Unisub Sublimation Blank Gloss Hardboard 3.75" Coaster : Square w/Cork Back

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SKU: U5677-5

Quantity Per Pack: 5 Pieces
Sale price$10.95

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Unisub sublimation coasters make great gifts or add a fine unique touch as décor. Designed using hardboard with a gloss white sublimation transfer surface for optimal color vibrancy. Hardboard allows you to transfer images quicker making production a breeze. Impress your friends, family, or co-workers. Great for clubs, businesses, or home and holiday occasions.



  • Size: 3.75” x 3.75” x .125” Square
  • Pieces: 5 or 40
  • Substrate: Hardboard
  • Finish: White Gloss
  • Coaster has cork backing to protect furniture surfaces

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Application Instructions

  • Recommended Heat Press: Flat press
  • Prepress: 20 seconds with the top facing up and covered with a Pro Grade Non Stick Sheet. Allow the substrate to fully cool prior to attempting your sublimation transfer. This will ensure optimal quality transfer of your design.
  • Time: 60 - 70 seconds depending on artwork
  • Temperature: 400° F (204° Celsius)
  • Pressure: Medium pressure

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Customer Reviews

Based on 38 reviews
Kathleen Cain

Unisub Sublimation Blank Gloss Hardboard 3.75" Coaster : Square w/Cork Back

Darcy Reese
Great Product!

I have ordered the square cork back coasters a couple of times - the colors always sublimate vibrant and crisp. I will definitely order again and highly recommend!

Endia J.

First time ordering this product and time/temp used for my press along with the design chosen came out perfect! Fast shipping and packaged very well - will DEFINITELY be placing another order again soon!!!!

Jen K
Great coasters!

Beautiful colors! I just gave these a try and the colors are so vibrant. There is a protective coating on top that is a pain to peel off. Other than that great product -I will be ordering more soon!

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