What are the common structural classifications of die-cutting products?

Die-cutting is a processing technique that uses punches to cut and shape products in a mold. Traditionally, die-cutting refers to the overall cutting and creasing process of printing and packaging materials. With the rise and development of electronic products, die-cutting has evolved from traditional packaging and printing materials to the molding and cutting process of soft, high-precision products such as adhesive labels, foam, mesh, and conductive materials, collectively referred to as die-cutting.

Die-cutting is no longer limited to the development and specific positions in the electronic or printing industry. Today, any product that can be automatically die-cut and creased using flat or rotary cutters is considered a die-cutting industry product. The scope of die-cutting extends beyond the electronic printing industry.

In production, we encounter various types of die-cutting products, but common die-cutting products can be classified by purpose and structure into the following categories:

1. Adhesive products: mainly used for sticking purposes, the double-sided adhesive is die-cut into the desired shape according to customer requirements. The general structure includes liner paper, adhesive, and release liner. In most cases, the liner paper can have a handle with the same shape as the adhesive, or it can be larger than the adhesive shape. There are also liner papers and release liners that sandwich the adhesive in between, using materials such as paper or PET. The release force is selected based on customer requirements.

2. Adhesive with mesh: primarily used for dust and water resistance. Mesh is die-cut into the desired shape and combined with adhesive for customer use. The general structure includes mesh, adhesive, and release liner. Different types of mesh can be selected according to specific needs, such as waterproof, non-waterproof, or coated with metal.

Another common form is the combination of face paper, adhesive, mesh, and release liner. This type of product not only provides dust protection with the mesh but also incorporates the adhesive's sticking function.

3. Adhesive with foam: mainly used for cushioning purposes. Foam is combined with adhesive and die-cut into the desired shape. The general structure includes foam, adhesive, and release liner. Another form includes liner paper, foam, adhesive, and release liner. This type of product provides shock absorption and sticking functionality.

The specific type of foam used will have different effects. These products are mostly used in the processing and assembly of electronic and digital products, as well as for bonding and fixing advertisements, electronic signboards, and LED boards.

4. Adhesive with foam and mesh: the general structure includes mesh, adhesive, foam, and release liner. This combination provides waterproof, dustproof, and shockproof functions or adheres electronic components to casings, ensuring no detachment or displacement.

The main function of these products is decorative with protective purposes. Some require high aesthetics. For precise electronic products, the mesh needs to have small and densely spaced holes, with higher data requirements.

5. Protective films: mainly used to protect the surfaces of other products, such as lenses. This type of product has strict requirements on appearance, with no scratches or dirt allowed.

Different protective film materials are selected based on the application method and specific requirements. Common materials include Nitto7568, P1020, and HR6030. Some products are used during the manufacturing process of other products for protection and are removed in subsequent stages, while others are directly applied to end products, requiring higher standards.

6. Adhesive with non-woven fabric: it also provides dust and water resistance. Common materials include 3M9448, which has good initial tack and adhesive properties, easy die-cutting, good stability, and excellent adhesion to plastics, rubber, and rough surfaces. It comes in white and black adhesive variations, suitable for various fields such as automotive, digital cameras, LCD displays, TVs, PDAs, LCD monitors, laptops, etc.

7. Others: such as conductive cloth, copper foil, aluminum foil, mainly used for shielding and conductivity purposes. These types of die-cutting products are used between heat sources and heat sinks to eliminate the air between them, leading to better heat dissipation and higher efficiency. Various thermal interface materials need to have excellent thermal conductivity and surface wetting properties.