Trouble and solution in ink printing of woven bag printing machine
Dezhou Huarui Machinery Equipment Co., Ltd. is a leading manufacturer specializing in woven bag packaging equipment, with an annual production capacity exceeding 10,000 units of woven bag processing machines. Their products are exported to over 20 countries and regions worldwide. The company has evolved from producing basic cutting machines into a modern enterprise that offers full machine assembly, parts manufacturing, strict quality control, and comprehensive after-sales support.
One common issue encountered during the printing process is print adhesion, where printed layers stick together, affecting the final product’s quality. This problem can be caused by several factors. First, if the stacked printed bags are too heavy, it may cause them to adhere during the printing or rewinding process. Second, if the printing speed is too fast, excessive tension can lead to tight winding, causing the layers to stick. Third, improper positioning of the drying device or mechanical issues during printing can also result in poor adhesion. Fourth, if the ink dries too slowly or lacks good drying properties, it may not set properly, increasing the chance of sticking. Fifth, high ambient temperatures or incomplete cooling can prevent the ink from setting correctly, especially if the ink is not heat-resistant. Lastly, excessive ink seepage through the back of the material can also contribute to adhesion problems.
To resolve these issues, it's important to manage the stacking height of printed materials to avoid excessive weight pressure. Adjusting the printing speed and controlling the pulling force will help ensure smooth rewinding. It's also essential to check the drying system and adjust the angle of the drying device to ensure optimal drying performance. Improving the ink’s drying characteristics is another key step—this can be done by adding original ink to increase viscosity, using a low-molecular-weight, high-volatility diluent, or incorporating a specialized diluent from the ink manufacturer (such as a mixture of 90% ethyl ester and 10% ethanol). Controlling the workshop temperature is equally important; reducing the temperature through ventilation or air circulation can prevent overheating. Using heat-resistant ink is recommended for better performance under high-temperature conditions.
Dezhou Huarui Machinery Equipment Co., Ltd. offers a wide range of machinery, including single sewing machines, double sewing machines, woven bag folding machines, slitting machines, non-woven printing machines, cutting machines, and more. Whether you need equipment for packaging, printing, or sewing, they provide reliable and efficient solutions tailored to meet your production needs. For more information, visit their official website.
Main Rail Anchor Types
* 50E3 Rail Anchors
Reference project: SBB railroad network
Technical parameter:
Material: Alloy spring steel
Product properties: Hardness HB300-380
Longitudinal resistance＞7KN to EN 13481-3
Coating: Plain
*85CP Rail Anchors
Reference project: Chile in 2018
Material: Alloy spring steel
Product properties: Hardness HB300-380
Coating: Plain
* 115RE Rail Anchors
Reference project: Chile in 2018
Material: 65Mn, 60si2Mn
Product properties: Hardness HB290-330
Tensile strength:980-1114N/mm2
Coating: Plain
* BS80A Rail Anchors
Reference project: Peru
Material: 65Mn,60Si2Mn,etc.
Product properties: Hardness HB290-330
Tensile strength:980-1114N/mm2
Coating: Plain
Testing facilities
* Special testing tools to test dimensions;
* Testing machines for testing the mechanical properties:
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