silicone adjuvant

Domestic New Silicone Additive Breaks International Monopoly

A long-standing industrial defect called blooming has plagued the food and pharmaceutical packaging sectors for years, which has been successfully addressed by an enterprise based in Chengdu, China. The professional term for such white residue is slip agent bloom/exudate. To put it simply: manufacturers add lubricating slip additives into plastic films such as cling wrap and food bags to prevent film layers from sticking together and enable easy opening. Nevertheless, conventional slip additives feature poor stability; they gradually migrate outward from the plastic matrix to form white powder or greasy deposits on the surface. This problem may cause slippery sealing seams, mechanical jamming during production, and even contamination of packaged food and medicines.

The R&D team spent five years redesigning the molecular structure. This new silicone additive for films chemically anchors slip components to the plastic substrate via covalent bonds. Only the outermost molecular segments are exposed on the surface to deliver lubricity, while bulk additive molecules cannot migrate or exude, eliminating blooming at the source.

Core Technical Advantages
Zero exudation The slip additive only surfaces to provide lubrication without migrating into food or the external environment. Blooming is fully eliminated, greatly upgrading food safety compliance.
High-temperature thermal stability Benefiting from inherent properties of silicone materials, the additive maintains stable slip performance under high-temperature retort sterilization and does not impair film transparency.
Breaking global monopoly This domestic new additive matches the performance of international leading brands yet boasts more competitive pricing, ending the long-term monopoly of foreign suppliers in the high-end film additive market.

After four months of testing covering over 100 sample batches, the new silicone additive was officially finalized. “Such R&D efficiency is rare in this industry,” commented Xu Longping’s research group. The product achieves complete zero migration. Leveraging silicone’s outstanding heat resistance, it retains consistent surface slipperiness during retort processing without compromising film clarity. “Its performance is comparable to international premium products, while its price is 30% lower.”

Currently, application scenarios of this additive have expanded beyond food and pharmaceutical packaging to humanoid robots and low-altitude economy sectors. Precision protective films for robot joints and sensors must avoid component contamination by migrating residues; packaging films for drones require lightweight design and superior weather resistance. This additive prevents scratch damage caused by friction between parts inside packaging, and its hydrophobicity forms an extra protective barrier for films.