Rubber Rollers
We offer an extensive range of compounds to suit your needs from the classic to the speciality elastomers. From natural, neoprene and epdm to speciality compounds such as Silicone, Hypalon and NBR/PVC. Hardness range from 15 to 90 shore A.

Using the latest technology all compounds are blended in house to ensure conformity and consistency from one roll to the next.

Why do the large Paper and Pulp companies use Littlejohn? This is a most demanding industry requiring quick lead times and consistent quality.

We have to ensure 'we get it right the first time every time'. Our corrugated roller coverings are produced using the latest equipment to obtain a consistent diameter and parallelism to improve uniform ink distribution. We also grind accurate parabolic crowns with computer controlled crowning equipment.

We have an extensive range of rubber compunds to suit all flexographic printing for water based, solvent and UV inks. These rolls require high accuracy on the diameter, excellent TIR concentricity and a quality polished surface.

Following extensive development and many trials Laserlife LittleJohn has formulated a new compound for offset and lithographic printing. This new product will last longer with improved wear resistance, less distortion and friendly to harsh solvents compared to the traditional rubber compounds.

We call it OFFSET 40 and it will increase your print run & reduces downtime, making for greater savings.

We have many options for various types of coating rollers from different rubber compounds to hard face coatings. These rollers will offer a hard wearing and consistent coating, together with a high quality surface finish with excellent release properties.

Plastic Rollers
We coat various types of plastic synthetic coatings for the printing industries. Our two main synthetic coatings are Corvel and Rilsan. Synthetic materials which provide resistance to chemicals while offering excellent abrasion, wear and impact resistance with a low coefficient of friction

• Hard and durable coating with smooth and gloss surface.
• Excellent abrasion and wear resistance.
• Good electrical properties, Corrosion resistance; resistant to most strong alkalis, weak acids, commercial solvents, inks, oils, greases and gasoline.
• Excellent machineability which makes it easy to be knurled which is suitable for the micrometric rollers in the printing industry.

Rilsan coating has similar properties of Corvel except its limitation to coating thickness is 2- 3mm.

Ceramic Rollers
Using the latest plasma system we are able to produce dense, hard wearing coatings that will withstand harsh environments. The diamond lapped super finished process yields a high quality ceramic surface which delivers excellent hydrophilic properties ideal for dampening rollers in Lithographic printing.

Ceramic rollers are also used for metering rollers, feed rollers and transfer rollers.

Metal Rollers
A variety of metals sprayed includes Nickel Chrome, Aluminium, Tungsten carbide with nickel matrix, Copper, Bronze, Brass, Molybdenum, Stainless Steels, Stellite and Zinc. The coatings are used widely for wear resistance, corrosion resistance and structure restoration

• Superb electrical and thermal conductivity.
• Affinity to water or inks
• Thick coating can be sprayed
• Readily machineable and will produce an excellent finish.

• Resist corrosive gases and oxidation temperatures up to 1000 °C, it can be used to resist heat and prevent oxidation scaling of conventional low alloy steels.
• Used as an oxygen barrier under sprayed coatings of ceramics. and is also used as a bond coating for ceramics. The corrosion is significantly inhibited with this material.
• Machineable.

• Used to protect iron and steel against corrosion.
• Suitable for alkaline environment.
• Comparatively cheap coating.

Recently we have developed a new coating process and material that has been very well received. It is our non stick coating. This thermal sprayed coating not only has the non stick properties but also is very wear resistant and excellent against corrosion. The non stick surface offers:

• Excellent release which minimises the build-up of residue from manufactured product onto coated production equipment. It releases what-ever it comes in contact with. (Examples: ink, glue, food, paint, varnish, adhesives, etc.) An excellent release property (i.e. mould release).
• The release coatings have lower friction which decrease the drag of product over stationary or guiding parts. They also provide durability and conductivity of static.
• These coatings are designed for ease of cleaning which minimise accumulation of residue and product pick-off. Cleaning is quick, easy, and operator friendly.

Ceramic

Any of various hard, heat-resistant, corrosion resistant coatings made up of non-metallic materials.

• Very hard coating, the hardness is 70-75Rc.
• Excellent resistance to corrosion, sliding wear and particle erosion.
• Very dense coating, porosity is less than 2%. Insoluble in acids, alkalis and alcohol.
• Dissociates easily, hence ideal for laser engraving and widely used for the wear protective coating of printing rolls which are subsequently laser engraved

• Good abrasion and erosion resistance.
• Easier to grind than Chrome Oxide coatings.
• Better hydrophilic property than chrome oxide coatings.
• Less brittle, more ductile than Chrome Oxide coatings.

Carbide
Usually very hard metallic, with superior wear resistance. Ideal for long wearing surfaces and edges.

• Resistant to abrasion, erosion and certain level of hammer wear loading.
• Good sliding wear resistance at low temperature.
• Coatings are hard and dense with high bond strength.
• Good fretting resistance.
• Excellent coatings to replace electroplating hard chrome coatings.

Thermoplastics
Synthetic materials which provide resistance to chemicals while offering excellent abrasion, wear and impact resistance with a low coefficient of friction. Hard and durable coating with smooth and gloss surface.

• Excellent abrasion and wear resistance.
• Good electrical properties, good chemical and solvent resistance
• Corrosion resistance; resistant to most strong alkalis, weak acids, commercial solvents, inks, oils, greases and gasoline.
• Excellent machineability makes it easy to be knurled which is suitable for Micrometric rollers in the printing industry.

Rilsan coating has similar properties of Corvel except its limitation on coating thickness is 2-3 mm.

Metals

• Superb electrical and thermal conductivity.
• Affinity to water or inks
• Thick coating can be sprayed
• Readily machineable and will produce an excellent finish

• Resist corrosive gases and oxidation temperatures up to 1000 °C, it can be used to resist heat and prevent oxidation scaling of conventional low alloy steels.
• Used as an oxygen barrier under sprayed coatings of ceramics.
• It is used as a bond coating for ceramics. The corrosion is significantly inhibited with this material.
• Machineable.

• Used to protect iron and steel against corrosion.
• Suitable for alkaline environment.
• Comparatively cheap coating