What are the differences and effects of plasma cleaning machines and corona machines in the medical device industry?

The surface properties of plastic materials are relatively low, which can affect adhesion, coating, and printing surfaces. Durability and quality are important factors in measuring the manufacturing of medical devices. It is said that plasma cleaning machines and corona machines can change the chemical structure of plastic material surfaces and increase surface tension. What are the differences between plasma cleaning machines and corona machines in the medical device industry, and what are their significant effects?

Low temperature plasma cleaning technology can remove micro pollutants by using plasma, which is composed of ionized gas with ions, electrons, and neutral atoms. This ionized gas produces reactive species. Zhenyi Co., Ltd. has rich experience in developing solutions for the medical device industry. We have our own internal testing facilities and provide free testing of parts.

Due to the fact that corona treatment is an adhesive treatment, it is now commonly used for surface treatment of medical equipment to adhere ink to its surface. Generally, medical products include plastic syringe barrels, medication bottles, transparent tubes for liquids, and even surgical gowns.

When the air on the surface of a product is exposed to high voltage charges, it generates a large amount of atomic energy. Oxygen molecules begin to decompose and bind with other molecules present in the product material, making the surface easier to adhere. The differences between plasma cleaning machines and corona machines in the medical device industry are mainly reflected in the following aspects:

working principle:

1. Plasma processing machine: By using an RF power supply to ionize gas under a certain pressure and gas environment, plasma is generated. These plasmas have high energy and can undergo physical and chemical reactions with organic pollutants and other contaminants on the surface of medical devices, decomposing and removing them. At the same time, they can also activate the surface, improve its hydrophilicity and adhesion.

2. Corona treatment machine: using high-voltage electrodes to generate corona discharge in the air, ionizing the air to form low-temperature plasma. The plasma generated by corona discharge mainly acts on the surface of medical devices, improving surface properties and enhancing surface adhesion and wettability through oxidation, etching, and other processes.

cleaning effect

1. Plasma cleaning machine: The cleaning effect is more thorough, and it can remove various organic matter, oil stains, photoresist and other pollutants on the surface of medical devices. It can also accurately control the depth and range of cleaning, and can uniformly clean medical devices with complex shapes and small sizes.

2. Corona machine: mainly used to improve the hydrophilicity and adhesion of material surfaces. It has a certain cleaning effect on mild surface pollution, but its cleaning effect on stubborn stains is relatively weak.

treatment material

1. Plasma cleaning equipment: medical devices capable of processing various materials, including metals, ceramics, plastics, glass, etc., with a wide range of applications.

2. Corona machine: It is usually more suitable for surface treatment of polymer materials such as plastics and rubber, and the treatment effect is relatively poor for materials with good conductivity such as metals.

Equipment cost and maintenance

1. Plasma cleaning machine: The equipment structure is relatively complex, the cost is high, and maintenance requires certain professional knowledge and skills, but its performance is stable and its service life is long.

2. Corona machine: The equipment cost is relatively low, and the operation and maintenance are relatively simple. However, the electrodes are prone to wear and need to be replaced regularly to ensure the stability of the treatment effect.

In summary, the selection of suitable surface treatment equipment for plasma cleaning machines in the medical device industry should be based on specific application requirements, materials and shapes of medical devices, production scale, and cost factors.