Cookies, chocolate bars, baking mix cups, napkins, screws\u2014anything that can be transported lying flat is packaged by the Flow-pack machine<\/a>. It is the horizontal counterpart to the vertical form-fill-seal machine: product goes in, film wraps around it, the seal is closed, and the package is ready. This guide summarizes the operating principle, film specifications, selection, and operation.<\/p>\n The flow-pack machine (horizontal form-fill-seal machine, HFFS) follows four steps that run simultaneously:<\/p>\n The choice depends on the packaging application: multi-pack bars sold in stores \u2192 Seal Wheel. Premium product with a resealable lid \u2192 Box Motion.<\/p>\n The film determines the appearance, shelf life, and cycle time of the flow-pack line. Three parameters influence the selection:<\/p>\n Common operational issues: open cross seams (sealing time too short for the film thickness), wrinkles in the fin seam (guide too loose), and product residue in the seal seam\u2014these contaminate the sealing plates and weaken any subsequent seams. A tightly synchronized feed and brush scrapers upstream of the sealing wheel help prevent product residue in the seam.<\/p>\n For unformed bulk materials (granules, powder), the vertical form-fill-seal machine is the right choice\u2014the flow-pack machine packages individual pieces, not bulk material. For liquids, you need a horizontal machine with tray conveyance or a custom model. And at less than about 30 packages per minute, the investment isn\u2019t worth it\u2014in that case, a semi-automatic machine or a Pillow Packaging Machine<\/a> table-top version.<\/p>\n The flow-pack machine is film-driven\u2014wear occurs wherever the film is guided: the mold shoulder (check the polish finish), sealing wheels and sealing belts (wear limits of the rubber linings), tension rollers, and idler rollers. Cleaning primarily concerns the product zone of the feed: Crumbs in the seal seam area are the most common cause of leaks. Recipe management on the HMI stores film length, sealing temperature, and cycle count per product\u2014making a product change a recipe change that takes just minutes; only a format change requires part replacement (15 to 30 minutes is standard in the industry).<\/p>\n The Direction and the Product: The vertical machine forms the bag downward and dispenses bulk material into it; the flow-pack machine wraps a horizontal piece of product perpendicular to the conveyor direction. Both machines seal using a continuous film web.<\/p>\n Industry standard: 50 to 250 packages per minute\u2014bars and small cookies reach the upper end of the range, while delicate baked goods and large items reach the lower end. Plan for a continuous power rating of 70 to 80 % of the rated power.<\/p>\n Film consumption is based on the packaging area plus a margin of a few millimeters per seam\u2014the specific calculation should be included in the inquiry along with the packaging dimensions and film configuration.<\/p>\n Yes\u2014cups, cans, and small bowls are processed on flow-pack lines equipped with a vertical chute or a rotary valve as the feed mechanism. The lid remains on the outside; the film packaging serves as the secondary packaging with aroma protection.<\/p>\n Related pages:<\/strong> Flow-pack machine<\/a> | Pillow Packaging Machine<\/a> | What is a vertical form-fill-seal (VFFS) machine?<\/a> | VFFS Guide<\/a><\/p>\nThe principle: wrapping film around the product as it lies<\/h2>\n
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\n Parameter<\/strong><\/th>\n Industry-standard range<\/strong><\/th>\n<\/tr>\n<\/thead>\n\n \n Tempo<\/td>\n 50 to 250 packages per minute, depending on the product and format<\/td>\n<\/tr>\n \n Film thickness<\/td>\n 20 to 60 \u00b5m composite film<\/td>\n<\/tr>\n \n Package Size<\/td>\n Area up to approximately 200 mm wide; length can be freely programmed<\/td>\n<\/tr>\n \n Sealed seam<\/td>\n Seam or overlap seam, temperature-controlled<\/td>\n<\/tr>\n \n Products<\/td>\n General merchandise in rows, packs, cups, and multipacks<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Two designs: seal wheel and Box Motion<\/h2>\n
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Film Science: The Seam Is the Product<\/h2>\n
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Selection in Five Steps<\/h2>\n
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When a flow-pack machine isn't the right choice<\/h2>\n
Operation and Maintenance<\/h2>\n
Frequently Asked Questions<\/h2>\n
What is the difference between a flow pack and a vertical form-fill-seal bag?<\/h3>\n
How fast is a flow-pack machine, really?<\/h3>\n
How much does a flow-pack of film cost?<\/h3>\n
Can a flow-pack machine also package cups?<\/h3>\n
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