ZHONGSHAN, China, Nov. 11, 2026 /PRNewswire/ -- Smart Weigh Packaging Machinery Co., Ltd. (Smart Weigh) provides integrated secondary packaging solutions for food manufacturers across three applications: bag-in-bag packaging, multipack wrapping and bag-to-carton packaging. The systems automate the handling, counting and grouping of individually packaged products before they move into larger bags or cartons. They can also be configured to work with existing primary packaging equipment, allowing manufacturers to add downstream automation around their current production lines.

Secondary Packaging for Different Packing Requirements

Food manufacturers often need to combine individually packed products into larger retail or distribution packs. Depending on the product and packaging requirements, this may involve placing several small bags into one outer pouch, wrapping a group of bags together or loading individual packs into cartons.

Each application calls for a different handling and packing process. Smart Weigh configures its secondary packaging systems according to factors such as bag shape, pack quantity, production speed and the type of outer packaging.

Bag-in-Bag Packaging

For products sold in larger pouches containing multiple individually packed items, Smart Weigh offers bag-in-bag systems using either premade pouches or form-fill-seal packaging equipment.

One configuration for long or stick-shaped inner packs combines an incline conveyor, a stick multihead weigher operating in counting mode and a rotary premade pouch packing machine. The conveyor feeds the individual packs to the multihead weigher, which counts and groups them into the required quantity. The rotary machine then opens an outer pouch, receives the grouped products and seals the finished pack.

The weighing hoppers, discharge chute and filling funnel are configured to suit the shape and dimensions of the inner packs, helping guide them into the outer pouch smoothly.

Multipack Wrapping

Multipack wrapping brings several individual bags together into one larger pack. The process typically involves arranging the incoming bags, counting them into groups and transferring each group to the wrapping section.

Smart Weigh's SW-CP500 is designed for pillow bags. It brings together bag collating, counting, group formation and film wrapping. According to the published specifications, the machine operates at 8 to 10 wraps per minute and supports group formats such as 8, 10 or 12 bags per wrap.

In a separate customer project, Smart Weigh configured an automated process for a 28-bag multipack. The system counts seven bags in each cycle and repeats the process four times, bringing 28 individual bags together for packing into one larger outer bag. This application shows how the counting and grouping process can be arranged around a specific pack quantity.

Bag-to-Carton Packaging

Some food manufacturers need to place individually packaged products directly into cartons for storage, distribution or retail supply. For these applications, Smart Weigh provides bag-to-carton configurations that use automated bag arranging and transfer mechanisms.

For bag-to-carton applications, Smart Weigh uses automated handling equipment to arrange individual bags before they are loaded into cartons. The feeding and arranging setup is selected according to the bag style, bag size, how the products need to sit in the carton and the required quantity per carton.

For doypack pouches that need to stand upright inside cartons, Smart Weigh provides automated counting, grouping and carton loading solutions. The system arranges the pouches in the required quantity and loads them into cartons while keeping them in an upright position. This offers an alternative to robotic picking for suitable carton-loading applications.

Integrating Secondary Packaging with Existing Production Lines

Many food manufacturers already have primary packaging equipment in operation and need a secondary packaging system that can connect with their existing setup. Smart Weigh works with the customer's current line layout and product output to plan the conveying, distribution and downstream packing process.

A potato chip packaging project featured on Smart Weigh's website is one example. The customer had three primary packaging machines, each producing around 100 to 110 bags of chips per minute. Smart Weigh designed a secondary packaging system to connect all three lines and pack the individual chip bags into larger pillow bags.

The system was configured to pack either 14 or 20 individual chip bags into each outer bag, with a published secondary packaging output of 15 to 25 finished packs per minute.

A separate project in Russia involved a different type of integration. The customer already had a primary packaging line equipped with a multihead weigher and a pouch packing machine, and purchased only the secondary packaging section from Smart Weigh.

The system automatically counts and groups five doypack pouches before loading them upright into a carton. It keeps the pouches in a standing position throughout the loading process and runs at approximately six to seven cartons per minute.

These projects show two ways Smart Weigh's secondary packaging equipment can work with existing production lines. One connects multiple primary packaging machines to a shared downstream system for larger bag formats. The other adds automated counting, grouping and cartoning after an existing pouch packaging line.

Packaging Configurations Based on Production Needs

"Secondary packaging requirements vary from one food production line to another. Some manufacturers need to collect individual pouches into larger bags, while others need to wrap multipacks or load products into cartons. We first look at how products leave the existing primary packaging equipment, then work out how conveying, distribution, counting and packing should be arranged. This helps us configure a system around the customer's products and production requirements."

——Hanson Wong, CEO of Smart Weigh 

Smart Weigh's secondary packaging solutions cover bag-in-bag packaging, multipack wrapping and bag-to-carton applications. By considering product handling and the connection between packaging stages, the company works with food manufacturers to configure downstream systems around their existing production lines and finished pack requirements.

About Smart Weigh

Smart Weigh Packaging Machinery Co., Ltd. is an automated weighing and packaging system integrator specializing in solutions for the food manufacturing industry. Founded in 2012 and headquartered in Zhongshan, China, the company provides solutions covering feeding, weighing, filling, packaging, inspection, cartoning and palletizing. Its equipment serves applications in snacks, ready meals, frozen foods, pet food and fresh produce.

Smart Weigh has delivered more than 2,000 systems to customers in over 50 countries and regions. The company also has overseas service centers in the United States, Spain, Indonesia and Dubai, supporting customers with equipment integration, layout planning, commissioning, training and after-sales services.

For more information, visit https://www.smartweighpack.com/.

Media Contact:

Smart Weigh Packaging Machinery Co., Ltd.
Email: export@smartweighpack.com
Website: www.smartweighpack.com