The strength and durability of bonded joints depend on proper pre-treatment of the surfaces to be bonded. At the very least, joint surfaces should be cleaned with a good degreasing agent in order to remove all traces of dust, dirt, oil and grease.

Pre-treatment of thermoplastics materials such as PVC, polycarbonate, polypropylene, PMMA, etc., can be made using a mixture of light ethers or with isopropanol. Use of strong solvents is not recommended due to the risk of damage to the plastic surface.

Pre-treatment of other surfaces can be made using acetone or trichloroethylene, Petrol or other solvents should never be used. Where possible, carry out a mechanically abrasion to remove paint from the surfaces (where necessary) and to increase strength and resistance of the adhesion. Let dry the pre-treated area before applying the adhesive.

KOMAS EPOXY NX-5000 & NX 5050 is available in bi-component cartridge (side by side), or in several sizes drums. Anyway, blending should be made through static mixer composed by a minimum of 16 elements. A lower number of components doesn’t allow a complete mixing. A higher number of components would increase speed of the chemical reaction of hardening. Static mixer are disposable.

Bi-components cartridges can be used through manual applicators or specifics pneumatic tools,, depending on capacity and cartridge shape. For process and in continuative applications, automatic dosing systems for low viscosity materials can be used. Base on specific needs Inchimica):s technical service is available to offer advice for the correct machinery to use with specific requirements.

The mixture must be applied directly from the mixer on the pre-treated dry surface. The optimal layer of adhesive that will guarantee the highest resistance for the joint should be at least 0.5 mm thick. The components have to be assembled before the adhesive starts curing and sealed with a steady pressure all over the gluing area.