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Dureflex® A4700

Dureflex® A4700 is a self-priming, polyether based, low modulus aliphatic thermoplastic polyurethane film/sheet product.

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About

Product Types

No data available

Material

Plastics
Clear
Coatings, paints & inks
Thermally resistant
Films
Weather resistant, UV protective, Flexible, Durable, Transparent

General Characterization

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Storage Conditions

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Sampling

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Packaging Type

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Technical Properties & Datasheets

Product description

Dureflex® A4700 is a self-priming, polyether based, low modulus aliphatic thermoplastic polyurethane film/sheet product.

Applications

Dureflex® A4700 was developed as part of a series of optical grade adhesive films. Dureflex® A4700 was specifically developed for the lamination of optically transparent glass-clad polycarbonate. Dureflex® A4700 is also used in acrylic composites CAB and other compatible thermoplastics.

Dureflex® A4700 can be supplied from 15 to 50 mils (0.38 to 1.27 mm) with a specially developed film finish to allow for evacuation of trapped air during press or autoclave bonding. Dureflex® A4700 is supplied with a protective polyethylene interleaf to prevent film-to-film roll blocking, and should be incorporated where a "primerless" lamination is required. As with any product, use of Dureflex® A4700 in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability.

Potential Applications
•        Prison containment glazing
•        Retail kiosks
•        Hurricane / Vandals glazing
•        Zoos
•        Computer screens
•        Ballistic / Blast / Intrusion
•        Vehicle armoring
•        Thermoforming 
•        Residential glazing
•        Government / Military

Typical Values

 Typical Physical Properties*

  ASTM Test Method Value, U.S. Units Value, S.I. Units
Specific Gravity D-792 1.07
Durometer (Shore A) D-2240 78
Ultimate Tensile Strength D-882 5,500 psi 37.9 MPa
Ultimate Elongation D-882 500% 500%
100% Modulus (MD/CD Avg.) D-882 500 psi 3.4MPa
300% Modulus (MD/CD Avg.) D-882 1,500 psi 10.3 MPa
Tear Resistance (MD/CD Avg.) D-1004 250 pli 43.8 kN/m
Min. Softening Point (TMA onset) E-2347 169ºF 76ºC
Max. Softening Point (TMA endpoint) E-2347 212ºF 100ºC
Appearance   Optically Clear

* These items are provided as general information only. They are approximate values and are not part of the product specifications.

Custom Manufacturing Capabilities

  Range of Capabilities, U.S. Units Range of Capabilities, S.I. Units
Self-Priming All Grades
Film Finish Available Matte / Emboss
Interleaf Polyethylene
Gauge Available 15 to 50 mil 380 to 1270 micron
Widths Available 20 to 60 in 510 to 1525 mm
Clean Room Production All Grades

** Restriction may apply to certain film grades.

Health and Safety Information

Before working with this product, you must read and become familiar with the available information regarding its risks, proper use, and safe handling. This information is provided in various formats, including the current Safety Data Sheet (SDS) and product label. SDS can be accessed via the following link:

Safety Data Sheets (SDS) for Covestro products | Covestro

For further questions, please use the contact information provided on this technical data sheet.

Disclaimer

Responsibility and Liability

The use of Covestro products, technical assistance, and information (regardless of how provided) is outside Covestro’s control and is solely the responsibility of the customer. The customer must conduct adequate testing to determine the suitability of products for its intended use, including but not limited to technical, health, safety, and environmental aspects. Unless otherwise agreed in writing, all products are sold exclusively under Covestro’s standard conditions of sale, which prevail in case of conflict and are available upon request.
The terms and conditions of sale and delivery are available via the following link:

https://order.covestro.com/covestrostorefront/saleConditions

All information is provided “as is” without warranties, express or implied, including merchantability or fitness for a particular purpose, and is subject to change without notice. To the maximum extent permitted by law, Covestro disclaims, and the customer assumes all liability for losses, damages, or claims arising out of use of Covestro products, technical assistance, or information. Any statement or recommendation not expressly contained in Covestro documentation is unauthorized and shall not bind Covestro. Nothing herein shall be construed as encouraging or recommending the use of any product in conflict with any claim of any patent. No license is implied or in fact granted under the claims of any patent.

Restrictions on Regulated Applications

This product is not intended for use in regulated applications such as agriculture, cosmetics, drinking water contact, food contact, medical products (e.g., medical devices), toys, or similar uses subject to specific regulatory requirements. Prior written approval from Covestro is required before this product may be used in any regulated application. The customer is solely responsible for ensuring compliance with all applicable laws and determining product suitability. Covestro disclaims all liability and warranties for unauthorized regulated uses.

Typical Value

These values are provided as typical data only and do not constitute binding specifications or warranted performance, unless explicitly agreed by Covestro in writing. Performance may vary depending on factors including, but not limited to, mold/die, processing conditions and coloring/pigmentation. Unless otherwise stated, values are based on standardized test specimens at room temperature.

Sample

Samples provided by Covestro are intended solely for evaluation and testing purposes by the customer and may not be used in commercial applications, resold, transferred to third parties (except qualified testing service providers acting on behalf of the customer), reverse engineered, modified, or used in any manner not explicitly authorized in writing by Covestro. Samples are provided ‘as-is’ without any warranties, express or implied, including fitness for a particular purpose. Customers are solely responsible for ensuring safe handling, regulatory compliance, and suitability of the material for their intended evaluations. Covestro disclaims all liability for damages or losses arising from the use of samples.

Contact Information

Please use our contact form or contact us directly by sending an e-mail to technical-datasheets@cx.covestro.com .

Downloads

Technical Data Sheet
Safety Data Sheet
No direct download available, please visit www.productsafetyfirst.covestro.com

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