Tray sealing film tih hian ei tur dahna tray-a airtight seal siam tura siam, packaging material chi khat a kawk a ni. He film hi polyethylene, polypropylene, emaw thil dang flexible tak tak, barrier property tha tak tak pe thei thil atanga siam a ni tlangpui. Protective layer angin a thawk a, ei tur chu pawn lam bawlhhlawh nen a inzawm loh nan a veng a, chutih rualin a thar leh a awm reng theih nan a veng bawk.