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KoolTemp™ Insulated Envelopes

Product Features

  • Durable, thermal insulated envelope designed for overnight shipment of temperature-sensitive articles and cold chain shipments
  • Lightweight and freight saving
  • Spacious payload chamber for your product and our Koolit Mats (saddlebag gel pak - sold separately)
  • Insulated with entangled, multi-denier fibers in air-still bladder that is lightweight, and minimizes shock and vibration
  • Reflective exterior surface minimizes heat loss
  • Proprietary welded seam-sealing process creates a virtually airtight crush-resistant compartment
  • Closure tape is wide, tamper resistant and will maintain its integrity when the envelope is packed in dry ice
  • Also available with non-permanent, re-usable closure tape for recyclable applications
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Kooltemp Insulated Envelopes

T he KoolTemp insulated envelope is a lightweight, durable, thermal insulated envelope designed with a spacious payload chamber for your temperature- sensitive articles, and our Koolit mat (sold separately). Available in popular sizes, the KoolTemp insulated envelope can be used with or without standard overnight boxes for further protection. This envelope addresses the challenge of heat loss with its efficient insulation, reflective exterior surface, and virtually airtight payload chamber.

  • Insulation: The KoolTemp envelopes are insulated with entangled, multi-denier fibers in an air-still bladder that restricts the penetration of thermal energy and minimizes shock and vibration of the payload during transit.
  • Barrier: A multi-layered metalized exterior barrier composite minimizes heat loss by reflecting 97% of all radiant heat transfer.
  • Seams: Proprietary welded seam-sealing process creates an airtight, crush-resistant compartment with structural integrity.

  • Tape: Closure tape is wide, tamper resistant and designed to maintain its integrity even when the envelope is packed in dry ice. It is also available with non-permanent, re-usable closure tape for recyclable applications.
  • The Koolit saddlebag gel pak is used to further protect your payload. Combined with the envelope, the saddlebag mat surrounds your product in a temperature- stabilizing environment.

Easy Packout Recommendations

For optimum results prior to packing, chill your payload and the envelope to the lowest possible temperature within your required temperature range. Refrigerant gel paks should be pre-frozen for 24 hours to maximize performance.

  1. Insert the product and refrigerant into the envelope.
  2. Perform double closure by:
    • pinching/sealing the envelope along the inner zip lock, and
    • peeling away the self-adhesive strip on the envelope flap and folding shut.

KoolTemp Insulated Envelopes Product Information
IE912 Zip Lock with Closure Flap Size 9" x 12" Seal-to-Seal 50 or 100 Env/Carton
IE1216 Zip Lock with Closure Flap Size 12" x 16" Seal-to-Seal 50 Env/Carton