Single-lobe filter bag for infusion products

Abstract

A single-lobe filter bag (1) for infusion products comprises a length (2) of filter material forming a chamber (3) containing a charge (4) of the infusion product. The length (2) comprises: a first closed top end (5) formed by a first join (S1) between two first end edges of the length (2); a second closed bottom end (7) and two sides (8, 9) connecting the two ends (5, 7) of the length (2); the two sides (8, 9) connecting the first and second edges (5, 7) are at least partly folded onto each other to form a fold towards the inside of the chamber (3) and the second bottom end (7) of the filter bag (1) is closed by a second join (S2) designed to form a rigid flat bottom surface (11) of the filter bag (1) such as to define a stable base, with a substantially triangular cross section, for supporting the filter bag (1).

Description

technical field [0001] The present invention relates to single-lobe or single-chamber filter bags for infusion products such as tea, coffee, chamomile and the like. Background technique [0002] There are currently many different kinds of filter bags (or tea bags) on the market for brewing the above products in water. [0003] A wide range of Filter Bags is currently available because of the increasing usage and popularity of Filter Bags, both at home and in public places, which has led to a growing demand for the diverse designs of Filter Bags especially from product distributors, Said diversification is aimed at obtaining filter bags with improved properties in terms of product capacity, ease of interchange with liquids during brewing, shelf life, ease of final packaging, etc. [0004] The two main designs currently in use are the traditional single-leaf filter bag (often with a string and tag) and the long-established two-leaf bag (also with a string and tag, with or wit...

AI Technical Summary

Problems solved by technology

[0009] The product is more constrained in the filter bag and has less room for expansion during the brewing process, which means poorer brewing quality and longer brewing time;

[0010] Flattening causes the surface of the filter bag to become misshapen;

[0011] Difficult to pack filter bags due to possible movement during placement

[0012] Flattening and movement of filter bags can damage and reduce the overall quality of the product contained

Also, it should be noted that for exhibition use (during display and selection), loose filter bags will not be able to stand upright, unlike other types of filter bags such as tetrahedral or pyramid shaped bags

However, other types of filter bags such as tetrahedral or pyramid shaped bags are much more expensive than single leaf filter bags

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