Title:
ガラス板合紙用木材パルプ及びその使用、ガラス板用合紙、それを用いた積層体、ガラス板の保護方法、並びにガラス板合紙用木材パルプ又はガラス板用合紙の検査方法
Document Type and Number:
Japanese Patent JP6937413
Kind Code:
B2
Abstract:
To provide a slip sheet and wood pulp for the slip sheet capable of reducing contamination on the surface of glass for a glass plate used as a substrate material for a flat panel and a display requiring high cleanness and flaw quality to a level without practical problems.SOLUTION: In wood pulp for a glass plate slip sheet, the concentration of elements measured by fluorescent X-ray analysis in hand-made paper prepared by a method in compliance with JIS P 8222 satisfies at least one of conditions such that (1) aluminum is 120 ppm or less, (2) silicon is 1,000 ppm or less, (3) sulphur is 300 ppm or less, (4) calcium is 800 ppm or less, (5) magnesium is 800 ppm or less (6) iron is 100 ppm or less, (7) chlorine is 700 ppm or less, (8) sodium is 3,500 ppm or less, (9) potassium is 50.0 ppm or less, (10) phosphorus is 20.0 ppm or less and (11) nickel is 400 ppm or less.SELECTED DRAWING: None
Inventors:
Yasuhiko Asai
Naoki Fujikawa
Naoki Fujikawa
Application Number:
JP2020117230A
Publication Date:
September 22, 2021
Filing Date:
July 07, 2020
Export Citation:
Assignee:
Tokushu Tokai Paper Co., Ltd.
International Classes:
D21H27/00; B65D85/48; D21C9/02; G01N23/223
Domestic Patent References:
| JP6760764B2 | ||||
| JP2014118663A | ||||
| JP2009542534A |
Foreign References:
| WO2014098162A1 | ||||
| WO2015194511A1 | ||||
| WO2015137488A1 |
Attorney, Agent or Firm:
Shinya Mitsuhiro