The material of the negative pressure drainage bottle and its heat-sealing machine manufacturing process

The negative pressure suction device consists of a pressure regulator, a drainage bottle (also called a collection bottle or suction bottle), and tubing. The collection bottle has two tubing interfaces: one connects to the negative pressure terminal, and the other connects to the working chamber. When the negative pressure terminal is connected, a negative air pressure is generated inside the collection bottle, which guides waste (such as contaminated blood or sputum) through the other tubing into the collection bottle.

Negative pressure drainage bottles are now widely used in the medical field. When patients have large amounts of pleural effusion or pneumothorax, they can effectively help patients drain effusion, infectious materials, etc., avoiding repeated punctures and reducing the risk of secondary infection. The material of the negative pressure drainage bottle and the welding method of the high-frequency heat sealing machine are key factors affecting its quality and effectiveness. This article will provide a detailed introduction to these two aspects.

I. Material Selection for Negative Pressure Drainage Bottles

1. Glass Material

Glass is a common material for manufacturing medical devices, characterized by high transparency, good corrosion resistance, and resistance to deformation. Therefore, many negative pressure drainage bottles use glass as the main material. However, glass negative pressure drainage bottles are relatively heavy and fragile, requiring special care in their use and maintenance.

2. Polyethylene Material

Polyethylene is a lightweight, corrosion-resistant plastic material commonly used in the manufacture of disposable medical devices. Compared to glass, polyethylene negative pressure drainage bottles are lighter, easier to process and mold. They are also relatively cheaper, reducing the cost of medical equipment. However, due to its poor high-temperature resistance, it cannot come into direct contact with high-temperature objects, so care must be taken to avoid burns during use.

II. Welding Methods of High-Frequency Heat Sealing Machine

1. Preheating Treatment

Before welding with a high-frequency heat sealing machine, the workpiece needs to be preheated to improve the quality and strength of the weld. The preheating time is generally about 5 minutes, with the temperature controlled at around 200°C. Furthermore, care must be taken to avoid excessively high or low preheating temperatures, as this can affect the quality and strength of the weld.

2. Selecting a Suitable Welding Head Clamp

To ensure the stability and accuracy of the welding process, a suitable welding head clamp must be selected. Generally, commonly used welding clamps include several types such as round clamps, flat clamps, and V-shaped clamps. Selecting the appropriate clamp based on the specific product shape and size is crucial.

3. Adjusting High-Frequency Heating Power and Frequency

Before high-frequency heat sealing welding, the high-frequency heating power and frequency need to be adjusted according to the specific product material and thickness.

Generally, higher power and higher frequency result in better weld quality and strength. However, it's important to note that excessively high power and frequency may lead to over-welding or scorching. Therefore, careful mastery of power and frequency adjustment techniques is essential when using a high-frequency heat sealing machine.