Structural Reinforcement in Coffee Pods

Reinforcement ring for biodegradable capsules that make the capsules more sustainable and compostable. The ring has a reduced material design with a groove on one end of the side wall to decrease the amount of material used. The groove allows that end to flex and seal against the container when pressure is applied.

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Thermoforming method for manufacturing brewing capsules like coffee pods that reduces material usage while maintaining structural integrity. The method involves thermoforming a foil into a capsule shape using plug assist and pressure that creates a cavity. Then, forming the capsule bottom by pressing the foil against the forming tool floor. A key step is creating an annular gap at the forming tool floor under pressure, which forms a hollow center in the capsule bottom. This concentrates material at the rim and center, providing strength with less material than uniform thickness. The capsules have a thicker rim and center compared to the thin connecting area.

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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 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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Capsule for preparing beverages like coffee that is structurally reinforced to withstand the high pressures of coffee machines. The capsule is made from a composite material containing bio-polymers like cellulose or aliphatic polyesters, reinforced with natural fibers like coffee silverskin fiber. This gives the capsule better resistance to rupturing under high pressure compared to capsules made from synthetic materials. The composite material can be molded into the capsule shape using injection molding techniques.

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A reinforcement ring for coffee capsules that is lightweight, lower cost, and environmentally friendly. The ring has reduced thickness areas on its side wall to decrease material usage while maintaining stability. The reduced thickness areas increase asymmetry to aid sorting. The ring can be made of biodegradable material.

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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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A plastic capsule for brewing beverages like coffee from a sealed extraction material inside. The capsule has a square or rectangular shape with a wider collar at the extraction end. This collar stiffens the capsule and prevents it from deforming too much during brewing. The wider collar helps the capsule retain its shape and prevents it from approximating a spherical shape under high pressure and temperature. The arched cover of the capsule then seals against the brewing unit's surfaces for reliable extraction. This prevents jamming or sealing issues that can occur when the capsule deforms excessively.

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Capsule design and piercing system for coffee machines that allows clean piercing of the capsule base without clogging or tearing issues. The capsule has a base with an annular channel and a frustoconical stiffening zone that prevents sagging during piercing. The piercing system has a base plate with an annular piercing zone and a central elevation that centers the capsule during piercing. This abrupt buildup of tearing stress allows clean piercing of the capsule base.

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