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Design of Molds and Bodies for Household Detergent Products, From Idea to Mass Production
When you hold a bottle of dishwashing liquid or bleach in your hand, what you see is the result of a long and precise journey. The industrial design team of Sahi Rasa Company completed this journey for a full range of household detergent products: 900 g and 3750 g dishwashing liquid, 500 g and 3750 g hand wash liquid, 1000 ml and 4000 ml bleach, glass cleaner, and stove cleaner.
This project was carried out under a contract from Sahi Rasa’s Industrial Department for the establishment of a detergent factory in the Kurdistan Region of Iraq. Below, every stage of this process is described in full detail without any summarization.
Creativity is about making the ordinary look worth noticing.
Engineering is about creating something so striking that people can’t help but stare.
Creativity
At the very beginning, the design team did not think about mold limitations or machinery. They thought about human feeling and perception. Creativity at this stage meant finding a visual language that could simultaneously convey cleanliness, trust, cleaning power, and gentleness. For the smaller bottles, a sense of lightness and comfortable grip was sought. For the larger bottles, a sense of stability and high quality. For the bleach bottles, a sense of safety and strength. For the glass cleaner and stove cleaner, a sense of precision and clarity. Every initial form emerged from this artistic vision — a vision that did not see the product merely as a container, but as a carrier of the brand’s message.
Ideation
After the creative atmosphere was formed, ideation sessions were held. In these sessions, dozens of different ideas for body form, label placement, cap type, pouring method, and even the tactile feel of the bottle surface were discussed. Ideas were sketched on paper and whiteboards, then evaluated in terms of feasibility, differentiation from competitors, and suitability for the target consumer culture. Some ideas were discarded, some were combined, and a number were selected as the main directions for the next stages.
Sketching and Initial Design
The selected ideas entered the sketching phase. Designers first drew dozens of initial concepts by hand and then developed them in two-dimensional software. In these sketches, the height-to-width ratios, body curves, finger placement when holding the bottle, shoulder angle of the bottle, and the proportion between the cap and the body were carefully examined. The initial designs were revised many times until they reached a point where they were both aesthetically defensible and ergonomically logical.
Three-Dimensional Design
The approved sketches were then transferred into three-dimensional space. Precise models of each bottle were created with full dimensional details, wall thicknesses, curve radii, mold pin locations, and the seating surface for the cap. At this stage it became possible to fully rotate the model, study light and shadow on the surface, and evaluate the real volume of the product. The three-dimensional design became the foundation for all subsequent stages — from sample printing to mold manufacturing.
Three-Dimensional Printing for Testing
The three-dimensional models were sent to 3D printers so that physical samples could be produced in real size. These samples were held in the hand, placed on a table, examined under light from different angles, and evaluated for ease of use, stability, and overall feeling. Three-dimensional printing made it possible to identify form and ergonomic issues before any cost was spent on manufacturing metal molds.
Revision
The results obtained from testing the printed samples returned to the design table. Some curves were made sharper or softer, the center of gravity of certain bottles was adjusted, thickness was modified in specific areas, and details of the cap connection were improved. Revisions continued until both the design team and the client reached complete agreement.
Final Design
After all corrections were applied, the final design of each product was locked. Complete technical drawings were prepared, including all dimensions, tolerances, surface specifications, and mold details. These drawings became the basis for mold manufacturing and industrial production.
Material Selection
Considering the chemical nature of each product, the appropriate material was selected. Resistance to surfactants, acids, and bleaching agents, the required transparency or opacity, mechanical strength, and the behavior of the material during the injection process all played a role in this decision. The final material had to be compatible with the bottle contents while also delivering the desired visual quality.
Material Selection
Injection Mold Manufacturing
Based on the final design, injection molds were designed and manufactured. Mold design included the gating system, cooling system, number of cavities, parting line location, and ejection details. The goal was to create molds capable of producing parts with uniform quality, clean surfaces, and minimum waste under industrial production conditions.
Prototyping
The first injections were made from the new molds. Real samples were carefully examined for dimensions, surface quality, wall thickness uniformity, cap performance, and overall strength. Any deviation from the technical drawings was identified and, if necessary, minor corrections were made to the molds.
Selection of Suitable Cap
For each product, a cap appropriate to its use was selected and finalized. Ease of opening and closing with one hand, complete leak-proof sealing, resistance to internal pressure, and full visual and dimensional harmony with the bottle body were the main criteria. The caps were also matched with the body in terms of material and color.
Surface Modifications
At this stage, the final surface texture of the bottles was determined. Some surfaces were made glossy, some matte, and some a combination of both. These surface modifications not only affected visual beauty but also changed the tactile feel of the product and helped the consumer perceive higher quality.
Mass Production
After final approval of all samples and details, the mass production line was activated. The bottles were produced in industrial quantities with uniform quality and appropriate speed. Quality supervision continued throughout production to ensure that the final product was exactly what had been approved during the design and prototyping stages.
This complete path , from the first spark of creativity to mass production, shows how real industrial design can bring art, engineering, and manufacturing together in one coherent process.
The industrial design team of Sahi Rasa is ready to follow the same path for your detergent and hygiene products.
Final Bottle designs that reach mass production:
Industrial design is not merely about creating a beautiful shape. It is the precise meeting point of art, engineering, and industrial production — where a simple bottle becomes a powerful messenger of brand quality, user experience, and manufacturing efficiency.
At Sahi Rasa, our industrial design team transforms ideas into real, producible, and market-ready packaging. From the first creative spark to final mass production, we manage every step with the same care and professionalism that leading factories in the region deserve.
If you are planning to launch or upgrade detergent, cleaning, or hygiene products and need professional packaging and mold design that stands out on the shelf and performs perfectly on the production line, we are ready to start.
Contact Sahi Rasa Industrial Design Team today
Let’s design packaging that your customers will remember and your production line will love.
