Tissue mill gains over $1 million/yr in saving through process chemical saving and productivity gains
A tissue machine producing 100% recycled toweling with a fairly closed whitewater system desired to reduce operating costs by increasing CMC (carboxymethyl cellulose) use and minimize use of a proprietary wet strength resin.
The cost of the CMC was roughly one tenth the cost of the proprietary resin; however, the CMC would cause severe press fabric plugging.
This challenge was so severe that at higher CMC addition rates the fabric could only run for a few hours before a down-time batch wash was required – resulting in production uptime loss.
Secondarily, the machine needed a solution for stickies that were depositing on the TAD fabric.
The machine was using a competitor’s traditional cationic passivation product to treat the press fabric, but it had minimal effectiveness at controlling the CMC deposition.
The DuBois Solution
DuBois implemented new strategies for both press felt and TAD fabric cleaning programs.
For the press fabric, DuBois implemented their patented DuPulse method of felt cleaning.
DuPulse is a unique felt cleaning application method, which utilizes the high pressure, oscillating needle showers on an intermittent or “pulsed” basis.
The cleaning chemistries used were a combination of DuBois’ patented Altrox L peroxygen-based, detergent cleaner and Div-O-Kleen EF alkaline and natural solvent cleaner. This combination has been used effectively to remove recycle contaminants and wet-strength resin, CMC, sizing and various other papermaking materials.
For the TAD fabric cleaning program, an effective batch washing application was developed, using the combination of Altrox L and Div-O-Kleen EF.
Results and Benefits
• Batch washes were completed while the sheet was still on the Yankee with no detrimental effect to the Yankee coating performance.
Trade Expo / 04.12.18
Visit DuBois technical specialists December 4-5 in Winnipeg, MB at Booth #48. We will highlight our paint pretreatment, metalworking and waste water treatment solutions that will help you provide a farmer a high quality piece of equipment while maintaining environmental compliance.
Training / 12.02.19
This conference will bring stampers and die shops up to date on new lubricants for stamping and tool and die machining, and help them evaluate new formulations and select the right lubricant for the job. Rick Bulter, DuBois R&D Manager, will be part of the training team at this event sponsored by the MetalForming magazine with support by the Society of Tribologists and Lubrication Engineers.
Recent Events / 18.06.18
The acquisition of U.S. Industrial Lubricants adds high temperature and food grade lubricants to DuBois product offering. Our high temperature synthetic oven chain lubricants are widely used in the fiberglass insulation, textile finishing, food processing, plywood, corrugated paper, automotive and many other manufacturing industries.
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