Burnt-out polyester Portrait Printing Process

2010-02-18  来源:本站原创  分类:Industry  人气:183 

Keywords: textile, dyeing, printing and dyeing today's society, with the improvement of living standard of dress required from the original just to keep warm, covering its body has risen to demand a practical but also aesthetically, to reflect the wearer's demeanor temperament. Burnt-out fabric cotton fabric because of its unique style of sophisticated, low price Beishou many consumers. In recent years, various new styles of cotton woven fabrics are emerging market. I meet the market demands, has undertaken a variety of cotton fabrics in the burnt-out printing and polyester blended fabric surface, part of the production practice Burnt-out printing, now I pay the company on the cotton fabric to make a Burnt-out printing technology areas Introduction. First, production materials and equipment 1. Fabric: Tl50D (DTY network wire) / 150D (POY pre-processing of wire) * Tl50D (DTY) 20D (R cotton gum) 57 ~ 58 inches width, density 172 × 51 cotton woven fabric 2. Equipment: Flat Screen Printing Machine (Ruishibuse) bottomless steaming machines (from Korea) MK8 dyeing machine (Su Textile Factory) 3. Dyes and Chemicals: S-240 (Switzerland POLYGAL company) sulfuric acid (98%) (Shangyu Chemical) sodium alginate (Qingdao Chemical) BPS reactive dyes (Shanghai Wande Chemical) 2, process theory: cross-woven polyester fibers from the polyester interweaves with the cotton fiber, acid-based polyester, while the cotton fiber is a regenerated cellulose fiber, the concentrated acid occurs under high temperature acid catalyst to cellulose molecules in the glycoside bond hydrolysis into low molecular weight compounds, even carbon and easily by washing, so burnt-out printed cotton fabrics in the local printed on acid pulp, high temperature carbonization, then glue cotton fiber under the action of concentrated sulfuric acid, fiber rapid hydrolysis, and then by washing, the printing wash away parts of the hydrolysis of cellulose to form a burnt-out pattern (the polyester without injury), they formed a special style of burnt-out printing. Third, process (1) process: fabric dyeing scouring → → System → Network → draft description mixing play Mao → → → Printed → steaming in and finishing → washing → (b) process requirements 1. Refinement: (within the overflow dyeing machine) to remove pulp and oil technology: Soda l0g / L 133 scouring agent 10g / L temperature of l00 ℃ time 20min 2. Dye: cotton fabrics generally go through dyeing, dyeing carried out in the overflow dyeing machine. As noted in the different requirements can be polyester dyed the same color. Can also be dyed different colors, such as purple polyester, cotton, gold, by the burnt-out, the big purple hue in the yellow outline of the pattern formed, so the style is different from normal fabric printed fabric. The former general is to do printing burnt. The latter generally refers to doing a single burnt-out, through the bottom and the surface with color, pattern changes, to form a different special style. If a distributed / direct a bath, the process is as follows: 3. Description is issued: requirement of visual pattern, the general pattern is issued in accordance with conventional technology description, In case of thread around the empty white flower color around the stem, then the color blocks of white space between the stem and thread should be torn off and 4 ~ 6 Its purpose is to prevent acid pulp slurry and the white stem shop eat. [email protected]### Page ###@=================4. System network: In general, burnt-out color blocks of the network by 30 to 53 projects. Mesh is too low, will affect the pattern of the outline, and present too high, it will affect the penetration of paste. 5. Mixing: (1) The paste of choice: We mainly based on the rate into a paste, acid resistance, printing properties, storage stability, cost and other indicators of more than 10 suppliers paste additives tested and the sample, assessment of their combined effect, the final choice of Switzerland POLYGAL produced S-240 paste. However, the stability of the paste there are bad acid, acid slurry not keep the shortcomings, we adopted the acid slurry with with with the methods used to overcome its shortcomings. (2) of the original paste Preparation: Formula: S-240 paste l0% water, 90% of the operating methods: stirring the powder S-240 paste adding water Stir and set aside. (3) Physalis Modulation: Formula: sulfuric acid (98%) 3 ~ 5g 10% S-240 80g x synthesis l00 How water: ① the concentrated sulfuric acid slowly added to the water (note the rules to ensure safety). ② diluted sulfuric acid added to the mixing of the S-240 in the original paste, stir stand-by. ③ At the same time according to different patterns to control the thickness of paste. ④ According to different background color and pattern choices concentration of the acid liquor. ⑤ paste modulation (noted in fabric weaving style we choose to be BPS with 10 000 reactive dyes) formula: dye X g sodium alginate 60 urea 6 ~ l0 resist salt baking soda 1 ~ 1.5 0.5 ~ 3 100 paste water Yg synthesis In principle, the same general activity in the cotton on the process rather. 6. Printing: (Ruishibusai Company production) in order to ensure the flower style, outline clear printing machine squeegee speed and pressure should do the different adjustment patterns. To maintain a clear outline pattern. Drop cloth printing machine drying fabric should be as soon as possible after the steaming, place too long because once the printing machine drop cloth fabric cloth itself after the resurgence of inadequate or excessive drying, is apt to open infiltration, the phenomenon of bad break seriously affect the quality. 7. Steaming: (no end of steam box) (1) conditions: speed: 18 ~ 20m/min temperature: 105 ~ 110 ℃ Time: 8min (2) Note points: ① fabric can not stay too long in the cabinets ② steaming The most suitable temperature 105 ~ 110 ℃. High temperature, easy to produce carbon cloth (Coking) phenomenon, while the temperature is low, usually because of insufficient degree of vaporization of steam, water steam ones, easy to make the fabric produced the overall penetration phenomenon has seriously affected product quality. 8. Washing: (width washing machine on normal activity of printing process) 1 ~ 2 # of cold water to fully wash open oscillation → 2 ~ 3 # hot water (60 ~ 70 ℃ add Detergent) Open oscillation → 4 ~ 6 # hot water (90 ~ 100 ℃ small amount of detergent) to open oscillation → 7 ~ 8 # clean, cold water (add softener on request). 9. Setting: setting temperature 175 ~ 185 ℃ Speed 30m/[email protected]### page ###@=========== ======width according to the actual requirement 4, the conclusion after production practice shows that the burnt-out polyester interweave product unique, received by the market, to the plants bring good economic benefits, but must be strictly controlled process, to ensure the quality of production reflects the burnt-out fabric style. The acid paste selection, requires further efforts to make the process more rational, scientific, practical and mature. [1] Textile Dyeing and Finishing Process Press [2] Special printing Zhejiang Publishing House [3] printing in 2002 [4] He Zhongqin 1994 translation of the text printing Renditions transferred from: http://database.texnet.com. cn/db-technology/detail--2216.html

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