A lamitube comprising: (a) a top layer comprising a resin composition comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE) having a melt flow index in the range of 0.5 - 1.2 g/10 minutes and a density in the range of 0.942 - 0.990 gm/cm 3; and (b) a second layer comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE), having a first surface and a second surface, whereby the meaning of the first and second surface of the second layer is given in the description, wherein the second layer is a heat sealable blocking layer comprising 3-11 layers and having a thickness in the range of 50 μm - 150 μm, comprising EVOH having a weight percentage in the range of 1 - 10% with respect to the lamitube; wherein the heat sealable blocking layer comprises a core layer, an outer layer, an inner layer, and at least one third adhesive layer; (c) at least one first adhesive layer present between the top layer and the first surface of second layer; (d) a third layer, wherein the third layer is a sealant layer comprising a resin composition comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE) having a melt flow index in the range of 0.5 - 1.2 g/10 minutes and a density in the range of 0.942 - 0.990 gm/cm 3; and (e) at least one second adhesive layer present between the third layer and the second surface of the second layer; wherein the lamitube has a density in the range of 0.942 - 0.990 gm/cm 3, has a tube ovality in the range of 1-8% measured using prefrabricated gauge method, and a thickness in the range of 170-400 μm. (a) a top layer comprising a resin composition comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE) having a melt flow index in the range of 0.5 - 1.2 g/10 minutes and a density in the range of 0.942 - 0.990 gm/cm 3; and (b) a second layer comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE), having a first surface and a second surface, whereby the meaning of the first and second surface of the second layer is given in the description, wherein the second layer is a heat sealable blocking layer comprising 3-11 layers and having a thickness in the range of 50 μm - 150 μm, comprising EVOH having a weight percentage in the range of 1 - 10% with respect to the lamitube; wherein the heat sealable blocking layer comprises a core layer, an outer layer, an inner layer, and at least one third adhesive layer; wherein the second layer is a heat sealable blocking layer comprising 3-11 layers and having a thickness in the range of 50 μm - 150 μm, comprising EVOH having a weight percentage in the range of 1 - 10% with respect to the lamitube; wherein the heat sealable blocking layer comprises a core layer, an outer layer, an inner layer, and at least one third adhesive layer; (c) at least one first adhesive layer present between the top layer and the first surface of second layer; (d) a third layer, wherein the third layer is a sealant layer comprising a resin composition comprising a combination of high-density polyethylene (HDPE) and medium density polyethylene (MDPE) having a melt flow index in the range of 0.5 - 1.2 g/10 minutes and a density in the range of 0.942 - 0.990 gm/cm 3; and (e) at least one second adhesive layer present between the third layer and the second surface of the second layer;