DE2360847A1 - Procedure for packing building blocks - has blocks wrapped in foil and protected by fabric sheets before steam heating in autoclave - Google Patents

Abstract

The procedure is for packing building blocks, esp. sand lime bricks, which are not affected by a treatment in an autoclave, by which the blocks are first wrapped in a foil and subsequently heated to shrink the foil round the blocks. After the bricks have been wrapped in the foil, they are covered by a sheet of protective fabric and thereafter placed in the autoclave in which they are heated by steam at a temp. of about 110 deg.C. the material of the protective fabric sheets is such that it is not affected by material of the foil or by the steam. The blocks which are hardened by steam in the autoclave and are after hardening, removed from the autoclave, and wrapped in foil and covered by sheets of protective fabric. Thereafter they are placed in the same autoclave to be heated by steam to soften and shrink the wrapping foil.

Description

DIPL.-ING. HORST ROSE DIPL.- IMG. PETER KOSEL

PATENT LAWYERS

3353 Bad Gandershelm, D. UÖZ. 1973

P.O. Box 129

Hohenhöfen 5

Telephone: (05382) 2842

Telegram address: Siedpatent Badgandershelm

Our file no. 2778/2

Nordhessische Kalksandsteinwerke GmbH & Co ₀ Patent application from c Qg ₂ iq "70

North Hessian sand-lime brick works GmbH & Coβ

3504 Kaufungen 2

Process for packaging components with shrink film

The invention relates to a method for packaging components, in particular sand-lime bricks, which are resistant to treatment in an autoclave, the components being wrapped in a shrink film and then subjected to a heat action leading to the softening of the shrink film, after which the shrink film shrink-wrapped onto the components

In the manufacturing facilities of such components and In particular, sand-lime bricks or aerated concrete bricks are known for packing these bricks, but above all to use shrink film to pack stacks of these stones. In these known methods, the stones or stone pile after leaving the previous treatment station, in the case of sand-lime bricks and aerated concrete bricks, that is, after leaving the steam hardening facility Autoclave, fed to a special packing station.

509825/0041 Rö / Hn.

Bank account : Norddeutsche Landesbank, Baä Gandershelm branch, account no. 22.118.970 Postal checking account: Hannover 66715

In this packaging station, a suitably pre-formed shrink film is applied to the stone or the stone stack postponed and it is then put in this particular packing station the shrink film through special heating devices Heated until it has softened appropriately «When it cools down, the shrink film shrinks onto the Component on «, This known procedure has considerable disadvantages special packaging station in the form of a special one, which is particularly complex because of the heating devices Machine required Furthermore, additional complex transport facilities are necessary, which in general have to bridge considerable transport routes «With regard to the packaging process itself, it has been shown that the Shrinking on with the special heating devices in the Packaging station leads to very uneven thicknesses of the shrunk film, so that in many cases the Shrink film and thus the packaging unit the following Transport and storage work up to the final removal on the construction site withstands «

The invention is based on the object of such structural elements and in particular sand-lime bricks that are opposite are resistant to treatment in an autoclave, to create a packaging process of the type specified above, with the complex additional packaging stations of the type described and the complex transport devices and transport routes are avoided, i.e. the overall packaging process is significantly cheaper, and also with a packaging that is as uniform and durable as possible is made possible «, subject of the invention, this is achieved in that the components wrapped with the shrink film covered with protective cloths and then heated in an autoclave with the action of steam, the cloths off one compared to the temperature used, the material used for the shrink film and the steam used resistant material. This will initially

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enables that the packaging process those autoclave can be used _p to such already in the production devices are available in Pertigungsstatten and can be used, can be largely avoided so that special equipment and machinery and special Iran sports facilities and routes. Furthermore, the advantage has been shown that a very uniform shrinking process can be achieved with the terpacking process under the action of steam in the autoclave and when using the cloths, so that the end result is a very uniform oil thickness, which significantly increases the durability of the entire packaging unit and causes damage packaging is avoided as far as possible during storage and transport processes to the construction site. The cloths covering the components wrapped in the shrink film also prevent the shrink film from sticking to the autoclave wall or to one another after it has softened.

If the method according to the invention for packaging in an autoclave steam-hardened components, in particular sand-lime bricks, so it is useful in a further embodiment of the invention if the components after removed from the autoclave for steam curing, wrapped in shrink film and covered with cloths and then heated to the specified softening temperature of the shrink film in the same autoclave. It can thus the packaging process is carried out within the manufacturing process immediately after the steam curing and especially in the same autoclave that is already being used for steam curing. That way you can the entire manufacturing process is significantly simplified and cheaper especially with regard to the energies required. On the anyway available The structural elements are briefly removed from the autoclave after they have been steam-hardened in the autoclave moved out »then for the packaging process in the

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prepared and finally in the same autoclave at the required temperatures with the specified manner Provide shrink film.

The heating is expediently carried out under the action of steam in an autoclave at approximately 110 ° C

For covering the components wrapped with the shrink film, i.e. the wrapped stones or stacks of stones, cloths made of a material are used that are resistant to the temperatures and steam used and, in particular, to the material used for the shrink film, i.e. during of the packaging process itself is not changed in such a way that it reacts in some way with the shrink film, such as ₀ by gluing o ₀ like "Due to the action of steam in an autoclave moist cloths used or wet, whereby the described constancy is promoted, and in particular a gluing between cloths and shrink films is excluded.

The material for the shrink film, in particular, plastics made of polyethylene have proved expedient "The cloths used are for _o B" from linen or nettle cloth or cotton in the respective suitable weave.

Patent attorneys

Dipl.-Ing. Horst Rose Dipl.-Ing. Peter Kosel

509825/0041

Claims (2)

DIPL.-ING. HORST ROSE DSPL-ING. PETER KQSEL PATENT LAWYERS 3353 Bad Gandershelm, ^ 5th DGZ. ~] 73 P.O. Box 129 ς ». Hohenhöfen5 "* Telephone: (05382) 2842 Telegram address: Siedpatent Badgandersheim Our file no. 2778/2 Nordhessische Kalksandsteinwerke GmbH & Co. Patent application from r _n 5. Uez, 1973 Claims M ·) Process for packaging components, in particular of sand-lime bricks that are resistant to treatment in an autoclave, the structural elements wrapped in a shrink film and then exposed to a heat effect leading to the softening of the shrink film after which the shrink film is shrink-wrapped onto the components, characterized in that that the components wrapped in the shrink film are covered with protective cloths and then placed in an autoclave be heated under the action of steam, the cloths from a temperature compared to the applied temperature, the material used for the shrink film and the applied Consist of vapor-resistant material «, 2. The method according to claim 1 for in an autoclave steam-hardened construction elements, in particular sand-lime bricks, characterized in that the components are removed from the autoclave after steam curing, - with the Shrink film wrapped and covered with the cloths and then in the same autoclave to the specified softening temperature the shrink film are heated " Rö / Hn 509825/0041 Bank account: Norddeutsche Landesbank, Bad Gandershelm branch, account no. 22.118.970 Postal checking account: Hannover 66715 • fr- 3ο method according to claim 1 or 2, characterized in that that the heating under the action of steam in the autoclave takes place at approximately 110 ° C Patent attorneys Dipf.-Ing. Horst Rose Dipj.-Ing. Peter Kos © I 509825/0041