Bidirectional straight-tear resin is a specialized modified polyolefin resin. Through a unique molecular structure and formulation design, it enables the film to tear in a straight line both horizontally and vertically. The tear is clean and straight, without skewing or stringing, allowing for easy opening without the need for tear notches or serrated edges. It combines excellent heat sealability, flexibility, and processability, and can be blended with substrates such as PE and PP without affecting the film’s transparency, strength, or lamination and printing properties. Widely used in food packaging, pharmaceutical packaging, and small-packaging applications for daily chemicals, it significantly enhances packaging convenience and product quality. With stable processing and flexible addition ratios, it serves as a core functional material for achieving bidirectional easy-tear properties and improving the packaging experience.