PTFE Belt Splice Options

Andrew Roberts provides a broad range of PTFE Belt Splice Options suited to the performance specifications of each belting system.

Soft Seal Splice - Andrew Roberts Soft Seal splices are flexible and can be reinforced with stitching for extra strength. Use Soft Seal splices where metal is undesirable. Alligator Splice - Andrew Roberts Alligator splices offer exceptionally strong metal lacing. These are recommended for use with 5 inch diameter, or larger pulleys.
Butt splices are heat sealed with compiler on the underside of the belt, creating a smooth top surface. Butt Splice - Andrew Roberts Overlap splices are the most popular type used in the industry and can be enhanced with molding for food processing applications. Overlap ranges from 1 to 6 inches, with directional belt angles of 22, 45, 60, and 90 degrees Overlap Splice - Andrew Roberts
Clipper Splice - Andrew Roberts Clipper is a metal lacing .This strong and extremely flexible splice conforms well to smaller diameter pulleys   Other splices available on special order, include Molded & Porous Overlap.

Minimum Pulley
Diameter Guidelines For PTFE® Coated Fabric Belts



Belt Thickness



Belt Width

Under 11”

12-29”

30-59”

over  60”

.005-.010

3”

6”

8”

10”

.011-.020

6”

6”

8”

10”

.021-.025

8”

8”

8”

10”

.026-.030

10”

10”

10”

10”

 

Minimum Pulley
Diameter Guidelines For PTFE Coated Fabric Belts
(Metric)



Belt Thickness



Belt Width

Under 304 mm

305-761 mm

762-1523 mm

Over 1524 mm

0.127-254 mm

76 mm

25 mm

34 mm

42 mm

0.279-507 mm

152 mm

25 mm

34 mm

42 mm

0.533-635 mm

203 mm

34 mm

34 mm

42 mm

0.660-762 mm

254 mm

42 mm

42 mm

42 mm

PTFE Belt Splice Options

Splice Flap covers
Clipper or Alligator splice metal lacing, providing a continuous
release surface
Splice Flap Covers - Andrew Roberts Two-Ply Lamination provides uniform belt
thickness, allowing consistent heat transfer. Splices are
staggered for improved strength. This construction is available
on selected fabrics and widths.
.2 Ply Lamination - Andrew Roberts
Edge Reinforcement is
available with 2 inch PTFE glass fabric folded over & sewn
with two rows of stitching. Heat sealed PTFE film edges, and 1
inch wide fabric edges heat sealed on the top surface are also
available. Edge reinforcement prevents unraveling of porous
belts and provides strong support for pin guides and grommets.
Edge Reinforcement - Andrew Roberts    

 

Belt Tracking - Andrew Roberts The axis of each pulley and roller must be parallel to all others and at right angles to the direction of the belt travel. The shorter the distance between pulleys, the greater the need for accurate parallelism. Techniques that improve tracking include belt position sensing
devices that provide for automatic correction, and belt pin guides which receive pulley grooves
.
 
Pin Guides. Standard stainless steel pin guides, one inch center to center and one-half inch edge to center, are available on one or both sides of any belt. Edge reinforcements may be necessary on some fabrics

Now Available – Silicone Guide Strips. White silicone extruded guide strips extend machinery life by avoiding abrasive surface wear of pulleys. These strips allow belts to move smoothly, virtually gliding through tracking grooves. Can be used as an edge guide or a center guide.

 

 

You may also need:

  • Rotary Heat Sealer Belts

    We maintain a large inventory of rotary heat sealer belts used on continuous rotary heat sealing equipment.

     

  • PTFE Belts

    PTFE belts and belting materials are available for applications that require superior release characteristics, and thermal stability

     

  • PTFE Fabric

    Our PTFE fabric consists of a fiberglass substrate which is then coated with PTFE. This combination provides a dimensionally strong non-stick surface

     

  • PTFE Heat Sealers – Belt Repair

    Now available through Andrew Roberts is a complete sealing package including heat sealers, high temperature bonding film and silicone release cloth

     

  • Metal Detectable PTFE Tape

    Metal detectable PTFE tape is ideal for food manufacturers who are packaging their products in poly bags. Tape that contaminates packaged food is detected

     

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