A powder coating metallic bonding machine, also called a metal powder bonder, is the bench-scale unit that fixes fine aluminum flakes onto powder coating resin particles before the powder goes to a spray gun. Chenxing's 1.5 kg sample bonding machine exists for one job: make a bonded metallic powder batch in a small quantity, spray it onto a trial board, and check the color and sparkle before committing to a full production mix.
The machine heats a 4 L hot mixing chamber with circulating hot water plus friction from the stirring blades. The batch stays just below the resin softening point, so the metal pigment sticks to the powder surface while the resin itself never melts or gels. A typical 1.5 kg charge runs at about 4 kg/h output. That is enough for color matching runs, customer sample boards and short metallic powder coating shifts without wasting raw material.
What is built into the machine:
A 4 L hot mixing chamber with a water jacket. The jacket flow loop holds the temperature window around the bonding point, and the blade friction adds controlled heat from the powder side.
A 1.5 kW motor on a frequency inverter drive. The inverter keeps the blade tip speed steady whether the batch is 1 kg or 2 kg, so the bonding result does not drift between small loads.
PLC control with up to 400 stored recipe sets. An operator recalls a saved curve, enters the batch weight and presses one-key start.
A PT100 probe in the material path. The PLC reads live temperature and trims water flow and blade speed against the set point, instead of waiting for overshoot.
A bottom discharge chute with a wipe-down surface. Between colors, a small purging powder charge cleans the chamber and the blade clearance before the next metallic shade.
A compact frame on leveling feet, about 1.1 m x 0.6 m x 1.3 m, in RAL9010 white and RAL5013 blue panels.
The bonding machine is a standalone unit, so it does not need a separate premix stage. On a floor that also runs dry blend compounding, it works beside the hot and cold mixer unit and the powder compounding system, but the bonder itself loads, heats, bonds and discharges in one pass.
The working sequence is fixed and repeatable. Metallic pigment and powder coating base go into the hot mixing chamber. Water circulation and friction raise the temperature to just below the resin softening point. The metal flakes stick to the resin particles while the powder keeps flowing freely, and the batch is discharged for spraying or packing. Temperature stays inside a safe window the whole time; if the charge drifts too high, the PLC cuts water heating and reduces blade speed before the resin softens into lumps.
| Item | Value |
|---|---|
| Product type | 1.5 kg sample metallic powder bonding machine |
| Batch load | 1.5 kg typical, 1 kg min, 2 kg max |
| Hot mixing volume | 4 L |
| Cold mixing volume | Not on standard unit, available on request |
| Output | About 4 kg/h for trial batches |
| Motor | 1.5 kW, frequency inverter drive |
| Control | PLC with PT100 temperature probe |
| Heating method | Hot water circulation plus friction heating |
| Total installed power | About 8 kW |
| Compressed air | 0.6-0.8 MPa |
| Machine weight | About 0.3 t |
| Footprint (L x W x H) | About 1.1 m x 0.6 m x 1.3 m |
| Recipe storage | Up to 400 parameter sets |
| One-key start | Yes |
| Nitrogen protection | Not on standard unit, available on request |
| Automatic bonding detection | Not on standard unit, available on request |
| Equipment color | RAL9010 white + RAL5013 blue, other RAL on request |
| Power supply | 380V 50Hz 3 phase standard, other voltages on request |
All figures above are confirmed at enquiry. No competitor model number is used on this page.
Loading a trial batch is straightforward. Weigh 1 kg to 2 kg of powder coating base and the matching metallic pigment loading, tip both into the chamber, and close the lid. Recall a stored recipe from the PLC screen or enter a fresh temperature curve. Press one-key start; the inverter ramps the blades, the water jacket brings the chamber up, and the PT100 feeds temperature back while the batch runs. Watch the discharge window on the controller. When the curve completes, open the bottom chute and collect the bonded powder into a clean container for spraying.
Between colors, run a short purging powder charge to lift residual pigment off the blades, then wipe the chamber wall, blade edges and chute. The whole color change takes a few minutes on a machine this size, which is why sample labs pick the 1.5 kg unit over a production bonder.
Metallic powder coating sample labs use it first. Powder coating production plants keep one next to the main bonder for quick color matching before a production mix. Paint-to-powder conversion projects use it to validate metallic recipes against liquid paint samples. Architectural profile finishers, furniture coaters, home appliance lines and automotive coating suppliers all run small metallic batches through the same steps, so the machine sits naturally beside the PVC profile extrusion, profile extrusion solutions, board and sheet line, UV marble sheet production, pipe extrusion systems, PVC pipe machinery and HDPE pipe line plants that Chenxing equips.
The unit also pairs with the rest of the powder handling floor. A powder conveying unit and a continuous powder suction loader keep base powder and additives moving, while the auxiliary equipment range, extruder machinery and pelletizing line machinery cover the compounding and reprocessing side of the same workshop. Typical layouts are collected in the coating application cases and recycling engineering support pages.
Some options are confirmed at enquiry rather than assumed. The standard 1.5 kg unit carries a 4 L chamber, 380V 50Hz 3 phase supply, and RAL9010 white with RAL5013 blue panels. If a plant runs a different voltage, or needs a larger trial chamber, tell us at enquiry and we quote the change. Cold mixing, nitrogen protection and automatic bonding detection are not on the standard unit; each can be added on request when the trial powder demands it. Other RAL colors are available for line consistency. These boundaries keep the base price predictable while leaving the door open for turnkey machine solutions, compounding package overview and EPC material processing projects.
The machine is built the same way as the rest of the Chenxing workshop output. The chamber is welded from stainless plate and the water jacket is pressure tested before assembly. The PT100 probe is calibrated against a reference thermometer. The inverter and PLC are wired on a marked panel, and every unit runs a trial batch with aluminum flake pigment before shipment. The trial confirms the temperature window, the blade speed and the discharge behavior on the actual powder the customer plans to bond. CE and ISO9001 certificates accompany the shipment, consistent with the about the Chenxing workshop page.
Export packing follows the same practice as previous lines. The machine is wrapped with PE film, fixed on a wooden pallet with steel strapping, and the PLC and inverter are protected against moisture during sea transport. Lead time for a standard 1.5 kg unit is about two to three weeks after confirmation, depending on the trial program in the workshop. Documentation includes the operation manual, wiring diagram, spare parts list and the trial report from the aluminum flake run. Additional files sit in the machine documentation area, and the latest factory news page carries shipping updates. The full scope is visible in the plastics machinery portfolio and more machine listings.
The standard unit takes 1 kg minimum and 2 kg maximum, with 1.5 kg as the typical charge. The inverter drive keeps blade speed steady across that range, so small batches bond the same as a full load.
A 1.5 kg charge runs at about 4 kg/h output, so a typical cycle lands around 20 to 25 minutes including heating and discharge. The exact time depends on the resin system and the metallic pigment loading.
Aluminum flakes are the common case, and the machine also handles other metal pigments that tolerate the same temperature window. The PT100 readout and recipe storage let you save a curve for each pigment type instead of re-tuning every time.
The control target stays just below the resin softening point, typically in the range that keeps the powder free flowing while the flakes stick. The exact set point depends on your resin; it is confirmed with a trial batch before shipment.
Run a short purging powder charge to lift residual pigment, then wipe the chamber wall, blade edges and discharge chute. On the 1.5 kg size the whole color change takes a few minutes.
The standard unit does not include nitrogen protection. If your metallic pigment is sensitive to oxidation, a nitrogen protection add-on is available on request.
The standard supply is 380V 50Hz 3 phase. Other voltages can be quoted when the inverter and PLC are specified for the plant supply, so mention the local voltage in the enquiry.
Up to 400 parameter sets. Operators recall a saved temperature curve, adjust the batch weight and press one-key start for the next shade.
Operation manual, wiring diagram, spare parts list and the trial report from the aluminum flake run. CE and ISO9001 certificates accompany the shipment, and the machine FAQ page lists common setup questions.
PE film wrap, wooden pallet and steel strapping, with moisture protection for the PLC and inverter during sea transport. The packing method follows the same standard used across the Chenxing machine range.
To quote accurately we need four things: the target powder type and resin system, the metallic pigment type and its loading percentage, the batch size you plan to run, and the plant voltage. Send those details to Nicole and we confirm the recipe window, the trial program and the delivery date. The machine FAQ section answers common setup questions, and the original product listing with view more machine details is available for reference.
Nicole works out of the Chenxing Machinery sales desk and handles metallic powder bonding enquiries directly. Reach her at ceo@cxsljx.com or +86 159 5118 7228. For a quicker start, use the request a bonding trial form on the contact page.