Processing method of alginic acid fiber for non-woven medical dressing fabric

Abstract

The invention discloses a processing method of alginic acid fiber for non-woven medical dressing fabric, belonging to the field of biofiber processing. The processing method comprises the steps of: weighing and mixing the following ingredients in parts by weight: 30-50 parts of tween-80 solution and 70-50 parts of water to obtain an emulsifying agent; cutting off alginic acid fiber wool tops to obtain short-cut alginic acid fiber wool tops; spraying the emulsifying agent on the short-cut alginic acid fiber wool tops, controlling the weight ratio of the emulsifying agent and the short-cut alginic acid fiber wool tops, and filling in a close container for standing after the spraying is finished, thereby obtaining emulsified alginic acid fiber; taking out the emulsified alginic acid fiber from the close container to be spread in an exposed state, and controlling the spreading time to obtain the alginic acid fiber for non-woven medical dressing fabric. The alginic acid fiber for non-woven medical dressing fabric has desirable strength and excellent toughness, can meet the carded web requirement of a carding machine in a non-woven process, can show good entanglement effect among fibers in the following needling process of a needling machine without the scattering phenomenon.

Description

technical field [0001] The invention belongs to the technical field of biological fiber treatment, and in particular relates to a treatment method for alginic acid fibers used in medical dressing non-woven fabrics. Background technique [0002] Alginic acid, also known as alginic acid, kelp gum, and alginate, is a natural polymer material extracted from brown algae. Alginic acid has many excellent properties and is widely used in food, medicine, textile, printing and dyeing, papermaking, daily chemical industry, wastewater treatment and other fields. [0003] With the increasing scarcity of non-renewable natural resources such as oil and coal, and the remarkable enhancement of human awareness of environmental protection, natural polymer materials such as polylactic acid that have sustainable development and circular economy characteristics and help to protect the environment Fiber, alginate fiber, soybean protein fiber, etc. are more and more valued by people. Among them: ...

AI Technical Summary

Problems solved by technology

[0005] However, no matter the ion exchange method taught by the above-mentioned patent documents or the blended spinning method, the alginic acid fiber generally has the defects of insufficient fiber strength and insufficient fiber toughness. Therefore, in the process of making non-woven fabrics for medical dressings by non-woven technology, that is, non-woven technology, it is difficult to be carded into a web by a carding machine, and even if it is barely carded into a web, the ideal fiber entanglement cannot be formed in the subsequent acupuncture process. This can be confirmed by the technical content disclosed in the aforementioned CN102704326A (a preparation method of alginic acid-based non-woven fabrics), because the patent application scheme has a great impact on the formation of alginic acid fibers. The net adopts copying to form the net, for details, please refer to column 0008 of the manual

However, the use of copy-made nets is not only cumbersome in process, but also difficult to meet the requirements of industrial scale-up production.

[0006] Perhaps due to the above factors, the medical dressings in the prior art are still mainly made of viscose fiber and polyester fiber through needle punching machines. When the obtained non-woven fabric is used as a medical dressing, on the one hand, it is not conducive to creating a good healing environment for the wound; on the other hand, it is difficult or even impossible to degrade and damage the environment after being discarded.