To read this content please select one of the options below:

Bow and Twist in the Printed Circuit Manufacturing Industry

D. Heywood (Isola Werke UK Ltd, Cumbernauld, Scotland)

Circuit World

ISSN: 0305-6120

Article publication date: 1 February 1991



‘Bow and Twist’ is a phrase that is commonly used to cover all forms of non‐flat distortion in the PCB industry. The shape that distortions can assume are analysed and quantified; the size and shape of distortion are compared with the physical properties of the material that give rise to them. The special care needed in the manufacture of multilayer circuits is highlighted. The effects of more advanced material and of heatsinks are considered.


Heywood, D. (1991), "Bow and Twist in the Printed Circuit Manufacturing Industry", Circuit World, Vol. 17 No. 3, pp. 23-27.




Copyright © 1991, MCB UP Limited

Related articles