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30 Textiles Printing Defects

Faizan 19,Oct 2016 0
30-textile-printing-defects

Nothing is perfect.  If you are running an industry and managing printing section, then all you need is to consider these defects that will distort the worth of your fabric. Here, we are listing some of the major textile printing defects to detect for setting a high quality standard for your textile industry.

 

  • Broken color pattern: It is generally created by colored yarn out of place on frame.
  • Flipped yarn: This defect looks like scratches due to the warp and weft yarns. The yarns have been turned upside down. The insufficient penetration of color paste is the main cause of this defect.
  • Blebbiness: Blebbiness is a printed surface which appears as rough as sharkskin. The main reason behind this defect is the unsuitability of color paste and uneven adhesion.
  • Bleeding: Bleeding is referred to motif blurs which results due to unclear outline design. The low viscosity of the color paste is also a secondary reason for this defect. The concentration of the dye stuff in the print paste is too high which results into the high amount of hygroscopic printing agent.
  • Staining during steaming: Stains are transferred when a poorly washed printing table is used. The printing cloth is piled up after insufficient drying or a part of the cloth touches another during steaming.
  • Uneven printing: Uneven printing refers to the uneven color tone horizontally at the same distance from each other. Poor squeegee and uneven squeegee cause this defect.
  • Slight touching: The pale spot on the motif is called slight touching. This occurs due to slow replenishment of color paste, uneven squeegee pressure, choosing a squeegee with inappropriate hardness, bad squeegee relay, and uneven surface of printing table, inappropriate viscosity of the color paste and inappropriate use of thickener.
  • Poorly adjusted screen: Disfigured designs and overlapping motifs are the results of poorly adjusted screen.
  • Double printing: Designs printed are a little off. Disfigured designs, poor engraving, poor cloth adhesion, are the cause of this problem.
  • Pressing paste by frame: Sometimes a frame mark appears in the printed area. This is because of poor belt drive and frame installation.
  • Pattern bending: When the print bends or is of different width in different areas.
  • Speck: Tiny dots are visible due to color stain. Non-dissolved dye stuff and impurities included in color are the main problem behind this.
  • Stain due to friction: This type of stains occurs when the motif is still wet and come into contact with some dry stuff.
  • Color smear/ color paste splash: Color can smear during printing. Such kind of splashes occur when the roller moves fast, the screen plate is mis-handled and low viscosity of color paste.
  • Extra hanging yarns: Stains that are made by extra hanging yarns on the cloth. This happens when the fabric is poorly knitted.
  • Listing: The color shade or depth of selvedges is different from that of the center. This happens due to poor bleaches, poor installation of a frame and squeegee, uneven squeegee pressure and inappropriate padding and color fixing.
  • End stitches stain: This kind of stains is created by sewing machine stitches. Tailors know this kind of stains best.
  • Drops: Condensed water is the main cause behind this defect. These stains are caused when the water is dropped on the wet printed fabric.
  • Doctor mark: Belt-like-stain appears vertical to the direction of roller printing
  • Crease mark: It differs from crease streak in that streak will probably appear for an entire roll. Crease mark appears where creases are caused by fabric folds in the finishing process. On napped fabric, final pressing may not be able to restore fabric or original condition. Often discoloration is a problem.
  • Poor discharge/ resist printing: Poor white discharge and color discharge are related with the poor conditions of printing paste, color paste and steaming.
  • Crack of print paste: You can see cracks appeared over the fabric. These cracks occur because poor treatment is carried out after printing or the viscosity of the color paste is inappropriate.
  • Rope mark modification: Rollers and rope may leave their mark on the printed fabric. This happens when the steaming temperature is too high or too low. There must be a regulation while setting the temperature for steaming the printing application.
  • Rope mark fading: This mark is occurred when the area that has touched rope or rollers during steaming has faded colors. This problem occurs particularly when steam is condensed in rope or rollers.
  • Clips and pin miss: Bad clips, poor guilder and unusual cloth width can lead to this defect. Such kind of marks remains appearing inside too.
  • Unprinted area: Some area in a motif is not printed. The reason is that a foreign matter has been built up in the screen mesh, or the color paste cannot adhere to the cloth. It occurs for example in printing a fabric with slobs or by fuzz balls in the printing paste. Imprint is created by touching insufficiently dried right side of the print.
  • Crack marks: Unprinted marks will appear when you stretch or bent the fabric. Poor penetration of color paste and low viscosity are the main reasons of this defect.
  • Moire: Moire patterns appear on printed designs. Screen mesh, the roulettes of routers, the line delineation pattern has to do with this phenomenon.
  • Defective register: Knitting repeat is a shift of one or more repeats of a printed pattern, colors and lines of the resulting printing overlap.
  • Color out: This defect occurs when your printing machine is running out of your color paste.

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