The physical properties of Tyvek® are unaffected by water and many chemicals.

• For the same application, lighter weights of Tyvek® are normally used.
• Tyvek®, like other synthetics, is more elastic. It should be handled under the lowest tension practical to avoid distortion and misregistration. Tyvek® will elongate 15% to 25% before breaking, making deep embossing possible without fracturing.
• The physical properties of Tyvek® are the same, wet or dry. Although unaffected by water and many chemicals, Tyvek® may swell on contact with certain organic solvents used in some inks, coatings and adhesives. See pages 32-33 for details. It is also recommended that you conduct your own tests before use.
• Tyvek® absorbs little or no moisture; therefore, longer drying times are required for most inks, coatings and adhesives.
• Tyvek® is a thermoplastic. It maintains its toughness and flexibility down to -100°F (-73°C). An unrestrained sheet of Tyvek® is dimensionally stable up to 170°F (77°C) and will not shrink. Temperatures above 175°F (79°C) should be avoided when processing under tension.
• Tyvek® is tough; web breaks rarely occur. When sheeting, slitting and die-cutting, each filament must be completely cut; “hangers” will not break off as they do with paper. Specialty dies may be required to process Tyvek®.
• Tyvek® has lower surface friction, which may facilitate handling in some operations.
• Tyvek® is slippery and should not be used in any application where it will be walked on without the application of a slip-resistant coating.

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