Sleeve Worker (Glass Fiber Manufacturing)
すりーぶこう（がらすせんいせいぞう）
Industry & Occupation
Classification
Summary
Manufacturing technician who melts glass raw materials, draws thin glass fibers, applies braiding or coating, and winds them into sleeve-shaped products.
Description
Sleeve workers mix and melt glass raw materials and use specialized bushing devices to draw thin glass fibers. The drawn fibers are bundled or braided while applying coating treatments to improve heat resistance and strength, and finally wound to specific lengths and thicknesses. Production lines often operate 24 hours a day, involving shift work for equipment operation and monitoring, product dimension and strength inspections, machine adjustments and simple maintenance during abnormalities, and safety and health management.
Future Outlook
While some domestic general manufacturing shows production reduction trends, demand for glass fiber products as high-performance composite materials remains stable, and demand for specialized technicians is expected to be maintained.
Personality Traits
Attentive / Cooperative / Dexterous with hands and good at detailed work / Patient
Work Style
Career Path
Manufacturing operator → Group leader/Leader → Production technology staff → Quality control staff → Factory manager
Required Skills
Coating machine operation / Glass fiber manufacturing equipment operation / Product inspection (dimensions and strength) / Safety and health management
Recommended Skills
Basic machine maintenance knowledge / Basics of QC techniques / Forklift driving skills
Aptitudes (Strengths Preferred)
| Item | Description |
|---|---|
| Attention to Detail & Accuracy | High attention to detail is required to maintain uniform glass fiber thickness and coating thickness. |
| Physical Stamina & Endurance | Physical stamina is required due to long hours of standing work and high-temperature environments. |
Aptitudes (Weaknesses Acceptable)
| Item | Description |
|---|---|
| Creativity & Ideation | New process ideas or creative thinking are not particularly required. |
| Numerical & Quantitative Analysis | Advanced mathematical analysis is not particularly necessary. |
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