tesa® 4950 - LSE Filmic Mounting Tape

100µm LSE double sided transparent PET film tape

Sustainable Aspects

90% PCR PET in the backing
Responsibly sourced paper liner (certified).

Product Features

LSE-Optimized Adhesion: Bonds reliably to PP, PE, and EPDM, no primer needed.
High Shear Strength: Holds strong under stress and heat for long-term durability.
Dimensional Stability: PET backing ensures clean handling and precise die-cuts.

All product features

Product description

tesa® 4950 is a high-performance, double-sided transparent PET film tape designed for reliable bonding on low surface energy (LSE) substrates. With a total thickness of 100µm and a 12µm PET backing made from 90% post-consumer recycled content, it combines sustainability with technical excellence. The tackified acrylic adhesive ensures strong initial tack and superior shear strength, even under demanding environmental conditions.

Product details and specifications

Product Features

LSE-Optimized Adhesion: Bonds reliably to PP, PE, and EPDM, no primer needed.
High Shear Strength: Holds strong under stress and heat for long-term durability.
Dimensional Stability: PET backing ensures clean handling and precise die-cuts.
Thermal Resistance: Withstands short-term exposure up to 200°C.
Low VOC: Tested to VDA 278 for cleaner indoor air.
UL Certification: In accordance with UL standard 969. UL file: MH 18055

Application Fields

Versatile bonding solution for a wide range of demanding industrial applications
Enables primerless adhesion to low surface energy (LSE) substrates such as PP, PE, and EPDM
Ideal for long-term mounting on hard-to-bond materials, including gaskets and molded components
For industrial assembly where clean aesthetics, dimensional stability, and transparent bonding are critical.

Sustainable Aspects

90% PCR PET in the backing
Responsibly sourced paper liner (certified).

Backing material	Post consumer recycled PET
Color	transparent
Colour of liner	brown/blue logo
Thickness of liner	69 µm
Total thickness	100
Type of adhesive	tackified acrylic
Weight of liner	80 g/m²

Elongation at break	50 %
Tensile strength	20
Temperature resistance short term	200 °C
Softener resistance	very good
Static shear resistance at 40°C	very good
Static shear resistance at 23°C	very good
Temperature resistance long term	100 °C
Tack	very good
Chemical resistance	good
Humidity resistance	very good
Temperature resistance min.	-40 °C
Ageing resistance (UV)	good
Static shear resistance at 70°C	very good

Adhesion to PC (initial)	7 N/cm
Adhesion to PE (initial)	5 N/cm
Adhesion to PP (initial)	6.6 N/cm
Adhesion to Steel (initial)	7.5 N/cm

Liner variants:

PV04: white PE-coated liner (126µm; 126 g/m²)
PV20: branded brown glassine paper (69μm; 80g/m²).

Low VOC – measured according to VDA 278 analysis, tesa® 4950 does not contain any single substances restricted by the drafted GB regulations (China).

tesa® products prove their impressive quality day in, day out in demanding conditions and are regularly subjected to strict controls. All technical information and data above mentioned are provided to the best of our knowledge on the basis of our practical experience. They shall be considered as average values and are not appropriate for a specification. Therefore tesa SE can make no warranties, expressed or implied, including, but not limited to any implied warranty of merchantability or fitness for a particular purpose. The user is responsible for determining whether the tesa® product is fit for a particular purpose and suitable for the user’s method of application. If you are in any doubt, our technical staff will be glad to support you.

Downloads

Download the files below for more technical details and information on this product.

Product information_tesa® 04950_en-SG 105.9 kB

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Product comparison

Name of product	tesa® 4950 - LSE Filmic Mounting Tape	tesa® 4965 Original Next Gen	tesa® 51865 Next Gen - Team 4965 Differential	tesa® flameXtinct 45051	tesa® 64620	tesa® 4965	tesa® 64624	tesa® 4963	tesa® 6917	tesa® 4917	tesa® flameXtinct 45020 Differential	tesa® 64621 Industry
Total thickness	100	205 µm	165 µm	200 µm	185 µm	100 µm	175 µm	107 µm	90	90 µm	190 µm	90 µm
Type of adhesive	tackified acrylic	biomass-balanced tackified acrylic	tackified acrylic	FR acrylic	synthetic rubber	tackified acrylic	synthetic rubber	natural rubber	tackified acrylic	tackified acrylic	FR acrylic	synthetic rubber
Backing material	Post consumer recycled PET	Post consumer recycled PET	PET film	PET	PP film	Post consumer recycled PET	PP film	PVC film	PP film	PP film	PET	PP film
Adhesion to Steel (initial)	7.5 N/cm	11.5 N/cm	9.6 N/cm	9 N/cm	9.5 N/cm	7 N/cm	12 N/cm	5.9 N/cm	8.2 N/cm	8.2 N/cm	4 N/cm	10 N/cm
Color	transparent	transparent	transparent	transparent	white	transparent	transparent	transparent	transparent	transparent	transparent	transparent