Transport chain for form-fill packaging apparatus

A transport indexing chain for a food-packaging machine is made of two different materials in order to provide the most optimal result of a drive chain that resists wear and tear and thus reduces elongation of the chain over time, and which also provides a drive indexing chain that resists bacterial infection. In order to satisfy the first objective of providing a chain that resists wear and elongation of the drive chain, the parts thereof that remain exposed to greasing or lubrication, and thus are resistant to rusting, are made of the same prior-art material of nickel-plated carbon steel. These parts are: The bushings, the rollers, and the pivot rods or pins. The remaining parts, namely the links or side plates and the clamping attachments, are made of stainless steel, whereby prevention of bacterial infection is substantially achieved without increased wear.
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