Optimize fiber composition

• The cost of fibers accounts for a significant proportion of total production costs.
• The costs and availability of raw materials vary - sometimes greatly.
• High-quality raw materials should be used as selectively as possible.
• The raw material quality of waste paper is continuously decreasing.

With our know-how, our products and solutions, we can support you in optimizing the fiber composition as follows - and all while maintaining or even improving product quality:

• Shift in the composition of raw materials.
• If possible, in the direction of lower-quality, more sustainable raw materials.
• Reduction or shift of basis weight.
• Improvement of the fiber yield in fiber preparation and thus a reduction in reject quantities.

All projects presented…

• ... show that it is possible to save resources while reducing production cost.
• ... achieved consistent or even improved product quality.
• ... have a return on investment of a few months only taking into account the overall added value achieved.
• ... have been implemented many times - no prototypes or trial installations.

TARGETS ACHIEVED

• Shift in raw material composition while maintaining the same product quality.
• Replacing virgin pulp with waste paper.
• Saving of primary fiber > 3 %.
• Return on investment within a few months.

TARGETS ACHIEVED

• Shift in raw material composition while maintaining the same product quality.
• Replacement of purchased long-fiber pulp with in-house short-fiber pulp > 8 % or 5,600 t per year.
• Elimination of logistics for the purchased pulp.
• Return on investment within a few months.

TARGETS ACHIEVED

• Reduction of reject quantities and thus improvement of fiber yield by 980 t/a.
• Waste paper as a raw material is brought into the product and does not have to be discharged.
• This results in a reduced need for reject dewatering (electricity) and logistics for landfill or thermal recycling.
• Same or even improved product quality.
• Return on investment within a few months.  

TARGETS ACHIEVED

• Formation optimization of white top layer and brown bottom layer made it possible to shift basis weight.
• Replacement of virgin fiber with secondary fiber.
• Reduction of B-quality and rejects through general increase in product quality.
• Waiting times for laboratory values such as surface, strength and sheet formation massively reduced.
• Improved product quality.
• Return on investment within a few months.

TARGETS ACHIEVED

• Use of converting broke increased by 50%.
• This replaces virgin fiber with broke.
• Increase in refiner plate service life by 30%.
• 75% reduction of fines in the flotation.
• Equal or even improved product quality. 
• Return on investment within a few months.