Patent ID: 6159330
Filing Date: 2000-12-12
Classification: B43M,Y10T

Abstract:
A method of sealing a business form having longitudinal and transverse patterns of pressure activated cohesive or adhesive requiring a sealing force of at least about 50 lbs. per lineal inch, comprising:(a) moving the business form in a first direction substantially parallel to a longitudinal pattern of pressure activated cohesive or adhesive thereon; and(b) while the form is moving in the first direction passing the form through a nip between a substantially smooth surfaced first roll and a serrated or ribbed second roll, the rolls rotated about substantially parallel axes of rotation, so as to compress at least 50%, but less than 90%, of each of the longitudinal and transverse patterns of pressure activated adhesive or cohesive, by applying a force of over 50 lbs. per lineal inch at the serrations, or ribs.