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The world of photography has seen a remarkable resurgence of analog film, captivating both seasoned photographers and digital natives alike. In this article, we embark on a fascinating journey to the heart of Kodak's manufacturing plant in Rochester, New York, to uncover the intricate process behind the creation of this beloved medium.
Analog film photography, once deemed a relic of the past, has experienced an extraordinary comeback. The demand for old analog cameras has soared, with prices reaching astronomical heights. But what does this renewed interest in analog film mean for its availability? Are manufacturers simply selling off old stockpiles, or is there a sustainable manufacturing process in place for the future?
Kodak, a name synonymous with film, has graciously granted us access to their manufacturing plant to witness the fascinating process firsthand. We delve into the three primary manufacturing stages required to create 35mm film: the support, light sensitivity, and packaging.
At the core of film lies the support, often overlooked but crucial for its functionality. This support, made of a polymer called ESTAR, undergoes a meticulous manufacturing process. We explore the continuous by axial orienting process, which stretches the polyester base in two dimensions, granting it exceptional strength and durability.
The light sensitivity of film is achieved by applying an emulsion over the support, rendering it responsive to light. This process, involving laminar flow, is a fascinating blend of chemistry and physics. We delve into the intricacies of creating this light-sensitive layer, ensuring the film captures the desired image.
Once the film is light-sensitive, it must be packaged carefully to prevent exposure to light. This delicate process is performed in complete darkness, from coating to canning. We uncover the challenges and solutions involved in maintaining the integrity of the film throughout this critical stage.
One remarkable aspect of Kodak's manufacturing process is the seamless collaboration between generations. The older, experienced employees mentor and guide the younger generation, fostering a sense of ownership and excitement. This partnership between the two generations not only ensures the continuation of Kodak's legacy but also instills confidence in the future of American manufacturing.
We journey through the initial stages of the manufacturing process, where raw materials are transformed into fine powder. We witness the grinding of pellets, the precision of reactors, and the meticulous control of moisture and temperature. This stage lays the foundation for the creation of the film support.
The molten polymer, carefully controlled in temperature and pressure, is then extruded through a complex screw system. We explore the fascinating mechanics of this process, from the initial melt screw to the intricate filtration system. This stage ensures the purity and uniformity of the material, crucial for the film's quality.
As the molten polymer reaches the die, it begins to take shape. We witness the extrusion process, where the material is evenly distributed and cooled, ensuring optical clarity. The film base is then coated with various layers, each serving a specific purpose, such as primer, anti-static, or conductive layers.
The drafting and tentering process is where the film's strength is born. We explore the stretching and tensioning mechanisms that align the polymer molecules, creating a tough and durable film. This stage requires precise control of temperature, tension, and speed to achieve the desired properties.
After stretching, the film undergoes further processing, including heat setting and cooling. The final touches, such as cutting the ribs and applying additional coatings, are meticulously performed to ensure the film meets the highest quality standards. We witness the final roll being wound, ready for packaging and distribution.
The resurgence of analog film photography has sparked curiosity and fascination, leading us to explore the intricate manufacturing process behind this beloved medium. From the support to the light sensitivity and packaging, each stage requires precision, expertise, and a deep understanding of chemistry and physics. Kodak's commitment to quality, combined with the collaboration between generations, ensures the continued availability and evolution of analog film for years to come. So, let's embrace this analog revival, pick up an old camera, and capture memories in a physical form, just like the pioneers of photography once did.
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