Polyester tape waterless digital direct jet printing process

Abstract

The present application relates to a kind of polyester braid anhydrous digital direct jet printing process, comprising the following steps: S1, the polyester braid is shaped and treated, then dried, and shaped braid is obtained;S2, using polyester pretreatment liquid is printed to the shaped braid, and after printing, it is dried, and the pretreated polyester braid is obtained;S3, the pretreated polyester braid is directly jet printed, and printing polyester braid is obtained;S4, the printing polyester braid is dried, and the dried printing polyester braid is obtained;S5, the dried printing polyester braid is heated and fixed color, and after cooling, finished product is obtained.The method solves the problem of a large amount of wastewater and waste printing paper in the existing polyester fabric printing process, and has environmental advantages.

Description

TECHNICAL FIELD

[0001] The present application relates to digital printing technology, and in particular to a polyester tape waterless digital direct jet printing process. BACKGROUND

[0002] With the improvement of digital printer technology, digital printing has quickly covered the entire fabric market, replacing traditional manual printing and dyeing and traditional flat screen, rotary screen and intaglio printing methods. Among them, digital transfer printing is to print the pattern to be printed on the special transfer printing paper to form a pattern film after image software processing, and then transfer the pattern to the surface of the fabric through the transfer paper. Its main operation process is: computer drawing → digital printing to printing paper → printing paper and fabric lamination → hot pressing to fabric through high temperature (260℃). The heat transfer printing is printed on the fabric through the transfer paper, and the whole process does not need water, but consumes a large amount of transfer paper.

[0003] Digital direct jet printing process is to directly spray ink on the fabric, and then perform subsequent processing, and its main operation process is: sizing → printing → color development (steaming → washing → fixing → drying), wherein sizing and color development both need to use a large amount of water, thus a large amount of wastewater is generated, which affects the ecological environment. Among them, sizing is to prevent the dye sprayed on the surface of the fabric from penetrating, so as to obtain a clear pattern; the second is to promote the combination of dye and fiber in a wet and hot state, so as to obtain a certain color depth and color fastness. The quality of sizing will directly affect the printing quality, such as the penetration, penetration performance of dye on the fabric, the outline clarity of printed pattern and the color yield of dye, etc. Color development, i.e. steaming, makes the printed fabric complete the moisture absorption and temperature rise of fiber and color paste film, accelerates the dyeing of dye, and makes the dye diffuse into the interior of the fiber and fixed on the fiber.

[0004] Therefore, sizing and color development are essential in the existing process, and the amount of wastewater is large and difficult to treat. How to reduce the pollution and consumption in the process of polyester fabric digital printing is a problem that needs to be solved urgently.

[0005] Patent application CN113981717A discloses a kind of polyester fiber fabric without watermark printing process, after grinding, disperse dye is added into dye kettle, supercritical fluid carbon dioxide is injected into dye kettle, heating temperature is raised to 45~55 ℃, the pressure in dye kettle is 2.5~3.5 MPa, heat preservation 30~40 min, disperse dye is completely dissolved in supercritical fluid carbon dioxide, and dyeing solvent is prepared.Dye is dissolved in supercritical fluid carbon dioxide, and the fiber surface of fabric is approached by the jet diffusion of supercritical fluid carbon dioxide, is adsorbed by fiber surface, and diffuses to the inside of fiber, and finally is fixed in the inside of fiber, to realize waterless printing.Dyeing device is closed structure, fabric is transported by first roller and second roller, and is placed through digital inkjet printing machine, printing speed block, after printing, through drying area, the dyeing and fixing of disperse dye on polyester fiber are completed.The technology uses supercritical fluid carbon dioxide as solvent, and the production cost is higher. SUMMARY

[0006] The purpose of the present application is to overcome the problem of wastewater in existing polyester ribbon digital direct jet printing, and to provide a polyester ribbon waterless digital direct jet printing process, which combines the advantages of heat transfer printing and traditional digital direct jet printing, does not need to use transfer paper, and does not produce wastewater, greatly reducing the pollution to the environment.

[0007] The specific scheme is as follows:

[0008] A polyester ribbon waterless digital direct jet printing process, comprising the following steps:

[0009] S1, the polyester ribbon is treated, and then dried to obtain a shaped fabric;

[0010] S2, a polyester pretreatment solution is used to spray the shaped fabric, and then dried to obtain a pretreated polyester ribbon;

[0011] S3, the pretreated polyester ribbon is subjected to digital direct jet printing to obtain a printed polyester ribbon;

[0012] S4, the printed polyester ribbon is dried to obtain a dried printed polyester ribbon;

[0013] S5, the dried printed polyester ribbon is heated and fixed, and then cooled to obtain a finished product.

[0014] Further, the temperature of the shaping treatment in S1 is 150-200 ℃, preferably 180 ℃; the time of the shaping treatment is 20-90 s, preferably 30-60 s;

[0015] Preferably, the temperature of the dried printed polyester ribbon is 80-120 ℃, and the fabric moving speed is 10-20 m / min.

[0016] Further, the polyester pretreatment liquid in S2 comprises the following components by weight percentage: surfactant 2-8%, defoaming agent 1-3%, penetrating agent 3-8%, anti-float agent 3-10%, ammonium bisulfate 1-3%, acrylic copolymer 10-20%, and the balance is water;

[0017] Preferably, the polyester pretreatment liquid comprises the following components by weight percentage: surfactant 3-6%, defoaming agent 2-3%, penetrating agent 4-8%, anti-float agent 4-8%, ammonium bisulfate 1-3%, acrylic copolymer 10-15%, and the balance is water;

[0018] More preferably, the polyester pretreatment liquid comprises the following components by weight percentage: surfactant 4%, defoaming agent 3%, penetrating agent 6%, anti-float agent 6%, ammonium bisulfate 2%, acrylic copolymer 12%, and the balance is water.

[0019] Further, the surfactant is at least one of sodium dodecyl benzene sulfonate, sodium fatty acid methyl ester sulfonate, sodium co-camphor monoethanolamide sulfosuccinate, and cocamide propyl betaine;

[0020] Preferably, the defoaming agent is at least one of silicone defoaming agent, more preferably dimethyl silicone oil, lauryl phenylacetate, hydroxydimethyl silicone, and organically modified polysiloxane;

[0021] Preferably, the penetrating agent is a single ammonia compound, more preferably Tona Chemical NT 02 rapid dyeing aid;

[0022] Preferably, the anti-float agent is a modified anionic polymer compound, preferably 303S anti-float agent from Jiangmen Xinhui District Haiyun Chemical Co., Ltd.

[0023] Further, the digital direct jet printing in S3 uses dispersed thermal transfer ink, and the printing is performed in a CMYK color printing mode.

[0024] Further, the digital direct jet printing in S3 uses dispersed ink from Deseda, and the color configuration is C / M / Y / K, and the color configuration conditions include:

[0025] Color C value M value Y value K value 413C Beige C＝6 M＝23 Y＝47 K＝2 11C Khaki C＝6 M＝26 Y＝48 K＝4 Light Green C＝6 M＝21 Y＝63 K＝23 Dark Green C＝18 M＝2 Y＝68 K＝28 Light Brown C＝9 M＝58 Y＝70 K＝13 Dark Brown C＝25 M＝50 Y＝69 K＝47 .

[0026] Further, the drying in S4 is far infrared radiation treatment, and the power is 100-1000W, preferably 200-500W;

[0027] Preferably, the treatment time of the far infrared radiation treatment is 10-120min, preferably 20-60min.

[0028] Preferably, the moisture content of the fabric is reduced to 40-50% after the far infrared radiation treatment.

[0029] Further, the temperature for heat setting in S5 is 100-200 DEG C, preferably 130-180 DEG C.

[0030] Preferably, the heat setting time is 1-10 min, preferably 3-8 min.

[0031] The application also protects the printed fabric belt obtained by the polyester fabric belt waterless digital direct jet printing process.

[0032] Further, the printed fabric belt has a penetration rate of 13.0-13.5% for direct jet printing, and a pattern rubbing fastness of 4 levels.

[0033] Beneficial effects:

[0034] In the application, the polyester fabric belt waterless digital direct jet printing process realizes a waterless digital direct jet printing process, i.e. printing a polyester pretreatment liquid, after digital jet printing, without water washing and color developing treatment of the fabric, directly heat setting, obtaining a finished product with clear patterns and high color fastness.

[0035] The polyester fabric waterless digital direct jet printing process provided by the application does not need to use transfer paper throughout the process, and the pretreatment liquid can be repeatedly used, without producing wastewater, reducing environmental pollution, and having environmental protection advantages. DETAILED DESCRIPTION

[0036] The preferred embodiments of the application will be described in more detail below. Although the preferred embodiments of the application are described below, it should be understood that the application can be implemented in various forms and should not be limited by the embodiments described herein. If no specific technology or condition is specified in the examples, the technology or condition described in the literature in the art or according to the product instructions is used. If the manufacturer of the reagent or instrument is not specified, it is a conventional product that can be obtained by purchase. In the following examples, unless otherwise specified, "%" means weight percent, and parts refer to weight parts.

[0037] The main reagents used below include:

[0038] Penetrating agent: Tona Chemical NT 02 rapid dyeing aid.

[0039] Anti-float agent: 303S anti-float agent provided by Jiangmen Xinhui District Haiyun Chemical Co., Ltd.

[0040] The test methods used below include:

[0041] (1) Ink penetration degree:

[0042] The K / S value of the printed color area and the white cloth before printing is used to represent the degree of ink penetration, and the calculation formula of the printing penetration rate is: printing penetration rate = K / S value of the back of the fabric - K / S value of the white cloth - K / S value of the front of the fabric - K / S value of the white cloth x 100%. The higher the penetration rate, the worse the printing fineness and the printing effect.

[0043] (2) Rubbing fastness:

[0044] Test according to GB / T 3920-2008 "Textile color fastness test rubbing fastness".

[0045] Preparation Examples 1-6

[0046] Prepare a polyester pretreatment solution, and the amount of each component is shown in Table 1. The method is as follows:

[0047] Prepare each raw material in proportion. First, add the penetrant to the container and preheat to dissolve. Add a certain proportion of aqueous solution to facilitate the preparation of subsequent multiple additives. Heat at 60°C for 2 hours. Then add the surfactant, defoamer, anti-float agent, ammonium bisulfate, and acrylic acid copolymer to the container and mix and stir. Keep heating at 60°C for 12 hours. Finally, filter the material solution to obtain the pretreatment solution.

[0048] Table 1: Amount of each component (wt%)

[0049]

[0050] Comparative Example 1

[0051] Refer to Preparation Example 1 to prepare a control pretreatment solution. The only difference is that the penetrant is replaced with the same amount of water.

[0052] Comparative Example 2

[0053] Refer to Preparation Example 1 to prepare a control pretreatment solution. The only difference is that the ammonium bisulfate is replaced with the same amount of water.

[0054] Comparative Example 3

[0055] Refer to Preparation Example 1 to prepare a control pretreatment solution. The only difference is that the acrylic acid copolymer is replaced with the same amount of sodium alginate.

[0056] Example 1

[0057] Use the pretreatment solutions prepared in Preparation Examples 1-6 and Comparative Examples 1-3 to perform digital direct printing on polyester fabric without water, including the following steps:

[0058] S1, the polyester tape is subjected to setting treatment, the temperature is 180℃, the setting time is 60s, and the cooling temperature is 50℃, so that a setting fabric is obtained;

[0059] S2, the setting tape is subjected to vehicle printing by using the pretreatment liquid, and is dried after printing, the temperature is 100℃, and the fabric moving speed is 15m / min, so that a pretreated polyester tape is obtained;

[0060] S3, the pretreated polyester tape is subjected to digital direct jet printing by using Desata dispersion ink, the color configuration is C / M / Y / K, and the specific configuration is shown in Table 2, so that a printed polyester tape is obtained.

[0061] Table 2: Direct jet printing color matching table

[0062] Color C value M value Y value K value 413C Beige C＝6 M＝23 Y＝47 K＝2 11C Khaki C＝6 M＝26 Y＝48 K＝4 Light Green C＝6 M＝21 Y＝63 K＝23 Dark Green C＝18 M＝2 Y＝68 K＝28 Light Brown C＝9 M＝58 Y＝70 K＝13 Dark Brown C＝25 M＝50 Y＝69 K＝47

[0063] S4, the printed polyester tape is dried by using far infrared radiation to pre-dry the fabric, the power is 300W, the treatment time is 20min, after far infrared radiation treatment, the moisture content of the fabric is reduced to 44%, so that a dried printed polyester tape is obtained.

[0064] S5, the dried printed polyester tape is subjected to heat fixation by using a high-temperature fixation box, the treatment is carried out at 130℃ for 5min, finally, the fabric is conveyed to a cooling rack for cooling, and is conveyed to a cloth output device for cloth output, so that a finished product is obtained.

[0065] The printed fabric finished product is tested, and the test results are shown in Table 3.

[0066] Table 3: Test results

[0067]

[0068]

[0069] Example 2

[0070] The pretreatment liquid prepared in Preparation Example 1 is used for waterless digital direct jet printing of a polyester tape, including the following steps:

[0071] S1, the polyester tape is subjected to setting treatment, the temperature is 170℃, the setting time is 50s, and the cooling temperature is 50℃, so that a setting tape is obtained;

[0072] S2, the setting tape is subjected to vehicle printing by using the pretreatment liquid, and is dried after printing, the temperature is 90℃, and the tape moving speed is 12m / min, so that a pretreated polyester tape is obtained;

[0073] S3, the pretreated polyester tape is directly jet printed, Desata dispersion ink is used, color configuration: C / M / Y / K, and the printing polyester tape is obtained, as shown in Table 2.

[0074] S4, the printing polyester tape is dried, far infrared radiation is used to pre-dry the fabric, the power is 400W, the treatment time is 60min, after far infrared radiation treatment, the moisture content of the fabric is reduced by 42%, and the dried printing polyester tape is obtained.

[0075] S5, the dried printing polyester tape is heated and fixed, a high-temperature fixing box is used, the treatment is carried out at 140℃ for 5min, finally the tape is sent to a cooling rack for cooling, and the finished product is obtained by feeding into the cloth device. The test shows that the rubbing fastness grade of the finished product fabric is 4.

[0076] Example 3

[0077] The pretreatment liquid prepared in Preparation Example 1 is used for waterless digital direct jet printing of polyester tape, including the following steps:

[0078] S1, the polyester tape is shaped, the temperature is 160℃, the shaping time is 40s, and the cooling temperature is 50℃, and the shaped tape is obtained.

[0079] S2, the pretreatment liquid is used to spray the shaped tape, and the tape is dried after printing, the temperature is 110℃, and the tape moving speed is 18m / min, and the pretreated polyester tape is obtained.

[0080] S3, the pretreated polyester tape is directly jet printed, Desata dispersion ink is used, color configuration: C / M / Y / K, and the printing polyester tape is obtained, as shown in Table 2.

[0081] S4, the printing polyester tape is dried, far infrared radiation is used to pre-dry the fabric, the power is 500W, the treatment time is 30min, after far infrared radiation treatment, the moisture content of the tape is reduced by 41%, and the dried printing polyester tape is obtained.

[0082] S5, the dried printing polyester tape is heated and fixed, a high-temperature fixing box is used, the treatment is carried out at 150℃ for 5min, finally the fabric is sent to a cooling rack for cooling, and the finished product is obtained by feeding into the cloth device. The test shows that the rubbing fastness grade of the finished product fabric is 4.

[0083] Example 4

[0084] The pretreatment liquid prepared in Preparation Example 1 is used for waterless digital direct jet printing of polyester tape, including the following steps:

[0085] S1, the polyester tape is treated, the temperature is 150 ℃, the setting time is 60 s, the cooling temperature is 50 ℃, and the setting tape is obtained;

[0086] S2, the setting tape is sprayed with the pretreatment liquid, and is printed, and after printing, drying is carried out, the temperature is 100 ℃, and the tape moving speed is 15 m / min, and the pretreated polyester tape is obtained.

[0087] S3, the pretreated polyester tape is directly sprayed and printed, and the HOTME dispersed ink is used, and the color configuration is C / M / Y / K, and the specific table 2 is shown, and the printed polyester tape is obtained.

[0088] S4, the printed polyester tape is dried, and the far infrared radiation is used to pre-dry the fabric, the power is 800 W, the processing time is 20 min, after the far infrared radiation treatment, the fabric moisture content is reduced by 40%, and the dried printed polyester tape is obtained.

[0089] S5, the dried printed polyester tape is heated and fixed, the high-temperature fixing box is used, the temperature is 160 ℃, the processing time is 5 min, finally, the tape is conveyed to the cooling frame and cooled, and the finished product is obtained. The finished product fabric is tested, and the rubbing fastness grade is 4.

[0090] Example 5

[0091] The pretreatment liquid prepared in preparation example 1 is used for the waterless digital direct jet printing of the polyester tape, including the following steps:

[0092] S1, the polyester tape is treated, the temperature is 200 ℃, the setting time is 30 s, the cooling temperature is 50 ℃, and the setting tape is obtained.

[0093] S2, the setting tape is sprayed with the pretreatment liquid, and is printed, and after printing, drying is carried out, the temperature is 100 ℃, and the tape moving speed is 15 m / min, and the pretreated polyester tape is obtained.

[0094] S3, the pretreated polyester fabric is directly sprayed and printed, and the HOTME dispersed ink is used, and the color configuration is C / M / Y / K, and the specific table 2 is shown, and the printed polyester tape is obtained.

[0095] S4, the printed polyester tape is dried, and the far infrared radiation is used to pre-dry the fabric, the power is 800 W, the processing time is 20 min, after the far infrared radiation treatment, the fabric moisture content is reduced by 40%, and the dried printed polyester tape is obtained.

[0096] S5, heating and fixing color of the dried printed polyester tape, using high temperature fixing box, treating at 170℃ for 5min, finally transferring the fabric to cooling rack for cooling, feeding into cloth outlet device for cloth outlet, obtaining finished product. It is tested that the rubbing fastness grade of the finished product fabric is 4.

[0097] Comparative Example 4

[0098] Using the pretreatment liquid prepared in Preparation Example 1, carrying out polyester tape anhydrous digital direct jet printing, referring to Example 1, the difference is that S1 step is not carried out, mainly including the following steps:

[0099] S1, using the pretreatment liquid to spray the polyester tape, printing and drying, temperature is 100℃, tape moving speed is 15m / min, obtaining pretreated polyester tape;

[0100] S2, carrying out digital direct jet printing on the pretreated polyester tape, using Desda dispersion ink, color configuration: C / M / Y / K, specific as shown in Table 2, obtaining printed polyester tape.

[0101] S3, drying the printed polyester tape, using far infrared radiation to pre-dry the fabric, power is 300W, treating time is 20min, after far infrared radiation treatment, reducing the moisture content of the tape to 44%, obtaining dried printed polyester tape;

[0102] S4, heating and fixing color of the dried printed polyester tape, using high temperature fixing box, treating at 130℃ for 5min, finally transferring the tape to cooling rack for cooling, feeding into cloth outlet device for cloth outlet, obtaining finished product. It is tested that the rubbing fastness grade of the finished product tape is 3.

[0103] Comparative Example 5

[0104] Carrying out polyester tape anhydrous digital direct jet printing, referring to Example 1, the difference is that S2 step is not carried out, mainly including the following steps:

[0105] S1, carrying out setting treatment on the polyester tape, temperature is 180℃, setting time is 60s, cooling temperature is 50℃, obtaining set tape;

[0106] S2, carrying out digital direct jet printing on the set tape, using Desda dispersion ink, color configuration: C / M / Y / K, specific as shown in Table 2, it is found that the dye is difficult to form predetermined pattern on the fabric.

[0107] Comparative Example 6

[0108] The polyester pretreatment liquid on the market Jiaxing Boke New Material Co., Ltd. PL-0012021415 type dispersion pretreatment liquid is used for waterless digital direct jet printing of the polyester tape, and the same process treatment as in the reference example 1 is carried out, mainly including the following steps:

[0109] S1, the polyester tape is subjected to setting treatment, the temperature is 180 DEG C, the setting time is 60 s, and the cooling temperature is 50 DEG C, and the set tape is obtained;

[0110] S2, the pretreatment liquid on the market is used for printing on the set tape, and after printing and drying, the temperature is 100 DEG C, and the tape moving speed is 15 m / min, and the pretreated polyester tape is obtained;

[0111] S3, the pretreated polyester tape is subjected to digital direct jet printing, and the De Sida dispersion ink is used, the color configuration is C / M / Y / K / , and the specific configuration is shown in Table 2, and it is found that the ink is seriously penetrated on the fabric, and the boundary of the printed pattern is not obvious.

[0112] The preferred embodiments of the application are described in detail above, but the application is not limited to the specific details in the above-described embodiments, and within the technical concept range of the application, the technical solutions of the application can be subjected to various simple modifications, and these simple modifications all belong to the protection range of the application.

[0113] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the application.

[0114] In addition, various different embodiments of the application can also be combined in any manner, as long as it does not deviate from the idea of the application, and it should be considered as disclosed by the application.

Claims

1. A polyester tape waterless digital direct jet printing process, characterized in that: It comprises the following steps: S1, the polyester tape is subjected to setting treatment, the temperature of the setting treatment is 150-200 DEG C, the time of the setting treatment is 20-90s, and a setting tape is obtained; S2, a polyester pretreatment liquid is used to spray printing on the setting tape, and the printed tape is dried to obtain a pretreated polyester tape; the polyester pretreatment liquid comprises the following components in percentage by weight: surfactant 2-8%, defoaming agent 1-3%, penetrating agent 3-8%, anti-float agent 3-10%, ammonium bisulfate 1-3%, acrylic copolymer 10-20%, and the balance is water; the surfactant is at least one of sodium dodecyl benzene sulfonate, sodium fatty acid methyl ester sulfonate, sodium coco monoethanolamide sulfosuccinate, and cocamide propyl betaine; the defoaming agent is at least one of dimethyl silicone oil, benzene acetic acid lauryl ester, hydroxy polydimethyl siloxane, and organically modified polysiloxane; the penetrating agent is a single ammonia compound, and the anti-float agent is a modified anionic polymer compound; S3, the pretreated polyester tape is subjected to digital direct jet printing to obtain a printed polyester tape; S4, the printed polyester tape is dried to obtain a dried printed polyester tape; S5, the dried printed polyester tape is subjected to heat fixation, the temperature of the heat fixation is 100-200 DEG C, the heat fixation time is 1-10 min, and the product is obtained after cooling; Through the direct jet printing process, the printed tape has a penetration rate of 13.0-13.5 % and a pattern rubbing fastness of 4 levels.

2. The polyester webbing waterless digital direct jet printing process according to claim 1, characterized in that: The temperature of the setting treatment in S1 is 180 DEG C, and the time of the setting treatment is 30-60s; The drying temperature after printing in S2 is 80-120 DEG C, and the fabric moving speed is 10-20 m / min.

3. The polyester webbing waterless digital direct jet printing process according to claim 1, wherein: The polyester pretreatment liquid comprises the following components in percentage by weight: surfactant 3-6%, defoaming agent 2-3%, penetrating agent 4-8%, anti-float agent 4-8%, ammonium bisulfate 1-3%, acrylic copolymer 10-15%, and the balance is water.

4. The polyester webbing waterless digital direct jet printing process according to claim 3, characterized in that: The polyester pretreatment liquid comprises the following components in percentage by weight: surfactant 4%, defoaming agent 3%, penetrating agent 6%, anti-float agent 6%, ammonium bisulfate 2%, acrylic copolymer 12%, and the balance is water.

5. The polyester webbing waterless digital direct jet printing process according to claim 1, wherein: The digital direct jet printing in S3 adopts dispersed heat transfer ink and uses a CMYK color printing mode for direct jet printing.

6. The polyester webbing waterless digital direct jet printing process according to claim 1, wherein: The drying in S4 is far infrared radiation treatment, and the power is 100-1000 W.

7. The polyester webbing waterless digital direct jet printing process according to claim 6, characterized in that: The power is 200-500 W.

8. The polyester webbing waterless digital direct jet printing process according to claim 6, wherein: The treatment time of the far infrared radiation treatment is 10-120 min.

9. The polyester webbing waterless digital direct jet printing process according to claim 8, characterized in that: The treatment time of the far infrared radiation treatment is 20-60 min.

10. The polyester webbing waterless digital direct jet printing process according to claim 6, wherein: After the far infrared radiation treatment, the moisture content of the fabric is reduced by 40%-50%.

11. The polyester webbing waterless digital direct jet printing process according to claim 1, wherein: The temperature of the heat fixation in S5 is 130-180 DEG C, and the heat fixation time is 3-8 min.

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