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Oracal 641 Self-Adhesive Calendered Film [Economy Cal]

Oracal 641 Self-Adhesive Calendered Film [Economy Cal]

Product Description

Oracal 641 Economy Cal is a self-adhesive calendered (glossy) film used for plotting and printing. Applications include short to medium-term indoor and outdoor lettering, marking and decoration as well as for POP and promotional display signage (not recommended for vehicle graphics). Durability is 4 years for the black and white color and 3 years for transparent and other colors. The release liner on the tape is custom silicone coated paper which has special release characteristics that provide excellent weeding and release values. Oracal 641 is thermal transfer print compatible and is available in 59 vivid colors plus transparent. Made in the U.S.

Application Instructions

  1. Prepare the surface by making sure it is fry and free of any debris or grease, oil, wax, or other cleaning solvents.
  2. Remove the paper release liner by pulling it away from the film tape.
  3. Apply the decal placing it on the substrate it is being applied to and then apply pressure by rubbing the tape down.
  4. Remove the clear film transfer tape by slowly pulling away at a 180° angle.


Technical Information

Oracal 641 Self-Adhesive Calendered Film
  • Standards Met: ASTM E 84-07 Class “A”
  • Carrier/Backing: calendered (glossy) film
  • Adhesive: clear, water-based   How are adhesives different?
  • Release Liner: 84# silicone-coated paper
  • Thickness: 2.75 mils (carrier)   What is mil thickness?
  • Adhesion: 59.2 ounces per inch (to stainless steel test panel)
  • Service/Operating Temperature: -40°F to 176°F
  • Application Temperature: 50°F (minimum)
  • Elongation: 130%
  • Paintable: Yes
  • Core: 3" diameter
Note: Specifications are those given by manufacturers and are not tested for accuracy.

Alert Roll Sizes/Widths

Please note that tape rolls are NOT guaranteed to be splice-free. Tape rolls are typically cut to standard tape industry metric-cut sizes - or approx 5% narrower than the nominal size (i.e. 24mm per 1-inch of nominal width ordered).

Please contact us to inquire about pricing for full-cut widths (e.g. a 6 inch roll cut to exactly 152mm instead of 144mm).

Download Datasheets

The following downloads are available for this product:

Download Technical Data Sheet

Question & Answers

User Reviews

Oracal 641 Self-Adhesive Calendered Film [Economy Cal]
Made in the USA
hot melt rubber (synthetic)
Offers the widest range of application flexibility available. Exhibits excellent processing performance whether manually or automatically applied. Has superior tensile strength, adhesion properties and holding force which ensures consistent, reliable seals. Hot melt adhesive will bond faster to a surface which is referred to as quick-grab or quick-stick. It typically has higher tack (will feel stickier to the touch), but is also softer. It has lower heat resistance, shear resistance, and sometimes UV resistance than an acrylic adhesive. NOTE: it is called hot melt because the adhesive is applied hot by the manufacturer and then hardens as it cools (you do not need to apply heat to the tape yourself).
natural rubber
Properties are similar to that of hot melt rubber, but natural rubber often holds where other adhesives won't (recycled fibers, dust, cold, heat and heavy loads). It provides good overall adhesion and moisture resistance.
Offer excellent performance, especially for applications in temperatures less than 40°F and greater then 120°F. It provides excellent clarity, has high shear strength, is usually more permanent/durable even when exposed to moisture, and it ages well over extended periods in fluorescent and sunlight. Since it remains clear for the life of the application and does not yellow over time it is ideal for applications such as sealing white cartons. While it has good initial adhesion it does take 24-48 hours to cure and to achieve its maximum bond strength (has gradual adhesion buildup). Another difference between hot melt rubber and acrylic adhesive is if you fold tape over making the two adhesive sides touch the acrylic adhesive will remain attached to the carrier (e.g. paper, film) while a hot melt adhesive will stick to itself and pull off of the carrier. It is the best choice for clarity, UV resistance and aging characteristics.
Is great for extreme temperature applications since silicone adhesive can work in continuous operating temperatures from -100°F to 500°F. They also exhibit good chemical resistance, retain electrical properties, and remove cleanly with little or no residue.
zinc oxide
Zinc oxide based adhesive formula is a skin-friendly adhesive which is commonly used on sports medicine tapes.
Thickness, AKA caliper or gauge, refers to the distance from one surface of a tape backing, or adhesive, to the other.
1 mil = 1/1000 of an inch
Examples: 1/16 inch = 62.5 mils; 1/32 inch = 31.25 mils
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