Fabric prepared from powder shaking-free digital ink-jet glue

Abstract

The invention discloses a fabric prepared from digital ink-jet glue free of shaking powder, and a preparation method of the fabric comprises the following steps: 201, carrying out color ink jet printing on a corresponding pattern to a PET (Polyethylene Terephthalate) transfer film to be printed according to a preset pattern by using a printer filled with coating color ink, coating white ink and the digital ink-jet glue free of shaking powder in the embodiment, wherein the nozzle filled with the shake-free powder digital ink-jet glue is an ink-cavity-free nozzle; s202, slightly baking and drying the pattern on the PET transfer film in the step S201 until the pattern does not flow and is not stained; s203, performing jet printing on the digital ink-jet glue free of shaking powder to the pattern on the PET transfer film in the S202, and then performing drying treatment; and S204, carrying out hot pressing treatment on the PET transfer film obtained in the step S203 and a fabric, cooling, and separating the PET transfer film.

Description

Technical Field

[0001] This invention relates to the field of digital inkjet printing technology, and more particularly to a fabric prepared with a toner-free digital inkjet adhesive. Background Technology

[0002] Direct-to-Film (DTF) printing is a digital production technology that has rapidly emerged in the textile printing industry in recent years. Through the core process of "printing-powder application-transfer," it achieves the combination of high-precision patterns with diverse fabrics. The core logic of DTF printing involves printing digital patterns onto PET film, enhancing adhesion by applying hot melt adhesive powder, and then transferring the image to the target fabric via heat pressing.

[0003] The specific process includes: ① Digital inkjet printing: Water-based pigment ink (including white ink) is printed onto a DTF-specific film using an industrial printhead; ② Electrostatic powder coating: Hot melt adhesive powder with a particle size of 100-200μm is evenly spread using a powder shaker, and an adhesive layer with a thickness of 0.1-0.3mm is formed by electrostatic adsorption, with edge precision controlled within ±0.02mm; ③ Intelligent drying: Constant temperature tunnel drying at 80-120℃, which melts the adhesive powder and solidifies it with the ink, simultaneously locking in the color and preventing bleeding; ④ Hot pressing transfer: Pressing at 150-170℃ for 5-15 seconds, the adhesive layer forms covalent bonds with the fabric fibers, and the pattern transfer is completed after peeling off the film.

[0004] Compared to traditional screen printing, DTF reduces costs by 60% for small-batch orders (less than 100 pieces) and shortens delivery time from 30 days to 1-3 days, making it the preferred process for fast fashion brands (such as ZARA and H&M).

[0005] However, the DTF powder shaking process also has some problems. The electrostatic adsorption uniformity of the powder is poor and is greatly affected by the ambient humidity (optimal humidity 40%-60%) and the particle size distribution of the powder (deviation is easy to occur in the 100-200μm range). It is easy to have "edge powder overflow" (0.5-1mm of powder residue at the edge of the pattern) or "local powder shortage" (coverage rate less than 80%), which leads to blurred edges of the pattern after transfer and reduced color fastness (fading occurs after 3-5 washes).

[0006] Secondly, the fabric has poor hand feel and breathability: the film formed after the adhesive powder cures (0.1-0.3mm thick) will cause the fabric to "clump together", resulting in a stiff hand feel (hardness value > 60 Shore A) and a 40%-60% decrease in breathability (from 800g / (m²・24h) to 300-480g / (m²・24h)).

[0007] In addition, there are environmental risks. Some low-priced adhesive powders contain phthalates (plasticizers), which may cause skin irritation with long-term exposure. Furthermore, adhesive powder particles (particle size < 100μm) are prone to dust pollution during the powder shaking process, and the dust concentration in the workshop often exceeds the occupational exposure limit (PC-TWA 8mg / m³), which endangers workers' health.

[0008] Furthermore, the printing quality is poor. Although DTF supports gradient colors and fine lines, it is prone to uneven powder accumulation when printing large areas of solid color (such as full-coverage printing on an entire garment), resulting in poor surface smoothness (unevenness > 0.1mm). In addition, to avoid oversaturation, the ink volume for light-colored patterns is usually only 1 / 3 to 1 / 2 of that for dark-colored patterns (e.g., about 2-3g / ㎡ for light-colored T-shirt patterns and about 6-8g / ㎡ for dark-colored patterns). The powder needs a "wet film" of ink as a carrier. Insufficient ink volume will result in a small contact area between the powder and the ink. The small amount of powder adsorption is not enough to resist the airflow sweeping after powder removal (especially the back suction stage of automatic powder removal machines). Ultimately, the amount of residual powder is insufficient, making it impossible to effectively transfer light-colored patterns.

[0009] Therefore, some manufacturers have attempted to use anti-shake toner adhesives to replace anti-shake toner applications and achieve the same effect. However, anti-shake toner adhesives, in order to achieve "print-on-determination," typically require the addition of high-molecular-weight thickeners (such as polyurethane and acrylate), with viscosity reaching 50-500 cP. The resins also contain a significant amount of particulate matter (100-500 nm in diameter). Mainstream printheads, such as the EPSON I3200, have ink chambers. These printheads require the ink chamber to be properly wetted before ink can be ejected smoothly, and this wetting primarily relies on alcohol. To achieve good adhesion with anti-shake toner adhesives, low-alcohol adhesives are needed. However, such adhesives cannot effectively wet the ink chamber, thus failing to provide sufficient fluidity and easily adhering to and remaining on the inner wall of the ink chamber. Long-term use will form a dried layer, leading to ink chamber blockage. Furthermore, anti-shake toner adhesives contain microparticles, which easily settle at the bottom of the ink chamber, further exacerbating blockage and requiring frequent disassembly and cleaning of the ink chamber (which is difficult and easily damages seals). It is not conducive to the implementation of the DTF process for eliminating the need for powder shake. Summary of the Invention

[0010] To solve the above-mentioned technical problems, this application provides a fabric prepared with a toner-free digital inkjet adhesive, which uses the toner-free digital inkjet adhesive and is used in conjunction with an inkless printhead, thereby effectively solving the above-mentioned technical problems.

[0011] To solve the above-mentioned technical problems, this application provides a fabric prepared with a toner-free digital inkjet adhesive, which is manufactured by the following method, the method comprising:

[0012] S201, by using a printer containing colored ink, white ink, and the anti-shake powder of the digital inkjet adhesive in the above embodiment, the corresponding pattern is printed onto the PET transfer film to be printed according to a preset pattern, wherein the printhead containing the anti-shake powder of the digital inkjet adhesive is an inkless printhead.

[0013] S202, Micro-dry the pattern on the PET transfer film from step S201 until it no longer drips ink or stains;

[0014] S203, the digital inkjet adhesive of the anti-shake powder is sprayed onto the pattern on the PET transfer film in S202, and then dried.

[0015] S204, the PET transfer film obtained in step S203 is subjected to hot pressing with the fabric. After cooling, the PET transfer film is separated. The digital inkjet adhesive of the anti-shake powder comprises the following components by weight percentage:

[0016] Thickener 5%-15%;

[0017] Polyester emulsion 65-85%;

[0018] Wetting agent 0.1-1%;

[0019] Defoamer 0.1%-0.5%;

[0020] Leveling agent 0.1%-0.5%;

[0021] Fungicide 0.05%-0.2%

[0022] The remainder is deionized water.

[0023] In a preferred embodiment, the method includes: attaching an oil-absorbing paper to the surface of the printed fabric obtained in step S204, performing a second hot-pressing treatment, and then peeling off the film.

[0024] In a preferred embodiment, in step S203, the digital inkjet adhesive used for printing the anti-shake toner is printed twice.

[0025] In a preferred embodiment, during the micro-drying process in step S202, the heating temperature is 40-60°C.

[0026] In a preferred embodiment, the amount of adhesive sprayed in step S203 is 20%-50% of the amount of ink sprayed in step S201. More preferably, it is 25%-35%.

[0027] In a preferred embodiment, in step S203 above, the amount of adhesive sprayed is 60%-90%.

[0028] In a preferred embodiment, in step S202, the drying temperature is 140-160°C and the drying time is 3-5 minutes.

[0029] In a preferred embodiment, the hot-pressing temperature is 150-170°C and the time is 5-15 seconds.

[0030] In a preferred embodiment, the method for preparing the anti-shake digital inkjet adhesive includes:

[0031] S101, add thickener to the reactor, add polyester emulsion while stirring, and stir until uniform;

[0032] S102, under stirring, add deionized water, wetting agent, defoamer, leveling agent and bactericide to the reactor in sequence, and stir at 500-800 r / min until uniform;

[0033] S103, filter, and you get digital inkjet adhesive.

[0034] In a preferred embodiment, in step S103, the viscosity of the filtered digital inkjet adhesive is 20-500 mPa·s (25°C), and the surface tension is 25-45 mN / m.

[0035] Beneficial effects

[0036] High pattern precision: Inkjet printing achieves precise positioning of the adhesive layer, with clear edges and no adhesive edge, and can adapt to fine patterns (line width ≤ 0.1mm).

[0037] Excellent performance: The adhesive layer is thin and flexible, the fabric is soft to the touch, the breathability is improved, and the wash fastness and rubbing fastness meet industry standards.

[0038] Simplified process: No need for powder shaking equipment or adhesive powder, reducing 2-3 steps and increasing production efficiency by 50%;

[0039] Cost reduction: With a rubber utilization rate of over 95%, the overall cost is reduced by 20-30%. Attached Figure Description

[0040] Figure 1 A flowchart is shown showing the preparation method of the digital inkjet adhesive for applying the anti-shake powder;

[0041] Figure 2 A flowchart illustrating a method for preparing patterned fabrics is shown. Detailed Implementation

[0042] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0043] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0044] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0045] According to one aspect of this application, a digital inkjet adhesive with anti-shake powder according to a preferred embodiment of the present invention and its preparation method will be described in detail below, wherein the digital inkjet adhesive with anti-shake powder comprises the following components by weight percentage:

[0046] Thickener 5%-15%;

[0047] Polyester emulsion 65-85%;

[0048] Wetting agent 0.1-1%;

[0049] Defoamer 0.1%-0.5%;

[0050] Leveling agent 0.1%-0.5%;

[0051] Fungicide 0.05%-0.2%

[0052] The remainder is deionized water. Furthermore, the inkjet adhesive used in the DTF process has a viscosity of 20-500 cP (measured at 25°C using a rotational viscometer), a pH of 7.5-8.5, a particle size distribution D50 ≤ 200 nm, and a surface tension of 25-45 mN / m. The ratio of wetting agent to polyurethane emulsion (dry weight) is 1.7%-2.2%.

[0053] Preferably, the thickener is at least one selected from ethylene glycol, propylene glycol, glycerin, PEG200, hydroxyethyl cellulose, and polyglycerol.

[0054] Preferably, the polyester emulsion is at least one of polyurethane emulsion, acrylate emulsion, and polyamide resin; the polyurethane emulsion has a solid content of 30-50% and a particle size of 50-200 nm.

[0055] Preferably, the wetting agent is a polyether-modified organosilicon wetting agent or a fluorocarbon wetting agent.

[0056] Preferably, the defoamer is an alkynyl alcohol defoamer or an organosilicon defoamer.

[0057] Preferably, the leveling agent is an organosilicon-based leveling agent.

[0058] Preferably, the bactericide is at least one of PROXEL GXL and Rohm and Haas LEX.

[0059] Example 1

[0060] Start stirring and add 8% hydroxyethyl cellulose thickener to the reactor. While stirring, add 65% Mitsui Chemicals 6110 polyester emulsion and stir at 500 rpm for 30 minutes. Then, add 0.3% wetting agent Wet245, 0.3% defoamer 104E, 0.1% leveling agent BYK348, 0.1% bactericide GXL, and the remainder water. Stir at 800 rpm for 120 minutes. Filter the mixture sequentially using a 0.45µm GF column filter and a 1.0µm nylon 66 column filter to obtain the digital inkjet adhesive.

[0061] Example 2

[0062] Start stirring and add 8% hydroxyethyl cellulose thickener to the reactor. While stirring, add 65% Ube 6001D polyester emulsion and stir at 500 rpm for 30 minutes. Then, add 0.3% wetting agent Wet245, 0.3% defoamer 104E, 0.1% leveling agent BYK348, 0.1% bactericide GXL, and the remainder water. Stir at 800 rpm for 120 minutes. Filter the solution sequentially using a 0.45µm GF column filter and a 1.0µm nylon 66 column filter to obtain the digital inkjet adhesive.

[0063] Example 3

[0064] Start stirring and add 8% hydroxyethyl cellulose thickener to the reactor. While stirring, add 65% Huigu PU-2371 polyester emulsion and stir at 500 rpm for 30 minutes. Then, add 0.3% wetting agent Wet245, 0.3% defoamer 104E, 0.1% leveling agent BYK348, 0.1% bactericide GXL, and the remainder water in sequence. Stir at 800 rpm for 120 minutes. Filter the mixture using a 0.45µm GF column filter and a 1.0µm nylon 66 column filter in sequence to obtain the digital inkjet adhesive.

[0065] Wash fastness test: According to ISO 105 "Textiles - Tests for color fastness" Part C06, take the transferred patterned fabric and wash it at 40°C for 45 minutes to test for color staining. Then, use a rubbing fastness tester to test the dry rubbing fastness, cycle 20 times, and check whether the pattern comes off.

[0066] Stiffness test: The transferred fabric is judged by hand feel and compared with the original fabric, and differentiated according to "soft / soft / medium / slightly stiff / stiff".

[0067] Table 1 shows the formulations and test results for Examples 1-3.

[0068]

[0069] As shown in Table 1, aliphatic polyurethane resin has good hand feel and fastness. Inkjet adhesive made according to this formula can achieve good printing, and the fabric produced meets the fastness requirements.

[0070] Example 4

[0071] Start stirring and add 8% hydroxyethyl cellulose thickener to the reactor. While stirring, add 60% polyester emulsion PU-2371 and stir at 500 rpm for 30 minutes. Then, add wetting agent Wet245 0.3%, defoamer 104E 0.3%, leveling agent BYK348 0.1%, bactericide GXL 0.1%, and the remainder water to the reactor in sequence. Stir at 800 rpm for 120 minutes. Filter the mixture using a 0.45µm GF column filter and a 1.0µm nylon 66 column filter in sequence to obtain the digital inkjet adhesive.

[0072] Examples 5-7 were prepared using the same preparation method as Example 4, but with different polyester emulsion ratios. The specific formulations are shown in Table 2.

[0073] Table 2 shows the formulations and test results for Examples 3-7:

[0074]

[0075] Table 2 shows that polyurethane resin can directly improve the fastness of ink on fabrics; the higher the amount of resin, the better the fastness. The table also indicates that a polyurethane content of 65%-85% is relatively suitable.

[0076] Examples 8-12 were prepared using the same preparation method as Example 3 but with different formulations. The specific formulations are shown in Table 3.

[0077] Table 3a shows the formulations and test results for Examples 8-12:

[0078]

[0079] As shown in Table 3a, both the fastness and printing stability are within the acceptable range.

[0080] Comparative Examples 1-3 were prepared using the same configuration method as in Example 2, except that the ratios of wetting agent and polyurethane were different.

[0081] Table 3b shows the formulations and test results of Comparative Examples 1-3.

[0082]

[0083] As shown in Table 3b, the adhesive formulation with the best flowability can be obtained when the ratio of wetting agent to polyurethane is between 1.7% and 2.2% (dry weight).

[0084] Comparative Example 4

[0085] Take an existing epoxy adhesive from the market and use an inkjet printer to print the adhesive and transfer the pattern onto the fabric.

[0086] Comparative Example 5

[0087] Take a commercially available silicone adhesive and use an inkjet printer to print the adhesive and transfer the pattern onto the fabric.

[0088] Comparative Example 6

[0089] Take a commercially available nitrile latex, use an inkjet printer to print the pattern onto the fabric.

[0090] Table 3c shows the test results for Example 2 and Comparative Examples 1-3.

[0091]

[0092] As shown in Table 3c, epoxy resin, silicone resin, and nitrile resin are not types of adhesives used for DTF (Dystolen Powder).

[0093] According to another aspect of this application, this application also provides a method for preparing a toner-free digital inkjet adhesive, wherein the method includes:

[0094] S101, add thickener to the reactor, add polyester emulsion while stirring, and stir until uniform;

[0095] S102, under stirring, add deionized water, wetting agent, defoamer, leveling agent and bactericide to the reactor in sequence, and stir at 500-800 r / min until uniform;

[0096] S103, filtration, to obtain digital inkjet adhesive, wherein the anti-shake digital inkjet adhesive comprises the following components by weight percentage:

[0097] Thickener 5%-15%;

[0098] Polyester emulsion 65-85%;

[0099] Wetting agent 0.1-1%;

[0100] Defoamer 0.1%-0.5%;

[0101] Leveling agent 0.1%-0.5%;

[0102] Fungicide 0.05%-0.2%

[0103] The remainder is deionized water.

[0104] Preferably, in step S103, the viscosity of the filtered digital inkjet adhesive is 20-500 mPa・s (25℃), and the surface tension is 25-45 mN / m.

[0105] According to another aspect of this application, this application also provides a method for preparing patterned fabric, the method comprising:

[0106] S201, by using a printer containing colored ink, white ink, and the anti-shake powder of the digital inkjet adhesive in the above embodiment, the corresponding pattern is printed onto the PET transfer film to be printed according to a preset pattern, wherein the printhead containing the anti-shake powder of the digital inkjet adhesive is an inkless printhead.

[0107] S202, Micro-dry the pattern on the PET transfer film from step S201 until it no longer drips ink or stains;

[0108] S203, the digital inkjet adhesive of the anti-shake powder is sprayed onto the pattern on the PET transfer film in S202, and then dried.

[0109] S204, the PET transfer film obtained in step S203 is subjected to hot pressing with the fabric, and after cooling, the PET transfer film is separated.

[0110] Preferably, the method for preparing the patterned fabric further includes:

[0111] S205, after applying an oil-absorbing paper to the surface of the printed fabric obtained in step S204, perform a second hot-pressing treatment, and then peel off the film.

[0112] It is worth mentioning that in step S203, the digital inkjet adhesive for printing the anti-shake powder is printed twice. The first time is for the mutual solubility of the adhesive and ink. By combining the resins of the same polarity in the adhesive and ink, a strong adhesion is achieved with the ink. At the same time, an adhesive layer is covered on the surface, which plays an important linking role for the second printing of the adhesive. This process can make the ink, adhesive and fabric have very strong adhesion and provide strong fastness.

[0113] A further solution is to use a heating temperature of 40-60℃ during the micro-drying process in step S202. This ensures the drying degree of the colored ink, white ink, and glue, preventing the ink from dripping while also ensuring it is not completely dry.

[0114] A further approach is to spray the adhesive in step S203 at 20%-50% of the ink spraying amount in step S201. More preferably, it is 25%-35%. This reduces excessive ink flow on the same pattern and allows the adhesive and white ink to mix thoroughly, creating a synergistic bond and better adhesion between the adhesive and ink. Finally, the adhesive can form a film on the surface. It is worth noting that too little ink spraying will cause the first layer of adhesive to fail, resulting in reduced adhesion of the second layer. Too much ink spraying will make drying difficult and may cause the adhesive layer to crack, affecting the image quality.

[0115] A further approach is to, in step S203 above, use 60%-90% of the adhesive sprayed, and install 1-4 sets of printheads on the inkjet printer, more preferably 2-3 sets, arranged in a staggered manner to allow the adhesive to be sprayed 2-3 times. This reduces the risk of excessive adhesive dripping, and the two applications of adhesive ensure sufficient adhesive for better bonding to the fabric.

[0116] Preferably, in step S202, the drying temperature is 140-160°C, and the drying time is 3-5 minutes. This ensures that the printed adhesive is completely dried on the PET film.

[0117] In step S204, the hot-pressing temperature is 150-170℃, and the time is 5-15 seconds. This ensures that the adhesive melts fully and has optimal tack, allowing it to bond firmly and completely to the fabric.

[0118] Preferably, the formulation of the anti-shake digital inkjet adhesive contains 50%-70% water-soluble anionic aliphatic polyurethane, with the effective component of the polyurethane being 30%-45% and the viscosity being <200 MPa. This amount of resin is added to ensure sufficient bonding effect, and the viscosity range is to ensure that the viscosity of inkjet adhesive #1 is not too high. In addition, a certain proportion of alcohol is added to the formulation to ensure wettability.

[0119] A further embodiment of the digital inkjet adhesive for eliminating printhead smudges contains 65%-85% water-soluble anionic polycarbonate polyurethane, with an effective polyurethane component of 40%-46% and a viscosity <200 mPa·s. The amount of resin added in the formulation is to provide sufficient adhesive strength to the fabric; a high effective component is necessary to ensure adequate resin content. The lower viscosity range is to reduce the viscosity of the adhesive formulation and to allow for the addition of a humectant to prevent printhead clogging.

[0120] Example 13

[0121] Inkjet printer #1 first prints color ink, then white ink, and then 15% ink volume of inkjet adhesive #1 on the PET transfer film. It is then dried on a 50℃ platform for 18 seconds. Next, inkjet printer #2 prints 70% ink volume of inkjet adhesive #2. It is then dried in an oven at 150℃ for 5 minutes, and finally heat-pressed at 160℃ for 10 seconds to transfer the ink from the PET film onto the black pure cotton fabric.

[0122] Example 14

[0123] First, inkjet printer #1 prints color ink, then white ink, and finally 30% ink volume of inkjet adhesive #1 on the PET transfer film. Dry it on a 50℃ platform for 20 seconds. Then, inkjet printer #2 prints 70% ink volume of inkjet adhesive #2. Dry it in an oven at 150℃ for 5 minutes, and then use a heat press at 160℃ for 10 seconds to transfer the ink from the PET film onto the black pure cotton fabric.

[0124] Example 15

[0125] Inkjet printer #1 first prints color ink, then white ink, and then 45% ink volume of inkjet adhesive #1 on the PET transfer film. It is then dried on a 50℃ platform for 30 seconds. Next, inkjet printer #2 prints 70% ink volume of inkjet adhesive #2. It is then dried in an oven at 150℃ for 5 minutes, and finally heat-pressed at 160℃ for 10 seconds to transfer the ink from the PET film onto the black pure cotton fabric.

[0126] Example 16

[0127] First, inkjet printer #1 prints color ink, then white ink, and finally 30% ink volume of inkjet adhesive #1 on the PET transfer film. Dry it on a 50℃ platform for 20 seconds. Then, inkjet printer #2 prints 100% ink volume of inkjet adhesive #2. Dry it in an oven at 150℃ for 5 minutes, and then use a heat press at 160℃ for 10 seconds to transfer the ink from the PET film onto the black pure cotton fabric.

[0128] Example 17

[0129] First, inkjet printer #1 prints color ink, then white ink, and finally 30% ink volume of inkjet adhesive #1 on the PET transfer film. Dry it on a 50℃ platform for 20 seconds. Then, inkjet printer #2 prints two more layers of inkjet adhesive #2 with 70% ink volume. Dry it in an oven at 150℃ for 5 minutes. Finally, use a heat press at 160℃ for 10 seconds to transfer the ink from the PET film onto the black pure cotton fabric.

[0130] Table 4 is a summary of the processes in Examples 12-17.

[0131]

[0132] The cotton fabric patterns obtained in Examples 12-17 were subjected to dry rubbing fastness test, washing fastness test, and hand stiffness test.

[0133] Adhesion fastness test: The cotton fabric with the transferred pattern is subjected to a dry rubbing fastness test in a color fastness tester for 20 cycles to check whether the pattern peels off.

[0134] Wash fastness test: According to ISO 105 "Textiles - Tests for color fastness" Part C06, take the transferred patterned fabric and wash it at 40°C for 45 minutes to test for color staining. Then, use a rubbing fastness tester to test the dry rubbing fastness, cycle 20 times, and check whether the pattern comes off.

[0135] Stiffness test: The transferred fabric is judged by hand feel and compared with the original fabric, and differentiated according to "soft / soft / medium / slightly stiff / stiff".

[0136] Table 5 shows the performance test results for Examples 12-17.

[0137]

[0138] Table 5 shows that the products obtained by the process of the present invention all meet the requirements.

[0139] Comparative Example 1

[0140] A medium-sized hot melt adhesive powder with a particle size of 80-170um, which is available on the market for DTF, was used to make a fabric sample using the conventional heat transfer powder shaking process.

[0141] Comparative Example 2

[0142] A fine powder with a particle size of 10-80um was selected from a commercially available hot melt adhesive powder for DTF and fabric samples were prepared using a conventional heat transfer powder shaking process.

[0143] Table 6 shows the performance test results of Example 14 and Comparative Examples 7-8.

[0144]

[0145] The test results in Table 5 show that the method for eliminating powder shaking in DTF coatings according to the present invention can effectively solve the problems of hard feel and poor light color transfer rate caused by powder shaking hot melt adhesive, and has the same wash fastness and adhesion fastness as DTF powder shaking. This process has good comprehensive performance.

[0146] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A fabric prepared with a toner-free digital inkjet adhesive, characterized by the following method, The method includes: S201, by using a printer containing colored ink, white ink, and the anti-shake powder of the digital inkjet adhesive in the above embodiment, the corresponding pattern is printed onto the PET transfer film to be printed according to a preset pattern, wherein the printhead containing the anti-shake powder of the digital inkjet adhesive is an inkless printhead. S202, Micro-dry the pattern on the PET transfer film from step S201 until it no longer drips ink or stains; S203, the digital inkjet adhesive of the anti-shake powder is sprayed onto the pattern on the PET transfer film in S202, and then dried. S204, the PET transfer film obtained in step S203 is subjected to hot pressing with the fabric. After cooling, the PET transfer film is separated. The digital inkjet adhesive of the anti-shake powder comprises the following components by weight percentage: Thickener 5%-15%; Polyester emulsion 65-85%; Wetting agent 0.1-1%; Defoamer 0.1%-0.5%; Leveling agent 0.1%-0.5%; Fungicide 0.05%-0.2% The remainder is deionized water.

2. The fabric prepared by the digital inkjet adhesive with anti-shake powder according to claim 1, characterized in that, The method includes: attaching an oil-absorbing paper to the surface of the printed fabric obtained in step S204, performing a second hot-pressing treatment, and then peeling off the film.

3. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, In step S203, the digital inkjet adhesive used for printing the anti-shake toner is printed twice.

4. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, In step S202, during the micro-drying process, the heating temperature is 40-60℃.

5. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, In step S203, the amount of adhesive sprayed is 20%-50% of the amount of ink sprayed in step S201, more preferably 25%-35%.

6. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, In step S203 above, the amount of glue sprayed is 60%-90%.

7. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, In step S202, the drying temperature is 140-160℃ and the drying time is 3-5 minutes.

8. The fabric prepared with the digital inkjet adhesive containing the anti-shake powder according to claim 1 or 2, characterized in that, The hot pressing temperature is 150-170℃, and the time is 5-15 seconds.

9. The fabric prepared by the digital inkjet adhesive with anti-shake powder according to claim 1, characterized in that, The preparation methods for anti-shake digital inkjet adhesive include: S101, add thickener to the reactor, add polyester emulsion while stirring, and stir until uniform; S102, under stirring, add deionized water, wetting agent, defoamer, leveling agent and bactericide to the reactor in sequence, and stir at 500-800 r / min until uniform; S103, filter, and you get digital inkjet adhesive.

10. The fabric prepared by the digital inkjet adhesive with anti-shake powder according to claim 3, characterized in that, In step S103, the viscosity of the filtered digital inkjet adhesive is 20-500 mPa・s (25℃), and the surface tension is 25-45 mN / m.

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