Wondermask^© PL
Peelable temporary mask

Description
Techspray TEC 2218 Wondermask© PL Latex is a temporary, peelable solder mask comprised of a thixotropic, natural acrylic latex designed to withstand fluxing, wave soldering, and cleaning operations. Wondermask PL Latex is rapid drying and has excellent peel strength. Cured mask can be used in water or solvent systems and in masking for conformal coatings. Excellent heat stability allows for prolonged exposure to high temperatures, without product degradation. This product may be used in most common forms of mask applications such as robotic, pneumatic, hand applied, or template screening (not recommended for silk screening).

Applications

• Protects plated through holes and contact surfaces from solder during soldering operations
• Mask areas during conformal coating applications
• Gold fingers
• Card edges

Directions
For best results, apply a 0.4mm to 0.5mm coating to desired area. The substrate should be free from grease, oil, and particulate matter. Drying times depend upon ambient humidity. Under normal conditions Wondermask PL Latex should be ready for preheat stage in 45 to 60 minutes. To accelerate cure time to 20 - 30 minutes, place in oven at 65°C. Wondermask PL Latex is not recommended for use on bare copper because of possible discolouration; TEC2211 Wondermask P is recommended in these circumstances.

Test results indicate that this product is suitable for lead-free soldering, which often occurs at higher temperatures. Please evaluate in your lead-free process.

 Techspray TEC2218 Wondermask PL

This movie is of one of our robots being used to dispense a liquid temporary solder mask onto a printed circuit board.

Click here for standalone player

See also!  Solder masking dots & tape  Wondermask P

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October 2007
Version 3.2