1、 Heating system malfunction

1. Insufficient heating

   • phenomenonThe hot melt adhesive film did not melt, resulting in weak bonding.
   • reasonWhen compounding, the temperature is insufficient. For example, in an old-fashioned drum laminating machine, the temperature sensor is located in the core, while the heat transfer part is attached to the surface of the drum, resulting in fast heat dissipation. The actual temperature is lower than the displayed temperature.
   • treatment methodUse a thermometer to measure the surface temperature of the drum and ensure it reaches the recommended temperature before proceeding with bonding.

2. The heating system does not heat up

   • phenomenonThe heating system is not functioning properly, resulting in the inability to perform bonding.
   • reasonPoor or damaged contact of the heating tube or thermostat.
   • treatment methodCheck the connection between the heating tube and the thermostat, and replace them if damaged.

2、 Adhesive pressure issue

1. Uneven bonding pressure

   • phenomenonDuring the bonding process, there is a continuous deviation and uneven composite of the material strip.
   • reasonThe uneven pressure of the composite roller results in uneven resistance within the width of the material strip.
   • treatment methodAdjust the pressure of the composite roller to ensure even distribution of pressure.

2. Excessive or insufficient bonding pressure

   • phenomenonPoor bonding effect, such as weak adhesion or material deformation.
   • reasonImproper setting of fitting pressure, not adjusted according to material characteristics.
   • treatment methodAdjust the bonding pressure according to the material characteristics to ensure the bonding effect.

3、 Material handling issues

1. Material offset

   • phenomenonThe material deviates during the bonding process, resulting in uneven composite.

   • reasonThe composite pressure roller is uneven, the suction plate is not turned on during material feeding, the bottom feeding belt and the composite feeding belt are not in the same parallel scale position, and the tension is not turned on during feeding.

   • treatment method：

     • Check and adjust the composite pressing roller to ensure its flatness.
     • Open the suction plate and ensure that the material receives uniform traction and tension.
     • Adjust the position of the bottom feeding belt and the composite belt to ensure they are on the same parallel scale.
     • Open the tension during feeding to ensure that the material is pulled by tension.

2. Material wrinkling

   • phenomenonThe material wrinkles during the bonding process.
   • reasonExcessive material tension or good material extensibility.
   • treatment methodAdjust the feeding tension and try to use the minimum tension under natural feeding conditions.

4、 Equipment operation issues

1. Press the power button without any response

   • phenomenonThe device cannot start.
   • reasonPoor contact between the power socket and power cord or damage to the power supply.
   • treatment methodCheck the connection of the power socket and power cord, and replace them if damaged.

2. The vacuum cylinder does not descend

   • phenomenonThe vacuum cylinder cannot descend for fitting.
   • reasonAbnormal descent cylinder or poor sensor contact.
   • treatment methodCheck the connection between the descent cylinder and the sensor, and adjust or replace them if there are any abnormalities.

3. The operating speed of the vacuum cylinder is too fast or too slow

   • phenomenonThe operating speed of the vacuum cylinder does not meet the requirements.
   • reasonThe throttle valve installed on the corresponding cylinder has not been adjusted to the appropriate position.
   • treatment methodAdjust the position of the throttle valve again to ensure that the operating speed of the vacuum cylinder meets the requirements.

5、 Other faults

1. Open the adhesive after bonding

   • phenomenonAfter bonding, the material may experience adhesive cracking after a period of time.
   • reasonHot melt adhesive film is incompatible with composite materials or the bonding temperature is inappropriate.
   • treatment methodReplace the compatible hot melt adhesive film or adjust the bonding temperature.

2. Internal channel blockage of equipment

   • phenomenonPart or all of the equipment is not hot.
   • reasonInternal channel blockage or "short circuit" phenomenon.
   • treatment methodCheck the internal channels, clean blockages or repair the 'short circuit' section.