Pack201 | Functional Descriptions | Section 5
© Bosch Packaging Technology Inc.
All rights reserved 2012
EN | 3
5.2 Backstand
The backstand supports the sealing film rolls
and guides the film through a series of rollers
so that the film is fed into the former/folding
box at the correct angle and tension� The film
roll must be positioned precisely over the
centerline of the infeed�
Film Reel Holder: The film roll is secured on
the film reel holder between a rear centering
cone and a removable chuck� The rubber
knob is used to find-adjust the film crosswise
during operation� One burn moves the reel
1�75 mm, resulting in a film movement of 3�5
mm�
Balance Arm: The spring-loaded balance
arm acts as a brake to keep the film constant
tension while running� It can be locked in
position which threading the film; unlock it by
removing the pin�
Guide Rollers: The film runs over several
rollers� A photoeye mounted on one of the
rollers detects registration marks on the film�
Balance arm
Rear Cone
Brake Adjust
Setscrews
Film Reel Holder
Removable Chuck
Rubber Knob
Photoeye
Inclination Roller
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