| 摘要 |
Filter sleeve made of nonwoven fabric conforming to food standards, especially made of viscose, provided with a lengthwise stitching. It is characterised in that edges (2) (3) of the filter sleeve (1) are brought together along the lengthwise stitching. One edge (3) is placed over another (2) with a certain width so that the latter edge (2) projects. The lengthwise stitching (4) is produced in the hem (5) parallel to the two edges (2) (3). <IMAGE>
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