The raw materials used for the carrier belt are generally PC, PS, ABS and other materials, while the materials used for the upper cover belt are mostly pet. Due to the different chemical composition of the materials of the carrier belt and the upper cover belt, the melting point is also different, which will lead to incompatibility. Naturally, it is not suitable to adhere, resulting in cracking when the carrier belt and the upper cover belt are sealed.

In the final analysis, the reason for this is summarized in a simple sentence, which is caused by the incompatibility and mismatch between the carrier belt and the upper cover belt.

Solution to cracking of carrier belt and upper cover belt during sealing

In order to solve the cracking of the carrier belt and the upper cover belt during sealing, it is necessary to infiltrate chemical additives or combine with some chemical materials in the manufacturing of the upper belt. After simulating different external environments and conditions, the aging test shall be carried out at different times, and the unity of the two and the fixity during packaging shall be ensured after the test.

All carrier tapes produced by China Austria industry have undergone aging tests under different external environments and conditions, so there will be no cracking when the carrier tape and upper cover tape are sealed.