CN1076407A

CN1076407A - A kind of preparation method of plasterboard

Info

Publication number: CN1076407A
Application number: CN 93102776
Authority: CN
Inventors: 许觉喜
Original assignee: YAYI NATURAL MATERIAL DEVELOPMENT Co Ltd BEIJING CITY
Current assignee: YAYI NATURAL MATERIAL DEVELOPMENT Co Ltd BEIJING CITY
Priority date: 1993-03-27
Filing date: 1993-03-27
Publication date: 1993-09-22

Abstract

The present invention relates to a kind of preparation method of plasterboard, it comprises that making loose tool (1) is coated with one deck releasing agent (3), pour into a mould the gypsum solution (4) of the about 1/4 plasterboard thickness of one deck again, then at the last glass fibre (5) of laying the about 3/4 gypsum thickness of slab of one deck, pouring gypsum solution (6) again on glass fibre makes gypsum solution (6) fully permeate and combine with ground floor (4).When making gypsum solution (4,6), do not carry out any stirring, do not add set retarder.This method has not only been simplified operation sequence, has reduced production cost, but also has improved the quality of production of plasterboard.

Description

A kind of preparation method of plasterboard

The present invention relates to a kind of preparation method of plasterboard, particularly a kind of preparation method that is used for the plasterboard of ceiling, this method are suitable for the batch production large-scale production of plasterboard.

In the production method of existing plasterboard, the general loose tool of at first making required form and pattern, on loose tool, be coated with the last layer releasing agent again, in loose tool, pour into a mould the thin land plaster that does not have glass fibre of one deck and the mixed solution of water then, and then cast is impregnated with the land plaster of glass fibre and the mixed solution of water in the above, until the thickness that waters required plasterboard, wait solidify the back demoulding get final product.In this production method, the mixed solution of gypsum and water and gypsum add the mixed solution of glass fibre and water, and be clear in being poured into loose tool, all is under certain ratio, is less than by mixing and stirring.Because land plaster when contact with water, can react immediately and solidify, mix and stir one side and can make solution even, still but can quicken this solidifying on the other hand.Therefore,, be beneficial to workman's operation, often will in this gypsum solution, add a certain amount of material as set retarder in order to delay the process of setting of gypsum solution.But behind the adding set retarder, not only increased production cost, and can make the plasterboard leakiness of production, in leave many pores, reduce the quality of plasterboard.

Purpose of the present invention will overcome above-mentioned the deficiencies in the prior art exactly, invents a kind of new methods for gypsum board production, and this method is not only simple to operate, and production cost is low, and the quality of the plasterboard of being produced is good.

The object of the present invention is achieved like this, makes the loose tool of required form and pattern earlier, and this loose tool can adopt material manufacturings such as metal, glass or fiberglass, also can adopt gypsum material to be shaped and form.If when adopting plaster match, should on plaster match, be coated with the last layer waterproofing agent in advance.Loose tool is arranged on the production operation platform, is coated with one deck releasing agent then.It is characterized in that, when making the mixed solution of land plaster and water, earlier with holding a certain amount of water in the big container, again land plaster is poured in the water of this container equably, surperficial concordant up to this water do not carry out any stirring, the gypsum solution in this container poured into a mould in the loose tool again.The thickness of this cast for the first time is about 1/4 of plasterboard thickness, for the first time pouring gypsum solution intact after, lay glass fibre in the above immediately, the thickness of lay approximates 3/4 of gypsum thickness of slab, the length of glass fibre is about about 150～450mm, is preferably 300mm, random lay.And then the gypsum solution of the method making identical of cast in the above with method noted earlier, and in cast on one side, suitably push in the above with hand on one side, so that the air in the fiber is all thrown out, gypsum solution is fully permeated into, until contacting and combine with the gypsum of being poured into a mould for the first time.Therefore, when gypsum solution was solidified, the glass fibre of being put into just was dispersed in plasterboard, then the plasterboard demoulding was got final product.

Below by embodiment shown in the drawings, again the present invention is explained in detail

Fig. 1 is the profile of a plasterboard in loose tool, and the step of the method for production plasterboard of the present invention is adopted in expression.

As shown in Figure 1, make the loose tool 1 of required form and pattern earlier, loose tool 1 flatly is placed on the workbench.If loose tool 1 is the time of adopting that gypsum makes, then on loose tool 1, be coated with last layer waterproofing agent 2 in advance, be coated with last layer releasing agent 3 more thereon.If when fluid-tight similar materials such as loose tool 1 employing fiberglass are made, then directly be coated with last layer releasing agent 3 in the above and get final product.Coat after the releasing agent 3, in loose tool 1, water last layer and approximate 1/4 thick gypsum solution 4 of plasterboard thickness, lay the 3/4 thick glass layer 5 that approximates plasterboard thickness then in the above at once, on this glass layer 5, pour into a mould gypsum solution 6 more immediately, cast on one side, with hand push on one side.Because glass layer 5 is bulk, when pushing with hand, the air in it can be driven out of, and makes gypsum solution 6 can fully be penetrated into the inside, and combines with the gypsum solution layer 4 of cast for the first time.Make above-mentioned gypsum solution 4 and 6 and all adopt the same method, be about to a container and contain earlier and go up water, then land plaster is poured in the water equably, till land plaster and water surperficial concordant, do not carry out any stirring.

From as can be seen last, when adopting the method for the invention to make plasterboard, do not need to add any set retarder in the gypsum solution, do not carry out any stirring yet, simplified operation sequence, reduced production cost, and, also improved the quality of the plasterboard of being produced.

Claims

1, a kind of methods for gypsum board production, it may further comprise the steps:

1) loose tool (1) of making required form and pattern flatly is placed on loose tool (1) on the operating desk;

2) in loose tool (1), be coated with one deck releasing agent (3);

3) land plaster of the about 1/4 plasterboard thickness of cast ground floor and the mixed solution (4) of water in loose tool (1); It is characterized in that further comprising the steps of and condition:

4) fiber (5) of the glass of the about 3/4 plasterboard thickness of lay one deck at once again in loose tool;

5) mixed solution (6) of cast second layer land plaster and water on the glass fibre of loose tool (1) immediately, and cast on one side, with hand on glass fibre push on one side, so that gypsum solution fully penetrates in the glass fibre, and combine with the ground floor gypsic horizon, wait and solidify the back demoulding and get final product;

Said ground floor and second layer gypsum solution are made in a container, in container, inject a certain amount of water earlier, again land plaster is evenly poured into toward interior, do not do any stirring, till the surperficial flat agent of the water in land plaster and container, be poured into immediately then in the loose tool (1).

2, the method for claim 1 is characterized in that, when loose tool (1) adopted gypsum to make, loose tool (1) will be coated with last layer waterproofing agent (2) in advance.

3, method as claimed in claim 1 or 2 is characterized in that, the length of used glass fibre (5) is 150～450mm.

4, method as claimed in claim 3 is characterized in that, the length of used glass fibre (5) is 300mm.