Title:
BIODEGRADABLE ABSORBENT PAD USING HYDROPHILIC PLA NONWOVEN FABRIC, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/244936
Kind Code:
A1
Abstract:
The present invention relates to a biodegradable absorbent pad and, more specifically, to an inkless-printing-type biodegradable absorbent pad using a hydrophilic PLA nonwoven fabric, and a manufacturing method therefor, the pad being printable without ink while improving absorption power, which is a disadvantage of a hydrophobic PLA nonwoven fabric. The inkless-printing-type biodegradable absorbent pad using a hydrophilic PLA nonwoven fabric, according to the present invention, comprises: an upper layer made of a biodegradable film; a middle layer made of an absorbent; and a lower layer made of a PLA nonwoven fabric coated with a water-soluble polymer, wherein the PLA nonwoven fabric becomes hydrophilic by being dipped into a mixture in which 0.03-0.1 wt% of at least one or two types of water-soluble polymer from among carboxymethyl cellulose (CMC), hydroxymethyl cellulose (HEC), hydroxypropyl cellulose (HPC), methyl cellulose (MC), polyvinyl alcohol (PVOH), xanthan, ethyl cellulose (EC), hydroxymethyl methacrylate (HEMA), starch, agar and sodium alginate are dissolved in 99.9-99.97 wt% of purified water, and then being dried with hot air at 60-100°C.
Inventors:
LEE GWANG YONG (KR)
Application Number:
PCT/KR2021/018273
Publication Date:
November 24, 2022
Filing Date:
December 03, 2021
Export Citation:
Assignee:
ECOLGREENTEC CO LTD (KR)
International Classes:
B65D81/26; A23L3/3508; A23L3/358; B65D65/40; B65D75/30
Domestic Patent References:
| WO2015059709A1 | 2015-04-30 |
Foreign References:
| KR20190136735A | 2019-12-10 | |||
| KR101981965B1 | 2019-05-24 | |||
| KR100833583B1 | 2008-05-30 | |||
| US20170021051A1 | 2017-01-26 |
Attorney, Agent or Firm:
BAEK, Seung Nam (KR)
Download PDF: