The present invention relates to an object comprising a sealing layer, wherein the sealing layer comprises a polyethylene comprising moieties derived from ethylene and moieties derived from an -olefin comprising 4 to 10 carbon atoms, the polyethylene having a density of 870 and 920 kg/m.sup.3, preferably of 890 and 910 kg/m.sup.3, as determined in accordance with ASTM D792 (2013), wherein the polyethylene has: a fraction of material that is eluted in analytical temperature rising elution fractionation (a-TREF) at a temperature 30.0 C. of 5.0 wt % and 15.0 wt %, preferably 7.5 wt % and 12.5 wt %, with regard to the total weight of the polyethylene; two distinct peaks in the a-TREF curve in the elution temperature range of between 50.0 and 90.0 C., wherein the elution temperature gap between the two peaks is 20.0 C., preferably 17.5 C.; and, an M.sub.w/M.sub.n ratio of 3.0, preferably 3.0 and 4.5, as determined in accordance with ASTM D6474 (2012). Such object exhibits a desirably low seal initiation temperature, and a desirably broad hot tack window.

The purpose of the present invention is to provide a sealant resin composition having excellent resistance to whitening during stretching, and good heat seal strength, as well as good heat seal strength after heat aging. The present invention relates to a sealant resin composition (X) including a 1-butene/ethylene copolymer (A) satisfying a specific requirement, and a propylene-based polymer (B), the resin composition satisfying the following requirements (X1) and (X1-2): requirement (X1): having a Shore D hardness measured in accordance with ASTM D2240 being in a range of 44 to 80; and requirement (X1-2): having a melt flow rate (MFR) measured at 230 C. and a load of 2.16 kg in accordance with ASTM D1238 being 0.1 to 100 g/10 min.