Durable antibacterial and deodorant down jacket fabric and preparation method thereof

Abstract

The invention relates to a durable antibacterial and deodorant down jacket fabric and a preparation method thereof. The fabric comprises an inner layer, an antibacterial layer and an outer layer which are connected in sequence, the antibacterial layer comprises a first supporting layer arranged on the face, close to the outer layer, of the inner layer and a second supporting layer arranged on the face, close to the inner layer, of the outer layer, hot-pressing convex parts and hot-pressing concave parts are alternately arranged on the first supporting layer and the second supporting layer, and the concave parts on the first supporting layer and the second supporting layer are symmetrically arranged and form containing cavities. An antibacterial supporting piece is arranged in the containing cavity. The first supporting layer and the second supporting layer are connected through the bending part of the antibacterial supporting piece, the structural stability of the antibacterial supporting piece is improved, the two sides of the bending part are wound to form the winding part, the antibacterial and deodorant coating layer is stacked after winding, antibacterial components and deodorant components can be emitted more enduringly, and the antibacterial and deodorant effects are improved. The fabric can still keep good bacteriostatic and antibacterial effects, anti-tearing effects and down-proof effects after being washed for multiple times.

Description

Technical Field

[0001] The invention belongs to the technical field of clothing fabrics, and in particular relates to a durable antibacterial and deodorizing down jacket fabric and a preparation method thereof. Background Art

[0002] The preparation methods of antibacterial and deodorizing down jacket fabrics are generally coating method and dipping method. Among them, the coating method is a method of directly coating a layer of coating containing antibacterial and deodorizing ingredients on the surface of the fabric to give the fabric antibacterial and deodorizing functions. However, its defect is that the coating coated on the surface of the fabric will fall off, drop off, evaporate quickly, etc. after repeated use and washing, which makes the antibacterial and deodorizing effect of the fabric less durable.

[0003] In addition, as an important garment for keeping warm in winter, down jackets need to be worn and washed frequently. In order to ensure the durability and warmth of down jackets, down jacket fabrics also need to have strong tear resistance and anti-down drilling properties to ensure that the down jacket fabrics can still maintain good tear resistance after multiple washings. The requirement for anti-down drilling performance is to avoid or reduce the occurrence of down running. To this end, we provide a down jacket fabric with tear resistance, anti-down drilling performance, and a durable antibacterial and deodorizing property, and a preparation method thereof. Summary of the invention

[0004] The purpose of the present invention is to provide a durable antibacterial and deodorizing down jacket fabric and a preparation method thereof in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A durable antibacterial and deodorizing down jacket fabric, comprising an inner layer, an antibacterial layer, and an outer layer connected in sequence;

[0007] The antibacterial layer comprises a support layer 1 arranged on one side of the inner layer close to the outer layer, and a support layer 2 arranged on one side of the outer layer close to the inner layer, the support layer 1 and the support layer 2 are both provided with hot-pressed convex parts and concave parts alternately, the hot-pressed convex parts on the support layer 1 and the support layer 2 are symmetrically arranged and fixed together by hot pressing, the concave parts on the support layer 1 and the support layer 2 are symmetrically arranged and form a receiving cavity, and an antibacterial support member is provided inside the receiving cavity;

[0008] The antibacterial support member comprises a bending portion and winding portions located on both sides of the bending portion, and the upper and lower end surfaces of the bending portion are respectively fixed to the inner layer and the outer layer by hot pressing;

[0009] The bending portion and the winding portion both include a base layer and an antibacterial and deodorizing coating formed by coating the upper and lower surfaces of the base layer.

[0010] As a further optimization solution of the present invention, the two winding parts are arranged in a diagonal manner, and two pressing strips for pressing the winding parts are arranged in a diagonal manner on the inner side surface of the accommodating cavity.

[0011] As a further optimization solution of the present invention, the side surface where the bending portion is connected to the winding portion is fixed together with the pressing strip by heat pressing.

[0012] As a further optimization solution of the present invention, the support layer 1, the support layer 2, the pressure strip, the bending portion, and the winding portion are all made of polyamide material or polypropylene material.

[0013] A method for preparing a durable antibacterial and deodorizing down jacket fabric comprises the following steps:

[0014] Step 1: Extruding a support layer 1 and a support layer 2 on the inner layer and the antibacterial layer through an extrusion die, and extruding a straight base layer through the extrusion die;

[0015] Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying; performing a hot pressing treatment on the middle part of the base layer with the antibacterial and deodorizing coating by a hot pressing device to form a bending part; and under heating conditions, respectively winding the two sides of the base layer with the antibacterial and deodorizing coating toward the bending part to form a winding part, thereby preparing an antibacterial support member;

[0016] Step 3: stacking the inner layer and the antibacterial layer, placing the hot-pressed convex parts and concave parts of the support layer 1 and the support layer 2 corresponding to each other, and performing hot-pressing treatment on the inner layer, the antibacterial layer, and the hot-pressed convex parts of the support layer 1 and the support layer 2, and forming a receiving cavity between the concave parts of the support layer 1 and the support layer 2 after hot-pressing and fixing treatment;

[0017] Step 4: Place the antibacterial support member prepared in step 2 into the accommodating cavity prepared in step 3, and fix the antibacterial support member with support layer 1 and support layer 2 by hot pressing to obtain a durable antibacterial and deodorizing down jacket fabric.

[0018] As a further optimization scheme of the present invention, in step one, a pressure strip is extruded on the inner layer and the antibacterial layer through an extrusion die; in step four, the antibacterial support member is fixed to the pressure strip by heat pressing.

[0019] As a further optimization scheme of the present invention, in step 2, the hot pressing temperature is 120-130°C, the hot pressing pressure is 1-3MPa, the number of hot pressing times is 1-3 times, and the hot pressing time each time is 2-4min; the heating temperature when winding the base layer is 85-95°C.

[0020] As a further optimization scheme of the present invention, in step three, the temperature of the hot pressing fixation treatment is 135-150°C, the hot pressing pressure is 5-7MPa, the number of hot pressing times is 5-7 times, and the hot pressing time for each time is 3-5min.

[0021] As a further optimization scheme of the present invention, in step 4, the temperature of the hot pressing fixation treatment is 130-140°C, the hot pressing pressure is 3-5MPa, the number of hot pressing times is 2-4 times, and the hot pressing time for each time is 2-5min.

[0022] The beneficial effects of the present invention are:

[0023] 1) The present invention provides an antibacterial layer between the inner layer and the outer layer, so that the antibacterial property of the fabric is maintained for a longer period of time, and the tear resistance and anti-down drilling properties of the fabric are improved, so that the fabric is durable and can still maintain good antibacterial, antibacterial, tear resistance and anti-down drilling effects after multiple washings;

[0024] 2) The present invention forms a receiving cavity between the recessed parts of the support layer 1 and the support layer 2 by arranging the hot-pressed convex parts and the recessed parts of the support layer 1 and the support layer 2 corresponding to each other and hot-pressing the inner layer, the outer layer, the support layer 1 and the support layer 2 along the hot-pressed convex parts of the support layer 1 and the support layer 2, and an antibacterial support member is also arranged inside the receiving cavity, and the support layer 1 and the support layer 2 are connected by the bending part of the antibacterial support member to increase the structural stability of the antibacterial support member, and the two sides of the bending part are wound to form a winding part, and the antibacterial and deodorizing coating layers are stacked after winding, which can emit antibacterial components and deodorizing components more persistently;

[0025] 3) The present invention further increases the structural stability of the antibacterial support component by diagonally arranging two pressing strips for pressing the winding part on the inner side surface of the accommodating cavity, thereby making the antibacterial property of the fabric more durable and also improving the tear resistance and anti-down performance of the fabric.

[0026] 4) The present invention improves the structural stability of the antibacterial support member by hot pressing the side surface connecting the bending portion and the winding portion to the pressure strip, thereby further increasing the structural stability of the antibacterial support member, thereby making the antibacterial properties of the fabric more durable and also improving the tear resistance and anti-down performance of the fabric.

[0027] 5) The present invention improves the preparation method by winding under heating conditions to form a winding portion, thereby improving the durability of the antibacterial support member in the winding state, so that the support layer 2 is not easy to loosen after multiple washings, making the antibacterial performance of the fabric more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic diagram of the cross section of the durable antibacterial and deodorizing down jacket fabric of Example 1 of the present invention

[0029] Figure 2 It is a schematic cross-sectional view of the durable antibacterial and deodorizing down jacket fabrics of Examples 2 and 3 of the present invention.

[0030] Figure 3 The present invention Figure 2 Schematic diagram of part of the structure.

[0031] Figure 4 Schematic diagram of the antibacterial support member of the present invention.

[0032] Figure 5 It is a partial structural schematic diagram of the antibacterial support member of the present invention.

[0033] Figure 6 It is a schematic structural diagram of the winding portion of the antibacterial support member of the present invention in an unwound state.

[0034] In the figure: 1, inner layer; 2, antibacterial layer; 3, outer layer; 21, support layer 1; 22, support layer 2; 23, pressure strip; 24, accommodating cavity; 25, antibacterial support member; 251, bending portion; 252, winding portion. DETAILED DESCRIPTION

[0035] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0036] 1. Materials

[0037] 1. In the present application, the inner layer 1 is a commercially available pure cotton fabric, and the outer layer 3 is a commercially available 260T polyester pongee fabric.

[0038] 2. The antibacterial agent in this application is a silver ion antibacterial agent, SIA-Y120 silver ion antibacterial agent purchased from Wujiang Jincheng Fine Chemical Co., Ltd.; the aromatic finishing agent in this application is JINC-220 aromatic finishing agent purchased from Wujiang Jincheng Fine Chemical Co., Ltd.

[0039] Unless otherwise specified, the methods used in this example are all known to those skilled in the art, and the reagents and other materials used are all commercially available products unless otherwise specified.

[0040] 2. Methods

[0041] In order to explore the effects of different structural designs of the antibacterial layer 2 on the antibacterial properties, tear resistance and down-proof properties of the durable antibacterial and deodorizing down jacket fabric, the following technical solutions of Examples 1-3 and Comparative Examples 1-2 were designed, as shown below:

[0042] Example 1

[0043] like Figure 1 As shown, a durable antibacterial and deodorizing down jacket fabric comprises an inner layer 1, an antibacterial layer 2, and an outer layer 3 connected in sequence;

[0044] The antibacterial layer 2 includes a support layer 1 21 disposed on one side of the inner layer 1 close to the outer layer 3, and a support layer 2 22 disposed on one side of the outer layer 3 close to the inner layer 1, the support layer 1 21 and the support layer 2 22 are both alternately provided with hot-pressed convex parts and concave parts, the hot-pressed convex parts on the support layer 1 21 and the support layer 2 22 are symmetrically arranged and fixed together by hot pressing, the concave parts on the support layer 1 21 and the support layer 2 22 are symmetrically arranged and form a receiving cavity 24, and an antibacterial support member 25 is provided inside the receiving cavity 24;

[0045] The antibacterial support member 25 includes a bending portion 251 and winding portions 252 located on both sides of the bending portion 251. The upper and lower end surfaces of the bending portion 251 are hot-pressed and fixed to the inner layer 1 and the outer layer 3 respectively.

[0046] The bending portion 251 and the winding portion 252 both include a base layer and an antibacterial and deodorizing coating formed by coating the upper and lower surfaces of the base layer.

[0047] The supporting layer 1 21 , the supporting layer 2 22 , the bending portion 251 , and the winding portion 252 are all made of polyamide material or polypropylene material.

[0048] A method for preparing a durable antibacterial and deodorizing down jacket fabric comprises the following steps:

[0049] Step 1: Extruding a support layer 1 21 and a support layer 2 2 on the inner layer 1 and the antibacterial layer 2 through an extrusion die, and extruding a straight base layer through the extrusion die;

[0050] Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying; performing a hot pressing treatment on the middle part of the base layer with the antibacterial and deodorizing coating by a hot pressing device to form a bending portion 251; under heating conditions, winding the two sides of the base layer with the antibacterial and deodorizing coating toward the bending portion 251 to form a winding portion 252, thereby obtaining an antibacterial support member 25;

[0051] It should be noted that in step 2, the hot pressing temperature is 126±2°C, the hot pressing pressure is 2MPa, the number of hot pressing is 2 times, and the hot pressing time for each time is 3 minutes; when winding the base layer, it needs to be carried out under heating conditions, and the heating temperature is 90±3°C;

[0052] Step 3: stack the inner layer 1 and the antibacterial layer 2, so that the hot-pressed convex parts and concave parts of the support layer 1 21 and the support layer 2 22 are placed corresponding to each other, and perform hot-pressing treatment on the inner layer 1, the antibacterial layer 2, and the hot-pressed convex parts of the support layer 1 21 and the support layer 2 22, and form a receiving cavity 24 between the concave parts of the support layer 1 21 and the support layer 2 22 after hot-pressing and fixing treatment;

[0053] It should be noted that in step 3, the temperature of the hot pressing fixation treatment is 142±3°C, the hot pressing pressure is 6MPa, the number of hot pressing times is 5 times, and the hot pressing time for each time is 4min;

[0054] Step 4: Place the antibacterial support member 25 prepared in step 2 into the accommodating cavity 24 prepared in step 3, and fix the upper and lower ends of the bent portion 251 with the support layer 1 21 and the support layer 2 22 by hot pressing to obtain a durable antibacterial and deodorizing down jacket fabric;

[0055] It should be noted that in step 4, the temperature of the hot pressing fixation treatment is 135±2°C, the hot pressing pressure is 3 MPa, the number of hot pressing times is 3 times, and the hot pressing time for each time is 4 minutes.

[0056] Example 2

[0057] like Figure 2-5 As shown, a durable antibacterial and deodorizing down jacket fabric is provided. Based on Example 1, the improvement of this example lies in that the two winding parts 252 are arranged in a diagonal manner, and two pressing strips 23 for pressing the winding parts 252 are arranged in a diagonal manner on the inner side surface of the accommodating cavity 24.

[0058] A method for preparing a durable antibacterial and deodorizing down jacket fabric comprises the following steps:

[0059] Step 1: Extruding a support layer 1 21, a support layer 2 2, and a pressing strip 23 on the inner layer 1 and the antibacterial layer 2 through an extrusion die, and extruding a straight base layer through the extrusion die;

[0060] Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying; performing a hot pressing treatment on the middle part of the base layer with the antibacterial and deodorizing coating by a hot pressing device to form a bending portion 251; under heating conditions, winding the two sides of the base layer with the antibacterial and deodorizing coating toward the bending portion 251 to form a winding portion 252, thereby obtaining an antibacterial support member 25;

[0061] Step 3: stack the inner layer 1 and the antibacterial layer 2, so that the hot-pressed convex parts and concave parts of the support layer 1 21 and the support layer 2 22 are placed corresponding to each other, and perform hot-pressing treatment on the inner layer 1, the antibacterial layer 2, and the hot-pressed convex parts of the support layer 1 21 and the support layer 2 22, and form a receiving cavity 24 between the concave parts of the support layer 1 21 and the support layer 2 22 after hot-pressing and fixing treatment;

[0062] Step 4: Place the antibacterial support member 25 prepared in step 2 into the accommodating cavity 24 prepared in step 3, press the winding portion 252 against the support layer 1 21 or the support layer 2 22 through the pressing strip 23, and fix the upper and lower end portions of the bent portion 251 to the support layer 1 21 and the support layer 2 22 by hot pressing to obtain a durable antibacterial and deodorizing down jacket fabric.

[0063] It should be noted that, in this embodiment, the hot pressing treatment conditions of step 2, the heating temperature when winding the base layer, and the hot pressing fixing treatment conditions of steps 3 and 4 are all consistent with those of embodiment 1.

[0064] Example 3

[0065] like Figure 2-5 As shown, a durable antibacterial and deodorizing down jacket fabric is provided. Based on Example 2, the improvement of this example is that the side surface where the bending portion 251 and the winding portion 252 are connected is fixed together with the pressing strip 23 by heat pressing.

[0066] A method for preparing a durable antibacterial and deodorizing down jacket fabric comprises the following steps:

[0067] Step 1: Extruding a support layer 1 21, a support layer 2 2, and a pressing strip 23 on the inner layer 1 and the antibacterial layer 2 through an extrusion die, and extruding a straight base layer through the extrusion die;

[0068] Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying; performing a hot pressing treatment on the middle part of the base layer with the antibacterial and deodorizing coating by a hot pressing device to form a bending portion 251; under heating conditions, winding the two sides of the base layer with the antibacterial and deodorizing coating toward the bending portion 251 to form a winding portion 252, thereby obtaining an antibacterial support member 25;

[0069] Step 3: stack the inner layer 1 and the antibacterial layer 2, so that the hot-pressed convex parts and concave parts of the support layer 1 21 and the support layer 2 22 are placed corresponding to each other, and perform hot-pressing treatment on the inner layer 1, the antibacterial layer 2, and the hot-pressed convex parts of the support layer 1 21 and the support layer 2 22, and form a receiving cavity 24 between the concave parts of the support layer 1 21 and the support layer 2 22 after hot-pressing and fixing treatment;

[0070] Step 4: Place the antibacterial support member 25 prepared in step 2 into the accommodating cavity 24 prepared in step 3, press the winding portion 252 against the support layer 1 21 or the support layer 2 22 through the pressing strip 23, and hot-press and fix the upper and lower ends of the bent portion 251 to the support layer 1 21 and the support layer 2 22. Hot-press and fix the side surface where the bent portion 251 and the winding portion 252 are connected to the pressing strip 23 to obtain a durable antibacterial and deodorizing down jacket fabric.

[0071] It should be noted that, in this embodiment, the hot pressing treatment conditions of step 2, the heating temperature when winding the base layer, and the hot pressing fixing treatment conditions of steps 3 and 4 are all consistent with those of embodiment 1-2.

[0072] Comparative Example 1

[0073] In this comparative example, the difference from Example 3 lies in that step two of the method for preparing a durable antibacterial and deodorant down jacket fabric is as follows: antibacterial agent and aromatic finishing agent are coated on the upper and lower surfaces of the base layer prepared in step one, and an antibacterial and deodorant coating is obtained after drying; the middle part of the base layer with the antibacterial and deodorant coating is subjected to hot pressing treatment by a hot pressing device to form a bending portion 251; at room temperature (22±3°C), both sides of the base layer with the antibacterial and deodorant coating are respectively wound toward the bending portion 251 to form a winding portion 252, thereby preparing an antibacterial support member 25.

[0074] The rest are consistent with Example 3.

[0075] It should be noted that in this comparative example, the winding portion 252 formed by winding at room temperature is less stable than the winding portion 252 formed by winding under heating conditions (Examples 1-3), and is prone to loosening after multiple subsequent washings.

[0076] Comparative Example 2

[0077] A durable antibacterial and deodorizing down jacket fabric, comprising an inner layer 1, an antibacterial layer 2, and an outer layer 3 connected in sequence;

[0078] The antibacterial layer 2 includes a support layer 1 21 disposed on one side of the inner layer 1 close to the outer layer 3, and a support layer 2 22 disposed on one side of the outer layer 3 close to the inner layer 1, the support layer 1 21 and the support layer 2 22 are both alternately provided with hot-pressed convex parts and concave parts, the hot-pressed convex parts on the support layer 1 21 and the support layer 2 22 are symmetrically arranged and fixed together by hot pressing, the concave parts on the support layer 1 21 and the support layer 2 22 are symmetrically arranged and form a receiving cavity 24, and an antibacterial support member 25 is provided inside the receiving cavity 24;

[0079] The antibacterial support member 25 includes a flat base layer and an antibacterial and deodorizing coating formed by coating the upper and lower surfaces of the base layer.

[0080] A method for preparing a durable antibacterial and deodorizing down jacket fabric comprises the following steps:

[0081] Step 1: Extruding a support layer 1 21 and a support layer 2 2 on the inner layer 1 and the antibacterial layer 2 through an extrusion die, and extruding a straight base layer through the extrusion die;

[0082] Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying, thereby obtaining an antibacterial support member 25;

[0083] Step 3: stack the inner layer 1 and the antibacterial layer 2, so that the hot-pressed convex parts and concave parts of the support layer 1 21 and the support layer 2 22 are placed corresponding to each other, and perform hot-pressing treatment on the inner layer 1, the antibacterial layer 2, and the hot-pressed convex parts of the support layer 1 21 and the support layer 2 22, and form a receiving cavity 24 between the concave parts of the support layer 1 21 and the support layer 2 22 after hot-pressing and fixing treatment;

[0084] Step 4: Place the antibacterial support member 25 prepared in step 2 into the accommodating cavity 24 prepared in step 3, and place the antibacterial support member 25 flat against the inner side surface (support layer 1 21 and / or support layer 2 22) of the accommodating cavity 24 for hot pressing and fixing to obtain a durable antibacterial and deodorizing down jacket fabric.

[0085] The rest are consistent with Example 3.

[0086] 3. Performance Test Experiment

[0087] It should be noted that the antibacterial performance test sample fabrics, tear resistance test sample fabrics, and anti-down performance test sample fabrics of the following embodiments 1-3 and comparative examples 1-2 are all subjected to hot pressing treatment to heat-press and lock the inner layer 1, the antibacterial layer 2, and the outer layer 3 (the hot pressing treatment temperature is 135℃±2℃, the hot pressing pressure is 5MPa, the number of hot pressing times is 3 times, and the hot pressing time each time is 5min) to keep the front and rear ends of the accommodating cavity 24 in a sealed state.

[0088] Antibacterial performance test: according to GB / T 20944.2-2007 "Evaluation of antibacterial properties of textiles Part 2: Absorption method", test bacteria: Staphylococcus aureus (including but not limited to this bacteria, candida, Escherichia coli, etc.), according to the standard, each fabric sample was cut into 20mm×20mm size, and antibacterial test was carried out on unwashed long-lasting antibacterial and deodorizing down jacket fabric samples, long-lasting antibacterial and deodorizing down jacket fabric samples after 30 washes (washed 30 times in a drum washing machine with a speed of 1200r / min, each washing time is 20min), and long-lasting antibacterial and deodorizing down jacket fabric samples after 50 washes (washed 50 times in a drum washing machine with a speed of 1200r / min, each washing time is 20min).

[0089] Table 1 Antibacterial performance test data record table

[0090]

[0091] Experimental conclusion: From the data in Table 1, it can be seen that the fabric sample of Example 3 can still maintain a good effect after washing 50 times, which shows that the antibacterial effect of the fabric sample of Example 3 can be maintained for a longer time. The difference between Example 1 and Example 3 is that in Example 1, there is no pressing strip 23 and the bending part 251 for hot pressing fixation, and there is no pressing strip 23 pressing the winding part 252 toward the supporting layer 1 21 or the supporting layer 2 22. Compared with Example 3, the antibacterial rate of the fabric sample of Example 1 decreases to a certain extent after washing 30 times and 50 times.

[0092] The difference between Example 2 and Example 3 is that Example 2 does not fix the pressing strip 23 and the bending portion 251 by hot pressing, and the difference between Example 2 and Example 1 is that Example 1 does not have the pressing strip 23. Therefore, after washing 30 times and 50 times, the antibacterial rate of the fabric sample of Example 2 is higher than that of Example 1, but lower than that of Example 3.

[0093] This shows that the structural design of the pressing strip 23 can press the antibacterial support member 25 toward the support layer 1 21 or the support layer 2 22, thereby increasing the structural stability of the antibacterial layer 2, so that the antibacterial rate of the fabric sample is maintained for a longer period of time, and hot pressing and fixing the pressing strip 23 and the bent portion 251 further increases the structural stability of the antibacterial layer 2, thereby further maintaining the antibacterial rate of the fabric sample for a longer period of time;

[0094] In comparative example 1, the process of winding to form the winding portion 252 is carried out without heating conditions (carried out at room temperature), so that the winding portion 252 formed by winding is easy to loosen after multiple washings; in comparative example 2, the straight base layer with the antibacterial and deodorizing coating is directly fixed to the inner side of the support layer 1 21 and / or the support layer 2 22 by hot pressing, that is, there is no structural design of the bending portion 251 and the winding portion 252 as shown in Example 3; the fabric samples of comparative examples 1 and comparative examples 2 have a relatively small decrease in antibacterial rate after washing 30 times and 50 times. Significantly, the antibacterial rate of the fabric sample in comparative example 2 was only 39.1% after being washed 50 times. This shows that the structural design of the bending portion 251 and the winding portion 252 and their stability have a significant influence on the maintenance effect of the antibacterial effect of the fabric, especially the structural design of the winding portion 252. The winding portion 252 includes a base layer and an antibacterial and deodorizing coating formed by coating the upper and lower surfaces of the base layer. After winding, the antibacterial and deodorizing coating layers are stacked, which can emit antibacterial and deodorizing components for a longer time, thereby allowing the fabric to maintain a longer antibacterial and deodorizing effect.

[0095] Tear resistance test: Experimental equipment: Q800 dynamic mechanical analyzer (DMA, TA Instruments, Inc., USA). Experimental method: take the durable antibacterial and deodorant down jacket fabrics of the above-mentioned Examples 1-3 and Comparative Examples 1-2 as samples. The sample specifications are 35×15mm strips. The samples are placed in a stretching fixture, one end is fixed, and the other end can move with the fixture. The temperature is 22℃±3℃, the frequency is set to 2Hz, and the applied stress is gradually increased from 0 at a speed of 3MPa / s. The strain change of the sample is recorded until the sample breaks, and the stress at the breaking point is taken as the tensile strength of the sample.

[0096] Among them, the tear resistance test sample fabrics are specifically unwashed long-lasting antibacterial and deodorant down jacket fabrics; long-lasting antibacterial and deodorant down jacket fabrics washed 35 times (washed 35 times in a drum washing machine with a speed of 1200r / min, and each washing time is 25min); long-lasting antibacterial and deodorant down jacket fabrics washed 50 times (washed 50 times in a drum washing machine with a speed of 1200r / min, and each washing time is 25min).

[0097] Table 2 Tear resistance test data record

[0098]

[0099] Experimental conclusion: It can be seen from the data in Table 2 that the tear resistance of the fabric sample of Example 3 is the best, and there is only a slight decrease after washing 35 times and 50 times. Example 3 is the optimal embodiment. By comparing Example 1-2 with Example 3, it can be seen that the winding portion 252 is directed toward the support layer 1 21 or the support layer 2 22 by the pressure strip 23, and then the pressure strip 23 and the bending portion 251 are hot-pressed and fixed, which can improve the tear resistance of the fabric sample. By comparing Example 3 with Comparative Examples 1-2, it can be seen that the structural design of the bending portion 251 and the winding portion 252 in the present application, especially the structural design of the bending portion 251, can significantly improve the tear resistance of the fabric.

[0100] Anti-down performance test: According to the national standard GB / T12705.2-2009 "Test method for anti-down leakage of textile fabrics Part 2: Transfer box method", the anti-down drilling performance of the fabric is tested. When the number of down drilling roots of the fabric is greater than 15, the anti-down drilling performance is poor; when the number of down drilling roots is 5<≤15, it has anti-down drilling performance; when the number of down drilling roots is ≤5, it has good anti-down drilling performance.

[0101] Among them, the sample fabrics for the anti-down drilling performance test are specifically unwashed long-lasting antibacterial and deodorant down jacket fabrics; long-lasting antibacterial and deodorant down jacket fabrics washed 25 times (washed 25 times in a drum washing machine with a speed of 1600r / min, and each washing time is 20min); long-lasting antibacterial and deodorant down jacket fabrics washed 40 times (washed 40 times in a drum washing machine with a speed of 1600r / min, and each washing time is 20min).

[0102] Table 3 Anti-drilling performance test data record table

[0103]

[0104] Experimental results: It can be seen from the data in Table 3 that the fabric samples of Examples 1-3 and Comparative Example 1 have good anti-down drilling effect after washing 25 times and 40 times. By comparing Comparative Example 2 with Example 3, it can be seen that the bending structure design of the antibacterial support 25 divides the internal space of the accommodating cavity 24 into multiple chambers, and the front and rear ends of the accommodating cavity 24 are kept sealed. The internal space structure of the accommodating cavity 24 is complex, and down is not easy to penetrate, thereby improving the anti-down drilling effect of the fabric. The technical solution of Comparative Example 1 is that the winding portion 252 is easy to loosen after multiple washings. Although it has a certain impact on the overall structural stability of the antibacterial support 25, it will make the internal space of the accommodating cavity 24 more and more complex, so that it can still maintain a good anti-down drilling effect.

[0105] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A durable antibacterial and deodorizing down jacket fabric, characterized by: It comprises an inner layer (1), an antibacterial layer (2), and an outer layer (3) which are connected in sequence; The antibacterial layer (2) comprises a support layer 1 (21) arranged on a side of the inner layer (1) close to the outer layer (3), and a support layer 2 (22) arranged on a side of the outer layer (3) close to the inner layer (1), the support layer 1 (21) and the support layer 2 (22) are both provided with hot-pressed convex parts and concave parts alternately, the hot-pressed convex parts on the support layer 1 (21) and the support layer 2 (22) are symmetrically arranged and fixed together by hot pressing, the concave parts on the support layer 1 (21) and the support layer 2 (22) are symmetrically arranged and form a receiving cavity (24), and an antibacterial support member (25) is provided inside the receiving cavity (24); The antibacterial support member (25) comprises a bending portion (251) and winding portions (252) located on both sides of the bending portion (251), and the upper and lower end surfaces of the bending portion (251) are respectively fixed to the inner layer (1) and the outer layer (3) by hot pressing; The bending portion (251) and the winding portion (252) both include a base layer and an antibacterial and deodorizing coating formed by coating the upper and lower surfaces of the base layer.

2. The durable antibacterial and deodorizing down jacket fabric according to claim 1, characterized in that: The two winding parts (252) are arranged in a diagonal manner, and two pressing strips (23) for pressing the winding parts (252) are arranged in a diagonal manner on the inner side surface of the accommodating cavity (24).

3. The durable antibacterial and deodorizing down jacket fabric according to claim 2, characterized in that: The side surface where the bending portion (251) and the winding portion (252) are connected is fixed together with the pressing strip (23) by heat pressing.

4. A durable antibacterial and deodorizing down jacket fabric according to any one of claims 1 to 3, characterized in that: The supporting layer 1 (21), the supporting layer 2 (22), the pressing strip (23), the bending portion (251), and the winding portion (252) are all made of polyamide material or polypropylene material.

5. A method for preparing the durable antibacterial and deodorizing down jacket fabric according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Extruding a support layer 1 (21) and a support layer 2 (22) on the inner layer (1) and the antibacterial layer (2) through an extrusion die, and extruding a flat base layer through the extrusion die; Step 2: coating the upper and lower surfaces of the base layer obtained in step 1 with an antibacterial agent and a fragrance finishing agent, and obtaining an antibacterial and deodorizing coating after drying; performing a hot pressing treatment on the middle part of the base layer with the antibacterial and deodorizing coating by a hot pressing device to form a bending portion (251); and under heating conditions, respectively winding the two sides of the base layer with the antibacterial and deodorizing coating toward the bending portion (251) to form a winding portion (252), thereby obtaining an antibacterial support member (25); Step 3: stacking the inner layer (1) and the antibacterial layer (2) so that the hot-pressed convex parts and concave parts of the supporting layer 1 (21) and the supporting layer 2 (22) are placed corresponding to each other, and performing hot-pressing treatment on the inner layer (1), the antibacterial layer (2) and the hot-pressed convex parts of the supporting layer 1 (21) and the supporting layer 2 (22), so that a receiving cavity (24) is formed between the concave parts of the supporting layer 1 (21) and the supporting layer 2 (22) after the hot-pressing fixing treatment; Step 4: Place the antibacterial support member (25) prepared in step 2 into the accommodating cavity (24) prepared in step 3, and fix the antibacterial support member (25) with support layer 1 (21) and support layer 2 (22) by hot pressing to obtain a durable antibacterial and deodorizing down jacket fabric.

6. The method for preparing a durable antibacterial and deodorizing down jacket fabric according to claim 5, characterized in that: In step one, a pressing strip (23) is extruded on the inner layer (1) and the antibacterial layer (2) through an extrusion die; in step four, the antibacterial support member (25) is fixed to the pressing strip (23) by heat pressing.

7. The method for preparing a durable antibacterial and deodorizing down jacket fabric according to claim 5, characterized in that: In step 2, the hot pressing temperature is 120-130°C, the hot pressing pressure is 1-3MPa, the number of hot pressing times is 1-3 times, and the hot pressing time for each time is 2-4min; the heating temperature when winding the base layer is 85-95°C.

8. The method for preparing a durable antibacterial and deodorizing down jacket fabric according to claim 5, characterized in that: In step three, the temperature of the hot pressing fixation treatment is 135-150° C., the hot pressing pressure is 5-7 MPa, the number of hot pressing times is 5-7 times, and the hot pressing time for each time is 3-5 minutes.

9. The method for preparing a durable antibacterial and deodorizing down jacket fabric according to claim 6, characterized in that: In step 4, the temperature of the hot pressing fixation treatment is 130-140° C., the hot pressing pressure is 3-5 MPa, the number of hot pressing times is 2-4 times, and the hot pressing time for each time is 2-5 minutes.

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