CHINAPLAS 2026 Bag Making Machine Highlights: Woven Bag & Inner Lining Machines

From April 21 to 24, 2026, the 38th CHINAPLAS International Exhibition on Plastics and Rubber Industries was grandly held at the National Exhibition and Convention Center (NECC) in Shanghai. This edition set new records with an exhibition area exceeding 390,000 square meters and over 5,000 high-quality exhibitors from home and abroad — an 11% increase from the 2024 Shanghai edition. In the machinery equipment zone, over 3,800 cutting-edge machines were demonstrated live, covering the entire industrial chain of injection molding, extrusion, blow molding, and all kinds of plastic packaging technologies.

As a practitioner and professional buyer in the bag making machine industry, I walked through various halls, focusing on new product trends and technological developments in woven bag making machines, automated inner lining bag machines, and other bag making equipment. Below is a summary of noteworthy highlights from this exhibition for industry peers.

1. Woven Bag Making Machines: Speed & Intelligence Dominate

Woven bags are widely used in bulk packaging for cement, fertiliser, grain, chemicals, and more. At this exhibition, multiple companies showcased new-generation high-speed woven bag making equipment, presenting the following technical highlights:

1. Capacity leap under stable operation

Unlike the past focus on just "running faster", this edition's exhibits emphasised a balance between high speed and stability. PEA SHIN's high-speed woven bag making machine, optimised for feeding, positioning, heat sealing and cutting, not only achieves stable high-speed production but also supports fast job changes for various woven bag sizes. Additionally, one listed exhibitor demonstrated a woven valve bag making machine capable of 110–140 bags per minute, with multi‑spindle synchronous operation and real‑time mobile app monitoring.

2. Digitalisation and intelligent control fully integrated

Traditional bag making machines rely on manual ruler adjustments — cumbersome and error‑prone. At this exhibition, many woven bag making machines featured bus control systems and HMI connectivity solutions. One particularly impressive model was a high‑speed fully intelligent all‑servo bag making machine: equipped with nearly 56 servo motors, it uses independent servo control and a bus control system for coordinated monitoring of all components. Maximum speed reaches 250 cuts/minute, waste rate is controlled within 2%, and debugging & production waste is reduced by about 35%. The emergence of such equipment means the leap from "experience‑based operation" to "data‑driven" production management has become a reality.

2. Automated Inner Lining Bag Machines: From "Pain Point" to "Highlight"

Inserting an inner liner bag into a woven outer bag is a complex process in the woven packaging industry with a low level of automation. Traditional manual lining is not only inefficient but also struggles to meet high‑precision positioning requirements for quality packaging. At this exhibition, automated inner lining bag machines became a major highlight.

As a representative exhibitor, PEA SHIN showcased a new‑generation fully automatic sack‑in‑sack machine. This equipment enables automatic insertion, positioning, and heat sealing of the inner liner into the outer woven bag in one step, significantly reducing labour costs while solving the persistent problems of low efficiency and inaccurate positioning in conventional lining operations. Its integrated production line solution connects printing, bag making, inner lining, and packaging into one seamless flow, offering a turnkey solution for the cement, fertiliser, chemical, and grain industries.

Also worth noting in the exhibitor list is another fully automatic woven bag cutting‑sewing‑lining integrated machine, which has obtained multiple national patents and serves many medium‑to‑large woven packaging enterprises both in China and abroad. It will further improve speed and stability in the future. It is foreseeable that automated inner lining bag machines will accelerate the replacement of manual processes in the coming years, becoming a key entry point for woven packaging enterprises to reduce labour costs and upgrade production line automation.

3. Other Highlights in Bag Making Segments

Beyond the core woven bag and inner lining bag equipment, this exhibition also delivered notable advances in other bag making niches:

Square‑bottom bag making machines: An improved square‑bottom bag making machine was demonstrated live, serving applications in pet food, snacks, daily chemicals, agricultural products, and more. The advantages of the one‑piece square‑bottom forming process — in terms of packaging appearance and storage efficiency — are increasingly recognised by end customers.

Specialised bag making equipment: The exhibitor list also included high‑speed fully intelligent all‑servo bag making machines for MDO or all‑PE materials, stand‑up pouch machines, and machines for star sealing & draw‑tape bags. This fully reflects the industry trend moving from general‑purpose equipment towards specialisation and segmentation.

4. Industry Trend Insight: From Individual Machines to Line Integration & Intelligent Management

An important signal sent by this exhibition is that the bag making machine is no longer an isolated processing unit but a key node in the whole flexible packaging line. The plastic flexible packaging machinery zone comprehensively displayed coaters, laminators, slitters, printing presses, and bag making machines — integrated with AI‑driven quality control and flexible production processes — forming a complete industrial chain solution from material conversion to end packaging. Meanwhile, fully automatic integrated lines combining bag making, filling, sealing, and inspection, together with robotic material handling and digital control systems, are becoming the upgrade direction for more and more packaging enterprises.

On the digital front, solutions such as industrial IoT‑driven production management systems, mobile APP remote monitoring, and paperless production reports have entered practical application. This marks the industry's accelerated leap from "automation" to "intelligence". For bag making machine enterprises, the future competitive focus is no longer just the efficiency and quality of individual machines, but whether they can provide customers with an integrated solution covering entire lines, data interconnections, and intelligent management.

5. Actionable Advice

If you are considering upgrading your bag making production line or purchasing new equipment, the following suggestions may serve as a reference:

1. Pay attention to high‑speed woven bag making machines — Choose models with multi‑servo control, fast job change capability, and digital management functions to significantly improve line flexibility and production efficiency.

2. Evaluate automated inner lining solutions — The bottleneck of manual labour efficiency is being broken by technological breakthroughs. Automated inner lining bag machines are now mature enough to replace manual processes, especially suitable for medium‑to‑large woven packaging enterprises focusing on cement, fertiliser, and grain packaging.

3. Think about whole‑line integration, not single‑machine selection — Fully automated integration from printing, bag making to post‑packaging will deliver greater efficiency and cost advantages over the long run.

Conclusion

Although CHINAPLAS 2026 has concluded, the technological directions and product trends showcased at the exhibition will continue to shape the next iteration of the bag making machine industry. We firmly believe that with the continued penetration of AI and digital technologies, and the continuous maturity of core equipment such as automated inner lining machines and high‑speed woven bag making machines, the bag making and packaging industry is embracing a profound transformation — from "single‑machine efficiency" to "intelligent production lines".

(For more live demonstration videos and technical parameters from the exhibition, please contact our sales team for detailed information.)