Shredding Rolls

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Shredding is an alternative to flaking, designed to form cooked cereal into layered shredded products or stranded type products. Examples are shreddies and shredded wheat. Products are usually based on corn, wheat, bran or rice, fruit filled products are possible.

Cooked cereal is fed to a number of shredding roll mill units via an overhead recirculating and distribution screw. The screw flood feeds individual shredding roll hoppers. The roll assembly has one grooved and one plain roll. Product is fed through the roll nip to form a web of materials or strands. Product is separated from the roll by a comb scraper onto a conveyor underneath.

A number of pairs of rolls are used in series to lay webs on top of one another forming a multi-layered sheet. Up to 20 layers can be combined, options of fillings between layers is possible. For stranded products the strands are cut to length before drying. For shredded products the finished sheet is crimped and cut to length. The crimper and slitter act against a hardened roll. Product is then toasted.

The rolls have through hardened alloy steel sleeves. The grooved rolls can be re-ground. Rolls are water cooled. Standard roll size is 200mm diameter x 240mm wide. Other sizes are available. A range of groove patterns is available including square and rectangular. Rolls are frame mounted, one roll fixed, the other in sliding bearings to allow a pressurised clamp to nip the rolls. A number of units can be mounted in a common frame. Controls are frame mounted.

Typical output around 150 kg per hour per pair of rolls. Hydraulic or electric drives can be supplied. Hydraulic power packs are available complete with all controls.

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Shredding Rolls

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