Containerboard
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Quality papers for the most demanding requirements
At three locations in Germany, Progroup produces high-quality containerboard exclusively on the basis of recovered paper. The three high-performance plants ensure that Progroup's eleven corrugated sheetfeeder plants receive a continuous supply of raw materials. With its “K-Line” and “SLW-Line” product lines, Progroup offers a wide range of paper grades. .
Own paper supply
Progroup supplies a wide range of different paper varieties with grammages of from 60 to 230g/m2. The special technology of the PM2 paper machine makes it possible to produce light, fibre-saving papers from the Next FibreⓇ brand for “Next Generation” corrugated board that is lighter and powerful at the same time.
K-LINE
Created for many assignments. Programmed for strong performance.
The requirements placed on kraft papers today extend in two directions: specialist papers for specific applications and less fibre use while retaining consistent strength properties. Progroup is able to meet both demands with the K-line. Depending on where the packaging is going to be used, priority is given to different strength criteria for the papers and corrugated board – such as penetration resistance and stackability. Progroup uses four steps to adapt the papers to suit the relevant performance requirements.
SLW-LINE
The “green” basis for a corrugated board generation.
Recovered paper is the most important raw material used in the manufacture of containerboard today. Global demand is rising – the supply is becoming scarcer and the price will continue to fluctuate at a high level. To ensure that corrugated board also remains competitive as a product in the future, Progroup Paper has with the SLW-line developed containerboard that saves resources and is strong at the same time.
Quality papers for the most demanding requirements.
The brands Proliner for test liner papers and kraft liner substitutes from 80 to 230 g/m2 and Promedium for corrugated board papers from 60 to 180 g/m2 meet the most demanding requirements. New and pioneering additions to our range are the Next FibreⓇ papers – economically produced high-performance papers with a low grammage, made from 100% recovered paper in a way that conserves resources. All papers pass through a consistent quality assurance process, and reliable brand quality is guaranteed. Ask us about technical details.
Proliner K - Grammage range 115 – 175 g/m²
The high-quality kraftliner substitute for the highest SCT values.
- Proliner K is a high-quality, two-ply kraftliner substitute made from high-quality kraft-containing recovered paper.
- Proliner K achieves, thanks to its specific raw material composition, higher SCTq values than kraftliner and kraftliner substitutes which are commonly found in the market.
- This means that Proliner K is ideally suitable for packaging in which a high level of stackability is required.
Use
- Packaging in warehouses and transportation that is exposed to high stacking crush pressures. Also stacking trays, packaging for spare parts, packaging which is exposed to special climatic conditions such as in refrigerated depots and also fruit and vegetable crates.
Grammage
- from 115 to 175 g/m2
Wet strength
- Can be set up to 12N
Cobb 60
- < 60 g/m2
Approval
- Proliner K is approved for use in contact with food according to XXXVI Recommendation of the German Institute for Risk Assessment (BfR) and, thanks to its FSC® certification (FSC® C106840), it conserves the environment and resources.
- Proliner K has been reviewed by the Papiertechnische Stiftung (PTS) Munich. The following parameters were selected here:
- Indicative determination of the mass per unit area (mA) based on DIN EN ISO 536
- Bursting strength (BW) acccording to DIN EN ISO 2759
- Short-span compression strength (SCT) in the cross direction (CD) according to ISO 9895
Promedium S - Grammage range 135 – 140 g/m²
High-performance fluting optimised in CMT and SCT.
- Promedium S is a high-quality, two-ply containerboard with higher CMT and SCT values compared to a conventional corrugating medium.
Use
- Promedium S is particularly suitable for use with flutes in heavy-duty packaging for storage as well as transport packaging for bulky goods and industrial goods.
Grammage
- From 135 to 175 g/m2
Wet strength
- Can be set up to 12N
Approval
- Promedium S is approved for use in contact with food according to XXXVI Recommendation of the German Institute for Risk Assessment (BfR) and, thanks to its FSC® certification (FSC® C106840), it conserves the environment and resources.
- Promedium S has been reviewed by the Papiertechnische Stiftung (PTS) Munich. The following parameters were selected here:
- Indicative determination of the mass per unit area (mA) based on DIN EN ISO 536
- Short-span compression strength (SCT) in the cross direction (CD) according to ISO 9895
- Flat crush resistance (CMT) according to DIN EN ISO 7263
Promedium K - Grammage range 135 - 175 g/m²
The high-quality semi-chemical pulp substitute for higher CMT values.
- Promedium K is a high-quality semi-chemical pulp substitute made from high-quality kraft-containing recovered paper.
- Promedium K is ideally suitable for packaging where a high level of stackability and a high flat crush resistance are required.
Use
- Packaging in warehouses and transportation that is exposed to high stacking crush pressures. Also stacking trays, packaging for spare parts, packaging which is exposed to special climatic conditions such as in refrigerated depots and also fruit and vegetable crate.
Grammage
- 135 g/m2
Wet Strength
- Can be set up to 12N
Approval
- Promedium K is approved for use in contact with food according to XXXVI Recommendation of the German Institute for Risk Assessment (BfR) and, thanks to its FSC® certification (FSC® C106840), it conserves the environment and resources.
- Promedium K has been reviewed by the Papiertechnische Stiftung (PTS) Munich. The following parameters were selected here:
- Indicative determination of the mass per unit area (mA) based on DIN EN ISO 536
- Short-span compression strength (SCT) in the cross direction (CD) according to ISO 9895
- Flat crush resistance (CMT) according to DIN EN ISO 7263
Proliner - Grammage range 70 - 135 g/m²
The “green” basis for a new corrugated board generation.
- Lightweight, single-ply high-performance testliner 3 in the grammage range of ≤ 90g/m2
- Thanks to the paper machine configuration which is selected, good strength characteristics in respect of SCT, CMT and bursting strengths are achieved despite low grammages.
- Ideal for use in lightweight corrugated board and packaging
- Resource-conserving use of raw materials, along with optimum strength characteristics.
- The full strength potential is displayed in combination with adapted corrugated geometries of the corrugated board (Next Board®).
Special properties:
- Promedium and Proliner from the SLW-line are manufactured in a way that conserves resources and save the environment an average of 52% of CO2 emissions. The greater number of linear metres per reel also helps to save CO2 during transport.
Use
- In light protective and non-load-bearing packaging, trays for food, toiletries and cosmetic products.
Approval
- Approved for use in contact with food according to XXXVI Recommendation of the German Institute for Risk Assessment (BfR) and, thanks to its FSC® certification (FSC® C106924), conserves the environment and resources.
Promedium - Grammage range 70 - 135 g/m²
The “green” basis for a new corrugated board generation.
- Lightweight, single-ply high-performance corrugating medium in the grammage range of ≤ 90g/m2
- Thanks to the paper machine configuration which is selected, good strength characteristics in respect of SCT, CMT and bursting strengths are achieved despite low grammages.
- Ideal for use in lightweight corrugated board and packaging
- Resource-conserving use of raw materials, along with optimum strength characteristics.
- The full strength potential is displayed in combination with adapted corrugated geometries of the corrugated board (Next Board®).
Special properties:
- Promedium and Proliner from the SLW-line are manufactured in a way that conserves resources and save the environment an average of 52% of CO2 emissions. The greater number of linear metres per reel also helps to save CO2 during transport.
Use
- For example for use with microflutes.
Approval
- Approved for use in contact with food according to XXXVI Recommendation of the German Institute for Risk Assessment (BfR) and, thanks to its FSC® certification (FSC® C106924), conserves the environment and resources.
- Production with closed water circuit.
- Focus on the production of high-performance containerboard with improved technical figures. “K-line” with PMS, PMK, PLK and if necessary ProKraft.
- Thanks to the use of a recovered paper drum and downstream refiners, particularly effective fibre preparation, activation of strength potential.
- Advanced technology allows resources and energy to be used in a way that conserves the environment.
- Production of resource-conserving superlightweight (SLW) containerboard that also has very strong performance.
- Selected machine configurations enable good strength characteristics in relation to SCT, CMT and bursting despite low grammages
- Gentle drum pulping process to conserve the maximum potential of the raw materials.
- Focus on the production of lightweight papers
- Only paper machine in Europe that produces containerboard with a grammage of from 70 g/m² and > 1550 m/min.
- Numerous speed records up to 1740 m/min
PM3, SANDERSDORF-BREHNA
| Working width | 9,20 m |
| Annual production | 750 Tto Containerboard |
| Daily production | 2.430 t LE |
| Specific production rate | > 11 t/h/m |
| Grammage range | 90 - 130 gsm |
| Design speed | 1.700 m/min |
| Operating speed | 1.600 m/min |
| Commissioning | 2nd half of 2020 |
| Size of plot | 450,000 m² |
| Total investment | 375 million Euro |
What customers repeatedly want to know – questions and answers
We have put together for you the answers to the most frequently asked questions about a wide range of different topics relating to paper production and safe use with foodstuffs. If your concern or question has not been addressed, we ask you to get in touch with us.
What raw materials are used in paper production?
- Unsorted mixed recovered paper (may contain newspapers)
- Sorted mixed recovered paper (may contain newspapers)
- Supermarket recovered paper
- New shavings of corrugated board
- Used corrugated kraft 1
- Used corrugated kraft 2
- Unused kraft sacks
- Unused kraft paper Unused, uncoated liquid packaging board without aluminium or PE (production waste)
- Long fibre sulphate pulp
Beyond that, the following recovered paper types are not used for the production of containerboard at Propapier:
- Newspapers
- Unsold newspapers
What additives are used in the papers?
REACH Regulation (EC) No. 1907/2006
Pursuant to the REACH Regulation, the qualities produced by Progroup Paper are “products” which are not subject to the registration requirement.
As a so-called “downstream user”, our plants are not subject to the REACH registration requirement either. However, we can assure you that, at present and in the future, we will only use raw materials, additives and finishing substances which are registered pursuant to the REACH Regulation.
Biocides & preserving agents
The biocides & preserving agents used in our production are in compliance with the current Regulation (EU) 528/2012 and are used to treat the water loop. There is no direct application in the final product. The use of Methylisothiazolinone can occur, but there are no residues detectable in the products (detection limit 0.5
What certificates does Progroup Paper have?
PM1
EnMS DIN EN ISO 50001
FSC® certification (FSC-C106840) according to standard FSC-STD-40-004 version 2-1 and FSC-STD-40-007 version 2-0.
PM2
UMS pursuant to Regulation (EC) No. 1221/2009 (EMAS III Regulation)
FSC® certification (FSC-C106924) according to standard FSC-STD-40-004 version 2-1 and FSC-STD-40-007 version 2-0.
Is there an independent clearance declaration for the papers?
The grades produced by Progroup Paper – Promedium, Proliner, Promedium S, Promedium K, Proliner K and Prokraft – are safe to be used as food packaging. They may be in direct contact with dry, non-greasy food. Dry, non-greasy foods with a large surface area (e.g.: rice, pasta, semolina) may be packaged with the additional use of suitable intermediate packaging. The food safety of the paper grades is regularly checked and updated. The declaration of no objection is in compliance with:
- Regulation (EC) No. 1935/2004 of the European Parliament and Council, as of 18.07.2009
- Directive RoHS 2011/65/EU, as of 08.06.2011
- German Food, Consumer Goods and Feeding Stuff Code (Lebensmittel-, Bedarfsgegenstände- und Futtermittelgesetzbuch - LFGB), as of 01.12.2104
- German Recommendation XXXVI, as of 01.07.2015
- Directive 94/62/EC on packaging and packaging waste, as of 07.02.2013
- Model Toxics Legislation, last amended in December 2008
Corrugated sheetboard made to measure
At eleven sites in Europe, Progroup produces high-quality corrugated sheetboard. The product range includes a wide selection of profiles of single-wall, double-wall or triple-wall corrugated board. The sheets that are produced on high-tech machines are 100% recyclable.
Next Generation Products
Progroup offers high-performance containerboard and corrugated board in the form of Next Fibre®, Next Board®. Progroup develops products that are environmentally friendly and conserve resources by making investments in new papers, new corrugated board designs and new technologies.