Tanks for water storage made in non-toxic polyethylene (PE). e 100% recyclable.

The PE used is added with special colouring for resist UV rays thus avoiding photosynthesis phenomena, the tanks are designed for installation above ground.

La monobloc structure, without joints or welding, combined with the thickness gives it a particular mechanical resistance.

TANKS FOR OUTDOOR WATER STORAGE

H2O V

VERTICAL CYLINDRICAL TANKS
UNDER CLOSED SKY

H2O VPAN

VERTICAL CYLINDRICAL TANKS - PANETTONE

H2O VP

VERTICAL TANKS -
SQUARES

H2O OR

HORIZONTAL CYLINDRICAL TANKS

UNDERGROUND WATER STORAGE TANKS

H2O ORINTC

HORIZONTAL CYLINDRICAL TANKS
WRINKLED

Food-grade polyethylene tanks | Roplast Bergamo:

Il market of tanks for the storage and handling of liquids, powders and granules It represents a key component in modern industrial supply chains, thanks to its ability to combine efficiency, safety, and operational versatility. These specialized containers must guarantee the chemical integrity of their contents, mechanical resistance, compatibility with the stored substances, ease of maintenance, and regulatory compliance, especially when dealing with sensitive storage such as chemicals or food products.

The production of such tanks often involves the use of advanced polymeric or composite materials and the adoption of sophisticated molding technologies, including rotational molding (rotomoulding). This process allows for the production of hollow bodies without welded joints, reducing critical points and internal stresses, with excellent consistency and flexibility in formats. Roplast

In the typical rotational molding process, a quantity of plastic material (powder or granules) is inserted into a hollow mold that rotates on one or two axes. During the heating phase, the material gradually adheres to the mold walls, forming a uniform layer. After cooling, the piece solidifies and is extracted, ready for use. A popular feature is that, being free of welds, the finished piece has greater structural uniformity and fewer weak points. Roplast

The advantages of this technology include:

  • the production of manufactured goods in small batches at acceptable costs;

  • reducing the need for manual finishing;

  • minimizing material waste;

  • the simplification of molds compared to other complex processes. Roplast

A wide range of industrial sectors exploit these reservoirs and related technologies:

Sector Typical applications
Chemical Tanks for storing reagents, corrosive substances, aggressive liquids, acidic or alkaline solutions
Food / Drinks Containers for liquid ingredients, food powders, mixtures, temporary storage of raw materials
Industry Tanks for solvents, industrial oils, washing systems, process liquids
Waste / Ecology Temporary tanks for wastewater, storage of residual liquids, modular containers for separate waste collection or for liquid waste
Agriculture Tanks for fertilizers, pesticides, nutrient solutions, liquid mixtures for irrigation, storage of powders or granules (fertilizers, seeds)
Construction / Building Sites Mobile containers for liquid solutions (water, chemical mixtures), construction site tanks for process fluids, temporary water reserves

 

Food-grade polyethylene tanks | Roplast Bergamo

The adoption of these modular and industrially printed tanks allows for scalable and customizable solutions: variable dimensions, adapted thickness, chemical and mechanical compatibility, and the possibility of adding accessories (caps, valves, nozzles, control systems).

In an environment where environmental and safety regulations are becoming increasingly stringent, it is essential that tanks are designed with compatible materials, appropriate certifications, and rigorous quality control. The product life cycle must be considered from the outset: recyclable materials, the ability to repair and disassemble, and a reduction in overall environmental impact.

In short, the production of tanks for liquids, powders, and granules represents a meeting point between materials engineering, advanced molding technologies, and real-world application needs in various sectors. Thanks to modular solutions, well-designed molds, and attention to the chemical and physical characteristics of the final products, it is possible to effectively respond to the growing demands of the industrial and environmental markets..

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Production of bells for separate waste collection:

A niche technology, rotational molding has technical characteristics that make it the protagonist of the production of small batches and large hollow bodies. Spread throughout the world with strong growth rates, it is particularly appreciated by planners and designers.

Lo rotational molding - also known as rotomoulding – is a technology for processing plastic materials at low pressure and high temperature, based on the adhesion of plastic materials to rotating hollow moulds.

Rotational molding is used for the production of hollow bodies, which do not require subsequent welding and assembly phases and are practically tension-free.

The phases of the rotational molding process

Le phases of a rotational molding process are the following:

  • loading the mold with polymeric material, mostly in fine powder, but also in granules or liquid form;
  • the mould, once loaded and closed, is heated (for example in an oven) and rotated along one or two axes, so that the polymeric material introduced into it can adhere to the walls of the mold itself, taking on its shape. It is very important to correctly manage the times of this heating and rotation phase: if heated for too long, in fact, the polymeric material could degrade; on the other hand, too short times could have the consequence of obtaining a plastic material that is not sufficiently homogeneous;
  • cooling of the mold, always rotating, so that the polymer solidifies assuming the desired shape. Rotation is suspended when the polymer material has hardened sufficiently. In this phase, the polymeric material shrinks, which facilitates the subsequent phase of extracting the product from the mold. In this phase, a change in the apparent density of the polymer also occurs;
  • the mold is then opened and the resulting piece is extracted.

Advantages of rotational molding

It is a niche technology in a certain sense competitive with other polymer processing technologies, such as blow molding, or thermoforming, compared to which it can offer some advantages.

  • simplicity and functionality,
  • eliminating the need to resort to operations finish,
  • relatively low production of waste,
  • process flexibility with the possibility of producing small batches at acceptable costs,
  • relatively economical manufacturing of moulds,
  • low costs of improved machinery, molds and accessories,
  • applications are continually increasing.

Applications of rotational molding

It is a technology used mainly to produce small batches of mostly large-sized products, such as large containers, barrels, underground tanks, tanks for the storage of chemical substances, fuel tanks, oil tanks, tanks, water purification tanks, dustbins, bins and production of bells for separate waste collection. Given its characteristics, this technology is also used for production of products for the most varied fields of application: armchairs, furniture parts and furnishing items, lamps, automotive components, medical and healthcare products (stretcher parts, medical kit boxes, oxygen facial masks), tools for agriculture and gardening, the toy industry and leisure items (parts of dolls, rocking horses, balls, toy houses), details of pleasure boats, details of floor polishers, tool boxes, manhole covers, and other items.

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