摘要:
The invention is a produce bag that permits fumigation of the contained product but effectively prevents product moisture loss. The bag is perforated on one major surface only, the other surface being left imperforate. The perforations on the other surface provide from 0.35-2.0% open area on this surface. Perforations are preferably in the range of 0.12-0.18 inches in diameter and 50 or more are typically needed. When filled with produce, a single layer of filled bags is placed in a corrugated shipping container. The imperforate surface of the bag is placed downward in contact with the shipping container to prevents moisture loss to the container.
摘要:
A method for packaging, cooling, and storing fresh produce is disclosed. The produce is placed in a plastic bag having apertures that control ventilation so as to admit a fumigant gas but prevent significant moisture loss. Multiple units of the bagged produce are, in turn, placed in a corrugated shipping container. Using the bag design shown it has been found that humidity of the cold storage environment may be safely reduced to about 65-75% without significant deterioration of the contained produce. This is in contrast with the usual 90% RH environment needed to prevent moisture loss. The reduced humidity environment effects a very significant improvement in shipping container compression strength. Storage at 70% RH, in contrast to storage at 90% RH, results in an almost 50% improvement in compression strength. The result is less damage to the containers and their contents. Somewhat lighter weight shipping containers are also suitable, resulting in reduced costs.
摘要:
A shipping container having an internal plastic bag is described, as is the method of forming the container. A flat container blank if first formed. This differs from a conventional blank only in that it has blind score lines centered vertically on each of the end panels. Adhesive strips are placed on or adjacent the major score lines separating the face and end panels of the container. Either a flat or gusseted bag is then laid on the blank with a sealed bottom edge adjacent the outside edges of the bottom flaps of the container. An open end of the bag extends beyond the upper edge of the container. The blank is then folded along the blind score lines to form a partially assembled container that can be shipped flat. Final assembly can be readily done in the field. The container eliminates the need for field insertion of the bag where one is required.
摘要:
Products are placed in proximity to a liquid holding cooling element containing a volatile liquid and are subjected to a vacuum. The evaporation of the liquid from the cooling element enhances cooling while reducing the evaporation of liquid from the product.
摘要:
A corrugated produce container is formed from a single piece of suitably cut and scored corrugated packaging material. The container has a bottom, two side walls and multi-ply end panels. Suitable stacking tabs may be provided and the top closure panels can be folded over the stacking tabs. Hinged to each wide end panel is a multi-part reinforcing end panel having a first portion extending in the vertical direction and having a top member hinged thereto which is folded over and has one edge thereof sized to overlie the top edge of the end panel. Hinged to this portion is another vertically extending reinforcement member and hinged on the opposite side of it is the major reinforcement end panel. Suitable hand holds and ventilation apertures can also be provided.
摘要:
The invention is a method of overlaying a plastic film material on a shipping container blank whereby all surfaces and edges are sealed. A container subsequently made from the blank is rendered highly water resistant. The film material is applied to both sides of the blank and severed from the supply source. The covered blank is then heated above the softening point of the film. The film becomes bonded to the surfaces of the blank and sags around the edges and into any openings so that the film on the two sides of the blank come into contact and are sealed to each other. The edges and any slits and cutouts are then trimmed, as by a die cutter, while preserving the seals along the edges. Containers made by the process can generally be recycled, in contrast to wax or resin impregnated corrugated board.
摘要:
A container that is easily openable, reclosable, reusable and storable in a lay-flat condition between uses. The container has a tuck-in closure. In this closure the cover panels are hingedly attached to triangular tuck-in end closure panels which fold over and then fold behind a flange on the upper edge of the container. The flange can be formed in the container at the time of its manufacture. The flange may also be a two-part flange provided by a two-piece container having separate body and cover elements. The body has a downwardly extending flange along its upper edge and the cover has an upwardly extending flange along its lower edge. The cover telescopes over the body and the cover flange locks behind the body flange. The closure panels then fold over and lock behind this flange.
摘要:
A partitioned tray formed from a single unitary blank in which the partitions are formed from the side walls. Each of the side walls has three sections, two side wall sections and a partition section which is hinged to one of the side wall sections. A triangular toggle panel is formed in the bottom panel and is hinged to the partition panel and the bottom panel. The triangular bottom panel is an isosceles triangle.
摘要:
A method for encapsulating a cellulose based substrate with polymeric film involves raising the temperature of the respective films using an electromagnetic radiation source and providing a pressure differential between an environment defined between the films and an environment external to the films so that conformance of the films to the cellulose based substrates is promoted. The cellulose based substrate is entirely encapsulated by the plastic films and the films are sealed around the peripheral edges of the cellulose based substrate as well as edges that are defined by slots and cutouts.
摘要:
A corrugated shipping container for liquids is described. An outer container is a conventional corrugated box. This preferably has an inner corrugated liner forming corner posts. A liquid impermeable plastic bag having a spout and cap is contained within the outer box. The upper closure flaps of the container may have an opening or tear out portion for access to the spout. The neck of the spout is retained in a fixed position at a desired location at the top of the container by a saddle shaped insert having wing-like side members. The retainer ensures that the spout will be immediately accessible when desired, even though the container may have had severe handling stresses causing considerable bag movement.