Printing and writing paper

Printing and writing papers are paper grades used for newspapers, magazines, catalogs, books, commercial printing, business forms, stationeries, copying and digital printing. About 1/3 of the total pulp and paper marked (in 2000) is printing and writing papers. The pulp or fibers used in printing and writing papers are extracted from wood using a chemical or mechanical process.

In the United States printing and writing papers are separated into four main categories:

1. Uncoated Freesheet Paper
2. Uncoated Mechanical Paper
3. Coated Freesheet Paper
4. Coated Mechanical Paper

Writing paper standards

Specifications	MD/CD	Unit	Level A	Level B	Method
Substance		gsm	80-120	60-80	TCVN 1270:2000
Durable ≥		mN.m²/g			TCVN 3229:2000
	MD		5.7	4.1
	CD
Tearing strength ≥		m			TCVN 1862:2000
	MD		3800	3200
	CD		2200	1800
Water absortiveness Cobb 60		g/m²	23	23	TCVN 6726:2000
Brightness ISO ≥		%	78	70	TCVN 1865:2000
Opacity ≥		%	85	85	TCVN 6728:2000
Roughness Bendtsen ≥		ml/ minute	280	400	TCVN 3226:2001
Ash content ≥		%	3	3	TCVN 1864:2001
Moisture content		%	7±1	7±1	TCVN 1867:2001

Types

• Fine paper
• Machine finished coated paper
• Newsprint