Automatic Premade Brick Bag Packing Machine

Premade Pouch Packaging MachineAutomated ZD140-2 Twin-Screw Paper Bag Line Launched by YuanxinAnhui Yuanxin Single Sprial double Spril Paper bag flour packaging machine1. Application

Industry: Food, pet food, agriculture, confectionery, dried goods, hardware, daily chemicals and more.

Suitable products: Snacks, nuts, potato chips, peanuts, candy, chocolate, coffee beans, dried fruit, pet food, frozen vegetables, rice, seeds, spices, granules, puffed food and other free-flowing granular or small-piece products.

Suitable pouches: Pre-made stand-up pouches, zipper pouches, flat bags, back-seal bags, gusseted bags, shaped pouches, and small cartons or trays (depending on configuration).

2. Main Features

Double multihead weigher integrated (as shown in the picture): two weighing hoppers work alternately to achieve higher weighing speed and accuracy; suitable for medium-to-large granular products.

Automatic rotary working stations: bag pickup → bag opening → filling → exhaust / N₂ flushing → heat sealing → date printing → cooling → output, all completed automatically.

Servo motor control for bag pulling and sealing jaws, ensuring accurate positioning, stable sealing and low reject rate.

PLC + color touch screen (HMI): English interface, recipe memory for up to dozens of bag sizes, real-time production count, fault alarm display with troubleshooting prompts.

Transparent acrylic safety guards with interlock switches – machine stops automatically when a door is opened, meeting CE-level safety requirements.

Food-grade contact parts: 304 stainless steel hopper, forming parts and product-contact surfaces, easy to clean and sanitize.

Wide pouch compatibility: quick changeover between pouch sizes and styles; no specialized tools required.

Date coder / ribbon printer built-in (as shown on the right side of the line) for printing production date, batch number and expiration date.

3. Working Process

Bag supply: Pre-made pouches are loaded onto the bag magazine by the operator.

Bag pickup: A vacuum gripper takes one pouch at a time and places it on the rotary chain.

Bag opening: The pouch is opened by vacuum suction and checked by a sensor – no bag, no fill.

Filling: The multihead weigher discharges the weighed product into the pouch through the filling funnel.

Exhaust / Nitrogen flushing (optional): Air is gently pressed out, or nitrogen is flushed in to extend shelf life.

Heat sealing: The pouch top is heat-sealed in multiple seal jaws, with temperature independently controlled for front and rear seals.

Cooling: Sealed jaws cool the bag to flatten and strengthen the seal.

Coding: Date / lot number is printed on the seal area.

Discharge: Finished pouches are conveyed out for downstream packing or cartoning.

4. Optional Configurations

Single / double / 10-head / 14-head / 16-head multihead weigher (choose by product density and target output).

Screw auger filler for powders; liquid / paste pump for sauces and liquids; linear weigher for large bags.

Nitrogen gas-flushing system for coffee, snacks and oxygen-sensitive products.

Vacuum conveyor / z-type bucket elevator to feed product to the weigher automatically.

Check weigher and metal detector for downstream quality control.

Ink-jet printer, ribbon coder or laser coder.

Additional gusseting, hole-punching or degassing-valve application station.

5. Technical Advantages at a Glance

High accuracy: ±0.5–1 g depending on product and weigher model.

High speed: up to 40–60 pouches/min (varies by bag size and product).

Low material waste: no film waste (uses pre-made pouches), no scrap bag trim.

Premium package look: stand-up, zipper, kraft-paper and window pouches make your product shelf-ready.

Easy maintenance: open-frame design, centralized lubrication, modular parts for fast changeover.

CE compliant: low-voltage, EMC and machinery-directive design available for EU and North American markets.

6. After-Sales Support

English operation manual and video guidance included.

On-site installation and commissioning available on request.

12-month warranty from shipment date, lifetime technical support.

Spare parts (sealing jaws, belts, sensors, heating elements) shipped quickly from stock.

Remote diagnosis via team viewer / WhatsApp for fast response.