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Plasterboard manufacturing method and plasterboard

A manufacturing method and technology of gypsum board, applied in the direction of manufacturing tools, chemical instruments and methods, building construction, etc., can solve problems such as poor smoothness and poor bonding

Pending Publication Date: 2020-06-12
YOSHINO GYPSUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, there is a base paper overlapping portion including a step portion near the end portion in the width direction of the gypsum board 10, and the smoothness near the end portion in the width direction of the gypsum board is poor.
[0009] Therefore, if the studs are to be bonded to both ends of the gypsum board 10 in the width direction (X-axis direction) along the length direction (Y-axis direction) of the gypsum board 10 on the back surface 10B of the gypsum board 10, there will be The possibility of poor adhesion and poor bonding

Method used

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  • Plasterboard manufacturing method and plasterboard
  • Plasterboard manufacturing method and plasterboard
  • Plasterboard manufacturing method and plasterboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0208] In embodiment 1, made Figure 3A and Figure 3B The shaped body shown, on the basis of which a gypsum board was manufactured. Additionally, on the backside of this plasterboard as Figure 6 Blocks are shown set up and evaluated.

[0209] First, the manufacturing process of a gypsum board is demonstrated.

[0210] From figure 2 The surface covering base paper is conveyed continuously along the production line from the right side to the left side.

[0211] In addition, in one mixer 22, the composition ratio is 1 part by mass of the coagulation regulator, 0.3 part by mass of the water reducer, 0.5 part by mass of the adhesion enhancer, and 80 parts by mass of water relative to 100 parts by mass of calcined gypsum. These were kneaded in parts by mass to prepare gypsum slurry (gypsum slurry) (kneading step).

[0212] Next, the gypsum slurry obtained by the agitator 22 is supplied from the extraction ports 221 and 222 via the delivery pipes 223 and 224 to the surface c...

Embodiment 2

[0228] In the forming step, instead of using the back cover base paper 26, only the surface cover base paper 21 was used to manufacture Figure 5A and Figure 5B A molded body (gypsum board) and a pier-backed gypsum board were produced and evaluated in the same manner as in Example 1 except for this point.

[0229] It should be noted that, with regard to the molded body 40, the upper surface of the gypsum core 41 covers the end portions in the width direction of the base paper, that is, the side 421A, the side 421B, that is, the step portion, and the ends 40C, 40C, The distance between 40D is 235mm.

[0230] The evaluation results are shown in Table 1.

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Abstract

Provided is a plasterboard manufacturing method which comprises a forming step for forming a plate-shaped formed body including plaster slurry and cover base paper disposed to cover at least a portionof a surface of the plaster slurry, wherein, in a cross-section of the formed body, the cross-section being perpendicular to the longitudinal direction, the cover base paper completely covers the outer periphery of the plaster slurry and partially overlaps itself, and the distance between an end section of the formed body in the width direction and a step part produced by the overlap of the coverbase paper itself is 15 mm or more.

Description

technical field [0001] The present invention relates to a method of manufacturing gypsum boards and to gypsum boards. Background technique [0002] Conventionally, gypsum boards have also been used as interior building materials such as ceilings. When using a gypsum board as an interior building material such as a ceiling, for example, a pier (pier) for fixing the gypsum board may be provided on the back side of the gypsum board to form a pier-backed gypsum board. In addition, when the gypsum board is used as a pier-backed gypsum board, in order to improve design, a decorative sheet printed with a pattern or the like may be attached to the surface and side surfaces of the gypsum board. [0003] For example, Patent Document 1 discloses a ceiling material in which a decorative sheet is attached to the surface of a base material made of gypsum board and a set of construction pier wood is arranged at the edges on both sides of the back side, which is characterized in that it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B13/08B32B37/14E04B9/04
CPCB32B13/08B32B37/14E04B9/04B28B19/0092E04C2/043C04B28/14B32B38/0004B32B38/164B32B2038/166B32B2250/40B32B2419/00B32B2451/00
Inventor 津野则男网藏俊二石桥政刚
Owner YOSHINO GYPSUM CO LTD