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Science Forum Index » Electronics - Misc Forum » nana micro laser electrostatic perforation, optical permeabi
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| bernado |
 Posted: Fri Feb 02, 2007 10:12 pm |
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IPM - International Perforation Management - Germany
Mr. Werner Grosse
fax : 0049 - (0) 1212-5-375-17-531
http://www.microperforation.com
http://www.microperforation.com.cn
http://www.deguodaguan.com/ipm/
http://www.dk3qv.de
patent downloads : http://www.microperforation.com/
englishengineerreport.html
main link : http://www.microperforation.com/ipm-
technology.html
perfection in nano, sub-micro, micro, macro perforation
optical online porosity and dyne - surface tension - control at
material webs
For more information - please visit our website
LPM-1 OFF-LINE laser perforation systems and machines for wide-web
paper or other material sheets
German Patent : DE 10.2004.001.327.6
Principle of wide web laser perforation
For laser perforation of wide web material sheets procedures and
devices are indicated which allows now up to 2000 mm wide-web material
sheets, up to 200 single laser rows and hole sequences to 2,000,000
per second.
A new high power Laser multiplexer for wave lengths of 500 nm up to
10.6 µm allows by four main beam inputs up to 200 single beam outputs,
up to 6 laser rows on one bobbin, automatic laser line positioning and
setting, by two 2/4 KW Laser sources, web speeds up to 300 m/min, web
widths up to 1000 mm, 24.500 meter roll-by-roll and fully automatic
production, up to 20 bobbins in one cut which means up to 160 bobbins
without any machine stops including the OPSS-1 porosity scanning and
feed-back control system.
Working principle of the high power laser multiplexer
With the employment of CO2 hollow waveguide fibres, a rotary cubic
element or two quadruple beam splitters or a polygons bent facets, an
optical and high power laser multiplexer trained in the complete
circle are industrial suited realizable up to 200 optical single
channels. Between the laser perforation section and rewind stand is
the optical online porosity control system OPSS-1 positioned which
controlled the out coming laser line perforated material web.
Applications
Highly automated and motor adjustable focusing optics one each
perforation heads are position able across the material webs. That
automatic procedure and their devices open now fully new ways in wide
web laser perforations up to 400 m/min web speeds and a very high
number of optical single channels.
In addition with the optical online porosity control systems OPSS-1
the porosity, hole qualities and all hole row positions are
continuously controlled and to be compensated over direct feedbacks
into the perforation system. That complete production rolls are
perforate able without intermediate stops in high qualities and large
quantities.
Many other application fields opening the new high power laser
multiplexer as for cutting, welding, surface furnishing, drilling etc.
Summary
With CO2 hollow waveguide fibres, a rotary cubic element or two
quadruple beam splitters or a polygons bent facets, an optical and
high power laser multiplexer are industrial suited realizable up to
200 optical single channels in optical output ranges up to 40 Watt on
each optical channel.
JUMBO-ROLL production for off-line LASER perforation machines up to
200 single perforation rows, automatic laser line positioning and
setting, web speeds up to 300 m/min, web widths up to 1000 mm, 20
bobbin per cut, 24.500 meter roll-by-roll and fully automatic
production including the OPSS-1 porosity scanning and feedback control
system. Non-stop roll-by-roll wide-web LASER perforation technology
for several material webs as like paper, packaging, coated and many
other laser perforate able material sheets
MLL-1 - Micro-Laser-Line Perforation ON-LINE/OFF-LINE - Patent pending
DE 10.2004.012.081.1
Base description
As known OFF-LINE laser perforation machines and processes generating
strait hole lines in web direction of the running tipping or other
material sheets. Excluding spray laser designs which looks similar as
random holes into certain zone areas as electro static perforation.
The world-wide new Micro-Laser-Line perforation technology generating
SINUS, WAVES or ZIG-ZAG or other kind of perforation hole lines in web
direction which looks as a package of micro laser lines.
Concerned tipping paper it means around the cigarette filter.
New divert elements moving each single laser beam in across direction
which are strait focused to the running paper or other material webs
or sheets.
Product and process advantages
* the micro-laser-line perforation is total different against ALL
other laser perforation processes
* it allows a own product property/trademark - patent claims
* a MLLl-1 perforation design indicates a tipping paper
perforation process and supplier company
* wider position ranges of laser perforation line groups as common
ventilation zone obtains a advance air stream distributions into
cigarette filters
* a full perforation line guiding around the cigarette filter
assure constant porosity results
* several wave line designs for different brands are possible
* number of holes per cm are constant e.g. 10 or 20
* porosity ranges from 100 up to 2000 C.U. are possible
* from 1 up 6 into perforation lines combines one group
* perforation hole qualities and porosities remaining in standard
ranges
* other materials and products are perforate or treatable in
similar processes
Existent and new laser perforation machines/systems
* existent laser perforation machines are able to modified with
new optical, mechanical and control elements of beam diverts
* the investment of technical modifications are in low budgets
because exchanges of certain elements
* the complete MLL-1 device is adaptable on existent off-line
laser perforation machines or other systems
* possibilities to adapt the MLL-1 beam divert unit at online
perforation systems at cigarette making machines
* perforation power and production outputs remains as before
Applications
For the micro laser line perforation MLL-1 of web or sheet materials
as like any kind of paper, metal, isolation, plastic materials allows
now a large degrees of hole positioning freedom by different
perforation designs in the form of wave, zigzag lines or other forms
which generating e.g. in cigarette filter optimized air distribution
characteristics.
The special remarks of the micro laser line perforation create
fundamentally new product properties, e.g. as final products for
mouthpieces with tipping paper on cigarette filters or other products
of this kind which completely specific a brand name and is
recognizable for everyone - if the holes are visible or to see with
magnified glasses. Just as like a perforation cryptogram.
Technologically this is performed by means of Piezo oscillators for
laser beam deflections, as actuators with added metal optics or
asymmetrically, rotary reflection cones, whose function and temporal
operational sequences are coupled with the path speed of web
material.
The points of envelope curves of the selected perforation form are
calculated and computed before for the single holes and hole groups
implemented and supervised during current perforation procedure by
programmable control system.
Summary
MLL-1 micro laser line processes allows many applications with certain
beam diverts in horizontal or vertical positions. Using of new beam
diverts elements allows easy and low budget modifications on existent
laser systems.
ESP IGBT dual high-power high frequency switching units - patent DE
103.28.937.2
applications for ESP perforation, corona treatment or others
porosity ranges from 80 C.U. - 2500 C.U.
paper web speeds up to 450 m/min and web wide up to 1200 mm
Electrical condition
For electrostatic nano or micro perforation of running materials as
fine paper, tipping, cigarette, packaging or other substrates a new
high speed/power circuits is designed which consists of dual HV fast
switching IGBT´s, MOSFET`s or HVFET´s. The circuit works itself with
alternating clock frequencies and changing of pulse widths a common
load condenser and coupled primary inductance of a ferrite high
voltage transformer as upward power/pulse converter and non resonance
frequency operation.
Circuit advantages
A controlled pulse timing into a certain time window with a constant
or variable frequency generates hole sizes and hole sequences with
high voltage sparking through the material webs. The repeating
frequencies of the entire circuit can up to the double switching
frequency of each semiconductor.
A changeable current in the spark channel are feasible with total
switching frequencies up to 150 kHz.
In the same time the dual semiconductor switching unit allows a double
power level as just only with one unit.
Application fields
Micro Perforation
Perforation results are now achieve for nano, sub and micro
perforation of flexible webs with ultra small pores and products made
of these materials. Materials finishing are of interest for numerous
tasks in the field of packaging, in filling, non woven industry, for
technical and science applications, etc. For many years fine and other
paper webs with base weights between 20 up to 150 g/sqm have been
perforated electro statically in large areas or zone designs. Pore
sizes from 1 to 100 microns and pore distributions of up to 4 Million/
sqm in area perforation or respectively 2OO/sqcm by zone perforation
can be reached. Air permeabilities or porosity ranges are among from
50 up to 2,500 C.U. (ml/sqcm/min) respectively 3 to 50 l/sqm/sec.
(Franksystem ) are now possible.
Other switching application fields
The new dual semiconductor allows applications to build hybrid drives,
semiconductor high-level stage, upward, downward or other converters
or generators which operating with supporting capacitors, high-voltage
ferrite transformers in an extremely compact and modular way.
Several advantages are the high efficiency of pulse/power transmission
and energy ratios.
Traditional corona or other type of medium frequency generators up to
30 KHz operation ranges are easy to modify for a double frequency and
power levels.
Optical online OPSS-1 porosity scanning systems - patent pending DE
102.51.610.3
for ESP and LASER perforation machines and other paper applications
from 300 mm up to 1600 mm web widths
porosity - permeability ranges from 80 C.U. up to 5000 C.U.
full ESP perforation feedback of each perforation channel
Operation principle of optical porosity control
Porosity control of 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 overcome with stationary, optical
porosity measurement systems.
Porosity ranges are between 80 C.U. up to 5,000 C.U.
Applications of OPSS-1 porosity scanner systems
The production technique is performed for scanning zone area
measurements in using multiple sensors as precise line laser and
colour sensors and internal controller units. It controls roll
material or bobbin formats, stand-along or mechanical coupled with
existent scanning units which measure the material weight, thickness,
formation, etc.
For lasers and 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 and porosities with two different sensor systems
and locations.
With transverse movements of both measuring systems over the web
width, consisting of line lasers to detect the quality and position of
single holes, groups of holes or determined perforation zones and in
the same time the light transmission sensor unit monitors the porosity
profiles and determined the integrals continuously.
Thus direct feedbacks into the perforation system enable the
compensation of arising changes so that production rolls without
intermediate stops are producing and controllable.
Summary
The optical online permeability and porosity control system OPSS-1
works with two different sensors as like precise line laser, colour
sensors and internal controller units for a real time positioning and
porosity control while scanning across the running webs.
JUMBO-ROLL-BY-ROLL production for off-line micro LASER or
ELECTROSTATIC perforation machines for web widths of 300 mm up to 1600
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 whole
OPSS-1 system enable a production networking for laser or
electrostatic perforation machines in quality and quantity aspects and
in order of ISO certifications.
Optical dyne and surface tension control at running plastic films or
other substrates
patent download : http://www.microperforation.com/
englishengineerreport.html
The former patent application DE 195.42.289 A1 concerns a method and
device for optical dynamic, i.e. a non-contact, in-line surface-
tension / surface-energy measurement for running substrates whereby
the detection can be in the transverse-direction or in the running-
direction of the web.
In the context of this invention, running substrates or moved web
material is to be especially understood as being plastic films like
PE, PP, LDPE, HDPE, LLDPE, EVOH, PTFE, PET, PS, PMMA, PBMA, PVC, PA
and also laminated or coated film or paper webs which still show a
measurable optical transmission in the wavelength range of 1200 to
2200 nm.
A higher material wetting capacity, respectively, a higher material
adhesion capacity, which can be achieved by increasing the surface
tension, is demanded in many application cases for better
printability, coatability or adherence capacity during the
manufacture, finishing, printing and processing of running substrate
webs.
Described is a method and device for optical dynamic in-line surface-
tension measurement in ranges from 30 dyne up to 60 dyne in which a
substrate web running vertically through a measuring gap is subjected
to a chromatic light transmission from two optical channels displaced
by 90° to each other. This light transmission is detectable by two
optical detection systems located on the other side of the web.
Material specific wavelength selection, light transmission angle
changes, polarisation slot diaphragms and transverse displacements of
the light beam feeder along the optical X-axis result in extreme
scattering and diffraction of the IR light photons in the boundary
layer area on both sides of the sub-nano layer within the substrate
web. Their transmitted light intensity enables, after detection and
evaluation, the determination of a direct relationship to the absolute
surface tension.
And this entirely independent of the material-specific influences
like: material and surface consistency, crystallinity, thickness,
density, structure, polar grouping, temperature and type of pre-
treatment.
Introduction
Non-contact, realtime and in-line operation surface-tension or surface-
energy dyne - measuring systems for running webs as like plastic films
in general, coatings, laminates etc. does not exist world-wide. Due to
the broad application field of surface-treated or surface-non-treated
webs of plastic film, non-woven fabric, laminates or coated paper,
there is unimaginable market potential here in respect of the in-line
process measuring of the surface tension - dyne - and an in-line
control of the dyne treatment level and moderate quality control.
Various companies from the abroad are serious interested in project co-
operation, system development, prototype making and testing,
manufacturing and world-wide sales, system purchasing and licensing in
respect of the ODSTM-1 Process Measuring System.
Actual projects situation of the ODSTM-1 development project
Further information concerning publications, patents and engineering
reports are specified in the above mentioned applications. Several
spectral measurements as well the feasibility study with well known
optical institutes are positive done. Furthermore some significant
modifications and breakthrough of the base ODSTM-1 measuring process
with the using of state-of-the-art monolithic spectrometers and PC
support. Specific information about the actual development and project
status of the ODSTM-1 system on request.
Concerning the actual ODSTM-1 development and project status - after a
certain developments :
with known optical institute are large numbers of specific
measurements with a monolithic spectrometer in a wave range between
1200 - 1600 nm positive done
all measurements where based on the detection principle which is
described in the former patent application.
used are non-treated LDPE films in 70 and 90 µm thicknesses and 28 mN/
m
the comparison is used the same LDPE films with one side corona
treated with 38, 48, 52 and 60 mN/m
their test results where positive with a good prospect to going
further in that way
Comment from an optical expert in Germany :
Has already after the first investigations in his letter from that
7.3. in the both lower distributions of the first page and the upper
on the second page on these measurable differences advising. I have
ascertained my earlier measurements and the completions in the patent
application. In the earlier transmission measuring, under application
of IR-filters and the optic axis movements, these value differences
measuring technologies, what were working out for the patent
application and further measurement results. These measuring
difference and their hints of surface tension are explained in page 8
of the top written patent application. Base on the earlier
measurements and present results with the spectral photometer leave
them-selves after my opinion the differences of surface under the
given demands of the material independence - see patent documents -
and certain measuring conditions.
Base data of Opto-Dynamic Surface-Tension Measuring system ODSTM-1 :
· web widths : up to 6000 mm
· web speeds : up to 600 m/min
· substrates : PE, PP, HDPE, LDPE, PET, EVA, BOPP, etc.
· surface-tension measuring range : 30 - 55 mNm
· resolution, respectively, reproduction : +/- 0.5 mNm
· single-sided or double-sided measurement of the treated or untreated
sides of the film
· IR wavelength range : 1200 nm - 1800 nm
· mode of operation : dual scattered-light/multiple-sensor system with
variable wavelengths in transmission mode
· measuring method : similar to ellipsometry
· measuring gap : approx. 5 - 20 mm
· stationary and/or web-traversing measuring head
· optical fibre waveguide feed to measuring head system
· spatially remote, highly-stable IR light source with beam processing
· wavelength variation via a monolithic optical converter
· industrial PC, multiple-processor system, data recording, data
analysis, product documentation, statistics, etc.
· actual-value output : analogue 0 - 10 V via optical fibre or serial
RS 232, etc.
CONCLUSION
Described is a method and device for opto-dynamic in-line surface-
tension measurement in which a substrate web running vertically
through a measuring gap is subjected to a chromatic light transmission
from two opto-channels displaced by 90° to each other. This light
transmission is detectable by two optical detection systems located on
the other side of the web.
Material-specific wavelength selection, light transmission angle
changes, polarisation slot diaphragms and transverse displacements of
the light beam feeder along the optical X-axis result in extreme
scattering and diffraction of the IR light photons in the boundary
layer area on both sides of the sub-nano layer within the substrate
web. Their transmitted light intensity enables, after detection and
evaluation, the determination of a direct relationship to the absolute
surface tension.
And this entirely independent of the material-specific influences
like: material and surface consistency, crystallinity, thickness,
density, structure, polar grouping, temperature and type of pre-
treatment. |
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