Processing method of filament high-strength polyester sewing thread

Abstract

The application relates to the technical field of filament high-strength polyester sewing thread processing, and discloses a filament high-strength polyester sewing thread processing method, which comprises the following steps: arranging and guiding a filament and a fiber bundle, fixing the filament and the fiber bundle, plying and drafting the filament and the fiber bundle, mixing the filament and the fiber bundle, intermittently twisting, heating and setting, uniformly dyeing, and ventilating and drying; and the strength of the sewing thread can be improved through the above processing method.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of filament high-strength polyester sewing thread processing, and particularly relates to a filament high-strength polyester sewing thread processing method. BACKGROUND

[0002] The polyester sewing thread is made of polyester synthetic plastic fiber, has the advantages of high strength, good wear resistance, low shrinkage, good moisture absorption and heat resistance, corrosion resistance, not easy to rot, not easy to be worm-eaten and the like. These characteristics make the polyester sewing thread widely used in the sewing of cotton fabrics, chemical fibers and blended fabrics. With the progress of polyester fiber supporting device technology and the continuous optimization of polyester technology, the production efficiency of the polyester sewing thread is gradually improved, meeting the needs of the textile industry.

[0003] Although the polyester sewing thread has many advantages, its strength still needs to be further improved in actual application. With the continuous improvement of consumers' requirements for clothing quality and appearance, the quality requirements for sewing thread are also continuously improved. Improving the strength of the polyester sewing thread can meet the needs of consumers for high-quality clothing and improve the market competitiveness of products. Moreover, in some specific application scenarios such as shoes, professional clothing, leather furniture and the like, the polyester sewing thread needs to bear greater tension and pressure. Improving the strength can ensure the stability and durability of the sewing thread in these application scenarios, reduce the situation of thread breakage and thread replacement, and improve the sewing efficiency.

[0004] Therefore, the application provides a filament high-strength polyester sewing thread processing method. SUMMARY

[0005] The application aims to improve the strength of the sewing thread and provides a filament high-strength polyester sewing thread processing method.

[0006] The technical scheme adopted by the application is as follows:

[0007] A filament high-strength polyester sewing thread processing method, the processing method steps are:

[0008] S1: The long filaments and the fiber bundles are arranged at a predetermined position and guided. A guiding device or a positioning clamp is used to determine the arrangement path and position of the long filaments and the fiber bundles, and then the long filaments and the fiber bundles are arranged through the predetermined holes, guide wheels and clamps one by one. In the arrangement process, the tension of the long filaments and the fiber bundles needs to be moderate to avoid excessive stretching or relaxation.

[0009] S2: The long filaments and the fiber bundles are fixed. After the arrangement is completed, a clamping device or an adhesive is used to fix the long filaments and the fiber bundles to prevent them from moving or deviating in the subsequent processing process. Whether the long filaments and the fiber bundles are arranged according to the predetermined path and position, whether they are fixed firmly, and whether there are any abnormalities or defects are checked.

[0010] S3: parallelizing and drawing, the plurality of filaments or fiber bundles are combined together to enable random superposition of different slivers, improve long sliver unevenness of the fiber assembly, and improve overall uniformity, and then the combined filaments or fiber bundles are drawn to make the fibers parallel and straight, the fiber bundles are separated into single fibers, and the straightness and parallelism of the fibers are improved;

[0011] S4: filament combining and mixing, different performance fibers are fully mixed through multiple combinations of the combining device to prevent "color difference" and ensure uniform mixing of the number of fibers in the cross section of the yarn;

[0012] S5: intermittent twisting, the combined filaments and fiber bundles are placed in a twisting device, the device is started to begin twisting, during the twisting process, the filaments and fiber bundles are subjected to circumferential twisting load, so that the fibers are intertwined and tightly combined with each other, and the twisting speed, twisting force value and twisting angle are controlled, after the twisting reaches a certain degree, the twisting needs to be temporarily stopped and the filaments and fiber bundles are allowed to release stress to a certain extent, then the above-mentioned twisting and releasing steps are repeated to form an intermittent twisting process, through multiple twisting and releasing, the combination between the filaments and fiber bundles will be more tightly, and the arrangement of the fibers will be more orderly;

[0013] S6: heating and setting, the intermittently twisted fibers are placed in a heat setting machine for heating, and the heating temperature and time are controlled to ensure that the fibers can be uniformly heated and achieve the desired heat setting effect, while heating, the fibers are stretched to achieve the desired size and shape, after stretching, the fibers are immediately cooled to reduce the temperature below the glass transition temperature of the fibers, thereby fixing the shape and size of the fibers, and forming the sewing thread;

[0014] S7: uniform dyeing, the set sewing thread is placed in a dye solution to ensure that the thread is completely immersed in the dye, and the dyeing process can be gently stirred to ensure uniform distribution of the dye;

[0015] S8: ventilation and drying, the dyed sewing thread is placed in a well-ventilated place to dry, direct sunlight is avoided to prevent the color of the thread from fading or deteriorating, and during the drying process, the excess water can be gently twisted off, but forceful rubbing is avoided to prevent damage to the texture of the thread.

[0016] In a preferred embodiment, the clamping device is a binding tape.

[0017] In a preferred embodiment, the number of filaments and fiber bundles during the combining is 6-8.

[0018] In a preferred embodiment, the combining device is a drawing frame.

[0019] In a preferred mode of the application, the speed of the twisting is 0.1-100 degrees / minute, the torsion value is 4.0-7.5 N·m, and the twisting angle is ±180 degrees.

[0020] In a preferred mode of the application, the filament is a polyester filament, and the fiber bundle is a cotton fiber bundle.

[0021] In a preferred mode of the application, the temperature of the heat setting is 180-210℃, and the heating time is 20-30 seconds.

[0022] In a preferred mode of the application, the cooling method is any one of cold air, cold water, or natural cooling.

[0023] In summary, due to the adoption of the above technical solutions, the application has the following advantages:

[0024] 1. In the application, the positioning and guiding and fixing of the filament and the fiber bundle are used to avoid the deviation or misalignment of the fibers in the subsequent processing, thereby ensuring the uniformity and consistency of the sewing thread. Then, the sliver is drawn and thinned by the doubling stretching, the fibers are parallel and straightened, the fiber bundle is separated into single fibers, the fineness and uniformity of the sewing thread are improved, and the cohesion between the fibers is also enhanced, thereby improving the strength of the sewing thread.

[0025] 2. In the application, the doubling mixing can uniformly mix fibers of different properties or colors, so that the sewing thread has better color and performance, makes up for the shortcomings of single fibers, improves the strength of the sewing thread, then uses intermittent twisting to increase the twist and elasticity of the sewing thread, so that it has better wear resistance and anti-breaking property in use, and the surface of the sewing thread is smoother, reducing the friction with the fabric, thereby improving the strength and quality of the sewing thread.

[0026] 3. In the application, the heat setting treatment eliminates the internal stress accumulated in the fabric, so that the size and shape of the fabric are stable and difficult to produce difficult-to-remove creases, thereby improving the dimensional stability of the sewing thread in the processing and use process. During the heat setting process, the fiber molecular chains are reoriented and arranged, so that the fiber structure is more compact, thereby improving the strength of the sewing thread. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 The figure is a processing flow chart of the high-strength polyester sewing thread of the application. DETAILED DESCRIPTION

[0028] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with Figure 1 A filament high-strength polyester sewing thread processing method is described in detail. Embodiments

[0030] Referring to Figure 1 A filament high-strength polyester sewing thread processing method, the processing method steps are: first, the filament and the fiber bundle are positioned and guided, the path and position of the filament and the fiber bundle are determined using a guiding device or a positioning clamp, and then the filament and the fiber bundle are threaded through the predetermined holes, guide rollers and clamps one by one. In the threading process, the tension of the filament and the fiber bundle needs to be moderate to avoid excessive stretching or relaxation. The filament is a polyester filament, and the fiber bundle is a cotton fiber bundle. Then the filament and the fiber bundle are fixed, and after the threading is completed, the filament and the fiber bundle are fixed using a clamping device or an adhesive to prevent movement or deviation during subsequent processing. The clamping device is a binding tape, and whether the filament and the fiber bundle are threaded according to the predetermined path and position, whether they are fixed firmly, and whether there are any abnormalities or defects are checked. Finally, the filaments are combined and drawn out to make the different thicknesses of the strips randomly overlap, improve the unevenness of the long segments of the fiber assembly, and improve the overall uniformity. Then the combined filament or fiber bundle is drawn out and thinned using a roller stretching mechanical device, so that the fibers are parallel and straight, the fiber bundle is separated into single fibers, and the straightness and parallelism of the fibers are improved. Specifically, the positioning and guiding of the filament and the fiber bundle are used to avoid deviation or misalignment of the fibers during subsequent processing, thereby ensuring the uniformity and consistency of the sewing thread. Then the filaments are drawn out and thinned by the filament stretching to make the fibers parallel and straight, separate the fiber bundle into single fibers, improve the fineness and uniformity of the sewing thread, and also enhance the cohesion between the fibers, thereby improving the strength of the sewing thread.

[0031] Referring to Figure 1And the number of filaments and fiber bundles during the doubling is 6-8, and the different performance fibers are fully mixed through the multiple doubling of the doubling device, which is a drawing frame, to prevent the generation of "color difference" and ensure the uniform mixing of the number of fibers on the cross section of the yarn; then intermittent twisting, the doubled filaments and fiber bundles are placed in the twisting device, and the device is started to begin twisting. During the twisting process, the filaments and fiber bundles will be subjected to circumferential twisting load, so that the fibers are intertwined and tightly combined with each other. The speed, torque value and twisting angle of the twisting are controlled well. After the twisting reaches a certain degree, the twisting needs to be temporarily stopped and the filaments and fiber bundles are allowed to release stress to a certain extent. Then the above-mentioned twisting and releasing steps are repeated to form an intermittent twisting process. Through multiple twisting and releasing, the combination between the filaments and fiber bundles will be more tightly, and the arrangement of the fibers will be more orderly. The twisting speed is 0.1-100 degrees / minute, the torque value is 4.0-7.5 N·m, and the twisting angle is ±180 degrees. Specifically, the doubling and mixing can uniformly mix fibers of different properties or colors to make the sewing thread have better color and performance, make up for the shortcomings of single fibers, and improve the strength of the sewing thread. Then the intermittent twisting is used to increase the twist and elasticity of the sewing thread, so that it has better wear resistance and anti-breaking property in use, and the surface of the sewing thread is smoother, reducing the friction with the fabric, thereby improving the strength and quality of the sewing thread.

[0032] Referring to Figure 1 Heating setting, the fibers after intermittent twisting are placed in a heat setting machine for heating, and the heating temperature and heating time are well controlled to ensure that the fibers can be uniformly heated and achieve the required heat setting effect. At the same time of heating, the fibers are stretched to achieve the required size and morphology. After stretching, the fibers are immediately cooled to reduce the temperature below the glass transition temperature of the fibers, thereby fixing the morphology and size of the fibers to form the sewing thread; the cooling method is any one of cold air, cold water or natural cooling; uniform dyeing, the set sewing thread is placed in a dye solution to ensure that the thread is completely immersed in the dye. The dyeing process can be gently stirred to ensure uniform distribution of the dye; ventilation and drying the dyed sewing thread is placed in a well-ventilated place to dry, avoiding direct sunlight exposure to prevent the color of the thread from fading or deteriorating. Excess water can be twisted off gently during the drying process, but forceful rubbing is avoided to prevent damage to the texture of the thread; the heating setting temperature is 180-210℃, and the heating time is 20-30 seconds; specifically, through the heat setting treatment, the internal stress accumulated in the fabric is eliminated, and the size and morphology of the fabric are stabilized, so that difficult-to-remove creases are not easily generated, thereby improving the dimensional stability of the sewing thread during processing and use. During the heat setting process, the molecular chains of the fibers are reoriented and arranged, making the fiber structure more compact, thereby improving the strength of the sewing thread.

[0033] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0034] The above examples are merely used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A process for the manufacture of high tenacity polyester sewing thread filaments, characterized in that, The processing method steps are: S1: The filaments and fiber bundles are guided and positioned, and the guiding device or positioning clamp is used to determine the threading path and position of the filaments and fiber bundles, and then the filaments and fiber bundles are threaded through the predetermined holes, guide wheels and clamps one by one, and in the threading process, the tension of the filaments and fiber bundles needs to be kept moderate to avoid excessive stretching or relaxation; S2: The filaments and fiber bundles are fixed, and after threading is completed, the clamping device or adhesive is used to fix the filaments and fiber bundles to prevent them from moving or deviating during subsequent processing, and it is checked whether the filaments and fiber bundles are threaded according to the predetermined path and position, whether they are fixed firmly, and whether there are any abnormalities or defects; S3: The filaments and fiber bundles are combined together, the different thickness segments of different strips are randomly superimposed, the long segment unevenness of the fiber assembly is improved, the overall uniformity is improved, and then the combined filaments or fiber bundles are drawn and thinned by using a roller stretching mechanical device, so that the fibers are parallel and straight, the fiber bundles are separated into single fibers, and the straightness and parallelism of the fibers are improved; S4: The filaments are combined and mixed, different performance fibers are fully mixed through multiple combinations of the combination equipment, "color difference" is prevented, and uniform mixing of the number of fibers on the cross section of the yarn is ensured; S5: Intermittent torsion, the filaments and fiber bundles are placed in the torsion equipment, the equipment is started to begin torsion, and in the torsion process, the filaments and fiber bundles are subjected to circumferential torsion loading, so that the fibers are intertwined and tightly combined with each other, and the speed, torsion value and torsion angle of the torsion are controlled, and after the torsion reaches a certain degree, the torsion needs to be temporarily stopped and the filaments and fiber bundles are allowed to release stress to a certain extent, and then the above-mentioned torsion and release steps are repeated to form an intermittent torsion process, and through multiple torsion and release, the combination between the filaments and fiber bundles is more tightly, and the arrangement of the fibers is more orderly; S6: Heating and setting, the intermittently torsioned fibers are placed in a heat setting machine for heating, and the heating temperature and time are controlled to ensure that the fibers can be uniformly heated and achieve the required heat setting effect, and in the heating process, the fibers are stretched to achieve the required size and shape, and after stretching, the fibers are immediately cooled to reduce the temperature below the glass transition temperature of the fibers, so as to fix the shape and size of the fibers, and form the sewing thread; S7: Uniform dyeing, the set sewing thread is placed in a dye solution to ensure that the thread is completely immersed in the dye, and the dyeing process can be gently stirred to ensure uniform distribution of the dye; S8: Ventilation and drying, the dyed sewing thread is placed in a well-ventilated place to dry, and direct sunlight exposure is avoided to prevent the color of the thread from fading or deteriorating, and during the drying process, the excess water can be gently twisted off, but forceful rubbing is avoided to prevent damage to the texture of the thread.

2. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein: The clamping device is a binding belt.

3. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The number of filaments and fiber bundles during the combination is 6-8.

4. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The combination equipment is a drawing frame.

5. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The speed of the twisting is 0.1-100 degrees / minute, the torque value is 4.0-7.5 N·m, and the twisting angle is ±180 degrees.

6. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The filament is a polyester filament, and the fiber bundle is a cotton fiber bundle.

7. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The temperature of the heating setting is 180-210 DEG C, and the heating time is 20-30 seconds.

8. A process for making high tenacity polyester sewing thread filaments as claimed in claim 1, wherein the said process is characterized by: The cooling treatment mode is any one of cold air, cold water or natural cooling.

Images