How to choose a die cutter

High-quality cutting knife should have the characteristics

1. Select high-quality steel: The steel has a compact molecular structure, and the blade is full of soft-edged blades. There is not much rebound after bending, and the molecular structure remains tightly connected.

2. Superb surface decarburization treatment: The more brittle carbon molecules are removed from the surface of the die cutter, so that the blade will not be embrittled when it is bent, resulting in the blade body being broken. Like a layer of soft leather to wrap the blade, it is more convenient for bending.

3 excellent heat treatment: according to different requirements of customers to adjust the mold section knife to different hardness, and the knife body is soft and easy to bend and adjust the hardness of the blade peak to make it durable.

4. Extremely high precision: The higher the precision of the die cutter, the shorter the pressure adjustment time of the die cutting machine, the lower the mechanical wear, the faster the production speed, and the better the die cutting effect. In particular, die-cutting of self-adhesive labels and non-precision die-cutting cutters are fundamentally different.

5. Should have more specifications, models for customers to choose: Die cutter choice should have more specifications, models for customers to choose: die cutter choice should be based on three principles to choose: (1) production is long version; (2) whether the customer's request is high; (3) whether the die-cut pattern is complicated. Choosing the most suitable model and specification die cutter is the key to die-cutting quality assurance.

What differentiates quality and inferior die cutters?

1. The blade with quenched blade is soft because of the blade body, and the blade peak is hard. It is usually called soft knife. In the soft knife, the thickness of the quenched area has a great influence on the durability. The larger the quenched area, the greater the ability to support the mechanical pressure transmitted by the blade, and the less the contact area between the harder blade peak and the softer blade body. At that time, the hard sector will sag into the soft sector, or it will easily fall off, and the bearing capacity will be insufficient or reduced to zero, that is, the life of the knife will be shortened. Of course, it is impossible to increase the area of ​​the quenched layer in an infinite system. Excessive area of ​​the quenched layer will affect the bending of the die cutter. Because of the importance of the quenched layer, plus the larger the area of ​​the quenched layer, the higher the cost of the knife, so some unscrupulous manufacturers even use the color coating method to apply a layer of ink on the blade peak to say quenching treatment to deceive users. As a user, you should have a clear-headed mind and do not be tricked by counterfeiters.

2. The higher the precision of the die cutter, the better the quality and the higher the grade. Taking Bohler die cutter as an example, the precision is ±0.02mm, and the accuracy of type A, B and C cutters can reach ±0.007mm, which is similar to the long-term use of A-type cutters. Accuracy can be up to ±0.007mm (Class B, Class C is the same), which is easy to use. As long as the user specifies the purchase of the same type of knife, the price does not change, but the accuracy of the workmanship can be obtained at ± 0.08mm, while the ordinary make-up paper is only 0.05mm thick, the tolerance is difficult to use to make up the bottom of the paper. Especially for adhesive die-cuts with extremely high precision requirements, these rough die cuts are fundamentally different.

3. The selection of different hard bottom varieties will help adapt to different needs. Some brands have only one or two hardness knives, which are simply not adequate for die-cutting thicker materials. On the other hand, if only a very hard knife is used, it is quite a problem for the complex pattern of wood molding. Or sometimes the user uses a unified knife to produce different types of die cuts, which fails to achieve the best results. Therefore, multi-category selection is the characteristic of high-quality brands.

The choice of high dwarf peaks and knife patterns

When choosing a high-quality die cutter, you should pay attention to selecting the peak and dwarf cutters according to the thickness of the die-cutting material. The peak cutter can not only cut thin paper but also cut thick paper, and can be used on a single-sheet automatic die-cutting machine. It can also be used on a hand-operated die-cutting machine that cuts two or three sheets of paper at the same time, and has a wide range of applications. However, if the user's products are single, and all are thin cardboard, such as cigarette packs, long-term die-cutting cigarette packs less than 400 grams thick, then we recommend the use of dwarf knife, because these plants usually use automatic die cutting machine, Cut sheet paper, fast, large number, dwarf knife can be enough. For longer and more durable requirements, because the peak stiffness of the dwarf blade is higher than the peak, the pressure is less turbulent and the durability is longer.

In addition, when selecting high-quality die cutters, it is necessary to pay attention to the horizontal stripes or ruled edges of the blade, and the cutters with horizontal stripes have better effect on die-cutting paper, and are more durable, with less chaos and higher precision. It is not easy to crack, but the ruled surface of the knife seems to be sharp, and it is cut on the surface of the steel plate when it is die-cut. It is easy to blunt when it is not long, and it is also easy to crack after being bent, so in addition to die-cut film products, Straight-line knife is more smooth, die-cut paper products is best to use cross-cutting die cutter.

At present, the high speed of the automatic die-cutting machine demands more and more high demands on die cutters, and the die-cutting die cutters produce high-level products for research and development. Leading the world of die cutting knife production, Austria's Bohler launched the Supreme knife, which is coated with a special metal coating on the blade of a high-quality die cutter to fill in the capillary pores and clearance pits. The peak is more smooth, the friction between the knife and the paper is smaller, the mechanical wear is reduced, and paper dust is not easily generated. More suitable for die-cutting recycled paper; especially high-demand products, such as kits, food boxes, packaging boxes that do not stick paper dust should use Supreme knife, up to 2 million die-cutting, is the most high-end model Cutters are called "king cutters".