Cleansteam™ and Easy-Tear Cleansteam Bags

Source: Pall Biotech

Cleansteamâ„¢ and Easy-Tear Cleansteam Bags

Sealing Devices
Sealing of Tyvek with HDPE film, and HDPE with HDPE (easy-tear band) is best performed using a validated impulse sealing device, not constant heat.

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Pall Life Sciences does not sell sealing devices but has good experience with the following companies:

Processing Parameters of Impulse Sealer
Best sealing results of High Density Poly-Ethylene (HDPE) are obtained under moderate temperature-time-pressure conditions:

  • Heating 1 second at 150 °C
  • Cooling down to 90 °C or even colder before opening the sealing bars

Contact pressure is not adjustable in most cases, and is set by the manufacturer. Good maintenance and calibration of the sealing equipment is crucial and must be validated on a regular basis. If bad sealing results are obtained, do not change validated time and temperature conditions but check alignment of sealing bars and age of the sealing wire coverings (Teflon).

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