DE2900998A1 - Sheath around collapsed flexible lining for rigid container - locates and gradually releases lining during filling with liquid from below to smooth out creases - Google Patents

Abstract

The sheath is intended for lacting a collapsed foil lining inside a rigid container (24) during filling with liquid from below. The system ensures that the lining fully unfolds in a regular manner and positions itself against the inner container wall without any remaining folds. The sheath is a flexible, preferably tubular envelope which initially holds the collapsed lining except at its lower end. As the liquid enters, its first fills (30) this lower end after which the remainder of the lining is gradually released (31) from the sheath until it completely fills the container.

Description

Lay-out and orientation cover for flexible

Container linings.

The invention relates to a deployment and orientation cover for flexible Container linings (hereinafter referred to as "lining"), primarily for carrying liquids fixed storage or transport container.

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

What they all have in common is the use of flexible materials, first and foremost Line foils, but also of coated fabrics.

Linings are in various ways before the coating in the Designed containers. The use of compressed air or the vacuum process is known, with the design by evacuating air between the liner and the container is accomplished.

In many applications, these are known design methods 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. The blowing of air is at Oxygen-sensitive filling goods are undesirable, further disadvantages arise as a result, that the liner is laid out from the outer wall of the container during filling dissolves when air enters the partition wall; this can lead to wrinkles and cracks in the material to lead.

The invention is based on the object of designing a lining in such a way that that they are automatically filled while avoiding the disadvantages mentioned interprets.

The solution to this problem requires that a container has a Pressure line can be filled from below.

In general, it is sufficient to have a collapsed liner with a flange part to be introduced into the container and to attach the flange part to the container opening. The filling process causes the liner to unfold slowly as the liquid rises. However, this can lead to uncontrolled material fixations if the liquid does not reveal a fold in the lining. The loss of lining material prevents the full development and in unfavorable cases leads to an expansion crack due to a lack of material. To avoid this, the lining must have a cover for laying out and orientation which allows correct unfolding without any control.

The display and orientation cover consists of a flexible one, preferably tubular material that encloses the collapsed liner so that a Part of the lining material remains free from the envelope and thereby the lining an orientation for the liquid spreading from the bottom center of a container gives.

As a result, the lining material required for the remaining filling is used gradually donating from the part still enclosed by the orientation cover dismiss.

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

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

The cover material of the subject of the invention can be made of plastic film, Textile or woven materials, cellulose or other flexible materials are made. It is also conceivable to use threads or strips instead of the wrapping materials mentioned use.

The display and orientation cover also serves as a Protective cover and packaging, if they are made from a full-surface, flexible material consists.

If the transport or storage container is opposite the bottom filling opening has another opening, the end of the wrapping material can do the best there be attached.

If this tool is missing, the combined envelope package is without insert the mutual locking.

In the following a preferred embodiment of the invention will be based on the accompanying drawing explained in more detail.

The combination of flexible lining shown in the drawing (21) and the enclosing Ausgungs- and orientation cover (22) is a possible Initial form of a container lining for automatic, oriented design.

A suitable flange part ( 23) provided.

A container (24) suitable for the purposes of the invention is used for receiving the lining is opened at the bottom (25) and accessible via an opening in the cover (26) made.

Then you open the lower end of the display and orientation cover, shuffling it a certain distance up the enclosed lining thus exposing the flange portion and part of the liner (27). The exposure can be omitted if the wrapping is correspondingly shorter from the start held or in some other way the upper part of the lining is enclosed by sheathing will.

The package prepared in this way for orientation is then stored in the container pushed in (28) and the upper end of the wrapping material into the lid opening pinched (29).

If there is no such opening, it can be done using a different laying technique Package can be freely inserted into the container without upper fixing.

After the assembly of the flange part, the filling can be done via a valve kick off.

The limited release of part of the liner gives the intruder Liquid initially gives the opportunity to spread out evenly from the center of the floor spread out. With this method, the development of the lining is oriented in such a way that that an optimal distribution of the flexible lining material is initiated (j). The measure is important to make overfolding the liner, mostly from flexible Plastic wrap to avoid laying out.

Only when the specified amount of lining that is outside the Uxniiüllungsstoifes is completely filled with liquid, begins the giving effect of the display and orientation cover.

Gradually, the increasing amount of liquid fetches the necessary amount Lining material that surrounds them permanently (31).

Claims (5)

Patent claims n Lay-out and orientation cover for flexible containers Linings characterized in that a flexible, preferably hose-like Wrapping fabric 1 encloses a folded container liner, with a part of the lining material remains free from the envelope and thereby the container lining oriented until the circular lining material is completely filled in order to be in the Follow the lining material required for the remaining filling from the still enclosed Part gradually to be released donating. 2.) Laying out and orientation cover in such a way that instead of one full-surface hose, hose-like network or hose cuffs are used will. 3.) Laying out and orientation cover in such a way that as a covering material Plastic films, textile or woven materials, cellulose or other suitable wrapping materials be used. 4.) Laying out and orientation cover in such a way that only with one Strip or thread holding the container liner in place. 5.) Laying out and orientation cover in such a way that the wrapping material is held at the other end in another container opening and there too can be removed after filling.