Fully automatic lines for chemical strengthening of glass

Fully automatic lines for

chemical strengthening of glass

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Source: Tesla

Source: Mercedes

Source: Tata

JSJ Jodeit, Jena 1991

(EFR, Glass activities) 2009

(IGM, Tube drawing) 2012

Glamaco, Coswig 2014

(founded in 1957)

JSJ Glass Technology 2018

(Shenyang), China

HISTORY of JSJ-Group

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Principle of chemical strengthening of glass:

Ion exchange in a salt bath at 380°C to 450°C

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gla

ss

salt

before after

Sodium

Oxygen

Silicon

Potassium

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100 80 60 20 20 0 40

TRACTION COMPRESSION Glass

surface

Glass

surface THERMAL TEMPERING

CHEMICAL TEMPERING

Energy

Joules

Glass

Thickness

(mm)

5 m

4 m

3 m

2 m

1 m

Drop ball

(225gr)

0 1 2 3 4 9 5 6 7 8 10

10

8

6

4

2

Characteristics

Values of CS by

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Double ring bending strength Strength

[Mpa]

Temperature [°C]

Cycle

tim

e [h]

Values of DOL by

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Layer thickness Layer

thickness [µm] C

ycle

tim

e [h]

Temperature [°C]

Applications

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• Display and cover glass

• Car interior

• Automotive glazing (light weight)

• High speed trains and cars

• Boats and Yachting

• Military applications

• Security glass and fire protection

doors

• Architectural glass

• Aircraft industry

• Table ware

• Optical glass

Advantage of

chemical strengthening

• High resistance against

mechanical impact

• High resistance against

scratches

• No optical distortion

• Tempering of thin glass possible

Technological process

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Glass preparation

Rack loading

Preheating

Ion exchange in a salt tank

Cooling

Washing

Drying

Unloading

Cross section

1. Rack:

carry the glass sheets

clip solution (patent-registered)

2. Preheating / Cooling

chamber:

electric heated oven with

forced air convection

3. Door:

covers the tank and the

chamber

4. Tank:

includes the heating for the

molten salt KNO3

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Tank

Preheating

chamber

Rack

Door

CHEMICAL STRENGTHENING OF GLASS

Our chemical strengthening lines

are noted for their

• functioning and robustness

• low energy consumption

• high degree of automation

• ease of operation

• low maintenance cost

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Fully automatic batch process

capable for single glass sheets and

small series of glass sheets

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Typical glass sheet size: up to 6m x 3.2m

Tanks are available in several design

sizes.

Layout: fully automatic lines for mass production in automotive glass

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Typical glass sheet size: up to 2.5m x 1.8m

Tanks are available in 3 design sizes.

Layout: full automatic lines for mass production

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Loading

of thin glass sheets

into the rack by robot

include tracking of

glass sheets

Layout: full automatic lines for mass production

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Loading

of thin glass sheets

into the rack by robot

include tracking of

glass sheets

Chemical

strengthening

Layout: full automatic lines for mass production

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Loading

of thin glass sheets

into the rack by robot

include tracking of

glass sheets

Chemical

strengthening

Washing and drying

Layout: full automatic lines for mass production

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Loading

of thin glass sheets

into the rack by robot

include tracking of

glass sheets

Chemical

strengthening

Washing and drying

Post-IOX

treatment

Layout: full automatic lines for mass production

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Loading / unloading

of thin glass sheets

into the rack by robot

include tracking of

glass sheets

Chemical

strengthening

Washing and drying

Post-IOX

treatment

Robot handling for thin glass application with vision system

Glass thickness: 0.5mm to 1.6mm

Glass size: up to 2200mm x 1600mm

Cycle time: approx. 30 sec/ pc.

Options: de-pairing of glass sheets after bending

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Special clip design

(patented)

Washing

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Shower tunnel Warm water Deionized water

Salt handling

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Salt filling Salt drainage valve

Forecast: Contiuous processing in salt bath

If the demand of automotive glass is increasing strongly then new concepts

are needed. We are ready to supply.

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Research and Development

• continuous processing in salt bath

• salt regeneration

• spray coating

new technology for mass production

• Test facilities for chemical strengthening

are available

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TECHNICAL CENTER in JSJ and GLAMACO

• Glass melting services

• Glass production on customer request

• Test facilities for chemical strengthening

• Tempering test facility

• Laser cutting test station LHC, LCC for table ware

• Laser supported bending

test facility

• Melting tests and raw material assessments

• Melting technology investigations

• Measurement of physical properties of glass melts

(el. conductivity, viscosity)

• Corrosion tests (refractory and electrode materials)

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Business Partner:

JSJ Jodeit GmbH

Am Nasstal 10

07751 Jena / Germany

Phone: +49 3641 6229-20

E-Mail: jodeit@jsj.de

Internet: www.jsj.de

GLAMACO

DRESDEN / COSWIG

GERMANY

Berlin

GLAMACO GmbH

Prasseweg 1

01640 Coswig / Germany

Phone: +49 3523 646-00

E-Mail: info@glamaco.com

Internet: www.glamaco.com

THANK YOU FOR YOUR ATTENTION.

See you at German Pavillion stand C43