Per Engstrand

Title: The Innovations of Per Engstrand

Introduction

Per Engstrand is a notable inventor based in Aby, Sweden. He has made significant contributions to the field of paper and paperboard production. His innovative approach focuses on utilizing high yield pulp in the manufacturing process.

Latest Patents

Engstrand holds a patent for a paper or paperboard product that comprises at least one ply containing high yield pulp. The patent outlines a method of producing this product, which includes several key steps. First, a furnish is provided that contains at least 50% high yield pulp, produced with a wood yield above 85%. Next, the furnish is dewatered to form a moist web, which is then pressed to achieve a dry solids content of at least 40-70%. Finally, the moist web is densified to a density above 600 kg/m3 in a press nip of a paper machine, ensuring that the final product contains at least 30% high yield pulp.

Career Highlights

Throughout his career, Engstrand has worked with various companies, including Ipco Sweden AB. His experience in the industry has allowed him to develop and refine his innovative methods in paper production.

Collaborations

Engstrand has collaborated with notable individuals such as Hans E Hoglund and Gunilla Pettersson. These partnerships have contributed to the advancement of his work and the successful implementation of his patented methods.

Conclusion

Per Engstrand's contributions to the field of paper and paperboard production highlight his innovative spirit and dedication to improving manufacturing processes. His patent demonstrates a significant advancement in utilizing high yield pulp, which may influence future developments in the industry.