A method that includes forming two opposing slots in a container that includes a closed lower portion, a middle portion adapted for storing contents, and a closeable open upper portion, and wherein the two opposing slots are formed the closeable upper portion of the container; printing identifying indicia regarding the stored contents on an outer surface of a strip of paper or strip of material similar to paper; depositing adhesive on opposing ends of an inner surface of the strip; looping the strip through the two opposing slots in the closeable upper portion of the container after the contents have been stored in the middle portion of the container; and closing the upper portion of the bag in a tamper-resistant manner by adhering the opposing ends of the inner surface of the strip to one another using the adhesive, wherein the upper portion of the bag cannot be reopened without removing the strip, wherein removing the strip damages the strip, and wherein the damage to the strip provides evidence of container tampering.

A fluid collection container includes a self-supporting, collapsible bag with a threaded cylindrical inlet ring or spout and a strainer removably seated within the ring. The strainer can separate a macroscopic solid object from a viscous liquid. The fluid collection container includes a rectangular prismatic box with the spout extending through and a threaded cap removably coupled to the spout. A method of draining automotive oil includes positioning the bag beneath an oil pan of an automobile, removing an oil plug from the automotive oil pan and allowing the oil plug to fall into the strainer; draining the automotive oil through the strainer into the bag; removing an oil filter from the automobile; removing the strainer from the inlet; inserting the oil filter; and screwing a threaded the cap onto the inlet.

A fluid collection container includes a self-supporting, collapsible bag with a threaded cylindrical inlet ring or spout and a strainer removably seated within the ring. The strainer can separate a macroscopic solid object from a viscous liquid. The fluid collection container includes a rectangular prismatic box with the spout extending through and a threaded cap removably coupled to the spout. A method of draining automotive oil includes positioning the bag beneath an oil pan of an automobile, removing an oil plug from the automotive oil pan and allowing the oil plug to fall into the strainer; draining the automotive oil through the strainer into the bag; removing an oil filter from the automobile; removing the strainer from the inlet; inserting the oil filter; and screwing a threaded the cap onto the inlet.

An embodiment includes a bag comprising mesh and film side walls and a reinforcing strip of film; wherein (a) the mesh side wall is sealed to opposing side edges of the film side wall; (b) the reinforcing strip of film is sealed to an upper portion of the mesh side wall and to the opposing side edges of the film side wall; (c) the film side wall has a bottom extension, which is monolithic with the film side wall, extending upwardly and sealed along a lateral extent of a bottom portion of the mesh side wall; (d) the film side wall is non-coplanar with a portion of the bottom extension; (e) another portion of the bottom extension is non-coplanar with the mesh side wall; and (f) a horizontal axis intersects the bottom portion of the film side wall and three portions of the bottom extension.

An embodiment includes a bag comprising mesh and film side walls and a reinforcing strip of film; wherein (a) the mesh side wall is sealed to opposing side edges of the film side wall; (b) the reinforcing strip of film is sealed to an upper portion of the mesh side wall and to the opposing side edges of the film side wall; (c) the film side wall has a bottom extension, which is monolithic with the film side wall, extending upwardly and sealed along a lateral extent of a bottom portion of the mesh side wall; (d) the film side wall is non-coplanar with a portion of the bottom extension; (e) another portion of the bottom extension is non-coplanar with the mesh side wall; and (f) a horizontal axis intersects the bottom portion of the film side wall and three portions of the bottom extension.

A bag making apparatus and a bag making method make bags. The bag has a first panel part and a first flap part formed by folding a first sheet part, and a second panel part and a second flap part formed by folding a second sheet part. The first and second panel parts face each other. The first and second flap parts are interposed between the first and second panel parts and face each other. An open edge is formed by folded edges of the first and second sheet parts. The bag further comprises adhesive located between the open edge and the engagement tool, interposed between the first and second flap parts and extending across the widths of the first and second sheet parts to peelably adhere the first and second flap parts to each other. Alternatively, the second sheet part may only consists of the second panel part.

A carry-on package bag includes a bag opening and two primary bag sheets opposite to each other. Top edges of the primary bag sheets collectively define the bag opening. Each primary bag sheet includes a first fold line, a first foldable sealing section below the first fold line, and a second foldable sealing section between the first fold line and the top edge. Each first foldable sealing section has at least one first carrying hole. Each second foldable sealing section has at least one second carrying hole symmetric with respect to the first carrying hole about the first fold line. The second foldable sealing sections are foldable along the first fold lines toward the same direction to be overlapping and stacked on the first foldable sealing sections so that the second carrying hole and the first carrying hole correspond to and communicate with each other.

A carry-on package bag includes a bag opening and two primary bag sheets opposite to each other. Top edges of the primary bag sheets collectively define the bag opening. Each primary bag sheet includes a first fold line, a first foldable sealing section below the first fold line, and a second foldable sealing section between the first fold line and the top edge. Each first foldable sealing section has at least one first carrying hole. Each second foldable sealing section has at least one second carrying hole symmetric with respect to the first carrying hole about the first fold line. The second foldable sealing sections are foldable along the first fold lines toward the same direction to be overlapping and stacked on the first foldable sealing sections so that the second carrying hole and the first carrying hole correspond to and communicate with each other.

A thermoplastic flexible package includes a first non-shrinkable panel, an opposing second non-shrinkable panel, a first shrinkable panel and an opposing a second shrinkable panel. The panels are connected longitudinally with panel seals. The first non-shrinkable panel and the second non-shrinkable panel each forms a gusset. A first seal connects the first shrinkable panel and the second shrinkable panel in the transverse direction at or near the upper edges. A second seal that opposes the first seal connects the first and second non-shrinkable panels and the first and shrinkable panels in the transverse direction at or near the lower edges.

A thermoplastic flexible package includes a first non-shrinkable panel, an opposing second non-shrinkable panel, a first shrinkable panel and an opposing a second shrinkable panel. The panels are connected longitudinally with panel seals. The first non-shrinkable panel and the second non-shrinkable panel each forms a gusset. A first seal connects the first shrinkable panel and the second shrinkable panel in the transverse direction at or near the upper edges. A second seal that opposes the first seal connects the first and second non-shrinkable panels and the first and shrinkable panels in the transverse direction at or near the lower edges.