Page 35 - Training 2019

Contents
INTRODUCTION: ........................................................................................................................... 2

MANUFACTURES OF CHAMBER BLADE UNIT FOR COATING UNITS: .............. 2
THE RIGHT END SEALS WILL PREVENT LEAKS IN YOUR SYSTEM: ................. 3

Problems that result from failed End Seals: ............................................................ 3
Why Chamber Leaks Occur: ............................................................................................... 3

Check your ends seals for the proper radius:……………………..................... 3

END SEAL MATERIALS FOR CHAMBER COATING SYSTEMS: ............................... 4
Foam seals: .................................................................................................................................. 4

Plastic seals: ............................................................................................................................... 4
Pre-soaked felt: ......................................................................................................................... 4

Problem areas that are over looked: ............................................................................ 7
PRE-CUT TO LENGTH DOCTOR BLADES:........................................................................ 10

SETTING UP OF THE CHAMBER BLADE UNIT: ............................................................ 10
IMPORTANT POINTS TO REMEMBER: ............................................................................. 11

When ordering your flexo end seals, make sure they are made of a
material that is compatible with the type of ink or coating being
used, the length of the run, and the press speed. ......................................... 11

A number of new flexo end seals have coatings and multiple material
combinations (two part and three part) are on the market today. ..... 11
It is important to know that not all felts are created equal. ................... 11

Foam end seals are still a very popular and cost effective solution. .. 12
Flexo end seal materials are available with different durometers or
compression ratios. .......................................................................................................... 12
Good seal design for a proper fit is critical to minimize chamber
leaking from gaps. ............................................................................................................. 12

The condition of the anilox roll can also play a role in chamber leaks.
...................................................................................................................................................... 12
Doctor blades that are too short or too long can be another source of
leaks. ......................................................................................................................................... 13

Many new chambers come with special moulded rubber seals. ............ 13

CHAMBER BLADE END SEALS TRAINING MANUAL 1
Updated - 24 June 2019