Resin blend

A pellet, comprising:

• a core including a first resin;
• and
• a shell including a second resin having a difference in melt viscosity from the first resin of 0.1 to 3000 pa*s at a shear rate of 100 to 1000 s−1 and a processing temperature of the pellet.

A method of preparing a resin article, comprising:

• (a) step for melting a blend of first and second resins to form a melt blend, wherein a melt viscosity difference between the first resin and the second resin is 0.1 to 3000 pa*s at a shear rate of 100 to 1000 s−1 and a processing temperature of the blend;
• and
• (b) step for processing the melt blend to form a layer comprising the second resin on a surface of a resulting product.

A method of preparing a resin article, comprising:

• melting a pellet comprising a core including a first resin and a shell including a second resin to form a melt, wherein a melt viscosity difference between the first and second resins is 0.1 to 3000 pa*s at a shear rate of 100 to 1000 s−1 and a processing temperature of the pellet;
• and
• processing the melt to form a layer comprising the second resin on a surface of a resulting product.

A resin blend for melt processing, comprising:

• a first resin;
• and
• a second resin having a lower melt viscosity than the first resin wherein the second resin is disposed between the first resin and an ambient air in response to a melting process.