Bags made from reclaimed plastic material and methods for making same
Bags are formed from reclaimed plastic material. Each bag comprises two opposed sheet sections formed substantially entirely of a first polymer class, but also containing impurity particles of a different polymer class. The sheet sections comprise at least two distinct independent layers, with each layer in each sheet section being surface bonded to each adjacent layer in that sheet section. Although discontinuities in each layer resulting from the impurity particles create weak areas and in some cases apertures, the weakened portions of each layer are reinforced by portions of the other layer that are not weakened, since there is a minute likelihood that an impurity particle in one layer will be precisely co-located with an impurity particle in an adjacent layer. Thus, each layer reinforces the other layer to maintain structural integrity of the sheet section and of the bag. Methods for forming such bags are also described.
1. A bag formed at least in part from reclaimed plastic material, comprising:
two opposed sheet sections formed substantially entirely of a plastic of a first polymer class, the sheet sections sealed to one another along at least one edge thereof to define an enclosure between the sheet sections and having an opening defined by unsealed edge portions of the sheet sections;
each sheet section comprising at least two distinct independent layers formed substantially entirely of the plastic of the first polymer class;
each layer in each sheet section being surface bonded to each adjacent layer in that sheet section;
each layer containing impurity particles comprising plastic of a second polymer class different from the first polymer class, the impurity particles unmixed with the plastic of the first polymer class, the plastic forming each sheet section comprising up to 10 percent by weight of the impurity particles;
wherein the layers in each sheet section are separable from one another; and
wherein each layer in each sheet section is surface bonded to each adjacent layer in that sheet section by blocking.