Environmental protection and sustainability are not just buzzwords for us, but an integral part of our work. Raw materials are becoming increasingly scarce worldwide and environmental pollution is on the rise. By recycling waste paper, Köhlerpappen actively contributes to the preservation of forests.
All products can be delivered FSC® or PEFC™ certified.
Our machine equipment, controlled with the latest information technology, allows us unusual flexibility. Your special requests for format, color, quality, texture and number of pieces can be realised in the best possible way.
Our brands are top products in qualitative uniformity and processing quality due to constant improvement of processes and technology. With the most modern cutting machines, we support our customers with tailor-made results.
Paper products have a strong interaction with the ambient air.
Responsible for this is the hygroscopic property of the (natural) paper fibres, i.e. the ability to absorb moisture or release it to a drier environment.
Only when there is a “moisture equilibrium” between air and paper or board does the fibre come to rest and stop “working”.
Ideally, paperboard should be stored and processed under the same standardised climatic conditions.
Temperatures in the storage and processing areas should be 21° Celsius and relative humidity of 50 – 55 %.
When cardboard is moved from a cold storage room to a heated processing room, the pallets must be given sufficient time to warm up before the moisture-proof wrapping (stretch film) is removed.
When cold cardboard is unpacked in a warm and humid environment, water condenses on the edges (cut edges) of the cardboard and leads to bending up of the edges, wavy cardboard and change of dimensions (length, width, thickness).
So be sure to give the cardboard about 48 hours to acclimatise.
The pH value indicates the hydrogen ion concentration in an aqueous solution. Solutions with a pH value lower than 7 react acidic. Solutions with pH = 7 react neutrally. Those with a pH value greater than 7 react alkaline. Many vital processes take place within certain pH limits.
The term “pH value” is explained like this:
The small “p” stands for “potentia”, the capital “H” for the symbol of hydrogen. “pH” therefore means “potentia hydrogenii” (Latin), which means “potency of hydrogen ion concentration”.
Ongoing measurements show a neutral value of our products of approx. pH 7.0. Due to the use of our raw material mixed waste paper (1.02), we unfortunately cannot give any guarantee for the stated value. Fluctuations may occur due to the raw material. This applies to all KÖHLER products made from 100% mixed waste paper.
For our product KÖHLERlight 400, which is made of 100 % groundwood pulp, current measurements have shown a neutral value of approx. pH 7.0. The fluctuation range due to the use of raw materials is very small, so you can assume a neutral range.