Polyvinylidene chloride (pvdc)-based composite having core-shell structure and method for manufacturing same

A polyvinylidene chloride (PVDC)-based composite comprising:

• a core comprising a PVDC-based polymer;
• and
• a shell surrounding the core and comprising wax,
• wherein the wax is nano-sized particles, a particle size of the wax is 30 to 280 nm;
• the core is a spherical particle having a particle size of 150 to 350 μm;
• the core is a porous particle having a surface roughness of several μm or several tens of μm;
• and the wax has the particle size being able to enter grooves in a surface of the core or covers surfaces of the grooves.