Isoten products are the converting industry’s leading product in the vacuum roll category and have been used in a wide variety of applications. Vacuum Tension Rolls pull a web into intimate contact with the roll so that friction forces that prevent slippage are much higher than with standard rolls. The result is a highly effective tension device.

Useful characteristics of a vacuum roll include:

Contacts web on single side only
Handles large tension differentials without slipping
Works at extremely low tensions
Accommodates small wrap angles
Removes boundary air as web contacts rol

Standard Product

All Isoten rolls include:

Plasma coated steel roll
Plated internals for corrosion resistance
Hole pattern selected to match your web and process parameters
Exhauster connection with integral damper
Pillow block bearing and mounts
Driveshaft with keyway to your specification

Favorable price and delivery considerations apply for standard Isoten vacuum roll configurations.

Nominal roll diameters of 6”, 8”, 10”, 12”, 16”, and 20”
Roll lengths from 12” to 140”
Fixed vacuum zone (wrap) angle between 60° and 180°
Fixed web width

Options

A wide variety of standard options are available to meet your needs, and CCR Application Engineers can address your custom requirements as well.

Adjustable internal deckles can be included to match your variable web widths
Multiple wrap angles resulting from multiple web paths can be accommodated via selectable vacuum zones
Roll coverings range from polymer compounds to stainless steel screen or felt for delicate webs

Stainless steel or other shell materials can be provided to suit your process environment
Narrow web requirements can be addressed with our cantilevered vacuum roll design
Custom vacuum supply connections also available

Examples of Special Applications

Vacuum Tension Rolls and belts become especially cost-effective when other useful characteristics are understood and used to advantage.

Transport Wet Webs

Single side contact allows tension control with web wet on one side
A classic application for Vacuum Tension Rolls is between coater and dryer

Handle Lightweight Films

Positive grip even at very low tension minimizes web stretching & breaks

Deal with Web Breaks

Use Vacuum Tension Rolls to hold web despite break so less threading is required for restart, or to initiate alternate path when web break is detected
Large diameter polymer covered vacuum roll handling wet web at entrance to dryer

Implement Short-Term or Constant Loops

Use Vacuum Tension Rolls to accumulate web for metered start-stop or a standing loop

Meter & Draw a Web

One roll holds web while other vacuum roll pulls for a metered distance

Release Web from Tenter Frame

Meets requirement for very low tension at tenter chain release point

Unique, Process-Specific Applications

Contact Tech Sales Co., to discuss your proprietary application under a confidentiality agreement.