#manufacturing process

Today’s #WorkerWednesday photo dates to around 1945, and shows an operator cleaning scale from a zinc roaster during an early stage in the sulfuric acid manufacturing process at the East Chicago works of DuPont's Grasselli Chemicals Department plant.

Sulfuric acid is and was used by manufacturers of fertilizer, petroleum, textile, iron and steel, paint and pigment, chemical, explosives and other industries.In the process seen here, finely ground zinc sulfide ore is blown into the roaster, where it is burned with air to produce sulfur dioxide and zinc oxide. The zinc oxide was be reduced to zinc metal and the sulfur dioxide was converted into sulfuric acid by either contact or chamber process.

Images from book, The Thunderbird Story (1963)

Not all tapes are made for electronics manufacturing.

If your process involves solvents or soldering, polyimide tape is the safer choice.

In the world of industrial production, understanding core processes is essential for informed procurement. So, what is an extrusion line? It is an integrated manufacturing system that continuously forces raw polymer material through a shaped die to produce profiles, pipes, sheets, or films of uniform cross-section. The line comprises several synchronized components: the extruder (which melts and pressurizes the material), the die (which shapes it), and downstream equipment including cooling tanks, pullers, and cutters that finalize the product dimensions.

The HZH Systems Approach

HZH engineers complete extrusion solutions designed for seamless component integration. We understand that the performance of the entire line depends on the precise synchronization of every stage.

Our systems are built to handle a wide range of thermoplastics, from standard PVC to advanced engineering polymers. Partner with HZH for extrusion lines that deliver the consistency, efficiency, and reliability your production demands.

In the optimization of polymer profiles, functional versatility often requires a composite approach. Integrating disparate material properties—such as rigid strength and flexible sealing—into a single component is achieved through plastic co extrusion. This process is not only essential for product performance but also for cost-reduction strategies, allowing manufacturers to utilize recycled cores capped with premium virgin materials for a flawless finish.

The HZH Technical Standard

HZH delivers the engineering expertise required to master this complex layering. We specialize in designing die heads and screw configurations that ensure stable laminar flow and perfect interfacial adhesion between layers.

In the realm of industrial manufacturing, consistency is the metric of success. For producers of profiles, pipes, and complex tubing, the stability of the plastic extrusion production line dictates the profitability of the entire operation. This system is not merely a collection of machinery; it is the heartbeat of high-volume output, requiring seamless synchronization between the extruder, the die, and downstream cooling equipment to ensure uniform product quality.

Engineering Reliability with HZH

At HZH, we prioritize the synergy between mechanical precision and control logic. We understand that maximizing uptime is critical for our B2B partners.