An expandable and reusable plastic bag is utilized. The bag is preferably a T-shirt style bag or a drawstring style bag. In either version, at least one, or a combination of, techniques are used to make the bags. The techniques include use of perforations, heat seals and adhesives (permanent and/or peelable). The bags are used to carry goods, such as groceries from the store to the home. The bags can then be opened and expanded to become trash bags, fitting into a conventionally sized trash container. The bags are thus reusable and are intended to reduce landfill and litter by virtue of their double use.

Disclosed are example embodiments of a waste collection bag. The waste collection bag includes a body with an opening at one end. The waste collection bag also includes a plurality of compartments formed within said body. Each compartment is sized and shaped to receive a user's finger(s), thereby defining separate finger areas within the bag to facilitate gripping and manipulation of the bag. The compartments are formed by a sealed area extending partway up from a closed edge opposite the opening.

Thermoplastic bags with phased deformation patterns are described. In particular, one or more implementations comprise thermoplastic bags with ring rolling, SELFing, or other deformation patterns phased or aligned relative to the sides of the bags. The phased deformation patterns can allow for reducing or eliminating deformation patterns in areas of the thermoplastic bag in which side seals or other seals are formed. Additionally or alternatively, the phased deformation patterns can provide for zones that provide differing properties (e.g., functional or aesthetic). Such zones can vary aligned along a width of the thermoplastic bag and optionally also vary along a height of the thermoplastic bag. The differing zones can provide the thermoplastic bags with phased deformations that provide leak prevention, liquid containment, and other benefits.

A sheet lining of plastic material for construction waste collecting container wherein it presents an average surface roughness (Ra) between 0.5 and 10 micrometers. A concrete waste collecting container including an inner surface lined with a permanent sheet lining of plastic material. A method of managing a set of concrete waste collecting containers implemented by a central server, including: real-time monitoring of a position and a filled or unfilled status of the set of concrete waste collecting containers using a GNSS module and accelerometer of each collecting container.