JPS5847074A - Bonding process - Google Patents

Abstract

PURPOSE:To insure perfect bonding by eliminating air which tends to remain on the adhesive surface by the use of a nonwoven fabric sheet which contains on adhesive and has a directional property to form numerous flow paths and is interposed between a parent material and an adherend. CONSTITUTION:In the bonding of an antifouling thin sheet made of copper or copper alloy to an outer steel plate of ship hull, an adhesive 3 is applied to both an outer steel plate 1 and an antifouling thin sheet 2 and a fabric sheet 5 is laid on the layer of coated adhesive 3. The sheet 5 is a nonwoven fabric consisting of a majority of fibers arranged in a length wise direction 5a and a minority of fibers arranged in a crosswise direction 5b and having a directional property to form numerous parallel flow paths along the longitudinal fiber 5a. Then, the antifouling thin sheet 2 is joined to the ship hull outer plate 1 and they are pressed against each other by proper means. The air 4 remaining in between 1 and 2 are forced out most efficiently along the flow paths formed on the fabric sheet 5 and upon curing of the adhesive 3, a strong bonding is accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for bonding an antifouling thin plate and a member to be bonded to a base material such as a hull outer panel using an adhesive.

In general, when adhering antifouling thin plates over a wide area (C) on the surface of a hull, if air remains between the hull hull and the antifouling thin plates, sufficient adhesive action will not be achieved. , the antifouling thin plate may peel off.

That is, as shown in FIGS. 1 and 2 (cross-sectional view taken along the line 11-■ in FIG. If air 4 remains in between, there is a problem in that poor adhesion occurs.

The present invention is intended to solve these problems, and is an adhesive that efficiently pushes out the air that tends to remain between the base material and the bonded material, thereby ensuring reliable bonding. The purpose is to provide construction methods.

Therefore, in the bonding method of the present invention, when bonding a member to be bonded to the base H via an adhesive, a sheet containing the above-mentioned adhesive is interposed between the base material and the member to be bonded as described in -11. let me,
By pressing the adhered member against the base material using a directional nonwoven fabric that forms a large number of parallel flow paths as the sheet, the air between the two is forced along the flow paths in the notebook. It is characterized by being pushed out.

Hereinafter, embodiments of the present invention will be explained with reference to the drawings.
Figure 3 is a perspective view of the sheet used in the adhesive method of the present invention, Figure 4 is a side view of the hull showing the state in which the antifouling thin plate is adhered to the outer skin of the hull, and Figure 5 is the V- It is a sectional view taken along the V line.

In the bonding method of the present invention, when bonding a member to a base material, a sheet 5 as shown in FIG. 3 is interposed between the two. This sheet 5 is a nonwoven fabric made of a large number of longitudinal fibers 5a and a small number of horizontal fibers 5b, and has a directionality in which a large number of mutually parallel flow paths are formed along the longitudinal fibers 5aVL. .

As shown in FIGS. 4 and 5, before bonding the antifouling thin plate 2 made of copper or copper alloy as the member to be adhered to the steel hull outer plate 1 as the base material, first the outside of the hull is bonded. An adhesive 3 is applied to one or both of the plate 1 and the antifouling thin plate 2.

Next, a sheet 5 is placed on the coated layer of the adhesive 3, and the sheet 5 is rubbed to the extent that the adhesive 3 is slightly smeared onto the sheet.

Note that if the sheet 5 is more flexible than the adhesive 3, it is not necessary to squeeze the sheet 5 from above.

After the above-mentioned preparation work, when the antifouling thin plate 2 is brought into close contact with the hull outer plate 1, a sheet 5 containing an adhesive 3 is interposed between the two, as shown in FIG. Next, by pressing and holding the antifouling thin plate 2 against the hull outer plate 1 by appropriate means, the air between the two is pushed out extremely efficiently along the flow path formed in the sheet 5.

When the adhesive 3 hardens in this state, the antifouling thin plate 2 becomes firmly adhered to the hull outer plate 1 since there is no residual air.

FIG. 6 is a perspective view showing a modified example of the sheet used in the adhesive method of the present invention, and this sheet 5' is a corrugated nonwoven fabric having peaks and valleys running in one direction.

In other words, this sheet 5' is also a non-woven fabric with a directionality that forms a number of parallel ridges and valleys, so by using this sheet in place of the sheet 5 described above, the same effect as in the aforementioned embodiment can be achieved. The same effects can be obtained as in the case of

Note that the formation of peaks and valleys in the sheet 5' can be easily achieved by post-processing the nonwoven fabric with a roller.

As detailed above, according to the bonding method of the present invention, when bonding a member to be bonded to a base material via an adhesive, the adhesive is applied between the base material and the member to be bonded. By pressing the member to be adhered to the base material using a directional nonwoven fabric that forms a large number of parallel flow paths as the sheet, the bond between the two is interposed. The simple method of pushing air out along the flow path in the sheet has the advantage of being extremely efficient and reliable in adhesion, and is especially useful for attaching antifouling thin sheets to the surfaces of ship hulls and offshore structures. It is a force that can be used for adhesion to realize a suitable construction method.

[Brief explanation of drawings]

Figures 1 and 2 show the bonded state with residual air, Figure 1 is a front view thereof, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is a bonded state of the present invention. Figure 4 is a cross-sectional view of the sheet used in the adhesive construction method, Figure 4 is a side view of the hull showing the state in which the antifouling thin plate is adhered to the outer skin of the hull, and Figure 5 is the y = y of Figure 4.
Cross-sectional view taken along the V line 1 Figure 6 is a modified view of the above-mentioned part 01... Hull shell plate as base material, 2... Antifouling thin plate as adhered member, 3... Adhesive, 4...・Air, 5,5'
...Sheet, 5a...Longitudinal fiber, 5b...Horizontal fiber. Sub-Agent Patent Attorney Yoshihiko Iinuma Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 1 6/1

Claims (1)

[Claims] When bonding a member to be bonded to a base material via an adhesive, a notebook containing a distributing adhesive is interposed between the base material and the member to be bonded, and a number of sheets parallel to each other are inserted as the sheet. By pressing the adhered member against the base material using a nonwoven fabric with a directionality that forms a flow path, air between the two is forced out along the flow path in the sheet. Adhesive method.