What is Just-in-time?

The just-in-time (JIT) approach, also known as lean manufacturing, is an industrial management philosophy focused on producing only what is needed, when it is needed, and in the exact quantity required. Its primary goal is to minimize inventory, waste, and idle time while optimizing workflow across the entire supply chain.

In the plastics manufacturing sector, just-in-time means closely aligning production with actual customer demand—avoiding overproduction, unnecessary storage, and the costs associated with excess stock. This methodology relies on agile planning, stable processes, seamless communication, and strong coordination between suppliers, manufacturers, and clients.

At Plásticos Lezo, we apply lean manufacturing principles as part of our commitment to efficiency, quality, and customer satisfaction. We work with demand forecasts, scheduled supply agreements, and make-to-order systems, adjusting our production and logistics cycles to deliver plastic components exactly when our clients need them—without overstocking or shortages.

The JIT model offers several key advantages:

• Inventory reduction: for both raw materials and finished products.

• Greater production flexibility: enables fast adaptation to changing demand.

• Lower storage and logistics costs.

• Reduced risk of product obsolescence or degradation.

• Continuous improvement and quality control at every stage.

Implementing a just-in-time system in industrial environments requires reliable production capabilities, short lead times, and a robust logistics infrastructure. It also depends on long-term trust and collaboration among all stakeholders.

At Plásticos Lezo, we combine JIT principles with digital tools, order traceability, and operational flexibility, allowing us to respond efficiently to scheduled deliveries, urgent requests, or volume changes. For recurring or serial projects, we plan staggered deliveries with our clients to streamline their operations while ensuring consistent supply.

Lean manufacturing is not only about producing “on time”—it’s also about producing right the first time, avoiding rework, scrap, or delays. That’s why we align our JIT practices with our quality systems, process standardization, and investment in advanced injection technology and automation.

In short, just-in-time represents a production model centered on agility, coordination, and customer service. At Plásticos Lezo, we integrate this mindset into our daily operations to deliver not only high-quality plastic parts, but also an efficient, timely, and value-driven supply chain response.