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| We are proud of our UL Certification, which confirms our ability to trace any bobbin or component back to its source of raw material. We can also detail where every lot of raw material was used in our manufacturing process. You can count on Plasti-Coil for quality assurance through every step of the production process. |
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| Definitions of the Often-Used Terms in the Coil industry UL 94 Flammability Classifications |
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| Relative Thermal Index (RTI): |
Temperature Index (TI): |
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| 94 5VA: (bars and plaques) |
94 V-1: (Vertical Burning)* |
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| 1. No flaming or glowing - 60 seconds after the last flame application. 2. No ignition of the cotton by dripping particles. 3. No holes in plaques. A one-time retesting of a set of test specimens is allowed if only one testbar fails. |
1. Maximum flaming time per specimen per flame application is 30 seconds. 2. Maximum burning time, total of 5 specimens, is 250 seconds. 3. No ignition of cotton by dripping particle 4. Maximum afterglow time, per specimen is 60 seconds. 5. No afterglow ignition of cotton. |
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| A numerical rating, expressed in degrees Celsius, which results from long-term thermal aging and the evaluation of a specific property. The value assigned is based on a comparison of a new material against a known or control material. |
(ASTM definition): A number which permits comparison of the temperature/time characteristics of an electrical insulating material, or a simple combination of materials, based on the temperature in degrees Celsius. This is obtained by extrapolating the Arrhenius plot of life versus temperature to a specified time, usually 20,000 hours. |
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| 94 5VB: (bars and plaques) |
94 V-2: (Vertical Burning)* |
Thermal Class: A group designation based on the RTI for a combination of materials. |
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| 1. No flaming or glowing - 60 seconds after the last flame application. 2. No ignition of the cotton by dripping particles. 3. A hole in the plaque is acceptable. A one-time retesting of a set of test specimens is allowed if only one testbar fails. |
1. Maximum flaming time per specimen per flame application is 30 seconds. 2. Maximum burning time, total of 5 specimens, is 250 seconds. 3. Ignition of cotton by dripping particle 4. Maximum afterglow time, per specimen is 60 seconds. 5. Afterglow ignition of cotton. |
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| Amorphous: The molecular chains have NO distinct uniformity or pattern. The chains are farther apart than in a crystalline resin. • Benefits: Low in mold shrinkage • How Established: Low mold temperatures |
Crystalline: Refers to the molecular structure of the resin (polymer). The degree of crystallinity refers to uniformity and closeness of the molecular chains forming the polymer and resulting from the formation of solid crystals with a definite geometric pattern. • Benefits: Dimensional stability, low post mold shrinkage • How Established: High mold temperatures |
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| 94 V-O: (Vertical Burning)* |
94 HB: (Horizontal Burn) |
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| UL is not affiliated with plasti-coil, inc. and does not endorse the Web site. |
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| 1. Maximum flaming time per specimen per flame application is 10 seconds. 2. Maximum burning time, total of 5 specimens, is 50 seconds. 3. No ignition of cotton by dripping particle 4. Maximum afterglow time, per specimen is 30 seconds. 5. No afterglow ignition of cotton. |
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| Hong Kong Plasti-Coil (Asia) Co., Ltd. Unit 1402, 14/F, Crocodile House I 50 Connaught Road C, Central Hong Kong Tel: 852-2110-8193 Fax: 852-2110-8608 Email: sales@plasticoil.com.hk |
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| CHINA Foshan Shunde Plasti-Coil Co., Ltd. Block C, 1 Jie Fang Road, Xi Chong Countryside, Lun Jiao, Shunde, Foshan, China (Post Code: 528308) Tel: 86-757-2733-6673 Fax: 86-757-2733-6687 Email: factory@plasticoil.com.hk |
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| USA Plasti-Coil, Inc. 901 Geneva Parkway, Lake Geneva, WI53147, U.S.A. Tel: 1-262-249-5620 Fax: 1-262-249-5630 Email: info@plasticoil.com QS-9000 Certified |
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| [Engineering Polymers] [Material Comparison] [UL/Industry Terminology] [Special Projects Team] [Quality] [Value Added Services] [Quote Request Form] [Terms & Conditions] [Contact Us USA] [Home Page] [Contact Us Hong Kong] [What's New] [Application Profiles] [QS9000 Certificate] [PlastiCoil Tehnical Services] |
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| For comments on this site send e-mail to info@plasticoil.com ©Copyright plasti-coil, inc. 1997, 1998, 2000, 2004, 2005 |
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| The HB rating is given if the burn rate, measured between the two marks, does not exceed: • 40mm/min. for 3.0mm testbar thickness • 75mm/min. for < 3.0mm testbar thickness If the testbar stops burning before reaching the 100mm mark. |
| * A one-time retesting of a set of five testbars is allowed if only one testbar exceeds the single burn time or if the total burn time of one set exceeds the required value by not more than five seconds. (V0O = 55 sec.; V-1 and V-2 = 255 sec. |