The filling line is generally a linked production line composed of several stand-alone machines with different functions to achieve the purpose of manufacturing or processing a certain product. It is an electromechanical equipment to reduce manpower, improve work flow and increase productivity. In a small scope, it is a filling line for a certain product. According to the characteristics of the filling materials, it can be divided into: liquid filling line, granule filling line, granule filling line, semi-fluid filling line, etc. According to the level of automation technology, it can be divided into automatic filling line and fully automatic filling line.

        Liquid filling lines are generally used for cleaning, filling, capping, labeling, barcoding, etc. of various liquid, paste, semi-fluid and other raw materials.

        China's liquid filling lines are generally divided into three types: turntable type, linkage type, and linear type.

        The cleaning part is designed according to different bottle shapes, and different cleaning equipment is generally available, such as crawler type, rotary backwash type, air blowing inspection type, etc. Customers must choose satisfactory cleaning equipment according to their own bottle shape.

        The filling part is based on the different materials. Liquids generally use direct current or pumping metering; pastes generally use piston pressure metering; and for materials with particles, screw compressor metering. According to the different requirements of the materials, filling methods such as gas filling, vacuum pump, negative pressure, and natural pressure can be used.

        密封一部分因为外盖的类型五花八门，型号的模貝也不一样。中国时兴的瓶塞大概有下列几类：外螺纹盖、防盜盖、三四旋盖、葡萄酒盖、鸭嘴阀盖、喷头盖、其他异形盖等。自动式旋盖机因为瓶塞不一样，也分成自动式封盖机、自动式扎盖机、自动式旋盖机等。因为生产量和技术性层面的难题，也有全自动封盖机、扎盖机、封罐机等。

        The labeling part is based on the materials and requirements of the label. The popular ones in China are generally self-adhesive labeling machines, hot melt automatic labeling machines, paste automatic labeling machines, and sleeve labeling machines. Ordinary mineral water bottles are commonly used in sleeve labeling machines and hot melt automatic labeling machines, while ordinary bottles are commonly used in self-adhesive labeling machines and special glass bottles use paste automatic labeling machines.

        The marking part is also divided into different types, including ribbon coding machines (often equipped with automatic labeling machines), printing ink coding machines (independent or paired), and marking machines (single use). Marking machines are generally used for date barcodes, order number markings, origin markings, etc.