The manufacturing process of board paper passes through numerous stages from the moment the raw material arrives at the mill, to the moment when the product arrives at the customer’s hands:

DISAGGREGATION
Here starts the fist stage of paper manufacturing: the preparation of the pulp. Cellulose is received in stacks, and disaggregated in the Hydrapulpers.

REFINING
Now, the cellulose goes through a mechanic treatment aiming at developing important physical properties on the board paper. For example: opacity, traction, burst, and so on.

DEPURATION
The depuration is an important operation in the pulp preparation that aims at separating by weight as well as by size the particles present in the cellulose, and which are undesirable for the process.

SHEET FORMATION
The sheet of paper is formed in the machine from a mix in which 1% are fibers, and 99% is water. This is necessary so that the entry boxes, when expelling this suspension, have the ability to provide a very homogeneous mix, and thus enables the ideal arrangement of the fibers in the board paper.

LAYER COMBINATION
Distinct raw materials are used in the manufacturing of board paper. Each one is used in a different layer of the structure, and contributes to some specific characteristic of the set. The combination of these layers is made in a controlled way, and occurs mostly by mechanical interlacing of the fibers.

DRYING
In this phase of the process it is necessary to draw the in-fiber water, that is, the water that is inside the fibers. Because this process is a hard one, the part of the board paper machines required for this operation, is the largest of all. Saturated vapor cylinders in their interior are charged with providing the thermal energy needed for water removal.

MONOLUCID
An important piece of equipment that performs not only the sheet drying, but also allows for the “polishing” of the board paper surface as long as it is operated in the specific conditions for this end.

SUPERFICIAL ADHESION
Aimed at meeting the most demanding printing processes, employing dissolution to “glue” the fibers at the surface of the board is done in the adhesion press (size-press).

DRYING
Again, the board paper passes through a water removal process by the means of vapor-saturated heated cylinders.

COATING
Applying couche ink in two steps allows for excellent superficial finishing of the board, thus qualifying it to be used in superior and demanding printing works.

REELER
The board paper production is segmented in the form of jumbo reels that are sampled, and tested in laboratory, aiming at quality control, and the preparation of the following phases.

REWINDER
From a jumbo reel, smaller units are produced – the rolls. These units may be packed for direct forwarding to the customer or sent to sheet cutting operations.

CUTTER
According to the customer’s needs, the product is processed at the cutters that do the job of transforming the board paper rolls in sheets of paper with the size desired by the customer.

FINISHING
Finally, the finishing and packaging operations allow for the product to be in full condition of being forwarded to the customers.