TW201408833A - Natural polymer yarn and fabrication method, netted fabrics and application thereof - Google Patents

Abstract

A method for fabricating natural polymer yarn comprises the following steps: (a) forming a natural polymeric long fiber by wet spinning or electro spinning from a natural polymer solution; (b) combining the natural polymeric long fiber and at least one polymeric fiber by a false twist texturing process to form a natural polymeric yarn. A natural polymer yarn relates to the method. A natural polymer fabric includes said natural polymer yarn. A method of using said natural polymer fabric for medical dressing. By means of a false twist texturing process, the natural polymer yarn with enhanced tensile strength and elongation could reduce the drawback of conventional wound dressing products which lack strength and stretchiness in a wet condition.

Description

Natural polymer yarn, manufacturing method thereof, mesh fabric and application

The invention relates to a method for manufacturing a natural polymer yarn, in particular to a method for manufacturing a natural polymer yarn by mixing a natural polymer long fiber with one or more natural polymer fibers or chemical polymer fibers; The invention relates to a natural polymer yarn; the invention relates to a method for manufacturing a natural polymer mesh fabric, in particular to a method for manufacturing a natural polymer mesh fabric by a natural polymer yarn; The invention relates to a natural polymer mesh fabric, in particular to a natural polymer mesh fabric which is composed of natural polymer yarn; the invention relates to the use of a natural polymer mesh fabric for medical dressings.

The wound dressings of the prior art are mostly cotton mats and gauze. Due to the poor antibacterial property of such dressing products, the wound infection probability is high, and the phenomenon of sticking wounds is easy to occur, and when the dressing is changed, the shortcomings are difficult to remove, and further Causes secondary damage to the wound. Therefore, the prior art uses natural polymers such as alginate dressings or polysaccharide dressings as non-woven dressings to replace cotton pad, gauze and other material dressings, although the non-woven type dressing has better liquid absorbing ability and can provide a moist environment. The characteristics of wound repair, but when the dressing is changed, the short fiber strength and elongation of the natural polymer non-woven fabric dressing after the liquid absorbing and moistening are insufficient, so that the natural polymer non-woven fabric dressing of the prior art is prone to peeling, and the dressing is not easy to move. In addition, there may be some fiber remaining in the wound during the dressing change, which not only has the risk of causing allergic reactions, but also increases the difficulty of the medical staff to clean the wound and the pain of the user.

In view of the disadvantages of short fiber strength and elongation of the prior art natural polymer non-woven fabric dressing, which is easy to peel off and cause fiber residue, the object of the present invention is to provide a method for manufacturing a natural polymer yarn, which is improved by regulating the twist. The strength and elongation of the yarn.

In order to achieve the above object, the present invention provides a method for producing a natural polymer yarn, comprising: (a) preparing a natural polymer solution to form a natural one by wet spinning or electro spinning. The polymer long fiber; (b) the natural polymer long fiber and at least one polymer fiber are mixed by a false twist process to form a natural polymer yarn.

Preferably, the natural polymer solution includes, but is not limited to, a chitosan solution, a hyaluronic acid solution, a collagen solution, and an alginate solution.

Preferably, the natural polymer solution is based on the total weight, and the concentration is between 3% and 8%; more preferably, the concentration of the natural polymer solution is between 4% and 6%.

According to the present invention, "wet spinning" is so as to soak the die of the extruder in the coagulating liquid, and when the natural polymer solution is extruded to the coagulating liquid, it is solidified to form a natural polymer fiber. "Electro-spinning" is the natural polymer fiber formed by the electro-polymer solution passing through the electrostatic field, ejecting the polymer filament and immersing it in the coagulating liquid.

According to the present invention, "natural polymer long fiber" refers to a natural polymer long fiber obtained by a step of infiltrating glycerin solution and drying in a textile process such as wet spinning or electrospinning of a natural polymer solution. Wherein the glycerin solution is based on the total weight (wt) and the concentration is between 0.1 wt% and 5 The wt%, and the solvent of the glycerin solution is a 20 wt% to 80 wt% aqueous solution of ethanol.

Preferably, the at least one polymer fiber comprises, but is not limited to, a natural polymer fiber and a chemical polymer fiber.

More preferably, the natural polymeric fibers include, but are not limited to, chitosan fibers, hyaluronic acid fibers, collagen fibers, and alginate fibers.

According to the present invention, "chemical polymer fiber" means a linear structure obtained by interlacing a polymer obtained by chemical polymerization. More preferably, the chemical polymer fibers include, but are not limited to, polyester fiber, nylon fiber, polyethylene fiber (PE fiber), and polypropylene fiber (PP fiber). ).

According to the present invention, "false sputum" is referred to herein as a fiber crepe which is retracted to have an irregular twist and a sturdy feel.

The present invention further provides a natural polymer yarn obtained by the above-described production method.

Preferably, the natural polymer yarn has a twist of between 100 捻 (t/m) and 200 t/m per metre and a strength of 1.15 gram per denier (g/den). Between 1.25 g/den and the elongation system is between 6.6% and 8.5%.

The invention further provides a method for manufacturing a natural polymer mesh fabric, comprising: preparing a natural polymer yarn as described above, and forming a natural polymer mesh fabric by knitting.

Preferably, the knitting method includes, but is not limited to, plain weave, twill weave, satin weave, and three-dimensional weaving.

The invention further provides a natural high produced by the manufacturing method as described above. The sub-network fabric, wherein the natural polymer mesh fabric is composed of the aforementioned natural polymer yarn and at least one polymer yarn.

Preferably, the at least one polymer yarn comprises, but is not limited to, a natural polymer yarn and a chemical polymer yarn.

More preferably, the natural polymeric yarns include, but are not limited to, chitosan yarns, hyaluronic acid yarns, collagen yarns, and alginate yarns.

More preferably, the chemical polymer yarn includes, but is not limited to, a polyester yarn, a nylon yarn, a polyethylene yarn (PE yarn), and a polypropylene yarn. (polypropylene yarn, PP yarn).

The invention further provides the use of a natural polymeric mesh fabric as described above for a medical dressing comprising applying the medical dressing to cover or fill a wound.

Preferably, the wound includes, but is not limited to, a wound wound, a acne wound, a burn wound, a diabetic foot wound, a venous ulcer, a chronic ulcer wound with extensive skin damage, and a wound to be filled with a material.

The method for manufacturing the natural polymer yarn of the present invention is a method of mixing false natural fibers with at least one polymer fiber to form a natural polymer yarn, and the natural polymer yarn is impregnated Between 100 t/m and 200 t/m, strength between 1.15 g/den and 1.25 g/den and elongation between 6.6% and 8.5% increase the strength and elongation of the yarn.

The natural polymer mesh fabric of the present invention is composed of the above-mentioned natural polymer yarn and polymer yarn, and the natural polymer mesh fabric not only provides high liquid absorption and provides a moist environment for tissue repair, and this invention The natural polymer mesh fabric is used for medical dressing applications (such as for feeding wounds), and the natural polymer mesh fabric can improve the strength and elongation of the medical dressing, thereby making the medical dressing easy to be removed by the wound. The invention has the advantages that it is not easy to leave debris; and the natural polymer mesh fabric of the invention is applied to medical dressings, and can be applied to wounds of various sizes or curved surfaces of the body surface, especially chronic chronic refractory, deeper layers and hypertonic fluid wounds.

Example 1. Preparation of alginate yarn

The sodium alginate powder is adjusted to 4 wt% to 5 wt% sodium alginate mucilage with sterile water, and the 250 mm and 0.08 mm (mm) spinning nozzle passes through the coagulation bath to make 5 wt% calcium chloride (CaCl ₂ ). In order to form a calcium alginate fiber, and then the calcium alginate fiber is washed with water, a 1 wt% to 3 wt% glycerin solution is applied to the surface of the fiber, and a wet spinning process such as drying is performed to prepare calcium alginate. Long fiber. The long calcium alginate fiber was subjected to long fiber twisting treatment with a twisting machine to prepare an alginate yarn, which was then used. The obtained alginate yarn was subjected to a tensile property test of a calcium alginate yarn measured by American Society for Testing and Materials D2256 (ASTM D2256) as shown in Table 1.

As shown in Table 1, as the twist increases, the strength and elongation of the sample also increase, but the absorbance of the sample decreases with increasing twist. general The medical dressing should have good liquid absorbency, strength and elongation. Therefore, in the present embodiment, when the alginate yarn has a burning degree of 98 t/m to 207 t/m, it has better liquid absorbency and strength. And extension.

Example 2. Preparation of chitosan yarn

The chitosan is dissolved in 2 volume percent (vol%) aqueous acetic acid solution, and the chitosan solution is adjusted to a concentration between 3 wt% and 8 wt%, and the chitosan solution is filtered to 5 A wt% aqueous sodium hydroxide solution was used as a coagulation bath, and chitosan fibers were produced by a wet spinning machine. In the wet spinning process, chitosan fibers are impregnated into a 0.1 wt% to 5 wt% glycerin solution and dried to produce chitosan long fibers. The chitosan long fiber was subjected to long fiber false twist processing by a twisting machine to prepare a chitosan yarn.

Example 3. Preparation of natural polymer mesh fabric

As shown in Fig. 1, the alginate yarn obtained in the above Example 1 or the chitosan yarn obtained in Example 2 was woven by a woven fabric proofing machine to form a natural polymer mesh fabric 1, respectively.

The invention is further illustrated by the above-described embodiments, which do not limit the disclosure of the invention. A person skilled in the art can make some modifications and modifications without departing from the scope of the invention.

1‧‧‧Natural polymer mesh fabric

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a natural polymer mesh fabric of the present invention.

1‧‧‧Natural polymer mesh fabric

Claims (15)

A method for producing a natural polymer yarn, comprising: (a) preparing a natural polymer solution, forming a natural high polymer long fiber by wet spinning or electro spinning; (b) The natural high polymer long fiber is mixed with at least one polymer fiber by a false twist process to form a natural polymer yarn. The method for producing a natural polymer yarn according to claim 1, wherein the natural polymer solution is a chitosan solution, a hyaluronic acid solution, a collagen solution or an alginate solution. The method for producing a natural polymer yarn according to claim 1, wherein the natural polymer solution is based on the total weight (wt%) and has a concentration of from 3 wt% to 8 wt%. The method for producing a natural polymer yarn according to claim 1, wherein the concentration of the natural polymer solution is from 4 wt% to 6 wt%. The method for producing a natural polymer yarn according to claim 1, wherein at least one of the polymer fibers is a natural polymer fiber or a chemical polymer fiber. The method for producing a natural polymer yarn according to claim 5, wherein the natural polymer fiber is chitosan fiber, hyaluronic acid fiber, collagen fiber or alginate fiber; wherein the chemical polymer fiber is a polyester fiber ( Polyester fiber), nylon fiber, polyethylene fiber (PE fiber) or polypropylene fiber (PP fiber). A natural polymer yarn obtained by the production method according to any one of claims 1 to 6. The natural polymer yarn according to claim 7, wherein the natural polymer yarn has a twist of between 100 t/m and 200 t/m and a strength of between 1.15 g/den and 1.25 g/den. The inter- and elongation ratios ranged from 6.6% to 8.5%. A method for producing a natural polymer mesh fabric comprising: preparing a natural polymer yarn as described in claim 7 or 8 to form a natural polymer mesh fabric in a braided manner. The method for producing a natural polymer mesh fabric according to claim 9, wherein the weaving method is plain weave, twill weave, satin weave or three-dimensional weave. A natural polymer mesh fabric obtained by the production method according to claim 9 or 10, wherein the natural polymer mesh fabric is composed of a natural polymer yarn and at least one polymer yarn. The natural polymer mesh fabric according to claim 11, wherein at least one of the polymer yarns is a natural polymer yarn or a chemical polymer yarn. The natural polymer mesh fabric according to claim 12, wherein the natural polymer yarn is a chitosan yarn, a hyaluronic acid yarn, a collagen yarn or an alginate yarn; wherein the chemical polymer yarn is Polyester yarn, nylon yarn, polyethylene yarn (PE yarn) or polypropylene yarn (PP yarn). A use of a natural polymeric mesh fabric according to any one of claims 11 to 13 for a medical dressing comprising applying the medical dressing to cover or fill a wound. The use of claim 14, wherein the wound is a wound wound, a acne wound, a burn wound, a diabetic foot wound, a venous ulcer, and a large area. Chronic ulcers with damaged skin and wounds that need to be filled with material.