Polar fleece method of polar fleece fabric

Abstract

The invention relates to an anti-pilling method of a polar fleece fabric, in particular to the technical field of fabrics, and the anti-pilling method comprises the following steps: carrying out anti-pilling treatment on a sheared laminated fabric; the polar fleece treatment comprises steam hot air treatment and cold air treatment which are carried out in sequence; the steam and hot air treatment comprises steam treatment and hot air treatment which are alternately carried out; the steam hot air treatment is performed for at least six times. According to the anti-pilling method provided by the invention, the anti-pilling process is optimally designed, and the steam treatment, the hot air treatment and the cold air treatment which are alternated for multiple times are matched, so that the bartacking of the cloth in the anti-pilling process can be obviously reduced, and meanwhile, the anti-pilling method has a good anti-pilling effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric, in particular to a method for shaking granulated fabric. BACKGROUND

[0002] Shaking granulated fabric is a kind of knitted fabric, which is knitted in a small coin knitted structure on a circular knitting machine. After being knitted, the fabric is dyed first, and then subjected to a variety of complex finishing processes such as raising, carding, shearing and shaking. The front side of the fabric is raised, and the shaking granulated fabric is dense and fluffy. The back side is sparse and uniform, with short pile, clear texture and good elasticity.

[0003] For example, WO2019006963A1 discloses a method for producing shaking granulated fabric and double-sided fabric imitating super-soft fabric. The raw material of the front shaking granulated fabric layer is 150D / 144F polyester filament, the raw material of the middle base fabric layer is 100D / 36F polyester filament, and the raw material of the back imitating super-soft fabric layer is 75D / 144F FDY polyester semi-lustrous filament after steaming. The middle base fabric layer firmly connects the front and back sides together. The three materials cooperate with each other to make the pile on the front and back sides dense and full. The use of 75D / 144F FDY polyester semi-lustrous filament after steaming on the back side can make the imitating super-soft fabric soft, delicate, warm, smooth and high in gloss, and finally form the imitating super-soft effect under the light pressing process.

[0004] CN111321503A discloses a method for preparing shaking granulated fabric composite fabric and shaking granulated fabric composite fabric. The method comprises the steps of: warping, warping a plurality of yarns onto 2-3 warp beams, each warp beam containing at least 4000 yarns, the yarns being chemical fiber filaments, and the thickest yarn being 75D; weaving, weaving the warped yarns on a weaving machine through heddle and guide, wherein the weaving machine is corresponding to the warping machine, the weft yarns and the base weft yarns are interwoven and beaten to form a gray fabric, wherein the base weft yarns and the warp yarns form a ground fabric, and the weft yarns and the warp yarns are interwoven to form loops; cutting, cutting the gray fabric with a cutting device to separate the floating long lines of the weft yarns to form single short pile; and finishing, finishing the cut gray fabric to obtain the shaking granulated fabric composite fabric.

[0005] However, during the ring drying process, i.e. shaking granulation, it is inevitable to produce a knot phenomenon (more steam is needed for wet processing or more knots are prone to occur), which forms defects. Even if the knotted fabric is removed and processed again, the efficiency is reduced. SUMMARY

[0006] In view of the problems in the prior art, the present application aims to provide a method for shaking granulated fabric, so as to solve the defects of fabric knotting during the ring drying process, i.e. shaking granulation, resulting in defects in the fabric and low production efficiency.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] This invention provides a method for fleece fabric to be fleeced, the method comprising:

[0009] The sheared and layered fabric is then subjected to a pelletizing process.

[0010] The shaking process includes: sequential hot steam treatment and cold air treatment;

[0011] The steam hot air treatment includes alternating steam treatment and hot air treatment;

[0012] The steam hot air treatment is performed at least 6 times.

[0013] The pelletizing method provided by this invention, through optimized design of the pelletizing process, employs multiple alternating steam treatment, hot air treatment, and cold air treatment, which can significantly reduce fabric caking during pelletizing while achieving good pelletizing effect.

[0014] As a preferred technical solution of the present invention, the laminated fabric is fixed on any side of each layer of fabric along the lamination direction by a thread.

[0015] As a preferred embodiment of the present invention, the temperature of the steam used in the steam treatment is 100-110℃.

[0016] Preferably, the pressure of the steam used in the steam treatment is 0.02-0.04 MPa.

[0017] As a preferred embodiment of the present invention, the rotational speed in the steam treatment is 20-30 r / min.

[0018] As a preferred embodiment of the present invention, the temperature of the hot air treatment is 90-110℃.

[0019] Preferably, the pressure of the hot air treatment is 0.03-0.05 MPa.

[0020] Preferably, the rotation speed of the hot air treatment is 20-30 r / min.

[0021] As a preferred embodiment of the present invention, the steam treatment time is 4-6 minutes.

[0022] Preferably, the hot air treatment time is 4-6 minutes.

[0023] As a preferred embodiment of the present invention, the temperature of the cold air treatment is 30-50℃.

[0024] Preferably, the pressure of the cold air treatment is 0.1-0.11 MPa.

[0025] As a preferred embodiment of the present invention, the rotation speed of the cold air treatment is 20-30 r / min.

[0026] As a preferred embodiment of the present invention, the cold air treatment time is 8-15 minutes.

[0027] As a preferred embodiment of the present invention, the alternation time between forward and reverse rotation in the shaking process is <30s.

[0028] Compared with existing technical solutions, the present invention has the following beneficial effects:

[0029] (1) The granulation method provided by the present invention optimizes the granulation process by using multiple alternating steam treatment, hot air treatment and cold air treatment, which can significantly reduce the clogging of the fabric during the granulation process and has a good granulation effect.

[0030] (2) The granulation method provided by the present invention, by optimizing the design of the granulation process parameters, can ensure that the finished fabric still has good performance, with anti-snagging performance ≥5 and anti-pilling performance ≥5, while ensuring that no knots occur.

[0031] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims. Detailed Implementation

[0032] To better illustrate the present invention and facilitate understanding of its technical solutions, typical but non-limiting embodiments of the present invention are as follows:

[0033] Fleece is a type of knitted fabric with a small rib knit structure, woven on a large circular knitting machine. After weaving, the greige fabric is first dyed, and then subjected to a variety of complex finishing processes such as napping, combing, shearing, and fleece spinning. The front of the fabric is napped, resulting in a fluffy and dense fleece, while the reverse side has a sparse and even nap with short and few fibers, resulting in a clear texture and excellent fluffiness and elasticity. Currently, during the ring drying (i.e., fleece spinning) process, tucking inevitably occurs (more likely when the fabric is wet or when a large amount of steam is sprayed), forming defects. Even if the tucking is straightened midway through processing, it will slightly improve the situation, but it will still reduce efficiency. Therefore, this invention optimizes the ring drying process to avoid tucking during ring drying (i.e., fleece spinning), thereby improving the fabric manufacturing efficiency, as detailed below:

[0034] I. This embodiment provides a method for fleece fabric to be rolled, the method comprising:

[0035] The sheared and layered fabric is then subjected to a pelletizing process.

[0036] The shaking process includes sequential hot steam treatment and cold air treatment.

[0037] In this invention, the fabric can be selected as: Fabric ①: 150D / 144F (75D / 72F / 2) polyester low elastic yarn (wool) + 75D / 72F heavy mesh double yarn (base yarn) single-sided fleece [100% Polyester]; Fabric ②: 32S / 1 biodegradable polyester 80% / Tencel 20% Siro compact spun (wool) + 50D / 24F recycled (BIO) biodegradable semi-dull polyester DTY (ground yarn) double-sided fleece [71% Bio Polyester, 18% Tencel, 11% Recycled Bio Polyester]. The specific fabric can be selected according to actual needs to prepare fleece.

[0038] In this invention, the shaking process is carried out using shaking equipment commonly used in the art, but it needs to meet the relevant process defined in this invention.

[0039] In this case, the laminated fabric is fixed on any side of each layer of fabric along the lamination direction using a thread.

[0040] The steam hot air treatment includes alternating steam treatment and hot air treatment.

[0041] The temperature of the steam used in the steam treatment is 100-110℃, for example, it can be 100℃, 101℃, 102℃, 103℃, 104℃, 105℃, 106℃, 107℃, 108℃, 109℃ or 110℃, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0042] The pressure of the steam used in the steam treatment is 0.02-0.04 MPa, for example, it can be 0.02 MPa, 0.022 MPa, 0.024 MPa, 0.026 MPa, 0.028 MPa, 0.03 MPa, 0.032 MPa, 0.034 MPa, 0.036 MPa, 0.038 MPa or 0.04 MPa, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0043] The rotational speed in the steam treatment is 20-30 r / min, for example, it can be 20 r / min, 21 r / min, 22 r / min, 23 r / min, 24 r / min, 25 r / min, 26 r / min, 27 r / min, 28 r / min, 29 r / min or 30 r / min, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0044] The temperature of the hot air treatment is 90-110℃, for example, it can be 90℃, 92℃, 94℃, 96℃, 98℃, 100℃, 102℃, 104℃, 106℃, 108℃ or 110℃, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0045] The pressure of the hot air treatment is 0.03-0.05 MPa, for example, it can be 0.03 MPa, 0.032 MPa, 0.034 MPa, 0.036 MPa, 0.038 MPa, 0.04 MPa, 0.042 MPa, 0.044 MPa, 0.046 MPa, 0.048 MPa or 0.05 MPa, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0046] The rotation speed of the hot air treatment is 20-30 r / min, for example, it can be 20 r / min, 21 r / min, 22 r / min, 23 r / min, 24 r / min, 25 r / min, 26 r / min, 27 r / min, 28 r / min, 29 r / min or 30 r / min, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0047] The steam treatment time is 4-6 minutes, for example, it can be 4 minutes, 4.2 minutes, 4.4 minutes, 4.6 minutes, 4.8 minutes, 5 minutes, 5.2 minutes, 5.4 minutes, 5.6 minutes, 5.8 minutes or 6 minutes, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0048] The hot air treatment time is 4-6 minutes, for example, it can be 4 minutes, 4.2 minutes, 4.4 minutes, 4.6 minutes, 4.8 minutes, 5 minutes, 5.2 minutes, 5.4 minutes, 5.6 minutes, 5.8 minutes or 6 minutes, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0049] The steam hot air treatment is performed at least 6 times.

[0050] The temperature of the cold air treatment is 30-50℃, for example, it can be 30℃, 32℃, 34℃, 36℃, 38℃, 40℃, 42℃, 44℃, 46℃, 48℃ or 50℃, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0051] The pressure of the cold air treatment is 0.1-0.11 MPa, for example, it can be 0.1 MPa, 0.101 MPa, 0.102 MPa, 0.103 MPa, 0.104 MPa, 0.105 MPa, 0.106 MPa, 0.107 MPa, 0.108 MPa, 0.109 MPa or 0.11 MPa, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0052] The rotation speed of the cold air treatment is 20-30 r / min, for example, it can be 20 r / min, 21 r / min, 22 r / min, 23 r / min, 24 r / min, 25 r / min, 26 r / min, 27 r / min, 28 r / min, 29 r / min or 30 r / min, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0053] The cold air treatment time is 8-15 minutes, for example, it can be 8 minutes, 8.7 minutes, 9.4 minutes, 10.1 minutes, 10.8 minutes, 11.5 minutes, 12.2 minutes, 12.9 minutes, 13.6 minutes, 14.3 minutes or 15 minutes, but is not limited to the listed values. Other unlisted values ​​within this range are also acceptable.

[0054] The alternation time between forward and reverse rotation in the shaking process is less than 30s, for example, it can be 28s, 26s, 24s, 22s, 20s, 18s, 16s, 14s, 12s or 10s, but is not limited to the listed values. Other unlisted values ​​within this range also meet the requirements.

[0055] II. To illustrate the effects achievable by the fleece fabric reeling method provided by this invention, the following practical example is used for explanation:

[0056] Example 1

[0057] This embodiment provides a method for fleece fabric to be fleeced, the method comprising:

[0058] The sheared layered fabric (outer fabric: 150D / 144F(75D / 72F / 2) polyester low elastic yarn (wool) + 75D / 72F heavy mesh double yarn (base yarn) single-sided fleece [100% Polyester]) is then subjected to a fleece treatment.

[0059] The grain shaking process includes: sequential hot steam treatment and cold air treatment; the alternation time between forward and reverse rotation in the grain shaking process is 20 seconds;

[0060] The laminated fabric is fixed with a thread on any side of each layer of fabric along the lamination direction;

[0061] The steam-hot-air treatment includes alternating steam treatment and hot-air treatment; the temperature of the steam used in the steam treatment is 105°C; the pressure of the steam used in the steam treatment is 0.03 MPa; the rotation speed in the steam treatment is 25 r / min; the temperature of the hot-air treatment is 100°C; the pressure of the hot-air treatment is 0.04 MPa; the rotation speed of the hot-air treatment is 25 r / min; the steam treatment time is 5 min; the hot-air treatment time is 5 min; and the steam-hot-air treatment is performed 6 times.

[0062] The temperature of the cold air treatment is 40℃; the pressure of the cold air treatment is 0.105MPa; the rotation speed of the cold air treatment is 25r / min; and the time of the cold air treatment is 10min.

[0063] Example 2

[0064] This embodiment provides a method for fleece fabric to be fleeced, the method comprising:

[0065] The sheared layered fabric (outer fabric: 150D / 144F(75D / 72F / 2) polyester low elastic yarn (wool) + 75D / 72F heavy mesh double yarn (base yarn) single-sided fleece [100% Polyester]) is then subjected to a fleece treatment.

[0066] The grain shaking process includes: sequential hot steam treatment and cold air treatment; the alternation time between forward and reverse rotation in the grain shaking process is 10 seconds;

[0067] The laminated fabric is fixed with a thread on any side of each layer of fabric along the lamination direction;

[0068] The steam-hot-air treatment includes alternating steam treatment and hot-air treatment; the temperature of the steam used in the steam treatment is 108°C; the pressure of the steam used in the steam treatment is 0.035 MPa; the rotation speed in the steam treatment is 22 r / min; the temperature of the hot-air treatment is 105°C; the pressure of the hot-air treatment is 0.045 MPa; the rotation speed of the hot-air treatment is 22 r / min; the steam treatment time is 5 min; the hot-air treatment time is 5 min; and the steam-hot-air treatment is performed 7 times.

[0069] The temperature of the cold air treatment is 45℃; the pressure of the cold air treatment is 0.106MPa; the rotation speed of the cold air treatment is 22r / min; and the time of the cold air treatment is 12min.

[0070] Example 3

[0071] This embodiment provides a method for fleece fabric to be fleeced, the method comprising:

[0072] The sheared layered fabric (fabric: 32S / 1 biodegradable polyester 80% / Tencel 20% Siro compact spun (wool) + 50D / 24F recycled (BIO) biodegradable semi-dull polyester DTY (ground yarn) double-sided fleece [71% Bio Polyester, 18% Tencel, 11% Recycled Bio Polyester]) is then subjected to a fleece treatment.

[0073] The grain shaking process includes: sequential hot steam treatment and cold air treatment; the alternation time between forward and reverse rotation in the grain shaking process is 25 seconds;

[0074] The laminated fabric is fixed with a thread on any side of each layer of fabric along the lamination direction;

[0075] The steam-hot-air treatment includes alternating steam treatment and hot-air treatment; the temperature of the steam used in the steam treatment is 110°C; the pressure of the steam used in the steam treatment is 0.04 MPa; the rotation speed in the steam treatment is 20 r / min; the temperature of the hot-air treatment is 110°C; the pressure of the hot-air treatment is 0.05 MPa; the rotation speed of the hot-air treatment is 30 r / min; the steam treatment time is 6 min; the hot-air treatment time is 4 min; and the steam-hot-air treatment is performed 8 times.

[0076] The temperature of the cold air treatment is 50℃; the pressure of the cold air treatment is 0.1MPa; the rotation speed of the cold air treatment is 30r / min; and the time of the cold air treatment is 8min.

[0077] Example 4

[0078] This embodiment provides a method for fleece fabric to be fleeced, the method comprising:

[0079] The sheared layered fabric (fabric: 32S / 1 biodegradable polyester 80% / Tencel 20% Siro compact spun (wool) + 50D / 24F recycled (BIO) biodegradable semi-dull polyester DTY (ground yarn) double-sided fleece [71% Bio Polyester, 18% Tencel, 11% Recycled Bio Polyester]) is then subjected to a fleece treatment.

[0080] The grain shaking process includes: sequential hot steam treatment and cold air treatment; the alternation time between forward and reverse rotation in the grain shaking process is 15 seconds;

[0081] The laminated fabric is fixed with a thread on any side of each layer of fabric along the lamination direction;

[0082] The steam-hot-air treatment includes alternating steam treatment and hot-air treatment; the temperature of the steam used in the steam treatment is 100°C; the pressure of the steam used in the steam treatment is 0.02 MPa; the rotation speed in the steam treatment is 30 r / min; the temperature of the hot-air treatment is 90°C; the pressure of the hot-air treatment is 0.03 MPa; the rotation speed of the hot-air treatment is 20 r / min; the steam treatment time is 4 min; the hot-air treatment time is 6 min; and the steam-hot-air treatment is performed 8 times.

[0083] The temperature of the cold air treatment is 30°C; the pressure of the cold air treatment is 0.11 MPa; the rotation speed of the cold air treatment is 20 r / min; and the time of the cold air treatment is 15 min.

[0084] Example 5

[0085] The only difference from Example 1 is that no thread is used to fix any side of the layered fabric along the stacking direction.

[0086] Example 6

[0087] The only difference from Example 1 is that the temperature of the steam used in the steam treatment is 90°C.

[0088] Example 7

[0089] The only difference from Example 1 is that the temperature of the steam used in the steam treatment is 120°C.

[0090] Example 8

[0091] The only difference from Example 1 is that the pressure of the steam used in the steam treatment is 0.01 MPa.

[0092] Example 9

[0093] The only difference from Example 1 is that the pressure of the steam used in the steam treatment is 0.05 MPa.

[0094] Example 10

[0095] The only difference from Example 1 is that the hot air treatment temperature is 80°C.

[0096] Example 11

[0097] The only difference from Example 1 is that the hot air treatment temperature is 120°C.

[0098] Example 12

[0099] The only difference from Example 1 is that the pressure of the hot air treatment is 0.01 MPa.

[0100] Example 13

[0101] The only difference from Example 1 is that the pressure of the hot air treatment is 0.07 MPa.

[0102] Example 14

[0103] The only difference from Example 1 is that the alternation time between forward and reverse rotation in the shaking process is 40 seconds.

[0104] Comparative Example 1

[0105] The only difference from Example 1 is that steam treatment and hot air treatment are carried out simultaneously.

[0106] Comparative Example 2

[0107] The only difference from Example 1 is that the steam hot air treatment is performed 4 times.

[0108] The fabrics obtained in the above examples and comparative examples were observed for any knots. Simultaneously, the fabrics were stretched and shaped (the process parameters were controlled identically in each example) to obtain finished fabrics. Performance tests were then conducted on the finished fabrics. The snag performance was tested according to GB / T 11047-2008 standard, graded from 1 to 5, with 1 being the worst and 5 the best. Anti-pilling performance was tested according to GB / T 4802.2-2008 standard, graded from 1 to 5, with 1 being the worst and 5 the best. Detailed results are shown in Table 1 below.

[0109] Table 1

[0110]

[0111] As shown in Table 1, the pelletizing method provided by the present invention, through optimized design of the pelletizing process and the combination of multiple alternating steam treatment, hot air treatment and cold air treatment, can significantly reduce fabric caking during the pelletizing process, while also achieving good pelletizing effect.

[0112] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0113] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0114] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A method for fleece fabric to be rolled, characterized in that, The shaking method includes: The sheared and layered fabric is then subjected to a pelletizing process. The shaking process includes: sequential hot steam treatment and cold air treatment; The steam hot air treatment includes alternating steam treatment and hot air treatment; The steam hot air treatment is performed at least 6 times.

2. The shaking method as described in claim 1, characterized in that, The laminated fabric is fixed on any side of each layer along the lamination direction using a thread.

3. The shaking method as described in claim 1, characterized in that, The temperature of the steam used in the steam treatment is 100-110℃; Preferably, the pressure of the steam used in the steam treatment is 0.02-0.04 MPa.

4. The shaking method as described in claim 1, characterized in that, The rotational speed during the steam treatment is 20-30 r / min.

5. The shaking method as described in claim 1, characterized in that, The temperature of the hot air treatment is 90-110℃; Preferably, the pressure of the hot air treatment is 0.03-0.05 MPa; Preferably, the rotation speed of the hot air treatment is 20-30 r / min.

6. The shaking method as described in claim 1, characterized in that, The steam treatment time is 4-6 minutes; Preferably, the hot air treatment time is 4-6 minutes.

7. The shaking method as described in claim 1, characterized in that, The temperature of the cold air treatment is 30-50℃; Preferably, the pressure of the cold air treatment is 0.1-0.11 MPa.

8. The shaking method as described in claim 1, characterized in that, The rotation speed of the cold air treatment is 20-30 r / min.

9. The shaking method as described in claim 1, characterized in that, The cold air treatment time is 8-15 minutes.

10. The shaking method as described in claim 1, characterized in that, The alternation time between forward and reverse rotation in the aforementioned shaking process is <30s.

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