Common Problems And Causes In The Process Of Fabric Printing

< p > < strong > problem 1 < a href= "http://www.91se91.com/news/index_c.asp > > screen printing < /a > not allowed to flower < /strong > /p >

< p > definition: two or more colors of flower pattern, printed on the fabric after one or several colors of the pattern off or stacked, dislocation, not printed in the printing position, this phenomenon is called the flower is not allowed.

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< p > cause: < /p >

< p > 1. printing plate and printing machine or printing machine locator with the gap is too large.

When the locator on the printing plate is loose, the movement of the scraper and the intensity of the layout will make the printing plate offset, and the pattern can not be printed on the printing position.

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< p > 2.. When the printing plate is deformed and the screen is partially loosened on the plate, the pattern will move out of its original position.

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< p > 3. each printing plate of the same flower pattern has a large difference in wetness and humidity. The humidity is large, and the layout is more serious than that of loose or partial relaxation. When the scraper runs, the pattern of the page moves to the direction of force.

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< p > 4. during printing operation, the printed pieces or cloth were moved, so that the printed patterns were moved on the pad.

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When the screen tension is less than P > 5., when the temperature and humidity are affected, the layout of the screen is smaller or uneven.

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< p > < strong > problem two < a href= "http://www.91se91.com/news/index_c.asp" > osmotic /a > (diffusion, color) < /strong > /p >

< p > definition: the outline edge of one or several colors and patterns is extended outwards, and all edges or edges of the edge of the pattern are formed with the rough edges of the same color and color.

There are third colors in two different colors or adjacent ones, all of which are known as osmotic.

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< p > cause: < /p >

< p > 1. pigment printing pastes contain insufficient thickening agents or too much water. The viscosity of printing paste can not meet the requirements.

Because the flowing speed of printing pulp is faster, the flow pattern of the fabric is more flowing outside the edge of the pattern, resulting in the unclear outline of the pattern.

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< p > 2., when printing operation, scraper operation is slow, pressure is high, the amount of pulp is frequent, and the number of trips is frequent.

Because of the over load of the fabric, the color paste will permeate the pattern.

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< p > 3. when the pattern area is large and the fabric has a large amount of pulp, after printing for a long time, the humidity will increase and the pattern paste will spread easily.

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< p > 4. when the printing paste is prepared, the agitation is uneven or the printing paste is diluted directly with water, which will affect or destroy the stability of the printing paste in the emulsion state.

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< p > 5. when printing on synthetic fabric, synthetic fiber and natural fiber blended fabric or interwoven fabric, because the synthetic fiber has hydrophobicity, the printing paste is easily exuded to the pattern.

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< p > 6. the thin fabric with relatively sparse structure has less pulp absorption capacity, and is especially sensitive to pulp loading.

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< p > < strong > problem three exposure (dry version) < /strong > < /p >

< p > definition: < a href= "http://www.91se91.com/news/index_c.asp" > fabric < /a > the pattern does not get enough color paste, the color is light and unclear, revealing the phenomenon that the fabric's background color or fine pattern is broken down is called the bottom.

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< p > cause: < /p >

< p > 1. because of the distortion of the frame, the page is raised, leaving the fabric laid on the stage, so that some patterns are insufficient for the pulp.

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< p > 2. scraper runs faster, less pressure, less slurry, scraper rubber too hard, sharp edges, and so easy to make the pattern lack of pulp.

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< p > 3. pattern, part of mesh blockage or color paste too thick, will cause the color paste to pass through the net rate, and the pattern on the fabric is insufficient.

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< p > 4. thicker or thinly woven thick fabric, because the fabric surface is uneven, concave parts are easy to get insufficient pulp.

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< p > 5. local low lying on the pad or uneven printing pad will make the pattern on the fabric lack of pulp.

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< p > 6. serious wrinkles on the printing pad do not fully develop, or when the sheets are laid, they cause serious wrinkles. When printing, the inner sides and the raised wrinkles can not get the color paste, and reveal the fabric background.

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