VIB Tech Dictionary

A revolving fourdrinier roll in contact with the wire. It creates a vacuum as it turns which removes water from the sheet.

Rectangular tapered box (front to back) through which stock flow to the head box is equalized across the machine.

A measure of the resistance of paper to a tearing force in the machine and cross direction.

The department responsible for the technical areas of the mill, including environmental, energy, etc.

The strength of paper when it is subjected to a pull from each end, usually expressed in pounds per square inch.

The force parallel to the place of the specimen required to produce failure in a specimen given width and length under specified conditions of loading.

Roll usually before the size press and calender stack that is moved vertically by the sheet. This compensates for minor speed changes in the dryer sections, maintaining a uniform sheet tension.

An area designated and equipped for testing within a production department.

A positive displacement pump used to pump stock of high consistency.

Adjustment screws located on the head box slice which serve to even up the weight and moisture profile by raising or lowering the slice in isolated areas.

A refiner used to break up any large pieces of broke and to control the couch vacuum and wet end line on the machine.

Tissue papers are light papers with ideal softness, strength and absorbency.

Filler added to paper which has extremely good brightening properties and improves opacity.

A chemical test which uses a reagent of known concentration to determine the amount of another chemical in a sample solution by adding the known reagent to the sample at a controlled rate until an indicator in the sample changes color.

On the twin wire former the top wire's purpose is to eliminate two-sidedness of the sheet.

Reports to department superintendent; responsible for safety, quality and the production of people on his shift.

Specific plus and minus allowed in the finished product.

(1) Maximum width of finished paper that can be made on a paper machine, expressed in inches.
(2) Indicates the maximum width of finished paper which can be made on a particular machine.

Small jet stream of water used to trim the edges of the sheet on the paper machine.

A strip of paper trimmed off each edge of the sheet at the wet end or dry end.

A cluster of four press rolls arranged to form three roll nips with no open draws.

The stream of stock coming out of the tube section just before the surge tank. This gives a high turbulence effect to the stock.

Laboratory workers that perform sampling and testing.

A wet end configuration using two driven wires, top and bottom, along with other components to form a sheet of paper.

A term applied to paper having large differences in color or finish on the wire and felt sides of the same sheet.