| 摘要 |
The bag has extruded, profiled edges (30, 32) in the same material. Their thickness, 0.5-3 mm, exceeds that of the film. They have a slide (50) to open the fastening. Independent claims are included for the film used to make the bag, which contains the extruded areas of increased thickness. Also claimed is the equipment used to produce the bag, which makes the required extrusion with thickened and closure sections. Preferred features: The fastening profiles (20, 22) are produced by extrusion. In a similar alternative version they are separate, attached by adhesion. Alternative dimensions are proposed. The width is 0.1-1.5 cm, especially 9 mm. The hooked sections project perpendicularly from the sachet film. Return sections (53, 55) towards the film, work with the hooked closure sections. A number of further variants are described. A salient inclusion is an anti-tamper closure inside the main closure, which must be penetrated, to gain access to the contents of the bag.
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