Progettate per imballaggi di alta qualità: come le macchine per il taglio di pellicole garantiscono un taglio impeccabile di pellicole alluminizzate e ad alta barriera

Providing slitting services for high-end packaging (such as aluminized films and high barrier films for food, medicine, and electronic products) is far from being capable of ordinary slitting. It requires extreme precision, cleanliness and zero damage.

The following are the core technical points and solutions of film slitting machines to ensure "flawless" aluminized film and high barrier film slitting:

First, understand the connotation of "flawless"

For this type of high-value film, "flawless" means:

1. No Scratches, No Highlights: Aluminized layers or barrier coatings are extremely fragile, and any minor scratches can ruin their appearance and barrier properties.

2. No burrs and no serrations: The cut edges must be smooth and flat, otherwise it is easy to tear and leak during subsequent bag making or packaging.

3. No dust pollution: tiny dust will be mixed in the film roll, affecting the appearance of the packaging and, more importantly, for food and pharmaceutical packaging, this is absolutely not allowed.

4. No defects caused by tension fluctuations: such as "cabbage" shaped bulges (too much tension), star-shaped folds (too little tension or deviation), etc.

5. Neat winding: The film coil must be tightly wound, the end face must be neat, and there are no string edges, convex ribs and other phenomena to ensure the stability of the customer's high-speed unwinding.

Second, key technologies and measures to ensure flawless slitting

1. Precise tension control system - the "soul" of slitting

Tension control is at the heart of the slitting machine and directly determines the rewinding quality.

• Automatic taper tension control: The system can automatically calculate and adjust the winding tension in real time, and the tension decreases according to the optimal curve as the roll diameter increases. This avoids the crushing and transfer of aluminum plating caused by "hard coiling" and the collapse caused by "soft coil".

• Multi-stage tension control: From unwinding, traction to winding, each link has independent tension sensors and control systems to ensure that the tension of the film material is constant and soft along the entire path, avoiding local stretching or relaxation.

• Pendulum roller or ultrasonic tension sensor: provides extremely sensitive and stable tension feedback for small tension changes during high-speed slitting.

2. Targeted slitting knife holder design - the "sharp weapon" of slitting

The slitting method is the key to ensuring the quality of the trimming edge.

• Blade material: Use a Diaphragm Blade or a ceramic blade. They are extremely sharp, wear-resistant, and resistant to metal shavings, allowing for clean, scalpel-like cuts with minimal burrs and dust.

• Metodo di taglio:

◦ Shear Cut: This is the preferred method for slitting aluminized and high-barrier films. By precisely adjusting the amount of overlap and depth of cut between the circular blade and the base cutter, a "scissor" shearing action is created to cut the film cleanly rather than "tearing" it, resulting in a smooth and burr-free cutting edge.

◦ Tool angle and installation: The installation angle and inclination of the tool are precisely designed and adjusted to ensure accurate cutting points.

3. Comprehensive cleaning and dust removal system - slitting "purifier"

Cleanliness is the lifeline of high-end slitting.

• Ion air rod: Before the film material enters the slitting knife and before winding, use the ion air rod to neutralize the static electricity generated by high-speed friction on the film surface to prevent the adsorption of dust in the air.

• Vacuum system: Install the vacuum port directly near the slitting point to immediately suck up the dust as soon as it is generated, avoiding contamination of the film surface or entanglement in the film roll.

• Contact roller cleaning: All rollers in contact with the membrane surface (guide rollers, traction guide rollers, pressure rollers) are made of special materials (e.g. silicone) and equipped with self-cleaning or periodic cleaning devices to ensure that they do not scratch the membrane surface or generate dust themselves.

4. Special guide roller and contact design - the "caring hand" of slitting

All parts in contact with the membrane must be designed to protect the membrane.

• Mirror Polishing Rollers: All guide roller surfaces are subjected to high-precision mirror polishing and dynamic balance correction to ensure an absolutely smooth surface without any defects that could scratch the film.

• Arch roller (bow roller) / flattening roller: Flatten the film before slitting to eliminate the original wrinkles and internal stress, and ensure that the film is flat and wrinkle-free during slitting.

• Airbag or spiral rollers: The pressure of the winding rollers is uniformly adjustable, which can provide sufficient contact pressure to make the film roll tight without crushing the aluminized layer due to pressure concentration.

5. Intelligent operation and diagnosis system - the "brain" of slitting

The high degree of automation of modern high-end slitting machines is a guarantee of quality consistency.

• Human-Machine Interface (HMI): Operators can preset and store process parameters (tension, speed, knife pressure, etc.) for various materials, enabling one-click recall and reducing human error.

• Automatic alarm diagnosis: the system monitors the operating status in real time, and immediately alarms or even stops the machine once there is abnormal tension, blade wear, edge material breakage, etc., to prevent the generation of bulk waste.

• CCD camera vision system (optional): real-time monitoring of trimming position and slitting quality, and automatic deviation correction (EPC) can be realized to ensure the consistency of slitting width.

Summary: How to choose a slitting machine "born for high-end packaging"

When you choose a slitting machine for aluminized film and high barrier film, you should focus on the following points:

1. Brand and reputation: Choose a professional brand with rich experience and successful cases in the field of high-end film slitting.

2. Core Configuration:

◦ Ask about the brand and control method of the tension control system (it must be fully automatic taper control).

◦ Confirm that the slitting method is the bottom cutter gasket shear type, and understand the material and brand of the blade.

◦ Check whether the dust removal system (ion air rod, vacuum suction) is complete.

3. Machinery manufacturing quality: Observe the overall rigidity of the machine, machining accuracy (especially the parallelism and horizontality of each roller), smoothness during operation, and noise level.

4. Technical support and service: Whether the supplier can provide professional process debugging, operation training and continuous after-sales service.

All in all, ensuring that the slitting of the aluminized film and the high barrier film is flawless is a "system engineering" composed of precision machinery, intelligent control, clean technology and rich process experience. The ultimate pursuit of every detail is for the final roll of impeccable high-end packaging materials.