| 摘要 |
<p>A coffee or tea filter pouch for the production of filtered coffee, or resp., tea includes two layers of a water-permeable filter material, which are joined at the edges to form a package containing a coffee powder or resp., tea leaves. The filter material is unilaterally heatsealable, and the two layers (2, 3) of the filter material are joined at the edges (4, 5, 6, 7) through a heatsealing seam. The heatsealing seam along the upper edge (7) is adapted to be pulled open or torn open, or else the two layers (2, 3) are joined together at the upper edge (7) through a folded layer of said unilaterally heatsealable filter material, said folded layer being inserted, with the folded edge pointing downwardly and with the heatsealable side being directed outwardly, into the upper region of the filter pouch (1), and the gusset (insert) (10) is heatsealed to the two layers (2,3) of the filter material at the upper edge (7) and in the region of the side edges (4, 5). The filter pouch (1) may be produced by a continuous or an intermittent process from two webs or from a single web of said filter material.</p> |
