Description
3M?Circuit Plating Tape 851 is a green polyester film tape with a unique conformable adhesive for printed circuit board masking during electroplating.
- Polyester backing reduces stretch and recovery of tape associated with uneven stop-off line.
- ?Thick adhesive coating reduces undercutting because adhesive blocks out solutions between fingers.
- ?Specially designed adhesive that generally performs better when no ovens are used to heat tape and boards.
- Low-stretch polyester film can be applied by machine or by hand.
- ?Tape must be firmly pressed down by equipment with rubber-covered rollers or a? ? rubber-covered platen press. Hand
- rolling usually does not provide enough pressure. A vivid outline of the circuit leads usually indicates adequate pressure was used.
- ?Solvent clean-up of the board is recommended to facilitate subsequent soldering.
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