The present disclosure provides a container. In an embodiment, a flexible container (8) is provided and includes a first multilayer film (16) and a second multilayer film (18). Each multilayer film includes a seal layer. The multilayer films are arranged such that seal layers oppose each other and the second multilayer film is superimposed on the first multilayer film. The films are sealed along a common peripheral edge (20). The flexible container includes a fitment (10) having a base (12). The base (12) includes an ethylene/a-olefin multi-block copolymer. The flexible container includes a fitment seal (22) comprising the base located between the multilayer films. The base is sealed to each multilayer film at a portion of the common peripheral edge (20).

The invention relates to a method for welding two different polyolefin plastics using a primer, said primer containing at least one maleic anhydride graft polyolefin polymer. The invention also relates to correspondingly welded products.

The present disclosure provides a container. In an embodiment, a flexible container (8) is provided and includes a first multilayer film (16) and a second multilayer film (18). Each multilayer film includes a seal layer. The multilayer films are arranged such that seal layers oppose each other and the second multilayer film is superimposed on the first multilayer film. The films are sealed along a common peripheral edge (20). The flexible container includes a fitment (10) having a base (12). The base (12) includes an ethylene/a-olefin multi-block copolymer. The flexible container includes a fitment seal (22) comprising the base located between the multilayer films. The base is sealed to each multilayer film at a portion of the common peripheral edge (20).