Butyl Sealant Coating Machine for Insulating Glass

Main Features

• Dual-side spacer coating: The Butyl Sealant Coating Machine for Insulating Glass applies butyl sealant simultaneously to both sides of aluminum spacers as they pass through the coating station, producing the primary seal for double and triple glazed units.
• PLC-controlled sequence: A programmable controller manages the heating, conveyor speed, extrusion timing, and stop cycles. Parameter sets for different spacer profiles can be stored and recalled, reducing setup time when switching between orders.
• Frequency-controlled conveyor: The drive motor uses an inverter for stepless speed adjustment. The operator sets the feed rate to match the required coating thickness and production pace.
• Timed extrusion control: Glue output and stopping are triggered automatically at the start and end of each spacer, minimizing excess material at the corners and manual intervention.
• Heated glue path: The glue tank and nozzle assembly are electrically heated. Temperature sensors in each zone provide feedback to the PLC, and the current values are displayed on the screen, with an over-temperature alarm to protect the sealant from degradation.
• Even glue application: The conveyor and nozzle arrangement are designed to maintain a consistent glue bead width along the length of the spacer, contributing to reliable primary seal performance. Typical bead width variation is within ±0.5 mm under stable operating conditions.
• Nozzle width adjustment under pressure: The coating nozzle width can be adjusted between 6 and 27 mm without releasing system pressure, which significantly speeds up changeover between spacer sizes — usually completed in under two minutes.

Technical Parameters

Insulating Glass Production Line Reference

1. Glass Cutting Machine (CNC or semi-automatic) — cuts glass sheets to the required dimensions.
2. Glass Edge Edging Machine — grinds and finishes the glass edges.
3. Double Glazing Making Machine — washes, dries, assembles the spacer frame, and presses the IGU.
4. Aluminum Spacer Bending Machine (semi-automatic or CNC) — bends aluminum spacer bars into frame shapes.
5. Desiccant Filling Machine (semi-automatic or CNC) — fills molecular sieve desiccant into aluminum spacers.
6. Butyl Sealant Coating Machine for Insulating Glass — applies butyl sealant to the spacer as the primary seal.
7. Two-Part Silicone Sealant Applicator — applies the secondary seal to the IGU edge.
8. Argon Gas Filling Machine — fills argon gas into the sealed IGU cavity.

Machine Functions

• Used as the primary seal application station in insulating glass production, coating butyl sealant onto both sides of the aluminum spacer profile.
• The PLC control system manages the heating circuit, conveyor speed, and extrusion cycle for automated operation.
• Inverter-controlled conveyor drive allows stepless speed adjustment to match the required throughput.
• Extrusion timing is set through the control panel; the machine starts and stops glue delivery automatically for each spacer.
• Temperature sensors in the glue tank and nozzle zones provide continuous monitoring, with values displayed on the interface. An upper temperature limit can be set to prevent overheating.
• The mechanical design aims for uniform glue bead application across the spacer length to support consistent seal quality.
• Nozzle width can be changed without depressurizing the system, allowing quicker changeover between spacer profiles. In typical operation, a trained operator can complete the adjustment in under two minutes.

Manufacturer & Support

LEBULANG, operating under the Lebulang Machine brand, has maintained a production facility in Jinan, China since 1996. The company manufactures door, window, and insulating glass processing equipment and handles R&D, component production, assembly, testing, and sales within a single organization. The Butyl Sealant Coating Machine for Insulating Glass is built under this integrated structure and supplied factory-direct with CE and ISO 9001 certification. A one-year warranty covers the main machine structure, excluding normal wear parts. Remote technical support and operation training are provided at no additional cost, and replacement parts can be dispatched globally. Each machine comes with an operation manual, video, and a pre-delivery test report.

FAQ

Q1: What aluminum spacer specifications does this machine support?

A: The standard configuration accepts spacer widths from 6 mm to 24 mm and heights from 5.5 mm to 12 mm. Non-standard profile tooling can be produced to order.

Q2: Is professional training required to operate the machine?

A: Operation follows the PLC interface, where parameters for different spacer types can be recalled from stored programs. An operation manual and video are supplied, and remote guidance is available during setup. Most operators become proficient within one working day.

Q3: Can it be integrated with an existing insulating glass production line?

A: The machine is built to interface with standard double glazing line conveyor heights and speeds. Integration details can be reviewed with the technical team during the order process.

Q4: What are the common wearing parts and how easy are they to replace?

A: Extrusion nozzles and sealing rings are the primary wear items. Both are designed for replacement without specialized tools. Spare parts are stocked and can be dispatched with regular shipments.

Q5: What warranty and after-sales support is included?

A: A one-year warranty applies to the main structure from the date of shipment. Remote technical support, including video diagnosis, is provided for the lifetime of the machine. Wear parts are available at factory cost.