Self-locking Arrow (AP) Design - Single And Double Row Models Available
This style is shift locked in the same maner as the standard design, but will lock only in one direction. Therefore, with this design the leading edge must always be on top or always be on bottom in order to work.
Ideal for operations which are joining a wide range of materials. It can join thin materials with reduced risk of tabs breaking off of the strip. It can join materials up to .250" thick.
This style of stitch has four point locking, providing approximately twice the strength of the standard design.
Tapered "T" Design - Single and Double Row Models Available
The TTPSJ Tapered "T" punch has tapered sides to reduce the amount of scuffing and fines made during the shifting and locking of the stitch. It also has large engagement areas on the upper part of the T configuration. Larger overlap when the stitch is fully shifted is ideal for thin soft materials. The larger over lap resists bending and pulling apart when being wrapped around rollers.
Tapered Arrow Design - Single and Double Row Models Available
The TAPSJ tapered arrow punch is similar to the APSJ arrow punch, except the sides are tapered to reduce the amount scuffing and fines made during the shifting and locking of the stitch. The picture shows Taper Arrow Punch stitch taken from directly above and before it is shifted so you can clearly see the taper.
Self-locking Standard (WR) Design - Single And Double Row Models Available
Tension must be applied after making the stitch in order to shift lock it into position and prevent the material from coming apart. The stitch will lock if pulled from either direction.
Ideal for operations joining materials up to .1" (2.5mm) where the extra strength of the arrow design is not needed.
This style of stitch has two point locking, providing approximately twice the strength of the standard design.
Straight Sided Design - Single and Double Row Models Available
This design is not self-locking and requires that a precut strip or rod be inserted through the row of stitches to obtain a holding stitch.