Filter Innovation in Coffee Pod Design

A W-shaped filter cup for coffee machines that prevents uneven coffee extraction due to excessive coffee powder in the filter. The W-shaped filter has an outer and inner filter wall connected at the bottom to a filter plate with holes. The space between the walls holds the coffee. The W shape reduces the maximum coffee height compared to a straight wall filter, preventing excessive coffee powder buildup that can cause uneven extraction.

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A single-serve brewing system with customizable taste profiles using specialized pods. The pods have filters with extended bases that peel away from the container rim to create a gap. This allows the brewed beverage to drain out through the gap without contacting the brewer. The pods can pack more coffee grounds than traditional pods due to the larger volume inside and finer grind. The grind size and filter hole size can be varied to extract flavors at different pressures. The brewer can adjust temperature, time, and water ratio to further customize the taste.

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A coffee powder filter cup for a coffee machine with a simplified manufacturing process that improves the coffee brewing quality compared to traditional filter cups. The filter cup has a bottom wall with apertures formed by laser processing instead of punching. The laser apertures have extending portions with widths of 0.05-0.4 mm and lengths of 0.2-2.0 mm. This allows straight, consistent walls compared to punched holes. The thicker wall thickness of 0.7-1.5 mm reduces the risk of clogging and over-extraction during brewing.

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Portion capsule for brewing beverages like coffee using a capsule system. The capsule has a base element, cover element, interior space with extraction material, and a filter element made of an open-pore foam material. The foam filter separates the extraction material from the capsule base. The foam filter allows brewed beverage extraction without piercing or tearing the capsule. It simplifies capsule design and production compared to prior filters. The foam filter is inexpensive, easy to produce, and environmentally friendly. The foam filter prevents coffee grounds from entering the brewed beverage.

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Portion capsule for making beverages like coffee with a filter element made of a non-woven fabric that is formed using deep drawing or molding techniques. The filter element is inserted into the capsule and secured to the capsule body. This allows creating a custom-shaped filter inside the capsule instead of using a separate filter holder. The deep drawing process forms the flat filter into a 3D shape to fit inside the capsule. The molded filter prevents clogging while allowing dissolution of the beverage particles. The deep drawing also allows making the filter elastic to resist perforation by the brewing device. The filter element can be attached to the capsule by sealing to prevent movement during brewing.

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Capsule for coffee machines with improved extraction characteristics. The capsule contains a mixture of non-compacted coffee powder and compacted pellets. The pellets are larger than the capsule interior diameter to prevent flow issues. The pellets delay extraction compared to fine powder, providing a more intense coffee with similar total solids. The mixture allows adjusting extraction kinetics and intensity without increasing powder weight.

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Capsule design for brewing beverages like coffee using extractable products like ground coffee. The capsule has a unique filter design that improves extraction efficiency and reduces beverage loss. The filter has an annular reinforcing portion adjacent to the cup wall, with apertures between the reinforcing portions covered by a thinner filter membrane. This configuration allows the filter to be positioned inside the capsule with the membrane between the filter and the cup wall. This reduces stress on the filter during extraction and prevents large voids that can waste beverage volume and affect quality.

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A coffee filter cup with an optimized shape to extract coffee more evenly and fully compared to traditional V-shaped filters. The cup has a unique cylindrical top section that gradually transitions into a rounded bottom. This allows water to infiltrate and filter coffee powder uniformly instead of preferentially filtering the sides of a V-shape. The cup is made of a single piece of stainless steel for strength and precision. The bottom has a row of narrow filter holes that distribute extraction evenly. This cup design extracts coffee with better body, aroma, and acidity compared to V-shaped filters.

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A filter capsule for secondary filtration of extracted coffee to remove suspended particles and oils from pressure-extracted coffee. The capsule has a housing with a bottom, side wall, and cover that contains at least one filter element. The capsule can be used to process coffee from a brewing strainer to create a new filtered coffee with lower particle content.

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A filter for preparing coffee or infusions that prevents air from being trapped inside the cup during brewing. The filter has a close-fitting edge around the cup rim to prevent air from entering as the water fills the filter. However, as the water level rises, it pushes the filter down slightly to allow air to escape outside the cup. This prevents air from being trapped inside the cup during brewing, which can lead to weak or cold coffee.

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Portion capsule for making beverages like coffee that has a unique filter element design to reduce brewing pressure requirements and simplify production. The capsule has a base, side wall, lid, and filter element inside. The filter has a cutout section with no filtering material. This allows water to flow more easily through the capsule during brewing, reducing the needed pump pressure. The filter cutout area is sealed between the capsule body and lid. The capsule is made by forming the filter material and connecting it to the capsule base using ultrasonic sealing. This allows tensioning and shaping the filter during production.

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Coffee filter with water volume adjustment function to improve brewing quality by regulating the water flow rate and temperature distribution. The filter has a cup with a step inside the opening, a water distribution plate that sits on the step, and a filter rod with a head. The step separates the water into two paths, one through the filter rod and the other around it. The distribution plate has a lower groove with a step and an upper groove. The filter rod supports rest on the step in the lower groove. This configuration allows adjusting the water flow rate by controlling the water path length. The step in the upper groove also helps with temperature equalization by spreading the water over the filter head.

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Coffee filter with adjustable water volume for brewing coffee that improves flavor and aroma compared to traditional filters. The filter has a water dividing plate inside that separates the brewing chamber into two sections. The outer diameter of the plate is smaller than the opening of the container. This allows the user to adjust the amount of water that contacts the coffee grounds by filling the larger section with the desired volume. This prevents uneven extraction due to hot water temperatures and reduces oil filtration compared to traditional filters. The smaller section collects the brewed coffee. The adjustable water volume improves flavor and aroma by enabling customized extraction and reducing oil loss.

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Single-serve coffee pod that allows easy recycling and reduces clogging issues. The pod has a container with a separable rim that can be peeled away during brewing to create a gap for the beverage to drain. This prevents contamination from using the same outlet needle for different flavors. The separable rim also allows recycling the container without removing the filter. The pod has a filter with a pocket to hold the coffee grounds. The lid seals the pod and the brewing process involves injecting hot water through the lid to extract the coffee. When brewed vertically, the base is pierced. When brewed horizontally, the gap forms and beverage drains through it.

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Beverage capsule with improved filter assembly alignment for consistent brew quality. The capsule has a registration element coupled to the filter web. This element temporarily engages the filter formation tool during assembly. It aligns the filter precisely in the container. The registration element has complementary features to the tool. It prevents the filter from shifting during assembly. This ensures consistent wall height and prevents contamination issues. The registration element is made of a material like polylactic acid. It can be welded to the filter web. The registration element can also have protrusions or indentations to guide the filter into the capsule. This prevents the filter from being too high or too low.

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Thermoformable non-woven fabric for coffee capsules that has appropriate mechanical properties for capsule filters while being compostable. The non-woven is made from bicomponent fibers with a PLA core and PLA shell containing a plasticizer. The core-shell structure allows thermoforming to create deeper filter elements without breaking. The PLA composition provides elongation properties suitable for capsule filters. The thermoformable non-woven is compostable and can replace plastic-based filters.

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Compostable single-serve beverage pod for use in coffee machines that has increased beverage volume compared to conventional pods to optimize beverage strength and flavor. The pod design includes a toroidal-shaped receiving portion at the bottom that surrounds the piercing element of the coffee machine. This allows the pod to have a larger chamber for beverage material without the risk of the piercing element damaging the filter. The toroidal shape avoids contact with the piercing element while still allowing extraction through the filter. This maximizes the amount of beverage material in the pod, providing higher concentration and flavor compared to pods with reduced volume chambers to prevent piercing element damage. The compostable pod material allows for composting of the entire pod, reducing waste.

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A biodegradable single-serve coffee pod that allows gravity brewing with low water pressure like traditional coffee drip brewing. The pod has two layers of biodegradable filter material sealed around the coffee powder. An internal injector device inside the pod has vertical slots on its sides. When the pod is placed in a brewing machine, water enters through the slots and disperses into the coffee powder, mimicking the gravity flow of drip brewing. The injector keeps the layers spaced apart and prevents the pod from collapsing during brewing.

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Double-walled coffee filter for machines that simplifies assembly, disassembly, and cleaning compared to prior art filters. The filter has a cup-shaped body, removable filter wall, seal, and tightening member. The tightening member has a bayonet-type connection to the body with tongues in slots. This replaces the prior multi-piece coupling member. The seal is fixed between the wall and body, and a disk on the tightening member seals against the wall. This allows easier assembly/disassembly and prevents disassembly during use. The tightening member also has a small dispensing hole facing the body to allow brewed coffee flow.

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Preparing coffee-based beverages that can be used for human consumption. The preparation comprises a capsule that has a simple structure, is inexpensive and reliable, and is designed to enable preparation of a beverage of a filter-coffee type, or distinguished by a taste and/or an organoleptic result that are/is similar to that of filter coffee and presents an adequate quality.

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