JPS56136350A - Manufacture for improved particle board - Google Patents
Manufacture for improved particle boardInfo
- Publication number
- JPS56136350A JPS56136350A JP3884180A JP3884180A JPS56136350A JP S56136350 A JPS56136350 A JP S56136350A JP 3884180 A JP3884180 A JP 3884180A JP 3884180 A JP3884180 A JP 3884180A JP S56136350 A JPS56136350 A JP S56136350A
- Authority
- JP
- Japan
- Prior art keywords
- water
- chip
- ammonium sulfate
- particle board
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
PURPOSE: To obtain the particle board which is free from reduction of bending strength under the ordinary state and does not produce brown stains even in the water by a method wherein more ammonium sulfate is added in water-soluble phenol resin adhesives.
CONSTITUTION: Ammonium sulfate, preferably in the form of water solution, is added in water-soluble phenol resin adhesives to which caustic soda is applied. The adhesives are added, for example, by 8% by weight of the chip for the chip in the internal layer and by 12% by weight of the chip for the external layer. The chip is formed in the form of a multistructure mat and then pressed in heating. Additionally, preferably, the mixture can be obtained more easily in the absence of aqueous ammonia for the low-concentrated (10% or less) aqueous solution of ammonium sulfate while by the addition of aqueous ammonia for the high-concentrated (10W 30%) aqueous solution of ammonium sulfate.
EFFECT: The obtain particle board is provided with large residual factors of bending strength when dipped in the cold water and small degrees of swelling in the thickness direction.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3884180A JPS5841191B2 (en) | 1980-03-28 | 1980-03-28 | Method for manufacturing improved particle board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3884180A JPS5841191B2 (en) | 1980-03-28 | 1980-03-28 | Method for manufacturing improved particle board |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56136350A true JPS56136350A (en) | 1981-10-24 |
JPS5841191B2 JPS5841191B2 (en) | 1983-09-10 |
Family
ID=12536420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3884180A Expired JPS5841191B2 (en) | 1980-03-28 | 1980-03-28 | Method for manufacturing improved particle board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5841191B2 (en) |
-
1980
- 1980-03-28 JP JP3884180A patent/JPS5841191B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5841191B2 (en) | 1983-09-10 |
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