Davis-Standard improvess “ELF” rubber feed units

Pawcatuck, Connecticut -- Davis-Standard says it has improved the design of its Elastomer Leakage Free” (ELF) feed section extruder feed unit to simplify maintenance and enhance scraper blade calibration. The feed roll cartridge is now on a removable assembly making system maintenance more accessible and convenient, said the company.

For more accurate calibration of the blade-to-roll dimensions, the scraper blade can be adjusted on the assembly when it is out of the machine and visible. Both changes are based on field tests conducted by Davis-Standard and customer feedback.

The patent-pending ELF feed section, in production for more than a year, eliminates scrap problems and feed roll bearing failure associated with rubber bleed during the extrusion process. The ELF feeds rubber shavings scraped from the feed roll directly back into the process. This technology eradicates waste and keeps the manufacturing area clean. It also keeps feed roll bearings protected from rubber contamination, a common problem caused by leakage, said the company.