Stand-up pouch packaging refers to flexible composite packaging bags that can stand upright on a horizontal surface. Their bottoms are supported by rounded or square corners. Common forms include stand-up pouches, zippered stand-up pouches, valved stand-up pouches, and easy-tear stand-up pouches. They are basically composed of multiple layers of plastic film, dry-laminated or extruded, typically including a printed layer, a functional layer, and a heat-sealing layer. The outer layer provides graphic display and appearance protection, the middle layer determines the required physical and gas transmission properties, and the inner layer is responsible for heat sealing and contact with the contents. The manufacturing process usually includes film making, printing, lamination, curing, slitting, and bag making. The finished product is then opened, filled, and sealed according to the filling line.

1. Stable:

The stand-up pouch packaging features an optimized bottom insert and side seal structure, with a standard thickness range of 90–160 μm and a typical bottom width of 60–120 mm. Bag stiffness is ≥3,000 MPa in the longitudinal direction, based on ASTM D882 tensile modulus. Empty bags maintain their shape after a drop test from 0.8 m, meeting the requirements for shelf uprighting and stacking after protein powder filling.

2. Barrier:

Optional PET/VMPET/NY/PE or PET/AL/NY/RCPP structures are available. Oxygen permeability (OTR) is ≤1.0 cc/m²·day, and water vapor permeability (WVTR) is ≤0.1 g/m²·day (38 °C, 90%RH, ASTM F1249). These barrier parameters control the transport flux of protein powder to air and moisture, maintaining the necessary dryness of the powder.

3. Cleanliness:

The inner layer of the Stand-Up Pouch Packaging is made of food-contact grade PE or RCPP, complying with FDA 21 CFR and EU 10/2011 contact regulations; heavy metal content is monitored according to EN 13428, and printing residue meets the reference limits of GB/T 10004. The heat-sealing clean area is ≥10 mm from the cutting edge, and the powder drop area features a dust-proof design to ensure hygienic operation at the filling end.

4. Convenience:

It can be equipped with zippers, easy-tear openings, hanging holes, and one-way vent valves; the heat-sealing temperature range is 120–160 °C (PE) or 135–180 °C (RCPP), suitable for common intermittent and continuous sealing equipment. Standard capacities cover 250 g, 500 g, 1 kg, and 3 kg, meeting the switching cycle time requirements of different formulation schemes.

5. Texture:

Stand Up Pouch Packaging offers a choice of glossy or matte coatings. Printing utilizes gravure/flexographic printing, supporting up to 10-color overprinting and full-page high-definition graphics. Flatness is tested according to GB/T 2828, with a color difference ΔE ≤ 2.0. Customized patterns, bag types (SUP, Flat Bottom, etc.), and material layers can be customized to maintain a unified visual image on store shelves.

1. E-commerce Shipment:

Stand-Up Pouch Packaging targets cross-border and domestic e-commerce fulfillment scenarios. Bag size and weight markings can be configured according to SKU levels. It utilizes barcode and batch number heat transfer areas for easy warehousing, picking, and batch traceability. Drop tests from 1.2m at multiple angles verify packaging integrity, reducing damage and returns during transit.

2. Fitness Retail:

Designed for countertop display in gyms and nutrition stores, the bag surface features a section for nutritional information and usage suggestions, supporting small-batch, multi-flavor switching. The top perforated or octagonal self-standing structure facilitates shelf hanging and end-cap stacking, improving information reading efficiency within the terminal's visible range.

3. Trial Packaging:

For new product tasting or promotional trials, the capacity can be customized to small weight specifications from 30–100 g. The opening end features an easy-tear line to control opening force. Batch QR codes and miniature traceability areas facilitate offline activity scanning and registration, enabling the conversion and attribution of sample package return data.

4. Export Formulas:

Targeting overseas formulas and regulatory markets, Stand Up Pouch Packaging provides multilingual information areas and net content labeling areas, with linked outer carton and inner bag codes; bag width and bottom width are converted according to palletized loading dimensions to achieve high loading efficiency for pallet stacking, and matches destination customs clearance label specifications.