Core material for vacuum insulation panel and method of manufacturing the same
The present invention relates to a core material for a vacuum insulation panel and a method of manufacturing the same. The method includes (a) preparing a solution of an inorganic binder; (b) dipping glass wool into the inorganic binder solution; (c) loading the glass wool on an upper portion of a chamber; (d) creating a vacuum in the chamber to discharge the inorganic binder solution from the glass wool into the chamber; and (e) drying and molding the glass wool into the form of a core material for manufacturing a vacuum insulation panel, thereby enhancing long term-durability of the vacuum insulation panel.
1. A method of manufacturing a core material for a vacuum insulation panel, comprising:
(a) preparing a solution of an inorganic binder using 0.5 to 4 wt % of the inorganic binder to a balance of water;
(b) dipping glass wool into the inorganic binder solution;
(c) loading the glass wool on an upper portion of a chamber;
(d) creating a vacuum in the chamber to discharge the inorganic binder solution from the glass wool into the chamber; and
(e) drying and molding the glass wool into the form of a core material for manufacturing a vacuum insulation panel.
2. The method of claim 1 , wherein the inorganic binder comprises at least one selected from cement, calcium sulfate, plaster, mud, clay, sodium silicate, alumina silicate, calcium silicate, and silica.
3. The method of claim 1 , wherein the step (d) and the step (e) are conducted at the same time.
4. The method of claim 1 , wherein the drying is conducted at 300 to 450° C. for 5 to 15 minutes.
5. The method of claim 1 , wherein, in the step (d), the glass wool is reduced in thickness by the vacuum.
6. The method of claim 5 , wherein the glass wool has a reduction ratio of 70 to 80%.