Cool-feeling printing material fitting printing method

Abstract

The invention discloses a fitting printing method of a cool printing material. The fitting printing method comprises the following steps: selecting cool printing base cloth and cool printing patterns; carrying out preshrinking treatment on the cool-feeling printed base cloth; the preshrinked cool printing base cloth is conveyed to a cloth feeding device to be printed with cool printing paste and enters a rubber blanket after passing through a cloth pressing roller, a net aligning device is adjusted to be aligned with a net plate, and the pressure and angle of a scraper are adjusted; and after printing is completed, drying, cloth discharging and shaping are carried out. The invention develops a printing technology with a cool feeling function by applying the cool feeling material as the printing paste to the piece decoration printing. The technology not only endows the fabric with a cool feeling effect, but also enables the fabric to keep good air permeability and have a certain shaping function, the additional value and the use comfort of the fabric are improved, and the technology has important practical significance and market value.

Description

Technical Field

[0001] The invention relates to a piece-printing method for a cool-feeling printed material, and belongs to the technical field of textile functional fabrics. Background Art

[0002] In the textile printing process, piece printing is a common technology. Piece printing refers to the process of printing a predetermined pattern on the fabric through a printing machine, which is usually applied to mass-produced textiles. Traditional piece printing technology has made significant progress in visual effects and durability. However, with the increasing market demand for high-performance and multifunctional textiles, traditional printing methods can no longer meet consumer requirements in some performance aspects.

[0003] In recent years, as people's requirements for quality of life continue to increase, the demand for textiles with a cool effect has been growing. Cool textiles can provide a cool and comfortable wearing experience in high temperature environments, and are suitable for summer clothing, sportswear, outdoor equipment and other fields. At present, the methods of achieving coolness can be divided into three categories according to the development technology: one is to prepare cool fabrics using cool fibers that have a cool feeling or have been modified to increase thermal conductivity; the second is to prepare cool fabrics through fabric organization design combined with cool fibers; the third is to use post-finishing methods to give the fabric a cool function by applying a cool coating to the fabric. Among them, the first two development methods have disadvantages such as high cost and complex processing. In comparison, the use of post-finishing methods to prepare cool fabrics, such as applying a cool coating to the fabric, is simple to operate and low in cost, but there are also problems such as the coating affecting the air permeability and feel of the fabric. Summary of the invention

[0004] The technical problem to be solved by the present invention is: how to improve the air permeability and hand feel of the cool fabric.

[0005] In order to solve the above problems, the present invention provides a method for printing a cool printing material, comprising the following steps:

[0006] Step 1): Select a cool printed base fabric and a cool printed pattern;

[0007] Step 2): pre-shrinking the cool printed base fabric;

[0008] Step 3): Send the pre-shrunk cool-feeling printing base fabric to the cloth feeding device for printing with cool-feeling printing slurry, and enter the rubber blanket after passing through the cloth pressing roller. Adjust the screen device to align with the screen plate, and adjust the pressure and angle of the scraper; the function of the cloth pressing roller is to press the fabric flatly on the surface of the rubber blanket during printing, and to adhere to the rubber blanket by the adhesive layer without relative movement, so as to ensure the accuracy of the pattern. The screen device needs to be adjusted up and down to make the printing uniform, and ensure that there is no left-right color difference, arc tilt and other problems.

[0009] Step 4): After printing is completed, the cloth is dried, taken out and shaped.

[0010] Preferably, the cool printed base fabric in step 1) is selected from nylon-spandex fabric, polyester fabric with absorption and discharge function, or cotton knitted fabric containing more than 60wt% of long-staple cotton, in order to better reflect the characteristics of the cool material; the fabric structure of the cool printed base fabric adopts weft-knitted double-sided structure, plain structure, warp-knitted single-warp plain or double-warp plain structure. These types of structures are relatively flat and have greater contact with the skin, which can better reflect the characteristics of the cool material.

[0011] Preferably, in step 1), the cool printed pattern adopts at least one of honeycomb hexagons, small circles, and small triangles, and the volume of the pattern accounts for 20%-30%, so as to achieve a balance between water evaporation and heat conduction in the case of slight sweating.

[0012] Preferably, the pre-shrinkage treatment in step 2) is specifically: placing the cool feeling printing base in a tunnel furnace for pre-shrinkage treatment, the treatment temperature is 150-160°C, and the machine time is 90-120s, the purpose is to reduce wrinkles on the back of the fabric caused by the inconsistent shrinkage rate of the cool feeling printing material and the fabric.

[0013] Preferably, the cool printing slurry in the step 3) is diluted before use: 40-50% by mass of pure water is added, and 1% by mass of cool printing slurry is added to thicken the slurry, and the slurry is placed in a beater to beat its viscosity to a Brookfield viscosity cp value of 15000-17000 mPa·s, in order to prevent the cool printing slurry that is too viscous and has a high solid content from affecting the feel of the fabric after printing and forming wrinkles on the back of the fabric.

[0014] Preferably, in step 3), a flat screen printing machine or a rotary screen printing machine is selected for printing; when a flat screen printing machine is selected, the speed of the flat screen printing machine is 40 m / min, and the screen pressure is 10 N; when a rotary screen printing machine is selected, the specifications of the rotary screen and the rotary screen mesh must be selected in advance, and the specifications of the rotary screen are 640 mm in circumference and 1620 mm in working width, and the specifications of the rotary screen mesh are 150 meshes / cm 2 , mesh diameter 0.083mm, thickness 0.08mm, the purpose is to minimize the tension of the fabric, so that it can be fed into the rubber blanket under slight tension. During the printing process, pay attention to the printing effect and adjust the parameters of the printing machine in time to ensure that the printing quality and effect meet the requirements. After printing is completed, clean the printing net and the color paste tank of the printing machine in time to prevent the color paste from drying.

[0015] Preferably, the parameters of the cloth feeding device in step 3) are: adjusting the cloth tensioner on the upper machine to 10, and adjusting the line speed to 30 m / min.

[0016] Preferably, in step 3), the pressure of the scraper is set to 1 pound and the angle is set to 45°. At the same time, it is noted that the pressure and position of both ends of the scraper must be the same to ensure uniform printing color.

[0017] Preferably, in step 4), an air cushion hot air dryer is used to dry the printed cloth by hot air circulation, which is suitable for contactless drying. The drying temperature is 160° C. and the drying time is 90 seconds. During the drying process, a polyester mesh conveyor belt is used to carry the fabric.

[0018] Preferably, in step 4), the cloth is discharged by a flat-width folding cloth discharging device or a rolling cloth discharging device, and the cloth is shaped by a shaping machine to ensure the stability of the size and the feel.

[0019] The present invention develops a printing technology with a cooling function by applying a cooling material as a printing slurry to piece printing. Such technology not only gives the fabric a cooling effect, but also enables the fabric to maintain good air permeability and have a certain shaping function, thereby improving the added value and comfort of the fabric, and has important practical significance and market value.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] Compared with the traditional post-finishing coating method, the present invention adopts printing technology, which not only gives the fabric a cooling function, but also maintains the air permeability and soft feel of the fabric and enables the fabric to have a certain plasticity function, thereby avoiding affecting the wearing experience. In addition, the cooling function is directly added to the fabric through the piece-printing method, which simplifies the processing process, reduces production costs, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of a flat screen printing machine, model is Japan Toshin 7000;

[0023] Figure 2 This is a schematic diagram of a rotary screen printing machine, model is Austrian Chima TG / 158;

[0024] In the figure: 11-cloth feeding device 1, 12-guide belt sizing device, 13-screen frame, 14-screen printing unit, 15-guide belt washing device, 16-hot air drying room, 17-cloth discharge device, 21-cloth feeding device 2, 22-preheating plate, 23-cloth pressing roller, 24-printing guide belt, 25-rotary screen, 26-scraper, 27-guide belt assembly position, 28-guide belt cleaning device, 29-drying room conveying net, 20-dryer. DETAILED DESCRIPTION

[0025] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0026] Example 1

[0027] A method for printing a cool printing material in a piece-by-piece manner, comprising the following steps:

[0028] Nylon-spandex blended fabric is selected as the printing base fabric, the fabric structure is weft-knitted double-sided structure, and the printing pattern is honeycomb hexagon;

[0029] Place the selected substrate in a tunnel furnace for pre-shrinkage treatment at a temperature of 150-160°C and a machine time of 90-120 seconds;

[0030] Add 40-50% pure water to the cool printing slurry and add 1% thickener, put the slurry into a beater, and beat the slurry to a Brookfield viscosity cp value of 15000-17000 mPa·s;

[0031] The rotary screen printing machine is used for printing. The rotary screen with a circumference of 640mm and a working width of 1620mm is selected. The mesh number is 150 holes / cm. 2 The pre-shrunk fabric is printed on the machine with a round mesh with a mesh diameter of 0.083mm and a thickness of 0.08mm. The cloth tensioner is adjusted to 10, the line speed to 30 meters / minute, the scraper pressure to 1 pound, and the scraper angle to 45 degrees.

[0032] The printed fabric was placed in a hot air dryer at 160°C for 90 seconds and transported with a polyester mesh conveyor belt.

[0033] The fabric is folded flat and shaped using a shaping machine.

Claims

1. A method for printing a cool printing material, characterized in that: The following steps are involved: Step 1): Select a cool printed base fabric and a cool printed pattern; Step 2): pre-shrinking the cool printed base fabric; Step 3): Send the pre-shrunk cool-feeling printing base fabric to the fabric feeding device for printing with the cool-feeling printing slurry, pass through the pressing roller and enter the rubber blanket, adjust the screen device to align with the screen plate, and adjust the scraper pressure and angle; Step 4): After printing is completed, the cloth is dried, taken out and shaped.

2. The method for printing a cool feeling printed material according to claim 1, characterized in that: The cool printed base fabric in step 1) is selected from nylon-spandex fabric, polyester fabric with absorption and discharge function, or cotton knitted fabric containing more than 60wt% of long-staple cotton. The fabric structure of the cool printed base fabric is weft-knitted double-sided structure, plain structure, warp-knitted single-warp plain structure or double-warp plain structure.

3. The method for printing a cool feeling printed material according to claim 1, characterized in that: In the step 1), the cool printing pattern adopts at least one of a honeycomb hexagon, a small circle, and a small triangle, and the volume proportion of the pattern is 20%-30%.

4. The method for printing a cool feeling printed material according to claim 1, characterized in that: The pre-shrinking treatment in step 2) is specifically as follows: placing the cool feeling printing base in a tunnel oven for pre-shrinking treatment, the treatment temperature is 150-160° C., and the machine time is 90-120 seconds.

5. The method for printing a cool feeling printed material according to claim 1, characterized in that: The cool printing slurry in step 3) is diluted before use: 40-50% by mass of pure water is added, and 1% by mass of cool printing slurry is added to thicken the slurry, and the slurry is put into a beater to be beaten to a Brookfield viscosity cp value of 15000-17000 mPa·s.

6. The method for printing a cool feeling printed material according to claim 1, characterized in that: In the step 3), a flat screen printing machine or a rotary screen printing machine is selected for printing; when a flat screen printing machine is selected, the speed of the flat screen printing machine is 40 m / min, and the screen pressure is 10 N; when a rotary screen printing machine is selected, the specifications of the rotary screen and the rotary screen mesh must be selected in advance, the specifications of the rotary screen are 640 mm in circumference, 1620 mm in working width, and the specifications of the rotary screen mesh are 150 meshes / cm 2 , mesh diameter 0.083mm, thickness 0.08mm.

7. The method for printing a cool feeling printed material according to claim 1, characterized in that: The parameters of the cloth feeding device in step 3) are: adjusting the cloth tensioner on the upper machine to 10, and adjusting the line speed to 30 m / min.

8. The method for printing a cool feeling printed material according to claim 1, characterized in that: In step 3), the pressure of the scraper is set to 1 pound and the angle is set to 45°.

9. The method for printing a cool feeling printed material according to claim 1, characterized in that: The drying temperature in step 4) is 160° C. and the drying time is 90 seconds. During the drying process, a polyester mesh conveying guide belt is used to carry the fabric.

10. The method for printing a cool feeling printed material according to claim 1, characterized in that: In the step 4), the cloth is discharged by flat-width folding, and is shaped by a shaping machine.

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