Paper Manufacture and Grades Questions and Answers

Answer: C

A dandy roll is used to make a watermark.

On a Fourdrinier paper machine, the dandy roll is a light wire-covered cylinder that rides on the wet web of fibres. A raised design on its surface displaces fibres so that the paper is thinner there, and the design shows as a lighter watermark when the sheet is held to the light. The dandy roll also gives the wove or laid pattern.

It does not colour the paper, it is not a stencil, and 'rotating' simply describes how it moves, not what it is for.

Answer: D

The largest of the sizes listed is A2.

In the ISO A series, each size is half the area of the one before it, so the smaller the number, the larger the sheet. A0 is one square metre (841 x 1189 mm), A2 is 420 x 594 mm, A3 is 297 x 420 mm and A4 is 210 x 297 mm.

A10 is the smallest standard size, only 26 x 37 mm. Among A2, A3, A4 and A10, A2 therefore has the highest dimensions.

Answer: A

The answer is Rag Paper.

Rag paper is made from cotton or linen fibres, originally from rags and now usually cotton linters. The long, strong fibres make it durable, crisp and long-lasting, so it is used for banknotes, certificates, archival documents and fine stationery, and it costs more than wood-pulp paper.

'Textile paper' and 'fabric paper' are not the trade terms. 'Woodfree' paper means paper made from chemical wood pulp without mechanical pulp, which is still made from wood.

Answer: A

Softwood pulps have long fibre and high strength.

Softwoods (conifers such as pine and spruce) have long fibres, about 3 to 4 mm, which interlock well and give paper high tensile and tear strength. They form the reinforcing part of most paper furnishes.

Hardwood pulps (eucalyptus, birch, acacia) have short fibres, about 1 mm, which give bulk, smoothness and good opacity but less strength. So the options pairing short fibre with bulk or opacity describe hardwood, and long fibre is not chiefly valued for opacity.