Manufactured items are made of polypropylene by injection integral molding technology, structurally balanced.

The following products are available:

• colorless NATUR
• in white and black (other colors on request)
• stabilized or not to UV radiation

The presented product is invaluable in use as a structural element - the so-called. wall element for the manufacture of various types of containers subjected to constant static, corrosive or chemicals loads. In contrast to the flat sheet plates coffers have spatial structure, namely on the one side, the surface is smooth like the surface of a plate and, on the other side is a truss of rib height of 80 mm and spacing in both directions at 100 mm. The reinforced structure is similar in design layout to the honeycomb. With this construction coffers are characterized by a much greater strength, stability and stiffness. Thus, some containers can be made only with coffers without additional relevant strengthening, and other without reinforcements parts, due to the much greater strength of the wall elements - coffers. A calculation in terms of stability of tank should me made each time.

The main application of wall coffers is the construction of concrete and reinforced concrete tanks in the system of so-called shuttering formwork - where reinforcing ribbed elements - are inundated with concrete outside and inside the tank we get a smooth chemical resistant and completely sealed surface of polypropylene - and physiologically inert capable of having contact with drinking water -on the wall elements produced we have obtained adequate hygienic attestation of National Institute of Hygiene.

Other extremely popular uses of MOD Quatro 1920 caissons are:

• construction of tanks in tight spaces - basement (access through narrow corridors, narrow doors, the need to bring all elements by hand and welding of the tank on-site of installation) to be used, for example, as a buffer tanks - reservoirs - reserve for the purpose of powering fire protection systems in the absence of sufficient pressure in network (eg, tall buildings, the need for an additional set of pumping), or in the event of external power failure
• construction of overflow tanks in all kinds of swimming pools, water parks - it is for tanks to take over the surplus water when the pool is used at any given time by more people

Examples of other applications using polypropylene reinforced plates – coffers:

• storage tanks, process tanks (for media ranging from water and ending with the chemically aggressive compounds) in the food industry, chemicals, metal surface treatment
• reservoirs, spare and process tanks in water treatment technology and hydrophore stations
• septic tanks, slurry tanks
• wells
• construction containers
• container treatment plants at the facilities
• biofilter containers and other elements of the wastewater and air treatment
• valve chambers, water meter chambers, etc.

More applications in tanks section.

The standard format of sheets is 1000 x 1000 mm and 1200 x 1200 mm, coffer thickness is 80 mm, wall thickness 10 mm

The following modules are available:

Module 25	Module 25 VARIO	Module 20
(distance between the main structural ribs is 250 mm)	(as above, but with additional structural ribs in the middle of the plate allowing cutting of the plate retaining the standard edge)	(distance between the main structural ribs is 200 mm)

plus an additional type of Quattro with a double reinforcements in the mid of width of a coffer in both directions, providing the possibility of cutting and obtaining the elements of a measure for example, 1000 x 500 mm or 500 x 500 mm mantaining the external rib - strengthening element in each element cut. As a result, by using the Quatro element, there are no waste when cutting into smaller pieces, and the tanks can be produced in virtually any configuration of size.

Additional information, properties and technical data for download in PDF format

Due to the different production technology - machine injection compared to plates- extrusion, material is used with other parameters in terms of flow rate MFI (Melt Flow Index), MFR (Melt Flow Rate), and thus we do not recommend connection - welding in a highly responsible constructions of plates with coffers, except for cover elements. Welding of different types of plastic is cumbersome because of the different flow rates, and therefor different temperature needed for welding. Warming up and connecting is uneven, which is why we recommend using one type of material that is only cassettes to both the bottom and internal partitions.

As a way of connecting, we recommend using bilateral extrusion welding with adhesives - the native material - polypropylene welding wire Ø 4 mm natur/white. In the case of a unilateral connection or an apparent absence of welding possibility, it may be a mechanical connection - twisting by means of bolts. Then, in order to ensure the total leak tightness it is recommended to use seals between the coffers.

How to connect using extrusion welding is graphically represented by the following pictures:

More photos of tanks made by AMARGO can be found under Applications and section TANKS OF RIBBED COFFERS.

If you have any questions - we are at full disposal.