Ideal for use in termite and waterproof envelopes, bags and file-folders, packaging
Manufacturing this paper requires skill. Two layers of kraft paper are stuck together using bitumen. High-strength thread is then spun and inserted between the two sheets of paper in both directions (i.e., in the machine direction as well as the cross direction). The threads form a mesh and provides high strength and tamper-proof qualities to the paper. The tar coating provides waterproof and termite-proof qualities to the paper.
This paper is used for various types of packaging applications in defence and civil markets. It is also used for making envelopes, file-folders, bags, etc., where the need is to store documents for a long period of time.