How to make paper shell
Paper shells, also known as corrugated cardboard, are common packaging materials in daily life and are widely used in logistics, express delivery, home appliance packaging and other fields. This article will introduce the production process of paper shells in detail, and attach relevant data to help readers fully understand the production process of this material.
1. Basic structure of paper shell
Paper shells are usually composed of three layers of materials: surface paper, corrugated paper and lining paper. Corrugated paper is formed into a wavy structure through special processing, giving the paper shell good compression resistance and cushioning properties. The following are typical structural data of paper shells:
| Number of layers | Material name | Function |
|---|---|---|
| Outer layer | tissue | Provides surface flatness and print adaptability |
| middle level | corrugated paper | Provides compression resistance and cushioning properties |
| inner layer | inner paper | Increase overall strength |
2. Paper shell production process
The paper shell production process can be divided into the following steps:
1.Raw material preparation: The main raw materials of paper shells are kraft paper and corrugated paper, which need to undergo strict screening and quality testing.
2.Corrugated paper processing: Corrugated paper is processed into a wavy shape by a corrugating machine. Common corrugated types include type A, type B, type C, etc. Different types of corrugated paper have different compression resistance properties.
| Corrugated type | Corrugated height (mm) | Compressive strength |
|---|---|---|
| Type A | 4.5-5.0 | high |
| Type B | 2.5-3.0 | in |
| Type C | 3.5-4.0 | Middle to high |
3.bonding: Corrugated paper, surface paper, and lining paper are bonded together through adhesive to form a complete corrugated board. Commonly used adhesives include starch glue and synthetic glue.
4.dry: The bonded cardboard needs to be dried to ensure that the adhesive is completely cured and the cardboard reaches the required strength.
5.Cutting and shaping: The dried cardboard is cut into different sizes according to the needs, and processed into the required shapes through a die-cutting machine, such as cartons, cartons, etc.
3. Application areas of paper shells
Paper shells are widely used in the following fields because of their lightness, environmental protection and low cost:
| Application areas | Specific use |
|---|---|
| Logistics packaging | Express boxes, transport packaging |
| Home appliance packaging | Outer packaging of large home appliances such as TVs and refrigerators |
| food packaging | Fruit boxes, food gift boxes |
| Industrial packaging | Protective packaging of mechanical equipment and parts |
4. Environmental protection advantages of paper shells
As a recyclable material, paper shell has significant environmental advantages. The following is the environmental comparison data of paper shell and plastic packaging:
| Comparative item | paper shell | plastic packaging |
|---|---|---|
| Degradability | high | low |
| recovery rate | More than 80% | Below 30% |
| carbon emissions | low | high |
5. The future development trend of paper shells
With the improvement of environmental awareness and technological advancement, the paper shell industry is developing in the following directions:
1.Lightweight: By improving materials and production processes, the weight of the paper shell is reduced while maintaining its strength.
2.Intelligent: Embedding RFID and other technologies into paper shells to achieve logistics tracking and intelligent management.
3.Multifunctional: Develop paper shells with waterproof and moisture-proof functions to expand their application scope.
Although the production process of paper shells is simple, its importance in the packaging industry cannot be ignored. Through continuous technological innovation, paper shells will play a greater role in the future and contribute to environmental protection and sustainable development.
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