Psas on Film Liners cafa convention



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tarix20.05.2018
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PSAs on Film Liners

  • CAFA Convention

  • Marriott Hotel & Golf Resort

  • Saturday, February 11, 2007


Types of Film Liners

  • PET (Polyester)

  • Highest temperature resistance

  • Strong, stretch resistant

  • Kiss & die cut-able

  • PE (Polyethylene)

  • Lower heat resistance

  • Softer & “hand” stretchable

  • Low & high density available

  • PP (Polypropylene)

  • Higher temperature resistance than PE

  • Soft - hand stretchable

  • Die cuttable



Paper Liners vs. Film Liners

  • Paper Liners

  • Described by basis weight

  • Adequate caliper control

  • Adequate cross web profile

  • Moisture sensitive

  • Tears easily

  • Opaque

  • Generally lower cost



Typical Silicone-Coated Release Liners

  • 55 lb. Densified Kraft (SCK)

  • 60 lb. Poly-coated

  • 74 lb. Poly-coated

  • 80 lb. Densified Kraft (SCK)

  • 12 pt. Board (poly-coated)

  • 1.5-mil Polyester Film

  • 2.0-mil Polyester Film

  • 4.0-mil Polyester Film

  • 5.0-mil Polyethylene & Polypropylene Film



So…What’s a “Lb.”?

  • Lb. refers to the basis weight of the paper expressed per ream where….

  • 1 ream of paper = 333.3 Square Yards

    • 333.3 SY of a 55 lb. liner will weigh 55 lbs.
  • 12 pt. Board refers neither to basis weight nor to caliper. It’s a different measure.

    • 12 pt. Board in basis weight = 140 lb.


What about Poly-coated?

  • The paper & the polyethylene coating are added together to get the total basis weight.

  • Example: A 74 lb. poly-coated liner could consist of a 50 lb. paper coated with 12 lbs. of polyethylene on each side.



Advantages of Film Liners



Industries Using Film Liners

  • In addition to the abrasives industry, film liners can be found typically in the following:

  • Electronics

  • Automotive

  • Medical

  • Fenestration or Window Manufacturers



Summary



???Questions???



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