Main factors affecting the permeability of glass fiber polymer medical bandages

The main factors that affect the permeability of glass fiber polymer medical bandage bookmark0 bookmark1 Xie Wei sales Nanjing Glass Fiber Research and Design Institute Nanjing Haotian Technology Industrial Co., Ltd., Jiangsu Nanjing fiberglass polymer medical bandage products in the United States has 18 years of history, But in our country it is a brand new product. The fiberglass polymer bandage is a product made by impregnating a polyurethane resin with a fiberglass knitted tape. It is mainly used to support and protect the patient's bones and soft tissues, relieve pain, swelling, and muscle spasms. It is commonly used in domestic bone and orthoses for limb injury. Compared with the stone gauze bandage, the performance of the fiberglass polymer bandage is greatly improved. It is light weight, high strength, transparent X-ray, water resistance, and breathability. The good breathability can prevent itching, odor and skin bacterial infection, thus avoiding skin atrophy. Therefore, improving the breathability of bandage products is a crucial issue.

The following are the authors from the practice to discuss and summarize the main factors affecting the breathability of bandage products: 1 Optimize and improve the polyurethane resin formula Add high-efficiency defoamer to the polyurethane resin to eliminate the bubbles generated during the curing reaction of the resin. Improve product ventilation.

2 to improve the fabric structure of the glass fiber knit tape using a three-dimensional three-dimensional mesh structure instead of the traditional flat weave, satin and other flat fabric structure, so that the latitude and longitude elasticity moderate, dimensional accuracy in line with the requirements, can improve the elasticity and transparency of the bandage product 3 Reasonable adjustment of the rubber content of the product containing glue is too large, affecting the product's breathability; glue content is too small, affect the product's impact strength and waterproof performance. The glue content of general glass fiber bandage products should be controlled within a suitable range.

4 to improve the compatibility of resin and glass fiber tape Glass fiber tape by heat treatment, etc., is conducive to the proliferation of resin in the glass fiber surface, soaked, ensure that the glue evenly coated on the webbing, making the product breathable, Consistent.

5 Keep the surface of the prime ingredient dry, clean, free of blemishes, and oil stains should be completely and thoroughly treated with heat until the ribbon is whitish. And quickly put people sealed in plastic bags to prevent water molecules in the air seepage. Conditional can be stored in a constant temperature and humidity environment.

All in all, excellent breathability is one of the important properties of polymer bandage products that are superior to those of stone bandages. The permeability of glass fiber bandages is mainly related to factors such as resin formulation, webbing structure, adhesive content, and tape post-processing. According to the influence of the breathability of general wear fabrics on the respiration and metabolism of human skin, considering the impact strength and waterproof performance, it is better to set the air permeability index to 0.715 (111/5).