Plastic steel door overview

Plastic steel doors and windows first emerged in the late 1950s when they were developed in West Germany, with commercial production starting in 1959. Initially, these doors and windows featured a simple, single-cavity design that was somewhat basic and unrefined. However, the global energy crisis of 1972 spurred the widespread adoption of plastic steel doors and windows designed for better energy efficiency, which had already been introduced in the early 1970s. This surge in demand also prompted advancements in the production technology of the profiles, leading to continuous improvements in their performance. From the original single-cavity structures, they evolved into more sophisticated designs with three or even four cavities, significantly boosting the popularity of plastic steel doors and windows across Europe and Asia. For instance, in Germany, the usage of plastic steel doors and windows accounts for 52% of the total door and window market, while in Austria it reaches 48%. Countries like Switzerland, the UK, France, and Italy also show substantial usage rates, often exceeding 10-20%. In the United States, the adoption of steel doors and windows began in the late 1970s, with an annual growth rate of over 15%. In contrast, China’s journey with plastic steel doors and windows started later. During the 1970s, the quality of calcium-plastic doors and windows was not up to par. It wasn't until 1983, when new equipment was introduced, that real plastic steel doors and windows began to be manufactured. Initially, the technology was not highly advanced, and most profiles were either single-cavity or two-cavity designs. Over time, as the industry matured in the 1990s, China saw the emergence of numerous extrusion machines and molds, along with manufacturers of profiles and assembly equipment. By 1996, the arrival of advanced equipment from newly established manufacturers further propelled the industry forward. Today, there are over 2,000 extrusion lines nationwide, more than 400 of which are high-end models. Additionally, there are over 3,000 assembly plants, with a 1999 profile production capacity of 800,000 tons and an annual assembly capacity of 60 million square meters for doors and windows. Plastic steel doors and windows have now become one of the fastest-growing industries in China, gaining increasing acceptance among users due to their superior performance. Another significant advantage of plastic steel doors and windows is their excellent soundproofing capabilities. A single-layer glass window can achieve an average sound insulation level of 24 decibels, while double-glazed windows improve this to 30 decibels. This makes plastic steel doors and windows ideal for environments where noise reduction is essential.

Strain Gauges

Incorporating the strengths of both confectioned copper foil and Evan film, our sensor materials are an industry breakthrough for high-level precision sensors. Engineered with a fully sealed laminated foil and polyimide film structure, these materials offer a dual advantage of temperature and creep self-compensation, ensuring relentless accuracy over time.

The clever design sports high peel strength and substrate rigidity, paired with low shrinkage and excellent creep consistency, resulting in reliable repeatability and minimal hysteresis. A special cover layer enhances sealing, safeguarding the sensor's performance and making it well-suited for sensitive applications requiring stability, such as C3 level precision tasks.

Calibration is a breeze, as heat treatment allows fine-tuning of the temperature characteristic sensitivity coefficient. This adaptability makes our material perfect for non-external compensation sensors operating with a tight tolerance range of 0.03% to 0.05%.

By streamlining these two versatile materials' properties, we've developed a product that doesn't just meet but exceeds the demanding requirements for precision sensor systems. Choose our laminate for an uncompromised, stable, and protected sensing experience.

Strain Gauges,Accuracy Load Cell,Parallel Grid Strain Gauge,Pressure Sensor Use Gauges

Zhejiang Nanhua Electronic Technology Co., Ltd , https://www.nhloadcell.com