Closure for container

1. A film for packaging a product, comprising

(a) a sealant layer and

(b) a protective layer, wherein

i) the sealant layer a polypropylene-based multilayer polyolefin film comprising an inner heat sealable sub-layer comprising polypropylene blended with at least two different polyethylene polymer resins each selected from the group consisting of an ethylene/octene copolymer, linear low density polyethylene, low density polyethylene, high density polyethylene, ethylene vinyl acetate, and ethylene methyl acrylate,

ii) the sealant layer does not fracture when exposed to a temperature in a range of about −20° C. to about 0° C.,

iii) the sealant layer does not melt or burst when exposed to a temperature of up to about 105° C.,

iv) the protective layer is included as part of the sealant layer, and

wherein the sealant layer is adapted to form a closure with a polypropylene substrate and wherein the inner heat sealable sub-layer is in contact with the polypropylene substrate.

2. The film of claim 1 , wherein the sealant layer is a polypropylene-based multilayer polyolefin layer comprising

(a) the inner heat sealable sub-layer, wherein the inner heat sealable sub-layer is formed from at least one propylene/ethylene copolymer having a melt flow rate in a range of about 0.5 g/10 min. to about 45 g/10 min. and at least two different polyethylene polymer resins at least one of which has a melt index in a range of about 0.50 g/10 min. to about 20 g/10 min.,

(b) a core sub-layer adjacent to the inner heat sealable sub-layer, the core sub-layer being formed from a polymeric material having a melting point of at least 71° C., and

(c) an outer skin sub-layer formed from at least one polyethylene polymer resin, the at least one polyethylene polymer resin having a melt index in a range of about 0.50 g/10 min. to about 20 g/10 min.,

wherein the protective layer is laminated to the outer skin sub-layer, the protective layer being formed from a polymer material that is temperature resistant at a temperature of up to about 105° C.

3. The film of claim 2 , wherein the propylene/ethylene copolymer contains an ethylene comonomer in an amount in a range of about 1% to about 8% by weight of the copolymer.

4. The film of claim 2 , wherein the propylene/ethylene copolymer has a melting temperature greater than 71° C.

5. The film of claim 2 , wherein the core sub-layer comprises a homopolymer polypropylene and a polyethylene polymer resin.

6. The film of claim 5 , wherein the homopolymer polypropylene has a melt flow rate in a range of about 0.5 g/10 min. to about 25 g/10 min.

7. The film of claim 5 , wherein the polyethylene polymer resin has a melt index in a range of about 0.50 g/10 min. to about 20 g/10 min.

8. The film of claim 2 , wherein the outer skin sub-layer includes a homopolymer polypropylene having a melt flow rate in a range of about 0.5 g/10 min. to about 25 g/10 min.

9. The film of claim 2 , wherein the protective layer is formed from a material selected from the group comprising of a polyethylene terephthalate film, a nylon film, a biaxially oriented polypropylene film, and a biaxially oriented propylene/ethylene copolymer film.