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Medical PVC film performance characteristics and practical use
Apr 12, 2018

There are many kinds of medical membranes. Medical PVC membrane is one of them. It is a kind of thin film material made of PVC resin. The medical products like hemodialysis tubing, respiratory mask, and oxygen suction tube are all medical PVC membranes. The main finished product.

PVC itself is a kind of plastic with very large output. PVC resin is white or light yellow powder. Different additives can be added according to different purposes, so that PVC can exhibit different physical properties and mechanical properties. The reason why the medical PVC film can achieve the desired performance is because of adding an appropriate amount of plasticizer to the PVC resin.

The medical PVC film is formed by the blown film process and usually does not require drying. As a typical non-crystalline material, it can be dissolved in organic solvents such as cyclohexanone and tetrahydrofuran, so cyclohexanone is usually used to bond medical PVC. membrane.

In the actual use of PVC film often add stabilizers, lubricants, dyes and other additives, lead and antimony additives is the most effective heat stabilizer of PVC, but is forbidden to use in medical; and calcium and zinc additives often used as medical PVC film stabilizer.

Medical PVC films are distinguished by their hardness, softness and transparency. Their characteristics and uses are also different. Hard PVC does not contain or contain a small amount of plasticizers and has good tensile, flexural, and compressive strength and resistance. Impact properties can be used alone as a structural material. The soft medical PVC film can be processed into bags using high-frequency welding, such as bag infusion devices, urine bags and the like.

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