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Package

a technology for packaging and containers, applied in the field of packaging, can solve the problems of limited time-consuming sealing effect and relatively easy split or tear of bags, and achieve the effect of increasing water tightness

Inactive Publication Date: 2007-11-22
HAVER & BOECKER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] According to one aspect of the present invention, a package for feed material according to the invention is in particular configured as a bag, comprising at least one package body of a sheet made of plastic and at least one de-aerating means with at least one de-aerating area where an inner sheet layer and an outer sheet layer are provided. The inner sheet layer and outer sheet layer form a de-aeration channel to connect at least one inner de-aeration opening that is in connection with the interior of the package body with at least one outer de-aeration opening that is in connection with the environment of the package body. The de-aeration channel comprises at least two separate chambers being in connection with one another through at least one overflow opening wherein the inner de-aeration opening is provided at the first chamber and the outer de-aeration opening, at the second chamber so as to increase water tightness.
[0008] The package according to the invention comprises gussets in particular when empty, being provided with welding corners in particular in the region of the gussets. In this way a rectangular shape and good stacking capability of the filled package is ensured.
[0009] The invention has numerous advantages. One significant advantage is that moisture must cover a considerably longer distance before entering into the package interior since the de-aeration channel comprises a first chamber and a second chamber. Any moisture entering must thus firstly travel the length of the second chamber, travel from the second chamber through the overflow opening to enter the first chamber and then travel the length of the first chamber before the entering moisture reaches the package interior. In this way, the protection achieved from moisture is higher than had been the case in the prior art.

Problems solved by technology

Such air bubbles are an impediment to the stacking capability and the bags can also relatively easily split or tear open at these places under pressure load.
Although the vertical staggering of the de-aeration openings toward the inside and toward the outside of the bag serves to prevent moisture from entering for some time, the distance between the outer and the inner de-aeration openings is less than half the bag length, the effect of sealing is limited in time.

Method used

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first embodiment

[0042]FIGS. 1 through 3 illustrate a package 1 according to the invention configured as a bag, comprising a package body 2 provided with gussets 3 made of a plastic sheet 4.

[0043] The package 1 serves to take feed material, in particular bulk material. In filling bulk material, air will as a rule enter the package along with the product to be bagged. Furthermore, an air bubble tends to form in the top region as the bag is closed. To allow the air present in the package to escape from the closed package 1, a de-aeration means 12 is provided on the flat surface of the package 1. In the de-aeration area 13, an inner sheet layer 14 that is adjacent to the product present in the interior volume of the package 1 overlaps with an outer sheet layer 15 that is adjacent to the environment.

[0044] Between the two sheet layers 14 and 15 there is positioned a de-aeration channel 16 connecting a plurality of inner de-aeration openings 17 with one or two outer de-aeration openings 18, thus providi...

fourth embodiment

[0065]FIG. 6 illustrates a package according to the invention in a general and simplistic sectional side view. In this embodiment the package body 2, the outer sheet layer 15 and the inner sheet layer 14 are formed integrally. The first and second chambers 19, 20 are positioned adjacent to one another. The chambers extend one above the other at least in part and, depending on the configuration they may be not at all adjacent. A separate interlayer 28 between the outer sheet layer 15 and the inner sheet layer 14 separates the two chambers 19 and 20 from one another. The individual chambers are subdivided by means of seams 29 at the sheet.

fifth embodiment

[0066] In a package according to the invention illustrated in FIG. 7 at least part of the first and second chambers are also positioned one above the other. The interlayer 28 is also formed integrally of the sheet such that the package body 2, the outer sheet layer 15 and the inner sheet layer 14 and the interlayer 28 consist of one piece of sheet. In manufacturing, the individual sheet layers 14, 15, and 28 are created by folding over and stacking the sheet and using suitable intermediate or bonded seams 29. The intermediate or bonded seams 29 separate and seal the chambers 19 and 20 from the side faces, except in those points where a separating layer 23 is provided (see FIG. 1).

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Abstract

A package for feed material comprising a package body consisting of sheet plastic and a de-aerating means having a de-aerating area, where an inner sheet layer and an outer sheet layer are provided to form a de-aeration channel to connect an inner de-aeration opening in connection with the interior of the package body with at least one outer de-aeration opening in connection with the environment of the package body. The de-aeration channel comprises two separate chambers interconnected through an overflow opening wherein the inner de-aeration opening is provided at the first chamber and the outer de-aeration opening, at the second chamber so as to increase water tightness.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS [0001] This application claims the priority of German Patent Application, Serial No. 10 2006 022 815.4, filed May 13, 2006, pursuant to 35 U.S.C. 119(a)-(d), the content of which is incorporated herein by reference in its entirety as if fully set forth herein. BACKGROUND OF THE INVENTION [0002] The present invention relates to a package for feed material, in particular a bag and preferably a gusseted bag, consisting of sheet plastic to protect the feed material from moisture and comprising a de-aerating means for excess air to escape from the package. [0003] Nothing in the following discussion of the state of the art is to be construed as an admission of prior art. [0004] After filling bulk material into bags, the air trapped in the bag will escape over time such that in the absence of a de-aerating means, air bubbles may form at the top surface of the package. Such air bubbles are an impediment to the stacking capability and the bags can als...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D51/16
CPCB65D33/01
Inventor EWERSZUMRODE, ANDREAS
Owner HAVER & BOECKER
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