EP0266350B1 - Method for producing a high-resistance fire door - Google Patents

Abstract

A method for producing a high-resistance fire door presenting an integrated resistant construction is characterized in that a filler mass is cast together with the reinforcement frame of the door leaf required in a mould corresponding to the size of the door so as to obtain a plane surface as a single unit.

Description

As is known, various types of materials are used for door constructions in order to achieve the desired thermal and acoustic insulation.

Once formed products are used, e.g. Rock wool or fillings and other shaped articles, such as. e.g. those based on organic polymeric, inorganic or mineral compounds. It is a typical feature of these insulating materials that they contain various types of binding and reinforcing agents which decompose under the action of temperature of 400 ° -900 ° with the development of the structure. These gases can be toxic (phenolic resins) corrosive (PVC) or self-inflammable (cellulose).

It is known to use sheets based on CSH as thermal insulation material. Although these panels contain approximately two percent by weight of cellulose fibers, they are classified as "non-combustible" according to DIN 4102 (A1) for building construction. Practical tests have shown that insulation materials according to DIN 4102 (A1) ignite in door constructions under fire conditions.

The invention is therefore based on the object, starting from FR-A-871171 according to the preamble of claim 1, to remedy this, i.e. to improve the properties of the thermal insulation and the thermal materials and to adapt and simplify the manufacture of a fire door for these thermal insulation materials.

The solution to this issue is described in the claims.

• Fig. 1 eine verstellbare Gießform und in
• Fig. 2 einen Türblattversteifungsrahmen.

The invention is explained below with reference to two drawings. The drawings show in

• Fig. 1 is an adjustable mold and in
• Fig. 2 shows a door leaf stiffening frame.

1 is composed as follows. The foot part 1 of the mold shows a cut in the longitudinal direction for the profile of the stiffening frame 8 on the hanging side. The head part 2 of the casting mold is designed like the foot part 1, but with a free cut in the longitudinal direction for the profile of the stiffening frame 9 and with two pieces of stud bolts 5 and with screws 6 for the purpose of width adjustment of the casting mold with the aid of the side limitation 3. Furthermore, in the head part 2 provide a profile milling for the inclusion of a lock 12.

The base plate 4 forms the lower boundary of the mold in size for all width variants.

The part 7 are adapters of different lengths and widths in order to fix the door leaf stiffening frame parts - consisting of the parts 8 to 11 - with variable widths and lengths in their position.

The door leaf stiffening frame according to FIG. 2, consisting of parts 8 to 11, each of which is matched to the door sizes, is placed in the tub created with the aid of the parts described above.

Then the insulating material mixed according to the recipe, prepared in liquid form, can be filled in and thus forms a flush connection between the stiffening frame and the insulating material.

In addition, according to part 12 in Fig. 2, a lock rubber ensures the required space for later lock installation, which is screwed into the inner frame 9 and can be removed after drying and hardening of the casting compound.

Fig. 2 shows that the door leaf stiffening frame consists of the strength profile 8 on the hanging side, the profile 9 on the lock side and the profiles 10 and 11 as the head and foot parts of the door.

With 13 an alternative insulating interior reinforcement of the door leaf is indicated. The parts 10 and 11 are dimensioned such that these profiles are enclosed by the insulating material after the molding, so that no thermal bridge can arise.

• Das Gußmodell ist jederzeit wiederverwendbar. Es ist in der Länge und Breite größenverstellbar. Der Versteifungsrahmen ist materialbedingt so entwickelt, daß durch die unterschiedlichen Materialien keine Verwerfungen auftreten. Folgende Vorteile kommen hinzu:
• Absolute Unbrennbarkeit, saubere, voll ausgefüllte anliegende Konstruktion-daher keine Wärmebrücken, keine weitere Bearbeitung erforderlich, Minimierung des Zuschnittes, keine Abfälle, kein Asbest und keine Bindemittel (organisch oder anorganisch) nicht toxisch und keine Korrosion!

The advantages of the invention are as follows:

• The cast model is reusable at any time. It is adjustable in length and width. The stiffening frame is developed due to the material so that no warping occurs due to the different materials. The following advantages are added:
• Absolutely non-flammable, clean, fully filled adjacent construction - therefore no thermal bridges, no further processing required, minimization of the cut, no waste, no asbestos and no binding agents (organic or inorganic), non-toxic and no corrosion!

Reference symbol list

• 1 mold base
• 2 mold headboard
• 3 mold side limit
• 4 mold base plate
• 5 stud bolts
• 6 screws
• 7 fitting
• 8 door leaf stiffening frame parts
• 9, 10, 11 also
• 12 lock rubber
• 13 door leaf interior reinforcement

Claims (4)

1. A method of producing a fire door with a strong, integral construction, in which a moulding compound is cast together with the required door leaf reinforcing frame (8-11) in a mould (1-4) corresponding to the required door dimensions to obtain a definite, planarform, characterised in that the molding compound is an insulating material and comprises a thixotropic calcium silicate mixture such that as a result of a hydrothermal process it hardens with the reinforcing frame to form an insulating panel of definite shape and forms a non- combustible calcium silicate steel union therewith and, in addition, has high mechanical strength and good thermal and sound insulation properties.

2. A method according to claim 1, characterised in that a mould (1-4) is used comprising a flat base (4) arid, situated thereon, hinge side (8) and lock side (9) frame portions (8,9) which enclose the upper and lower door leaf reinforcing frame portions (10, 11) and which are surrounded by a mould frame (1-3).

3. A method according to claim 1 or 2, characterised in that within the door leaf reinforcing frame (8-11) an insulating inner reinforcement (13) is provided inside the door leaf formed during moulding.

4. A method according to any one of claims 1 to 3, characterised in that a mould (1-4) is used which is adjustable in accordance with the required door dimensions.

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