November 6-7, 2014 at Miron Construction, Neenah, Wisconsin
Course Schedule
Course Description: Basis raw materials and physical property relationships are discussed to develop an appreciation of the trade-offs made in designing a tissue product for a specific application. Each major unit operation of the tissue making process is reviewed to describe key engineering relationships and their effect on final tissue product properties.
Thursday November 6, 2014
8:00am – 8:30am Section1 Welcome, Introductions,
Expectations, Course Objective
Introduction to Tissue Business and Products
a) North American Tissue Markets vs. World
b) Typical products and properties required by customers
c) Hands-on Tissue evaluation including class as organized tissue softness panel
9:15am - 9:30am Break
9:30am - 10:45am Section 3 Bruce Janda
Web-Fiber Networks and Physical Properties
a) Formation and Anisotropy of machine made paper
b) Strength/Wet Strength
c) Bulk/ Absorbency
d) Softness
e) Typical physical relationships and trade offs
10:45am - 11:30am Section 4 Bruce Janda
Fibers and Furnishes Effects on Tissue Properties
a) Fiber Sources and Properties (hardwood, softwood)
b) Pulping Processes effects on tissue properties
c) Recycled Fiber and Challenges
d) Other Fiber Sources (bamboo, non-woody fibers)
11:30am - 12:30pm Lunch
12:30pm - 1:30pm Section 5 Bruce Janda
Stock Preparation and Control of Tissue properties
a) Thick Stock Systems and Flow Characteristics
b) Refining Processes
c) Chemical Addition
d) Basis Weight Controls
1:30pm - 2:45pm Section 6 Lucyna M. Pawlowska, Kemira
Wet End Chemistry and Control of Tissue Properties
a) Basic Chemistry Concepts
b) Process Chemicals
c) Strength resins
d) Debonders, softeners
e) Absorbency Aids
f) Lotions
g) Adhesives Used in Converting
2:45pm - 3:00pm Break
3:00pm - 4:45pm Section 12 Jeff Peters, BTG
Creping Process and Effect on Product Properties
a) Creping Doctor Blades and Geometry
b) Creping Process and Product Results
4:45pm - 6:15pm Section 9 Daniel Hedou, AstenJohnson
Water Removal and Pressing Processes and Effect on Tissue Properties
a) Pressing Operations for Water Removal
b) Press Fabric Terminology and Properties
c) Press Fabric Manufacturing
d) Press Fabric Design Selection/Application
e) Press Fabric Cleaning and Conditioning
Friday November 7, 2014
8:00am - 9:00am Section 7 Rene Naranjo Jr, BTG
Forming and Consolidation Processes Effect on Tissue Properties
a) Forming Process Measurements
b) Thin Stock Delivery Systems/Piping and Flow Characteristics
c) Headbox Design for Microturbulence and Fiber Distribution
d) Cross Direction Profile Management
e) Jet to Wire Speed – Tissue Property Orientation
f) Tissue Former Designs
9:00am - 10:15am Section 8 Peter McCabe, AstenJohnson
Forming Fabrics Application and Effect on Tissue Properties
a) Forming Fabric Terminology and Properties
b) Forming Fabric Designs
c) Forming Fabric Design Selection/Application
d) Forming Fabric Cleaning and Conditioning
10:15am - 10:30am BREAK
10:30am - 11:30am Section 10 Rene Naranjo Jr, BTG
Drying Process and Effect on Tissue Properties
f) Yankee Dryer Design, Operation, and Safety
g) Cast Iron versus Stainless Steel Dryer Design
a) Yankee Hood Systems – High Temperature Air Impingement Drying
b) Steam Boxes and IR add ins
11:30am - 12:30pm Section 11 Bruce Janda and Peter McCabe
Alternative Processes and Effect on Tissue Properties
a) Wet Crepe Process for AFH Towels/Napkins
i. Structured Tissue Processes to Reorder Physical Relationships
ii. Through Air Drying (TAD, UCTAD)
b) TAD-like Processes
c) TAD Fabric Design
12:30pm - 1:00pm Lunch
1:00pm – 2:00pm Section 13 Lucyna M. Pawlowska
Yankee Adhesion Overview - Dry End Processes and Chemical Additives to Achieve Properties
a) Creping Process Description
b) Crepe Adhesives Properties and Chemistry
c) Crepe Releases Properties and Chemistry
d) Coating Effect on Creping Process and Sheet Properties
e) Creping Application Concepts
f) Common Creping Process Problems and Solutions
g) Case Studies
2:00pm - 3:00pm Section 14 Bruce Janda
Dry End Sheet, roll handling and converting to improve/preserve properties
a) High Speed Sheet Handling/Dust Control
b) Tissue Calendering
c) Tissue Reel and Rewinding Processes
d) Folding Processes and Sawing
a) Tissue Shipping Issues
3:00pm ADJOURNMENT