JPH0687560U - Formwork for heat insulation of concrete walls - Google Patents

Abstract

(57) [Summary] [Purpose] Improving the adhesiveness and makeup of fiber-reinforced phenolic resin formwork to concrete, where the work of constructing the concrete formwork and the work of attaching the heat insulating material are completed at the same time and the work of removing the formwork can be omitted. The purpose is to simplify construction. [Structure] A peelable protective paper 3 is attached to the entire surface 2A on the front surface side of the glass fiber mixed phenolic phenolic plate 2, and an inorganic paper 4 having good adhesion to concrete is integrated on the entire surface 2B on the back surface side. Inorganic paper 4
This improves the adhesiveness to concrete and at the same time blocks the acid, and the protective paper 3 is peeled off from the surface side to remove stains on the pipe end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a formwork for heat insulation of a concrete wall.

[0002]

[Prior art]

 Generally, when building a concrete wall, a mold made of plywood, etc. is assembled, concrete is poured into this mold to wait for it to harden, and the mold is removed to perform various cosmetic constructions or heat insulation walls on the surface. The procedure was to attach the heat insulating material. However, in the case of the above-mentioned formwork method, the formwork is used only as a form for constructing a wall surface, and there is a drawback that the subsequent work of removing the formwork is very troublesome. In particular, when attaching a heat insulating material, etc., after removing the formwork, a plate-like heat insulating material with the same shape as the formwork is again attached to the concrete wall surface, or an adhesive is applied, so that it is troublesome to construct. There was a problem that it took a long time in the construction period. In consideration of these problems, the concrete formwork is made of fiber reinforced foam phenolic resin plate with excellent heat insulation properties, and after the formwork is assembled and concrete is placed, the formwork is used as an interior material that also serves as a heat insulating material. Formwork is used.

[0003]

[Problems of conventional technology]

 When the above formwork is used, the work of removing the formwork after placing the concrete can be omitted altogether, which is very convenient for shortening the construction period and saving labor. There is a problem that it is likely to be contaminated with water or scratched by metal fittings such as thick wood, and it is necessary to apply makeup again.Because the phenolic resin is acidic, it neutralizes the contact interface with concrete and becomes a heat insulating material. There was a problem that the adhesive strength of was reduced.

[0004]

[Problems to be solved by the device]

 In view of the above problems, the present invention improves the adhesiveness and makeup of a fiber-reinforced phenolic resin formwork to concrete, in which the work of concrete formwork and the work of attaching the heat insulating material are completed at the same time and the work of removing the formwork can be omitted. The purpose was to simplify construction.

[0005]

[Means for Solving the Problems]

 That is, the concrete wall 1 for heat insulation of the concrete wall of the present invention has the peelable protective paper 3 adhered to the entire surface 2A which is the front side of the glass fiber mixed foam phenol plate 2, and the entire surface 2B which is the back side. In addition, the inorganic paper 4 having good adhesion to concrete is integrally laminated and adhered.

[0006]

【Example】

 Next, an embodiment of this invention will be described. FIG. 1 is a sectional view of an embodiment of the present invention.

The concrete wall 1 for heat insulation of a concrete wall of the present invention has a peelable protective paper 3 on the front surface 2A of the foamed phenolic plate 2 having a density of 30 kg / m ³ , for example, the entire inner wall surface. Is adhered via an adhesive layer, for example, and the organic paper 4 made of, for example, calcium carbonate, aluminum hydroxide or the like, which has good adhesiveness to concrete, is integrally laminated and adhered on the entire surface of the back surface 2B. Is configured. In the above embodiment, the protective paper 3 is attached after forming the fiber reinforced foamed phenolic plate 2, while the inorganic paper 4 is laminated simultaneously at the stage of molding the glass fiber reinforced expanded phenolic resin plate 2.

[0008]

[Action]

 When using the mold 1 for heat insulation of concrete wall of this invention, the mold is assembled so that the inorganic paper 4 side becomes the concrete placing surface, and the concrete is poured. Then, when the concrete hardens, the formwork 1 is integrally bonded to the concrete wall with the inorganic paper 4 surface as the bonding surface. At this time, since the inorganic paper 4 blocks between the foamed phenolic resin plate 2 and the concrete, the acid does not affect the concrete, and the inorganic paper 4 and the concrete have a good affinity so that they are firmly bonded. To do.

[0009] In addition, even if there is a spillage during the concrete pouring on the front surface side of the heat-insulating formwork 1 of the concrete wall, which is the indoor side, these only stain the surface of the protective paper 3, so these If you wait for it to dry and then peel it off at once, a beautiful surface of the concrete heat insulation / formwork 1 of the concrete wall will appear, and the subsequent repair work can be omitted completely. Further, since the foamed phenolic resin plate has a good heat insulating property, it enhances the heat insulating effect of the wall surface. Therefore, the one used as the formwork becomes the heat insulating material of the concrete wall as it is, and the subsequent work for removing the formwork and repair work is completely unnecessary, and the foamed phenol plate 2 and the inorganic fiber reinforced phenol plate 3 are nonflammable. It also functions as a fire wall.

[0010]

[Effect of device]

 As explained above, the concrete wall heat insulation / formwork 1 of the present invention has both a function as a formwork, a heat insulation material and a function for providing surface accuracy, and at the same time, it can be used as a concrete after pouring. It maintains a strong adhesive strength for a long period of time without degrading the adhesive interface with acid, and it can also omit the surface makeup work after the construction, so that a wall surface that is strong and excellent in heat insulation and has a beautiful appearance can be obtained. It has the effect that it can be installed.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

[Explanation of symbols]

 1 ... Formwork for heat insulation of concrete wall 2 ... Fiber reinforced foam phenolic plate 2A ... Front side 2B ... Back side 3 ... Protective paper 4 ... Inorganic paper

Claims (1)

[Scope of utility model registration request] 1. A peelable protective paper 3 is adhered to the entire surface 2A on the front side of a glass fiber mixed phenolic phenolic plate 2, and an inorganic paper 4 with good adhesion to concrete is applied on the entire surface 2B on the back side. A form for heat insulation and use of concrete walls, characterized by being integrally laminated and bonded.