DE7708810U1 - Vacuum tight packaging - Google Patents

Description

Ιβ ££.! Ι Sch 369 / sh - applicant)? Schroeder company Λ ¥ a _b ner

Bahnhofsallee 4-5 326 Rinteln / Weser

"Vacuum-tight packaging"

for the packaging of loose goods, in particular of! * ground multiple evacuable containers made of vacuum-tight, flexible materials are used, which consist of one or more layers and are heat-sealable at least on the inside are. These wrapping materials are, for example, in the form of endless belts for the formation of tubes or in iron Supplied in the form of prefabricated hoses to a packaging machine and transversely sealed, creating a one-sided closure. Such a smart bag is separated from the tape, filled, Vacuumed and sealed again in a vacuum. This creates a solid block, with the excess packaging material forming folds and between the transverse sealing seams without the cut edges flags arise. As a result, the block-shaped packing is not stable and is due to their irregular shape does not stimulate purchase. The appearance cannot be improved by printing the packaging material before processing, because of the resulting Wrinkles and irregularities in the shape of image and writing the printing does not come into its own. It was therefore previously necessary to additionally provide the vacuum-packed goods with an outer cover -to be provided which is the irregular and not very presentable The shape of the vacuum-packed product can be covered and, in turn, can be printed in an advertising-effective manner. As an outer shell is used many times a folding box or soft packaging in the form of finished bags or bin wrappers are used. Bine such an additional outer shell however, it is complex and undesirably makes the packaging more expensive.

-Z-

The innovation is intended to create a vacuum-tight packaging that avoids the disadvantages of previous packaging and enables particularly economical packaging. According to the innovation, a heat-sealable inner layer with the made of paper or the like outer layer only 5es Bottom area and on the top edge of the bag by gluing or sealing connected. This adhesive or heat-sealed seam is useful interrupted so that the space between the two layers after vacuuming and sealing with the outside air in connection stands * This ensures that <£ he smooth outer layer all Irregularities of the vacuum-sealed inner bag are covered and also the bag as a result of additional! · Material ripening gives good stability in the ground.

An embodiment of the new packaging is attached as a model of a block bottom bag. It can be seen from this that the vacuum-tight, heat-sealable inner layer in the area of the rectangular bottom of the bag with the outer layer made of paper is connected by gluing or heat sealing. In addition, this inner layer is with the outer layer near the top of the Bags glued or welded. The adhesive or heat-sealed seam between the inner layer and the outer layer is interrupted.

The bag, designed according to this new spatial shape, can be opened and filled on the usual filling machines. After When filling, the tight inner bag is vacuum-sealed and sealed under vacuum, whereby it forms a solid block with its filling shrinks. After removal from the vacuum station there is normal air pressure between the outer layer and the vacuum-tight inner layer of the bag, since the outer layer remains smooth and does not shrink with it, so that they remove the irregularities caused by vacuuming of the inner bag covered. This gives the pack a smooth, cuboid, attractive »appearance and a sufficient stability and dimensional stability. In addition, by eliminating the hitherto customary additional outer shell a

I I I

substantial savings in production costs achieved | also are the additional operations previously necessary for attaching the special outer shell associated with more or less expenditure on packaging material such as folding boxes or wrapping material is no longer necessary, so that the packaging process is significantly streamlined *

The new heat-sealable, double-layer block bottom bag can /, either prefabricated on the block bottom bag machine " ^{1. To the J}

Get packaging machine, or formed on one of these upstream or integrated in this molding machine or station and glued or sealed in the manner described.

Claims (2)

• »· · <· ι ι ι ι ι t ι ι ι ι ι ι - ■ '*' a. U «_« · t ι «·» «ι .11 ι Protection claims 1) Vaeeum-tight packaging in the form of a double-layer Block bottom bag with a heat-sealable, flexible Inner layer and an outer layer made of paper or the like «, dadurcto. marked that the inner layer with the outer layer is only connected in the bottom area and on the top edge of the bag by gluing or heat sealing is. 2) Packaging according to 1), characterized in that the adhesive odor H _e ißsiegelung the inner layer is interrupted with the outer layer.