BOPP Film Hot-Melt Mixing Patent Granted to Huaruida Packaging, Targeting Improved Material Exchange Uniformity

According to information disclosed by the China National Intellectual Property Administration (CNIPA) on January 7, Huaruida Packaging Materials Co., Ltd. has secured a patent for "A BOPP Film Raw Material Mixing and Hot-Melt Device". The patent carries authorization announcement number CN121043297B and an authorization date of January 6, 2026. Its application publication number is CN121043297A, the application number is CN202511587453.3, and the publication date is also January 6, 2026, while the filing date is November 3, 2025. The inventors are Pan Xiaorong, Zhang Cunwen, Li Chengsheng, and Pan Junpeng. The patent agency is Wenzhou Renli Intellectual Property Agency (General Partnership), with Bian Guangwei as the patent agent, and the classification numbers are B29B13/02 and B29K23/00.

The patent abstract describes an invention in the field of plastic processing equipment, specifically a BOPP film raw material mixing and hot-melt device. The equipment comprises a heating kettle, an auger spiral ring, a first drive assembly, a fixed cylinder, and a movable cylinder. Inside the heating kettle, a hot-melt chamber is arranged with a vertical axis. The auger spiral ring is rotatably mounted within the hot-melt chamber, with its axis aligned with that of the chamber. Because two adjacent auger spiral rings rotate in opposite directions, the material is driven to circulate radially within the hot-melt chamber, which improves exchange uniformity in the radial direction. Additionally, the flow-guiding effect of the auger spiral rings causes the material to converge at the junction between adjacent rings, further enhancing material exchange uniformity.

Tianyancha data indicates that Huaruida Packaging Materials Co., Ltd. was established on January 12, 1970. Its legal representative is Pan Xiaohua, and it operates in the printing and reproduction of recording media industry. The company is classified as medium-sized, with registered capital and paid-in capital both at RMB 102.048 million. Its registered address is No. 359 Chengnan Avenue, Ruian Economic Development Zone, Ruian City, Wenzhou City, Zhejiang Province. The company has made external investments in 0 enterprises and has participated in 9 bidding projects. In terms of property information, it holds 2 trademark records, 54 patent records, and 10 administrative licenses.