Hot melt adhesive and uses thereof

A hot melt adhesive consisting essentially of:

• (a) about 20 to about 45 wt % of a polymer matrix prepared from a mixture of:
• (1) a first polymer system, wherein the first polymer system has (i) a viscosity of 3,000 to 8500 cps at 190° C., (ii) a DSC heat of fusion value of less than about 15 J/g measured at 10° C./min heating rate in accordance with ASTM D3418, (iii) a DSC melting peak at about 90-145° C. measured at 10° C./min heating rate in accordance with ASTM 3418, and (iv) propylene and ethylene (co)monomers;
• and
• (2) at second polymer system, wherein the second polymer system has (i) a melt index of about 15 to about 40 g/10 min at 2.16 kg, 190° C., ASTM D1238, (ii) a DSC heat of fusion value of less than about 15 J/g measured at 10° C./min heating rate in accordance with ASTM D3418, and (iii) propylene and ethylene (co)monomers;
• wherein the ratio of the first polymer system to the second polymer system ranges from about 1.8:1 to about 2.8:1;
• (b) about 30 to about 60 wt % of a tackifier;
• (c) about 10 to about 30 wt % of a wax or a plasticizer;
• and
• (d) about 0.1 to about 6 wt % of an additive selected from the group consisting of antioxidant, colorant, filler, UV absorber, UV inhibitor, pigment, compatible coating for packaging purpose, and mixtures thereof;
• wherein the adhesive has (i) a tan(δ) value of greater than about 30 at 140° C., 10 rad/s and (ii) a melt viscosity of about 2,000 to about 11,000 cps at 150° C., measured in accordance with ASTM 3236.