JP2001038832A - Honeycomb structure and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make light and wind collide with a wall surface and to be applicable to purposes such as a light shielding body by a method in which in a honeycomb structure produced by a extension method, each ridgeline forming each hexagonal space is formed to be inclined by a specified angle from the perpendicular direction to the upper and lower surfaces of the structure. SOLUTION: In the production of a honeycomb structure to be used in a main part of a panel material, the adhesive application part 51 of an adhesive application roller 5 arranged on a raw material sheet 4 is formed spirally, and when an adhesive is applied in the shape of a stripe on the sheet 4, the stripe 6 to be formed is made to be non-parallel and non-vertical to the feed direction of the sheet 4. In the structure 1, each ridgeline forming each hexagonal column-shaped space 8 is set up to be inclined by 20-70 degree from the perpendicular direction of the upper and lower surfaces of the structure 1. A laminate with the adhesive cured is cut perpendicularly to the stripe 6 direction, and each cut laminate is extended to complete the structure 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a novel honeycomb structure and a method for producing the same.

[0002]

2. Description of the Related Art A honeycomb structure is currently generally used for a main part of a panel material. As a material, aluminum, stainless steel, or the like is often used. Also, the honeycomb structure, which is said to have been developed as an aircraft body material for the first time, has a short history as a building material,
The fact is that it is used only for building exterior materials such as metal curtain walls of skyscrapers and for independent roofs as a continuous slab structure.

[0003] The features of the honeycomb structure are that it is easy to make it lightweight, high in rigidity, and that it is easy to make a factory prefab, and the like. Good thing.

There are several methods for manufacturing a honeycomb structure, one of which is shown in FIG. First,
The adhesive applying roller B is rotated while the original sheet A is being sent out to apply the adhesive C on the original sheet A in a linear manner at an equal pitch, and this is cut and laminated one after another [FIG. )]. The lines of the adhesive C applied at this time are set so as to be shifted by a half pitch every time they are laminated.

Next, the laminate is placed in a hot press D and heated and pressed [FIG. Depending on the type of the adhesive used, there are a high-temperature curing type and a low-temperature curing type, and the apparatus naturally corresponds to this.

Next, the laminate in which the adhesive is cured is cut in a direction perpendicular to the direction of the adhesive stripe E (FIG. 1C). Finally, the honeycomb structure F is completed by expanding the cut individual laminates as shown in FIG. Note that a laminate that has not been expanded is referred to as an “unexpanded block”. Further, strictly speaking, the “honeycomb structure” refers to a structure having a partition partitioned into a hexagonal column shape, and even in the manufacturing method shown in FIG. 5, there is a certain width of the adhesive C applied to the original sheet A. Therefore, as shown in FIG. 6 (a), the adhesive becomes a hexagonal shape in a plan view, but as the width of the adhesive C to be applied becomes narrower, it gradually becomes closer to a square shape as shown in FIG. In FIG. 6, in order to clarify the relationship between the width of the adhesive C and the overall shape, the adhesive portion is separated from the opposing portion on the drawing, but actually all are bonded and integrated.) In the present invention, a structure that can be said to be a square shape as shown in FIG. 6B is also included in the category of the “honeycomb structure”.

In any case, when a honeycomb structure is obtained by such a manufacturing method, there is a form of an unexpanded block, which requires a smaller volume than a completed honeycomb structure, so that transportation costs, storage costs, and the like are reduced. Considering this, it can be said that this is a very efficient manufacturing method.

[0008]

The honeycomb structure thus manufactured is a planar aggregate of hollow hexagonal columnar cells (including a hexagonal shape approximating a square shape). The direction of the ridge line on the peripheral surface of each hexagonal column is limited to “perpendicular” to the top surface and the bottom surface. Of course,
When the honeycomb structure is used as a member requiring rigidity such as being used as a main part (called a honeycomb core) of a building material (eg, a panel material), it is preferable that the honeycomb structure be a right angle. In some applications, a "non-perpendicular" structure may be required. This “other application” will be described later.

However, in the manufacturing method shown in FIG. 5, it is considerably difficult to make the direction of the ridge line of the peripheral surface of each hexagonal column not perpendicular to the top surface and the bottom surface. Of course, for example, as shown in FIG. 7, if the cutting direction is set to a direction G that is not perpendicular to the adhesive line direction E when cutting the adhesive-cured laminate, the production can be performed, In that case, the cutting itself is difficult to perform by diverting existing equipment, and a non-negligible amount of the residual portion H is generated, making effective use of this portion difficult.

[0010]

In view of the above points, the present inventor has finally completed the present invention as a result of diligent research. One of the features of the present invention is that a honeycomb manufactured in accordance with the spreading method. At the point where all the ridge lines forming the individual hexagonal spaces are parallel, and are inclined at least 20 degrees from the direction perpendicular to the upper and lower surfaces of the structure. In the manufacturing method of the structure, according to the spreading method, in the method of applying the adhesive to the original sheet, laminating the original sheet, crimping, cutting, and expanding the laminate, and obtaining the honeycomb structure, the adhesive applying roller There is a point that an application portion of the adhesive to the original sheet is spirally arranged on a peripheral surface of the adhesive application roller.

Here, the "stretching method" is one of the typical methods for obtaining a honeycomb structure together with the corrugating method, and basically means the method shown in FIG. The feature of this method is that an "unexpanded block" which does not have an internal space just by bonding unfolded sheets is first manufactured, and a honeycomb structure is obtained by expanding this.

The term "honeycomb structure" is a term used not only in a completed honeycomb structure but also in a concept including unexpanded blocks. However, the definition regarding the structure of the honeycomb structure that "the ridge lines forming the individual hexagonal spaces are all parallel and inclined at least 20 degrees from the direction perpendicular to the upper and lower surfaces of the structure". Is made on the assumption that the honeycomb structure has been expanded and completed.

The "original sheet" is a material constituting a main portion of the honeycomb structure of the present invention, and usually a thin sheet of aluminum or stainless steel is employed. In the present invention, there is no problem in using such a material, but also includes materials that have not been frequently used in the past, such as plastic sheets and nonwoven fabrics.

The "adhesive applying roller" is a roller arranged at right angles to the moving direction of the original sheet, and applies the adhesive on the original sheet in a linear manner. Conventionally, the application portions are arranged at equal intervals and circumferentially on the peripheral surface of the roller. However, the adhesive application portion of the adhesive application roller employed in the manufacturing method of the present invention is arranged around the periphery of the adhesive application roller. It is spirally arranged on the surface. This "spiral" is set so that the adhesive line is a straight line inclined in a direction different from both the feed direction of the original sheet and the cutting direction of the laminate, and the inclination angle can be freely set depending on the direction of the spiral to be provided. Can be set to

The use of the structure of the present invention is not limited in the present invention. However, when applied to a typical use of a conventional honeycomb structure in which the honeycomb structure is used as a sandwiched panel between two flat plates, the strength of the wall constituting the honeycomb structure is not equal to the direction in which pressure is applied. In terms of surface, it lags behind conventional products.

The fact that the structure is tilted from a direction perpendicular to the upper and lower surfaces of the structure means that light or air which hits the structure of the present invention vertically does not pass through the honeycomb structure as it is, but temporarily It implies a collision. Therefore, it is conceivable to use it as a light-shielding product such as a blind curtain installed in a window. Also, when used as an "eave", the product not only has the effect of being easily folded, but also has the function of passing light only when the solar altitude is low.

Further, when a non-woven fabric is selected as the material of the honeycomb structure according to the present invention, the non-woven fabric is disposed at the opening of the ventilation layer of the building by the "ventilation method" which has recently been settled. Even if the wind blows, it once hits the nonwoven fabric portion, so that rain adheres to the nonwoven fabric portion, and as a result, rainwater does not enter the ventilation layer.

In the case of the structure of the present invention made of nonwoven fabric, it can be suitably used as a filter. For example, at the site of electrostatic coating, a "bag filter" is used when collecting excess powder paint, but if the structure of the present invention is used in this filter part, very efficient collection with low pressure loss is achieved. come true.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the drawings.

FIG. 1B shows an example of a honeycomb structure 1 according to the present invention (hereinafter referred to as "the present invention structure 1"), and the unexpanded block shown in FIG. By expanding 2, the honeycomb structure as shown in (b) can be obtained.

In the structure 1 of the present invention, as shown in FIG. 2, unlike the conventional honeycomb structure, each unit space 8 is not a regular hexagonal prism. That is, the ridge line 3 of the hexagonal prism is not perpendicular to the upper and lower surfaces but is inclined by θ. In this example, the angle θ is about 25 degrees, but may be any angle as long as it is 20 degrees or more and 70 degrees or less.

Next, FIG. 3 shows a gluing apparatus which is a characteristic part of the manufacturing method of the structure 1 of the present invention. The glue applying section 51 of the adhesive applying roller 5 arranged on the original sheet 4 is shown.
Are spirally provided on the roller. Therefore, the line 6 in which the adhesive is applied in the form of a line on the original sheet 4 is
It is neither parallel nor perpendicular to the feed direction of the original sheet 4. In addition, the original sheet 4 after applying the adhesive is cut into appropriate widths and laminated, and at this time, the striations of the applied adhesive are set so as to be shifted by a half pitch every time the laminate is laminated. Is the same as before.

FIG. 4 is a schematic plan view showing a method of cutting the laminate 7 obtained by the gluing device shown in FIG.
The rectangular parallelepiped laminated body 7 (the figure is a plan view and therefore rectangular) is 1 m wide × 3 m long. If this is cut horizontally as shown in the figure, an unexpanded block having a length of 1 m is obtained. You can do 2. In the case where a long unextended block (having a length of more than 1 m and not more than 3 m) is required, the cutting direction may be changed by 90 degrees from that in the figure. In addition, since the illustrated stripe 6 is inclined at 45 degrees, the inclination of the ridge line of each unit space 8 becomes equal regardless of cutting in any of the vertical and horizontal directions. The tilt angle changes.

[0024]

As described in detail above, the honeycomb structure and the method for manufacturing the same according to the present invention are honeycomb structures manufactured according to the stretching method, and form individual hexagonal spaces. Each ridge line is inclined at an angle of 20 degrees or more and 70 degrees or less than a direction perpendicular to the upper and lower surfaces of the structure. In a method of obtaining a honeycomb structure by performing lamination of an original sheet, pressure bonding, cutting, and stretching of a laminate, an application section of an adhesive application roller that is in charge of applying an adhesive to the original sheet includes: The invention is characterized by being spirally arranged on the peripheral surface, and is an extremely advanced invention having the following effects.

1) Since each hexagonal space (unit space) in the honeycomb structure is inclined from a direction perpendicular to the upper and lower surfaces of the main body, light and wind collide with the walls.
It can be used for new applications such as light shields or filters. 2) Regarding the manufacturing method, the existing manufacturing equipment can be used except for the adhesive application roller. 3) Since the striated lines of the original sheet are slanted, no residue is generated during manufacturing.

[Brief description of the drawings]

FIGS. 1A and 1B are perspective views each showing an example of a honeycomb structure according to the present invention.

FIG. 2 is a schematic cross-sectional view showing a part of the honeycomb structure shown in FIG. 1 (b), including a side view.

FIG. 3 is a schematic perspective view showing an example of a gluing device used in the method of the present invention.

FIG. 4 is a schematic plan view showing a method of cutting a laminate obtained by the gluing device shown in FIG.

5 (a) to 5 (d) schematically show an example of a method for manufacturing a honeycomb structure by a stretching method with time and schematically, and FIGS. 5 (a), 5 (c) and 5 (d) are perspective views. , FIG.
Is a front view.

FIGS. 6A and 6B are schematic plan views showing the honeycomb structure itself.

FIG. 7 is a schematic plan view showing an example of a method for manufacturing a honeycomb structure of the present invention using a conventional honeycomb structure manufacturing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Honeycomb structure according to the present invention 2 Unexpanded block 3 Ridge line 4 Original sheet 5 Adhesive application roller 51 Adhesive application section 6 Strips 7 Laminate 8 Unit space

Claims (3)

[Claims] 1. A honeycomb structure manufactured according to a stretching method, wherein each ridge forming a hexagonal or quadrangular prism-shaped space has an angle of 20 degrees from a direction perpendicular to upper and lower surfaces of the structure. A honeycomb structure characterized by being inclined at least 70 degrees or less. 2. The honeycomb structure according to claim 1, wherein a nonwoven fabric is used as a main material of the main body. 3. A method for obtaining a honeycomb structure by applying an adhesive to an original sheet, laminating the original sheet, press-bonding, cutting, and expanding the laminated body according to an expansion method, wherein the adhesive is applied to the original sheet. A method for manufacturing a honeycomb structure, wherein an application section of an adhesive application roller in charge is spirally arranged on a peripheral surface of the adhesive application roller.