Polyethylene resin foamed particle, and method for producing same

Polyethylene-based resin expanded beads comprising a base resin containing non-crosslinked linear low density polyethylene,

• said linear low density polyethylene being a copolymer of ethylene and an α-olefin having 8 carbon atoms and having a density of 0.922 g/cm3 or more and less than 0.935 g/cm3 and a melt flow rate of 0.8 g/10 min or more and 1.5 g/10 min or less, said base resin having a melting point (Tm) of 115° C. or more and 125° C. or less,
• said expanded beads having an average cell diameter of 50 μm or more and 220 μm or less,
• said expanded beads having a crystal structure that shows a first time DSC curve having an intrinsic melting peak which is intrinsic to the base resin and a high temperature melting peak which is located on a higher temperature side of the intrinsic melting peak, when said expanded beads are measured by heat flux differential scanning calorimetry in which a sample thereof is heated from 30° C. to 200° C. at a heating rate of 10° C./min,
• wherein a total heat of fusion (ΔH1) defined as a sum of a heat of fusion (ΔHi) of the intrinsic melting peak and a heat of fusion (ΔHh) of the high temperature melting peak is 110 J/g or more and 140 J/g or less.