Title:
LINER FOR CARDBOARD AND MANUFACTURING METHOD OF LINER FOR CARDBOARD
Document Type and Number:
WIPO Patent Application WO/2020/241417
Kind Code:
A1
Abstract:
This liner for cardboard is provided with at least a top surface layer, a subsurface layer and a back surface layer. The top surface layer contains softwood craft pulp, and the content of softwood craft pulp in the top surface layer is greater than or equal to 80 mass%; the subsurface layer contains softwood craft pulp and cardboard waste paper pulp and the content of softwood craft pulp in the subsurface layer is 25-35 mass%; the back surface layer contains cardboard waste paper pulp and magazine waste paper pulp, the content of the cardboard waste paper pulp in the back surface layer is 30-70 mass% and the content of the magazine waste paper pulp in the back surface layer is 30-70 mass%; and the ratio of the basis weight of the top surface layer to the overall basis weight is 20-35%, and the burst index in an atmosphere 80% RH and at 60°C is greater than or equal to 3.45 kPa*m2/g.
Inventors:
KIRIHARA YUTA (JP)
Application Number:
PCT/JP2020/019970
Publication Date:
December 03, 2020
Filing Date:
May 20, 2020
Export Citation:
Assignee:
DAIO SEISHI KK (JP)
International Classes:
D21H27/00
Foreign References:
| JP2016211105A | 2016-12-15 | |||
| JP2009091687A | 2009-04-30 | |||
| JP2009249762A | 2009-10-29 | |||
| JP2014070316A | 2014-04-21 | |||
| JP2010053486A | 2010-03-11 |
Attorney, Agent or Firm:
AMANO Kazunori (JP)
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