As already seen in the overview on printing technologies, rotogravure prints are easily deinkable in general, as shown in Figure 1. From almost 100 tests, 95 % achieved a positive deinkability result. The few which failed in the test were uncoated magazines and failed due to dirt particles. Red discolouration was in some cases visible but just…
Offset printed products represent by far the largest group in the investigations, comprising 56 % of all tests, mainly newspapers and magazines. Newspapers generally correspond to coldset printing, in which drying occurs primarily by absorption. Flyers printed on newsprint-type papers as well as magazines and flyers printed on SC and LWC papers normally use heatset printing systems for print runs…
A scientific evaluation of the factors influencing deinkability has to consider the printing technology and the printing conditions. The results of the deinkability survey in Figure 1 give a general average overview. Detailed technical data of the printing process are not always available. In this average documentation of deinkability results, all relevant parameters are shown with its…
The deinkability of conventionally printed products depends largely on the printing technology and on the type of ink applied on the paper substrate, but sometimes also the paper itself (coated or uncoated), and the age of the printed product at the time of deinking. The Deinkability Score assessment defines categories of printed products with different target values…
The deinkability assessment according to EPRC (European Paper Recycling Council) sets targets and limits for the evaluation of the deinkability of a print product and is based on the results of INGEDE Method 11.1 In total, five parameters have to be determined for the assessment of the deinkability (Figure 1). Three parameters characterise the deinked pulp (DIP) quality. Luminosity Y gives information…
Newspapers and magazines in Europe are mainly based on papers manufactured from mechanical pulp and deinked pulp, so-called wood-containing papers. The most efficient deinking processes for these paper products are in an alkaline environment. Therefore, deinkability tests developed also assume alkaline deinking conditions. INGEDE was the first and only association which established a deinkability standard…
For graphic paper products deinkability is in the focus of a recyclability test. Nevertheless, repulpability has to be ensured as a prerequisite for a deinking test. Graphic paper products typically have no problems with repulpability and the yield of the pulping process is not determined especially. In contrast, packaging paper products can behave completely different…
The recycling of paper and board products such as printed material, folding boxes, polyethylene coated liquid containers, or envelopes with pressure sensitive adhesives and transparent windows has decisive importance for improving the use of paper for recycling. In this context, good recyclability refers to the easy processing of the secondary fibre raw material into a…
In general, paper and board are easily re-usable after their manufacture. This is daily practice in paper mills by re-using dry broke from finishing operations and off-quality paper. Exceptions are special characteristics like wet-strength paper and the like. On its further path, paper and board gets converted by applying coating colours, inks, varnishes, laminates, adhesives and other…
Collection systems exist in two general types, as pick-up and as drop-off systems, sometimes with both types in parallel. In most countries, the collection systems is defined by the authorities, often on municipality or department level. Particularly in regions where an officially organised collection system does not exist to a large extent, the private and…
