Common troubleshooting in the use of heat sealing machines

Heat sealing machine is a common packaging machinery widely used in industries such as food, medicine, and chemical. The working principle of a heat sealing machine is to use heat and pressure to fuse plastic film or packaging materials together, thereby forming a sealed packaging. In actual use, users may encounter some problems. The following will explain common troubleshooting methods for using the heat sealing machine.

1. The heat seal is not firm enough

One of the most common difficult problems in the use of heat sealing machines is the lack of firm heat sealing. This may be due to the following reasons:

• Low temperature:Insufficient heat sealing temperature prevents the packaging material from completely melting, resulting in weak heat sealing.
• Insufficient pressure:Insufficient heat sealing pressure prevents tight contact between packaging materials, resulting in unstable heat sealing.
• Short heat sealing time:The heat sealing time is too short, and the packaging material is not completely melted, resulting in weak heat sealing.
• The packaging material is not suitable for:Different packaging materials require different heat sealing temperatures, pressures, and times, and using inappropriate packaging materials can also lead to weak heat sealing.
• Thermal sealing machine malfunction:The failure of the heat sealing machine itself, such as damage to the heating element or malfunction of the pressure control system, can also lead to unstable heat sealing.

resolvent:

• Adjust the heat sealing temperature:Adjust the heat sealing temperature according to the characteristics of the packaging material to ensure optimal melting state.
• Adjust the heat sealing pressure:Adjust the heat sealing pressure according to the thickness and heat sealing area of the packaging material to ensure a tight contact between the packaging materials.
• Adjust the heat sealing time:Adjust the heat sealing time based on the characteristics of the packaging material and the heat sealing temperature to ensure complete melting of the packaging material.
• Replace with suitable packaging materials:Choose packaging materials suitable for heat sealing, such as polyethylene, polypropylene, etc.
• Maintenance of heat sealing machine:Check if the heat sealing machine is working properly and repair or replace damaged parts if necessary.

2. Air leakage in the heat sealing machine

Air leakage in the heat sealing machine refers to gas leakage in the heat sealing area, resulting in unsealed packaging and affecting product quality. This may be due to the following reasons:

• Wear of heat sealing mold:After prolonged use, the heat sealing mold will experience wear and tear, leading to poor sealing and air leakage.
• Uneven thickness of heat sealing material:Uneven thickness of packaging materials leads to loose heat sealing areas and air leakage.
• Insufficient air pressure in the heat sealing machine:The air pressure of the heat sealing machine is insufficient to form sufficient sealing force, resulting in air leakage.
• Damaged heat sealed seal:The seal of the heat seal is damaged, resulting in inadequate sealing of the heat seal area and air leakage.

resolvent:

• Replace the heat sealing mold:Replace worn heat sealing molds to ensure good sealing performance.
• Adjust the thickness of packaging materials:Adjust the thickness of the packaging material to ensure tight contact in the heat sealed area.
• Adjust the air pressure of the heat sealing machine:Adjust the air pressure of the heat sealing machine to ensure sufficient sealing force is formed.
• Replace the sealing strip:Replace the damaged heat sealing seal to ensure good sealing performance in the heat sealing area.

3. Excessive noise from the heat sealing machine

Excessive noise from the heat sealing machine is one of the common problems encountered during its use. This may be due to the following reasons:

• Mechanical component wear:After prolonged use, the mechanical components of the heat sealing machine will experience wear and tear, resulting in noise during operation.
• High air pressure:Excessive air pressure in the heat sealing machine can cause noise during the operation of pneumatic components.
• Loose hot sealing mold:The looseness of the heat sealing mold causes vibration during operation, resulting in noise.
• The installation of the heat sealing machine is not firm:The installation of the heat sealing machine is not firm, resulting in vibration and noise during operation.

resolvent:

• Replace worn parts:Replace worn mechanical components such as bearings, gears, etc. to reduce noise.
• Adjust air pressure:Adjust the air pressure of the heat sealing machine to reduce the operating noise of pneumatic components.
• Tighten the heat sealing mold:Tighten loose heat sealing molds to reduce vibration and noise.
• Reinstall the heat sealing machine:Reinstall the heat sealing machine to ensure a secure installation and reduce vibration and noise.

4. Uneven heating of the heat sealing machine

Uneven heating of the heat sealing machine can lead to significant temperature differences in the heat sealing area, affecting the quality of the heat sealing. This may be due to the following reasons:

• Heating element damage:The heating element is damaged or aged, resulting in a decrease in heating power and uneven heating.
• Incorrect position of heating element:The heating element is not positioned correctly, resulting in uneven heat distribution and uneven heating.
• Poor contact of heat sealing mold:Poor contact of the heat sealing mold leads to uneven heat transfer, resulting in uneven heating.

resolvent:

• Replace heating element:Replace damaged or aged heating elements to ensure normal heating power.
• Adjust the position of the heating element:Adjust the position of the heating element to ensure even heat distribution.
• Clean the heat sealing mold:Clean the heat sealing mold to ensure good contact between the mold and packaging materials.

5. Fault in the automatic control system of the heat sealing machine

A malfunction in the automatic control system of the heat sealing machine can result in the machine being unable to operate normally. This may be due to the following reasons:

• Control system software malfunction:The control system software has malfunctioned, causing the program to fail to execute properly.
• Hardware malfunction of control system:The hardware of the control system has malfunctioned, such as damaged sensors, broken circuits, etc., causing the system to malfunction.
• Control system parameter setting error:The parameter settings of the control system are incorrect, resulting in the inability of the heat sealing machine to operate normally.

resolvent:

• Update control system software:Update the control system software and fix software malfunctions.
• Check the hardware of the control system:Check the hardware of the control system and repair any hardware malfunctions.
• Adjust control system parameters:Adjust the control system parameters to ensure that the parameter settings are correct.

6. Operation error of heat sealing machine

Operating errors in the heat sealing machine can also lead to some problems, such as:

• Incorrect placement of packaging materials:Incorrect placement of packaging materials can lead to loose heat sealing areas, resulting in air leakage or unstable heat sealing.
• Parameter setting error of heat sealing machine:The parameter settings of the heat sealing machine are incorrect, such as temperature, pressure, time, etc., resulting in unqualified heat sealing quality.
• The operation process is not standardized:The operation process is not standardized, such as misaligned packaging materials, preheating of the heat sealing machine, etc., resulting in unqualified heat sealing quality.

resolvent:

• Strictly follow the operating procedures:Strictly follow the operating procedures to ensure standardized operation.
• Carefully check if the packaging materials are placed correctly:Carefully check whether the packaging materials are placed correctly and ensure that the heat sealing area is in close contact.
• Select appropriate parameters based on the characteristics of packaging materials:Select appropriate heat sealing parameters based on the characteristics of the packaging material, such as temperature, pressure, time, etc.

7. Improper cleaning and maintenance of the heat sealing machine

Improper cleaning and maintenance of the heat sealing machine can lead to a decrease in its performance and affect its service life. This may be due to the following reasons:

• Hot sealing molds are not regularly cleaned:The heat sealing mold is not cleaned regularly, resulting in residual dirt on the surface of the mold, which affects the quality of heat sealing.
• The interior of the heat sealing machine is not regularly cleaned:The internal cleaning of the heat sealing machine is not carried out regularly, resulting in dust accumulation inside and affecting the operating efficiency of the heat sealing machine.
• The lubricating oil of the heat sealing machine is not regularly replaced:The lubricating oil of the heat sealing machine was not replaced regularly, resulting in the deterioration of the lubricating oil and affecting the operation of the mechanical components of the heat sealing machine.

resolvent:

• Regularly clean the heat sealing mold:Regularly clean the heat sealing mold, remove dirt from the mold surface, and ensure that the mold surface is clean.
• Regularly clean the interior of the heat sealing machine:Regularly clean the interior of the heat sealing machine, remove internal dust accumulation, and ensure that the interior of the heat sealing machine is clean.
• Regularly replace lubricating oil:Regularly replace the lubricating oil of the heat sealing machine, ensure the cleanliness of the lubricating oil, and ensure the normal operation of the mechanical components of the heat sealing machine.

It is normal for problems to occur during the use of the heat sealing machine. As long as users promptly investigate the cause and take corresponding solutions, they can ensure the normal operation of the heat sealing machine and improve production efficiency. When choosing a heat sealing machine, it is recommended to choose a reputable manufacturer and understand their after-sales service. Jiangsu Stek Intelligent Manufacturing Co., Ltd. is a professional intelligent manufacturing enterprise that provides intelligent manufacturing equipment such as automatic palletizing conveyor lines, automatic packaging lines, automatic transportation lines, automatic loading and unloading, industrial robots, robotic arms, palletizing machines, etc., and provides comprehensive after-sales service, which is trustworthy.