a pouch formed of a laminate sheet for containing therein a content such as retort food . both lateral sides of front and rear walls of the pouch are heat sealed with each other , and top opening is also heat sealed together to sealingly maintain the content . the laminate sheet has at least two heat sealable plastic layers at an inner side of the pouch . at at least one of the heat sealable plastic layers , a surface roughened zones are provided at both front and wear walls . the zones are superposed together and extend along a tearing direction staring from a notch formed at one side heat sealed portion .