1. Blister molding can only produce products with relatively uniform wall thickness (generally chamfered at a slightly thinner point), and can not produce plastic products with widely different wall thicknesses.
2. The wall thickness of the plastic forming is generally in the range of 1 to 2 mm or thinner (the most commonly used thickness of the blister-packed sheet for small packaging is 0.15 to 0.25 mm)
3. The stretchability of plastic molded products is limited. The diameter of plastic molded plastic containers is not more than 1 in diameter and should not exceed 1.5 in extreme cases.
4. The dimensional accuracy of plastic forming is poor, and the relative error is generally more than one percent.
