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[Ahlstrom Advanced Filtration] A registered trademark for a fabric series made with white, nonwoven fibers, with options available using either polyester fibers or polyethylene fibers. Hollytex® is spunbonded from continuous filaments resulting in a strong, lint-free, lightweight fabric with no added binders or pigments. It is calendared to produce a very smooth surface. Hollytex® is porous, but non-reactive, allowing moisture, vapors and liquids to pass through while effectively blocking particles. It is used as a support material, release paper, filtering agent, and interleaving paper. It is also used as a backing material for the 2-layer GORE-TEX® laminate.


Synonyms and Related Terms

Holytex; Holly-Tex


  • Lining, interleaving and as a release paper
  • Support and backing
  • Humidification, drying and flattening
  • Barrier layer

Physical and Chemical Properties

Hollytex® has high tensile strength and high tear strength. Acid-free and non hygroscopic. Can be thermally and ultrasonically welded. Polyester is resistant to acids, oxidizing agents, solvents, rot and mildew. Dimensionally stable in all directions.


Hollytex is sold in 60" wide rolls. Table shows available, weight, thicknesses, permeability and polymer type.

Grade Basis Weight (g/m3) Thickness (mm) Air Permeability (L/mm2/sec) Material
#3220 16.5 0.061 7040 Polyester
#3252 30.5 0.058 1840 Polyester
#3254 61.1 0.102 352 Polyester
#3256 23.9 0.058 3640 Polyester
#3257 32.3 0.074 2200 Polyester
#3265 81.1 0.135 160 Polyester
#3271 111.6 0.211 264 Polyester
#3324 66.7 0.135 72 Polyester
#3329 96.5 0.135 41 Polyester
#6101 55.8 0.127 624 Polyethylene
#6102 201.5 0.368 40 Polyethylene
#6103 54.1 0.140 1200 Polyethylene
#6107 55.8 0.165 2800 Polyethylene


Properties of Synthetic Fibers

Resources and Citations

  • Rachael Perkins Arenstein, Lisa Goldberg, and Eugenie Milroy, ‘Support and Rehousing for Collection Storage’ In ‘Preventive Conservation: Collection Storage’ Lisa Elkin and Christopher A. Norris (eds.), Society for the Preservation of Natural History Collections, New York. 2019.
  • Marie Svoboda, Conservation Survey Index, unpublished, 1997

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