As the core material of the mask, the performance of the melt blown PP material determines the quality of the mask. China has issued the national standard GB/T30923-2014 in 2014, which specifies the relevant performance requirements of the polypropylene (PP) melt blown special material.
Product Scope:
Polypropylene (PP) Melt Blown Special Material
Test Cycle:
7 working days
Test Items:
| Test Item |
Cycle |
Test Standard |
| Melt mass-flow rate |
7 days |
GB/T 30923-2014 |
| Ash content |
| Appearance |
| Volatile matter |
| Di-tert-butyl peroxide residual amount |
| Molecular weight distribution |
| Qualitative analysis of the composition |
GB/ T 6040-2002 |
| Characteristics of melting and crystallization |
GB/T 19466-2004 |
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