Digital printing method of real silk and polylactic acid blended fabric
By combining inkjet printing with acid dyes and disperse dyes with steam fixation treatment, the problem of polylactic acid fiber's inability to resist high temperatures and alkalis was solved, and efficient and environmentally friendly digital printing of silk and polylactic acid blended fabrics was achieved, improving printing quality and efficiency.
Patent Information
- Application Number
- CN202511001661.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2025-10-10
AI Technical Summary
Polylactic acid fiber is not resistant to high temperature and alkali. The existing printing process is complicated, inefficient and of poor quality. In addition, the strength of polylactic acid fiber and natural silk blended fabrics decreases under high temperature or alkaline conditions, resulting in poor printing effect.
Inkjet printing with acid dyes and disperse dyes is combined with steam fixation treatment to avoid overheating of polylactic acid and simplify the printing process. A one-step digital inkjet printing method is adopted, and steam fixation treatment is used to avoid high-temperature drying, followed by soap boiling and water washing.
It achieves high-quality, clear pattern printing effects, simplifies the process, reduces energy consumption, improves printing efficiency, avoids the strength reduction of polylactic acid fiber under high temperature or alkaline conditions, reduces printing wastewater, and meets environmental protection requirements.
Smart Images
Figure CN120759137A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of textile printing and dyeing, and particularly relates to a digital printing method for silk and polylactic acid blended fabric. BACKGROUND
[0002] Polylactic acid (PLA) fiber is made of corn, wheat, sugar beet and other starch-containing agricultural products as raw materials, fermented to generate lactic acid, and then polymerized and melt-spun. Polylactic acid fiber is a synthetic fiber that can be planted, easily planted, and naturally degraded in nature. It can be decomposed into carbon dioxide and water by microorganisms in soil or seawater, and will not emit toxic gas and cause pollution when burned. It is an ecological fiber that can be developed sustainably. The fabric has good hand feeling and drape, is resistant to ultraviolet rays, has low flammability and excellent processing performance, and is suitable for various fashion, casual wear, sports goods and sanitary products, etc., and has a broad application prospect.
[0003] At present, polylactic acid fiber and natural silk protein fiber blended fabric has better wearing effect, high product grade, and is deeply loved by customers. If digital printing is performed, the fabric grade is higher, more noble and luxurious, and the product is deeply loved by high-end customers.
[0004] However, polylactic acid fiber is not resistant to high temperature (130 DEG C) and alkali, and the fabric strength is significantly reduced when it is subjected to high temperature or alkali. At the same time, the conventional printing process has the problems of complex process, low efficiency and poor printing quality. SUMMARY
[0005] The purpose of the present application is to provide a digital printing method for silk and polylactic acid blended fabric. The digital printing method provided by the present application can effectively prevent polylactic acid from overheating, and significantly simplify the printing process by using one-step digital inkjet printing, improve work efficiency, and the printing product has high quality and clear pattern.
[0006] In order to achieve the above purpose, the present application provides the following technical scheme:
[0007] The present application provides a digital printing method for silk and polylactic acid blended fabric, comprising the following steps:
[0008] The silk and polylactic acid blended fabric is pretreated to obtain a pretreated blended fabric;
[0009] The pretreated blended fabric is subjected to inkjet printing, and the ink used for inkjet printing is a dye solution, the dye solution comprises an acid dye solution and a disperse dye solution, the acid dye solution and the disperse dye solution are respectively sprayed by different inkjet printing nozzles to obtain an inkjet printing treated blended fabric;
[0010] The fabric treated by the inkjet printing is subjected to a steaming fixation treatment to obtain a steaming fixation treatment blended fabric.
[0011] The steaming fixation treatment blended fabric is subjected to a post-treatment.
[0012] Preferably, the inkjet printing conditions include: a voltage of 8-17V, a nozzle pressure of 0.1-0.2MPa, and an ink spraying amount of 0.5-2.0kg / m 2 .
[0013] Preferably, the temperature of the dye solution is 20-25℃.
[0014] Preferably, the acid dye solution comprises an acid dye, a fixation agent, urea and water.
[0015] In the acid dye solution, the mass concentration of the acid dye is 0.5-35g / L, the mass concentration of the fixation agent is 0.49-0.51g / L, and the mass concentration of the urea is 19-21g / L.
[0016] Preferably, the disperse dye solution comprises a disperse dye, a dispersing agent and water.
[0017] In the disperse dye solution, the mass concentration of the disperse dye is 0.6-40g / L, and the mass concentration of the dispersing agent is 0.4-0.45g / L.
[0018] Preferably, the inkjet printing comprises: laying the pretreated blended fabric on a printing conveyor belt and performing inkjet printing by using multiple nozzles; and the speed of the conveyor belt is 1.0-3.0m / min.
[0019] Preferably, the steaming fixation is performed in a steaming box; the temperature of the steaming fixation is 102-105℃, and the time is 8-12min.
[0020] Preferably, the real silk and polylactic acid blended fabric is woven by warp yarns and weft yarns; the warp yarns are formed by real silk fibers, and the specification of the warp yarns is 40S; the weft yarns are formed by real silk fibers and polylactic acid fibers, and the specification of the weft yarns is 75D / 72F.
[0021] Preferably, in the real silk and polylactic acid blended fabric, the mass content of the real silk fibers is 60-65%, and the mass content of the polylactic acid fibers is 35-40%.
[0022] Preferably, the pretreated blended fabric has a capillary effect of ≥8cm / 30min and a fabric surface pH value of 6.5-7.5.
[0023] The post-treatment comprises sequentially performing soaping and washing.
[0024] The present application provides a digital printing method of silk and polylactic acid blended fabric, comprising the following steps: pretreating the silk and polylactic acid blended fabric to obtain a pretreated blended fabric; performing inkjet printing on the pretreated blended fabric, wherein the ink used in the inkjet printing is a dye solution, the dye solution comprises an acid dye solution and a disperse dye solution, the acid dye solution and the disperse dye solution are sprayed by different inkjet printing nozzles respectively, and a blended fabric treated by inkjet printing is obtained; performing steaming and fixing treatment on the blended fabric treated by inkjet printing to obtain a blended fabric treated by steaming and fixing; and performing post-treatment on the blended fabric treated by steaming and fixing. The one-step digital inkjet printing method can effectively avoid over-heating of polylactic acid, and has the advantages of simple process, short process flow, less equipment and low energy consumption. The obtained printed fabric has clear patterns, high printing quality, and good dye penetration, uniformity and flatness, which are all at a high level. Moreover, the printing wastewater is less, and the method is environment-friendly.
[0025] The digital printing method provided by the present application simultaneously adopts steaming and fixing treatment, which can effectively avoid the problem of over-heating of polylactic acid fiber during drying. Moreover, the dye solution comprises an acid dye solution and a disperse dye solution. Thus, the disadvantages of polylactic acid printing process, such as not resistant to high temperature and not resistant to alkali, are overcome, and the disadvantage of large strength decrease of the blended fabric during printing process under high temperature or alkali is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 A real object picture of the silk and polylactic acid blended fabric after printing by the digital printing method in the embodiments of the present application. DETAILED DESCRIPTION
[0027] The present application provides a digital printing method of silk and polylactic acid blended fabric, comprising the following steps:
[0028] Pretreating the silk and polylactic acid blended fabric to obtain a pretreated blended fabric;
[0029] Performing inkjet printing on the pretreated blended fabric, wherein the ink used in the inkjet printing is a dye solution, the dye solution comprises an acid dye solution and a disperse dye solution, the acid dye solution and the disperse dye solution are sprayed by different inkjet printing nozzles respectively, and a blended fabric treated by inkjet printing is obtained;
[0030] Performing steaming and fixing treatment on the blended fabric treated by inkjet printing to obtain a blended fabric treated by steaming and fixing;
[0031] Performing post-treatment on the blended fabric treated by steaming and fixing.
[0032] In the present application, all the raw materials / components are commercially available products well known to those skilled in the art, unless otherwise specified.
[0033] In the present invention, the inkjet printing is digital inkjet printing.
[0034] The present invention pre-treats the silk and polylactic acid blended fabric to obtain the pre-treated blended fabric.
[0035] In the present invention, the silk and polylactic acid blended fabric is preferably woven from warp yarns and weft yarns. The warp yarns are preferably formed from silk fibers. The warp yarns are preferably 40S in gauge. The weft yarns are preferably formed from silk fibers and polylactic acid fibers. The weft yarns are preferably 75D / 72F in gauge.
[0036] In the present invention, the mass content of the silk fiber in the silk and polylactic acid blended fabric is preferably 60-65%, more preferably 65%; the mass content of the polylactic acid fiber is preferably 35-40%, more preferably 35%.
[0037] The present invention has no special requirements for the specific implementation process of the pre-treatment. In the present invention, the capillary effect of the pre-treated blended fabric is preferably ≥8cm / 30min, and the pH value of the fabric surface is preferably 6.5-7.5, and in the embodiment can be 7 (neutral).
[0038] After obtaining the pre-treated blended fabric, the present invention performs inkjet printing on the pre-treated blended fabric. The ink used in the inkjet printing is a dye solution, which includes an acid dye solution and a disperse dye solution. The acid dye solution and the disperse dye solution are respectively sprayed from different inkjet printing nozzles to obtain an inkjet printed blended fabric.
[0039] In the present invention, the temperature of the dye solution is preferably 20-25°C. In the present invention, the inkjet printing is preferably performed using an acid dye solution and the disperse dye solution as inks, respectively, ejected from different inkjet printing nozzles. In the present invention, the acid dye solution is used to dye the silk fibers in the silk and polylactic acid blended fabric. The disperse dye solution is used to dye the polylactic acid fibers in the silk and polylactic acid blended fabric.
[0040] In the present invention, the acid dye solution preferably includes an acid dye, a fixing agent, urea and water. In the present invention, the acid dye preferably includes Shanghai Yayun Yagset N series and / or Anokia Anokite M series. The Anokia Anokite M series preferably includes one or more of Anokia Anokite M acid orange dye, Anokia Anokite M acid blue dye and Anokia Anokite M acid red dye. In an embodiment of the present invention, the acid dye includes Anokia Anokite M acid orange dye, Anokia Anokite M acid blue dye and Anokia Anokite M acid red dye. The fixing agent is preferably Shanghai Daxiang fixing agent.
[0041] In the present application, the acid dye solution preferably includes an acid orange dye solution, an acid blue dye solution, and an acid red dye solution. The acid orange dye solution, the acid blue dye solution, and the acid red dye solution are respectively sprayed as ink by different inkjet printing nozzles.
[0042] In the acid orange dye solution, the acid orange dye is preferably Anorthica Anoset M acid orange dye, the mass concentration of the acid orange dye is preferably 0.5-35 g / L, more preferably 5-30 g / L, and in the embodiment can be 27.5 g / L, the mass concentration of the fixing agent is preferably 0.49-0.51 g / L, more preferably 0.50 g / L, and the mass concentration of the urea is preferably 19-21 g / L, more preferably 20 g / L.
[0043] In the acid blue dye solution, the acid blue dye is preferably Anorthica Anoset M acid blue dye, the mass concentration of the acid blue dye is preferably 0.5-35 g / L, more preferably 5-30 g / L, and in the embodiment can be 16.25 g / L, the mass concentration of the fixing agent is preferably 0.49-0.51 g / L, more preferably 0.50 g / L, and the mass concentration of the urea is preferably 19-21 g / L, more preferably 20 g / L.
[0044] In the acid red dye solution, the acid red dye is preferably Anorthica Anoset M acid red dye, the mass concentration of the acid red dye is preferably 0.5-35 g / L, more preferably 5-30 g / L, and in the embodiment can be 9 g / L, the mass concentration of the fixing agent is preferably 0.49-0.51 g / L, more preferably 0.50 g / L, and the mass concentration of the urea is preferably 19-21 g / L, more preferably 20 g / L.
[0045] In the present application, the disperse dye solution preferably includes a disperse dye, a dispersant, and water. In the present application, the disperse dye preferably includes Anorthica ERD series and / or Desatech ETD class disperse dye. The Desatech ETD class disperse dye preferably includes one or more of Desatech ETD red dye, Desatech ETD black dye, and Desatech ETD yellow dye. In the embodiment of the present application, the disperse dye includes Desatech ETD red dye, Desatech ETD black dye, and Desatech ETD yellow dye. In the present application, the dispersant is preferably a dispersant of Daxiang Company.
[0046] In the present application, the disperse dye solution preferably includes a disperse red dye solution, a disperse black dye solution, and a disperse yellow dye solution. The disperse red dye solution, the disperse black dye solution, and the disperse yellow dye solution are respectively sprayed as ink by different inkjet printing nozzles.
[0047] The mass concentration of the disperse red dye in the disperse red dye solution is preferably 0.6-40 g / L, more preferably 5-35 g / L, further preferably 10-20 g / L, and 15 g / L in the examples; and the mass concentration of the dispersant is preferably 0.4-0.45 g / L, more preferably 0.43 g / L.
[0048] The mass concentration of the disperse black dye in the disperse black dye solution is preferably 0.6-40 g / L, more preferably 0.5-35 g / L, further preferably 0.5-20 g / L, and 0.5 g / L in the examples; and the mass concentration of the dispersant is preferably 0.4-0.45 g / L, more preferably 0.43 g / L.
[0049] The mass concentration of the disperse yellow dye in the disperse yellow dye solution is preferably 0.6-40 g / L, more preferably 2.5-35 g / L, further preferably 3.5-20 g / L, and 4.5 g / L in the examples; and the mass concentration of the dispersant is preferably 0.4-0.45 g / L, more preferably 0.43 g / L.
[0050] In the present application, the inkjet printing preferably comprises: laying the pretreated blended fabric on a printing conveyor belt, and using multiple nozzles for inkjet printing. In the present application, the pretreated blended fabric preferably enters a cloth feeding device and is then laid on the printing conveyor belt. The number of nozzles is preferably 6. The speed of the conveyor belt is preferably 1.0-3.0 m / min, more preferably 1.5-2.5 m / min.
[0051] In the present application, the conditions of the inkjet printing preferably comprise: the voltage is preferably 8-17 V, more preferably 10-15 V; the pressure of the nozzle is preferably 0.1-0.2 MPa, and the ink ejection amount is preferably 0.5-2.0 kg / m 2 , more preferably 1-1.5 kg / m 2 . By controlling the conditions of the inkjet printing, the present application can well improve the dye penetration, uniformity and flatness of the printed fabric obtained by digital inkjet printing, and obtain a printed fabric with clear patterns and uniform dyeing.
[0052] After obtaining the inkjet printing treated fabric, the inkjet printing treated fabric is subjected to a steaming fixation treatment to obtain a steaming fixation treated blended fabric. In the present application, the steaming fixation is preferably carried out in a steaming box. The steaming box is an intermittent drying and fixation device. The steaming fixation is preferably carried out by using water vapor for drying and fixation. The temperature of the steaming fixation is preferably 102-105 DEG C, and the time is preferably 8-12 min.
[0053] After obtaining the steaming fixation treated blended fabric, the steaming fixation treated blended fabric is subjected to a post-treatment. In the present application, the post-treatment preferably comprises sequentially carrying out a soaping and a washing. The present application does not have special requirements for the specific implementation process of the soaping and the washing.
[0054] The digital printing method for the blended fabric of real silk and polylactic acid provided by the present application solves the problems of polylactic acid, such as not being resistant to high temperature (130 DEG C), not being resistant to alkali, and having a large decrease in strength when the fabric is subjected to high temperature or alkali, by using a steam drying and fixation method.
[0055] Meanwhile, the digital printing method provided by the present application simplifies the printing process and reduces energy consumption, and optimizes the printing from multiple steps to one-step digital printing, so that the process is simple, the flow is short, the equipment used is less, and the energy consumption is reduced.
[0056] The printed fabric obtained by the digital printing method provided by the present application has clear patterns, high printing quality, good dye penetration, uniformity and flatness, and less printing wastewater, and is friendly to the environment.
[0057] The printed fabric obtained by the digital printing method provided by the present application has the following color fastness indexes: 4-5 for original change, 4-5 for white staining, 3-4 for dry rubbing, 3-4 for wet rubbing, and 3 for sunlight, all of which meet the standard requirements (GB / T3920-2008).
[0058] In order to further illustrate the present application, the technical solutions provided by the present application are described in detail below in conjunction with examples, but they should not be understood as limiting the scope of protection of the present application.
[0059] Example 1
[0060] The present example provides a digital printing method for a blended fabric of real silk and polylactic acid. The blended fabric of real silk and polylactic acid is woven from warp yarns and weft yarns. The warp yarns are formed of real silk fibers, and the specification of the warp yarns is 40S. The weft yarns are formed of real silk fibers and polylactic acid fibers, and the specification of the weft yarns is 75D / 72F. The mass content of the real silk fibers in the blended fabric of real silk and polylactic acid is 65%, and the mass content of the polylactic acid fibers is 35%. The method specifically comprises the following steps:
[0061] (1) Take 1100g of Anorthica Anorette M Acid Orange dye, 650g of Anorthica Anorette M Acid Blue dye, and 360g of Anorthica Anorette M Acid Red dye, and then respectively carry out the material;
[0062] (2) Dissolve the acid dyes weighed in step (1) in water respectively to obtain dye solutions, and then dissolve the Shanghai Daxiang fixing agent and urea in the dye solutions to obtain an acid dye mixture, wherein the amount of the fixing agent is 20g, and the amount of urea is 800g;
[0063] In the obtained Anorthica Anorette M Acid Orange dye solution, the mass concentration of Anorthica Anorette M Acid Orange dye is 27.5g / L, the mass concentration of the fixing agent is 0.50g / L, and the mass concentration of urea is 20g / L;
[0064] In the obtained Anorthica Anorette M Acid Blue dye solution, the mass concentration of Anorthica Anorette M Acid Blue dye is 16.25g / L, the mass concentration of the fixing agent is 0.50g / L, and the mass concentration of urea is 20g / L;
[0065] In the obtained Anorthica Anorette M Acid Red dye solution, the mass concentration of Anorthica Anorette M Acid Red dye is 9.00g / L, the mass concentration of the fixing agent is 0.50g / L, and the mass concentration of urea is 20g / L;
[0066] (3) Take 600g of Deseta ETD Red dye, 15g / L of Deseta ETD Black dye, 0.5g / L of Deseta ETD Yellow dye, and 4.5g / L, and then respectively carry out the material;
[0067] (4) Dissolve the disperse dyes weighed in step (3) in water respectively to obtain dye solutions, and then dissolve the Daxiang Company dispersant in the dye solutions to obtain a disperse dye mixture;
[0068] In the obtained Deseta ETD Red dye solution, the mass concentration of Deseta ETD Red dye is 15g / L, and the mass concentration of the dispersant is 0.43g / L;
[0069] In the obtained Deseta ETD Black dye, the mass concentration of Deseta ETD Black dye is 0.5g / L, and the mass concentration of the dispersant is 0.43g / L;
[0070] In the obtained Deseta ETD Yellow dye, the mass concentration of Deseta ETD Yellow dye is 4.5g / L, and the mass concentration of the dispersant is 0.43g / L;
[0071] (5) The temperature of the acid dye solution and the disperse dye solution obtained in steps (2) and (4) is 20-25℃
[0072] (6) the silk and polylactic acid blended fabric with a picking effect of 8 cm / 30 min and a fabric surface pH value of 7 (neutral) after the pretreatment is fed into a fabric feeding device and evenly laid on a printing conveying belt, and the inkjet printing conditions include: a voltage of 15 V, a nozzle pressure of 0.10 MPa, and an ink spraying amount of 1.0 kg / m 2 Each nozzle (6 nozzles, each nozzle sprays a dye solution of one color) sprays ink, and the inkjet printing is completed, and the speed is 3.0 m / min;
[0073] (7) the fabric printed in step (6) is fed into a steaming box, and steaming and color fixing are performed at a temperature of 102 ℃ for 11±1 min;
[0074] (8) the fabric after the steaming and color fixing in step (7) is subjected to soaping and washing, and the printing is completed. Figure 1 A physical map of the printed product prepared in the embodiment is shown in the following figure.
[0075] The color fastness indexes of the printed fabric obtained by the digital printing method of the embodiment are as follows: 4 for original change, 4 for white staining, 3-4 for dry rubbing, 3-4 for wet rubbing, and 3 for sunlight exposure, all of which meet the standard requirements (GB / T3920-2008).
[0076] As can be seen from the above embodiments, the digital printing method provided by the application includes pretreatment, inkjet printing, steaming and color fixing, soaping and washing, and has simple procedures, a short process, less equipment, reduced energy consumption, clear patterns, high printing quality, and high levels of dye penetration, uniformity and flatness of the printed fabric. The printing waste water is less, and the method is friendly to the environment.
[0077] Meanwhile, the digital printing method provided by the application has a low drying and color fixing temperature, which avoids the problem of strength reduction of polylactic acid fibers caused by overheat drying.
[0078] Although the above embodiments have made a detailed description of the application, it is only a part of the embodiments of the application, not all the embodiments, and other embodiments can be obtained according to the embodiments without creativity, which all belong to the protection scope of the application.
Claims
1. A digital printing method for a silk and polylactic acid blended fabric, characterized in that: The following steps are involved: pre-treating the silk and polylactic acid blended fabric to obtain a pre-treated blended fabric; The pre-treated blended fabric is subjected to inkjet printing, wherein the ink used in the inkjet printing is a dye solution, wherein the dye solution includes an acid dye solution and a disperse dye solution, and the acid dye solution and the disperse dye solution are respectively sprayed from different inkjet printing nozzles to obtain an inkjet printed blended fabric; performing a steaming color-fixing treatment on the inkjet printed fabric to obtain a steaming color-fixing treated blended fabric; The steam-fixed blended fabric is post-treated.
2. The digital printing method according to claim 1, characterized in that: The inkjet printing conditions include: voltage of 8-17V, nozzle pressure of 0.1-0.2MPa, and ink jetting volume of 0.5-2.0kg / m 2 .
3. The digital printing method according to claim 1, characterized in that: The temperature of the dye solution is 20-25°C.
4. The digital printing method according to claim 1, characterized in that: The acid dye solution comprises an acid dye, a fixing agent, urea and water; In the acid dye solution, the mass concentration of the acid dye is 0.5-35 g / L, the mass concentration of the color fixing agent is 0.49-0.51 g / L, and the mass concentration of the urea is 19-21 g / L.
5. The digital printing method according to claim 1, characterized in that: The disperse dye solution comprises disperse dye, dispersant and water; In the disperse dye solution, the mass concentration of the disperse dye is 0.6-40 g / L, and the mass concentration of the dispersant is 0.4-0.45 g / L.
6. The digital printing method according to claim 1 or 2, characterized in that: The inkjet printing comprises: laying the pre-treated blended fabric on a printing conveyor belt, and performing inkjet printing using a plurality of nozzles; the speed of the conveyor belt is 1.0-3.0 m / min.
7. The digital printing method according to claim 1, characterized in that: The steaming and fixing is carried out in a steam box; the temperature of the steaming and fixing is 102-105° C., and the time is 8-12 minutes.
8. The digital printing method according to claim 1, characterized in that: The silk and polylactic acid blended fabric is woven from warp yarns and weft yarns, wherein the warp yarns are formed from silk fibers, and the specification of the warp yarns is 40S; the weft yarns are formed from silk fibers and polylactic acid fibers, and the specification of the weft yarns is 75D / 72F.
9. The digital printing method according to claim 1 or 8, characterized in that: The mass content of the silk fiber in the silk and polylactic acid blended fabric is 60-65%, and the mass content of the polylactic acid fiber is 35-40%.
10. The digital printing method according to claim 1, characterized in that: The capillary effect of the pre-treated blended fabric is ≥8cm / 30min, and the pH value of the fabric surface is 6.5-7.5; The post-treatment includes soap boiling and water washing in sequence.