Abstract: A vented pouch arrangement is described which comprises: first and second opposed panel sections; a base gusset member; and, a gas filter arrangement oriented in one of the panel sections. The gusset member is preferably oriented between the panel sections; along ends thereof, to form a base by which the arrangement can be stood up during use. Preferably, the arrangement is provided with a rib and trough closure arrangement extending thereacross. In this manner, opening and reclosing the bag construction, for access to material therein, is facilitated. A method for formation of such a pouch arrangement, and methods of use, are also described.

Abstract: An improved flexible envelope for use as a mailing pouch or evidence preservation package. The envelope is constructed of a metalized polyester material which is characterized by an incision in a wall of said envelope which is sealed by a pressure sensitive adhesively sealed flap. After the flap is folded over and sealed, the user may open the envelope without the assistance of a knife or scissors due to notches at either end of the line of incision which initiate and guide the tearing of the flap. Any attempt to remove or tear open the sealed flap produces tamper evident markings thereon.

Abstract: A receivable bag arrangement is provided. The bag arrangement includes an internal resealing arrangement utilizable to reseal the bag closed, after it has been used. In a typical arrangement, the resealing mechanism is enclosed within a heat sealed outer periphery. An arrangement is provided, to facilitate tearing open the arrangement by hand. This arrangement includes use of a reinforced tab region immediately adjacent a tear region having a gap portion. The tear region having greater perpencity to tear there across then the reinforced tab region.

Abstract: An improved flexible envelope for use as a mailing pouch or evidence preservation package. The envelope is constructed of a metalized polyester material which is characterized by an incision in a wall of said envelope which is sealed by a pressure sensitive adhesively sealed flap. After the flap is folded over and sealed, the user may open the envelope without the assistance of a knife or scissors due to notches at either end of the line of incision which initiate and guide the tearing of the flap. Any attempt to remove or tear open the sealed flap produces tamper evident markings thereon.

Abstract: A bag construction is provided. In the preferred embodiment, the bag construction or arrangement comprises first and second side panels, and first and second edge gusset members. The gusset members are peelable from between the side panels; peeling being facilitated by positioning of end tab extensions at both ends of each gusset member. In a preferred embodiment, both side gusset members comprise a gas-permeable material of sufficient density to act as a contaminant filter, so that contents within the bag arrangement can be sterilized by a gas sterilization procedure.