WINDSCREEN bonding

WINDSCREE

Direct bonding – Proven technology for the future

Windscreen bonding with polyurethane adhesives began its’

successful reign in automobile manufacturing more than 30 years

ago. At the time this represented the first major technical breakthrough in

bonding technology. The significance of bonded glass for the

dependability and safety of vehicles is a generally acknowledged fact

and no new car is built today without direct glazing.

The requirements on windscreen bonding systems have increased

steadily. While in the beginning the emphasis was placed on reliable

tightness and retention of the windscreen in crash situations, in later

stages progress made in the field of car body engineering applied to

windscreen bonding as well.

Würth is working intensively towards further advances in this

technology, such as the omission of black glass primer,

independent to climate 1-component adhesive and other chemical

reaction mechanisms, particularly in view of weathering, thermal and

moisture stability, so that they will continue to be the dominating material

of choice foreseeable future.

EN bonding

Preparation

Getting the right preparation

for a job is vital. With the

right preparation in place jobs will

be efficient and there will be no

time wasted looking for required

tools and materials. Würth provides

all the required preparation tools

from health and safety equipment

such as pimple palm knitted gloves

(0899 400 020) and goggles

(0899 100 0) to windscreen tools

such as suction handles (0714 58 28).

Making sure the car is also

prepared is another key factor,

placing protective covers over seats,

dashboard and hood of the vehicle

makes sure that every preparation

needed is taken care of.

0899 400 …

0899 400 210

0715 58 01

0899 500 …

0899 102 240

0899 102 110

WINDSCREE

Separation and removal

Removing of the trims and seals

can be achieved by different

means. Everyone has there

preferred and desired method,

which the simple final result is for a

quick and efficient separation.

Powerful electric (0702 697 1) and

pneumatic (0703 861 1) cutters

use an oscillating motion. Whilst

other tools such as removal knives

or cutting wire could be the more

simple method. When cutting out

windscreens it is vital that goggles

and gloves are worn.

0703 861 1

0714 582 10

EN bonding

0696 605

New windscreen

With all new windscreens prior

to cleaning them down,

checking windscreen for proper fit

and marking positions with adhesive

tape is essential. Würth provides the

perfect tools for this job. With

designated suction handles related to

the size of the windscreen, windscreen

stands (0714 58 262) and active

glass cleaner (0890 024 1), checking

new glass for defects or damage is

easily noticed.

WINDSCREE

1985 312 0

0890 25

1899 509

1893 501 008

1893 501 009

0890 024 1

0714 58 262

Windscreen Preparation

Preparing the windscreen to be

primed and installing of trims

or rubber seals has to be done

efficiently otherwise will lead to a

ruining of the job. The PU pre-

coating, PVC or PU-RIM moulding

must be pre-treated with activator

PU/PVC (0890 024 3). Cutting back

the residual adhesive bead can be

made easy using a Wurth Multi

cutter and scraper. The formed

bead then provides and ideal

surface for the new glass adhesive.

EN bonding

0702 697 1

0714 663 31

Windscreen Adhesive

The Würth windscreen adhesive

product range consists of two

types of polyurethane adhesives for

windscreen bonding.

1-Component (1K) is easy to

handle with no special processing

tools and cures depending on

humidity and temperature at

certain speed from outside to core

2-Component (2K) This cures

chemically throughout the adhesive

bead and is independent of

humidity and temperature which

gives a guaranteed drive away time

Ultimate is the newest technology

in direct windscreen bonding it is

a 1K component adhesive but

unlike the other 1K component

adhesives it is independent to the

climate. The high modulus and non-

conductive properties make it to be

suitable for any job, with the 1hour

guaranteed drive away time with

airbag at an ambient temperature

from -10°C to 30°C, it makes

Ultimate adhesive the most

effective on the market.

WINDSCREE

0890 023 1

0890 021 1

0890 023 800

Glass repair starter set

Stone damage of compound

glass windscreen can be

repaired economically within the

shortest possible time with the aid

of wurth windscreen repair

products. (Provided the stone

damage is not within the immediate

field of vision of the driver or near

the edge of the glass) The repair

effectively prevents the

propagation of cracks, maintaining

the full stability of the glass. In

order to promote this, in

comparison to replacement of the

windscreen, more economical

system, many insurance companies

assume the full costs of the repair.

EN bonding0893 458 0

Conditions for repairs of compoundglass windscreen

1. Only damage to the outer surface

of the glass may be repaired. The

inner surface and the plastic film

may not show any damage.

2. The repair must be carried out as

soon as possible after the damage.

No visible moisture or dirt is

allowed to penetrate the crack.

3. The diameter of the crater at

the point of impact may not be

greater than 5mm.

4. Any cracks propagating from the

point of impact may not be longer

than 50mm and they may not

extend to the edge of the glass.

In cars, a driver’s field of vision is considered tobe a 29cm wide vertical strip centred on thesteering wheel, the upper and lower limits beingthe edges of the windscreen wiper area.

In case of trucks the driver’s field of vision isformed by a square with a side length of 29cm,with the driver’s seat in the centre position.

impact points located in

the driver’s field of vision

may not be repaired

Windscreen accessories

Windscreen bonding has many

accessories that all add

different techniques to doing the

job whichever way is easier for

you. Würth’s unique range of

accessories enables the user to

use old or new methods whilst

maintaining a high standard when

doing your job operation.

We continue to be at the

forefront of the market

making sure our products fulfil our

customers needs. Our wide range

of accessories varies from health

and safety, separation of bonding

tools and windscreen preparation

tools. Each product is easy and

comfortable to use to maintain

ultimate control.

For more information please

contact your sales consultant

WINDSCREE

EN bonding

for optimal adhesion of the

adhesive to the body flange

• Do not apply primer to the

residual bead.

• For safety reasons, activate the

residual bead by applying

Activator PU/PVC.

• In case of newly painted vehicles,

apply primer to the body flange.

• In case of windscreen bonded

with butyl or MS polymer

adhesive any residue must be

removed completely.

for a "tight" windscreen

• The vehicle may not be placed on

a hoist (due to the danger of

distortion).

• Observe the correct application

thickness of the adhesive to

guarantee sufficient contact

between the surfaces to be

joined.

• Execute the butt joint with due

accuracy (beginning and end of

adhesive bead).

• Install the windscreen within the

processing time of the adhesive,

since proper adhesion to the

surface is no longer possible

after skin formation.

• Do not re-adjust the windscreen

after setting it in place.

• Make sure that drive-away times

are complied with!

for optimal curing of the

adhesives

• Do not use thinners, brake

cleaner or cleaners containing

alcohol for windscreen bonding.

Do not store open containers with

these products in the immediate

vicinity during the curing time.

• Insure the humidity level and

temperature is not too low when

processing

1K adhesives (ideal: 23°C/50%

relative humidity).

• When using 2K adhesive, make

sure you do not inadvertently use

the A or B comp. twice in a

double cartridge.

for optimal adhesion of the

adhesive to the windscreen

• Always use Active Cleaner for

preliminary cleaning of the glass

Insure you dry the glass

thoroughly after cleaning.

• Do not treat pre-primed

windscreen with Activator

PU/PVC, just apply primer.

• Shake primer well prior to use.

• Adhere to drying times of primer

(15 minutes) or Activator PU/PVC

(at least 5 minutes). Do not apply

adhesive before!

Top tipsCleanness and precision are indispensable when

bonding windscreens.

Always check the expiry date of windscreen adhesives

(dates are indicated on the cartridges and sachets).

Würth UK Limited

1 Centurion Way

Erith, Kent

DA18 4AE

Tel. 08705 987 841Fax. 08705 987 842www.wurth.co.uk

© Würth UK Ltd. All rights reserved in all media.

No part of this catalogue may be reproduced in any form, copied or stored electronically,

whole or in part without prior written permission. Every effort has been made to verify all

information. Products may vary in appearance from those pictured.

The information expressed is intended as a recommendation only, based on our tests and

experience. However, we cannot accept any responsibility for results in individual cases because

of the wide variety of applications as well as storage and processing conditions beyond our

control. This also applies when making use of our technical and commercial customer service

which is supplied free of charge and without obligation. We always recommend that you carry

out individual tests. We guarantee the consistent quality of our products. Subject to technical

changes and developments.

Würth UK Limited cannot accept responsibility for any errors or omissions or for any losses that

may arise as a result.

Contact Würth

We operate a team of regional sales consultants

covering from the north of Scotland down to the tip of

Cornwall. All of our consultants are fully trained to give

you the best advice and service in your field. We also

have product specialists who can help with queries on

any associated products.

To find out more about the product range, please either

contact your local sales consultant or Würth’s customer

service centre on 08705 987 841 and they will be happy

to answer any questions directly.

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