OB-1 Optical Brightener helps increase the whiteness of products when producing thin films like PE, PP, especially when the raw material is Recycled Plastic.

Technical Specifications of OB-1 Additive
| Appearance | Pellet form |
| Melting Point | 120oC |
| Usage Ratio | 0.1~0.5% |
| Packaging | 25kg/bag |
| Storage | Cool, dry place, away from direct sunlight |
Characteristics of Optical Brightener
OB-1 additive dissolves into plastic during the production process, helping products maintain their whiteness and brightness longer compared to other bleaching methods.
OB-1 additive belongs to the fluorescent agent category, absorbing ultraviolet light and emitting blue light. The blue light reflected from the product to the human eye masks the orange-red area, making the product appear whiter.
Applications
Optical brightener can be used for common plastics such as PE, PP, PS, etc.
Used in manufacturing industries: film blowing, foam bags, woven PP bags, non-woven fabric bags, etc.
You can refer to other additive products HERE




