Waterproof paperboard and method for producing same
US3962509A · kind A · utility
6Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 24, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Dec 24, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31808
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Waterproof corrugated paperboard and other paper constructions and a process for producing such waterproof paperboard by impregnating paperboard with a mixture containing from about 10 to about 50 weight percent tung oil and from about 90 to about 50 weight percent paraffin wax and curing the impregnated paper at a temperature from about 80.degree.C to about 163.degree.C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.