Bulk bin with auto-closing bottom

a bin and bottom technology, applied in the field of large bulk bins, can solve the problems of affecting the storage and handling of bins, affecting the quality of bulk bins, and affecting the storage of bulk bins, and achieve the effect of reducing the difficulty of manual setup of bulk bins with eight sides

Inactive Publication Date: 2006-06-15
INT PAPER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a six-sided bin with a bottom flap construction that automatically moves into closed position when the bin is placed on its bottom end and moved from its flat state to its expanded state. This allows the bin to be easily prepared for use without requiring manual adjustment of the bottom flaps after being placed on a pallet.

Problems solved by technology

The technical problem addressed by this patent is how to create a bulk bin that is easy to set up and has automatic closing of the bottom flaps without requiring the bin to be reversed and placed on its top end first.

Method used

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  • Bulk bin with auto-closing bottom
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  • Bulk bin with auto-closing bottom

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second embodiment

[0040] the bin is indicated generally at 40 in FIG. 14. This embodiment has essentially the same inventive features as the FIG. 3 embodiment, and like parts are indicated by like reference characters. In addition, elliptically shaped creases 41 are formed in the side and end walls, reinforcing tape 42 is placed at predetermined spaced locations in the side and end walls, and the connecting webs 25′, 26′, 27′ and 28′ are crushed as indicated by the shading 43. The elliptical creases are similar to the arrangement shown in applicant's prior U.S. Pat. No. 6,588,651, and help obtain predictable and controlled bulging of the side and end walls. Crushing of the webs removes the natural springiness or memory of the material, resulting in the panels remaining more securely in their folded positions and tending less to spring back out to their unfolded positions.

third embodiment

[0041] the bin is indicated generally at 50 in FIG. 15. This embodiment is substantially the same as the embodiment shown in FIG. 3, and like parts are indicated by like reference characters. The only difference between this embodiment and the FIG. 3 embodiment is that the cuts31′ and 32′ separating the glue flaps 29′ and 30′ from respective adjacent minor bottom flaps are oriented oppositely and are on the opposite sides of the glue flaps from the arrangement shown in FIG. 3, whereby the glue flaps are separated from minor bottom flaps 20′ and 22′ rather than from flaps 21 and 23B as shown in the FIG. 3 embodiment.

[0042]FIG. 16 depicts a fourth embodiment 60 that has some features of the embodiment in FIG. 14, i.e., elliptical creases 41 and reinforcing tape 42 in the sidewalls, and crushed connecting webs 43, and some features from the embodiment of FIG. 15, i.e., the orientation of cuts 31′ and 32′ separating minor flap 22 from adjacent partial bottom flap 23B, and minor flap 20 ...

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PUM

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Abstract

A bin (10, 40, 50, 70, 80) has an auto-closing bottom and can be manufactured and shipped and stored in a flattened configuration and moved to an open expanded configuration at a point of use. The bin has opposed sidewalls (11, 12) and opposed end walls (13, 14 and 15, 16) and major bottom flaps (18, 19) on the sidewalls and minor bottom flaps (20, 21 and 22, 23) on the end walls. The flaps automatically move to their closed position when the bin is moved from its flattened configuration to its expanded configuration. A connecting web (25-28, 43) is foldably connected between each major bottom flap and an adjacent first side edge of an adjacent minor bottom flap, and adjacent side edges of the minor bottom flaps are foldably interconnected (29, 30 or 44), so that when the sidewalls and end walls are moved from their flattened configuration to their open expanded configuration, the major and minor bottom flaps automatically fold inwardly toward one another to close the bottom of the bin.

Description

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Claims

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Application Information

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Owner INT PAPER CO
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