DE2900998C3 - Lay-out and orientation cover for flexible container linings - Google Patents

Description

The invention relates to a deployment and orientation cover for flexible container linings (in the Follow only »lining«), primarily for filling solid storage or transport containers with liquids.

A number of linings are known, some of which are for repeated or single use are determined.

What they all have in common is the use of flexible materials, primarily foils, but also of coated fabrics.

Linings are laid out in the containers in various ways prior to filling. It is known Use of compressed air or the vacuum process, with which air is evacuated between Lining and container the design is accomplished.

In many applications, these known design methods are disadvantageous. Depending on the container size a not inconsiderable amount of time is required to correctly lay out the lining in the container. A relatively small filling opening in the container prevents the design from being checked. Blowing in of air is undesirable for filling goods that are sensitive to oxygen.

ίο

■ Ό

Further disadvantages arise from the fact that the lining laid out during filling of the The outer wall of the container loosens when air penetrates the intermediate wall; this can lead to wrinkles and cracks in the material to lead.

By US-PS 40 44 912 z. B. a container liner became known from flexible film, which in its folded empty state by its location in the Inside the container securing device is held and in the filled state error-free to the Inner wall of the container sets. The methoce has the disadvantage that it has an extensive purpose for fulfilling its purpose and expensive safety device can not do without.

The invention has for its object to design a lining so that it is under Avoidance of the disadvantages mentioned automatically designed when filling.

The solution to this problem assumes that a container is filled from below via a pressure line can be. In general, it is sufficient to put a collapsed liner with a flange part in the container to be introduced and the flange part to be attached to the container opening. The filling process causes a slow unfolding of the liner as the liquid rises. However, it can become uncontrolled Material fixations occur when the liquid does not reveal a layer of the lining. The loss of covering material prevents the full development and in unfavorable cases leads to a lack of material Elongation crack. To avoid this, the liner must have a lay-out and orientation sleeve which allows correct unfolding without any control.

The display and orientation cover consists of a flexible, preferably hose-like material that enclosing the collapsed liner so that part of the liner material is removed from the envelope remains free and thereby the lining provides an orientation for the bottom center of a container itself spreading liquid there.

As a result, the one required for the rest of the filling Lining material is gradually pulled out of the part that is still enclosed by the envelope.

The filling process can be done without pressure or under pressure.

It is possible, instead of a full-area, flexible hose, to use a hose-like network or Use hose cuffs.

It is also conceivable to support the pulling out of the container lining in that the Envelope in the middle part is also narrowed by an elastic hose cuff, whereby the Retention effect is reinforced.

The wrapping material of the subject matter of the invention can be made of plastic film, textile or woven materials, cellulose or other flexible materials. It is also conceivable, instead of the above-mentioned wrapping materials, threads or Use strips.

The display and orientation cover also serves as a protective cover and packaging before use, if it consists of a full-surface, flexible material.

If the transport or storage container has a further opening opposite the bottom filling opening, can this is where the end of the wrapping material is best attached. If this tool is missing, it is Combined envelope package without inserting the mutual locking.

The following is a preferred embodiment the invention explained in more detail with reference to the accompanying drawing.

The combination shown in the drawing of flexible container lining (21) and that enclosing it hose-like covering (22) is a possible starting form of a container lining for automatic, oriented design. A suitable flange (23) is required for filling and emptying intended.

A container (24) suitable for the purposes of the invention is used to hold the liner on the floor opened (25) and made accessible via an opening in the cover (26).

Then you open the lower end of the display and orientation cover and push a certain one Stretch up the enclosed liner, placing the flange part and part of the Liner free (27). The exposing chin can be omitted if the wrapping is appropriate from the start is kept shorter or in some other way the upper part of the lining is enclosed by wrapping. This can be done, for example, with an additional elastic hose cuff.

The package prepared in this way for orientation is then pushed into the container (28) and the clamped the upper end of the casing material in the lid opening (29). In the absence of such an opening, means another laying technique to freely insert the package into the container without upper fixing.

After the assembly of the flange part, filling can begin via a valve.

The limited release of part of the liner in first gives the penetrating liquid the Opportunity to spread out evenly and evenly from the center of the ground. The unfolding of the lining is oriented with this method in such a way that an optimal distribution of the flexible lining material is initiated κ. becomes (30). This measure is important to avoid overfolding the lining, usually made of flexible plastic film, should be avoided when laying out.

Only when the released amount of lining, which is located outside the wrapping material, is completely JD Once the liquid has been filled with liquid, the dispensing and orientation cover begins to have a positive effect.

Little by little, the increasing amount of liquid fetches the necessary lining material that it needs thereby constantly encloses (31).

1 sheet of drawings

Claims (6)

Claims: 29 OO 998 1. Lay-out and orientation cover for flexible container linings, characterized in that that the device for securing the position of a container lining (21) enclosing is hose-like envelope (22) which surrounds the folded container liner so far that When the container is filled, the part of the envelope (22) that has remained free is first Liner (21) expands in order to remove the lining material required for the remaining filling from the to gradually pull out the still enclosed part of the casing. 2. Display and orientation cover according to claim 1, characterized in that the cover (22) consists of a hose-like network or a hose cuff. 3. Display and orientation cover according to one of the preceding claims, characterized in that that the casing (22) in the central part is additionally provided with an elastic hose cuff is narrowed, which is used to reinforce the retention effect as a support for the design process Pulling out the container lining (21) is used. 4. Display and orientation cover according to one of the preceding claims, characterized in that that as a wrapping material plastic films, spun or woven materials, cellulose or other suitable Wrapping materials are used. 5. Display and orientation cover according to one of the preceding claims, characterized in that that the container lining (21) is held in place only with a strip or thread. 6. Display and orientation cover according to one of the preceding claims, characterized in that that the wrapping material is held at the other end in a further container opening and can also be removed there after filling.