This Course has been cancelled and will be rescheduled in 2015. Please contact Mary Beth Cornell, mcornell@tappi.org 404-510-0696 mobile with questions.
How Will You Benefit?
- Corrugators will learn about the pulp and papermaking processes that affect the liner & medium they run
- Liner and Medium Manufacturers: Learn about important factors that improve the performance of their sheets on the corrugator.
- Gain increased confidence in understanding linerboard & medium performance properties and how they are achieved
- Network with corrugators, suppliers, and liner / medium manufacturers
- increase your ability to improve manufacturing operations, and produce a more competitive product.
Topics covered include:
- Corrugating process
- Its equipment
- Terminology
- Key variables
- Process and paper variables affecting board strength and runnability
- Properties and Testing
- Developments in liner printing (flexo, digital, others) & demands on liner
- Board quality and runnability
- Board structure to optimize strength
- Ring Crush, STIFI , ECT, stiffness, and other strength tests
- Moisture & liquid absorption effects
- Curl, warp, wrinkles
- Smoothness & printability
- Process Improvements
- Performance effects of fiber raw materials and pulp mill operations
- Stock prep refining
- Strength and other additives
- Fourdrinier and multiply wet end operations & effects on sheet structure & properties
- Twin wire gap forming
- Pressing & drying & effects on properties
- Size press chemical addition
- Calendering
Participants will learn about:
- Increasing understanding of corrugating process operations, equipment, terms and variables, starch fundamentals and application.The focus is on how to achieve a good bond in the corrugator, and how liner & medium can hurt or help that process.
- Increasing understanding of linerboard & medium properties & tests, and how these relate to the final box performance, and also how the liner and medium affect runnability on the corrugator.
- Increasing understanding of the effects of pulp & papermaking manufacturing processes on linerboard/medium.
- Fiber types, Kraft & NSSC Pulps, and Recycled Fibers
- Effects of Chemical Additives including, Basics of Wet End Chemistry, Dry & Wet Strength Adhesives, Retention, and Deposit Control
- Optimization of Stock Prep Refining
- Paper Machine Operations
- Headbox Performance
- Sheet Forming & Wet End Operations
- Pressing, Drying, Calendering Operations
- Forming, Wet Press, and Drying Fabric Considerations
- Surface Treatments
- Developments in Printing and Demands on Linerboard
This course is ideal for process engineers and operators in linerboard and medium manufacturing facilities and converting plants with a more intermediate background. Chemical and other suppliers will also benefit from this course.
Learning Outcomes
- Increase ability to describe the corrugating process, including layout of equipment, operating variables, and effects of the liner & medium in the process.
- Describe additional linerboard & medium performance properties and tests, and some of the things that affect the tests.
- Increase knowledge of the manufacturing factors that can improve the papermaking processes, and liner & medium quality.
- Increase awareness of some of the new developments in Corrugating and in Printing that may require increased Linerboard/Medium performance.
For those participants who require an overview background on corrugated and pulp and papermaking technology, there will be an optional half-day Workshop on Monday, August 4, prior to the beginning of the main course on Tuesday. This supplemental session is intended for corrugators, new P&P mill and supplier personnel, and those without exposure to pulp and paper operations.
