Problem Summary

Wet strength control is a vital aspect of tissue production, particularly facial and toweling grades. 

It is important to achieve the optimum level of wet strength.  High levels are required in today’s high performance kitchen towels, however, a balance between strength and softness is needed in facial grades.  Where cost optimization is the aim, a minimum level should be used to meet quality targets.  Whatever the objective, poor control of wet strength can lead to a number of operational problems.  Typical examples of these include:

Increased operating costs through over use of wet strength resin
Reduced sheet softness
Lower sheet absorbency
Low strength tissue
Increased percentage of out of specification tissue
Increased chemical consumption
Poor runnability

Recommended Solution

The first step towards resolving these problems is to measure the system charge to determine if the wet strength resin is being properly retained. If it is not, a charge control system will be necessary to help retain the wet strength.

If it is determined that the system is too cationic then Hercobond® 2000 Dry Strength Technology is recommended.  Hercobond® 2000 is an anionic polymer that with help retain wet strength resulting in improved wet tensile strength as well as higher dry tensile.  In conjunction with Hercobond® 2000, the latest high performance Kymene® Wet Strength Technology offers improved retention in the sheet and therefore higher levels of wet strength.

Reduced operating costs
Improved softness
Better absorbency
Higher strength
Reduced rejects
Reduced chemical consumption
Improved productivity