Pouch forming machine

Abstract

The present invention relates to a pouch forming apparatus for forming a cup portion in a pouch sheet, comprising: a die having a recessed nest formed on its upper surface and a flat portion formed along the periphery of the nest; a stripper that, when the pouch sheet is placed on the die, pressurizes and fixes the portion of the pouch sheet placed on the flat portion; and a punch that pressurizes the pouch sheet so as to enter the nest to form a cup portion in the pouch sheet, wherein a bead protrudes from the surface of the flat portion, and the bead is formed to have a curved shape on the flat portion.

Claims

1. A pouch forming device for forming a cup portion on a pouch sheet, A die having a recessed nest formed on its upper surface, and a flat portion formed along the periphery of the nest, When the pouch sheet is placed on the die, a stripper pressurizes and fixes the portion of the pouch sheet that is placed on the flat portion, The device includes a punch that pressurizes the pouch sheet to enter the nest and form a cup portion in the pouch sheet, A pouch forming device wherein a bead is formed protruding from the surface of the flat portion, and the bead is formed to have a curved shape on the flat portion.

2. The die has two parallel long sides and two parallel short sides connecting the two long sides at the boundary between the nest and the flat portion. The flat portion is, A first region extending along the aforementioned long side, It includes a second region extending along the shorter side, The forming apparatus for a pouch according to claim 1, wherein the bead is formed in the first region.

3. The pouch forming apparatus according to claim 2, wherein the shortest distance between the bead and the long side within the first region is furthest at both ends of the bead and closest in the middle of the bead.

4. The pouch forming apparatus according to claim 3, wherein the bead is formed in each of the first regions on both sides of the nest.

5. The forming apparatus for a pouch according to claim 4, wherein the beads are formed symmetrically on each of the first regions on both sides.

6. A pouch forming apparatus according to any one of claims 2 to 5, wherein a sub-bead is formed protruding from the surface of the second region.

7. The pouch forming apparatus according to claim 6, wherein the shortest distance between the sub-bead and the short side within the second region is furthest at both ends of the sub-bead and closest in the middle of the sub-bead.

8. The pouch forming apparatus according to claim 7, wherein the sub-beads are formed in each of the second regions on both sides of the nest.

9. The pouch forming apparatus according to claim 8, wherein the sub-beads are formed symmetrically on each of the second regions on both sides.

10. The pouch forming apparatus according to claim 2, wherein the nest is divided into two divided nests by a partition, and the partition is formed in a direction parallel to the long side.

11. A sub-bead is formed protruding from the surface of the second region. The pouch forming apparatus according to claim 10, wherein two sub-beads are formed in each of the second regions on both sides so as to sandwich each divided nest.

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