Product Bulletin 3670
Release C, Effective January, 2001
Scotchcal™ Film 3670
Description
Product Line
Advantages
• Dimensionally-stable, durable, vinyl film
• Withstands severe weather and handling
conditions encountered by commercial and
industrial graphics
• Extremely aggressive, permanent, pressuresensitive adhesive
• Good adhesion to polyolefin substrates; other
plastic substrates may be used on a customer
test-and-approve basis
• Black-pigmented adhesive for excellent hiding
power
3670
Applications and End Uses
3M™ Scotchcal™ Film 3670 are durable, glossy
vinyl films intended for the production of attractive
emblems, labels, markings and striping that will
withstand severe weather and handling conditions.
when used with the listed Compatible Products in
the following applications. These applications are
warranted by the 3M™ MCS™ Warranty.
• Use for multicolor graphics including labels,
emblems, striping
Limitations of End Uses
We do not normally warrant other applications, but
please contact us to discuss your needs or let us
suggest other 3M products.
Specifically, 3M does not warrant this film for the
following:
• Applications to corrugated or riveted surfaces
• Graphics regularly subjected to gasoline vapors
or spillage
• Maximum temperature limit in use is 70°C
Commercial Graphics Division products are not
tested against automotive manufacturer's
specifications and are therefore not warranted for
use in fabricating graphics for automotive OEMs.
Compatible Products
•
3M™ Screen Printing Ink Series 1900
•
•
3M™ Screen Printing Ink Series 9700 UV
3MTM Screen Print Clear 1955abc
3M™ Edge Sealer 3950
•
Selected 3M™ application tapes
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Product Bulletin PB_3670-EU-C-Jan01
White
Characteristics
Property
Description
Colour
3670 white
Film
0.05 mm opaque vinyl
Thickness (film
plus adhesive)
0.08 to 0.10 mm
Adhesive type
Pressure sensitive
Adhesive color Black pigmented adhesive
White Kraft Paper 120g/m²
Liner
Application
surface
Flat or simple curves
Minimum
application
temperature
4°C
Effective Performance Life
When printed and applied in accordance with 3M
recommended procedures, the following performance
typically may be expected. Performance statements are
based upon representative values obtained from
exposure tests conducted throughout Europe. Actual
performance will be determined by substrate selection
and preparation, maintenance of the marking and
exposure conditions.
Warranted Durability
Cutting
Zone 1
Zone 2
Zone 3
Unprinted
3
3
2
Printed with Ink
Series 1900
3
3
2
Printed with Ink
Series 9700 UV
3
3
2
The warranties are given in years
1. The warranty applies to films that are exposed
at a vertical angle (defined as 90°+/-10°). A
significant decrease in durability may be
experienced if films are exposed other than
vertical. Such non-vertical applications must be
on a test and approval basis to determine
acceptability. 3M does not warrant non-vertical
exposures.
2. Unprinted 3M™ Scotchcal™ Film 3670 white
has a tendency to chalk upon exterior exposure.
Film intended for use on signs where cleaning is
not practical must be clear coated with 3M™
Screen Print Clear 1920DR or 9720 UV.
When using any equipment, always follow the
manufacturer's instructions for safe operation.
Recommended cutting tools are:
•
•
•
•
•
Band sawing
Hand cut
Guillotine
Cold steel-rule
Hot steel-rule
Premasking
This film is not recommended for use in paint-in
systems.
Conditions
3M Brand Application
Tapes
Unprinted
General Premasking
SCPM-19
General Prespacing
SCPS-100
Series 1900 Inks
General Premasking
SCPS-100
General Prespacing
SCPS-2
Exceptions from the above:
Series 9700 UV
• Translucent or transparent substrates in outdoor
applications; ultraviolet light can cause
premature failure of the adhesive.
General Premasking
SCPM-44X
General Prespacing
SCPS-2
Fabrication
Application
This bulletin does not contain detailed printing,
processing or application procedures for the subject
products. The appropriate Instruction Bulletin(s)
may be obtained by contacting your 3M sales
representative or 3M Technical Service.
3M™ Scotchcal™ Film 3670 is not positionable.
Apply it like any other pressure-sensitive film. The
minimum air and substrate application temperature is
4°C (40°F). Although there is no maximum application
temperature, the adhesive becomes more aggressive as
the surface temperature increases. Refer to Instruction
Bulletin 5.5 for more details.
Screen Printing Inks
Maintenance and Cleaning
3MTM Screen Printing Ink Series 1900
3MTM Screen Printing Ink Series 9700 UV
Overprint Clear
For stated performance, screen printing inks must
be clear coated as follows:
Ink Series 1900:
Clear Gloss 1920DR
Clear Matte 1930
Ink Series 9700 UV:
Clear Gloss 9720
Clear Matte 9730
Clear Coat 1955abc
Glossy 2-component clear
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Product Bulletin PB_3670-EU-C-Jan01
Use a cleaner designed for high-quality painted
surfaces. The cleaner must be wet, non-abrasive,
without strong solvents, and have a pH value between
3 and 11 (neither strongly acidic nor strongly alkaline.)
Removal
Film 3670 is not a removable film. Due to its very
agressive adhesive the removal requires the use of a
chemical remover system.
Shelf Life, Shipping and
Storage
Physical Properties
Property
Metric Units
Follow these guidelines to store and ship 3M™
Scotchcal™ Film 3670 and the processed graphics.
Thickness (ISO 4593)
0.08mm - 0.10mm
Tensile Strength (ISO
1184-1983)
22 N/25mm min at
23°C
Elongation (ISO 11841983)
>50% at 23°C
Dimensional Stability
(FTM14)
< 0.1mm
Temperature Range
-50°C to +70°C
Reverse Impact
Resistance
No cracking at -30°C
No cracking at 23°C
• Unprocessed film has a shelf life of 2 years after
receipt from 3M. Processed film has a shelf life
of 1 year. However, the total shelf life of a
graphic before and after processing cannot
exceed 2 years.
• Store the film in a clean, dry area in the original
container.
• Store the film out of direct sunlight and at less
than 27°C (80°F).
• Ship the finished graphic lying flat or roll the
graphic. For rolling, roll film side out onto a
core that is 13 cm (5 inches) in diameter or
larger. These methods help prevent the liner and
premask from wrinkling or popping off.
Adhesion (FTM1)
Substrate
Metric Units
(N/25mm)
Anodised Aluminium
Product Data
Values given are typical and are not for use in
specifications. If a custom specification is desired,
a custom specification will be prepared upon
request submitted through a 3M sales
representative. The data given below is for
unprinted film or film which has been printed and
clear coated.
22
Polyethylene (HD)
22
These adhesion values are 24 hours after appliation
Note: ISO refers to standards of the International
Standards Organisation. FTM (Fimat Test Methods)
refers to test methods listed by Fimat, the Association
of European Tape Manufacturers.
Chemical Resistance
• Resists mild acids, alkalis and salts
• Excellent water resistance
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Product Bulletin PB_3670-EU-C-Jan01
Important Notice
For Further Assistance
This bulletin provides technical information only.
All questions of warranty and liability relating to
this product are governed by the terms and
conditions of the sale, subject, where applicable, to
the prevailing law.
Before using, the user must determine the
suitability of the product for its required or
intended use, and the user assumes all risk and
liability whatsoever in connection therewith.
For help on specific questions relating to 3M™
Scotchcal™ Film 3670, or any other 3M Commercial
Graphics Division products, contact your local 3M
Technical Service representative or
Related 3M Literature
Listed below is related 3M Technical Literature
which may be of interest:
Subject
Bulletin No.
Product Bulletins
Screen Printing Ink Series 1900
1900
Screen Printing Ink Series 9700 UV
9700
Instruction Bulletins
Design of Markings
2.1
Screen Printing with series 1900 line
inks
3.12
Screen Printing with series 1900
4-colour process inks
3.11
Screen Printing with series 9700 UV
line inks
3.4
Screen Printing with series 9700 UV
4-colour process inks
3.13
Screen Printing with series 9700 UV
metallic line inks
3.4.1
Scoring and Cutting
4.1
Premasking and Prespacing
4.3
Surface Preparation
5.1
Application Procedures
5.5
Storage, Maintenance and Removal
6.5
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Product Bulletin PB_3670-EU-C-Jan01
3M Laboratories (Europe)
Zweigniederlassung der 3M Deutschland GmbH
- Commercial Graphics Carl-Schurz-Strasse 1
D - 41453 Neuss
Germany
Phone: +49 (0) 2131 14-3500
Fax: +49 (0) 2131 14-2377
The use of Trademark signs and brand names in this
bulletin is based upon US standards. These standards
may vary from country to country outside the U.S.A.