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Primers for PET films improve adhesion for inks, coatings, and adhesives, creating a durable, printable, or bondable surface. Common types include water-based polyurethane dispersions (PUDs), acrylic bonding primers, and specialized adhesion promoters like 3M™ Primer 94. These are often used on corona-treated PET to ensure high-performance bonding in industrial, packaging, and graphics applications.
Key Primer Types and Brands for PET Films
- Adhesion Promoters (Graphic/Vinyl/Wrap):
- 3M™ Tape Primer 94: Ideal for enhancing tape, film, and vinyl graphics adhesion to PET.
- 3M™ Scotch-Weld™ AC77: Designed for difficult-to-bond low surface energy plastics.
- Industrial Coating Primers (Print/Functional):
- Mica I-372-C: A water-based, non-yellowing primer providing excellent weatherability.
- Waterborne Polyurethane Dispersions (PUDs): Offered by companies like UBE for superior water, chemical, and scratch resistance.
- WeGlow PET Promoter: Used to treat surfaces for printing or coating, forming a thin, effective layer.
- General Purpose/Bonding Primers:
Application Guidelines
- Surface Preparation: PET films often require corona treatment before priming to increase surface energy for better bonding.
- Application Method: Primers can be applied via spraying, coating, or with a brush/foam applicator.
- Drying Time: 3M™ Primer 94 requires roughly 5 minutes to dry, while other water-based primers might take longer, sometimes enhanced by fans.
- Thin Coats: Apply thin, uniform layers (typically 10-15 micrometers) rather than heavy coats to avoid issues.
Common Applications
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Web results
Adhesive Primers for Optical and Packaging Films
DIC Corporation
https://www.dic-global.com › ... › Special topics 2018
DIC Corporation
https://www.dic-global.com › ... › Special topics 2018
While less than 0.1 micron (1/10,000 millimeter) thick, the primer ensures a powerful bond between the PET film substrate and coating layer, thereby playing a ...Read more
PET film primer Water-based adhesive coating
Sinograce Chemical
https://www.sinogracechem.com › pet-film-primer-water...
Sinograce Chemical
https://www.sinogracechem.com › pet-film-primer-water...
PET Primer is applied in PET materials and PET BOPP board materials. It's a kind of treating agent, and the using purpose is Ink acceptability, adhesion, ...Read more
Primer coating composition for polyester film
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
An object of the present invention is to provide a method for producing a primer coating composition for a new PET film that can visually confirm the completion ...Read more
Tek Tip - How to Determine the Presence of a Primer
Tekra LLC
https://www.tekra.com › Resources › Tek Tip White Paper
Tekra LLC
https://www.tekra.com › Resources › Tek Tip White Paper
1. For clear film, uncoated polyester is almost always tackier than a primer treated side. · 2. For clear films and low to mid haze films, swipe one side of film ...Read more
Primer for PET Films
Paper, Film & Foil Converter
https://www.pffc-online.com › Coating/ Laminating
Paper, Film & Foil Converter
https://www.pffc-online.com › Coating/ Laminating
Sep 1, 2010 — Water-based primer designated I-372-C is said to provide excellent weatherability, non-yellowing characteristics, and a reliable and durable ...
3M™ Tape Primer 94 | 3M United States
3M
https://www.3m.com › ... › Adhesion Promoters
3M
https://www.3m.com › ... › Adhesion Promoters
3M™ Tape Primer 94 can be used to improve the overall adhesion of tape, film and vinyl graphics to polyethylene, polypropylene, ABS, PET/PBT blends, concrete, ...Read more
People also ask
What is the best primer to seal PET odors?
KILZ PRIMER
Kilz is a sealant. Priming the affected surface helps block and seal the odors, preventing them from seeping out. Additionally, the odor-sealing properties in primer help provide a barrier so odor molecules can't penetrate. KILZ is a great solution for medium to severe odors, including those from pets.
Kilz is a sealant. Priming the affected surface helps block and seal the odors, preventing them from seeping out. Additionally, the odor-sealing properties in primer help provide a barrier so odor molecules can't penetrate. KILZ is a great solution for medium to severe odors, including those from pets.
Pet Enzym treatment or Kilz? - ProFloors
ProFloors
https://www.profloorsus.com › enzym-or-kilz
ProFloors
https://www.profloorsus.com › enzym-or-kilz
Web results
A NEW ERA OF PRIMER COATING ON POLYESTER.
Coating Plasma Innovation
https://www.cpi-plasma.com › uploads › pet_prim...
Coating Plasma Innovation
https://www.cpi-plasma.com › uploads › pet_prim...
PDF
Grafting nitrogen functions onto a PET film : → increases the surface energy of PET to 60 dynes. → increases adhesion. WHY PLASMA IS THE FUTURE FOR PRIMERS:.Read more
3 pages
MICA Primers for Ink Adhesion
mica-corp.com
https://mica-corp.com › Products
mica-corp.com
https://mica-corp.com › Products
Our water-based ink adhesion primers can help modify the surface of films, paper, foil, glass, and non-woven materials to improve ink receptivity.Read more
3M PPF and Vinyl Wrap Film Adhesion Promoting Primer
TMaxx USA
https://tmaxxusa.com › products › 3m-ppf-and-vinyl-wr...
TMaxx USA
https://tmaxxusa.com › products › 3m-ppf-and-vinyl-wr...
Special formula promotes adhesion to polyethylene, polypropylene, ABS, PET/PBT blends and other on difficult to stick to substrates.
$12.95In stock$14.34 delivery30-day returns
Water Based Primer for PET Films - SA-235 by Sinograce
Alibaba
https://www.alibaba.com › ... › Coating & Paint
Alibaba
https://www.alibaba.com › ... › Coating & Paint
SA-235 Water Based Primer for PET Films offers excellent adhesion, transparency, and durability. Ideal for untreated PET and ABS films. Shop now for quality ...
$4.63Out of stock