment for embossing holographic film and sheet. Vespel® parts help improve flexibility in hologram design and enhance the brilliance of holographic effects, reduce production costs with fewer rejects, reduce wear and increase longer roll life.
Textiles. In the fast-moving world of textile production, Vespel® parts for looms and finishing equipment are being chosen because they can operate without fabric-soiling lubricants, fulfill the needs for low wear and friction at high PV ratios, and decrease maintenance and operating costs.
Other field-proven applications in various kinds of textile machinery include sleeve bearings, roller bearings, brake shoes, guide rollers and shedder bushings.
Photocopying machines. Lubricant-free performance provides benefits in paper handling, too. For example, in a desktop copier, toner was leaching oil from porous bronze bushings, contaminating the toner and ruining copy quality. Switching to unlubricated Vespel® bearings solved the contamination problem while delivering excellent wear performance.
Manufacturers of conveyors and other material handling equipment can look to DuPont™ Vespel® parts for mechanical components that deliver performance benefits and reduce ownership and operating cost in a wide range of applications, including those involving elevated temperature, extreme wear conditions and/or harsh chemicals.
For Vespel® Custom Parts, DuPont engineers work with part designers to customize the production method and material for desired end-use results. DuPont engineers may recommend fabricating a finished part from Authentic Vespel® stock shapes for prototypes, small quantities or complex geometries.
Vespel® products are made from a variety of materials (polyimides, thermoplastics, composites and chemically-resistant polymers). These products offer a unique combination of physical properties and design flexibility. Parts are available as custom parts, stock shapes, components or assembles.
DUPONT PRODUCTS & SERVICES
Vespel® S products are highly durable polyimides used in demanding applications where exceptional thermal resistance (cryogenic to 349°C), low wear and/or low friction, strength and impact resistance are desired as custom parts or stock shapes.
Vespel® ASB assemblies include fiber/fabric reinforced composites with metal backing that offer low wear & friction plus self lubrication, and metal-backed carbon-graphites for self-lubricating wear at extreme temperatures.
Vespel® TP thermoplastic family offers many products with excellent strength and toughness, dimensional stability, low outgassing, creep resistance, and low coefficient of thermal expansion for aircraft, automotive and industrial applications.
Vespel® CP parts offer an array of fiber or fabric reinforced composites for a range of unique design needs when wear and strength are key. Typically CP parts are used in aircraft bushings, washers, bumpers and seals.
Vespel® CR products provide excellent chemical resistance in refineries and chemical processing. They offer high-creep resistance and easy machinability for wear rings and tight-tolerance parts like ball-valve seats.
INFORMATION & IDEAS
DuPont™ Vespel® parts and shapes and DuPont™ Delrin® acetal resin are high-strength, low-friction mechanical plastics that deliver performance for automotive, consumer, and industrial applications.
Low friction plastic applications developed in collaboration with DuPont experts can help improve durability and performance, reduce maintenance, and can even contribute to reduced use of fossil fuels.
Delrin® properties of the Delrin® 100 series make it the premier resin of choice in the most demanding applications where the ultimate in toughness combined with high strength, creep and fatigue resistance are required.
From material selection to tolerances, the Plastic Design Guide details 10 top tips for effective design, efficient production, and successful products.