8991 3M | Alldatasheet

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April, 2015 3M™ Polyester Tape 8991/8991L Product Description 3M™ Polyester Tape 8991 is a blue polyester tape with a silicone adhesive. It can be used in a large variety of high temperature applications including powdercoat masking, ashbreaker, and bag sealing applications. Additional applications include, splicing, tabbing, or roll closing silicone treated liners or materials. Product Features

  • Polyester lms oer excellent thermal, abrasion, and chemical resistance while maintaining their exibility.
  • Blue color makes tape placement obvious for both application and removal.
  • Thin backing leaves a sharp paint line and some conformability.
  • Silicone adhesives oer high heat resistance compared to many rubber and acrylic adhesives, reducing failure due to softening, oozing, and adhesive transfer.
  • Silicone adhesives adhere well to tough-to-stick-to surfaces like silicone liners and xtures coated with mold release.
  • Silicone adhesive removes cleanly from many surfaces.
  • Linered version available for die-cuts.

3M™ Polyester Tape 8991/8991L Technical Information Note The following technical information and data should be considered representative or typical only and should not be used for specication purposes. Typical Physical Properties Property Values Method Color Blue Total Tape Thickness 0.061 mm 2.4 mil ASTM D3652 Backing Thickness 0.025 mm 1 mil ASTM D3652 Backing Polyester Adhesive Silicone Liner Polyester Liner Thickness 0.075 mm 3 mil ASTM D3652 Typical Performance Characteristics Property Values Method Dwell/Cure Time Substrate Notes 180° Peel Adhesion

3.4 N/cm 31 oz/in ASTM

12 in/min (300 mm/min) Tensile Strength 50.8 N/cm 464 oz/in ASTM D3759 Elongation at Break 100 % ASTM D3759 Temperature Use Range Up to 204 Up to 400

3M™ Polyester Tape 8991/8991L Available Sizes Property Values Standard Roll Length 65.8 m 72 yd Handling/Application Information Application Ideas

  • Masking for powdercoat painting.
  • Flashbreaker tape when pulling through cured coating such as epoxies.
  • Holding and splicing dicult to stick to surfaces such as silicone liner.
  • Holding parts or sealing vacuum bags during processing. Storage and Shelf Life Store under normal conditions of 60° to 80°F (16° to 27°C) and 40 to 60% relative humidity in the original packaging material. To obtain best performance, use this product within 24 months from date of manufacture. Trademarks 3M is a trademark of 3M Company. References Property Values 3m.com Product Page https://www.3m.com/3M/en_US/company-us/all- 3m-products/~/3M-Polyester-Tape-8991? N=5002385+3293242593&rt=rud Safety Data Sheet (SDS) https://www.3m.com/3M/en_US/company-us/SDS- search/results/? gsaAction=msdsSRA&msdsLocale=en_US&co=ptn&q=8991/899 This product was manufactured under a quality system registered to ISO 9001 standards.

3M™ Polyester Tape 8991/8991L Information Technical Information: The technical information, guidance, and other statements contained in this document or otherwise provided by 3M are based upon records, tests, or experience that 3M believes to be reliable, but the accuracy, completeness, and representative nature of such information is not guaranteed. Such information is intended for people with knowledge and technical skills sucient to assess and apply their own informed judgment to the information. No license under any 3M or third party intellectual property rights is granted or implied with this information. Product Selection and Use: Many factors beyond 3M’s control and uniquely within user’s knowledge and control can aect the use and performance of a 3M product in a particular application. As a result, customer is solely responsible for evaluating the product and determining whether it is appropriate and suitable for customer’s application, including conducting a workplace hazard assessment and reviewing all applicable regulations and standards (e.g., OSHA, ANSI, etc.). Failure to properly evaluate, select, and use a 3M product and appropriate safety products, or to meet all applicable safety regulations, may result in injury, sickness, death, and/or harm to property. Warranty, Limited Remedy, and Disclaimer: Unless a dierent warranty is specically stated on the applicable 3M product packaging or product literature (in which case such warranty governs), 3M warrants that each 3M product meets the applicable 3M product specication at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR ARISING OUT OF A COURSE OF DEALING, CUSTOM, OR USAGE OF TRADE. If a 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability: Except for the limited remedy stated above, and except to the extent prohibited by law, 3M will not be liable for any loss or damage arising from or related to the 3M product, whether direct, indirect, special, incidental, or consequential (including, but not limited to, lost prots or business opportunity), regardless of the legal or equitable theory asserted, including, but not limited to, warranty, contract, negligence, or strict liability.

3M™ Polyester Tape 8991/8991L 3M United States 3M Center St. Paul, MN 55144-1000 800-362-3550 www.3M.com Please recycle. © 3M 2021. All Rights Reserved. The brands listed above are trademarks of 3M