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Science Forum Index » Nanotechnology Forum » Optical nano micro porovision system at fast running fabrics
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| bernado |
 Posted: Fri Jan 04, 2008 1:18 am |
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Guest
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Online porosity permeability control - patent pending
Porosity control of nano or micro porous and/or perforated web
material, with laser or electrostatic perforation systems, which are
produced in speed ranges up to 600 m/min and web widths up to 2000 mm
are difficult to control with pneumatic systems because that methods
includes disadvantages such as web tangency, web toughing, material
flaking, folds build-up, dust and dirt flowing in the system.
These difficulties are ideally solved with stationary/scanning optical
porosity control systems as OPSS-1, OPSS-1-A/B, OPRL-1 A/B which are
patent pending by DE10251610.
Air or gas permeability or porosity ranges from 50 up to 5,000 C.U.
(ml/sqcm/min) respectively 3 to 100 l/sqm/sec. Franksystem by web
widths from 100 to 2000 mm at speeds of up to 500 m/min are now
possible.
Working principle
The online quality control technique is performed to detect and scan
zones, generated nano micro pore areas or lines in using multiple
colour sensors and a precise tiny line laser which are linked to
sensor internal controller units. It controls roll or bobbin formats
as stand-along or mechanical coupled devices on existent scanning
units which measure material weight, thickness, formation, smoothness,
roughness, opacity, etc. in web widths up to 6000 mm.
For lasers or electrostatic perforation in bobbins and wide paper webs
online measuring procedure and their devices are indicated, with which
same transverse movement and simultaneously collections of perforation
positions, perforation profile quality and porosities with two
different sensor systems and locations. Zone or line position
detection by accuracy of 0.1 mm with a laser line unit, scanning
speeds up to 300 mm/s, DSP controller firmware, high-speed serial link
up to 230.400 bit/s, industry PC performance, C++ process/
visualisation software for production quantity, quality, statistics,
LAN to quality control centre, etc.
With transverse movements of both measuring systems across the web
width, consisting of line laser to detect the quality and position of
single nano, sub micro or macro holes in ranges of 10 nm up to 200 um
diameter, groups of holes or determined perforation zones and
simultaneously light transmission sensor unit monitors the porosity
profiles and determined their integrals continuously.
Thus direct feedbacks to the perforation or machine system enable the
trend compensation of arising changes that production rolls without
intermediate stops are high quality and quantity controllable.
Applications
Jumbo roll-by roll production for offline micro laser or electro
static perforation machines for web widths from 100 mm up to 2000 mm,
porosity ranges from 80 C.U. up to 5,000 C.U. with feed backs to each
perforation channel and automatic production control. The OPSS-1
system enables a production networking for laser or electrostatic
perforation machines in quality and quantity aspects in order of ISO
certifications.
As well for porous, filter, permeable paper, packaging, sack, fabrics
or other webs at making, finishing, refining or other industry
machines or processes.
New ranges of applications will be made accessible as new products
with special features will be developed.
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IPM - International Perforation Management
High-tech engineering - China - Germany - Thailand
http://www.microperforation.com
http://www.microperforation.com.cn
http://www.deguodaguan.com/ipm/
http://www.dk3qv.de
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http://www.microperforation.com/mll-1-laser-perforation.html
http://www.microperforation.com/lpm-1.html
http://www.microperforation.com/opss-1-optical-online-porosity.html
http://www.microperforation.com/igbt-esp-unit.html
http://www.microperforation.com/online-perforation-cigarette.html
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