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Q: What should I do if the Large Format Sublimation Printing image appears ghosted, blurry, or has unclear edges, giving the impression of ‘double printing’ ?
Common causes:
Material displacement during the transfer process: Slight sliding of the transfer paper or fabric during the pressing or lowering of the heat press can cause ghosting.
Foreign objects on the surface: Residual fibers, dust, or adhesive residue on the transfer paper, fabric, or heat plate surface.
High elasticity or extensibility of the material: The material is lifted or rebounds during the heat pressing process.
Excessive pressure: Causes the material to be “sucked” onto the heat plate.
Too fast lowering or lifting speed: Especially during flatbed heat pressing, lifting too quickly can easily lift the transfer paper, and the paper re-attaches before it is completely detached.
Solutions:
Use high-temperature resistant tape to fix the four corners of the transfer paper to prevent displacement. Check and clean the heat plate, fabric, and transfer paper surface before transfer. Reduce the pressing pressure to avoid excessive adhesion. Perform small sample tests on elastic materials to determine the parameters. Appropriately reduce the lifting speed, and if necessary, add a separation paper between the fabric and the pressing pad.
Q: What if the sublimation is incomplete, the colors are light, grayish, or some areas are not transferred?
Common causes:
Insufficient temperature or time: Insufficient heat prevents the ink from fully sublimating and penetrating the fibers.
Uneven heating of the heat plate: After long-term use, there are significant temperature differences in different parts of the heat plate.
Incompatible materials: The fabric coating or composition is not suitable for dye sublimation fabric printing.
Solutions:
Regularly check the heat plate condition, and replace or calibrate it if necessary. Ensure the fabric has sufficient polyester content or a suitable coating for Large Format Sublimation Printing.
Q: What if the color darkens, changes color, or watermarks appear after heat pressing?
Common causes:
Moisture problems: The transfer paper, fabric, or pressing pad is damp, and the moisture interferes at high temperatures.
The pressing pad has not been dried for a long time: Repeated use after absorbing water is most likely to cause watermarks.
High environmental humidity: Especially common during the rainy season in southern regions.
Solutions:
Preheat the pressing pad before transfer to evaporate internal moisture. Store the printed paper and the fabric to be transferred in a dry environment. In high-humidity environments, consider increasing the preheating time or replacing the drying pads.
