Paper transport belt of alkylated chlorosulfonated polyethylene

Details Paper transport belt of alkylated chlorosulfonated polyethylene Paper transport belt of alkylated chlorosulfonated polyethylene

1999-02-17

2001-03-27

Wu, David W. (Department: 1713)

Sheet feeding or delivering

Delivering

By electrostatic or magnetic conveyor

C271S208000, C524S576000, C524S585000, C525S333900, C525S334100

Reexamination Certificate

active

06206364

ABSTRACT:

SUMMARY OF THE INVENTION
The present invention relates to a paper transport belt and a paper handling apparatus containing a paper transport belt which is made from a composition containing an alkylated chlorosulfonated polyethylene polymer.
In the past, paper transport belts have been produced from EPDM compositions and chlorosulfonated polyethylene (CSM) compositions. The EPDM containing belts are characterized by better tension decay properties than the chlorosulfonated polyethylene containing belts. Unfortunately, the EPDM containing belts have a greater tendency to mark paper. The EPDM can be made progressively more no-marking by reducing the level of carbon black. However, there is a minimal level of conductive carbon black needed to achieve required static conductivity properties. Unfortunately, use of EPDM will still mark paper with this minimum carbon black level. In applications where non-marking properties are critical, CSM is used in the belt composition. CSM will retain its non-marking characteristics at much higher carbon black levels. However, tension decay properties and, therefore, service life is sacrificed as a result. Therefore, there exists the need for a paper transport belt which is made from a material that exhibits excellent tension decay properties with concomitant desirable non-marking properties and static-conductivity properties.


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