Pad Print Machine

HAUG ionizing systems in pad print machines can produce better quality images

 

HAUG ionizing systems in pad print machines




The most frequent problems with electrostatic charges in pad print machines and their solutions:

Problem Cause Solution Ionizing system
Dust or particles are shown in the print Dust or particles cling to the surface of the product to be printed and/or on the tampon caused by electrostatic charges. Blow on the product to be printed and the tampon with ionized air just before and after the printing.
The tampon must be consistently surrounded by ionized compressed air.
Blow in the distance between tampon and product to be printed.
2, 3, or 4 ring ionizers RI 32, 2 air gates LS PLE or Delta blower DA TR (see area B)
Fine paint splashes on the print High electrostatic charges caused by deformation on the tampon by touching the product to be printed. While the tampon is slackening fine paint threads are torn out of the paint film and diverted by electrostatic field strength powers. Blow ionized compressed air gently and consistently from all sides around the tampon and the product to be printed. 2, 3 or 4 ring ionizers RI 32, 2 air gates LS PLE or Delta blower DA TR (see area B)
Fine paint splashes on the tampon while taking paint from the printing block High electrostatic charges caused by deformation of the tampon by touching the product to be printed. While the tampon is slackening fine paint threads are torn out of the paint film and diverted by electrostatic field strength powers. Discharge tampon on its way to and from the printing bloc with an ionizing bar 1 ionizing bar EI PS, at right angles to the way the tampon moves, if the tampon is not lifted higher than 20–30 mm.

1 ionizing bar EI VS if the lifting distance is higher, due to its larger distribution area. (see area A)



General remarks:

The pad is charged electrostatically while deforming and therefore draws up dust and fine particles. As this is the main element of interference the tampon mus be air flown constantly while deforming or slackening.
Ionized compressed air must be blown in the distance between tampon and product to be printed. Both, the product to be printed and the pad will therefore be discharged at the same time. Only a maximum of 0.5–1.5 bar of compressed air is needed.
Caused by electrostatic charges the product to be printed often has already drawn up dust and fine particles which must be eliminated with a powerful compressed air blow (approx. 4–4.5 bar) before the tampon contacts the product.
As the paint would dry too fast it is recommended not to blow directly on the printing bloc.
Only at a certain electrostatic charge paint splashes can be seen on the tampon while taking paint from the printing bloc. As electrostatic charges are build up gradually with each step of printing they can be controlled with the tampon passing a with ions enriched field either way. (see ill. area A).
Due to financial aspects it is recommended to control the compressed air flow via a magnetic valve or pedal switch.
With divergent tampon sizes or forms the device configuration is complied with individual installation.



Recommended ionizing systems for different tampon sizes:

Tampon
size/form
Area Ionizing system Mounting device Power pack
Diameter up to 100 mm, 
round or oval or up to 
100 x 100 mm, angular
A 1 pc. EI PS axial with 2 m HV-cable 2 fixing screws M4 x 18 in T-groove of the bar (enclosed) Distance tampon / ionizing bar min. 20 mm, max. 50 mm Areas A and B: 1 pc. EN 8 LC (4 HV-connections with electronic function monitoring)
B 2 pcs. RI 32 with 2 m HV-cable each 2 pcs. RI-holders 10.7207.000 (threaded rod, length 150 mm with long-hole angle and adjustable holds ring) or 2 pcs. RI-holder 10.7202.000 (flexible holder with adjustable holds ring, fixing clamp) Areas A or B: 1 pc. EN SL LC (2 HV-connections with electronic function monitoring)
Diameter up to 200 mm, round or oval or up to 200 x 200 mm, angular A 1 pc. EI VS Length 30 cm with 2 m HV-cable 2 pcs. bar holders 10.0268.000 2 pcs. long-hole angle X-0404 Area A: 1 pc. EN SL LC (2 HV-connections with electronic function monitoring)
B 3 pcs. RI 32 
with 2 m HV-cable each
3 pcs. RI-holders
10.7207.000
(threaded rod, 
length 150 mm with
long-hole angle and
adjustable holds ring)
or 3 pcs. RI-holder
10.7202.000
(flexible holder with
adjustable holds ring,
fixing clamp)
Areas A and B: 
1 pc. EN 8 LC
(4 HV-connections with electronic
function monitoring)
or 
2 pcs. DA TR
on integrated
threaded bolt
M6 x 22
Diameter more
than 200 mm,
round or oval
A 1 pc. EI VS 
lenght 50 cm 
with 2 m HV-cable
2 pcs. bar holders
10.70268.000 
2 pcs. long-hole
angle X-0404
Areas A and B using 1 x EI VS und 4 RI:
1 pc. EN 70 LC 
(4 HV-connections with electronic
function monitoring)
B 4 pcs. RI 32 with 3 m HV-cable each 4 pcs. RI-holders 10.7207.000 (threaded rod, length 150 mm with long-hole angle and adjustable holds ring) or 4 pcs. RI-holder 10.7202.000 (flexible holder with adjustable holds ring, fixing clamp) Otherwise for areas A and B: 1 pc. EN 8 LC (4 HV-connections with electronic function monitoring)
or 3 pcs. DA TR on integrated threaded bolt M6 x 22
More than 200 x 200 mm, angular. Up to a max length of 500 mm one side A 1 pc. EI VS length 60 cm with 2 m HV-cable 2 pcs. bar holders 10.0268.000 2 pcs. long-hole angle X-0404 Areas A and B: 1 pc. EN 70 LC (4 HV-connections with electronic function monitoring
B 2 pcs. LS PLE length 50 cm with 3 m HV-cable each 2 pcs. screws M4 x 15 each in T-groove of the LS PLE (enclosed) Area B: 1 pc. EN 8 LC (4 HV-connections with electronic function monitoring

Subject to technical changes!