What are the key points of the die-cutting process of BOPP synthetic label paper?

The main points of the die-cutting process of BOPP synthetic label paper mainly include the following aspects:

First, die cutting mode selection

The die cutting of BOPP synthetic label paper mainly adopts the half-cut through process, that is, the surface material is required to be cut into the label shape, and the base paper maintains its original state. This can easily remove excess paper edges (waste removal), and the die-cut label can be easily removed from the backing paper.

Second, die cutting equipment selection

According to the different die-cutting equipment, the die-cutting of BOPP synthetic label paper can be divided into two categories: flat die-cutting and circular die-cutting. Flat die cutting method is mostly used for off-line production, suitable for small batch of live parts; The circular die cutting method is more suitable for wired production, with the use of high-speed printing press, improve production efficiency.

Third, die cutting plate production

1.Material selection: Die-cutting plate bottom material should be selected high-density fiberboard (HDF), boardwood and other materials with good stability and durability. Auxiliary materials such as die cutting knives and indentation lines need to be selected according to the material and thickness of BOPP synthetic label paper and the special complexity of the graphics to ensure the die cutting effect and durability.

2.Design drawing: Use CAD software to accurately draw die-cut drawings to ensure the accuracy of die tangent, indentation line and label shape. In the design process, it is also necessary to consider the position of the die cutter and the indentation line, the waste discharge method and the bridge structure.

3.Processing accuracy: plate blanking and processing to ensure the surface flatness and dimensional accuracy, the cutting process to keep the saw blade or laser head vertical and stable to ensure that the cutting surface smooth and flat.

4.Assembly and debugging: When installing the die cutter and indentation line, ensure that the interface is located on the side of the label to avoid tearing the label during waste discharge. After the assembly is completed, debug, check the die-cutting effect, and fine-tune as needed.

Fourth, die cutting process control

1.Pressure adjustment: Adjust the pressure of the die-cutting machine according to the thickness and material of the BOPP synthetic label paper to ensure that the die-cutting depth is moderate, which cuts off the surface material without damaging the backing paper.

2.Speed matching: When connecting the die cutting, it is necessary to ensure that the die cutting speed matches the printing speed to avoid deviation or deformation of the label during transmission.

3.Waste discharge: Reasonable design of die-cutting graphics and bridge structure to ensure the smooth discharge of waste, avoid blocking the die-cutting machine or affecting the quality of die-cutting.

Fifth, die cutting quality inspection

1.Cut mark inspection: Apply the signal pen on the backing paper to check the penetration of the cut mark on the backing paper to ensure that the cut mark is clear and continuous.

2.Appearance check: Check whether the edge of the label after die-cutting is smooth and burr free, and whether the shape of the label is accurate.

3.Functional testing: For labels with special requirements (such as automatic labeling labels), functional testing is also required to ensure that there will be no problems during the use of the label.

Sixth, equipment maintenance and maintenance

Clean and maintain the die-cutting machine regularly, check the wear of the transmission parts, and replace the damaged parts. At the same time, maintain the sharpness of the blade, and regularly check and replace the worn blade to ensure the die-cutting quality and production efficiency.

In summary, the key points of the die-cutting process of BOPP synthetic label paper involve many aspects such as die-cutting mode selection, die-cutting equipment selection, die-cutting plate production, die-cutting process control, die-cutting quality inspection, and equipment maintenance and maintenance. In actual production, these points need to be flexibly adjusted and optimized according to the specific situation to ensure die cutting quality and production efficiency.