Quality requirements and inspection methods for po

Quality requirements and inspection methods for post press processing (III)

1 subject content

this standard specifies the quality requirements and inspection methods for adhesive binding of books and periodicals

2 reference standard

gb 9851 printing technical terms

gb 788 book and magazine format and size

3 classification

3.1 milling back

3.2 knurled knife

3.3 where does the software of spring testing machine highlight the sawing

4 quality inspection

makes up for the blank in the domestic tensile strength test of steel structure weldments. 4.1 milling back depth: the depth of three fold book block is 2.0-3.0 mm, the depth of four fold book block is 2.5-3.5 mm, and the skew is no more than 2.0 mm

4.2 the scribing of the book post is arranged correctly, which is on the last crease line and can penetrate the adhesive

4.3 saw cut

4.3.1 number of saw cut: 64 open book block, 4 open: 32 open book block, open; 16 open book block, mouth

4.3.2 depth: 2-3 mm, width: 1-2 mm

4.4 milling back and sawing shall be subject to the sticking of the innermost page of the book post

4.5 stick the book back paper

4.5.1 if the thickness of the book block is more than 15 mm, stick the book back paper. The thickness of the book block is less than 15 mm, and the back paper can not be adhered

4.5.2 the specification of cover paper is more than 150g, and it can not stick the back paper of the book

4.5.3 the length of the paper pasted on the back of the book by machine (adhesive binding machine) is longer than the length of the book block by mm, and the width is the same as the width of the back of the book, or both sides are less than the width of the back of the book by 1 mm

4.5.4 the length of the manually pasted back paper is 20-40 mm longer than the length of the book bundle, and the width is the same as the length of the book block, with a tolerance of 3 mm

4.5.5 when pasting the back paper of the book, the shrinkage of the book block at the head or foot shall not exceed 2.5mm, and the shrinkage of the back of the book shall not exceed 1.0mm. After pasting the back paper, the length of the back paper shall be subject to the length of the book block, with a tolerance of 3mm. It shall be flat, firm, and free from fracture and deflection

the publication administration of the people's Republic of China approved the automatic calculation of the arithmetic mean value of 10 samples after the completion of the experiment, and the implementation of

4.5.6 points is correct. The back of the book has no bars and lines, so it doesn't cut the pages

4.6 mechanically paste the cover and finalize the design

4.6.1 the side glue width of the mechanical adhesive cover is 3-7 mm

4.6.2 the size of the pasted cover is correct, firm, straight and flat. The words on the back of the book and the pattern of the edition frame shall be subject to the cover page, with an error of 15% below 100 pages and 10% above 100 pages

4.6.3 the back of the book after shaping shall be flush, and the bar line shall not exceed 1mm. No sticky cover, no corner

4.7 the viscosity of the adhesive is appropriate, the back paper and cover of the book are firmly adhered, and the adhesive does not overflow

5 detection method

5.1 measurement method

use a millimeter ruler to check the skew and depth of the milling back, and the length and width of the paper on the back of the book

5.2 visual inspection method

professional technicians visually inspect the product quality according to the standard requirements

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additional notes:

this standard is proposed and under the jurisdiction of the publication administration of the people's Republic of China

this standard is drafted by China Printing Corporation

the drafters of this standard are Wang huaizhu and Shi Qunfang