DE9012878U1 - Packaging containers for flowing goods - Google Patents

Description

OPHARDT PRODUCT
HERMANN OPHARDT
Helenenstrasse 11
4174 Issue»

Packaging containers for flowing goods

The invention relates to a soft, blow-molded plastic container for flowing filling materials with varying wall thickness, wherein in the area of the greater wall thickness there is a molding that can be used as a suspension or fastening in a dispenser housing. Furthermore, this

Plastic container has a cylindrical opening which is located in the area of the larger wall thickness and which

&psgr; suitable for accommodating a dosing outlet.

Soft plastic packaging containers offer various advantages: they save space when empty, can be emptied without letting in air, and they produce less waste volume and weight than conventional, rigid plastic containers.

The manufacturing methods for these containers are divided into two main areas, the foil welding and punching process and the blow molding process. In the former, soft packaging containers are made from smooth foils using appropriate welding and punching processes.

In the blow molding process, a soft packaging container is produced from an extruded plastic tube by inflating it at the appropriate processing temperature within a mold.

The containers produced using the respective process are soft, compressible and therefore not voluminous.

In practice, however, it has been shown that plastic film containers are often leaky at the weld seams. Technically-related, complicated work processes are the reason for this 75% inadequate quality.

£ In addition, certain applications require the use of plastic film containers in dispensers, holding or supporting devices _such as cardboard wrappings. In this case, welded and punched holes or molded extensions are used, which can be inserted into corresponding

holding elements in the dispenser.

A cardboard _box is also very frequently used to hold the plastic film container. If a hose-like extension is then connected to the plastic film container, the well-known "BAG IN BOX" dispenser packaging is obtained.

On closer inspection, you will see that such packaging consists of a number of materials, such as cardboard or paperboard for the box, PE for the bag, silicone rubber for the hose-shaped extension, and a valve body with a valve ball and metal spring at the end of the extension for the contents to exit. This fact contradicts the idea of recycling, because when disposing of it, it is impossible to split a "BAG IN BOX" packaging into its individual parts and then dispose of it properly.

Soft packaging containers offer the advantage that the contents can be removed without air flowing into the container. The remaining contents in the container therefore do not come into contact with air or with particles in the air.

Containers made of plastic film have the disadvantage that uncontrolled folding can cause crushing in the area of the container itself, which prevents it from being completely emptied.

It should also be noted that the constant formation of wrinkles leaves a not insignificant residual amount of the contents in the packaging container.

The object of the invention is now to find a packaging

to create a container that does not have the disadvantages described, but still offers advantages through further features.

This object is achieved according to the invention by the characteristic

the features of claims 1 - 5.

The design of the packaging container according to the invention includes a difference in wall thickness. With the exception of the wall area with the molded-on holding element, which is relatively strong, the walls are kept very thin (similar to film).

If the filling material is now drawn off from such a container without air inlet (this is preferably done by means of a permanently connected dosing pump in a dispenser

device), the film-like thin half of the wall moves in the direction of the thick half of the wall. When completely emptied, the thin wall is then pressed against the thick wall.

Since this container does not form folds that make complete emptying impossible, but the empty container retains a stable shape and therefore cannot collapse, ySySiiubsr ds~i &idigr;&udiagr;&Ogr;&idigr;&Tgr;!3&Ggr;&igr;tSHSH StSild dsr

Technology has achieved a great advantage. 10

The drawings provide further explanations of implementation and application examples. They show

Fig. la - Ic
15

Three-dimensional images of a suitable packaging container with a connected dispenser

Wings 2a - 2c
20

Three-sided view as per Fig. 1, but here the emptied state is shown

Fig. 3a - 3d
25

Three-side views according to Fig. 1, but a variant with a holding element on the bottom of the container is shown

Fig. 4a - 4c

Three-dimensional views according to Fig. 1, here another variant is shown

Fig. 5 and 6

Examples of applications of a packaging container according to the invention when used in a dosing dispenser

According to Fig. 1 to 4, the container is a closed, blow-molded, soft hollow body with a connected dosing outlet in the manner of a piston pump 20 and a molding 30 or 31, which can serve as a suspension in a dispensing device (Fig. 5 and G).

The packaging container is generally constructed in such a way that it consists of two container sections x and y, whereby the container section x is relatively rigid and the container section y is thin like a film.

The formations 30 and 31 are always part of the rigid

Container section x. Example arrangements of the molding are 30, whereby the molding in this case is located in the middle area of the rigid container section x.

In the front view Fig. 1b, 50 a rectangular formation 30 is shown. In the top view Fig. 1c, 51 the undercut 35 of the formation 30 can be seen. Fig. 3a - 3d show an example arrangement of the formation 31 in the opposite area of the removal opening 20.

In the bottom view Fig. 3d a dovetail-like formation 31 is shown. In the front view Fig. _3b the end of the rear flange 36 of the formation 31 can be seen.

The rectangular formation 30 as well as the dovetail-like formation 31 serves as a holding element for the packaging container in a dispensing device.

When arranged accordingly in a dispenser (Fig. 5), the formations 30 and 31 serve as a viewing window for the fill level of the contents, whereby the prerequisite here is that the container is made of a transparent material.

When the packaging container is emptied without air intake by suctioning out the container contents, the film-like thin section y moves into the relatively stiff section x. If the container is empty, section y is completely attached to section x. The empty state of the packaging container is indicated in Fig. 2a - 2c and Fig. 4a - 4c by the stitch line 22.

Emptying ass 5shsits?ä kssiii suwöhi uüiTCii =j~i AwSSUgsn

by means of a pump 70 in a dispenser 80, as well as mechanically by compression.

An example of using the soft container in the manner described is shown in Fig. 5. A dispenser device 90 with a receptacle and holding device 91 for the molding 30 is shown. A metering pump 70 is arranged on the removal opening 20. A hand lever 92 is connected to the action part of the metering pump.

Another example use of the which

Fig. 6 shows the container. A plastic housing 100 with a button 101 accommodates the container 50 with the mounted dosing pump 70.

Claims (1)

Expectations 1. Which packaging container for flowing goods, manufactured using the plastic blow molding process, with &igr; connected dosing outlet and intended for the supply 1 turn in a dispenser housing, characterized in 1' 5 that one half (x) of the container in the wall relatively I is dimensionally stable and thick in relation to the ' second half (y), which is foil-like thin. j' 2. Packaging container according to claim 1, characterized in &Idigr; 10 shows that the material of both the container and I of the dosing outlet in the manner of a piston pump from the the same recyclable plastic (e.g. polyethylene). 15 3. Packaging container according to claim 1 or 2, characterized characterized in that a holding element (30) is formed on the dimensionally stable half (x), which serves for the plug-in fastening of the container in or on a dispenser housing.