US 11,904,519 B2
Extrusion equipment
Chia-Yu Yu, Taichung (TW); Li-Kai Lin, Taichung (TW); Chia-Hsin Tung, Taichung (TW); and Wei-Cheng Chen, Taichung (TW)
Assigned to Plastics Industry Development Center, Taichung (TW)
Filed by Plastics Industry Development Center, Taichung (TW)
Filed on Apr. 7, 2022, as Appl. No. 17/715,244.
Claims priority of application No. 110147696 (TW), filed on Dec. 20, 2021.
Prior Publication US 2023/0191681 A1, Jun. 22, 2023
Int. Cl. B29C 70/52 (2006.01); B29C 48/285 (2019.01); B29C 48/685 (2019.01); B29C 48/80 (2019.01)
CPC B29C 48/2886 (2019.02) [B29C 48/685 (2019.02); B29C 48/802 (2019.02)] 10 Claims
OG exemplary drawing
 
1. An extrusion equipment, for processing a fibre, comprising a decompression section and a melt tank arranged in a vertical direction along with gravity, wherein:
the decompression section comprises a decompression section feeding port at top and a decompression section discharging port on a bottom; a decompression cavity is defined between the decompression section feeding port and the decompression section discharging port; the decompression cavity is connected with a vacuum device; at least a pair of rubber wheels is provided at an opening of the decompression section feeding port;
the melt tank is connected below the decompression section discharging port; the melt tank includes a melt tank fibre feeding port, a melt tank resin feeding port, a melt tank impregnation section, a melt tank control section, a melt tank fibre discharging port, and a melt tank cavity defined at least by the melt tank control section and the melt tank impregnation section, the melt tank cavity in fluid connection with the metal tank resin feeding port, the metal tank resin feeding port, and the melt tank fibre discharging port; wherein:
the decompression section discharge port is followed by the melt tank fibre feeding port, the melt tank resin feeding port is arranged at a lateral portion of the melt tank as an opening and is located below the melt tank fibre feeding port above the melt tank impregnation section; the melt tank is applied to feed a thermoplastic resin via melt tank resin feeding port;
the melt tank impregnation section includes an impregnation section channel extending in a vertical direction arranging with two sides of concaved curvy surfaces or multiple protruded bulks; all tips of the concaved curvy surface or multiple protruded bulks are facing each other with a distance without touching; a distance of all tips of each concaved curvy surface or multiple protruded bulks facing each other gradually decreases from top to bottom; and
at a bottom of the impregnation section channel is connected to the melt tank control section with a control section channel; the control section channel exhibits a gradual decreased tapered shape; and the melt tank fibre discharging port is disposed at a bottom of the control section channel.