A sachet packing machine automates the packaging process by forming, filling, sealing, and cutting products into small, sealed pouches called sachets. Below is a step-by-step overview of how a vertical sachet packing machine operates:
- Film Unwinding: A roll of flexible packaging film (such as laminated plastic or foil) is loaded onto the machine. The film is unwound and fed into the system, with mechanisms in place to maintain proper tension and alignment.
- Printing (Optional): If required, an integrated printer applies lot numbers, expiration dates, barcodes, or branding elements before the film is formed into sachets.
- Film Positioning: Photoelectric sensors detect registration marks on the film to ensure precise alignment, which is crucial for accurate cutting and sealing.
- Forming the Sachet: The film passes through a forming collar, shaping it into a vertical tube. The machine then applies a vertical seal along the overlapping edges, creating a continuous tube of sachets.
- Filling: The bottom of the sachet is sealed, and a precise filling system dispenses the product through a filling tube. Depending on the product type, the machine may use an auger filler (for powders), volumetric filler (for granules), or piston pump (for liquids and pastes).
- Sealing and Cutting: Once filled, the machine applies a seal to close the sachet, then cuts it to separate individual pouches. This process is continuous and automated, producing multiple sachets in quick succession.
This fully automated process ensures high-speed, precise, and hygienic packaging, making sachet packing machines essential for industries such as nutraceuticals, cosmetics, personal care, and more.
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