Critical Quality Tests for Various Grades of Paper

Critical quality tests for various grades of paper. All products at Century Pulp & Paper undergo various stringent tests to maintain quality and consistency.

Absorbent kraft

COP (Castor Oil Penetration): This method is used to measure the absorbency rate of paper for printing inks with an oil-based vehicle. It is used only for easily permeable papers such as newspapers, books and mimeographs. However, this method can also be used for any paper where the absorbency of an oil-based vehicle is important. A correlation has been established between the results of this test and the printing quality of uncoated papers. The oil absorbency of paper is related to its porosity and internal structure.

MICR

Sensitivity Test – In MICR paper we put various types of chemicals which react when these solvents are put and turn the paper into some color. This property is to avoid forgery. The various chemicals used are Benzyne, Cloroform, Alcohol, Sodium Matabisulphite, Oxalylic acid, Amonia, Acetone, Calcium Hypo etc.

For these papers to meet quality standards, the following requirements must be met: a. Water mark should be clear b. Smoothness achieved c. UV light should not glow d. Other BIS norms like GSM and tear factor must also be met.

CONTACT US

Century Pulp and Paper
610-611, DLF Tower-B, Jasola District Center,
New Delhi- 110025

Phone: +91 011 48822222 | Fax: +91 011 48822235/245
Email: cppdel@birlacentury.com | export@birlacentury.com

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