Ruian Koten Machinery Co., Ltd. is one of the leading manufacturers and suppliers of large format pocket envelope forming machine for exam paper bags and documents hp-250c in China. With abundant experience, we ware committed to providing high quality machinery made in China with competitive price. If you're going to buy CE approved large format pocket envelope forming machine for exam paper bags and documents hp-250c, welcome to get quotation from our factory.
Products Description
HP-250C Full Automatic Pocket Envelope Making Machine
The HP-250C is a heavy-duty, fully automatic machine engineered for high-volume production of large-format pocket envelopes, open-end envelopes, and similar paper bags. Featuring an air-suction bottom feeding system with no-stop feeder, it delivers continuous output at 4000–5000 pieces/hour. The rotary gluing structure ensures even adhesive application, while the air-suction barrier folder guarantees stable performance at high speeds.
Key Features:
Max. envelope size: 360 × 520mm
Paper weight: 70–157 gsm (handles thick paper with ease)
No-stop feeder for uninterrupted production
Precise paper positioning & user-friendly operation
7.0 kW power, 2500 kg robust construction
Ideal For:
🖨️ Printing Factories - Custom printed envelopes, letterheads, greeting cards
📦 Packaging Factories - Gift bags, document pouches, promotional packaging
✉️ Envelope Manufacturers - Pocket envelopes, open-end envelopes, courier mailers
🛍️ Paper Bag Makers - Shopping bags, kraft bags, food delivery bags
🏢 Trading & Wholesale Companies - Bulk envelope and paper bag supply
Main Paramater
| Model | HP-250 | HP-250PLUS | HP-250D | HP-250B | HP-250C |
| Paper weight | 50-157gsm | 50-200gsm | 60-157gsm | 60-157gsm | 70-157gsm |
| Machine speed | 5000-22000pcs/min | 5000-22000pcs/min | 4000-12000 pcs/hour | 4000-12000 pcs/hour | 4000-5000pcs/hour |
| Envelope size range | Min. 30x50mm- Max. 120x250mm |
Min. 30x50mm- Max. 120x250mm |
Min. 50x70mm- Max. 180x300mm |
Min.100x110mm- Max. 260x400mm |
Min. 120x150mm Max. 360x520mm |
| Total power | 4.1KW | 4.5KW | 4.5KW | 6.0KW | 7.0KW |
| Machine weight | 1100KG | 1300KG | 1300KG | 1800KG | 2500KG |
| Machine size | 1550x800x1230mm | 1900x900x1500mm | 2200x950x1300mm | 2800x1150x1400mm | 3300x1200x1700mm |
Company Proflie
Installation
The above price not contain the installation and training charge, if customers request our engineer for this service, customers should pay the flight tickets, hotel, food and daily wage.
Guarantee
One year, within one year, the damaged spares by nature can be changed for free.
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