paper cans

The die-cutting process of paper cans is one of the key steps in the production process of paper cans. It is mainly used to cut the paperboard material into specific shapes and sizes for subsequent forming, folding and bonding. The precision and efficiency of the die-cutting process directly affect the quality and production cost of paper cans. The following is a detailed introduction to the die-cutting process of paper cans:

1. The basic process of die-cutting process
   Design and plate making:

According to the design drawings of the paper cans, make the knife lines and indentation lines of the die-cutting plate.

Use CAD software for precise design to ensure that the die-cutting plate matches the size of the paper cans exactly.

Material preparation:

Place the paperboard material on the die-cutting machine to ensure that the material is flat and wrinkle-free.

Die-cutting:

The paperboard is cut into the desired shape by the pressure of the die-cutting machine.

At the same time, the indentation line is made to facilitate subsequent folding.

Waste removal:

Remove the excess scraps after die-cutting and retain the desired cardboard shape.

Inspection:

Check whether the size, shape and indentation line of the cardboard after die-cutting meet the requirements.

2. Key equipment for die-cutting process
   Die-cutting machine:

Equipment used to cut cardboard into specific shapes.

Common types include flat die-cutting machine, rotary die-cutting machine and laser die-cutting machine.

Die-cutting plate:

Made of high-density wood or steel plate, with knife lines and indentation lines installed on it.

Waste removal equipment:

Used to remove waste after die-cutting and improve production efficiency.

Conveying system:

Automatically convey cardboard materials to the die-cutting machine and output the finished products after die-cutting.

3. Technical points of die-cutting process
   Knife line design:

The shape and position of the knife line must be accurate to ensure the accurate size of the cardboard after cutting.

The height and angle of the knife line need to be adjusted according to the thickness of the cardboard.

Indentation line design:

The depth and width of the indentation line affect the folding effect of the paper can.

Too shallow an indentation will make folding difficult, and too deep an indentation may cause the cardboard to break.

Die-cutting pressure control:

Excessive pressure will damage the cardboard, and too little pressure will result in incomplete cutting.

Adjust the die-cutting pressure according to the thickness and material of the cardboard.

Material adaptability:

Different thickness and material of cardboard require different die-cutting parameters.

For composite cardboard or laminated cardboard, special attention should be paid to the wear of the die-cutting knife line.

4. Common problems and solutions of die-cutting process

Problem 1: Inaccurate die-cutting size

Reason:

Wrong die-cutting plate design.

Cardboard material stretches and deforms.

Solution:

Recheck and correct the die-cutting plate design.

Control the humidity of the cardboard material to avoid deformation.

Problem 2: Unclear indentation line

Reason:

Insufficient indentation line depth.

Uneven die-cutting pressure.

Solution:

Adjust the height and depth of the indentation line.

Check the pressure distribution of the die-cutting machine to ensure uniformity.

Problem 3: Burrs on the die-cutting edge

Reason:

The knife line is worn or not sharp enough.

The cardboard material is too hard.

Solution:

Replace or polish the knife line.

Choose the appropriate cardboard material.

Question 4: Cardboard sticks after die-cutting
Reason:

The die-cutting pressure is too high.

There is glue or film on the cardboard surface.

Solution:

Adjust the die-cutting pressure.

Clean the glue or film residue on the die-cutting plate and the cardboard surface.

5. Development trend of die-cutting process
   Automation and intelligence:

Use automated die-cutting equipment to improve production efficiency and accuracy.

Introduce intelligent control system to monitor the die-cutting process in real time.

High-precision die-cutting:

Use laser die-cutting technology to achieve high-precision cutting of complex shapes.

Environmentally friendly material adaptation:

Develop die-cutting processes suitable for environmentally friendly materials (such as degradable cardboard).

Multi-functional integration:

Integrate die-cutting, creasing, waste removal and other processes into one device to reduce production links.

6. Application scenarios of die-cutting technology
   Food packaging paper cans:

Used for packaging of biscuits, candies, milk powder and other foods.

Tea packaging paper cans:

Used for sealed packaging of high-end tea.

Cosmetic packaging paper cans:

Used for exquisite packaging of skin care products, perfumes and other products.

Gift packaging paper cans:

Used for personalized packaging of holiday gifts and souvenirs.

By optimizing the die-cutting process, the production efficiency and quality of paper cans can be improved to meet the packaging needs of different industries. In actual production, it is necessary to flexibly adjust the die-cutting parameters according to the specific material and product requirements to ensure the stability and reliability of the process.