
In the complex and resource-driven world of *Factorio*, mastering the production of plastic bars is a crucial step for advancing your factory and unlocking more sophisticated technologies. Plastic bars are a versatile intermediate product, essential for crafting advanced components like processing units, which are vital for automation and expansion. To produce plastic bars, players must first establish a petroleum extraction and refining system, as crude oil is the primary raw material. This involves setting up oil wells, refineries, and chemical plants to process the oil into petroleum gas, which is then converted into heavy oil. The heavy oil is further refined into light oil, and finally, combined with water in a chemical plant to produce plastic bars. Efficiently scaling this production chain requires careful planning of resource logistics, power supply, and factory layout to ensure a steady and sustainable output, enabling players to tackle the game’s later challenges with confidence.
| Characteristics | Values |
|---|---|
| Required Items | 1 Petroleum Gas, 1 Coal |
| Crafting Recipe | 1 Plastic Bar = 1 Petroleum Gas + 1 Coal |
| Crafting Time | 0.5 seconds |
| Crafting Location | Chemical Plant |
| Technology Required | Advanced Oil Processing |
| Stack Size | 200 |
| Energy Consumption (Chemical Plant) | 4.5 MJ |
| Fluid Input (Petroleum Gas) | 10 units |
| Fluid Input (Coal) | Not directly used as fluid, but 1 Coal is consumed per recipe |
| Fluid Output | None |
| Intermediate Product | Heavy Oil (produced from Petroleum Gas, then converted to Light Oil, and finally to Plastic Bar) |
| Alternative Recipe | Not available without mods |
| Use Cases | Production of Red Circuits, Blue Circuits, Processing Units, Low-Density Structure, and other advanced items |
| Tips | Ensure a steady supply of Petroleum Gas and Coal; consider using modules and beacons to optimize production |
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What You'll Learn
- Gather Raw Materials: Collect petroleum gas, process into light oil, then heavy oil for plastic production
- Build Chemical Plants: Set up refineries and chemical plants to convert heavy oil into petroleum gas
- Produce Plastic: Use assemblers with petroleum gas to create plastic bars efficiently
- Optimize Production: Automate with belts, bots, and beacons for high-throughput plastic bar manufacturing
- Storage Solutions: Use chests, logistic bots, or trains to manage and distribute plastic bars effectively

Gather Raw Materials: Collect petroleum gas, process into light oil, then heavy oil for plastic production
Petroleum gas is the cornerstone of plastic production in Factorio, but it’s not directly usable in its raw form. To transform it into a usable resource, you must first extract it from oil fields using pumping jacks. Each oil field depletes over time, so plan for multiple extraction sites. Once collected, petroleum gas is fed into an oil refinery, where it begins its journey toward becoming heavy oil—the critical ingredient for plastic bars.
The refining process is a delicate balance of ratios and throughput. In the oil refinery, 10 units of petroleum gas produce 4 units of light oil and 4 units of heavy oil. However, light oil is an intermediate step, not the end goal. To maximize heavy oil output, ensure your refinery is continuously supplied with petroleum gas and that light oil isn’t bottlenecking the process. Advanced players often use buffer chests to store excess light oil temporarily, preventing backups.
Heavy oil is the linchpin for plastic production, but its creation is resource-intensive. Each unit of heavy oil requires 2.5 units of petroleum gas, meaning efficient extraction and refining are non-negotiable. Pair your refineries with dedicated pipelines to minimize transport delays, and consider using underground belts or fluid wagons for long-distance delivery. Without a steady supply of heavy oil, your plastic bar production will grind to a halt.
A common mistake is underestimating the scale of raw material needs. For every 100 plastic bars, you’ll need 200 heavy oil, which in turn requires 500 petroleum gas. To sustain large-scale production, automate every step—from pumping jacks to refineries. Use productivity modules in refineries to increase output, and monitor fluid levels with in-game sensors to avoid shortages. Efficiency here directly translates to faster, smoother plastic bar production.
Finally, while petroleum gas is abundant, it’s not infinite. Plan for sustainability by exploring and securing multiple oil fields early in the game. Once a field is depleted, dismantling and relocating pumping jacks is a tedious but necessary task. By treating raw material gathering as a long-term strategy, you’ll ensure a consistent supply of heavy oil and, ultimately, a steady stream of plastic bars for your Factorio empire.
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Build Chemical Plants: Set up refineries and chemical plants to convert heavy oil into petroleum gas
Heavy oil is a byproduct of crude oil processing in Factorio, and while it might seem like a nuisance, it’s actually a valuable resource for producing plastic bars. The first step in harnessing its potential is to convert it into petroleum gas, a critical intermediate product. To achieve this, you’ll need to set up refineries and chemical plants in a strategic layout. Refineries process heavy oil into light oil and petroleum gas, with a ratio of 1 heavy oil producing 10 petroleum gas and 10 light oil. This means every unit of heavy oil you refine maximizes your resource output, making it a cornerstone of your plastic production chain.
Once your refineries are operational, the next step is to integrate chemical plants into the process. Chemical plants are essential for converting petroleum gas into plastic bars, but they require additional inputs like light oil and water. For every 10 petroleum gas, you’ll need 5 light oil and 20 water to produce 10 plastic bars. This highlights the importance of balancing your refinery and chemical plant outputs to avoid bottlenecks. A well-designed setup ensures a steady flow of raw materials, minimizing downtime and maximizing efficiency.
A practical tip for optimizing this process is to cluster refineries and chemical plants close together to reduce the distance between production stages. Use underground belts or pipes to transport fluids, as they eliminate the need for long, winding conveyor belts. Additionally, consider using a main bus or modular design to scale your setup as your factory grows. For example, a 2:1 ratio of refineries to chemical plants often works well, ensuring you have enough petroleum gas and light oil to feed your plastic production line.
One common mistake players make is underestimating the water requirement for chemical plants. Water is a critical resource in this process, and failing to secure a reliable supply can halt production. Set up offshore or regular pumps near your chemical plants to ensure a steady water flow. If water is scarce, consider building a dedicated water extraction system or using storage tanks to buffer supply. Proper resource management here can make or break your plastic bar production.
Finally, monitor your production ratios regularly to fine-tune your setup. Use the game’s built-in statistics or mods like FNEI to track input and output rates. If you notice petroleum gas or light oil accumulating, adjust your refinery output or add more chemical plants. Conversely, if your chemical plants are idling, increase heavy oil processing. This iterative approach ensures your setup remains efficient as your factory scales. With a well-optimized refinery and chemical plant system, you’ll have a steady supply of plastic bars to fuel your Factorio ambitions.
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Produce Plastic: Use assemblers with petroleum gas to create plastic bars efficiently
In Factorio, producing plastic bars efficiently is a cornerstone of mid-to-late game progression, and leveraging assemblers with petroleum gas is the most streamlined method. Petroleum gas, a byproduct of oil refining, serves as the primary ingredient for plastic production. To begin, ensure your oil refining setup is optimized to produce a steady supply of petroleum gas. Each assembler requires 1.5 units of petroleum gas to produce one plastic bar, making it crucial to balance your oil processing output with your plastic demand.
Setting up dedicated assembler lines for plastic production is straightforward but requires careful planning. Place assemblers in a row, ensuring they are fed by a continuous supply of petroleum gas via pipes. Use underground pipes to avoid clutter and maintain a clean, efficient layout. Each assembler operates at a crafting speed of 0.5 seconds per item, so scaling up production is as simple as adding more assemblers to the line. However, be mindful of the power consumption—each assembler draws 90kW, so ensure your power grid can handle the load.
Efficiency extends beyond mere production; it includes minimizing waste and maximizing throughput. Pair your assemblers with a buffer chest to store excess plastic bars, preventing bottlenecks in downstream production chains. Additionally, consider using productivity modules in your assemblers to increase output without additional resources. Three productivity modules (speed or productivity) in a single assembler can reduce material costs significantly over time.
A common pitfall is underestimating the demand for plastic bars as your factory grows. Plastic is essential for advanced components like processing units and robots, so plan for scalability early. Start with a modest setup of 10-15 assemblers, then expand as needed. Monitor your petroleum gas consumption and adjust oil refining accordingly to avoid shortages. By integrating these strategies, you’ll create a robust, efficient plastic production line that supports your factory’s long-term growth.
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Optimize Production: Automate with belts, bots, and beacons for high-throughput plastic bar manufacturing
In Factorio, plastic bars are a critical intermediate product, essential for advanced manufacturing. To achieve high-throughput production, automation is key. The foundation of any efficient setup lies in the strategic use of belts, bots, and beacons. Belts provide the backbone for material transport, ensuring a steady flow of raw materials like petroleum gas and coal into cracking units and assembling machines. Bots, particularly construction and logistic bots, streamline the delivery of intermediate goods and the expansion of production lines. Beacons, when paired with modules, amplify the productivity of assembling machines, reducing the time and resources required per plastic bar. Together, these elements form a synergistic system that maximizes output while minimizing manual intervention.
To begin optimizing plastic bar production, start by designing a belt-based transport system that minimizes bottlenecks. Use splitter prioritization to ensure that petroleum gas, the primary ingredient, is always available at cracking units. For instance, a 4:2 ratio of petroleum gas to water is ideal for efficient cracking into light oil and hydrogen. Once light oil is produced, direct it via belts to chemical plants for conversion into plastic. Avoid overloading belts by calculating the exact throughput required—a single yellow belt can transport 45 items per second, while a blue belt handles 72. Use underground belts to cross paths and keep the layout compact, reducing the distance materials travel.
Bots play a transformative role in scaling production. Set up a robust logistic network with requesters and storage chests to ensure that assembling machines never run out of light oil or coal. Construction bots can rapidly expand your factory by placing new machines and infrastructure, while logistic bots handle the intricate dance of delivering resources. For example, dedicate a fleet of bots to supply chemical plants with light oil, ensuring uninterrupted plastic production. Pair this with a well-organized roboport network to maintain bot coverage across your entire factory.
Beacons are the secret weapon for achieving peak efficiency. Place speed or productivity modules in assembling machines and surround them with beacons to boost their output. A single productivity module reduces material consumption by 12.5%, while speed modules increase production rate by 50% (with associated power and pollution trade-offs). For plastic bar manufacturing, prioritize productivity modules in chemical plants to minimize light oil usage. Arrange beacons in a 3x3 grid around each machine to maximize their effect, ensuring that every unit operates at its highest potential.
Finally, monitor and iterate on your setup to address inefficiencies. Use the in-game production statistics to identify bottlenecks—whether it’s a belt running at full capacity or a machine waiting for resources. Gradually transition from yellow to red and blue belts as production scales, and expand your bot network to handle increased demand. By combining belts for transport, bots for logistics, and beacons for optimization, you’ll create a plastic bar production line that’s not just efficient, but future-proof. This approach ensures that your factory can meet the demands of late-game Factorio, where plastic bars are indispensable for advanced components like processing units and rocket parts.
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Storage Solutions: Use chests, logistic bots, or trains to manage and distribute plastic bars effectively
In Factorio, managing plastic bars efficiently is crucial for scaling production. One of the simplest yet effective storage solutions is using chests. Start by placing wooden or steel chests near your plastic bar production line. Wooden chests are cheaper but have limited capacity, while steel chests offer more storage space. Organize your chests by dedicating specific ones for input and output to avoid bottlenecks. For instance, place two steel chests—one for incoming petroleum gas and one for outgoing plastic bars—to streamline the process. Labeling chests with in-game tags like "Plastic Bars - Input" or "Plastic Bars - Output" can further enhance clarity and efficiency.
While chests are straightforward, logistic bots offer a more dynamic solution for advanced players. Set up a logistic network by placing roboports and requesting plastic bars via logistic chests or storage tanks. Configure the network to prioritize plastic bar distribution to key areas like construction sites or assembly machines. For optimal performance, ensure your bot network has enough charging stations and that your roboport coverage overlaps to prevent dead zones. A well-designed logistic bot system can automate the entire supply chain, freeing you from manual micromanagement. However, be mindful of power consumption and bot congestion, especially in large factories.
For megabases or sprawling factories, trains become the go-to storage and distribution solution. Designate a central plastic bar depot with multiple train stations to handle incoming and outgoing cargo. Use cargo wagons to transport plastic bars in bulk, reducing the number of trips needed. Implement a train scheduling system to ensure efficient delivery to remote outposts or satellite factories. For example, set up a train route that collects plastic bars from the main production hub and delivers them to construction sites on demand. While trains require more setup, they excel in handling high volumes and long distances, making them ideal for late-game scenarios.
Comparing these methods, chests are best for small-scale setups due to their simplicity and low resource cost. Logistic bots shine in mid-game factories where automation is key but train infrastructure isn’t yet established. Trains, however, dominate in end-game scenarios where scale and efficiency are paramount. The choice depends on your factory’s size, layout, and stage of development. Combining these solutions—such as using chests for local storage, bots for intermediate distribution, and trains for long-haul transport—can create a robust, tiered storage system tailored to your needs.
To maximize efficiency, consider these practical tips: Always buffer your plastic bar production with extra storage to account for fluctuations in demand. Use filters in logistic chests to prevent bots from wasting time on unnecessary items. For train systems, ensure each station has clear input and output designations to avoid cargo mixing. Regularly audit your storage solutions as your factory grows, upgrading from chests to bots or trains as needed. By thoughtfully integrating these methods, you’ll ensure a steady, reliable supply of plastic bars to fuel your Factorio empire.
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Frequently asked questions
To make plastic bars, you need petroleum gas, which is processed into light oil, and then further refined into heavy oil. Heavy oil is then cracked into plastic bars using an oil refinery.
Build an oil refinery and connect it to a source of heavy oil. Ensure the refinery has access to water for cooling. Set the refinery to crack heavy oil into plastic bars by selecting the appropriate recipe in the refinery's interface.
One unit of heavy oil produces 1.5 units of plastic bars when cracked in an oil refinery.
Plastic bars are a direct crafting material used in various recipes, such as producing red and green circuits, advanced oil processing, and creating productivity modules. No further processing is required.
































