High-outflow one-way pressure relief valves with structure unexpectedly providing high-outflow gas evacuation from a package are disclosed. Pressure relief valves of the types described herein may be applied to a product package with a flexible wall or walls, for example a package containing food products, to allow gas to escape from the package while preventing entry of ambient air into the package. The valve structure provides for a high-outflow valve which opens at a low pressure differential between pressure within the package and pressure outside the package to allow gas existent in the package to be rapidly evacuated from the package while preventing air inflow into the package. The valve enables a package to be rapidly compacted for efficient stacking, storing, palletizing, transporting, displaying of the packaged goods at a point of sale, or any other purpose for which efficient package size is wanted while also preserving and maintaining the quality of the packaged product.
F16K 17/02 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side
2.
Package backer card with interlocking article-retaining tabs
A package backer card with interlocking article-retaining tabs for improved retention of an article for packaging. A package backer card may include an article-support panel and one pair, or more than one pair, of opposed tabs formed of the panel. The panel may be of a pliant material having a memory. Each of the opposed tabs may have a shank and an inwardly facing clip. Each tab may initially be in a position extending away from the other. Each tab may be bendable outward from the panel toward the other tab to a position in which the clips interlock together to form a restraint for an article therebetween. Each shank may be under tension to return toward the panel from the material memory to keep the clips interlocked to secure the article to the panel. Methods of securement of an article to a package backer card are disclosed.
One-way pressure relief valves with structure providing high pressure opening and closing functionality are disclosed. Valves of the types described herein may be applied to a product package with flexible walls, for example a package containing dry roasted coffee, to allow gas to escape from the package while preventing entry of ambient air into the package. The valve structure provides a high-pressure valve which both opens and closes at high pressure internal to the package. The valve structure eliminates or reduces excessive expansion of the flexible-walled package caused by pressure increases within the package and eliminates or reduces excessive contraction or paneling of the flexible-walled package caused by increases in ambient pressure outside the package providing for an aesthetically improved package while also maintaining the quality of the packaged product.
A wetting fluid applicator unit for applying wetting fluid to pressure relief valves during packaging of product, such as roasted coffee, with a packaging system. The wetting fluid applicator unit includes an unpressurized wetting fluid reservoir which delivers wetting fluid to plural fluid supply circuits. One fluid supply circuit charges a spray head with wetting fluid while the other fluid supply circuit is replenished with wetting fluid from the unpressurized reservoir. The wetting fluid applicator unit ensures continuous flow of wetting fluid to the spray head while enabling replenishment of the reservoir during continuous operation of the packaging system.
One-way pressure relief valves with structure providing high pressure opening and closing functionality are disclosed. Valves of the types described herein may be applied to a product package with flexible walls, for example a package containing dry roasted coffee, to allow gas to escape from the package while preventing entry of ambient air into the package. The valve structure provides a high-pressure valve which both opens and closes at high pressure internal to the package. The valve structure eliminates or reduces excessive expansion of the flexible-walled package caused by pressure increases within the package and eliminates or reduces excessive contraction or paneling of the flexible-walled package caused by increases in ambient pressure outside the package providing for an aesthetically improved package while also maintaining the quality of the packaged product.
One-way pressure relief valves (10), (10a) with wetting fluid reservoirs (15) are disclosed. Valves (10), (10a) of the types described herein may be applied to a product package, for example a package (11) containing dry roasted coffee (21), to allow gas to escape from the package (11) while preventing entry of ambient air into the package (11). A wetting fluid (17) is provided within the valve (10), (10a) to facilitate formation of the seal blocking entry of ambient air through the valve (10), (10a) and into the product package (11). The wetting fluid reservoirs 15 hold wetting fluid (17) to limit or prevent leakage of the wetting fluid (17) from the valve (10), (10a) providing benefits such as improved application of the valves (10), (10a) to the packages (11), improved retention of the valves (10), (10a) to the packages (11), and appearance improvements resulting from avoidance of leakage of wetting fluid (17) onto the valve (10), (10a) and the package (11) to which the valve (10), (10a) is attached.
One-way pressure relief valves with wetting fluid reservoirs are disclosed. Valves of the types described herein may be applied to a product package, for example a package containing dry roasted coffee, to allow gas to escape from the package while preventing entry of ambient air into the package. A wetting fluid is provided within the valve to facilitate formation of the seal blocking entry of ambient air through the valve and into the product package. The wetting fluid reservoirs hold wetting fluid to limit or prevent leakage of the wetting fluid from the valve providing benefits such as improved application of the valves to the packages, improved retention of the valves to the packages, and appearance improvements resulting from avoidance of leakage of wetting fluid onto the valve and the package to which the valve is attached.
One-way pressure relief valves having a plural-part dry strap are disclosed. One-way pressure relief valves may be applied to a product package to evacuate gas from the package. In embodiments, the plural-part dry strap comprises overlapping dry strap parts which impart improved operation to the valve.
F16K 7/17 - Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage with flat, dished, or bowl-shaped diaphragm arranged to be deformed against a flat seat the diaphragm being actuated by fluid pressure
B65D 77/22 - Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags Details
F16K 15/14 - Check valves with flexible valve members
F16K 17/18 - Safety valvesEqualising valves opening on surplus pressure on either side
16 - Paper, cardboard and goods made from these materials
17 - Rubber and plastic; packing and insulating materials
20 - Furniture and decorative products
Goods & Services
Extruded plastic films for medical device packaging; plastic films for industrial and commercial packaging use Heat-activated polymeric adhesive bonding film for use in manufacturing; Pressure-sensitive adhesive-backed tape in die-cut and uncut forms for industrial or commercial use; Die-cut electrical insulators for industrial or commercial use; Die-cut plastic films, pressure-sensitive adhesive-backed tape, and adhesive-backed laminations for use in the manufacture of medical devices; Extruded plastic films for use in the manufacture of medical devices and medical device packaging; Flexible and semi-rigid plastic rollstock for use in the manufacturing of thermo-formed cavities in packaging One-way degassing valves for application to packaging; Plastic packaging hang tabs for use in displaying merchandise in a retail environment; Die cut, flexible, and semi-rigid plastic component parts used as packaging for the medical device industry, namely, packaging cards, guide wire holders, catheter covers, tubing holders, and support and divider segments for placement in pouches or trays or packaging to support a device in the pouch, tray or package
A method for applying a lubricant to a pressure relief valve during the process of applying the pressure relief valve to packaging. The method includes temporarily separating layers of the valve with a vacuum applicator when the lubricant is applied. A pressurized nozzle sprays or atomizes the lubricant into the valve opening. Graphite suspended in liquid silicone is used as the lubricant; it is recirculated in a reservoir to keep the graphite in suspension. Optical sensors check for valves before the entrance to, and after exit from, the vacuum applicator.
B31B 37/00 - Machinery characterised by making envelopes or bags with structural provision at the base for thickness of contents, from webs, e.g. from tubular webs
B31B 19/00 - Machinery characterised by making rectangular envelopes or bags of flat form, i.e. without structural provision at the base for thickness of contents
A self contained one-way pressure relief valve for application to product packaging that does not require the addition of a sealing lubricant. Atop a base with an opening extending through the base is an adhesive-like material layer, and a dry strap of a silicone or other release film coated membrane, all of which are of gas impervious materials. The release film coated material layer covers the opening with the release film in contact with the adhesive-like material creating a surface attraction between the release film and the adhesive-like material. An intermediate layer of gas impervious material with an opening extending through such layer may be provided. A gas pervious filter material layer may be provided to block passage of fine particulates or liquid.
A self contained one-way pressure relief valve for application to product packaging that does not require the addition of a sealing lubricant. Atop a base with an opening extending through the base is an adhesive-like material layer, and a dry strap of a silicone or other release film coated membrane, all of which are of gas impervious materials. The release film coated material layer covers the opening with the release film in contact with the adhesive-like material creating a surface attraction between the release film and the adhesive-like material. An intermediate layer of gas impervious material with an opening extending through such layer may be provided. A gas pervious filter material layer may be provided to block passage of fine particulates or liquid.
A one-way pressure relief valve having an integrated filter. One-way pressure relief valves may be applied to a product package to evacuate gas from the package. The integrated filter prevents materials within the package from interfering with closure or operation of the pressure relief valve. Certain pressure relief valve embodiments can be configured for optimal valve operation without need for a wetting agent while other pressure relief valve embodiments operate optimally with a wetting agent.
A lubricant applicator unit for pressure relief valves for a system for applying pressure relief valves to packaging during a packaging process, including a vacuum applicator for temporarily separating layers of the valve when the lubricant is applied. A pressurized nozzle sprays or atomizes the lubricant into the valve opening. Graphite suspended in liquid silicone is used as the lubricant; it is recirculated in a reservoir to keep the graphite in suspension. Optical sensors check for valves before the entrance to, and after exit from, the vacuum applicator.
17 - Rubber and plastic; packing and insulating materials
Goods & Services
die cut, flexible and semi-rigid plastic component parts for the medical device industry; namely, guide wire holders, catheter holders, catheter covers, tubing holders, and support and divider segments for placement in pouches or trays or packaging to support a device in the pouch, tray or package flexible and semi-rigid plastic rollstock for thermo-forming cavities in packages used in the packaging industry; plastic films for industrial and commercial packaging use
