A paper recycling facility. Sorted and baled recovered paper fibre is a primary input material for recycled paper mills. Source: Wikimedia Commons.
The recovered fibre supply chain
Recycled paper begins not at a mill but at a collection point. In Poland, municipal selective waste collection includes a dedicated paper fraction — typically indicated by blue containers or bags. This collected material enters a chain of sorting, grading, and processing before it reaches a paper mill.
The primary grades of recovered paper used in Polish mills correspond to categories defined in the European List of Standard Grades of Recovered Paper and Board (EN 643). These range from mixed paper and board (the most common source from households) through sorted office paper and newspaper to high-grade white paper — each commanding a different price and producing different output quality.
Sorting and grading
Material collected from municipal sources arrives at material recovery facilities (MRFs), where it is further sorted by hand and automated optical systems to remove contaminants — plastics, metals, glass, and food residue. Sorting quality directly affects the brightness and cleanliness of the resulting pulp.
Poland has a network of sorting facilities, concentrated particularly in the Mazowieckie, Śląskie, and Małopolskie regions, which handle the country's paper fraction alongside other recyclables. After sorting, recovered paper is baled and sold to paper mills or traders according to grade.
Pulping and de-inking
At the mill, bales of recovered paper are fed into a hydropulper — a large drum with water and mechanical agitation that breaks the material into individual fibres. The result is a slurry called stock or pulp.
For grades intended to produce printable office paper or newsprint, de-inking is required. The process involves flotation cells, where air bubbles cause ink particles to attach and rise to the surface as foam, which is removed. Alternatively, washing systems dilute and drain ink particles. Most modern European mills use flotation de-inking or a combination of both.
De-inked pulp (DIP) produced in Europe typically achieves brightness levels sufficient for standard office paper grades, though achieving the highest brightness levels often requires mixing with a proportion of virgin or chemically bleached pulp.
Cleaning and screening
Before the pulp reaches the paper machine, it passes through cleaning and screening stages. Cyclone cleaners remove heavy contaminants by centrifugal force; screens with slots or holes remove oversized particles such as staples, adhesive fragments, and plastic films. Stickies — adhesive residues from labels, tapes, and bindings — are a persistent challenge in recycled fibre processing because they can cause deposits on the paper machine and reduce product quality.
Paper forming and drying
Cleaned pulp, diluted to approximately 0.5–1% fibre concentration, is pumped onto the forming wire of a Fourdrinier or twin-wire paper machine. Water drains through the wire, and the fibre mat is progressively dewatered through press sections and then dried over a series of heated cylinders.
Depending on the intended product, the paper web may receive surface sizing (starch application to improve printability and strength), coating for glossy grades, or calendering for a smooth finish. Finished rolls are wound, cut to sheet sizes, and packaged for distribution.
Raw material stockpile at a paper mill. Recovered paper fibre follows a similar pathway as a secondary raw material input. Source: Wikimedia Commons.
Recycled content grades in Poland
Polish paper mills produce a range of products from recovered fibre, including:
- Testliner and fluting — packaging board grades made primarily from old corrugated containers (OCC)
- Newsprint — produced from sorted graphic paper and newspaper grades
- Tissue products — often incorporating a high proportion of recovered paper
- Uncoated woodfree copy paper — produced from high-grade white recovered paper, often with a percentage of virgin pulp
The distinction between these grades matters for procurement: a notebook described as "100% recycled" most likely uses de-inked pulp (DIP) or unbleached recycled pulp, while the cover board may derive from corrugated container grades. The recycled content percentage on packaging refers to the input fibre, not the finished sheet brightness or whiteness.
Regulatory and quality context
Within the EU, recovered paper for paper production is regulated as a waste-derived input under the Waste Framework Directive (2008/98/EC), though End-of-Waste criteria applicable to recovered paper allow it to exit waste classification once it meets specific quality thresholds. The EN 643 standard provides the grade classification that trade contracts typically reference.
Polish mills exporting to EU markets must also comply with EU food contact regulations (EU 10/2011 for plastics; there is no EU-wide framework yet for paper food contact materials, though national guidelines apply) and, where certification is sought, FSC or PEFC chain of custody requirements.
External references
Last updated: June 2026. Information is based on publicly available sources and general industry reference material.
