Composite membrane

Composite membrane

● Material: CPP/PET, PE/PET

● Characteristics: There are two kinds of high temperature film and low temperature film, which can be fitted with adhesive paper, good adhesion strength and clean stripping; It is suitable for the automatic production and packaging of various disposable medical devices.

● Size: customized according to customer requirements.

Composite membrane is a kind of membrane material which is processed by a variety of different materials through a specific process. It has a variety of functions and performance, widely used in packaging, medical, construction, electronics and other fields. The preparation process of composite film is complicated, and different kinds of materials and formulations need to be used for mixing, coating, pressing and other processes to achieve the required performance indicators.

The main materials of composite film include plastic film, metal foil, paper, nonwovens and so on. These materials can be combined with each other to form multilayer structures by layering or coating, thus achieving different functions and properties. For example, adding metal foil can enhance the moisture-proof, oxygen-proof, blocking and conductive properties of the film; Adding plastic film can enhance the flexibility and wear resistance of the film. The addition of paper can increase the strength and stiffness of the film.

The preparation process of the composite film mainly includes coating, pressing and hot melting. First, the suitable substrate and coating material are selected, and the coating material is evenly covered on the surface of the substrate by the coating equipment; Then, the coated substrate and other materials are superimposed layer by layer, and each layer is tightly combined by heating and pressure to form a composite film; In addition, according to the need for cutting, printing, rewinding and other subsequent processing, to make a finished film.

Composite film has a variety of functions and properties, including moisture, oxygen, barrier, conductive, wear-resistant, insulation, fire, high temperature resistance, chemical corrosion resistance and so on. In the field of packaging, composite film is widely used in the packaging of food, medicine, cosmetics and other products, which can effectively extend the shelf life of products and prevent pollution; In the medical field, composite membranes are used to prepare medical dressings, operating kits and other products, which can protect wounds and avoid infection. In the field of construction, composite membranes are used to prepare building materials with waterproof, heat insulation, sound insulation and other functions, which can improve the service life and comfort of buildings.

In general, the composite membrane is a kind of material with various functions and superior properties, and has a wide application prospect. With the continuous progress of science and technology and the increasing market demand, the preparation process and application field of composite film will continue to expand, bringing more convenience and safety to human life and production.