Medical packaging materials shall meet the requirements of GB/T19633; Sterilization has been achieved by allowing full penetration and removal of the sterilizer; Can provide an effective bacterial barrier; It has wide compatibility with sterilization method; In use can be convenient for the operator to open; Contains non-toxic ingredients, do not fade, moderate price.
Medical packaging materials are divided into reusable packaging materials and disposable packaging materials. Reusable medical suit material include: cotton, hard containers; Disposable packaging materials include medical non-woven fabrics, medical wrapping paper, medical paper bags, and paper-plastic packaging materials. In contrast, single-use packaging materials are more popular because they are more hygienic and convenient.
The nonwoven packaging material is made of plastic polymer, cellulose fiber, the main material is polypropylene. The fiber gap of non-woven fabric is small and randomly arranged, which significantly reduces the possibility of microorganism or dust particle transfer. Non-woven fabric is disposable and can not be reused. When choosing non-woven fabric, the thicker the better. Under the premise of antibacterial performance and tensile strength, the wet packaging phenomenon of good permeability packaging materials will be reduced. Because there are many types of non-woven fabric at present, the appropriate non-woven fabric should be selected according to the number and weight of surgical instruments when packaging instruments (pulsating vacuum pressure steam sterilization less than 30*30*50 cubic centimeters, weight: auxiliary material package less than 5KG, instrument package less than 7KG). In addition, pin and rope cannot be used when packaging. Packaging should not be too tight or too loose, too tight is not conducive to the penetration of sterilization media, so as to achieve sterilization or preservation effect.
Paper and plastic packaging materials should be composed of a layer of paper and a layer of plastic composite film, along the two sides of the parallel thermal bonding together, the total width of the thermal bonding line should be more than or equal to 6mm, for each batch of products, the method of visual inspection should be used for relevant detection, quality supervision. The plastic film shall be composed of two or more layers and shall not use toxic materials; Plastic film should not perforate, crack, crack, fold and local thickness inequality affect the function of the material defects; Materials shall have acceptable levels of cleanliness, tensile strength, thickness variation, tear resistance, gas penetration, and tensile rupture to meet the requirements of medical device packaging and sterilization processes. When using a plastic bag, check whether the temperature of the sealing machine is appropriate (180 to 200° is recommended by the manufacturer). After sealing, check the sealing part to ensure that the seal is even and complete (without wrinkles) and is tightly sealed. The sealing width of the sealing interface is more than 6mm; The sealing point should be ≥2cm from the edge of the bag, and the instrument in the bag should be ≥2.5cm from the sealing point of the bag. Paper plastic bags should not be used for heavy or bulky items. Place the item in the bag so that one end of the ring of the instrument faces the opening of the package. The spare paper plastic aseptic bags stored in clinical departments are prone to fold and seal cracking, and the dryness of hard packaging is poor. There is water retention on the inner plastic surface individually, and sharp instruments are easy to Pierce the packaging of paper plastic bags. The 2009 specification states that it is only used for the packaging of a single device. Flat tape is generally recommended for items less than 5CM thick. At present, it is widely used in hospitals, but because of the existence of single-side breathable, some metal instruments are easy to produce condensate water in the sterilization process, and the paper plastic packaging bag can not be used for the lower exhaust sterilizer.
Flashspun fabric is a special case of dry spinning. Polymers quickly form fibers when solvent flash, also known as instant spinning. In fact, this spinning method was discovered in the foaming process of polyolefin and was later applied to the development of thermoplastic polymer staple fibers, filament fibers and especially non-woven fabrics. The developed products include highly fibrillated mesh staple fiber, filament -, non-woven fabric, etc., widely used in industry with innovative packaging materials, agriculture, health care, packaging and other fields.
As a new light weight waterproof material, Flash spun fibers have small monofilament size, large specific surface area and high tensile strength, especially the crystallinity and crystallization orientation have fully reached the index of tensile fibers. Because of its excellent physical and mechanical properties and special fibrous network structure, it has a wide range of application value. On the one hand, the proportion is small, high strength, smooth, waterproof and breathable, can be used as medical sterilization bag, fresh-keeping bag, antioxidant bag, desiccant bag, dust-free paper, envelope, construction waterproof cloth, dust-proof clothing, medical surgical clothes, etc. On the other hand, staple fiber has been widely used as cement-reinforcing material in recent years. The fiber has a highly fibrillated three-dimensional network structure and high tensile strength, which is conducive to the adhesion with the matrix material and plays a good anti-crack strengthening role, so it has been widely used in cement concrete in recent years. Compared with medical non-woven fabrics and paper and plastic packaging materials, flash spun fibers are more practical, tougher and more cost-effective.