Our Company
Frequently asked questions
DIET (Dry Ice Expanded Tobacco) is an innovative technology that physically expands tobacco through a four-stage process: tobacco preparation, infiltration of pressurized liquid CO2 into tobacco cell structures, rapid pressure release causing CO2 to gasify and expand the tobacco outward, and finally a stabilization phase where expanded tobacco is conditioned for structural stability.
DIET technology provides 60-120% high volume expansion, offers lower nicotine ratios and enables value-added product creation. As a physical and natural process, it contains no chemicals, provides energy savings and lower operation costs, while ensuring consistency in product quality
Doyas Machine was established by a team with deep technical knowledge and field experience in tobacco processing technologies, with approximately 8 years of experience. We operate with the responsibility and pioneering spirit of being the first company to produce DIET machines in Turkiye.
Product Models
Frequently asked questions- DIET-Lab: Compact model for small-scale production and R&D studies (50-100 kg/hour)
- DIET-Standard: Industrial model optimized for medium-scale production facilities (300-800 kg/hour)
- DIET-HighCap: Fully automated model with high-volume tobacco processing capacity (1000-2000 kg/hour)
All our models integrate PID-controlled heating, high-precision pressure regulation, automatic CO2 dosing, and safety systems. Key features include high energy efficiency, heat pump-supported systems, automatic process control, easy maintenance and modular design, CE standards compliance, and low CO2 consumption.
Yes. We offer customizable machine settings with special recipe formulation and process parameters suitable for the expansion characteristics of different tobacco types such as Burley, Virginia, Oriental, and Dark Air-Cured.
Installation and Service
Frequently asked questionsInstallation time averages 7-10 days. Requirements include industrial electrical infrastructure, CO2 gas supply line, ventilation and humidity control system, and workspace for operator training.
All our machines are under 2-year manufacturer warranty. We have user-friendly maintenance manuals and digital maintenance tracking systems. Remote connection fault detection and guidance services are also provided. Critical parts are continuously kept in stock and ready for shipment within 48 hours.
After each installation, operators receive on-site or center-based training, ensuring preparedness for all scenarios that may be encountered during operation. Additionally, we provide 24/7 support to our customers through remote access, live support, and field technical service.
Economic Benefits and Costs
Frequently asked questionsIn heat pump integrated systems, up to 35% energy savings are achieved compared to traditional heating systems. CO2 consumption is at 0.3-0.5 m³ per kg levels thanks to optimized recovery systems.
In our developed systems, 60% to 80% CO2 recovery is achieved. This ratio both reduces environmental impact and lowers operating costs.
Production time after order confirmation varies between 6-12 weeks depending on model and capacity. After supply chain, quality control, and testing processes, shipment and on-site installation are performed. Operator training is included with every delivery.
Quality and Safety
Frequently asked questionsDIET processed tobacco stored under appropriate conditions can be used for 12-18 months while maintaining its physical form and content.
We have CE compliance certificates, ISO 9001 quality management system certificate, and safety certificates for process equipment. Additionally, materials and control systems used in production are selected in accordance with relevant international standards.
DIET is not a chemical process - it provides physical expansion. Processed tobacco does not deteriorate in quality; on the contrary, it becomes more economical and balanced. CO2 leaves no residue - it is volatile and completely expelled.
Competitive Advantages
Frequently asked questionsBeing the first company to produce DIET machines in Turkey, possessing not only machine manufacturing but tobacco and process knowledge, scientific and experimental approach to all process stages, high automation with energy efficiency and low maintenance costs, and our ability to develop customer-specific solutions.
Our R&D work focuses on aroma integration technologies for DIET process, energy recovery systems, heat pump systems for low consumption structures, and developing digital twins of the process. We also develop artificial intelligence-based process optimization and data analytics-based decision support systems.
Doyas Machine, as Turkiye's first domestic manufacturer of DIET machines, targets regional leadership. We currently continue our active operations primarily in Turkic Republics and European countries.
Environmental Responsibility
Frequently asked questionsIn our production processes, we prioritize energy recovery, minimum loss and recycling in CO2 usage, low carbon emissions, and working with sustainable tobacco sources. We also adopt an environmentally friendly production model by designing long-lasting, easy-to-maintain systems.
The closed-loop CO2 system provides minimum emissions, lower carbon footprint through energy efficiency, and minimization of waste generation.
