A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and seperable by perforations, and may be printed on both sides.

A liquid sample bulk mailing packaging device includes a paperboard envelope blank assembled to form a hermetically sealed leakproof containment pocket that, in combination with proper alignment of a liquid containing packette enclosed inside, will prevent leakage in the event the enclosed liquid containing packette fails during mail processing. The device may include coupons printed on the envelope blank and seperable by perforations, and may be printed on both sides.

The embodiments relate to a polyester film, which has a high tensile strength in the transverse direction and a low tensile strength in the longitudinal direction, while satisfying the condition of 0.5<A<6, A being calculated by Equation 1. A polyester film according to the embodiments can easily be cut in the transverse direction.

The embodiments relate to a polyester film, which has a high tensile strength in the transverse direction and a low tensile strength in the longitudinal direction, while satisfying the condition of 0.5<A<6, A being calculated by Equation 1. A polyester film according to the embodiments can easily be cut in the transverse direction.

A bend and tear postcard with pocket, having flaps 1 extending from an interior graphics side and an exterior graphics side of a postcard. The flaps fold inwards toward the interior graphics side at fold of flaps. Flaps extend from the interior graphics side and the exterior graphics side of the postcard, the flaps fold inwards toward the interior graphics side. Flaps extending from the interior graphics side and the exterior graphics side of the postcard, the flaps fold inwards toward the interior graphics side and are glued to a glue area of the interior graphics side. A peelable adhesive strip or glue adheres to a bend and tear-away closure.

A bend and tear postcard with pocket, having flaps 1 extending from an interior graphics side and an exterior graphics side of a postcard. The flaps fold inwards toward the interior graphics side at fold of flaps. Flaps extend from the interior graphics side and the exterior graphics side of the postcard, the flaps fold inwards toward the interior graphics side. Flaps extending from the interior graphics side and the exterior graphics side of the postcard, the flaps fold inwards toward the interior graphics side and are glued to a glue area of the interior graphics side. A peelable adhesive strip or glue adheres to a bend and tear-away closure.

A reusable envelope has one or more spaces thereon where address, return labels and/or postage can be removably placed or permanently affixed such as for finite number of shipments using a permanently affixed postage area, for example. The reusable envelope also includes a resealable closure allowing the interior of the envelope to be closed and reopened multiple times for multiple uses (shipments, receiving) or optionally to use a finite number of times by exposing the permanent adhesive to the flat and mating surface depending on user preference.

A reusable envelope has one or more spaces thereon where address, return labels and/or postage can be removably placed or permanently affixed such as for finite number of shipments using a permanently affixed postage area, for example. The reusable envelope also includes a resealable closure allowing the interior of the envelope to be closed and reopened multiple times for multiple uses (shipments, receiving) or optionally to use a finite number of times by exposing the permanent adhesive to the flat and mating surface depending on user preference.

A plastic soft tube with a cap structure able to control outflow includes a tube main body, a main body connector having an outlet, and an outer cap. The main body connector is provided with an inner cap and a middle cap fitted on the inner cap. The inner cap includes a protruding post. The protruding post has a first passageway. A lower end of the protruding post is connected with a protrusion for the first passageway selectively to communicate with the outlet or not to communicate with the outlet. The middle cap has a post hole corresponding to the protruding post. The middle cap and the inner cap are movably mated with each other. When the middle cap is turned, the inner cap is brought to move up and down relative to the main body connector for controlling the outflow of the liquid or paste.