AsahiKASEI

Flame retardancy

SunForce BE grade is a flame-retardant material. Common plastics burn easily when they come into contact with fire. Moreover, foam, which is generally made from common plastics, contains air within bubbles, making it even more flammable. However, SunForce is foamed mPPE; which is inherently a flame-retardant material.
*There is a certification range for "flame retardancy."

A foam with good flame retardancy

※Image is for illustration purposes

The UL standard is generally used as the point of reference. It is a set of test standards from UL LLC, a private third-party safety science organization in the US, and is also registered in many ANSI standards. It has become the de facto safety standard for electrical equipment etc. SunForce BE is certified as V-0, under Vertical Burning Test of UL-94 (Table 1 below). The internal components of electronic devices, office equipment, battery components, medical devices, etc. may require flame retardancy equivalent to "V-0" or "V-1" rated materials, and SunForce BE grade is suitable for such applications.

Test Details Standards
20mm Vertical Burning Test V-0、V-1、V-2
125mm(5 inch) Vertical
Burning Test
5VA、5VB
Horizontal Burning Test HB
Horizontal Burning foamed
material Test
HF-1、HF-2、HBF
Thin Material Vertical Burning Test VTM-0、VTM-1、VTM-2

The registered standards also stipulate the thickness of the material as shown below, so please take this into consideration when designing.

Certification range

SunForce BE1 Certified thickness = 3mm or over
SunForce BE2 Certified thickness = 5mm or over