Fuzzing fibers, methods of making and use thereof
By preparing self-pilling fibers, the safety hazard of lint falling into blood vessels and forming thrombi from nursing materials is solved, achieving hemostasis and leakage prevention effects, while reducing production energy consumption and meeting the needs of environmental protection development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINESE TEXTILE ACAD
- Filing Date
- 2024-12-27
- Publication Date
- 2026-06-30
Smart Images
Figure CN122304041A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of fiber textile technology, and in particular to a self-pilling fiber, its preparation method, and its uses. Background Technology
[0002] In the process of stopping bleeding or preventing leakage in wounds of fragile human organs, the performance of the nursing materials themselves is not ideal. Sometimes, the lint that falls off the nursing materials may accidentally enter the blood vessels, causing a risk of blood clots. Summary of the Invention
[0003] In view of this, the present invention provides a self-pilling fiber, its preparation method and its uses, which has its own hairs, and the hairs have strong adhesion to the fiber body. When the self-pilling fiber prepared by this method is used for hemostasis and / or leakage prevention of wounds in human fragile organs, it can reduce the hairs from falling off the fiber body and entering the blood vessels, thereby reducing the risk of thrombosis due to hair loss, and thus making it more suitable for practical use.
[0004] To achieve the first objective mentioned above, the technical solution for self-pilling fibers provided by the present invention is as follows:
[0005] The self-pilling fiber provided by the present invention includes a fiber body, wherein the fiber body has hairs formed by the fiber body itself, the length of which ranges from 5μm to 2mm, and the hairs make the surface of the self-pilling fiber appear fluffy.
[0006] The self-pilling fiber provided by this invention can be further realized by the following technical measures.
[0007] Preferably, the material composition of the fiber body includes one or more of polyglycolic acid, polydioxanone, and polycaprolactone.
[0008] As a preferred option
[0009] The mesh size of the fiber body fabric ranges from 0.3mm to 3mm; and / or,
[0010] The fiber fineness of the fiber body ranges from 8μm to 2mm; and / or,
[0011] The thickness of the fiber body ranges from 0.01mm to 3mm;
[0012] The warp strength of the fabric formed by the fiber body ranges from 1N to 60N; and / or,
[0013] The weft strength of the fabric formed by the fiber body ranges from 1N to 60N; and / or,
[0014] The breaking elongation of the fiber body ranges from 0.1% to 50%.
[0015] To achieve the second objective mentioned above, the technical solution for the preparation method of self-pilling fibers provided by the present invention is as follows:
[0016] The method for preparing self-pilling fibers provided by the present invention includes the following steps:
[0017] Obtain the material composition of the fiber body;
[0018] The fiber body material composition is extruded and melted by a composite screw extruder and further extruded through a spinneret to obtain nascent fibers;
[0019] The nascent fibers are cooled to obtain a first intermediate product;
[0020] The first intermediate product is stretched and shaped to obtain the second intermediate product;
[0021] The second intermediate product is woven to obtain the self-pilling fiber.
[0022] The method for preparing self-pilling fibers provided by this invention can be further implemented using the following technical measures.
[0023] Preferably, in the step of extruding and melting the fiber bulk material through a composite screw extruder to obtain an intermediate product, the length-to-diameter ratio of the extrusion screw of the composite screw extruder is in the range of (20-30):1.
[0024] Preferably, in the step of extruding the intermediate product through a spinneret to obtain nascent fibers, the spinneret shape is selected from one of the following: core-sheath type, split type, and clover type.
[0025] Preferably, in the step of cooling the nascent fiber to obtain the first intermediate product, the temperature of the cooling air is in the range of 20℃-30℃, the humidity of the cooling air is in the range of 20%-60%, and the blowing speed of the cooling air is in the range of 0.4m / s-1m / s.
[0026] Preferably, in the step of obtaining the second intermediate product from the first intermediate product through stretching and setting, the stretching ratio ranges from 4 to 7 times, and the setting time ranges from 3 seconds to 2 minutes.
[0027] Preferably, in the step of weaving the second intermediate product to obtain the self-pilling fiber, the weaving method is selected from one or a combination of plain weave weaving, weft knitting, warp knitting, or filament needle-punched nonwoven fabric processing.
[0028] To achieve the third objective mentioned above, the technical solution for the use of self-pilling fibers provided by the present invention is as follows:
[0029] The self-pilling fibers provided by this invention are used for hemostasis and / or leakage prevention of wounds in fragile human organs.
[0030] The self-pilling fibers prepared by the method provided in this invention are used to cover wounds in fragile organ tissues. Because the absorbable self-pilling composite fibers themselves have a fuzzy texture, their bulkiness is far greater than that of absorbable tissue repair materials prepared through brushing or napping processes. After absorbing a small amount of blood or body fluid, the material exhibits a barrier effect against liquids and gases, while simultaneously achieving pressure hemostasis at the wound site. Compared to existing technologies, this method reduces the napping process, lowers production energy consumption, and aligns with the current trend of "dual-carbon" development. Attached Figure Description
[0031] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0032] Appendix Figure 1 This is a schematic diagram illustrating the material changes during the preparation of self-pilling fibers, as provided in the embodiments of the present invention. Detailed Implementation
[0033] In view of this, the present invention provides a self-pilling fiber, its preparation method and its uses, which has its own hairs, and the hairs have strong adhesion to the fiber body. When the self-pilling fiber prepared by this method is used for hemostasis and / or leakage prevention of wounds in human fragile organs, it can reduce the hairs from falling off the fiber body and entering the blood vessels, thereby reducing the risk of thrombosis due to hair loss, and thus making it more suitable for practical use.
[0034] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, provides a detailed description of a self-pilling fiber, its preparation method, its uses, its specific implementation methods, structure, features, and effects according to the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.
[0035] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can mean that A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.
[0036] Self-pilling fibers
[0037] The self-pilling fiber provided in this embodiment of the invention includes a fiber body with hairs formed by the fiber body itself. The length of the hairs ranges from 5μm to 2mm, and the hairs make the surface of the self-pilling fiber appear fluffy.
[0038] The self-pilling fiber provided in this invention, when used to cover wounds in fragile organ tissues, exhibits a higher loft and bulkiness than absorbable tissue repair materials prepared through brushing or napping processes due to its inherent hair-like structure. After absorbing a small amount of blood or bodily fluids, the material provides a barrier effect against liquids and gases, while simultaneously applying pressure to the wound to stop bleeding. Compared to existing technologies, this method reduces the need for the napping process, lowers production energy consumption, and aligns with the current trend towards carbon-based production.
[0039] The material composition of the fiber body includes one or more of the following: polyglycolic acid, polylactic acid, polydioxanone, and polycaprolactone.
[0040] The fabric mesh size of the fiber body ranges from 0.3mm to 3mm; and / or, the fiber fineness ranges from 8μm to 2mm; and / or, the fiber thickness ranges from 0.01mm to 3mm; the warp strength of the fabric formed from this fiber body ranges from 1N to 60N; and / or, the weft strength of the fabric formed from this fiber body ranges from 1N to 60N; and / or, the elongation at break of the fiber body ranges from 0.1% to 50%. The mesh size ranges from 0.3mm to 3mm. If the mesh size is less than 0.3mm, a spatial network structure favorable to tissue growth cannot be formed, which is detrimental to tissue cell growth; if the mesh size is greater than 3mm, the spatial structure is too large and cannot induce tissue cell growth.
[0041] Preparation method of self-pilling fibers
[0042] See appendix Figure 1 The method for preparing self-pilling fibers provided in this embodiment of the invention includes the following steps:
[0043] Step S1: Obtain the material composition of the fiber body;
[0044] Step S2: The fiber bulk material is extruded and melted through a composite screw extruder and further extruded through a spinneret to obtain nascent fibers;
[0045] Step S3: The nascent fibers are cooled to obtain the first intermediate product;
[0046] Step S4: The first intermediate product is stretched and shaped to obtain the second intermediate product;
[0047] Step S5: The second intermediate product is woven to obtain self-pilling fibers.
[0048] The self-pilling fibers prepared by the method provided in this invention are used to cover wounds in fragile organ tissues. Because the absorbable self-pilling composite fibers themselves have a fuzzy texture, their bulkiness is far greater than that of absorbable tissue repair materials prepared through brushing or napping processes. After absorbing a small amount of blood or body fluid, the material exhibits a barrier effect against liquids and gases, while simultaneously achieving pressure hemostasis at the wound site. Compared to existing technologies, this method reduces the napping process, lowers production energy consumption, and aligns with the current trend of "dual-carbon" development.
[0049] In the step of extruding and melting the fiber bulk material through a composite screw extruder to obtain an intermediate product, the length-to-diameter ratio of the extrusion screw of the composite screw extruder ranges from (20-30):1.
[0050] In the step of extruding the intermediate product through a spinneret to obtain nascent fibers, the spinneret shape is selected from one of the following: core-sheath type, split type, and clover type.
[0051] In the step of cooling the nascent fibers to obtain the first intermediate product, the temperature of the cooling air ranges from 20℃ to 30℃, the humidity ranges from 20% to 60%, and the blowing speed ranges from 0.4 m / s to 1 m / s. Using the above-mentioned temperature, humidity, and wind speed for cooling air can yield absorbable fibers with uniform fineness and properties.
[0052] In the step of obtaining the second intermediate product from the first intermediate product through stretching and setting, the stretching ratio ranges from 4 to 7 times, and the setting time ranges from 3 seconds to 2 minutes. In this case, one component of the absorbable composite fiber is made to appear feathery under mechanical force, and the setting is a tension heat setting followed by winding, so that the tensile strength and elongation of the absorbable composite fiber meet the requirements of subsequent production.
[0053] In the step of obtaining self-pilling fibers by weaving the second intermediate product, the weaving method is selected from one or a combination of plain weave weaving, weft knitting, warp knitting, or filament needle-punched nonwoven fabric processing.
[0054] Uses of self-pilling fibers
[0055] The self-pilling fibers provided in this invention are used for hemostasis and / or leakage prevention of wounds in fragile human organs.
[0056] When in use, the feathery fibers make it easier to adhere to the surface of fragile tissue wounds, and the high loft allows the material to absorb blood and liquid more quickly, achieving the effect of compression to stop bleeding and leakage after absorption, thus achieving good hemostasis and preventing gas or liquid leakage.
[0057] Example 1
[0058] In this embodiment, the self-pilling absorbable tissue repair material is a composite fiber fabric of polyglycolic acid (PGA) and polylactic acid (PLA).
[0059] The two absorbable polymer materials described above are fed into an extrusion die via a single-screw extruder with a screw length-to-diameter ratio of 25:1, and a core-sheath type composite spinneret is selected. The extruded fine stream is cooled by cooling air at a temperature of 25°C, a humidity of 50%, and a blowing speed of approximately 0.6 m / s. An oiling agent is applied, and the fibers are wound at a low speed of 1000 m / min. The fibers are then stretched using 70°C hot rollers at a draw ratio of 5, followed by tension heat setting using 130°C hot rollers. The resulting fibers are then wound to obtain a feather-like absorbable composite fiber. The feather-like absorbable composite fiber has a fineness of 18 μm and a circular cross-sectional shape. This fiber is then warped and knitted to create a warp-knitted self-pilling absorbable tissue repair material with a mesh size of 0.8 mm. The self-pilling absorbable tissue repair material has a thickness of 0.2 mm, a warp and weft tensile strength of 6 N, and a warp and weft elongation at break of 10%.
[0060] Example 2
[0061] In this embodiment, the self-pilling absorbable tissue repair material is a composite fiber fabric of polyglycolic acid (PGA) and polylactic acid (PLA).
[0062] The two absorbable polymer materials described above are fed into an extrusion die via a single-screw extruder with a screw length-to-diameter ratio of 25:1, and a melt pipeline. A split-type composite spinneret is selected. The extruded fine stream is cooled by cooling air at a temperature of 25°C, a humidity of 50%, and a blowing speed of approximately 0.6 m / s. An oiling agent is applied, and the fibers are wound at a low speed of 1000 m / min. The fibers are then stretched using 70°C hot rollers at a draw ratio of 4, followed by tension heat setting using 130°C hot rollers. The resulting fibers are then wound to obtain a feather-like absorbable composite fiber. The feather-like absorbable composite fiber has a fineness of 18 μm and a circular cross-sectional shape. After warping, the feather-like absorbable composite fiber is weft-knitted to create a warp-knitted self-pilling absorbable tissue repair material with a mesh size of 1.0 mm. The self-pilling absorbable tissue repair material has a thickness of 0.5 mm, a warp and weft tensile strength of 10 N, and a warp and weft elongation at break of 5%.
[0063] Example 3
[0064] In this embodiment, the self-pilling absorbable tissue repair material is a composite fiber fabric of polyglycolic acid (PGA) and polycaprolactone (PCL).
[0065] The two absorbable polymer materials described above are fed into an extrusion die via a single-screw extruder with a screw length-to-diameter ratio of 25:1, and a melt pipeline. A split-type composite spinneret is selected. The extruded fine stream is cooled by cooling air at a temperature of 22°C, a humidity of 45%, and a blowing speed of approximately 0.6 m / s. An oiling agent is applied, and the fibers are wound at a low speed of 1500 m / min. The fibers are then stretched using 90°C hot rollers at a draw ratio of 3, followed by tension heat setting using 130°C hot rollers. The resulting fibers are then wound to obtain a feather-like absorbable composite fiber. The absorbable composite fiber has a fineness of 15 μm and a circular cross-sectional shape. This feather-like absorbable composite fiber is then warped and knitted into a warp-knitted self-pilling absorbable tissue repair material with a mesh size of 1 mm. The self-pilling absorbable tissue repair material has a thickness of 1 mm, a warp and weft tensile strength of 13 N, and a warp and weft elongation at break of 5%.
[0066] Example 4
[0067] In this embodiment, the self-pilling absorbable tissue repair material is a composite fiber fabric of polyglycolic acid (PGA) and polycaprolactone (PCL).
[0068] The two absorbable polymer materials described above are fed into an extrusion die via a single-screw extruder with a screw length-to-diameter ratio of 25:1, and then transported through a melt pipeline to an island-type composite spinneret. The extruded fine stream is cooled by cooling air at 25°C, with a humidity of 50% and a blowing speed of approximately 0.6 m / s. An oiling agent is applied, and the fibers are wound at a low speed of 1000 m / min. The fibers are then stretched using 70°C hot rollers at a draw ratio of 5, followed by tension heat setting using 130°C hot rollers. This results in a feather-like absorbable composite fiber. The feather-like absorbable composite fiber has a fineness of 18 μm and a triangular cross-sectional shape. After warping, the feather-like absorbable composite fiber is warp-knitted to create a self-pilling absorbable tissue repair material with a mesh size of 0.8 mm. The self-pilling absorbable tissue repair material has a thickness of 3 mm, a warp and weft tensile strength of 20 N, and a warp and weft elongation at break of 7%.
[0069] Examples 5-8
[0070] The process flow for Examples 5-8 is the same as that for Example 1, and other process parameters are shown in Table 1 below:
[0071] Table 1 Performance parameters of Examples 5-8
[0072]
[0073] Therefore, it can be seen that the self-pilling fiber prepared by the method provided in this invention has a thickness ranging from 0.02mm to 3mm, a warp and weft tensile strength ranging from 5N to 23N, and a warp and weft elongation at break ranging from 5% to 15%. When used to cover wounds in fragile organ tissues, the absorbable self-pilling composite fiber, due to its inherent hair-like structure, has a much higher bulkiness than absorbable tissue repair materials prepared through brushing or napping processes. After absorbing a small amount of blood or body fluid, the material exhibits a barrier effect against liquids and gases, while simultaneously achieving pressure hemostasis at the wound site. Compared to existing technologies, this method reduces the napping process, lowers production energy consumption, and aligns with the current trend of "dual-carbon" development.
[0074] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.
[0075] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A self-linting fiber, characterized by, It includes a fiber body, on which there are hairs formed by the fiber body itself, the length of which ranges from 5μm to 2mm, and the hairs make the surface of the self-pilling fiber appear fluffy.
2. The self-lintering fiber according to claim 1, wherein, The material composition of the fiber body includes one or more of polyglycolic acid, polydioxanone, and polycaprolactone.
3. The self-pilling fiber according to claim 1, characterized in that, The mesh size of the fiber body fabric ranges from 0.3mm to 3mm; and / or, The fiber fineness of the fiber body ranges from 8μm to 2mm; and / or, The thickness of the fiber body ranges from 0.01mm to 3mm; The warp strength of the fabric formed by the fiber body ranges from 1N to 60N; and / or, The weft strength of the fabric formed by the fiber body ranges from 1N to 60N; and / or, The breaking elongation of the fiber body ranges from 0.1% to 50%.
4. The method of producing self-lathering fibers according to any one of claims 1 to 3, characterized in that, Includes the following steps: Obtain the material composition of the fiber body; The fiber body material composition is extruded and melted by a composite screw extruder and further extruded through a spinneret to obtain nascent fibers; The nascent fibers are cooled to obtain a first intermediate product; The first intermediate product is stretched and shaped to obtain the second intermediate product; The second intermediate product is woven to obtain the self-pilling fiber.
5. The method for preparing self-pilling fibers according to claim 4, characterized in that, In the step of obtaining an intermediate product by extruding and melting the fiber bulk material through a composite screw extruder, the length-to-diameter ratio of the extrusion screw of the composite screw extruder is in the range of (20-30):
1.
6. The method for preparing self-pilling fibers according to claim 4, characterized in that, In the step of extruding the intermediate product through a spinneret to obtain nascent fibers, the spinneret shape is selected from one of the following: core-sheath type, split type, and clover type.
7. The method for preparing self-pilling fibers according to claim 4, characterized in that, In the step of cooling the nascent fibers to obtain the first intermediate product, the temperature of the cooling air is in the range of 20℃-30℃, the humidity of the cooling air is in the range of 20%-60%, and the blowing speed of the cooling air is in the range of 0.4m / s-1m / s.
8. The method for preparing self-pilling fibers according to claim 4, characterized in that, In the step of obtaining the second intermediate product from the first intermediate product through stretching and setting, the stretching ratio ranges from 4 to 7 times, and the setting time ranges from 3 seconds to 2 minutes.
9. The method for preparing self-pilling fibers according to claim 4, characterized in that, In the step of weaving the second intermediate product to obtain the self-pilling fiber, the weaving method is selected from one or a combination of plain weave weaving, weft knitting, warp knitting, or filament needle-punched nonwoven fabric processing.
10. Use of the self-pilling fibers according to any one of claims 1-3 for hemostasis and / or leakage prevention of wounds in human fragile organs.