MANUFACTURING METHOD OF GLASS FILAMENT

• Main Authors: FUKAZAWA HIROYUKI, SHIOBARA TOSHIO, TAGUCHI YUSUKE, KIM KYOUNG HOU, TAKAHASHI YUTA, IKAGA TOSHIFUMI, OGOSHI YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 22.11.2022
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING; TEXTILES

To provide a manufacturing method of an ultrafine glass filament containing less hydroxy group content and low dielectric loss.SOLUTION: A manufacturing method of a glass filament with a hydroxy group (Si-OH) content of 300 ppm or under and diameter of 1-20 μm includes irradiating a raw yarn having a raw yarn diameter of 100-2000 μm and involving 70 mass% or over of SiO2 with a laser beam having a wavelength of 0.7-100 μm, followed by heating and drawing the raw yarn to obtain the glass filament.SELECTED DRAWING: None 【課題】 水酸基含有量が少なく、誘電損失の少ない極細のガラスフィラメントの製造方法を提供すること。【解決手段】ＳｉＯ2を７０質量％以上含み、原糸直径１００～２０００μｍの原糸に、０．７～１００μｍの波長を持つレーザー光を照射し、前記原糸を加熱して延伸することにより、水酸基（Ｓｉ－ＯＨ）含有量３００ｐｐｍ以下、かつ、直径１～２０μｍのガラスフィラメントを得るガラスフィラメントの製造方法。【選択図】 なし