A shaker pile fabric, a preparation method and application thereof

Abstract

The application provides a shake wool fabric, a preparation method and application thereof. The shake wool fabric comprises a connecting layer and first and second fabric layers respectively located on two sides of the connecting layer, and at least one of the first and second fabric layers is a shake wool layer. The connecting layer is an assembly layer comprising connecting filaments, and the connecting filaments comprise coffee carbon and polytrimethylene terephthalate-polyethylene terephthalate polymers. The special composition of the shake wool fabric not only makes it have excellent heat production and warm-keeping performance, but also has a longer service life, which is beneficial to making the shake wool product a selection of more consumers.

Description

Technical Field

[0001] This invention relates to a fabric, and more particularly to a fleece fabric, its preparation method, and its application, belonging to the field of textile technology. Background Technology

[0002] Fleece fabric, a type of knitted fabric, is mostly produced by processing polyester fibers from a knitted base through processes such as napping, combing, and fleecing. Its wrinkle-resistant and warm properties have made it a popular choice for autumn and winter clothing.

[0003] However, because the warmth retention of fleece fabric is positively correlated with its thickness, high-quality fleece often results in overly thick garments, making it difficult to simultaneously meet consumers' demands for both warmth and aesthetics. Furthermore, fleece fabric has a relatively short lifespan, particularly prone to deformation and hardening after washing, and significant shedding that reduces its warmth. Therefore, fleece fabric has an extremely limited market share in apparel products. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides a fleece fabric. The special composition of this fleece fabric not only gives it excellent heat generation and insulation properties but also extends its service life, making fleece products a more popular choice for consumers.

[0005] The present invention also provides a method for preparing the above-mentioned fleece fabric. This method is simple and easy to operate, prolongs the fiber stability of the fleece fabric, and effectively avoids the occurrence of shedding.

[0006] The present invention also provides an garment comprising the above-mentioned fleece fabric, which thus has the characteristics of being warm, beautiful, skin-friendly, and lint-free.

[0007] The present invention provides a fleece fabric, comprising a connecting layer and a first fabric layer and a second fabric layer located on both sides of the connecting layer, wherein at least one of the first fabric layer and the second fabric layer is a fleece layer.

[0008] The connecting layer is an aggregate layer comprising connecting wires, which include coffee carbon and polyethylene terephthalate-propylene terephthalate polymer.

[0009] In the fleece fabric described above, the coffee carbon content in the connecting yarn is 5-10% by mass.

[0010] The fleece fabric described above, wherein the surface of the connecting yarn has grooves.

[0011] The fleece fabric as described above, wherein the fineness of the connecting yarn is 50D / 24F-150D / 72F.

[0012] The fleece fabric described above, wherein the first fabric layer is a fleece layer and the second fabric layer is a cotton layer.

[0013] The fleece fabric described above comprises, by weight percentage: 20%~40% cotton layer, 50%~70% fleece layer, and 10%~20% connecting layer.

[0014] The fleece fabric described above, wherein the weight of the fleece fabric is 280-360 g / m². 2 .

[0015] The fleece fabric as described above, wherein the cotton layer comprises 32-40S combed cotton, and / or the fleece layer comprises 100D / 144F-155D / 144F double-yarn polyester fiber.

[0016] The present invention also provides a method for preparing the fleece fabric described in any one of the above claims, comprising the following steps:

[0017] 1) After the base fabric undergoes the first shaping treatment, the first shaped product is obtained;

[0018] 2) The first shaped product is subjected to a pre-treatment of granulation followed by a granulation treatment to obtain a granulated product;

[0019] 3) The fleece product is subjected to a second shaping treatment to obtain the fleece fabric;

[0020] The base fabric includes a connecting layer and a fleece precursor located on at least one side of the connecting layer;

[0021] The temperature of the first shaping treatment is 160-180℃, and the time is 15-30 minutes;

[0022] The second shaping treatment is carried out at a temperature of 160-180℃ for 15-30 minutes.

[0023] The present invention also provides an garment, at least a portion of which is obtained by processing the fleece fabric described in any of the above claims or the fleece fabric prepared above.

[0024] The fleece fabric provided by this invention, through the inclusion of a connecting layer with a special composition, enhances both far-infrared heating and warmth retention properties, addressing the current pain point of "the warmer, the bulkier," and meeting consumers' demand for lightweight warmth. It also makes the fabric fluffy, soft, and resistant to deformation and hardening. Furthermore, the connecting layer, acting as a medium to fix the fleece layer, enhances the strength and shape retention of the fleece fabric, reducing the possibility of shedding. Therefore, the fleece fabric of this invention effectively solves consumer pain points and has broad market prospects. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions in the embodiments of this invention will be clearly and completely described below in conjunction with the embodiments of this invention. Obviously, the described embodiments are only some embodiments of this invention, not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0026] The first aspect of the present invention provides a fleece fabric, comprising a connecting layer and a first fabric layer and a second fabric layer respectively located on both sides of the connecting layer, wherein at least one of the first fabric layer and the second fabric layer is a fleece layer; wherein the connecting layer is an aggregate layer comprising connecting filaments, the connecting filaments comprising coffee carbon and polyethylene terephthalate polymer.

[0027] In detail, the fleece fabric of the present invention includes three layers: a connecting layer, a first fabric layer located on one side of the connecting layer, and a second fabric layer located on the other side of the connecting layer. The first fabric layer and the second fabric layer refer to products formed by cross-linking, knotting, etc., including fibers and cellulose containing polymer compounds, which are mostly soft. At least one of the first fabric layer and the second fabric layer is a fleece layer.

[0028] The first fabric layer and the second fabric layer are respectively fixed to both sides of the connecting layer. The present invention does not limit the method of fixing the first fabric layer and the second fabric layer to the connecting layer. For example, the first fabric layer and the second fabric layer to the connecting layer can be fixed separately by weaving, or the first fabric layer and the second fabric layer to the connecting layer can be fixed separately by adhesive bonding.

[0029] The connecting layer of the present invention includes connecting wires, and the connecting wires are connected to each other to form a connecting layer. Similarly, the present invention does not limit the way the connecting wires are connected, and the connecting layer can be obtained by using an adhesive, or by crossing or winding the connecting wires.

[0030] Specifically, the connecting wire comprises coffee carbon and a poly(propylene terephthalate)-poly(ethylene terephthalate) polymer. The coffee carbon is nanoparticles formed by grinding coffee grounds after high-temperature calcination (at least 1000°C). The poly(propylene terephthalate)-poly(ethylene terephthalate) polymer refers to the polymer product of poly(propylene terephthalate) and poly(ethylene terephthalate). This invention does not limit the molecular weight of poly(propylene terephthalate) and poly(ethylene terephthalate), nor does it limit their mass ratio during polymerization. Any polymer containing poly(propylene terephthalate) and poly(ethylene terephthalate) falls within the scope of this invention. In one specific embodiment, the connecting wire can be obtained by adding the aforementioned coffee carbon to the polymerization system of poly(propylene terephthalate) and poly(ethylene terephthalate), followed by a series of post-treatments including stretching. The connecting wire can be of type DTY or FDY.

[0031] Based on the same organizational structure, weight, and composition, compared with commercially available fleece fabrics, the fleece fabric of this invention not only has excellent heat retention and far-infrared emissivity, achieving superior heat storage and warmth retention performance with a lower thickness, satisfying the current consumer's aesthetic preference for lightweight and slim fit while maintaining warmth, but also exhibits outstanding elastic recovery rate and constant load elongation, thus giving it the characteristics of being soft, fluffy, highly elastic, long-lasting in shape, and non-shedding.

[0032] The inventor analyzed the principle behind the above-mentioned effects and believes that, on the one hand, the coffee carbon in the connecting wire forms a large number of nanopores during the calcination process. These nanopores can serve as places to absorb and store heat. When the coffee carbon absorbs heat radiation from the human body or the outside world, it radiates far-infrared rays with a wavelength range of 2.5~30μm through molecular energy level jumps. Among them, the far-infrared rays with a wavelength of 4~14μm, known as the reproductive wavelength, are close to the vibration frequency of cell molecules in the human body, which will cause cell molecules to resonate, thereby generating a thermal effect. This activates the cells on the surface of the human body, promotes and improves the microcirculation of human blood, and thus makes the fleece fabric exhibit excellent heat storage and warmth retention properties.

[0033] On the other hand, compared to polyethylene terephthalate (PET), propylene glycol terephthalate (PTY) exhibits superior shrinkage, crystallinity, and elasticity. Therefore, although the molecular chains in the crystalline regions are prone to deformation during elongation, relative slippage does not occur, thus maintaining structural stability. The differences in shrinkage, crystallinity, and elasticity between the two result in different high-temperature shrinkage rates. Consequently, the connecting yarn can exhibit a 3D crimped structure with excellent elastic recovery and shape retention. This not only gives the fleece fabric its soft, fluffy, highly elastic, and long-lasting shape-retention characteristics, but the excellent elastic recovery also allows the connecting layer to bond more tightly with the first and second fabric layers, reducing shedding and extending the lifespan of the fleece fabric in terms of warmth, feel, and appearance.

[0034] Of course, the 3D curled structure is also one of the reasons for achieving heat storage and insulation. This is because the curled state of the 3D curled structure helps to lock in the heat stored in the nanopores of the coffee bomb, and to a certain extent isolates the heat loss caused by the low temperature environment.

[0035] In the specific implementation of this invention, the mass percentage of coffee carbon in the connecting yarn is generally controlled to be above 0.01%. Reasonably controlling the amount of coffee carbon added to the connecting yarn is beneficial to further improving the heat storage and insulation performance of the fleece fabric; therefore, the mass percentage of coffee carbon in the connecting yarn can be controlled to be above 5%.

[0036] Of course, differences in the molecular weight of the polymers in the connecting fibers, or variations in the ratio of polypropylene terephthalate (PPD) to polyethylene terephthalate (PET) within the polymer, will affect the heat storage and insulation performance of the connecting fibers to some extent. Therefore, generally speaking, given the aforementioned differences in polymer types, when the mass percentage of coffee carbon in the connecting fibers is controlled at 5-10%, the heat storage and insulation performance of the fleece can generally reach a level that satisfies consumers.

[0037] Furthermore, the surface of the connecting yarn has grooves. These grooves can be distributed on the surface of the connecting yarn in any shape and direction. Besides enhancing heat retention and reducing shedding, these grooves also have moisture-wicking properties, further enhancing the user experience by improving the dryness of the fleece fabric. In one specific embodiment, grooves are ultimately formed on the surface of the connecting yarn by making the fibers constituting the connecting yarn have grooves. Specifically, these grooves can be observed using a scanning electron microscope.

[0038] Due to the special composition of the connecting yarn, when the fineness of the connecting yarn is 50D / 24F-150D / 72F, it is possible to simultaneously ensure the strength of the connecting layer, as well as the elastic recovery performance and shape retention of the fleece fabric. In this invention, the unit "D" represents the fineness of the connecting yarn, specifically the weight in grams per 9000 meters of length at a standard moisture regain; the unit "F" represents the number of strands in the connecting yarn, specifically the number of microfibers in a single connecting yarn.

[0039] It should be explained that, within the aforementioned linear density range, in specific applications of fleece fabrics, the connecting layer can be an aggregate of connecting yarns with the same linear density or an aggregate of connecting yarns with different linear densities. When the connecting yarns in the connecting layer have different linear densities, the strength of the connecting layer, as well as the elastic recovery and shape retention of the fleece fabric, are superior.

[0040] In one specific embodiment, the first fabric layer is a fleece layer, and the second fabric layer is a cotton layer. That is, the fleece fabric of the present invention is a single-sided fleece fabric, and the opposite side of the fleece fabric is a cotton layer, thereby ensuring the skin-friendliness and comfort of the fleece fabric.

[0041] From both economic and comfort perspectives, the aforementioned single-sided fleece fabric comprises, by weight percentage, 20%–40% cotton layer, 50%–70% fleece layer, and 10%–20% connecting layer. It is understandable that this composition can be achieved by limiting the proportions of the raw materials during the manufacturing process. Of course, the specific composition of the prepared single-sided fleece fabric can also be determined through testing, for example, using the testing methods specified in FZ / T 01057.1-2007, FZ / T 01057.2-2007, FZ / T 01057.3-2007, FZ / T01057.4-2007, and GB / T 2910.11-2009.

[0042] It is understandable that since fleece fabric is mostly used in autumn and winter, its weight cannot be too low; otherwise, it would be too thin to meet the basic requirements for warmth and protection against the cold. Therefore, by further adjusting the above composition, the weight of the fleece fabric of this invention can be made to be 280-360 g / m². 2 Compared to commercially available fleece fabrics, the fleece fabric of this invention has a significantly lower weight per gram. Therefore, while meeting the basic requirements for warmth and cold protection, the fleece fabric of this invention, which has heat-retaining and insulating properties, is thinner, thus exhibiting lightweight and warm characteristics.

[0043] The present invention does not limit the specific material composition of the above-mentioned fleece layer and cotton layer, and can make different choices according to the specific application scenario of the fleece fabric.

[0044] For example, when the cotton layer of the fleece fabric includes 32-40S combed cotton, the cotton layer is smoother, finer, and more skin-friendly and softer; when the fleece layer includes 100D / 144F-155D / 144F double-yarn polyester fiber, the fleece layer is more compact, with a smooth, dense, full, and fluffy surface, capable of trapping more air and providing better warmth. Specifically, the polyester fiber is generally polyethylene terephthalate, which can be DTY or FDY type.

[0045] This invention does not limit the width of the fleece fabric; it can be designed according to the specific application scenario. For example, when fleece fabric is used for clothing production, its width can be 160cm.

[0046] A second aspect of the present invention provides a method for preparing any of the above-mentioned fleece fabrics, comprising the following steps:

[0047] 1) After the base fabric undergoes the first shaping treatment, the first shaped product is obtained;

[0048] 2) The first shaped product is subjected to a pre-treatment of granulation followed by a granulation treatment to obtain a granulated product;

[0049] 3) The fleece product is subjected to a second shaping treatment to obtain the fleece fabric;

[0050] The base fabric includes a connecting layer and a fabric layer precursor located on at least one side of the connecting layer;

[0051] The temperature of the first shaping treatment is 160-180℃, and the time is 15-30 minutes;

[0052] The second shaping treatment is carried out at a temperature of 160-180℃ for 15-30 minutes.

[0053] In step 1), the base fabric refers to the fabric comprising a connecting layer and a fleece precursor located on at least one side of the connecting layer. Here, "fleece precursor" refers to its existing form before becoming a fleece layer, for example, existing as a common fibrous layer (e.g., terry cloth).

[0054] In detail, for the aforementioned fleece fabric including a connecting layer, a first fabric layer and a second fabric layer, the base fabric includes a connecting layer and a first fabric layer precursor and a second fabric layer precursor located on both sides of the connecting layer, and at least one of the first fabric layer precursor and the second fabric layer precursor is a fleece precursor.

[0055] It is understandable that when the desired fabric is a fleece fabric in which both the first and second fabric layers are fleece layers, then both sides of the connecting layer are fleece precursors; when the desired fabric is a fleece fabric in which one of the first and second fabric layers is a fleece layer, for example, the first fabric layer is a fleece layer and the second fabric layer is a non-fleece layer, then the precursor of the first fabric layer is a fleece precursor, and the precursor of the second fabric layer can be a form existing before becoming the second fabric layer, or it can be the second fabric layer itself.

[0056] For example, when preparing a fleece fabric with a first fabric layer being a fleece layer and a second fabric layer being a cotton layer, the bottom includes a connecting layer, terry fibers (fleece precursor) located on one side of the connecting layer, and a cotton layer located on the other side.

[0057] This invention does not limit the preparation method of the base fabric; it can be prepared using methods commonly used in the art. In one specific embodiment, the base fabric is formed by weaving the connecting layer, loop fibers, and cotton layer. Further, before performing the first setting treatment on the base fabric, it can be dyed and dried sequentially to improve the aesthetics of the fleece fabric. Subsequently, after performing the first setting treatment on the base fabric, a first-set product is obtained.

[0058] In step 2), the objects of the pre-treatment and treatment are specifically the fleece precursor in the first shaped product, that is, the side that needs to become the fleece layer is subjected to pre-treatment and treatment. Specifically, the pre-treatment includes napping, shearing, and combing. It can be understood that after the treatment, the fleece precursor has become the fleece layer.

[0059] The present invention does not limit the specific operating parameters of the shaking pretreatment and shaking treatment, and can be the same as the parameters existing in the art.

[0060] Finally, the fleece product undergoes a second setting treatment to obtain fleece fabric. The temperature and time of the second setting treatment can be the same as or different from those of the first setting treatment.

[0061] By performing two shaping treatments at specific temperatures and for specific durations before and after step 2), this invention can further enhance the locking ability of the first and second fabric layers with the connecting layer, reduce the chance of shedding, and extend the service life of the fleece fabric.

[0062] A third aspect of the present invention also provides an garment, at least a portion of which is obtained by processing the fleece fabric of the first aspect or the fleece fabric prepared in the second aspect.

[0063] The processing includes at least cutting or sewing.

[0064] The clothing of this invention refers to items that can be worn or decorated, such as clothes, trousers, hats, socks, gloves, scarves, bags, etc.

[0065] In one specific implementation, the garment is a sweatshirt.

[0066] The present invention will now be described in detail through specific embodiments.

[0067] Example 1

[0068] The preparation method of this embodiment includes the following steps:

[0069] 1) The base fabric is subjected to the first shaping treatment at 170℃. After 20 minutes, the first shaped product is obtained.

[0070] The base fabric includes a connecting layer, a 155D / 144F double yarn DTY polyester filament on one side of the connecting layer, and a cotton layer of 40S combed cotton on the other side.

[0071] 2) The polyester fiber filaments of the first shaped product are sequentially subjected to napping, shearing, combing and granulation treatments to obtain the granulated product;

[0072] The speed of the brushing process is 18 m / min, the speed of the shearing process is 25 m / min, the speed of the combing process is 20 m / min, and the speed of the shaking process is 0.37 m / min.

[0073] 3) The fleece product was subjected to a second setting treatment at 170℃ for 20 minutes to obtain the fleece fabric of this embodiment. Testing revealed that the fleece fabric, by weight percentage, comprised 29.5% cotton layer, 54.5% fleece layer, and 16% binding layer, with a basis weight of 360 g / m². 2 The width is 160cm.

[0074] The connecting layer in step 1) is obtained by weaving connecting yarns. The connecting yarns consist of coffee carbon and polyethylene terephthalate-propylene terephthalate polymer, with the coffee carbon having a mass percentage of 5-8% and a fineness of 75D / 36F.

[0075] Example 2

[0076] The preparation method of this embodiment is basically the same as that of Example 1, except that:

[0077] In step 1), the parameters of the double-yarn DTY polyester fiber filament located on one side of the connecting layer are 120D / 144F.

[0078] Testing revealed that the fleece fabric in this embodiment comprises 31% cotton layer, 53% fleece layer, and 16% connecting layer by weight, with a weight of 320 g / m². 2 .

[0079] Example 3

[0080] The preparation method of this embodiment is basically the same as that of Example 1, except that:

[0081] In step 1), the parameters of the double-yarn DTY polyester fiber filament located on one side of the connecting layer are 100D / 144F, and the parameters of the connecting yarn in the connecting layer are 50D / 24F.

[0082] Testing revealed that the fleece fabric of this embodiment comprises 40% cotton layer, 44% fleece layer, and 16% binding layer by weight, with a weight of 280 g / m². 2 .

[0083] Comparative Example 1

[0084] The preparation method of this comparative example is basically the same as that of Example 1, except that the connecting filament in the connecting layer is 75D / 36F polyester fiber.

[0085] Test case

[0086] 1. Heat storage and warmth preservation

[0087] Using a 500W halogen lamp as the test condition, the fleece fabric of the example was irradiated for 60 minutes, and the thermal insulation rate was tested according to Method A of GB / T 11048-1989, the constant temperature difference heat dissipation method for thermal insulation performance of textiles. The results are shown in Table 1 below.

[0088] Table 1

[0089]

[0090] As shown in Table 1, the fleece fabric of the present invention has a better heating effect and a higher heating range.

[0091] 2. Far-infrared heating

[0092] The far-infrared properties of the fleece fabric in the examples were tested in accordance with GB / T 30127-2013 Textiles.

[0093] Specifically, the standard blackbody plate and the sample were placed sequentially on a hot plate, and the surface temperature of the hot plate was adjusted to reach the specified temperature. A far-infrared radiation measurement system with a spectral response range covering the 5μm~14μm band was used to measure the radiation intensity of the standard blackbody plate and the sample after they stabilized on the hot plate. The far-infrared emissivity of the sample was determined by calculating the ratio of the radiation intensity of the sample to that of the standard blackbody plate. The specific results are shown in Table 2.

[0094] After the far-infrared radiation source irradiates the sample with a constant irradiation intensity for a certain period of time, the temperature rise on the sample surface is measured.

[0095] Table 2

[0096]

[0097] As shown in Table 2, the fleece fabric of this embodiment has good far-infrared emission function.

[0098] 3. Tensile resilience

[0099] The fleece fabrics of the examples and comparative examples were tested according to FZ / T 70006-2004 Test Method for Tensile Elastic Recovery Rate of Knitted Fabrics, and the results are shown in Table 3.

[0100] The test conditions were as follows: constant force: 25N, pre-tension: 1N, repeated stretching 100 times, speed 700mm / min, return speed 700mm / min, stretching pause for 5s, and return pause for 5s.

[0101] Table 3

[0102]

[0103] As shown in Table 3, the fleece fabric of the present invention has good tensile recovery.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fleece fabric, characterized in that, It includes a connecting layer and a first fabric layer and a second fabric layer located on both sides of the connecting layer, wherein at least one of the first fabric layer and the second fabric layer is a fleece layer; The connecting layer is an aggregate layer including connecting wires, which include coffee carbon and polyethylene terephthalate-propylene terephthalate polymer, and the connecting wires have a 3D coiled structure. The coffee carbon content in the connecting wire is 5-10% by mass; The surface of the connecting wire has grooves.

2. The fleece fabric according to claim 1, characterized in that, The fineness of the connecting wire is 50D / 24F-150D / 72F.

3. The fleece fabric according to claim 1, characterized in that, The first fabric layer is a fleece layer, and the second fabric layer is a cotton layer.

4. The fleece fabric according to claim 3, characterized in that, The fleece fabric comprises, by weight percentage: 20%~40% cotton layer, 50%~70% fleece layer, and 10%~20% connecting layer.

5. The fleece fabric according to claim 4, characterized in that, The fleece fabric has a weight of 280-360 g / m². 2 .

6. The fleece fabric according to claim 4 or 5, characterized in that, The cotton layer comprises 32-40S combed cotton.

7. A method for preparing the fleece fabric according to any one of claims 1-6, characterized in that, Includes the following steps: 1) After the base fabric undergoes the first shaping treatment, the first shaped product is obtained; 2) The first shaped product is subjected to a pre-treatment of granulation followed by a granulation treatment to obtain a granulated product; 3) The fleece product is subjected to a second shaping treatment to obtain the fleece fabric; The base fabric includes a connecting layer and a fleece precursor located on at least one side of the connecting layer; The temperature of the first shaping treatment is 160-180℃, and the time is 15-30 minutes; The second shaping treatment is carried out at a temperature of 160-180℃ for 15-30 minutes.

8. A garment, characterized in that, At least a portion of the garments are obtained by processing the fleece fabric as described in any one of claims 1-6 or the fleece fabric prepared according to claim 7.

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