The principle of Heat Sealing Cover Tape's adhesion during the heating process mainly relies on the characteristics of the thermoplastic material. When the Heat Sealing Cover Tape and the materials to be sealed (such as plastic film, paper, etc.) are heated to a certain temperature under the action of the heating element, the thermoplastic material on the Heat Sealing Cover Tape begins to soften and enter a molten state.
In the molten state, the molecular chains of the thermoplastic material become active and begin to move and diffuse with each other. When Heat Sealing Cover Tape is in close contact with the material to be sealed, these active molecular chains will penetrate into the surface of the material to be sealed and interact with its molecular chains. This interaction involves the entanglement, diffusion and fusion of molecular chains, allowing the two materials to become tightly bound together at a microscopic level.
As heating continues, the molecular chains of the thermoplastic material in the molten state become more active, and the interaction with the material to be sealed gradually increases. When the temperature reaches the appropriate level, the entanglement and fusion between molecular chains reaches the maximum, forming a strong and tight bonding interface. At this time, the adhesion between the Heat Sealing Cover Tape and the material to be sealed is strong enough to achieve a reliable sealing effect.
In addition, the adhesion effect of Heat Sealing Cover Tape is also affected by many factors. For example, the material of Heat Sealing Cover Tape and the properties of the material to be sealed, heating temperature and time, pressure, etc. will all affect the adhesion effect. Therefore, when using Heat Sealing Cover Tape for sealing, it is necessary to select the appropriate Heat Sealing Cover Tape, heating temperature and time, and apply appropriate pressure according to specific material and process requirements to ensure the reliability and stability of the sealing effect. .
In short, the principle of Heat Sealing Cover Tape to achieve adhesion during the heating process is to utilize the molten state of the thermoplastic material to tightly combine with the material to be sealed through the entanglement, diffusion and fusion between molecular chains, thereby achieving a reliable sealing effect. .
