How to package quartz glass tubes to ensure transportation safety

2026-06-09

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  Surface quality is one of the critical characteristics of mechanical components, and its measurement plays a vital role in metrology. In the past, surface roughness was assessed qualitatively through visual inspection or tactile examination using standard samples or reference blocks. Today, roughness testers are primarily employed in the following application areas.

  Regarding the packaging of quartz glass tubes, manufacturers often employ pulp-molded packaging:

  Pulp molding involves using pulp of a specified concentration, with appropriate chemical additives, and employing a mold‑forming machine equipped with a filter screen. By means of vacuum or pressure, the fibers are evenly distributed across the mold’s surface, forming a wet paper mold blank with predetermined geometry and dimensions. The final product is obtained through subsequent dewatering, demolding, drying, and finishing processes.

  With the advancement of pulp‑molding technology—such as the emergence of cavity‑type pulp‑molding processes—this definition has become insufficiently precise and comprehensive. Cavity‑type pulp‑molded products are manufactured using a composite‑mold process, resulting in structures that feature enclosed cavities or are formed into small open‑top containers. Producing such cavity‑structured items requires specialized molding equipment and dedicated manufacturing procedures. These products are commonly used as receptacles or decorative elements, while the composite‑molding approach involves assembling multiple pulp‑molded components of varying shapes during forming to meet specific functional requirements and fulfill intended packaging purposes.

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Why do quartz tube glass products remain durable over time?

Quartz glass tubing exhibits excellent low-temperature resistance and is widely used in second- and third-generation advanced lighting sources. Annual consumption of quartz glass amounts to 2,000 tons, supporting the production of 300 million halogen tungsten lamps and 15 million mercury lamps; it is also employed in the manufacture of xenon lamps, pulsed lamps, atomic‑spectroscopy lamps, and other indispensable light sources for modern technology. Composed of pure silicon dioxide, quartz glass is an essential high-purity material in the electronics industry; crucibles for growing silicon single crystals, diffusion tubes used in integrated circuit fabrication, and various laboratory vessels are all made from quartz glass.

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