Hot stamping paper slitting machine purchase guide: 5 core parameters determine the quality of slitting

When purchasing a hot stamping paper (anodized aluminum) slitting machine, the slitting quality directly affects the hot stamping effect and material utilization. The following are the 5 core parameters and purchase points that determine the quality of slitting to help you accurately match your needs:

1. Slitting accuracy (key indicator)

• Requirements: The slitting accuracy of hot stamping paper should be ≤± 0.05mm (high-end models can reach ±0.02mm) to avoid dislocation or exposure during hot stamping.

• Implementation:

◦ High rigidity tool holder: Precision tool holder driven by servo motor supports micron-level adjustment.

◦ On-line detection: equipped with CCD vision system or laser width gauge for real-time feedback and correction.

◦ Example model: Japan Iwata or Germany Arpeco slitting machine, the accuracy can reach ±0.01mm.

2. Tension control (to avoid tensile deformation)

• Requirements: The tension control of hot stamping paper (especially PET substrate) should be within ±0.5N to prevent the material from stretching or breaking.

• Technical solutions:

◦ Closed-loop tension control: magnetic particle brake + tension sensor, or direct drive servo system.

◦ Segmented control: independent tension adjustment for unwinding, traction and winding (such as unwinding tension 1~5N, winding 2~8N).

• Note: Taper tension control is required to prevent material deformation caused by over-winding.

3. Tooling system (determines trimming quality)

• Tool type:

◦ Round knife shear type: suitable for high-speed slitting (≥300m/min), smooth cutting edge without burrs.

◦ Pneumatic knife: used for low-speed precision slitting (such as special pattern bronzing paper), adjustable pressure to avoid crushing the material.

• Material Requirements:

◦ Tungsten carbide or diamond-coated knives with long life and non-adhesive adhesive (hot stamping paper adhesive easy sticking knives).

◦ Tool cooling system (air-cooled/water-cooled) to prevent melt of the adhesive line caused by high temperatures.

4. Winding quality (affecting the subsequent process)

• Core parameters:

◦ End face uniformity: 0.1mm ≤ staggered rewinding (automatic knife arrangement or EPC correction is required).

◦ Core adaptability: support 1"~3" paper core or plastic core, and have the function of inflatable shaft locking.

• Technical configuration:

◦ Surface take-up (contact) or center take-up (non-contact), selected according to the thickness of the material.

◦ The material of the pressure roller should be silicone or PU to avoid scratching the hot stamping surface.

5. Automation & Compatibility

• Automation Features:

◦ One-click order change: store process parameters of different specifications (width, tension).

◦ Waste edge treatment: automatic waste absorption or winding to avoid the edge of the bronzing paper sticking.

•Compatibility:

◦ Different substrates (PET, OPP, transfer films) and gel types (hot melt adhesives, water-based adhesives) can be processed.

◦ Modular design, support the subsequent installation of quality inspection machine or rewinding unit.

Other key considerations

• Speed matching: The slitting speed of conventional hot stamping paper is 50~200m/min, and the high-speed model needs to balance accuracy and efficiency.

• Environmental requirements: dust-free workshop (dust ≤ 100,000 level), humidity 40%~60% to prevent static electricity.

Summary: The purchase of hot stamping paper slitting machine needs to give priority to meeting the three cores of precision, tension and trimming, and then choose the degree of automation according to the output and budget. It is recommended to test the machine with materials, focusing on the flatness of the end face of the coil after slitting and the hot stamping transfer effect.