From paper-mill to pressroom by William Bond WheelwrightFrom paper-mill to pressroom by William Bond Wheelwright

From paper-mill to pressroom

byWilliam Bond Wheelwright

Paperback | February 8, 2012

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated.1920 Excerpt: ... CHAPTER TEN PRESSROOM DIFFICULTIES TECHNICAL difficulties with paper in the pressroom arise from many sources. They may be conveniently classified into three groups: Difficulties for which the manufacturer is responsible; difficulties for which the printer is responsible, and difficulties due to atmospheric and other natural conditions not entirely within human control. Let us consider some of the first group. Uniformity.--Probably the most frequent source of trouble is lack of uniformity, either in weight, thickness or finish. This is chargeable to carelessness on the part of the paper-machine tender. A run of paper which varies in weight will naturally vary in thickness, and, obviously, this could account for uneven color in presswork. These variations would not necessarily be accompanied by a variation in finish. To make paper uniform in all three respects necessitates, firstly, uniform consistency of the pulp--or "stuff," as it is technically called--at the point where it flows onto the machine. A uniform volume of stuff and uniform speed of the machine are also demanded. The speed of the machine and the volume of stuff are quite readily controlled, but as the amount of water used by the beater-man in preparing the stuff is usually judged by the appearence of the pulp in the beater, there are always such variations as are peculiar to this human factor. The difficulties of the machine-tender may often be traced to the beater-man, not only on account of the amount of water in the mixture, but also because of the irregularity in the length of fiber from one beaterful to another. Assuming that the stuff is right and the formation on the machine is good, the pressing of the paper next demands close attention. It is obvious that any unevenness of pressure wil...
Title:From paper-mill to pressroomFormat:PaperbackDimensions:28 pages, 9.69 × 7.44 × 0.06 inPublished:February 8, 2012Publisher:General Books LLCLanguage:English

The following ISBNs are associated with this title:

ISBN - 10:0217820301

ISBN - 13:9780217820301