Thermonex® Clearbond 201-02A

• Suitable for back lit applications in illuminated interior trim parts
• High initial bond strength
• Very good heat and hydrolysis resistance
• Translucent dry film
• UV stable

This product is very well suited for manual, press and vacuum lamination for the manufacturing of all kind of interior trim parts.

• PVC-foils, TPO-foils, genuine leather, artificial leather, carpet or textiles to core substrates such as ABS, PC, PCABS, SMC, pre-treated olefins, polyester, some metallic substrates and wood fiber based materials.
• For the bonding of genuine leather, artificial leather and spacer fabrics a double side adhesive application on the laminate and on the carrier is necessary to achieve the maximum bonding performance.
• For foil applications, a single side adhesive application on the carrier is sufficient

Surface preparation:

• Surfaces must be clean, free from dust, fatty substances and release agents.
• The surface tension of the substrates which shall be bonded should be higher than 40 mN/m.
• Recommended working temperature: between +15°C and +25°C.

Mixing ratio:

• Component A = 100 parts by weight
• Component B = 5,5 parts by weight
• Component B must be added homogeneously and without foaming during agitation using a mechanical mixing equipment into component A.

Processing time / pot life:

• To be processed within 8 hours at 20°C material temperature after adding the hardener (pot life).
• Higher temperatures decrease the pot life, i.e.
• 4 hours at 30°C. After the adhesive is applied on the different substrates and dried according to our recommendations the open time of the adhesive is 4- 8h depending on the ambient conditions and on the activation parameters.

Application - Equipment:

• Equipment, containers, hoses, etc. which come into contact with thermonex™ must be of corrosion resistant material (i.e. stainless steel 1.4541 or 1.4571 or plastic) to avoid coagulation.
• Any contact with nonferrous metals (like hoses, sealing rings, filter bodies, etc.) must be avoided in any case.
• The adhesive can be applied by spraying out of a pressure pot or with automated mixing systems.
• The use of HVLP spray guns minimizes overspray. Also roller coating is possible as an application system.
• All thermonex™ hardener (B component) react with water to carbon dioxide and insoluble urea.
• Therefore all containers must be always kept tightly sealed.
• Penetration of water in any form must be avoided (like moist air, moist containers).
• Formation of carbon dioxide can result in dangerous increase of pressure.

Drying temperature:

• Recommended maximum drying temperature is 45°C in a ventilated oven for approx. 10 - 20 minutes (depending on the part size and coating weight).
• Drying with dry air (< 10% rel. humidity) leads to a faster and very gentle drying process.
• During the drying process, the humidity in the drying channel increases strongly.
• The excessive moisture content must be reduced either by fresh air supply or by drying out physically.
• The adhesive film must be completely dry before lamination (recommended remaining humidity <10%).

Caution:

• The drying time is influenced by the absorbency of the surface, drying temperature, coating weight, air humidity etc. and needs to be checked under real life conditions.

Bonding:

• The recommended minimum activation temperature in the bond line is 55°C.
• This 2-component adhesive system attains its final adhesive properties, e.g. heat resistance, final strength etc. after 5 days after bonding.

• Liquid adhesive should be cleaned immediately after end of shift using water.
• For automated spraying systems special cleaners are available for the cleaning of the hardener pipe system.

Caution:

• Do not add any solvents to the adhesive and do not use hot water for cleaning.
• Dry adhesive residue must be either removed mechanically or with the appropriate solvent.

• Thermonex® Clearbond 201-02A should be used within the shelf life specified on the packaging.
• The storage stability applies to material stored under appropriate conditions only (original unopened containers, recommended storage temperature).