PROBLEM TO BE SOLVED: To provide an improved rice ball wrapping material which enables an exterior film to be smoothly divided into two parts left and right along a separating part for unsealing by a flap for unsealing when unsealed and further enables the division into two parts to be more smoothly carried out.SOLUTION: The rice ball wrapping material is formed into a bag shape through the heat welding of long-side seal areas X and short-side seal areas Y in a state where a sheet-like processed product 3 is interposed between the exterior film 1 with the separating part 4 for unsealing and an interior film 2 allowing two film pieces 2-2, 2-2 separated into two parts left and right corresponding to the division into two parts left and right to be overlappingly joined to the exterior film 1. The exterior film 1 is integrally provided with the flap 5 for unsealing at one short side 1b. In addition the exterior film 1 has guide cutting lines 6, 7 with cutting lengths L1, L2 which each serves as a start point for tearing that guides the tearing to the separating part 4 for unsealing when torn and separated by the flap 5 for unsealing at the protruded base parts at both sides of the flap 5 for unsealing, respectively.COPYRIGHT: (C)2009,JPO&INPIT【課題】開封するときに、開封用摘み片によって速やかに開封用分断部に沿わせて外装フィルムを左右に二分割することができ、しかも、その2分割がより一層速やかに行うことができるように改良されたおにぎり用包装材を提供する。【解決手段】開封用分断部4を備える外装フィルム1と、この外装フィルム1に左右への二分割に対応して左右に分離される2枚のフィルム片2-2,2-2を重ね接合している内装フィルム2との間に、シート状加工品3を挟んで長辺シール領域Xと短辺シール領域Yとの熱溶着により袋状に形成される。外装フィルム1は、一方の短辺側端1b側に開封用摘み片5を一体に備え、さらに、開封用摘み片5により引き裂き分断されるときに、その引き裂きを開封用分断部4へと導く引き裂き起点となる誘導切込み線6,7を、切込み長さL1,L2にて開封用摘み片5の両側の突出基部にそれぞれ備えている。【選択図】図2
