Full-Auto Pp Intermittent Gluing Production Line

As the original manufacturer and direct supplier of the Full-Auto Pp Intermittent Gluing Production Line in China, Pulan offers an integrated solution covering slitting, independent glue dispensing, air cooling, and pleating/forming. The equipment allows for customizable glue bead spacing and pleat heights; 50 independent solenoid valves ensure precise intermittent or continuous gluing, while a dual-servo synchronous drive prevents filter media deformation. Units are available in stock, and samples can be provided; the product comes with a one-year warranty and CE certification. Whether for high-volume orders or specialized process requirements, this production line enables stable manufacturing of separator-free filter elements featuring flat end faces and precise glue positioning.

What is a Full-Auto Pp Intermittent Gluing Production Line？

The Fully Automatic PP Intermittent Gluing Production Line is an automated system designed for the gluing and pleating of filter media—such as fiberglass—used in separatorless HEPA filter elements. It comprises seven key components: a media feeding mechanism, a slitting unit, a gluing unit, a cooling fan assembly, a pleating mechanism, a discharge conveyor, and a hot-melt adhesive unit. Servo motors synchronously drive the paper-feeding and pleating rollers to ensure precise media transport and forming; the system supports both continuous and intermittent gluing, enabling the efficient production of separatorless filter elements.

Working Principle

Servo motors synchronously drive the paper-feeding rollers and pleating rollers to ensure the filter media transport speed matches the pleating speed. Independent solenoid valves control each adhesive nozzle to enable intermittent or continuous dispensing. Cooling fans accelerate the curing of the hot-melt adhesive, and an extended conveyor facilitates subsequent cutting.

Production Process

1. Filter Media Threading: Thread the pre-folded or creased filter media sequentially through the lower tensioning roller, work table, paper-feeding roller, and tensioning roller to the slitting anvil roller.
2. Slitting (Optional): Adjust the spacing between slitting blades according to the product width and slit the filter media.
3. Adhesive Application: Pass the filter media between the left and right dispensing heads; adhesive is sprayed according to the set mode (continuous or intermittent), with independent control for each nozzle.
4. Cooling: After adhesive application, the filter media passes between upper and lower cooling fans to rapidly cure the hot-melt adhesive.
5. Pleating/Forming: The filter media enters the pleating mechanism, where upper and lower pleating blades press together at intervals corresponding to the fold height, creating a continuous pleated waveform.
6. Stable Output: After pleating, the filter media is discharged via an extended conveyor, facilitating subsequent cutting.

Product Features

1. Continuous/Intermittent Dual Modes: Supports both continuous and intermittent adhesive application to meet the requirements of various product specifications.
2. Independent Dispensing Control: Features 50 dispensing nozzles (2×25), each controlled by an independent solenoid valve, allowing for precise and adjustable adhesive volume.
3. Servo Drive System: Synchronized drive for paper-feeding and corrugating rollers ensures smooth operation and high product precision.
4. Cooling Fan System: Accelerates hot-melt adhesive curing, thereby increasing production efficiency.
5. Extended Conveyor Mechanism: Ensures sufficient curing of the hot-melt adhesive, facilitating subsequent cutting.
6. Touchscreen Interface: Offers intuitive parameter settings and supports both Chinese and English interfaces for ease of operation.
7. Wide Application Range: Accommodates filter media widths up to 730mm and product widths ≤700mm; pleat height is continuously adjustable between 10mm and 100mm.
8. Safe and Reliable: Equipped with multiple safety measures, including an emergency stop, protective guards, and grounding protection.

Technical Specifications Table

Installation Instructions

1. Site Selection: Install Full-Auto Pp Intermittent Gluing Production Line in a suitable workspace or on the filter element assembly line; ensure the floor is level, clean, and well-ventilated, and avoid areas with high temperatures or excessive dust.
2. Layout and Positioning: Mark the equipment's installation centerline based on the designated location.
3. Unpacking and Handling: Remove the packaging crate and dust-proof film; use a forklift with a capacity of at least two tons to move the machine into its fixed position.
4. Clearance Requirements: Maintain a clearance of at least 1 meter from walls on the left and right sides, and at least 1.5 meters at the front and rear.
5. Connection and Securing: Connect and secure the front and rear machine frames, then level the machine.
6. Power Connection: 380V/50Hz; protective grounding is mandatory, with the ground wire connected to the machine base bolt.
7. Air Supply Connection: Air supply pressure must be 0.6 MPa; connect only after verifying the pressure meets requirements.

FAQ

Q1: What types of filter elements is the Full-Auto Pp Intermittent Gluing Production Line suitable for?
A: It is suitable for separator-less high-efficiency air filter elements, particularly for continuous or intermittent gluing and pleating of filter media such as glass fiber and synthetic fiber.

Q2: Can the equipment perform intermittent gluing with varying glue bead lengths?
A: Yes. By configuring "glue length" and "fold pitch" parameters on the touchscreen and utilizing the staggered glue-break mode, the machine can execute intermittent gluing with varying bead lengths to meet complex process requirements.

Q3: How can I prevent the filter media from jamming or tearing during the pleating process?
A: The equipment uses a single servo motor to drive both the paper feed roller and the pleating roller synchronously, fundamentally preventing media accumulation or stretching. Further optimization is possible by adjusting the pleating roller gap and the spacing of the pleating pins.

Q4: How can I quickly determine if a glue nozzle is clogged during daily production?
A: You can manually trigger the specific nozzle via the touchscreen to observe the glue flow; alternatively, check the product for missing or thinning glue beads at the corresponding locations. The integrated self-diagnostic alarm system will also alert you to any anomalies.
Q5: Which components are most prone to wear after prolonged operation? A: The slitting blade edge, pleating fingers, drive chains, gear meshing surfaces, and pneumatic solenoid valve seals are components prone to wear; regular monthly inspections are recommended.

Q6: Which parts need adjustment when changing product specifications (width, pleat height)?
A: Adjustments are required for: the spacing of the workbench guide rails, the position of the slitting blade, the gap between the left and right glue dispensing heads, the height of the dispensing head assembly, the gap between the upper and lower pleating fingers, and the longitudinal position of the pleating finger assembly; additionally, parameters such as pleat height and glue bead length must be updated on the touchscreen.

Q7: Under what circumstances should the cooling fan speed be adjusted?
A: Fan speed adjustments may be necessary when there are significant changes in ambient temperature or when switching to a different type of hot-melt adhesive. If the adhesive cures too quickly, it becomes brittle; if it cures too slowly, deformation may occur. Fine-tuning based on the adhesive's recommended curing time and actual on-site results is generally recommended.

Q8: What could be the cause if the product's end face appears uneven during production?
A: Primary causes include: misalignment of the filter media from the preceding process; uneven gaps between the upper and lower pleating rollers; or inconsistent insertion depth of the pleating fingers into the pleating roller grooves. These issues should be investigated and adjusted one by one.
Q9: The standard glue bead spacing is 25.4mm; can other spacings be customized?
A: Yes. Pulan supports the customization of glue dispensing manifolds with varying bead spacings and quantities; specific designs can be tailored to meet the customer's requirements for filter element bonding strength.

Q10: How should the equipment be maintained when not in use for an extended period?
A: Disconnect the power and air supplies, clean residual adhesive from roller surfaces and pleating fingers, apply anti-rust oil to the slitting blade, lubricate the drive chains, and either empty the hot-melt adhesive unit or seal the adhesive for storage. Manually rotating moving parts once a month is recommended to prevent rusting.

Q11: Can the slitting blade be sharpened in-house after becoming dull?
A: Yes, but it is recommended that a professional sharpener perform the task to ensure the blade edge remains straight. If the blade edge is severely damaged, replacing it with an original manufacturer part is recommended.

Q12: How can the equipment be safely restarted after a sudden power outage during operation?
A: First, turn off the main power supply and check for any jammed moving parts; remove any residual adhesive. Then, pull out approximately 1 meter of filter material from the pleating mechanism, re-thread it, and start the machine following the standard startup procedure.