FQL450LA

FQL450LA Automatic L-Bar Sealer – Shrink Wrapping Machine

Product Description

The SunAura FQL450LA is an automatic L-bar sealer designed for high-speed shrink wrapping applications. This machine uses an L-shaped sealing blade to cut and seal shrink film around products in a single operation, creating a secure package that is then conveyed through a shrink tunnel for final shrink wrapping. With a capacity of 1200-1600 packages per hour, the FQL450LA is ideal for medium to high-volume packaging lines in food, beverage, cosmetics, pharmaceutical, and consumer goods industries.

The machine features a servo-driven film feeding system for precise film positioning, an automatic product feeding conveyor, and a pneumatic L-bar sealing head that provides clean, secure seals on polyolefin (POF), PVC, and PE shrink films. The 170-degree sealing temperature ensures reliable seal strength across various film types and thicknesses. The compact machine design (1700x1000x1400mm) fits well in existing packaging lines, while the 330 KG weight provides stability during high-speed operation.

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Technical Specifications

Key Features of FQL450LA L-Bar Sealer

• Automatic L-bar sealing blade for clean, precise cuts on shrink film
• Servo-driven film feeding system for accurate film positioning and minimal waste
• High capacity of 1200-1600 packages per hour for efficient production
• Pneumatic sealing head with adjustable temperature up to 170 degrees C
• Compatible with POF, PVC, and PE shrink films
• Automatic product feeding conveyor for continuous operation
• Adjustable film width and package size for versatile applications
• PLC control system with touch screen HMI for easy operation
• Photoelectric sensor for precise film cutting position detection
• CE certified with safety guards and emergency stop

Applications of FQL450LA Shrink Wrapping Machine

• Food and Beverage: Shrink wrapping for bottled beverages, canned goods, snack multipacks, and food gift sets. The L-bar sealer creates tight, professional packages for retail display.
• Cosmetics and Personal Care: Packaging cosmetic bottles, skincare product sets, and personal care items in shrink film for tamper evidence and retail presentation.
• Pharmaceutical Products: Shrink wrapping medicine boxes, healthcare product sets, and pharmaceutical packages for tamper-evident security and product protection.
• Consumer Goods: Packaging stationery sets, household items, toys, and gift sets in shrink film for retail display and product protection.
• Electronics and Accessories: Shrink wrapping electronic accessories, cables, chargers, and small electronic devices for retail packaging and anti-tamper protection.
• Print Materials: Packaging books, magazines, printed materials, and promotional materials in shrink film for protection during distribution and retail display.

How L-Bar Sealing Technology Works

L-bar sealing is one of the most efficient methods for shrink wrapping products. The L-shaped sealing blade consists of two sealing wires: a horizontal wire and a vertical wire that form an L shape. When the sealing head descends, both wires simultaneously cut and seal the shrink film, creating a complete package in a single operation.

The process begins with the product placed on the infeed conveyor. As the product moves forward, the film is drawn from the film roll and wrapped around the product. The L-bar sealing head descends, cutting and sealing the film on three sides (front, bottom, and side) in one motion. The sealed package is then conveyed to the shrink tunnel, where heat causes the film to shrink tightly around the product.

The FQL450LA uses a servo-driven film feeding system that precisely controls the film length for each package, minimizing film waste. The photoelectric sensor detects product position to ensure the film cut occurs at the correct point. The pneumatic sealing head provides consistent sealing pressure and temperature for reliable seal quality across different film types and thicknesses.

Frequently Asked Questions

What types of shrink film does the FQL450LA support?

The FQL450LA supports polyolefin (POF) shrink film, PVC shrink film, and PE shrink film. POF film is the most popular choice for retail packaging due to its clarity, strength, and food-safe properties. PVC film is economical and suitable for non-food applications. PE film is thicker and used for heavier products or industrial packaging. The machine can handle film thicknesses from 15 to 60 microns. The sealing temperature should be adjusted based on the film type for optimal seal quality.

Does the FQL450LA include a shrink tunnel?

The FQL450LA is an L-bar sealer only. It cuts and seals the shrink film around the product but does not shrink the film. A separate shrink tunnel (such as our BSD series) is required to apply heat that causes the film to shrink tightly around the product. We offer combined sealer and tunnel models (such as the ASS450-AI) that integrate both functions in a single machine. For the FQL450LA, we recommend pairing it with a BSD400 or BSD450 shrink tunnel for optimal results.

What is the maximum product size the machine can handle?

The FQL450LA can handle products up to 500mm in length, 350mm in width, and 110mm in height. The maximum package size is determined by the L-bar sealing area dimensions. For products larger than these dimensions, we offer custom L-bar sealer models with extended sealing widths. The product height is limited by the clearance between the conveyor and the sealing head. contact us with your product dimensions for a recommendation.

How fast can the machine package products?

The FQL450LA can package 1200-1600 products per hour, depending on product size, film type, and operator feeding speed. The servo-driven film feeding system enables fast, precise film positioning, while the pneumatic sealing head provides quick sealing cycles. For optimal throughput, products should be consistently spaced on the infeed conveyor. An automatic product feeding system can be integrated for fully automated operation.

What compressed air supply is required?

The FQL450LA requires compressed air at 0.4-0.6 MPa with a flow rate of approximately 100L/min for the pneumatic sealing head and film feeding system. A standard industrial air compressor with a 50L tank is sufficient. The machine includes an integrated air filter, pressure regulator, and lubricator (FRL unit) for clean, stable air supply. Ensure the air supply is connected before operating the machine, as the sealing head requires pneumatic pressure to function.

How do I adjust the machine for different product sizes?

Product size adjustment on the FQL450LA involves setting the film width, film feed length, and conveyor speed. The film width is adjusted by repositioning the film roll holder and film guide rods. The film feed length is set through the HMI touch screen based on product length. The conveyor speed is adjusted to match the packaging speed. Changeover between different product sizes typically takes 5-10 minutes. The sealing temperature may also need adjustment when switching between different film types.

What maintenance does the machine require?

Daily maintenance includes cleaning the L-bar sealing blade of film residue, checking the film roll supply, and wiping the conveyor. Weekly maintenance involves inspecting the pneumatic system for air leaks, cleaning the photoelectric sensor, and lubricating the film feeding guide rails. Monthly maintenance includes checking the sealing blade for wear, verifying the temperature controller accuracy, and inspecting all moving parts. The non-stick coating on the sealing blade should be replaced when it shows signs of wear to prevent film sticking.