Keypack Intelligent Powder VFFS Machine with Upper & Lower Horizontal Sealing KL-300F is a precision vertical form-fill-seal system engineered for automated powder metering and packaging with horizontal top-and-bottom sealing technology. It delivers 20–40 bags per minute with ≤±1% weighing accuracy, driven by a PLC servo control system and built with full 304 stainless steel construction. Ideal for food-grade milk powder, seasoning powder, and pharmaceutical or chemical powder products requiring contamination-free filling with superior horizontal seal integrity.
Product Overview
The KL-300F is a fully automatic powder VFFS (vertical form-fill-seal) packaging machine purpose-built for powdery materials, featuring upper and lower horizontal sealing for maximum seal strength and dust-tight bag closure. Unlike conventional back-seal VFFS machines, the KL-300F's horizontal seal design creates a flat, reinforced top-and-bottom seal that is especially suited to fine powders — including milk powder, starch, seasoning powder, pharmaceutical powder, and washing powder — that demand airtight, contamination-free sachet packaging.
The machine integrates PLC servo drive control with a large color touchscreen interface, enabling precise bag formation with horizontal seal orientation, accurate powder filling, secure sealing, ribbon date coding, and sachet cutting — all in one continuous automated operation. The system supports multiple packaging film types including Paper/PE, PET/AL, Foil/PE, Nylon/PE, and tea-leaf filtering paper, providing versatility across food, pharmaceutical, and chemical powder packaging applications.
Equipped with Keypack Intelligent (Kunbupack) horizontal seal VFFS technology, the KL-300F stores packaging parameters for multiple powder products on the touchscreen, enabling rapid product changeover without manual reconfiguration — a key advantage for powder producers running multiple SKUs on a single packaging line. Color mark detection ensures precise film registration for printed packaging films, while the sponge air exhaust system improves bag appearance and powder settling for a clean, professional retail presentation.
The KL-300F can be paired with corresponding metering systems and conveying systems to automatically complete the full powder packaging process: product metering, bag making with horizontal seals, gas flushing or air evacuation, date printing, and counting.
Key Features and Machine Characteristics
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Upper & Lower Horizontal Seal Design: Top-and-bottom horizontal sealing delivers superior seal integrity, dust-tight bag closure, and premium flat-bottom bag appearance — ideal for retail display of powder sachets and single-serve powder portions across food, pharmaceutical, and chemical applications.
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PLC Servo Drive Control: Full servo-driven film feeding and sealing system with large color touchscreen interface enables intuitive operation, real-time monitoring, and recipe management for multiple powder formulations and bag formats — maximizing overall machine control precision.
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Tailored Design for Powder Materials: The machine structure and filling zone are specifically tailored for powdery materials, ensuring stable powder flow, accurate fill weight, and clean bag sealing without powder contamination on the seal area.
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Multi-Product Parameter Memory: Touchscreen stores packaging process parameters for various powder products, enabling quick changeover between SKUs without resetting — reducing downtime and improving line efficiency for multi-product powder packaging operations.
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Color Mark Detection & Film Registration: Automatic color mark sensor ensures precise film registration for printed packaging films, maintaining consistent bag length and label alignment across all powder packaging runs.
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Standard Ribbon Date Coding: Integrated ribbon coding system prints production date, batch number, and expiry date on each sachet for full traceability and regulatory compliance in food and pharmaceutical powder packaging.
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Sponge Air Exhaust System: Removes excess air from powder-filled bags before sealing, improving bag appearance, reducing headspace, and ensuring a clean, professional presentation for retail powder sachets.
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Versatile Bag Format Support: Supports back seal, three-side seal, and four-side seal configurations with serrated or flat cut options — accommodating diverse powder packaging presentation needs from single-serve sachets to multi-portion pouches.
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304 Stainless Steel Construction: Full stainless steel body with sanitary design ensures aesthetic appeal, durability, and compliance with food safety and pharmaceutical hygiene standards for powder packaging environments.
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Safety Protection Systems: Comprehensive safety guards, emergency stop functions, and interlock systems meet enterprise safety management requirements and protect operators during powder packaging production.
Application Areas
Food Industry — Powder Materials:
- Milk powder: whole milk powder, skimmed milk powder, and full-cream milk powder for retail sachet and food service portion packaging
- Milk tea powder and coffee creamer: instant milk tea blends and non-dairy creamer powder for single-serve sachet packaging
- Instant coffee powder: spray-dried and freeze-dried instant coffee for single-serve and multi-portion sachet packaging
- Cocoa powder and drinking chocolate: food-grade cocoa and chocolate drink powder for retail and food service sachet packaging
- Seasoning powder: salt, pepper, five-spice powder, chili powder, garlic powder, onion powder, and curry powder for portion-control sachet and food service packaging
- Soup base powder and broth powder: instant soup mix and stock powder for single-serve sachet and food service packaging
- Starch powder: corn starch, potato starch, tapioca starch, and modified food starch for cooking ingredient sachet packaging
- Baking powder and yeast powder: leavening agent powder for portion-control and retail sachet packaging
- Protein powder and meal replacement powder: whey protein, plant protein, and nutritional meal replacement powder for health food retail sachet packaging
Pharmaceutical Industry — Powder Materials:
- Traditional Chinese medicine powder: herbal extract powder, concentrated TCM powder formulations for single-dose pharmaceutical sachet packaging
- Pharmaceutical granule powder: antibiotic powder, vitamin supplement powder, probiotic powder for single-dose dispensing and patient compliance packaging
- Oral rehydration salts and electrolyte powder: medical nutrition powder for pharmaceutical and health food retail sachet packaging
Chemical Industry — Powder Materials:
- Washing powder and laundry detergent powder: single-dose detergent powder sachets for consumer convenience and retail packaging
- Industrial cleaning powder: specialty chemical cleaning powder for single-use portion and industrial distribution packaging
- Water-soluble fertilizer powder: agricultural chemical powder for precise single-dose application and retail packaging
Material Compatibility:
- Free-flowing dry powder materials suitable for auger or volumetric metering
- Low-moisture powder formulations (typically <5% moisture content for optimal flow and seal quality)
- Fine to medium particle size powders without large agglomerates or fibrous content
- Not recommended for: sticky or high-moisture powders, powders with large granule chunks, or highly abrasive materials without custom metering configuration
Technical Specifications
| Model |
KL-300F Vertical Automatic Packaging Machine |
| Material |
304 Stainless Steel |
| Control System |
PLC System with Servo Drive |
| Seal Type |
Upper & Lower Horizontal Seal (Top and Bottom) |
| Bag Size Range |
Width: 30–150 mm × Length: 50–165 mm |
| Weighing Accuracy |
≤±1% |
| Packaging Speed |
20–40 bags/minute |
| Voltage |
Single-phase 220V / 50Hz |
| Power |
1.5 kW |
| Bag Styles |
Back seal (serrated/flat cut), Three-side seal (serrated/flat cut), Four-side seal (serrated/flat cut) |
Customization and Optional Configurations
The KL-300F can be configured with corresponding metering systems and conveying systems according to specific powder properties and filling requirements. Optional modules include auger fillers for fine powder metering, vacuum powder conveyors for dust-free material transfer, nitrogen flushing systems for extended shelf life and oxidation prevention in milk powder and pharmaceutical powder packaging, dust collection systems for clean production environments, and advanced thermal transfer or inkjet coding systems for batch traceability and regulatory compliance. Material contact parts can be upgraded to 316 stainless steel for corrosive or acidic powder formulations.
Delivery and Support
Keypack Intelligent provides comprehensive installation, commissioning, and operator training services for powder packaging applications. The KL-300F comes with standard warranty coverage, spare parts availability, and dedicated technical support to ensure continuous production uptime. Delivery timelines and customization options are available upon consultation to meet specific horizontal seal powder packaging requirements and production capacity needs.
