CALFILMGF

CALFILM GF – HIGH TEMPERATURE PRESSURE SENSITIVE TAPE
ADVANTAGES
Non-stick, disposable surface created by CALFILM GF film assure smooth
and sure release from component made molds and tool.

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This tape is designed to provide clean removal during masking operations
involving high temperatures .

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Masking edges of overlap seams in bonding process where excess adhesives
(“flash”) flows onto tape. Clean-up is complete upon tape removal.

TECHNICAL DATA SHEET
CALFILM GF
PROPERTIES

UNIT

METHOD

VALUES

Backing thickness

mm

ASTM D1000

0,051

Total thickness

mm

ASTM D1000

0,085

Width

mm

/

900

DIMENSIONAL

PHYSICAL - MECHANICAL
Tensile strength
Elongation at break
180° Peel Adhesion (25°C)

N/mm2
%

ISO 12086
ISO 527
ISO 12086
ISO 527

≥ 50
≥ 80

N/cm

ASTM D1000

3

°C

/

- 73 / + 260

KV/mm

ASTM D149

≥ 20

THERMAL
Service Temperature (min - max)

ELECTRICAL
Dielectric strength
(specimen 0,5 mm thick)
CD=Cross Direction

The data we are herewith providing are all based on laboratory testing and are proposed to technical designers as
possible and useful advice.
Deviations from the values hereabove indicated may occur, but they do not constitute themselves either detriment of
quality or reason for rejection.

Guarniflon CALFILM GF & FEP 2000 brochure eng. vers.01 10/2011 Guarniflon Spa accepts no responsibility for the completeness or accuracy of the information given. The layout, texts, images and graphics on this catalogue are protected by law.
This notably applies with regard to brand and patent rights, but also to all other forms of intellectual property rights. The reproduction or dissemination of individual catalogue contents, in whole or in part, and/or entire catalogue is prohibited.

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Guarniflon S.p.A.
Via T. Tasso, 12
24060 - Tagliuno di Castelli Calepio
Bergamo - Italy
Tel. +39.035.4494311
Fax +39.035.4494336
info@guarniflon.com
www.guarniflon.com
GPS: N45°38.2605, E009°53.5665

INTERNATIONAL SALES:
sales@guarniflon.com
fax: +39.035.4494306

UNI EN ISO 9001:2008

S.p.A.

GUARNIFLON FEP 2000 FILM

GUARNIFLON FEP 2000 FILM
FEP (fluorinated ethylene propylene) film provides the chemical and thermal resistance to withstand aggressive
environments, making it an excellent candidate for diaphragms, gaskets, protective linings, sample bags, and containers.
FEP film is a clear or pigmented film designed for release applications. The non-stick surface, chemical resistance, and
205°C (400°F) usage temperature make Guarniflon FEP an ideal release film for composite molding over a wide range of
resin systems. High elongation and a smooth film surface allow Guarniflon FEP to conform to complex mold contours and
produce a smooth part finish. Pigmented films increase visibility to speed removal from parts and mold.

Benefits/Features
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Service Temperature from -200°C (-392°F) to 205°C (400°F)
Exceptional Chemical resistance and electric properties
Superior anti- stick / release and low friction properties
Optically transparent and pigmented
Inert to outdoor exposure
High transmittance of ultraviolet and all but far Infrared
Available in etched (surface treated) form for bonding
Available in thicknesses from 0.051mm (0.002”) up to 3.00 mm (0,118”)
Widths up to 1.000 mm (39.3”)

FEP is available as follow

CALFILM GF – HIGH TEMPERATURE PRESSURE SENSITIVE TAPE

FEP film is a high temperature and high elongation release film which will conform easily to the most complex curvatures.
The film is capable of temperatures up to 205 °C. This film will release from most resin systems and will provide a glossy
finish when removed from the laminate.

There are always more components for different applications (Aerospace, Automotive, etc.) being made from composite
bonded lay-ups.
Calfilm GF is used as masking film in manufacturing of aircraft as protection film during bonding metal or composite parts:
the tape is applied to define the areas in which the adhesive must not rest .

Main Advantages :
• Most conformable film for complex contours at elevated temperatures due to:

• Higher elongation

• Conforms better under stress
• Successfully used up to 205°C (400°F)
• Chemically inert to all resin systems

The adhesive components used often generate an exothermic reaction and produce a T° increase during polymerization.
The advantage of CALFILM GF is that the material has a great resistance to high Temperatures
(exothermic reaction) and that during the tape releasing (after polymerization) it leaves no adhesive residues.
Calfilm is available as follow in transparent/brown color and also in blue and orange color.

FEP2000: TRANSPARENT
FEP2001: RED COLOR
FEP2002: BLACK COLOR

FEP application in Advanced Composite Material
Guarniflon FEP film is used in Vacuum Bagging/Autoclave moulding for the manufacturing of Advanced Composite parts
(E.g. Carbon Fibre parts), in particular in Aircraft/Aerospace industry and Automotive industry .

TECHNICAL DATA SHEET FEP 2000
PROPERTIES

UNIT

METHOD

VALUES - MOULDED

g/cm3

ASTM D792

2,14 - 2,17

/

ASTM D2240

≥ 55

PHYSICAL - MECHANICAL
Density
Hardness - Shore D
Tensile Strength - CD
Elongation at break - CD

Guarniflon FEP film is used (see Figure 1 ) as RELEASE FILM : a ply could be placed against the tool to act as a cushion
between tool and the part and ensure easy release of the laminate, another ply could be placed over the laminate and the
most important ply must be placed over the bleeder to prevent migration of excess resin.

BAGGING FILM

BLEEDER

VACUUM HOSE

PEEL PLY OR PERFORATED
RELEASE FILM
PRESSURE SENSITIVE TAPE

VACUUM VALVE
DAM

°C

/

- 200 / + 205

10-5(mm/mm)/ °C

Similar to
ASTM D696

8 - 10

Fusion temperature

°C

ASTM D4591

260 - 270

Thermal conductivity

W/mK

ASTM C177

0,20 - 0,24

F/

UL 94

V-0

% Vol

ASTM D2863

> 95

KV/mm

ASTM D149

≥ 20

SEALANT

/

ASTM D150

< 2,15

Ω · cm

ASTM D257

1016 - 1018

Figure 1

Flammability

FLASH TAPE

RELEASE PLY OR RELEASE FILM

N/mm2

ELECTRICAL
Dielectric strength (specimen 0,25
mm thick)

TOOL

≥ 350

THERMAL

LOI index (Limited Oxygen Index)
LAMINATE

≥ 25

550 - 650

Service Temperature ( min - max )

BREATHER

%

ISO 12086
ISO 527
ISO 12086
ISO 527
ASTM D790

Flexural modulus

Thermal expansion coefficient
( linear ) 25 - 100°C

FEP 2000 RELEASE FILM

N/mm2

Dielectric Constant (1 MHz)
Volume Resistivity
CD=Cross Direction

The data we are herewith providing are all based on laboratory testing and are proposed to technical designers as possible and useful advice.
Deviations from the values hereabove indicated may occur, but they do not constitute themselves either detriment of quality or reason for rejection.

HIGH MODULUS & PRESSURE SENSITIVE TAPE
THICKNESS
WIDTH

2 mil

0,051 mm

Roll: 35 in max - Tape on request

Roll: 900 mm max - Tape on request

35 yd

33 m

LENGTH
ADHESIVE

Other thicknesses available on request.

Silicone