Stick filling machine automate the packaging of granular, powdery, líquido, paste, and solid products (por exemplo, snacks, candy, pet food, detergent, especiarias) into pre-made, stand-up pouches (pillow bags, 3/4-side seal bags) from a continuous roll of film.
Ruida Packing’s RD-SPM-480 6-Lane back sealed sachet packing machine sets a new benchmark for high-speed pharmaceutical powder packaging. Combining servo precision with GMP-compliant engineering, this system delivers unmatched accuracy from film unwinding to final product discharge. Here’s how it achieves ±0.1% dosing accuracy while meeting strict regulatory standards.
1. Princípio de funcionamento
1.1 Film Unwinding & Tension Control
A roll of multi-layered packaging film (PET/PE, OPP/CPP, Alu/PE) is mounted on the machine’s unwind shaft. A tension control system (brakes, sensores, dancer rolls) maintains constant, optimal film tension to prevent wrinkles, stretching, or slack.
1.2 Film Guidance & Printing (Opcional)
The film passes through guide rollers, ensuring smooth, aligned entry into the forming section. If required, a date/batch code printer (thermal transfer, inkjet, ribbon) marks the film at a precise location.
1.3 Film Forming
This precision metal shapes the film into a continuous, vertical tube by folding/bending it. The film edges are positioned either overlapping or butting, ready for the longitudinal seal.
1.4 Longitudinal (Vertical) Selagem
Immediately after forming, the overlapping film edges pass through the longitudinal sealer. Heated belts apply controlled heat, pressão, e tempo de permanência. The film’s inner heat-seal layer melts, creating a strong, continuous back seal (one side of the finished bag).
1.5 Product Filling
The sealed film tube continues downward. Below the longitudinal seal point, servo screw (coaxial with the forming collar) dispenses a pre-measured product dose into the sachet. Dosing is done via augers. Gravity aids product flow. Filling occurs below the seal to avoid contamination.
1.6 Transverse Sealing & Corte
The jaws clamp tightly, applying heat and pressure. Creates two seals at once. The TOP seal of the lower bag (being filled). The BOTTOM seal of the upper bag (just filled). A blade (hot knife, serrated, cold cut) integrated between the jaws severs the film between these two seals. This separates the finished upper bag and leaves the lower bag open at the top for the next fill.
1.7 Finished Bag Discharge
The separated, sealed bags are conveyed away for collection or downstream processing (controlador de peso, detector de metais, embalagem de papelão).
2. Vantagens
2.1 Alta eficiência & Operação Contínua
Uses continuous roll film, eliminating frequent stops for pre-made bags. Very high speeds (muitas vezes 200+ bags/minute), ideal for mass production.
2.2 Flexible Pouch Styles
Can produce 3-side seal and 4-side seal bags with tooling changes. Adjustable pouch length and width (via forming collar change).
2.3 Ampla compatibilidade de materiais
Handles various laminated roll films: single/multi-layer plastics, metallized films, aluminum laminates, paper composites. Suits diverse barrier, força, print, and seal requirements.
2.4 Broad Product Applicability
Packages diverse forms: grânulos, pós, líquidos, pastas, solids, flakes, chunks. Widely used in Pharma (pós), Comida (snacks, frozen goods, café, especiarias), FMCG (detergentes, samples), Pet Food, Hardware, and Chemicals.
2.5 High Automation
Fully integrates film handling, formação, enchimento, vedação, codificação (optional), corte, e descarga. Easily integrated with upstream feeders (weigh scales, auger fillers, liquid pumps) and downstream systems (controladores de peso, embaladores de caixas).
2.6 Material & Eficiência de custos
Roll film generates less waste compared to pre-formed pouches. Compact storage and transport of film rolls reduces costs.
2.7 Reliable Sealing
Controlled heat, pressão, and time ensure strong, hermetic longitudinal and transverse seals for product protection and extended shelf life.
2.8 Photoelectric Mark Alignment
Our high-resolution optical sensors scan registration marks at 200 scans/second. This enables closed-loop feedback to dynamically adjust film position in real-time:
Uncompromising Positional Accuracy: Ensures tear notches align within ±0.3mm tolerance while maintaining print graphic consistency.
Zero Material Waste: Eliminates misalignment-related film rejection.
Process Reliability: Guarantees every pouch maintains identical functional and aesthetic properties.
3. Limitações
Product Constraints: Less suitable for very long, heavy, frágil, easily crushed, or extremely irregularly shaped items that may jam in the tube or filler.
Changeover Complexity: Changing pouch width requires replacing the forming collar, envolvendo tempo de inatividade e habilidade do operador.
Investimento Inicial: Custo inicial mais alto em comparação com máquinas manuais/semiautomáticas simples.
Dependência da qualidade do filme: Requer consistência, estoque de rolo de filme de alta qualidade. Imprimir registro, controle de tensão, e o desempenho da camada de vedação são essenciais para uma operação confiável.
Máquina de selagem e enchimento de forma de pacote stick se destaca em alta velocidade, produção automatizada de stand-up pouches por meio de sua exclusiva formação de tubo vertical, enchimento, e processo de vedação. Os principais pontos fortes incluem eficiência, versatilidade da bolsa (especialmente capacidade de stand-up), ampla compatibilidade de material/produto, automação, e economia de materiais. A seleção requer consideração cuidadosa das especificidades do produto, volume de produção, tipo de filme, orçamento, e necessidades de automação.
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