Application of Polyester Fibers in Technical Textiles: Medical and Hygienic Applications

Release time:

2022-09-06

The title of technical textiles first appeared in Europe in the 1980 s. It refers to textile materials and products designed and manufactured for the purpose of technical characteristics and functionality. my country is generally called industrial textiles, and it is divided into medical treatment and 16 statistical sub-items such as sanitation, filtration and separation, and geotechnical. Polyester fibers have played an extremely important role in the field of technical textiles due to their excellent comprehensive properties.

Medical and health textiles can be divided into two categories: wearable and non-wearable. Typical products of the former include masks, disposable pads (including baby diapers, women's sanitary napkins, adult incontinence pants), patient clothing, doctor's clothing, nurse's clothing, protective clothing, etc.; the latter includes wipes, bandages (including plastic mesh holders), gauze, sutures, flexible stents, artificial body organs, etc. According to statistics, the application proportion of polyester fiber in this field is as high as 75%, involving textiles of various structures.

The medical elastic bandage can be interwoven with polyester and cotton thread, and then finished with damp heat to obtain the fabric with excellent elasticity and hygroscopicity. After clinical application in bone surgery and thoracic surgery, the effect is equivalent to that of imported similar products, and the cost is lower. In addition, the polyester zipper as a temporary closure material for abdominal incision, after clinical application, also has a good effect.

The stain-resistant elastic backing cloth made of warp-oriented middle-count cotton double strands and weft-oriented PBT fine-count yarn has a moisture absorption performance of not less than 7% and an air permeability of up to 300 L/(m²S), used as a "band-aid" backing adhesive lining, not only feels soft, elastic elongation can reach 45% ~ 50%, but also can be used for drug bandaging of falls, injuries and sprains, and is also suitable for knee pads, wrist pads, etc.

Using matt masterbatch with intrinsic viscosity of 0.64 dL/g and mass fraction of semi-matt PET and TiO2 of 50% as raw materials, anti-perspective PET fiber was prepared by skin-core composite spinning method, which can meet the requirements of light and thin medical clothing and shielding. In the early product development, a variety of processing methods have been explored, including the use of full matting direct spinning filaments and staple fibers.

NatureWorks has developed PLA nonwovens that can be used in baby diapers, adult incontinence and feminine hygiene products to help produce thinner, more comfortable hygiene products and reduce the incidence of skin rashes. After surface treatment, the amount of super absorbent polymer (SAP) or pulp can be reduced by 30%, which is thinner, more comfortable and lower cost than traditional polypropylene products.

The multi-filament based on PET fiber is processed into warp knitted fabric for heart mesh support, also known as heart support device (Cardiac support device,CSD). Its shape is similar to the heart, with high strength, flexibility, tear resistance and biocompatibility, easy to slide on the surface of the heart, can adjust the most suitable support, to help the heart failure of the spherical heart remodeling into a healthy oval.

The extracorporeal circulation system (ECC system or OPB system) is an important instrument for sustaining life, and the MEDIFAB made of PET monofilament by Sefar, Switzerland.^®The filter has precise mesh size, high pass rate, excellent particle retention rate, good biocompatibility, etc., and has high safety in clinical use. In hemodialysis, with the tunnel with polyester sheath catheter is conducive to achieve the desired effect of hemodialysis, but also can effectively control the occurrence of complications, improve the quality of prognosis, to promote the rehabilitation of patients, improve the quality of life is of great significance.

The use of polyester monofilament to make implantable artificial hair has been used in more than 110000 cases worldwide. γ-aminopropyltriethoxysilane/polypyrrole film/polyester (silane coupling agent KH-550/PPy/PET) monofilament composite was used as implantable artificial hair with good biocompatibility and no obvious cytotoxicity.

Production capacity and demand outlook of spun-melt polypropylene nonwovens

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