High-Speed Automatic Self-Adhesive Bagging Machine: Engineered for Stationery, School Supplies & Gift Packaging

1. Precise Sizing & Packaging Cost Transparency

Stationery and paper products strictly adhere to the international ISO 216 paper standard (A3, A4, A5). Our packaging machine is designed around these universal dimensions, running standard $0.04\text{ mm}$ ($40\mu \text{m}$) polymer self-adhesive bags with a $40\text{ mm}$ self-adhesive flap:

Note: Film cost calculations are based on $0.04\text{ mm}$ film thickness, 0.914 g/cm30.914 g/cm3 density, and $13\text{ RMB/kg}$ raw material cost.

2. Machine Highlights: Engineered for Paper & Stationery Lines

• ⚙️ Non-Vacuum Mechanical Bag Opening Mechanism: Unlike conventional packaging systems that rely on vacuum suction cups (which often fail due to paper dust, static electricity, or film sticking), our machine employs a pure mechanical guide and positive mechanical wedge expansion system. This guarantees reliable, jam-free bag opening on glossy OPP, CPP, and LDPE self-adhesive bags.
• ⚙️ Gentle Flat Infeed for Paper Goods & Flat Gifts: Specially configured pushers and smooth stainless-steel transfer plates feed multi-page notebooks, single greeting cards, or loose exam sheets smoothly into the bag without bending corners, scratching delicate print surfaces, or disturbing paper collation.
• ⚙️ Automatic Release Liner Removal & Clean Disposal: The machine's mechanical gripper cleanly peels the $40\text{ mm}$ protective liner from the self-adhesive strip and channels it directly into an enclosed waste collector, keeping the entire packaging area free from static, sticky liner debris.
• ⚙️ Flat, Wrinkle-Free Edge Pressing & Sealing: A precision motorized roller assembly presses down the self-adhesive flap evenly across the bag width. This produces a crystal-clear, retail-grade flat seal that keeps books and gift stationery neatly compressed and protected from warehouse humidity.
• ⚙️ Fast Size Adjustment Between A5, A4, and A3: Tool-less modular guide rails allow operators to switch production setups between A5 notebooks, A4 school workbooks, and A3 art papers in minutes, meeting the high-mix, seasonal order demands of stationery manufacturers.

3. Comparison: Manual Packaging vs. Depai Auto Bagging Machine

4. Typical Application Scenarios

1. Publishing & Bookbinding Factories: Bulk single or multi-pack packaging of student exercise books, coloring books, and textbooks before carton packing.
2. Office Stationery & Paper Converters: Transparent retail packaging for A4 printer paper packs, presentation folders, file envelopes, and spiral notebooks.
3. Gift & Greeting Card Manufacturers: Dust-proof protective wrapping for holiday cards, gift envelopes, party invitation sets, and novelty stationery packs.
4. School & Exam Paper Supply Centers: Tamper-evident, waterproof packing for standardized test papers, student exam packets, and certificate diplomas.