A product container made of a certain plastic material, and the coupling of multiple such product containers together are disclosed herein. Each of the product containers includes either a solid or a solid/liquid combination product therein, which impacts the process of coupling the product containers.

System for heat shrink sealing open-topped containers wherein the system includes a housing or enclosure wherein a majority of a bulk roll of film material is accessible when the cover is open. The system preferably includes two opposing rollers that are configured to engage the film and cause it to move to a dispensing position. In a preferred aspect, the system includes a movable sealing unit that accommodates use of the lidding system with open ended containers having various sizes and shapes. In a more preferred aspect, the system includes an indicia generating device operable to label sealed containers and a knife that generates a perforation in the film during sealing operations.

A dehumidification device of a package thermal-shrinking oven includes at least one thermal-shrinking oven body for being combined with a packaging and conveying strip for conveying an object-to-be-packaged and having a lower portion that is provided with at least one pair of connecting portions, at least one steam conduit having a lower end connected with at least one steam device, at least one thermal isolation board mounted to an upper portion of interior of the steam conduit and enclosing two sides of the packaging and conveying strip, at least one pair of first heaters respectively mounted to two sides of exterior of the steam conduit, at least one second heater mounted to a bottom of interior of the steam conduit, and at least one pair of third heaters respectively mounted to two sides of exterior of the thermal-shrinking oven body. The connecting portions of the thermal-shrinking oven body respectively receive two sides of an upper portion of the steam conduit to connect thereto, so that hot steam generated by a steam device is introduced into the steam conduit and the first and second heaters first heat up the hot steam to become moisture-removed hot gas to be guided by the two sides of the upper portion of the steam conduit through the connecting portions into the interior of the thermal-shrinking oven body to implement a heat-shrinking packaging operation on the object-to-be-packaged located on the packaging and conveying strip, and the third heaters are operable for synchronously implementing dry and hot air heat-shrinking packaging operation in the interior of the thermal-shrinking oven body for an enhanced moisture removing effect.

A heat shrinking apparatus 1 includes: a conveyance unit 11 conveying a package 3 obtained by wrapping an object(s) 5 with a heat-shrink film 4; an endless belt 21 disposed below a conveying surface of the conveyance unit, rotating along a conveying direction of the conveyance unit; and a hot air jet unit 19(20) jetting out hot air from an inside to an outside of a belt surface of the endless belt facing the conveying surface, wherein: the endless belt has a hot air passing portion 30 extending in a belt width direction; the hot air jet unit jets out the hot air toward the conveying surface through the hot air passing portion; and the endless belt rotates following a movement of the package so that a seal portion(s) 6a(6b) provided at a front end and/or a rear end of the package is/are heat-shrunk with the hot air.

A heat shrinking apparatus 1 includes: a conveyance unit 11 conveying a package 3 obtained by wrapping an object(s) 5 with a heat-shrink film 4; an endless belt 21 disposed below a conveying surface of the conveyance unit, rotating along a conveying direction of the conveyance unit; and a hot air jet unit 19(20) jetting out hot air from an inside to an outside of a belt surface of the endless belt facing the conveying surface, wherein: the endless belt has a hot air passing portion 30 extending in a belt width direction; the hot air jet unit jets out the hot air toward the conveying surface through the hot air passing portion; and the endless belt rotates following a movement of the package so that a seal portion(s) 6a(6b) provided at a front end and/or a rear end of the package is/are heat-shrunk with the hot air.

A packaged article is composed of a bulk bag having a top end and a bottom end. Further included is a pallet having a first side and a second side. Also included are an outer bag having a first closed end and a first open end and a heatshrink bag having a second closed end and a second open end. The first closed end of the outer bag is between the bottom end of the bulk bag and the first side of the pallet. The first open end of the outer bag is gathered over the top end of the bulk bag to enclose the bulk bag within the outer bag. The second closed end of the heatshrink bag is proximate to the top end of the bulk bag and the second open end contacts the second side of the pallet.

Systems and methods for shrink wrap bundling a group of heat-sensitive products are provided. A method comprises: providing a heating oven with a convective heat source and a radiant electromagnetic energy source therein and a product; and wrapping the product with a shrink film that comprises an activation temperature and an electromagnetic energy absorbance level. The method also comprises: placing the wrapped product inside the heating oven for a predetermined duration of residence time; exposing the wrapped product to radiant electromagnetic energy for a predetermined duration of exposure time, wherein the direction of the electromagnetic energy is coincidental or approximately coincidental with a plane of the shrink film; and removing the wrapped product from the heating oven resulting in the wrapped product being robustly bundled according to a defined Bundle Rigidity Test without substantial damage to the heat-sensitive products of the wrapped product.

A shrink-wrapping tunnel heater which comprises a gas heater which heats gas used to heat and shrink a shrink film onto articles, such as packages or packaging units. The heater has at least one porous burner which comprises a porous body or reactor. The porous body or reactor designed to combust fuel therein to produce heat, but without an open flame. Articles are moved through the shrink tunnel and the heated gas heats and shrinks shrinkwrap film onto the articles.

A direct gas-fired process air heater assembly that utilizes a premix burner applied to a shrink wrap conveyor oven for uniform dissemination of heated air into the a recirculating air stream of a circulating blower, said air circulating blower directing the heated air into the shrink wrap chamber or tunnel for shrinking polymer film around packaged goods for shipment and/or storage.

According to various aspects, exemplary embodiments are disclosed of the direct gas-fired packaged process air heater assembly construction features including the application of premix burner technology.

The present invention relates to a heat-shrinkable packaging intended for wrapping a series of containers, comprising a lower portion, an upper portion and lateral portions and having a reinforcement strip arranged transversely to the rows of containers, the packaging according to the present invention comprising at least two perforation lines. The present invention also relates to a method for packaging containers by means of a packaging and to a packaging blank.