100% post consumer recycled


ENESSCO BOOSTS PRODUCTION BY 8%

SHEET STRENGTH/DIRT COUNTS IMPROVED DRAMATICALLY

Operation:

Wisconsin, 100% Post- Consumer Recycled Furnish

Customer:

Machines - Cylinder (1) & Fourdrinier (1)
Grades - Producing Medium, Core Stock & Light Weight Specialty Grades
Furnish - OCC, Mixed Office Furnish, News

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Problem:
Mill wanted to increase production.  Limiting factors included press felt filling (inorganic/organic) which resulted in poor dewatering and sheet consolidation at higher machine speeds. Higher speeds also increased frequency of Breaks.  Stock Preparation limitations were also critical to pulp quality.  Increasing the demand for pulp would
correlate to poor Screening and Cleaning equipment efficiencies. The resulting stock would be high in dirt, stickies and wax causing excessive machine deposition, unacceptable sheet quality and poor machine efficiency.

 

Solution:
ENESSCO Technology was initiated as a Fiber/Contaminants "Modification" Treatment. The approach actually treats the surface interface between the contaminant and the paper sheet. The ENESSCO promotes the contaminants to "independently" release from the wood fiber. The contaminants are stabilized and are more efficiently removed by Screening & Cleaning equipment.  ENESSCO significantly reduces the development of contaminant/     fiber matrix "bundles" that often cycle-up in stock prep system. This allows for a significant improvement in the efficiency of each stock preparation unit operation.  Contact adhesives/plastic/wax and other contaminants are efficiently purged from the process immediately (nocycle-up). This maximizes the capacity of the stock preparation
system, while producing high quality pulp.  ENESSCO Improves Production 100% concentrated dry ENESSCO product was fed to the neutral pH pulper at 1.0 lb./ton.  ENESSCO was administered via repulpable bags.

 

 

Results:
ENESSCO treatment resulted in a production increase of 10% on the Fourdrinier Machine and 6% on the Cylinder Machine. The mill highlighted the primary reason the increase in production was possible was the high quality furnish; due to a more efficiently operating stock preparation system.  Dirt Counts were reduced from over 150 to less than 10 (TAPPI). Sheet strength increases on both machines were attributed to a significant
reduction of wax that subsequently improved fiber bonding.  The Fourdrinier machine experienced reduced deposition and fewer breaks, while the Cylinder machine saw reduced wet spots and blowing due to cleaner felts.  Rejects leaving stock prep were significantly lower in fiber losses.  Measurements of system rejects highlighted yield improvement of 3-4%.