Polyurethane and Rubber product projects
Polyurethane Bush
Polyurethane (Pu) is a very versatile material which can be moulded into many shapes. A poured open cast liquid requires relatively simple tooling and with the many different grades of Pu products can be tailored to specific requirements.
A customer required the manufacture of a blasting table covered with abrasion resistant polyurethane. The picture shows the 1.3 metre diameter steel plate lined with 25mm thick poly.
The holes are for letting the shot fall through and were moulded rather than drilled. This table was manufactured for a Pangbourne automatic shot blasting machine.
Wear resistant pads
Lima Envec manufacture polyurethane pads discs, and bumpers for a wide range of industries.
From rubber or polyurethane compounds taylored to customer requirements.
This post described the lining of steel plates with a polyurea grade polyurethane coating. The project involved coating 8 off curved plates with a 2 mm thick coating. The plates form segments of a large tank used to hold corrosive materials.
Polyurethane spray provides the neccessary properties to withstand chemical attack.
Bowl relining service
ST 22 proir to relining
A regular customer runs a number of Rosler ST 22 polishing machines and periodically the machines wear out the tough polyurethane linings.
The process of relining the bowl is described as follows:
The machine bowl only comes to us for reline .
The hole is apparent in this photograph.
The old worn polyurethane lining is removed manualy. We do not burn out the old lining as this can distort the steel shell.
Before Polyurethane spray (grit blasted)
Polyurethane spray coating is a service offered by Lima Envec. High build coatings are achieved when polyurethane is sprayed onto steel. This process is ideally suited to the coating of large complicated shapes where the cost of a mould tool would be prohibitive.
The hopper is ready for a 6mm thick polyurethane coating.
Hopper coated in black spray polyurethane.
This picture shows the hopper coated with 6mm thick polyurethane spray coating
This post describes the internal lining of a vessel. A customer required a 6mm thick polyurethane lining in order to protect the substrate from wear, and to ensure that the product would not be contaminated with metal from the vessel. A polyurethane spray applied coating was used to line the vessel and provide a membrane.
Red polyurethane lining in a grinding mill
Spiral roller coated with polyurethane
This project describes the coating of a spiral roller with 85 shore polyurethane. A customer required a tough coating applying to a fabricated roller. The initial tooling costs involved impeded the progress of the project. Lima Envec offered to spray apply polyurethane rater than produce a mould tool.
This course allowed the project to move forward and the roller is undergoing trials.
Spiral roller
Lima Envec are approved applicators for Irathene products. These spray applied polyurethane lining are proven in industry for the smooth finish. hard wearing and tough Irathene coatings are especially suited to small components where fine coatings are required.
Irathane coating
Lima Envec produce polyurethane sheet from our centrifuge. This process involves spinning a drum and introducing a known quantity of polymer compound. The centrifugal action ensures that the polyurethane elastomer is evenly distributed around the drum and produces accurate thickness sheeting.
Polyurethane sheet
