Title:
REGENERATED CELLULOSE MASK PACK SHEET WITH EXCELLENT TRANSPARENCY AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/225219
Kind Code:
A1
Abstract:
The present invention relates to a regenerated cellulose mask pack sheet with excellent transparency and a manufacturing method therefor, in which the regenerated cellulose mask pack sheet is prepared by soaking regenerated cellulose non-woven fabric in an alkaline solution, padding, and reacting same with a carboxymethylating agent, wherein the transparency of the regenerated cellulose non-woven fabric reacted with the carboxymethylating agent, as measured by a transparency measurement test using difference in brightness, satisfies expression 1. (wherein d1 is brightness at bottom (black spot) and d2 is brightness at background (white background).) expression 1: 100 ≤ d2 - d1
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Inventors:
LEE KWON SUN (KR)
CHOI BOO KI (KR)
LEE SEUNG KWAN (KR)
KIM KYUNG HAK (KR)
CHOI BOO KI (KR)
LEE SEUNG KWAN (KR)
KIM KYUNG HAK (KR)
Application Number:
PCT/KR2020/008771
Publication Date:
November 11, 2021
Filing Date:
July 06, 2020
Export Citation:
Assignee:
CELL BIO HUMAN TECH CO LTD (KR)
International Classes:
A45D44/00; A61K8/02; D04H1/4258; D06B15/02; D06M11/38; D06M13/188
Foreign References:
| KR101607939B1 | 2016-04-01 | |||
| KR101975079B1 | 2019-05-03 | |||
| JPH08291461A | 1996-11-05 | |||
| JP2006002310A | 2006-01-05 | |||
| JP2906147B2 | 1999-06-14 |
Attorney, Agent or Firm:
PATENT LAW FIRM GRANDKOREA (KR)
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