The Multi-Grain Back Seal Packaging Machine is a high-efficiency vertical form-fill-seal (VFFS) solution engineered for stable, accurate, and hygienic small-dose sachet packaging. Based on the PM180E back-seal platform and built with a 304 stainless-steel structure, it integrates reliable film forming, precise bag pulling, and consistent heat sealing to produce clean, well-shaped pillow bags with a neat back seal. Designed for multi-grain and counting-style dosing scenarios, it performs especially well with small solid items such as soft capsules, hard capsules, tablets, and similar products that require controlled filling, repeatable bag length, and dependable sealing quality. With industrial-grade electrical and pneumatic components, an intuitive touch-screen control interface, and servo-driven cross-seal bag pulling, the machine supports continuous production where speed, accuracy, and packaging appearance must remain consistent from batch to batch.
Product Introduction
This system forms, fills, and seals back-seal sachets in one compact, production-ready unit. The PM180E main machine combines a stable mechanical frame with refined sealing geometry and film-handling performance, allowing composite films to run smoothly while maintaining uniform tension and bag registration. The longitudinal (back) seal is designed to be clean and “grain-free,” helping reduce wrinkles and improve overall presentation. A V-shaped easy-tear notch and flat-cut output support user-friendly opening and a tidy finished look. Product-contact areas are manufactured from 304 stainless steel to meet typical hygiene requirements and to simplify daily cleaning and changeover procedures.
Product Features
High-accuracy bag pulling with servo control: A servo motor drives the cross-seal and bag pulling motion, improving bag-length precision and maintaining stable sealing performance at higher operating speeds. This design helps minimize length deviation, improves repeatability, and supports consistent downstream handling.
Reliable sealing with independent PID temperature regulation: Dual-channel Omron PID temperature control independently manages longitudinal and transverse sealing temperatures. This enables fine tuning for different composite films, helping reduce weak seals, film burn-through, and edge wrinkling while improving seal integrity and bag aesthetics.
Smart, user-friendly control system: The machine uses an Inovance PLC paired with a 7-inch color touch screen. The bilingual interface simplifies operation across different teams, while fault alarms and self-diagnosis functions help locate issues quickly and reduce unplanned downtime.
Hygienic stainless-steel construction: The main structure and product-contact components are made of 304 stainless steel, offering corrosion resistance, improved cleanliness, and easy wipe-down maintenance—important for pharmaceutical, nutraceutical, and health-related packaging environments.
Industrial-grade components for long-term stability: Key electrical parts are supplied by Schneider/Omron, and pneumatic components use Taiwan AIRTAC, enhancing reliability and consistency in continuous production conditions and supporting long service life.
Clean back-seal pillow-bag output: The back-seal structure, 10 mm back seal width, straight mesh horizontal sealing pattern, and 5 mm horizontal seal width are configured to deliver uniform sealing lines and stable bag appearance across typical composite packaging materials.
Technical Specifications
| Model | PM180E Back Seal Packaging System |
| Machine Structure | 304 stainless steel main machine; 304 stainless steel product-contact parts |
| Applicable Products | Soft capsules, hard capsules, tablets (and similar solid items) |
| Filling Range | 1–30 g |
| Measuring Accuracy | ±0.5 g (may vary depending on material characteristics) |
| Packaging Speed | 30–60 bags/min (depending on bag length and material condition) |
| Bag Size Range (W × L) | 30–80 mm × 60–150 mm |
| Film Width | 170 mm standard (max 180 mm) |
| Packaging Film Type | Composite packaging materials |
| Sealing Type | Back seal; longitudinal seal without grain |
| Back Seal Width | 10 mm |
| Horizontal Seal Pattern | Straight mesh (0.5 mm spacing) |
| Horizontal Seal Width | 5 mm |
| Cutting Mode | Flat cut |
| Tear Notch | V-shaped easy tear |
| Bag Pulling Method | Cross-seal hot-seal bag pulling |
| Photoelectric Sensor | Julong |
| Control System | Inovance 7-inch color touch screen + Inovance PLC; bilingual UI; fault alarm & self-diagnosis |
| Temperature Control | 2-channel Omron PID (1 for longitudinal seal, 1 for transverse seal) |
| Electrical Components | Schneider or Omron |
| Pneumatic Components | Taiwan AIRTAC |
| Drive System | Servo motor for cross seal and bag pulling |
| Power Supply | AC 220V / 50Hz |
| Power | 1.5 kW |
| Compressed Air Requirement | 6 kg; 0.3 m³/min |
Product Application Fields
The Multi-Grain Back Seal Packaging Machine is suitable for operations that require fast, consistent single-sachet packaging of small solid products. It is widely used in pharmaceutical and healthcare manufacturing for unit-dose packaging of capsules and tablets, as well as in nutraceutical and dietary supplement production for daily serving sachets and trial packs. The system is also an efficient choice for contract packers and multi-product facilities that need dependable back-seal pillow bags made from composite films, where stable sealing quality, accurate dosing, and uniform bag appearance are essential for product safety, shelf presentation, and automated downstream processes such as counting, cartoning, and case packing.
