AR FLY (TIANJIN) TECHNOLOGY LTD

Home > Knowledge > Content
Felt Types
- Nov 28, 2017 -

Woven Felt

  • Wool or a blend of wool and other yarn is woven into a cloth then felted using steam and pressure to make the fibers interlock.

  • Very durable and resilient fabric.

  • Cut parts may fray and have loose fibers.

  • Maximum thickness 1/2".

  • Typical uses include:

    • Printing (Etching) Blankets

    • Musical Instruments

    • Door Seals

Pressed Felt

  • Oldest form of fabric known to man, predates weaving and knitting.

  • Wool fibers or a blend of wool and other fibers are pressed together with steam and pressure to allow the fibers to naturally interlock.

  • This felting process produces a fabric that is slightly less durable than the woven felt but is less expensive and can be made thicker.

  • Parts will not fray and loose fibers are minimal.

  • Can achieve very high densities

  • Maximum thickness 2".

  • Typical uses include:

    • Filters

    • Wicks

    • Gaskets

    • Wipers

Needled Felt

  • Synthetic fibers or a blend of wool and synthetic fibers are interlocked using machines with thousands of needles moving in an up/down motion to mechanically interlock the fibers.

  • Wool blends are less expensive than pressed or woven blends but tend to exhibit a bevel at the edge of cut parts.

  • Cut parts do not fray and loose fibers are minimal.

  • Maximum thickness 1-1/2".

  • Typical uses include:

    • Craft Felts

    • Inexpensive substitute for Pressed Felts

    • Cushioning

    • Felt bottoms for lamps

Composition

100% Wool Fiber Felt

  • Fibers come from sheep.

  • All natural and has excellent wicking and durability properties.

  • Is most often pressed or woven.

  • Can be needled but usually has binders added to help hold fibers together.

  • High quality and density

  • Typical uses include:

    • Bearing seals

    • Polishing Pads

    • Wipers

    • Lubricators

Blends of Wool and other fibers

  • Varying ratios of nylon, polyester, rayon, polypropylene, or cotton are mixed with wool to meet published specifications or control performance and cost.

  • Can be pressed, woven or needled.

  • Low density and cost

  • Typical uses include:

    • Packing

    • Filters

100% Synthetic Fiber Felt

  • Polyester, polypropylene, Teflon, Nomex, Rayon, and Kevlar fibers are needled or woven to form fabrics which perform to the fibers specifications.

  • Cost is dependant on the fiber cost.

  • Materials can be die cut with no fraying and minimal loose fibers.

  • Widest range of applications from very low tech and general to high tech and specific

  • Typical uses include:

    • Filters

    • Weather Stripping

    • Straps

    • Packing and Cushioning

Form

Felt Rolls

  • Felts with thicknesses of 1/32" to 1" and densities up to 18 lbs/sq.yd. come in roll form.

  • The length of the roll is dependant on the thickness of the felt and varies from approximately 8 to 300 yards.

  • The width of the roll is between 54" and 84".

Felt Sheets

  • Felt with densities greater than 18 lbs/sq.yd. are usually made in 36" x 36" sheets and can be made up to 2" thick.

  • These felts can be custom made in larger sheets if needed.