Teknek“Just in Time” Cleaning

Improves yields in Converting

Human Hair

Clothing Fibre

Packaging Fibre's

Slitting Dust

Machinery debris, Bearings, Paint

Chips

Ink from printed stock.

Debris from metallizing

The Problem

Contaminants

Chemical Residue or outgassing

Viable Contamination ( Alive )

Non Viable Contamination

Type Of Contamination

The Risk factors

Number and size of particles

The rate of incidence of particles

The time a part is exposed after cleaning

None Viable Contamination

10

100

1,000

10,000

100,000

Part

icle

s/C

ub

ic f

t. e

qu

al

to o

r

gre

ate

r th

an

th

e s

tate

d s

ize

Particle Distribution curves Fig 1.

0.3 0.5 1.0 5 10 100

Particle size ( Microns )

Cleanroom

Maximum Number of Particles Maximum Number of Particles

0.5 micron and larger 5.0 micron and larger

per cu. ft per litre per cu. ft per litre

100 3.5 0 0

10000 350 6.5 2.3

100000 3500 700 25

Table 1

Table 2

Diameter of Particles Velocity of Settling

microns feet per minute

1 0.007

5 0.2

10 0.59

60 21.3

Settling Rates (Airborne Particles)

Cleanroom Classification

Particle Size

Wiping with Tack Rags

Wiping

STATIC BRUSH

Space due

to wearing

ROTARY BRUSH

Space due to wearing

Brush System

Vacuum System

Surrounding dirty air pulled in

Blowing System

Air System

Direction

of Web

Compressed Air and Vacuum System

Vacuum

Ultra Sonic Generators

Idle roller

Surrounding dirty air pulled in

Ultrasonic System

100 micron

Boundary Layer

Bernoulli effect

Daniel Bernoulli-18th century scientist who discovered :-

“as the velocity (speed)of a fluid increases its pressure

decreases”

Area of low pressureArea of low pressure

The Boundary Layer

Boundary Layer

Blue roller penetrates

Boundary Layer

d

No slip area

Solid Boundary

Air flow50/150mm

Free Air Stream

Air speed

Velocity

d

0

Idle Roller

Transfer Roller

Contact Cleaning

Blue roller penetrates

Boundary Layer

Blue roller penetrates

Boundary Layer

Idle Roller

Adhesive roll

Clean Surface presented

to the incoming Material

No repeater’s

Transfer of Contamination

Idle Roller

When full , one revolution

of the adhesive is removed

Adhesive removal

Direction of Web

Teknek Transfer Technology

Double Sided Cleaning

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

++++++++++++++++++++++++++++++++++

Static

elimination

Adhesive

roll

Cleaning

roller

Cleaning

method

Feature

Penetrate

Boundary Layer

Removal down to

1 micron

Analysis of

Contamination

Adapts to

Web Movement

Noisy

Large

Footprint

Ducting,

Filters

Simple

Installation

High

Maintenance Cost

Brush Ultra Sonic Contact RollerVacuumAir Blower

NO NO NONO YES

YES

YES

YES

YES

YESYESYESYES

YES

YESYESYESYES

YESYESYESYES

YESYESYES

NO NO NONO

NO NO NONO

NO NO NONO

NO

NO

NO

NO NO NONO

NO

v

Summary of Cleaning Techniques

100 75 50 30 25 10 5 1 0.5 0.2

Air Knife

Brush & Vac

High Velocity Vacuum

Ultrasonic

Contact Clean Machine

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Particle Size, Microns

Efficiency of Cleaning Methods

$

Cleaning efficiency's

Blown Extrusion with Slitting

Direction

of Film

Treatment &

Slitting Unit

Winding

Stations

Tower

Extruder

Reverse Roll Coating

Cleaning the Rubber

impression roller

Just in Time Cleaning Applications

Direct Slot Die system

Coating

Chill Rollers

Sequential Line for

Biaxially Oriented Films

( Plan View )

Direction of Web

XCH

Edge

Cleaning

XCH

Chill

Rollers Rewinder

Converting - Applications

Wide Web Converting - Product Range

XCH - Cleaning Head WWW - World’s Widest Web

Casting Film / Paper

( for reuse )

Coating Head

Applying Adhesive

Oven

Vinyl Coated

Casting Film

XCH Double Sided

XWCM

Transfer

Lamination

of Release

Liner

Finished Product

Direction

of web

XCH Double Sided

XWCM

XCH Double Sided

XWCM

XCH

XCH

Lamination Point

XCH

Direction

of web

Casting Film: Step 2

SLITTING

Coating & Lamination

Just in Time Cleaning Application’s

LAMINATING

Rewind

Slitting

Slitting

KnifesDirection of web

Converting - Applications

Wide Web Converting

XCH - Cleaning Head

XCH fitted to an unwind station

Slitting

Knifes

Rewinder Rewinder

Direction of web

Slitting

Web Treatment Centre

Unwind

Splice table

Edge trim and Centre slit

Contact Cleaning

Corona Treating

Rewind

Blister Packaging

Direction of Web

Laminating

Point

Filling

Improved Yields

Faster Production

Higher Quality

Less Rework

Analysis and cure of root problem

Insurance

No Filth

Conclusion

Why Clean Webs