ChinaAutoRegs｜GB/T 7690.1-2013英文版/English/翻译/增强材料 纱线试验方法 第1部分：线密度的测定
Reinforcements – Test Method for Yarns – Part 1: Determination of Linear Density

1 SCOPE

This Part of GB/T 7690 specifies the method for the determination of the linear density of glass-fiber, carbon-fiber, aramid-fiber and any other reinforcement-fiber yarns.
This method is applicable to all types of yarns, including single yarns, double and cabled yarns, textured yarns, rovings and staple-fiber yarns.

2 NORMATIVE REFERENCES

The following referenced documents are indispensable for the application of this document. For dated references, only the editions cited apply. For undated references, the latest editions of the normative document (including any amendments) apply.
ISO 291 Plastics – Standard atmosphere for conditioning and testing
ISO 1887 Textile glass – Determination of combustible-matter content
ISO 3344 Reinforcement products – Determination of moisture content
ISO 10548: 2002 Carbon fiber – Determination of size content

3 TERMS AND DEFINITIONS

For the purposes of this document, the following terms and definitions apply.

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