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środa, 11 Lipiec 2018

Cardboard packing boxes good for packing

Cardboard packing boxes

Carton – paper products weighing from 160 g/m² to 315 g/m²[1] (in the printing industry the range usually ranges from 200 g/m² to 500 g/m²). Used for printing and manufacturing board books, book covers, postcards, office folders, boxes and other packaging.

Cardboard packing boxes ecological solution

Old facilities and tools for the production of handmade paper. Modern paper production (wood-free). The fibrous material (virgin or recycled mass) is dissolved in devices called hydropulpers. The fibrous mass shall be cleaned and sorted as necessary to separate heavy (e.g. sand) and light (splinters, bundles, foils, polystyrene, etc.) impurities. cardboard packing boxes

The cellulose fibrous slurry is pumped through mills, where it is subjected to a grinding process, after which it obtains the so-called cigarette capacity. Depending on the range of products manufactured, mass additives are added to the fibrous mass: fillers, adhesives and other additives.

The pulp prepared in such a way is directed to the paper machine, where it is fed through an inlet to the moulder sieve, where it is formed by removing water through draining strips and boxes and suction boxes on the bottom side of the sieve. After the forming section, the paper web has a moisture content of 77-85%.
The wet paper web is conveyed on wide felts by presses (groups of double contacting granite or other rollers) where under their pressure the water is further removed to a moisture content of approx. 50-65%.

Cardboard packing boxes new

Cardboard packing boxes easy to dispose of

Depending on the type of paper produced, a surface sealing or coating process may take place.
The final stage of paper making in a paper machine is drying. The paper stream passes through a group of steam-heated hot cylinders, where the paper achieves a target moisture content of 7.5-8%.

The paper is wound on large rolls (tambours), each of which can weigh even several dozen tons individually (which depends on the width of MP[3]).
On the rewinding and shearing machines, the paper is cut into smaller rolls with the use of rotating ring and disc knives (when scrolling the paper from the tambour).
The finished rolls are weighed, packed and labelled.
Description of the modern paper production line

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