What we don’t know about Polyurethane is not worth knowing. Over the years we have helped create thousands of varied PU products. At our manufacturing plant in Lydney, UK, we make many products and components for a vast variety of polyurethane systems as well as the ability to research and create new solutions and products.
At Watts we can manufacture to your specifications. We are able to produce parts that not only work with new designs, they can also be used to replace existing parts. Our Watts Polyurethane Scraper Blades can be used in a variety of processes:
- Scraper blades for agricultural use such as slurry scrapers or for use on tractors.
- Snow plough blades. These can be used as replacement for existing blades, or from new. They are traditionally used to protect the metal base, whilst also protecting the surface from damages and scratching.
- Used on BOMAG compaction machinery.
- They can also be used in the water treatment process.
- On conveyor belts in mining, quarrying and recycling to remove material which has adhered to the belt.
Compared to rubber
Using polyurethane blades can extend the life-cycle of the product in comparison to rubber alternatives. The make-up of a polyurethane product ensures more durability and provides a greater resistance to chemical damage in environments where this is important.
Compared to plastic
PU blades can work at lower ranges of temperature without becoming brittle. They are more impact resistant and can use thicker section moulding to make an improved, robust product.
Compared to metal
The significant advantage over metal is our ability to mould the PU to desired shape required as well as the ability to flexibly absorb impacts and significantly lower the noise produced whilst in service.
Our standard ranges are available in any size up to 2.8m x 500mm and up to 50mm thick. They are available in hardness of 45 Shore A to 60 Shore D and a range of polyurethane systems optimised for specific environments.
Watts Urethane Products offer three different manufacturing processes for polyurethane sheets depending on your particular requirements. These are:
Centrifuge cast sheet
Available in a shore hardness range of 45 Shore ‘A’ to 95 Shore ‘A’. The range of sheet thickness available is 1.0mm to 13.0mm, with standard dimensions being 3715mm x 686mm. These are available in a range of colours. Sheets can be cut to size to suit, however additional charges may be incurred.
Press Break Film
Traditionally used in the bending of metals, is available in a shore hardness range of 45 Shore ‘A’ to 95 Shore ‘A’. The sheet thickness range is 0.5mm to 1.5mm, and the standard sheet dimensions are 3600mm x 150mm (nominally). A range of colour options are available.
Hot table cast sheet
Available in a range of 45 Shore ‘A’ to 60 Shore ‘D’. The dimensions available are up to 2700mm x 1200mm x 12mm thick. A range of colours are available, and there is also the option of Vulkollan® material made under licence from Bayer AG.
Polyurethane sheets can also be used for the manufacture of small run lines, where the items can be cut (or punched) from the sheet.
Watts Industrial PU RodUrethane Rods are widely used to make strippers in the tool and die and metal stamping industries where they work with the specialist piercing punches and die tools.
Rods can also be cut for washers, seals and insulators, wheels and rollers of all sizes in hardness from 45 shore A to 60 shore D. We can also manufacture out of Vulkollan, which is made under licence from Bayer.
For our standard range of products please refer to our downloads. Other sizes can be made to your specific drawings.
Polyurethane Tubes and Springs
A key use of polyurethane tubes is for tubular springs in environments where corrosion, vibrations and magnetism prevent the use of conventional steel. Our tubes cope with either static or cyclical loading, particularly high loads in continuous processes such as press tooling which is one of polyurethane’s advantages over either rubber or plastic.
Uses include punching, stamping and drawing dies where the resilience of the urethane has distinct advantages over alternative materials as a spring with PU’s elastic memory. Other tube uses include roller covers, spacers, gaskets, pinch strippers and as machined prototypes. Our tubular springs are either individually cast or isostatically moulded depending upon final functionality.
Our Watts Polyurethane shock absorbers are used in a number of different industries that involve high impact operations such as the Martin woodworking machines – which we produce as standard. Using polyurethane is beneficial as the PU properties can be tailored to provide a high degree of shock absorption specific to the operation, also they provide durability, increasing the lifetime of the machinery it’s used on reducing the likelihood of impact damage.
Our Watts Polyurethane shock absorbers are used in the transport industry for aerospace and cars. Again the ability to cope with impact, vibrations and longevity are key.
Shock absorber pads are available in a hardness range of 80 Shore ‘A’ to 95 Shore ‘A’. They can be manufactured in a range of colours and are designed to requirement with initial tooling costs being more cost-effective than rubber, especially with standard lines. Polyurethane shock absorber pads are more ozone resistance than rubber and so avoid cracking as well as being able to withstand higher loads.
Where machinery requires the flow of liquid to be controlled we offer a range of polyurethane ball valves and associated seats as well as gland seals built to our customers’ requirements.
We also have a standard range of ball valves, seats and seals to fit valve housings, such as: Willets, Pegson, Dorrco and Whitehead & Poole among other common sizes. Polyurethane ball valves and associated components offer advantages over rubber and plastic providing overall resilience, lower temperature resistance, cheaper prototyping and lower tooling costs.
To view the items that are currently offered as standard download our brochure.
Our polyurethane Star Wheels, also called harvesting wheels, separator wheels, or de-stoning wheels, depending on whether they are used in agriculture, forestry, recycling or mining & aggregate sorting, are used in the screening process. They can be used to sort pieces by size or to remove waste such as when grading soil. In the harvesting process, they are used to separate the produce (e.g. potatoes or other root vegetables) from dirt and stones, whilst limiting any damage to the produce.
Design of the star wheel is optimised for each process in order to achieve the desired results economically and in the correct hardness of material to balance wear of the wheel with the potential for damage to the produce. Typically star wheels are therefore made to unique designs rather than being a standard product and our Watts Technical Team will help you to develop the correct Star Wheel for your business needs.
Sometimes called non-crush or zero crush wheels, these are traditionally used in the paper and board manufacturing process, but they could be used in many other processes where products are needed to be moved through machines, without damaging the product substrate.
The wheels themselves are designed to partially deform in case of irregularities and therefore allow for the necessary tolerance range of approximately 20mm and variations in the size of the original product.
We can manufacture your soft touch wheels in a hardness range of 45 Shore ‘A’ to 95 Shore ‘A’, in a range of colours available to meet your requirements.
Watts polyurethane feed wheels and rollers are used in the transmission of materials through a process machine, without causing any damage to the product, and our polyurethane offers better longevity and lower maintenance levels than the alternatives.
Heavily used in the paper & board and packaging industries, feed wheels and rollers are used in the production stages where high volumes need to be carefully handled to prevent rejects.
At Watts Urethane Products, we produce feed wheels and rollers to customer specific designs. As well as manufacture to industry standards, including standard parts of print machines such as Isowa (corrugated card), Simon (corrugated boxes), EMBA and die cutter and folding machines such as Gandossi and Fossati.
Feed wheels and rollers are available in a hardness range of 60 Shore ‘A’ to 95 Shore ‘A’, and are available in a range of colours. The costs and range of colours available may vary according to the hardness required and the polyurethane system used. Feed wheels and rollers are also available in Vulkollan®, which is made under licence from Bayer AG.
Watts polyurethane anvils and creasers are used predominantly in the paper and board industry. We have significant experience producing polyurethane components within this area. We are able to offer standard and bespoke components that are compatible with all major suppliers of machinery into the industry:
- Creasers and
- Creaser covers
Many of our anvil and creaser products are compatible with the following brands; Emba, Isowa, Martin, Simon and Sun machines which are used extensively within this industry.
With greater ozone resistance than equivalent rubber products, not only do PU anvils and creasers suffer less from splitting and brittleness, but they are also have greater impact and abrasion resistance.
Anvils and creasers are typically manufactured in a hardness range of 45 Shore ‘A’ to 60 Shore ‘D’, and in a range of colours. There is also the option to manufacture the products out of a Vulkollan®, which is made under licence from Bayer AG. If you require a hardness outside of the standard range our Watts Technical Team can work with you to create what you need.
As our creasers and anvils are made out of polyurethane not only do they have more tailorable characteristics than rubber but also the cost of tooling is less to make the ideal product for your requirements. Additionally where we re-cover components we are able to cut to your requirements.
Our Watts Polyurethane suckers and washers are used in a number of different industries. Suckers are traditionally used in the loading of materials to machinery at the start of the production process. The plastics, glass, and paper & board industries use suckers to transfer raw sheets into the loading area of a machine ready for processing. Our suckers can be manufactured between a hardness range of 45 shore ‘A’ and 95 Shore ‘A’, and are available in a wide range of colours.
Our Watts Polyurethane Washers are used in various industries and can have numerous applications. By using polyurethane washers you can select from a range of flexibility in the hardness of the washer, whilst providing an increase in durability over other materials such as rubber.
Our washers are available in a hardness range of 80 Shore ’A’ to 95 Shore ‘A’, and are available in a wide range of colours.
Watts Acuform sections are triangular bars of polyurethane used in metalworking operations. Their primary purpose is to assist in the bending of sheet metal. An acuform helps to form a sharp bend whilst simultaneously eliminating any damage to the product.
Our Acuform profiles are available in a hardness range of 80 Shore ‘A’ to 60 Shore ‘D’, and are available in a range of colours, including: red, black, ochre, natural, green, blue, yellow and orange. Other colours are available by arrangement. They are also available in Vulkollan®, which is made under licence from Bayer AG and comes in a standard colour.
Our standard three sizes are 25.4mm wide and 50.8mm wide in 1219mm lengths; and 80mm wide supplied in 835mm lengths. Should you require other sizes, given the cheaper tooling costs of polyurethane over rubber, acuform’s can be made subject to the quantity of your order.
Polyurethane acuform’s are more superior than rubber versions due to polyurethanes higher wear performance, it is more tear and abrasion resistant and has a more elastic memory to ensure the repeatability of the operation.
We offer a range of polyurethane blocks including:
- square bar: available in sizes up to 500mm x 500mm x 100mm high
- slab: available in sizes up to 1500mm x 1200mm x 60mm thick, with a maximum weight of 60kg.
- block: available in sizes up to 1000mm x 1000mm x 100mm high, with a maximum weight of 60kg
All polyurethane block variants are available in a wide range of hardness from 45 Shore ‘A’ to 60 Shore ‘D’ in a range of a number of standard colours. A selection of these options is also available in Vulkollan®, which is made under licence from Bayer AG.
Watts Polyurethane cutting sticks are used in a number of different industries, such as: metal sheet, plastics, paper, cardboard, polythene and print trimming, with a variety of uses. One of the more common being blade protection, when cutting materials. The cutting stick will be located after the material to be cut, and will protect the blade from damage caused by hitting the machine surface.
Polyurethane is an excellent material for this use given:
- its ability to withstand higher loads, high resistance to cuts and tears in comparison to rubber
- its higher impact resistance, elastic memory and stronger resilience in comparison to plastic
At Watts we offer polyurethane cutting sticks in a hardness range of 80 Shore ‘A’ to 60 Shore ‘D’ so that the stick has the correct amount of give to ensure a clean cut whilst minimising blade damage. Available in a range of 8 standard colours and dimensions, we offer a variety of styles, including plain, chamfered, grooved, slotted, and holed to ensure that the cutting stick meets your specific needs.
Watts Polyurethane strippers are used predominantly in metalworking operations, for instance in developing perforated steel sheet, PU strippers are used to strip the sheet away from the punch.
Our PU strippers are used to help eliminate damage to the steel sheet, they help reduce the spread of impact forces following the process. Polyurethane is an ideal material for this application in comparison to rubber or plastic. It can deal with higher loads, or being tailored at lower tooling costs to specific applications.
Our PU Strippers are available in a hardness range of 80 Shore ‘A’ to 95 Shore ‘A’, and are available in a range of colours and designs. They are also available in Vulkollan®, made under licence from Bayer AG.
Originally used in the ceramics industry, isostatic moulding bags (iso-bags) are also used in precious metal manufacturing processes. Iso-Bags are used to create shapes and minimise the need for post-operative machining. Ensuring only an essential amount of material is used. Our Watts isostatic moulding bags are filled with the raw material (in a powder like form) and the bag is then placed in to a pressure vessel, where the powder is compressed until it forms a solid part.
Our Watts manufacturered iso-bags can be made for industry standard parts or they can be made to measure your specific requirements. Our iso-bags are available in a hardness range of 45 Shore ‘A’ to 95 Shore ‘A’, colouring is available. Typically iso-bags are manufactured in a translucent colour and to a 65 Shore ‘A’ hardness. Our Watts range of iso-bags include:
- Open-ended and closed round tube iso-bags
- Open-ended and closed square or rectangular iso-bags
- Bottle iso-bags
- Sphere iso-bags
Used with isostatic moulding bags, are isostatic moulding plugs (iso-plugs) are used to plug the bag, prevent any of the materials escaping, and ensure that the forming process is completed efficiently. We provide:
- Plain round iso-plugs
- Square/rectangular iso-plugs
- Bottle iso-plugs
- Sphere iso-plugs
At Watts we manufacture isostatic moulding bags to specifically fit the SIMAC isostatic presses. SIMAC Isostatic moulding bags are available in a shore hardness range of 45 Shore ‘A’ to 95 Shore ‘A’ and designed to fit standard external dimensions. We can also manufacture to your design, and to meet your specified internal material dimensions.
More cost effective to make, harder to break
Compared to traditional metal bollards, Watts Terrathane® polyurethane bollards have higher abrasion, impact resistance and last longer with less maintenance. Terrathane® is more flexible and can be designed to almost no resistance if required or fitted with a steel core where anti-ram is needed. Terrathane® creates less noise when struck, has higher corrosion resistance and is significantly more cost-effective to make. Unlike metal, polyurethane can be produced in a myriad of colours from core through to the surface rather than being a coated layer that could be scratched, ensuring durability with less maintenance.
We have a dedicated website: The Bollard Shop for even more detailed information on our ranges as well as videos of our impact-flex products.