FI85408B - Method for the manufacture of a fire door - Google Patents

Description

85408

METHOD OF MANUFACTURING A FIRE DOOR

The invention relates to a method for manufacturing a fire door formed of a uniform reinforcing structure, in which method the casting mass is cast in a casting mold of the desired door size uniformly attached to the required steel stiffener frame of the door leaf.

It is known to use different materials in door structures to provide the desired thermal or sound insulation properties. Molded products, such as rock wool or loose pulps, as well as other extrudates, such as those based on organic polymer bonds, inorganic or mineral bonds, are useful. These specific masses are characterized by the presence of various binders and stiffeners which decompose at a temperature between 400 ° and 900 ° to form a gas. These gases can be toxic (phenolic resins), corrosive (PVC) or self-igniting (cellulose).

The use of sheets made of calcium silicate hydrate, or CSH, as thermal insulation is known. Although these boards contain about 2% by weight of cellulose fibers, they are approved according to DIN 4102 (AI) as building materials in the "non-combustible" class. However, in practical tests, it has been found that insulation in accordance with DIN 4102 (AI) in door structures complying with fire conditions ignites.

The object of the invention is to provide an improvement, i.e. to improve the properties of thermal insulators and insulating materials, and to present a high-quality fire door in which these thermal insulating materials can simply be used. The solution to the problems is described in the claims. The invention is characterized by what is set forth in the characterizing part of claim 1.

The invention is illustrated by two figures. Figure 1 shows an adjustable mold, and Figure 2 shows a stiffener frame for a door leaf.

In Figure 1, the parts of the mold correspond to the numbers as follows: 2 85408

The lower part 1 of the casting mold shows a longitudinally shown free section of the profile of the stiffening frame 8 on the hinge side. The upper part 2 of the casting mold is formed like the lower part 1 except that it has a longitudinal free section of the profile of the stiffening frame 9 and two tie bolts 5 as well as a width adjusting device 1 of the casting mold 1 In the longer upper part 2, the profile is milled out for the space required by the lock 12.

The base plate 4 forms the lower stop of the mold for all widths.

The parts 7 are adapter pieces corresponding to the corresponding length and width, with which the stiffening frame parts of the door panel consisting of parts 8-11 are fastened in position in terms of widths and lengths.

In the basin consisting of the parts described above, a door leaf stiffener frame consisting of parts 8-11 according to Fig. 2 is made, the dimensions of which depend on the desired door size.

Thereafter, according to the instructions, the mixed insulating material in liquid form can be poured in, and a bond is also formed between the stiffening frame and the insulating material.

In this connection, the part 12 of Fig. 2 is a lock mold which provides space for a retrofit lock which is fixed to the inner frame 9 and which can be removed after the casting compound has dried and hardened. Figure 2 shows that the door panel reinforcement frame comprises a hinge-hydrophilic kestopro 8, the lock side of the profile 9 and the upper door and the lower part of the prof i ileista 10 and 11.

No. 13 shows an alternative internal stiffener for the insulation. The parts 10 and 11 are arranged so that these profiles are separated after the casting of the insulating material, so that no thermal bridge is formed.

3 35408

The advantages of the invention are the following:

The casting model can be reused. Its length and width are adjustable. Depending on the materials, the stiffening frame is designed so that no material loss occurs with different materials. In addition, the following advantages should be noted: Complete non-combustibility; a clear, completely filled structure that does not generate heat; no post-processing is required; minimization of surgeries; no waste, no asbestos and no binders (organic or inorganic), no toxins and no corrosion.

4 85408

PARTS LIST

1 Lower part of the casting mold 2 Upper part of the casting mold 3 Side stops of the casting mold 4 Base plate of the casting mold 5 Fastening bolts 6 Screws 7 Adapters 8 Door plate stiffening parts 9, 10, 11 respectively 12 locking mold 13 Door plate internal stiffener

Claims (4)

5 85408 A method of manufacturing a fire door formed of a unitary reinforcing structure, the method comprising uniformly casting a casting mass in a casting mold (1,2,3,4) of the desired door size on the required steel stiffener frame (8,9,10,11) of the door panel, characterized in that a casting compound is used, which is an insulating material consisting of a thixotropic calcium silicate mixture which cures in a hydrothermal process with a stiffener frame (8,9,10,11) to form a solid insulating sheet and forms a non-combustible joint between calcium silicate and steel. January 2 The method according to claim, characterized in that a casting mold having a base plate (4) and on top of that the hinge (8) and lock side (9) to the upper and lower door panel jäykistekehysosaan (10,11) fitted to the frame parts, which are molded components ( 1,2,3). Method according to Claim 1 or 2, characterized in that an internal stiffener (13) of the insulation is placed inside the door leaf stiffening frame (8,9,10,11) inside the door plate formed by casting. Method according to Claims 1 to 3, characterized in that a casting mold is used which is adjustably adjusted to the dimensions of the desired door. 6 rt 5 4 O 8