Improved Sealing for Coffee Pods

Single-use coffee capsules that are biodegradable and compostable, while having a good barrier function with regard to oxygen and water vapor. The capsule contains a polymer formulation that includes polyhydroxybutyrates (PHB) and optionally silicates, vitamin E, and proteins. The capsule container is injection molded from this biodegradable polymer blend and filled with coffee powder. The capsule also has a biodegradable seal. The PHB-based capsules have barrier properties comparable to aluminum capsules but can biodegrade in industrial and home composting.

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Beverage cartridge lid for use in coffee brewing machines like espresso machines. The lid has features to improved the sealing when the cartridge is inserted into the brewing chamber. It has an inner contour that centers the cartridge in the chamber and an outer contour that gets deformed by the chamber rim for a tight seal.

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A coffee capsule that can be filled multiple times with coffee powder and reused, reducing waste and cost compared to disposable capsules. The capsule has a shell to hold the coffee and a sealing film covering the shell opening. A hoop compresses the film edge against the shell to seal it. This allows the capsule to be filled and sealed with coffee multiple times while still fitting capsule coffee machines.

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Tool for making coffee capsules that can be reused and refilled with coffee grounds. The tool has a die holder and a pressing die to seal the capsule body. A guide piece helps align the sealing film with the capsule opening during pressing. The tool also has an annular gland and hoop to attach after sealing to reinforce the capsule.

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A coffee capsule for use in machines that avoids the issues of aluminum capsules while providing convenience. The capsule is made of a ductile metal like steel that can withstand the high pressure without deforming. The capsule has a paper or cellulose gasket that provides a good seal, but avoids the delamination and bursting problems of previous paper gaskets. The gasket is fixed to the capsule flange with a biodegradable adhesive.

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Coffee bag packaging and sealing device that improves the quality of packed coffee by evacuating the air inside the bags. The device has a gantry with movable lifting plates, an air pump, a vacuum chamber, and a sealing assembly. The lifting plates hold coffee bags and the pump evacuates the air. The vacuum chamber has a sealing assembly with movable clamps that close around the bag openings. The pump, vacuum chamber, and sealing assembly are synchronized to evacuate the bags, seal them, and then fill them with fresh air before sealing again. This removes the initial air that can degrade coffee quality.

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Paper capsule with a polymer-coated flange for coffee machines. The capsule has a paper body and flange, with a molded polymer coating on the flange that covers the paper to provide a smooth sealing surface without folds or creases.

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A method for applying a sealing member to a capsule for preparing beverages like coffee. The method involves feeding a viscous sealing composition onto the flange edge of the capsule, then forming it around the edge by pressure. This creates a sealing ring that helps prevent leaks when the capsule is placed in a beverage machine. The sealing composition is applied using a device that feeds it onto the flange and a mold that pressurizes it against the edge. The sealing member can be formed by migrating the composition into the gap between the flange and side wall when pressed. The mold also has teeth that support the flange during sealing. The sealing member can be joined to the cover by sealing it around the outer edge of the cover.

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A capsule for containing coffee or other substances to be extracted in a hot water extraction machine. The capsule has a thickened section of the side wall closest to the flange, a single circumferentially extending sealing rib protruding from the flange towards the base, and a circumferentially extending channel between the rib and thickened section. The rib provides a sealing surface that contacts the extraction machine sleeve to prevent leaks.

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Improved capsule design for single-serve beverage machines, like coffee machines, that allows high quality beverage extraction without requiring additional packaging. The capsule is made of injected-molded plastic with a side wall, bottom, and sealed membranes covering both ends. The side wall is a single cone frustum shape with a sealed label. The bottom has a central opening and crown connected to the side wall, and an inner sealed membrane.

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A coffee capsule for espresso machines that provides an improved seal using a cellulose or paper ring that plastically deforms when engaged by the machine's capsule cage. The capsule is made from a ductile metal like aluminum. The ring on the flange deforms to provide a seal when clamped by the machine. This avoids the need for silicone seals used in other capsules. The cellulose ring provides an effective sealing without needing a separate sealant.

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A compostable lid for sealing a capsule containing coffee, such as a coffee pod. The lid is made of layers that satisfy the conditions of use in coffee machines while being compostable. The lid has a support layer, an oxygen barrier layer, an adhesive layer, and a non-woven layer containing biodegradable fibers. The lid can seal the capsule without tearing when pierced, prevent coffee grounds from passing through, and provide an oxygen barrier. The lid layers are arranged in different configurations to balance properties.

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A coffee capsule that when brewed in a coffee machine produces a hot creamy liquid. The capsule contains a specific blend of fat, milk protein, and lactose to create a creamy texture and good foam when brewed. The capsule also has a sealing cover that perforates during brewing to allow dispensing of the creamy liquid.

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A coffee pod for single-serve coffee machines that resists buckling when pierced. The pod has a container body with a sloped sidewall, bottom wall, and stacking shoulder. The sloped sidewall helps strengthen the body against buckling when the bottom wall is pierced. The sidewall also has an improved sealing surface for the filter inside to minimize unadhered portions and prevent ground coffee from bypassing the filter.

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