ABS Edgebanding Products - Doellken North America

Doellken ABS Edgebanding can be processed on all Edgebander machines (straight processing and machinery for curved processing) using hot melt glue. Gluing, cross-cutting, milling, scraping and subsequent buffing with polishing wheels and hot-air dryers for high quality surfaces pose no problem. To ensure clean and durable edgeband application, certain salient processing parameters should be followed which may be dependent on the materials used (Edgebanding, glue, boards), the Edgebander machine and ambient temperatures. Trials to determine relevant optimal settings are therefore recommended. Manufacturers&#; guidelines for an intended application should also be considered.

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Adhesive

All conventional hot melt glues (EVA, PA, APAO, PUR) may be used on Doellken ABS Edgebanding. The low-shrink raw material formulation of Doellken ABS, together with highly heat-resistant Adhesives can guarantee reliable bonding even for Edgebanding thicker than 3 mm. Particularly heat-resistant Adhesives are recommended for applications exposed to high temperatures, e.g. near kitchen ovens or for furniture exported in containers. Ensure that the glue hopper on the Edgebander machine has sufficient glue to maintain a constant temperature during application. The glue application temperature will vary between 90°C and 220°C, depending on the type of Adhesive. Please note that thermostats in hot melt hoppers are often inaccurate and may deviate considerably from the actual temperature on application rollers. It is advisable to measure the temperature on the application roller. Doellken ABS Edgebanding cannot be glued using PVAC glue and the CA method.

Adhesive amounts to apply

Please follow the Adhesive manufacturer&#;s instructions. Apply the Adhesive evenly and in sufficient quantities for beads of Adhesive to be pressed out along the edges of the freshly glued Edgebanding, ensuring that the spaces between board wood- chips will be filled. The amount of glue required depends on the density of the chipboard and the type of Adhesive.

Application temperature

For best results fitting Edgebanding, work with boards and Edgebanding at room temperature (not below 18°C). Material stored outdoors should be warmed up overnight. Hot melt glue will cure before the Edgebanding is in place if the temperature of the board or Edgebanding is too low. Draughts should for this reason also be avoided.

Wood moisture

The optimal moisture content of the boards should be between 7 and 10% for further processing.

Feed rate

The special Doellken ABS Edgebanding raw material formulation is designed to suit feed rates required in both low and high volume processing. Depending on the Edgebander gluing machine, speeds between 10 and 100 m/min. are possible. Speeds of up to 30 m/min. are also feasible on modern portal type machining centers, depending on the shape to be processed.

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Press rollers

Bearing in mind the machine parameters, ensure that an adequate number of rollers are available and adjust the pressure to achieve the best possible appearance of the joint.

Extraction

Thermoplastic Edgebanding requires higher extraction power than duroplastic Edgebanding. Doellken ABS Edgebanding has the advantage that electrostatic charging is lower, compared to other thermoplastic raw materials.

Milling

If possible, use cutters with 3 to 6 teeth, with ca. 70 mm diameter and at speeds between 12 000 and 18 000 rpm. Incorrect speeds or blunt cutters may damage the Edgebanding. In the event of smearing, reduce the speed of the cutter or cut against the feed (increase feed, if necessary).

Scraping

Since ABS colors tend to fade slightly after scraping, the plastic scrapings should be 0.1 to 0.2 mm thick at the most. To avoid chatter marks, the routers used for milling should be running true. Diamond coated cutters are recommended. Hot air blowers may be used for optimal scraping results where color shades are critical.

Buffing

Buffing wheels are ideal for buffing the radii of Doellken ABS Edgebanding. Any fading after scraping may simply be buffed away with these wheels, with the color of the radius then matching that of the Edgebanding itself. With through-feed Edgebander machines, remnants of the glue may also be removed with the buffing wheel. Glue remnants may also be removed using electronically controlled release agent spraying units as is common in industry. This improves the scraper blade finish as well.

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