Clipper Rolls for Veneer Machines

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ACR Group Inc. (Formerly Merdeka), fabricates solid  MetaFlex® urethane rolls, wheels, and segmented cylinder roll coverings.

ACR is the OEM manufacturer for all Raute Clipper Roll machines in North America.

Preparation for cementing includes stripping of any remaining old coverings and cleaning the metal by sandblasting. After coating the roll with a special adhesive, it is placed into a mold and MetaFlex® urethane is poured around it. Then it is exposed to hot air curing to develop maximum strength. Finally it is turned on a lathe to produce specified surface characteristics.

ACR Group Inc. has many decades of experience in urethane development and maintains full facilities and staff for research and production. From the laboratory through production; physical, mechanical, and chemical properties are constantly evaluated; urethane compounds are also tested for environmental, product life, and quality control considerations.

Manufactured only by ACR,  MetaFlex® urethane is a specially formulated elastomer with outstanding abrasion resistance, tensile strength, oil resistance and overall toughness.

MetaFlex® urethane is used in rolls, sheets, and custom-molded shapes. It is not just another substitute for ordinary rubber, structural plastics or metals. It is a completely unique engineering and structural material for making products with properties unavailable with ordinary compounds.

MetaFlex® urethane has thousands of industrial applications that achieve significant savings in production and maintenance.

Prevent cutting, tearing, and marring of roller surfaces with MetaFlex® urethane roller coverings. MetaFlex® rolls and roll coverings combine resilience and abrasion resistance, with unsurpassed tensile strength.

The result? Roll coverings that outlast other materials by a factor of 10 and more...superb performance in different atmospheres due to MetaFlex®'s outstanding resistance to oxidation, oil, and most solvents...hard, tough-yet resilient-MetaFlex® rollers withstand abuse...they give hundreds more hours of service life, cutting down time to a minimum.

Our superior urethane-to-metal bond and resistance to chemicals prevent roll breakdown. Excellent resilience and ability to resist cutting of sharp steel dies make possible a high-speed cutting roll that will accommodate cardboard carton blanks at an amazing rate. Cutting pads on machines are more effective and add hours of life to steel cutting dies.

Unusual resistance to deformity under pressure is another characteristic that contributes to roller performance. When bonded to a metal roll no lateral movement of the urethane is possible. Therefore high load-bearing characteristics are achieved. For roll applications subject to high mechanical stress best results are obtained by casting MetaFlex® directly to metal rolls.

MetaFlex® urethane can be compounded with high or low friction coefficients which are retained throughout service life. Frictional properties, as with conventional rubbers, depend on the hardness of the elastomer. The softer the compound higher the coefficient of friction. The harder compounds exhibit a very low coefficient of friction. The use of additives during production can lower it considerably. Such additives give polyurethane self-lubricating properties to further improve the already high abrasion resistance.