Composite yarn and method of making same

Abstract

The application discloses a kind of composite yarn and preparation method thereof, belong to textile fiber technical field, composite yarn, the yarn is formed by SPH-FDY silk and POY silk, the SPH-FDY silk is formed by two different viscosity PET silk.The preparation method includes: the POY silk is successively heated, cooled, false twist and combined with SPH-FDY silk winding forming, the heating temperature of POY silk is 160~185 DEG C, and the false twist D / Y ratio of POY silk is 1.2~2.0.A kind of elastic yarn with new hand feeling and moisture absorption and quick drying function is prepared by using polyester cross-shaped section POY silk and double-component SPH-FDY silk through compounding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textile fibers, in particular to a composite yarn and a preparation method thereof. BACKGROUND

[0002] With the improvement of people's living standards, participating in outdoor activities has gradually become a way of life for people, especially in recent years, environmental changes and the greenhouse effect of the earth have caused the average temperature to rise, making people pay more attention to the lightness, moisture absorption and quick drying of clothing fabrics. Functional fabrics are increasingly filling all aspects of people's lives, bringing convenience and comfort to people, such as some sports fields, which require lightweight and sweat-absorbing and quick-drying clothing. When exercising, the body sweat needs to be quickly absorbed and evaporated in time to keep the body dry. For example, the China Utility Model Patent with the publication number CN216947361U discloses a moisture-absorbing and quick-drying polyester fabric, which comprises a face layer and a lining layer that are sewn together. The lining layer is fixedly connected with a convex net on the side away from the face layer, and a plurality of recesses are formed between the lining layer and the convex net. The lining layer is formed by weaving a plurality of shape-changing yarns. Although the above-mentioned patent can achieve the purpose of air permeability through the setting of the fabric structure, its application range is small and it is easy to snag, which cannot meet the needs of users for good fabric hand feeling, anti-snagging and quick moisture absorption and quick drying performance. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a yarn with anti-snagging and moisture absorption and quick drying functions and a preparation method thereof.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] The composite yarn is composed of SPH-FDY yarn (double-component elastic fiber) and POY (pre-oriented polyester filament) yarn, which are false twisted together. The SPH-FDY yarn is composed of two PET yarns with different viscosities.

[0006] The preparation method of the composite yarn comprises the following steps: the POY yarn is sequentially subjected to heating, cooling, and false twisting, and then is combined with the SPH-FDY yarn. The heating temperature of the POY yarn is 160-185°C, and the false twisting D / Y ratio of the POY yarn is 1.2-2.0.

[0007] The present application has the advantages that a yarn and a preparation method thereof are provided. The yarn prepared by using a specific heating temperature and false twisting D / Y ratio of POY yarn has greatly improved evaporation rate, wicking height, and drop diffusion rate, i.e., the yarn has the performance of second moisture absorption and quick drying. In addition, the SPH-FDY yarn is made of POY yarn double-component material, which improves the anti-snagging performance of the POY yarn. The fabric end uses a unique single-mesh weaving process, which greatly improves the moisture absorption and quick drying capacity of the yarn fabric. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the yarn transverse direction of the present invention (magnified 300 times);

[0009] Figure 2 This is a longitudinal schematic diagram of the yarn of the present invention (magnified 300 times). Detailed Implementation

[0010] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0011] Please refer to Figure 1 as well as Figure 2 The composite yarn is made of SPH-FDY yarn and POY yarn in a false twisted composite, wherein the SPH-FDY yarn is made of two PET yarns with different viscosities.

[0012] A method for preparing composite yarn, wherein the POY yarn is sequentially heated, cooled, false-twisted, and then wound together with SPH-FDY yarn to form a composite yarn. The heating temperature of the POY yarn is 160-185℃, and the false twist D / Y ratio of the POY yarn is 1.2-2.0.

[0013] Furthermore, the heating temperature of the POY yarn is 168–178°C.

[0014] Furthermore, the false twist D / Y ratio of the POY yarn is 1.4 to 1.8.

[0015] As can be seen from the above description, the beneficial effects of the present invention are as follows: using polyester cross-shaped POY yarn and bicomponent SPH-FDY yarn as raw materials, the prepared yarn has the effect of quick moisture absorption and quick drying; it has both the fluffy and soft cotton feel of POY yarn after elastication and the smooth feel of FDY yarn; and it has better anti-snagging properties under the same weight of fabric.

[0016] Because the cross-shaped POY yarn will reduce its irregularity or flatten the cross shape after stretching and deformation, it is necessary to control the heating temperature and the D / Y ratio to minimize the change in the irregularity of the POY yarn. In particular, since the POY yarn has an irregular cross section, the heating temperature of the POY yarn has a significant impact on the yarn's irregularity and bulkiness. POY yarn will experience thermal shrinkage when heated. If the temperature is too high, the bulkiness will be improved, but the irregularity of the yarn will be destroyed. By setting the temperature within the above-mentioned range, the prepared yarn will have good bulkiness without significantly changing the yarn's irregularity.

[0017] The conventional cotton-like yarn requires good cotton feeling, and the heating temperature and D / Y ratio need to be increased. The higher heating temperature makes the yarn have higher loftiness. The cross-shaped POY yarn is used, and the conventional higher heating temperature and D / Y ratio will affect the cross-shaped cross-section of the yarn, resulting in the decrease of the moisture absorption and quick drying performance of the yarn. Through the setting of the above temperature range and the combination of the D / Y ratio range, the prepared yarn has both loftiness and moisture absorption and quick drying performance.

[0018] Further, the mass ratio of the SPH-FDY yarn and the POY yarn is 0.5-2.

[0019] Further, the mass ratio of the SPH-FDY yarn and the POY yarn is 0.5-2.

[0020] As can be seen from the above description, the conventional yarn has low elasticity, and the use of the SPH-FDY yarn double-component composite material makes the yarn have good elasticity. When the yarn is used to weave fabric, the fabric has better stretch and rebound performance.

[0021] Further, the SPH-FDY yarn is composed of a first PET yarn and a second PET yarn, the viscosity of the first PET yarn is 0.92-1.12 dl / g, and the viscosity of the second PET yarn is 0.40-0.60 dl / g.

[0022] Further, the SPH-FDY yarn is composed of a first PET yarn and a second PET yarn, the viscosity of the first PET yarn is 0.92-1.12 dl / g, and the viscosity of the second PET yarn is 0.40-0.60 dl / g.

[0023] As can be seen from the above description, the conventional melt polycondensation PET yarn chip adopts the same viscosity, and the viscosity is about 0.7 dl / g. The first PET yarn and the second PET yarn with two different viscosities are used in the application. Due to the viscosity difference, the fiber naturally bends and can produce good rebound elasticity.

[0024] Further, the mass ratio of the first PET yarn and the second PET yarn is 0.5-2.

[0025] Further, the mass ratio of the first PET yarn and the second PET yarn is 0.5-2.

[0026] As can be seen from the above description, by limiting the mass ratio of the first PET yarn and the second PET yarn, the double-component SPH-FDY can produce natural curling effect, and after being compounded with the POY yarn, the yarn produces elasticity.

[0027] Further, the false twist uses a false twister, and the false twister uses a polyurethane material disc.

[0028] From the above description, it can be seen that the polyurethane disc is used, the 1-5-1 disc combination is used, the traditional PU disc is soft and low in hardness, the damage degree of the fiber is reduced by using the polyurethane disc with a hardness of 88, the fiber damage is minimized by combining the specific D / Y ratio, and the cross-section of the DTY after being added with the elastic is ensured to be not changed too much.

[0029] Further, the composite includes the following steps: the SPH-FDY yarn and the POY yarn are sequentially subjected to feeding traction, network composite, oiling, winding and forming to obtain.

[0030] From the above description, it can be seen that the yarn obtained by using the bicomponent SPH-FDY yarn and the cross-shaped POY yarn has the fluffy effect of the POY yarn and the draping effect of the FDY yarn, and the shrinkage and elasticity of the FDY yarn make the fabric dry and crisp to obtain a new hand feeling.

[0031] Further, the draft ratio of the feeding traction is 1.55-1.75.

[0032] Further, the draft ratio of the feeding traction is 1.65.

[0033] From the above description, it can be seen that by limiting the draft ratio of the feeding traction, the unevenness of the draft force is reduced, and the draft force is kept stable.

[0034] Further, the overfeed rate during winding is-5.3 to-3.3, and the overfeed rate during forming is-4.6 to-2.6.

[0035] Further, the overfeed rate during winding is-4.3, and the overfeed rate during forming is-3.6.

[0036] From the above description, it can be seen that by limiting the overfeed rate of winding and forming respectively, the size of the tension is adjusted, the shrinkage of the fabric is reduced, and the size of the fabric is stable.

[0037] Embodiment one of the present application is:

[0038] The composite yarn is composed of SPH-FDY yarn and POY yarn with a mass ratio of 1:1, the SPH-FDY yarn is composed of first PET yarn and second PET yarn with a mass ratio of 1:1, the viscosity of the first PET yarn is 1.02 dl / g, and the viscosity of the second PET yarn is 0.50 dl / g.

[0039] Embodiment two of the present application is:

[0040] A composite yarn is composed of SPH-FDY yarn and POY yarn with a mass ratio of 1:0.5, the SPH-FDY yarn is composed of first PET yarn and second PET yarn with a mass ratio of 1:0.5, the first PET yarn has a viscosity of 0.92 dl / g, and the second PET yarn has a viscosity of 0.40 dl / g.

[0041] Embodiment three of the present application is:

[0042] A composite yarn is composed of SPH-FDY yarn and POY yarn with a mass ratio of 1:2, the SPH-FDY yarn is composed of first PET yarn and second PET yarn with a mass ratio of 1:2, the first PET yarn has a viscosity of 1.12 dl / g, and the second PET yarn has a viscosity of 0.60 dl / g.

[0043] Embodiment four of the present application is:

[0044] A preparation method of a composite yarn is adopted in the composite yarn with the ratio in embodiment one, and includes the following steps: the POY yarn is sequentially heated by a first heat box, cooled by a cooling plate, and false twisted by a false twister, and then is combined with the SPH-FDY yarn, the false twister adopts a polyurethane disc, and the combination includes the following steps: the SPH-FDY yarn and the POY yarn are sequentially fed, drawn, combined by a light mesh, oiled by an oil wheel mechanism, wound, and formed to be prepared, the feeding and drawing speed is 550 m / min, the drawing ratio of the feeding and drawing is 1.65, the overfeed rate of the winding is-4.3, the overfeed rate of the forming is-3.6, the heating temperature of the POY yarn is 168 ℃, and the false twist D / Y ratio of the POY yarn is 1.4, wherein, the single-mesh weaving organization chart is shown in Table 1, wherein, a dash represents a floating line, ∧ represents a down loop, and ∩ represents a down integrated loop.

[0045] Table 1

[0046]

[0047] Embodiment five of the present application is:

[0048] The difference between embodiment five and embodiment four is that the heating temperature of the POY yarn is 178 ℃, and the false twist D / Y ratio of the POY yarn is 1.8.

[0049] Embodiment six of the present application is:

[0050] The difference between embodiment six and embodiment four is that the heating temperature of the POY yarn is 172 ℃, and the false twist D / Y ratio of the POY yarn is 1.6.

[0051] Comparative example one is:

[0052] The difference between the comparative example 1 and the example 4 is only that the heating temperature of the POY yarn is 190℃.

[0053] The comparative example 2 is:

[0054] The difference between the comparative example 2 and the example 4 is only that the false twist D / Y ratio of the POY yarn is 2.2.

[0055] The comparative example 3 is:

[0056] The difference between the comparative example 3 and the example 1 is only that the yarn is compounded by the FDY and the POY yarn.

[0057] The moisture absorption and quick drying performance test and the anti-picking test are carried out on the example 4 and the comparative examples 1-3, the moisture absorption and quick drying performance test is carried out according to GB / T 21655.1-2008, and the results are shown in Table 2, and the anti-picking test is carried out according to GB / T 11047-2022, and the results are shown in Table 3.

[0058] Table 2

[0059]

[0060] Table 3

[0061] Yarn pattern Test surface Test data Example four Positive 4.0 Comparative example one Positive 2.5 Comparative example two Positive 2.6 Comparative example three Positive 2.0

[0062] From the above table, compared with the comparative example 1 and the comparative example 2, the example 4 adopts the specific heating temperature and the false twist D / Y ratio of the POY yarn, so that the evaporation rate and the wicking height of the prepared yarn are greatly improved, and the drop water diffusion rate is improved, that is, the prepared yarn has the performance of seconds of moisture absorption and quick drying, and compared with the comparative example 3, the example 4 adopts the SPH-FDY yarn elastic fiber of the dual-component material, the moisture absorption and quick drying performance is improved, and the anti-picking performance is also improved.

[0063] In summary, the composite yarn and the preparation method thereof provided by the application set the specific processing temperature and the D / Y ratio, so that the prepared yarn has the loft effect of the POY yarn and the drape of the FDY, and the shrinkage and elasticity of the FDY make the fabric dry and crisp to obtain a new hand feeling. The finished yarn combines the unique single-mesh weaving process of the ZD06 single-machine large cutting machine, and further improves the moisture absorption and quick drying performance of the yarn on the fabric end.

[0064] The above is only an embodiment of the application, and does not limit the patent range of the application, and any equivalent transformation or direct or indirect application in the related technical field according to the content of the specification and the drawings of the application is also included in the patent protection range of the application.

Claims

1. A method for preparing a composite yarn, characterized in that, POY yarn is heated, cooled, false-twisted, and then wound together with SPH-FDY yarn to form a shape. The heating temperature of the POY yarn is 160~185℃, and the false twist D / Y ratio of the POY yarn is 1.2~2.

0. The SPH-FDY yarn is composed of a first PET yarn and a second PET yarn. The viscosity of the first PET yarn is 0.92 dl / g to 1.12 dl / g, and the viscosity of the second PET yarn is 0.40 dl / g to 0.60 dl / g. The POY yarn is a cross-shaped POY yarn.

2. The method for preparing composite yarn according to claim 1, characterized in that, The mass ratio of SPH-FDY yarn to POY yarn is 0.5~2.

3. The method for preparing composite yarn according to claim 1, characterized in that, The mass ratio of the first PET filament to the second PET filament is 0.5 to 2.

4. The method for preparing composite yarn according to claim 1, characterized in that, The false twist D / Y ratio of the POY yarn is 1.4~1.

8.

5. The method for preparing composite yarn according to claim 1, characterized in that, The false twist is achieved using a false twister, which is made of polyurethane discs.

6. The method for preparing composite yarn according to claim 1, characterized in that, The composite process includes the following steps: the SPH-FDY yarn and POY yarn are sequentially fed and drawn, combined, oiled, wound and formed to obtain the composite.

7. The method for preparing composite yarn according to claim 6, characterized in that, The draw ratio of the feeding traction is 1.55~1.

75.

8. The method for preparing composite yarn according to claim 6, characterized in that, The overfeed rate during winding is -5.3 to -3.3, and the overfeed rate during molding is -4.6 to -2.6.

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