The small round-opening straight-in straight-out filling machine is designed for bottles with narrow round necks. It adopts a linear conveying layout, where containers travel along a straight track to complete feeding, filling and discharging. With a streamlined layout, it is commonly used for small-neck bottle packaging of beverages, liquid reagents and trial-size personal care items. The linear bottle path simplifies connection with upstream and downstream conveyors, fitting workshops with limited installation space.
The machine works through the coordination of sensors and filling nozzles. Once a bottle reaches the filling station, dispensing starts automatically, and the filled container continues forward along the straight track after completion. Filling pipelines and wetted parts can be made of stainless steel with smooth inner surfaces. These components are easy to disassemble and rinse, reducing material adhesion and residue to meet hygienic standards, and simplifying cleaning between different products. The filling assembly can be adjusted vertically to match bottle heights and neck positions for various narrow round-opening containers.
Different from rotary filling models, this linear design features straightforward operation and simple setup for operators. The compact footprint saves floor space. It can operate as a standalone unit or connect with bottle sorting, capping and labeling machines to form a short packaging line. It is better suited for free-flowing liquids and not recommended for media with large solid particles.
Routine maintenance includes cleaning and inspecting filling nozzles, discharge pipes and sensors. Operators remove dried deposits around outlets and check seals to prevent dripping. Before selection, users should verify neck size, bottle shape and material compatibility, and arrange placement according to workshop conveying direction. Proper setup ensures smooth bottle transit and consistent filling performance for narrow round-neck packaging applications.
