JPH0366863A - Fitting method for honeycomb sandwich panel - Google Patents

Abstract

PURPOSE:To prevent unevenness of alignment of joints and facilitate execution of the work by fastening a panel by screw to the structure mass for location when the panel is adhered to the mass, wherein the panel is formed by laminat ing skin layers on both sides of a honeycomb layer. CONSTITUTION:Skin layers 2 consisting of sheet material of for ex. metal, paper, plywood, and plastics are laminated on both sides of a honeycomb core layer consisting of metal foil, paper, plastic, etc., and a honeycomb sandwich panel 4 is formed which is provided over the surface with a sheet 3 of for ex. paint, stone material, ceramic etc. Then this panel 4 is fixed to the mass ground 5 by adhesives 6 with a spacer 7 interposed, and a wood screw 8 is penetrated in a rear side skin layer 2 from the edge of the periphery of a core 1 followed by screw driving and securement so as to provide location in the parallel direction and height direction. This provides accurate alignment of the inter-panel joints with the surface, wherein no metal pieces will be exposed to ensure fine appearance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a method of attaching honeycomb sandwich panels to a structural framework.

[Problem to be solved by the invention]

Generally, when panels are installed side by side on a structure, if the joints between the panels are uneven, the appearance will deteriorate significantly. In addition, as the panel size increases, warping is more likely to occur, which also causes a deterioration of the appearance, so when installing the panel, it is necessary to accurately align the joints and at the same time correct warpage and adjust unevenness. Ta.

Honeycomb sandwich panels, which are made by laminating skin layers on both sides of a core part of a honeycomb structure, are lightweight and have high strength, so they are widely used as panel materials for walls, ceilings, floors, etc., and also as materials for vehicles. Recently, a sandwich panel in which a thin sheet of natural stone is attached to the surface of the sandwich panel has been developed, and it is attracting attention as a new material that can significantly reduce the weight, which is a drawback of stone, while retaining the excellent texture of natural stone. ing.

As a method for attaching such a sandwich panel to a structural frame, it is preferable to attach it using an adhesive, taking advantage of the fact that sandwich panels are generally lightweight. However, it was difficult to match the curing time of the adhesive with the positioning of the panel (horizontal and vertical position and joint alignment), which was a problem. For example, when using adhesives that harden quickly, it is difficult to adjust the unevenness (adjusting the irregularities of the structure so that the panel surface is uniform and flat before attaching) or positioning for joint alignment. In addition, when using adhesives that have a slow curing time, even if the positioning is accurate, jigs and auxiliary tools are required to hold the position until curing, which reduces cost and work efficiency. It was not favorable in that respect.

This invention was made in view of the above circumstances. The purpose of this method is to accurately position the honeycomb sandwich panel to the narrow structure, prevent unevenness and uneven joints, and install it using adhesive in a highly efficient manner. It is to propose.

[Means to solve the problem]

This method of attaching a honeycomb sandwich panel is such that when a honeycomb sandwich panel, which is made by laminating skin layers on both sides of a honeycomb core layer, is fixed to a thin structure with an adhesive, the honeycomb sandwich panel is attached from the end face of the panel to the periphery of the honeycomb core layer. The panel is positioned by screwing the inserted screws through the back skin layer and fixing them into the thin base.

The honeycomb sandwich panel targeted by this installation method has skin layers laminated on both sides of a honeycomb core, and the core may be made of metal foil, such as aluminum foil, stainless steel TJA foil, paper, plastic, or inorganic sheet. A honeycomb structure can be used, while the skin can be made of metal, paper, plywood, plastic or an inorganic sheet material. Moreover, a combination of these can also be used. As the metal skin, for example, a thin plate made of aluminum, stainless steel, iron, titanium steel, or alloy steel thereof, or a processed product thereof can be used. Furthermore, it is also possible to use a panel with a painted skin surface, a decorative film, a sheet, or a panel with stone, ceramic, etc. affixed to the skin surface to enhance the design effect. Although the cell size of the honeycomb constituting the core layer is not particularly limited, it is preferably a size that allows the head of a screw to be used to fit within one cell.

Any thin base material for mounting the panel may be used as long as it can be fixed with screws. The adhesive for bonding the panel and the plate body is not particularly limited, but a mastic adhesive that can adjust the unevenness is preferable.

〔Example〕

Example 1 In Figure 1.2.3, a honeycomb cogamma layer l using aluminum foil with a cell size of 6.35 mm and a thickness of 18 mm is shown.
A honeycomb sandwich panel 4 (640mm x lloOmm) with skin layers 2, 2 of stainless steel plates with a thickness of 0.15+nm laminated on both sides of the panel and a natural marble thin plate 3 (thickness 4.5 [Iun) affixed on one surface of the skin layer 2, 2]. , height 2.
It was fixed and attached with adhesive to the slender base 5 on the four sides of a column with a square cross section of 6 m.

First, as shown in Fig. 1, apply approximately 50 gr of epoxy mastic adhesive 6 (Konishi EK360) to the base 5 at the positions where the panels 4 are to be fixed, at intervals of approximately 30 cm.
A total of 12 locations were arranged, two spacers 7 (plates with a thickness of 4 mm) were fixed in the center, and the panels 4 were adhesively fixed in order from the bottom.

When fixing with this adhesive, insert wood screws 8 with a length of 25 mm from the end surface into the periphery of the honeycomb core layer 1 at the four corners of the panel 4.
was inserted and screwed into the frame base 5 through the skin layer 2 on the back side and fixed.

At this time, simultaneously with positioning in the direction parallel to the panel surface, the height of the panel was determined by the screwing degree of the wood screws 8.

The Konishi EK360 adhesive takes 10 to 20 hours to fully cure and secure the adhesive, but during this time the panel 4 maintains its predetermined position accurately and can be adhesively secured, and the joints between the panels are accurately aligned. I was able to install it. Additionally, before installation, this panel had a 1.5 mm concave surface warp in the long plane direction, but this warp was corrected and the alignment between adjacent surfaces of the panel was made accurate. A flat panel surface could be formed.

Comparative Example 1 In Example 1, instead of positioning and temporary fixation using screws, temporary fixation was attempted using instantly hardening cement. Solidification time is 1
Prescriptions lasting less than 0 minutes are too hard and difficult to handle.
A formulation with a solidification time of 20 minutes was used. The position could not be fixed unless it was held down with one hand for 30 minutes, and cracks occurred after solidification.

Example 2 In the same manner as in Example 1, a honeycomb sandwich panel 4 was attached to a dish base 5 having an unevenness of 5 to 10 mm. In this case, an adjustment width of 5 to 15 mm is required to adjust the unevenness, and this adjustment is performed by sandwiching the required number of 2 mm thick plates alternately between the adhesives 6 and 6 shown in Figure 1. (not shown). In addition, when fixing and positioning the panel 4 with wood screws 8 inserted into the peripheral edge of the honeycomb core layer 1, as shown in FIG. Sandwich the elastic body,
The height of the panel 4 was finely adjusted depending on the screwing degree of the wood screws 8 and the elasticity of the elastic body.

Comparative Example 2 In Example 2, temporary fixing was attempted using a quick-curing adhesive (Alabite C-6ON: Ciba Geigy Co., Ltd.) instead of the wood screws, but the viscosity was low, causing sagging, and the curing time was too long. It was not possible to make fine adjustments to the positioning because the timing was too fast.

〔Effect of the invention〕

The present invention is as described above, and the method for attaching the honeycomb sandwich panel uses an adhesive, the joints and surfaces between the panels are accurately aligned, and the panel can be attached with high working efficiency. Furthermore, the mounting hardware will not be exposed on the surface and will not spoil the aesthetics.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a plan view of a temporary base on which adhesive is placed to attach a panel, Fig. 2 is a cross-sectional view of the panel attached to the original base, and Fig. 3 4 is a plan view showing a partial cross section of a corner of the panel, and FIG. 4 is a sectional view of the panel in which an elastic body is sandwiched and attached between the dish bases. 1...Honeycomb core layer, 2...Skin layer, 3...Natural marble thin plate, 4...Honeycomb sandwich panel, 5...... Original base material, 6...Epoxy mastic adhesive,
7... Spacer 8... Wood screw, 9... Elastic body.

Claims (1)

[Claims] (1) When fixing a honeycomb sandwich panel made by laminating skin layers on both sides of a honeycomb core layer to a structure frame with an adhesive, screws inserted from the end face of the panel into the peripheral edge of the honeycomb core layer are attached to the back skin. A method for installing a honeycomb sandwich panel, characterized in that the panel is positioned by screwing through the layers and fixing it to the base of the building frame.