A process for preparing a heat-insulating and antibacterial composite yarn

Abstract

This invention discloses a preparation process for a thermal insulation and antibacterial composite yarn, comprising the following steps: fiber selection: selecting a hollow main body, bonding yarn, and covering yarn; bonding process: using an adhesive to uniformly bond the bonding yarn to the outer surface of the hollow main body; covering process: using a friction spinning machine to wrap the covering yarn around the outer surface of the bonded finished product. The preparation process of this thermal insulation and antibacterial composite yarn, with a hollow main body as the center, bonds bonding yarn to its surface to form an adhesive layer, and covering the outside of the adhesive layer with a yarn layer, results in a composite yarn with a vacuum structure, excellent thermal insulation effect, and improved mechanical properties, UV protection, antibacterial properties, adsorption properties, and antistatic properties. This makes the prepared composite yarn more functional, with better performance, and has promising prospects.

Description

Technical Field

[0001] This invention relates to the field of composite yarn processing technology, and in particular to a process for preparing a heat-insulating and antibacterial composite yarn. Background Technology

[0002] As the level of social economy continues to improve, people tend to choose higher quality and more comfortable fabrics when selecting clothing materials.

[0003] In order to produce better fabrics, people have developed composite yarns with different functions based on the characteristics of the fabrics.

[0004] Yarn is a type of textile product made from various textile fibers processed into a certain fineness. It is used for weaving, rope making, thread making, knitting, and embroidery, and is divided into short fiber yarn and continuous filament yarn.

[0005] Composite yarn is produced by integrating yarns with different functions.

[0006] The patented flame-retardant, elastic, and antibacterial composite yarn and its production process, with patent number CN114703576B, involves first soaking the core yarn and outer winding yarn in a first soaking solution, then soaking the cotton core yarn and outer winding yarn in a second soaking solution, and finally wrapping the outer winding yarn around the core yarn with a twisting machine. This results in a composite yarn that not only has excellent flame-retardant properties but also good antibacterial and elastic properties, and has broad application prospects.

[0007] The flame-retardant, elastic, and antibacterial composite yarn prepared above is relatively stiff and not soft enough during use. Moreover, the fabric prepared from the stiff yarn is not fluffy enough and has poor heat insulation effect, which does not meet people's usage requirements. Therefore, a preparation process for heat-insulating and antibacterial composite yarn is proposed. Summary of the Invention

[0008] The main objective of this invention is to provide a process for preparing thermal insulation and antibacterial composite yarn, which can effectively solve the problems in the background art.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A process for preparing a heat-insulating and antibacterial composite yarn includes the following steps:

[0011] Fiber selection: Hollow core, adhesive yarn and covered yarn are selected;

[0012] Adhesive bonding process: Adhesive is used to evenly bond the bonding yarns to the outer surface of the hollow body;

[0013] Coating process: The coating yarn is wrapped around the outer surface of the bonded finished product using a friction spinning machine;

[0014] Yarn treatment: The yarn obtained from the covering process is placed in a sizing machine for sizing treatment to obtain heat-insulating and antibacterial composite yarn.

[0015] This invention describes a process for preparing a thermal insulation and antibacterial composite yarn. The yarn is prepared by creating multiple layers, with a hollow main body as the center, on which adhesive yarns are bonded together to form an adhesive layer, and a yarn layer is wrapped around the outside of the adhesive layer. The resulting composite yarn has a vacuum structure and good thermal insulation effect.

[0016] Preferably, in the fiber selection step, the hollow body is selected as a hollow silicone tube, the bonding yarn is selected as hemp fiber, and the covering yarn is selected as cotton fiber.

[0017] The hollow silicone tube creates a hollow structure, and hemp fiber is used as the bonding yarn. The hemp fiber has a porous and hollow structure. The two work together to further improve the heat preservation effect.

[0018] Preferably, the hemp fibers are softened before the bonding yarn is formed, and then the softened hemp fibers are twisted.

[0019] After softening treatment, hemp fibers are not easily broken when twisted, resulting in good performance and promising application prospects.

[0020] Preferably, the softening process involves subjecting hemp fibers to low-energy electron irradiation under an inert gas protective atmosphere, with a radiation voltage of 300-400 keV, irradiating 3-4 times, each time for 5-8 minutes.

[0021] This invention describes a process for preparing a heat-insulating and antibacterial composite yarn. The process involves softening hemp fibers, then twisting and bonding the softened hemp fibers to a hollow silicone tube. This process gives the fibers better mechanical properties, UV protection, antibacterial properties, adsorption properties, and antistatic properties, resulting in a more complete composite yarn with better performance and wider applicability.

[0022] Preferably, the bonding process uses a water-based adhesive, which is used to bond several groups of softened hemp fibers to the outer surface of the hollow silicone tube. The several groups of softened hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube.

[0023] Hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube, which makes the entire hollow silicone tube perform well.

[0024] Preferably, after the bonding process, a flame retardant and a bactericide are coated on the outer surface of the hollow silicone tube with hemp fibers bonded together, and the product coated with the flame retardant and bactericide is subjected to heat setting treatment.

[0025] The effects of flame retardants and bactericides can further enhance the flame retardant and bactericidal effects, resulting in better performance of the composite yarn.

[0026] Preferably, during the coating process, the friction spinning machine uses two friction drums rotating in the same direction to wrap the cotton fibers around the surface of the core yarn.

[0027] Preferably, during the coating process, the rotation speed of the opening roller is 2500-2800 r / min, the rotation speed of the friction roller is 2200-2400 r / min, the feeding speed is 0.8-0.9 m / min, the output speed is 5.50-6.50 m / min, and the winding speed is 7.50 m / min.

[0028] After the coating process, the yarn is generally softer, and the woven fabric is also relatively soft, resulting in good performance.

[0029] Preferably, the adhesive used in the sizing process includes cationic starch and polyvinyl alcohol. When preparing the sizing, the polyvinyl alcohol after boiling is added to the cationic starch slurry at a temperature above 90-100°C to form a mixed adhesive.

[0030] Preferably, during yarn processing, the adhesive is mixed and sized at 90-100℃ for half an hour. The yarn obtained from the covering process is sized using a single-yarn sizing machine with a single-immersion and single-press method. After sizing, it is dried to obtain a heat-insulating and antibacterial composite yarn.

[0031] Sizing creates a sizing film on the surface of the composite fibers, which improves the abrasion resistance of the yarn and effectively increases its strength.

[0032] Compared with the prior art, the preparation process of the heat-insulating and antibacterial composite yarn of the present invention has the following beneficial effects:

[0033] Firstly, this invention describes a preparation process for a heat-insulating and antibacterial composite yarn. This yarn is prepared by creating multiple yarns, with a hollow main body as the center, on which adhesive yarns are bonded together to form an adhesive layer, and a yarn layer is wrapped around the outside of the adhesive layer. The resulting composite yarn has a vacuum structure and good heat-insulating effect.

[0034] Secondly, this invention describes a preparation process for a heat-insulating and antibacterial composite yarn, which includes hemp fiber. The hemp fiber is softened and then twisted and bonded to a hollow silicone tube. This process gives the fiber better mechanical properties, UV protection, antibacterial properties, adsorption properties, and antistatic properties, resulting in a more complete composite yarn with better performance and wider applicability. Attached Figure Description

[0035] Figure 1 This is a flowchart illustrating the preparation process of a heat-insulating and antibacterial composite yarn according to the present invention. Detailed Implementation

[0036] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0037] Example 1

[0038] A process for preparing a heat-insulating and antibacterial composite yarn includes the following steps:

[0039] Fiber selection: Hollow core, adhesive yarn and covered yarn are selected;

[0040] During the softening process, hemp fibers are subjected to low-energy electron irradiation under an inert gas protective atmosphere. The radiation voltage is 400 keV, and the irradiation is repeated 3 times for 5 minutes each time.

[0041] In the fiber selection process, hollow silicone tubes are selected as the hollow body, hemp fibers are selected as the bonding yarn, and cotton fibers are used as the covering yarn.

[0042] The hemp fibers are softened before bonding the yarn, and then the softened hemp fibers are twisted.

[0043] Adhesive bonding process: Adhesive is used to evenly bond the bonding yarns to the outer surface of the hollow body;

[0044] Water-based adhesive is used during the bonding process. Several groups of softened hemp fibers are bonded to the outer surface of the hollow silicone tube using water-based adhesive. The several groups of softened hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube.

[0045] After the bonding process, flame retardant and bactericide are coated on the outer surface of the hollow silicone tube with hemp fiber bonded together, and the product coated with flame retardant and bactericide is heat-set.

[0046] Coating process: The coating yarn is wrapped around the outer surface of the bonded finished product using a friction spinning machine;

[0047] During the coating process, the friction spinning machine uses two friction drums rotating in the same direction to wrap the cotton fibers onto the surface of the core yarn.

[0048] During the coating process, the opening roller rotates at 2600 r / min, the friction roller rotates at 2200 r / min, the feed speed is 0.8 m / min, the output speed is 5.50 m / min, and the take-up speed is 7.50 m / min.

[0049] The adhesives used in the sizing process include cationic starch and polyvinyl alcohol. When preparing the sizing, polyvinyl alcohol after boiling is added to the cationic starch slurry at a temperature above 95°C to form a mixed adhesive.

[0050] Yarn treatment: The yarn obtained from the covering process is placed in a sizing machine for sizing treatment to obtain heat-insulating and antibacterial composite yarn;

[0051] During yarn processing, the adhesive is mixed and sized at 95°C for half an hour. The yarn obtained from the covering process is then sized using a single-yarn sizing machine with a single-immersion and single-press method. After sizing, the yarn is dried to obtain a heat-insulating and antibacterial composite yarn.

[0052] Example 2

[0053] A process for preparing a heat-insulating and antibacterial composite yarn includes the following steps:

[0054] Fiber selection: Hollow core, adhesive yarn and covered yarn are selected;

[0055] During the softening process, hemp fibers are subjected to low-energy electron irradiation under an inert gas protective atmosphere. The radiation voltage is 350 keV, and the irradiation is repeated 3 times for 7 minutes each time.

[0056] In the fiber selection process, hollow silicone tubes are selected as the hollow body, hemp fibers are selected as the bonding yarn, and cotton fibers are used as the covering yarn.

[0057] The hemp fibers are softened before bonding the yarn, and then the softened hemp fibers are twisted.

[0058] Adhesive bonding process: Adhesive is used to evenly bond the bonding yarns to the outer surface of the hollow body;

[0059] Water-based adhesive is used during the bonding process. Several groups of softened hemp fibers are bonded to the outer surface of the hollow silicone tube using water-based adhesive. The several groups of softened hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube.

[0060] After the bonding process, flame retardant and bactericide are coated on the outer surface of the hollow silicone tube with hemp fiber bonded together, and the product coated with flame retardant and bactericide is heat-set.

[0061] Coating process: The coating yarn is wrapped around the outer surface of the bonded finished product using a friction spinning machine;

[0062] During the coating process, the friction spinning machine uses two friction drums rotating in the same direction to wrap the cotton fibers onto the surface of the core yarn.

[0063] During the coating process, the opening roller rotates at 2600 r / min, the friction roller rotates at 2300 r / min, the feed speed is 0.9 m / min, the output speed is 6.50 m / min, and the take-up speed is 7.50 m / min.

[0064] The adhesives used in the sizing process include cationic starch and polyvinyl alcohol. When preparing the sizing, polyvinyl alcohol after boiling is added to the cationic starch slurry at a temperature above 95°C to form a mixed adhesive.

[0065] Yarn treatment: The yarn obtained from the covering process is placed in a sizing machine for sizing treatment to obtain heat-insulating and antibacterial composite yarn;

[0066] During yarn processing, the adhesive is mixed and sized at 95°C for half an hour. The yarn obtained from the covering process is then sized using a single-yarn sizing machine with a single-immersion and single-press method. After sizing, the yarn is dried to obtain a heat-insulating and antibacterial composite yarn.

[0067] Example 3

[0068] A process for preparing a heat-insulating and antibacterial composite yarn includes the following steps:

[0069] Fiber selection: Hollow core, adhesive yarn and covered yarn are selected;

[0070] During the softening process, hemp fibers are subjected to low-energy electron irradiation under an inert gas protective atmosphere. The radiation voltage is 300 keV, and the irradiation is repeated 4 times for 8 minutes each time.

[0071] In the fiber selection process, hollow silicone tubes are selected as the hollow body, hemp fibers are selected as the bonding yarn, and cotton fibers are used as the covering yarn.

[0072] The hemp fibers are softened before bonding the yarn, and then the softened hemp fibers are twisted.

[0073] Adhesive bonding process: Adhesive is used to evenly bond the bonding yarns to the outer surface of the hollow body;

[0074] Water-based adhesive is used during the bonding process. Several groups of softened hemp fibers are bonded to the outer surface of the hollow silicone tube using water-based adhesive. The several groups of softened hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube.

[0075] After the bonding process, flame retardant and bactericide are coated on the outer surface of the hollow silicone tube with hemp fiber bonded together, and the product coated with flame retardant and bactericide is heat-set.

[0076] Coating process: The coating yarn is wrapped around the outer surface of the bonded finished product using a friction spinning machine;

[0077] During the coating process, the friction spinning machine uses two friction drums rotating in the same direction to wrap the cotton fibers onto the surface of the core yarn.

[0078] During the coating process, the opening roller rotates at 2800 r / min, the friction roller rotates at 2400 r / min, the feed speed is 0.9 m / min, the output speed is 6.50 m / min, and the take-up speed is 7.50 m / min.

[0079] The adhesives used in the sizing process include cationic starch and polyvinyl alcohol. When preparing the sizing, polyvinyl alcohol after boiling is added to the cationic starch slurry at a temperature above 98°C to form a mixed adhesive.

[0080] Yarn treatment: The yarn obtained from the covering process is placed in a sizing machine for sizing treatment to obtain heat-insulating and antibacterial composite yarn;

[0081] During yarn processing, the adhesive is mixed and sized at 98°C for half an hour. The yarn obtained from the covering process is then sized using a single-yarn sizing machine with a single-immersion and single-press method. After sizing, the yarn is dried to obtain a heat-insulating and antibacterial composite yarn.

[0082] Comparative Example 1

[0083] See the composite yarn prepared in Example 3 of patent CN114703576B mentioned in the background section.

[0084] Three groups of yarns were produced according to the methods in Examples 1-3. The antibacterial properties of each group of composite yarns were tested according to the testing standard GB / T20994.3-2008, and the relevant data are recorded in the table below:

[0085]

[0086] It should be noted that the present invention provides a process for preparing a heat-insulating and antibacterial composite yarn. This yarn is prepared by producing multiple yarns, with a hollow main body as the center, and adhesive yarns are bonded to its surface to form an adhesive layer. A yarn layer is then wrapped around the outside of the adhesive layer. The resulting composite yarn has a vacuum structure and good heat-insulating effect.

[0087] This invention describes hemp fiber, which is softened and then twisted and bonded to a hollow silicone tube. This process gives the fiber better mechanical properties, UV protection, antibacterial properties, adsorption properties, and antistatic properties, resulting in a more complete composite yarn with better performance and wider applicability.

[0088] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A process for the preparation of a temperature retaining and antibacterial composite yarn, characterized in that, Includes the following steps: Fiber selection: Hollow core, adhesive yarn and covered yarn are selected; Adhesion process: Adhesive is used to evenly bond the bonding yarn to the outer surface of the hollow body; during the adhesion process, water-based adhesive is used to bond several groups of softened hemp fibers to the outer surface of the hollow silicone tube. The several groups of softened hemp fibers are distributed in a ring at equal intervals on the outer surface of the hollow silicone tube. Covering process: A friction spinning machine is used to wrap the covering yarn around the outer surface of the bonded finished product; during the covering process, the friction spinning machine uses two friction drums rotating in the same direction to wrap the cotton fibers around the surface of the core yarn; Yarn treatment: The yarn obtained from the covering process is placed in a sizing machine for sizing to obtain a heat-insulating and antibacterial composite yarn; The yarn obtained from the covering process is sizing using a single-yarn sizing machine with a single-immersion and single-press method, and then dried to obtain a heat-insulating and antibacterial composite yarn. In the fiber selection step, the hollow body is selected as a hollow silicone tube; The hemp fibers are softened before the bonding yarn is formed, and then the softened hemp fibers are twisted. During the softening process, hemp fibers are subjected to low-energy electron irradiation under an inert gas protective atmosphere. The radiation voltage is 350 keV, and the irradiation is repeated 3 times for 7 minutes each time. During the coating process, the rotation speed of the opening roller is 2600 r / min, the rotation speed of the friction roller is 2300 r / min, the feeding speed is 0.9 m / min, the output speed is 6.50 m / min, and the winding speed is 7.50 m / min; The adhesive used in the sizing process includes cationic starch and polyvinyl alcohol. When preparing the sizing, the polyvinyl alcohol after boiling is added to the cationic starch sizing solution at a temperature above 95°C to form a mixed adhesive. When treating yarn, mix the adhesive and sizing at 95°C for half an hour.

2. A process for the preparation of a temperature retaining anti-bacterial composite yarn as claimed in claim 1, wherein: The bonding yarn is made of hemp fiber, and the covering yarn is made of cotton fiber.

3. A process for the preparation of a temperature retaining anti-bacterial composite yarn as claimed in claim 1 wherein: After the bonding process, flame retardant and bactericide are coated on the outer surface of the hollow silicone tube with hemp fiber bonded together, and the product coated with flame retardant and bactericide is heat-set.

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