JPS61252144A - Laminated mat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is typified by a glass fiber mat for heat insulation and sound absorption. Regarding the laminated mat.

[Conventional technology]

For example, a fiber mat is produced by supplying fibers together with a binder onto a cotton collection conveyor, and collecting the supplied fibers onto the cotton collection conveyor by suction through holes formed in the cotton collection conveyor. During cotton collection, a strong suction force acts on the lower fibers, but as the thickness increases, the suction force acting on the upper fibers decreases, and the degree of consolidation of the fibers due to the suction force decreases. Because the upper side is smaller, fiber cloaks have uneven density in the thickness direction, with the lower fibers having a higher density. Therefore, when obtaining a fiber mat with a particularly large thickness, if the fiber mantle of the desired thickness is produced as a single item, that is, a single layer, the fiber density on the surface side and the fiber density on the surface side will be different. are very different. On the other hand, as mentioned above, when a fiber mat with a desired thickness is produced by laminating a plurality of thin fiber mats as a laminated fiber mat, each thin mat has fibers in the thickness direction. Although there is some variation in density, since the fiber density is thin, the variation in fiber density is small, which makes it possible to reduce the difference in density between the front and back sides of the laminated mat, making it easier to achieve uniformity in the thickness direction. It is. This means that even if a thick mat is compressed in the thickness direction and packaged compactly, it will return to its original thickness when unpacked, and will have good insulation performance. It is.

In conventional laminated mats of this type, a plurality of thin mats that are separated from each other are stacked on top of each other (for example, Japanese Patent Publication No. 58-37900).

However, when using this conventional laminated mat, the thin-walled mats are separated, so it is necessary to align the ends of the thin-walled mantles and overlap them. If the thin mat is of low rigidity, even if you try to shift the thin mat to align the edges, the thin mat will only be deformed due to the frictional resistance between the two, and you will not be able to position them as you want, which will be a hassle. Despite this, there was a drawback that the edges tended to be uneven. In particular, when bonding thin mats, the adhesive also acts as a resistance to positioning, making it even more difficult to align the edges. Moreover, when aligning the edges, the thin mat partially stretches, resulting in wrinkles (wavy).

[Problem that the invention seeks to solve]

The present invention was conceived in view of the above circumstances, and its purpose is to provide a laminated mat with uniform edges, no wrinkles, and which can be manufactured with good workability.

[Means for solving problems]

The characteristic configuration of the laminated mat according to the present invention, which was taken to achieve the above object, is that the thin mats are formed into a series of single mats that are folded so that they are connected only at the surface portions on the overlapping sides. It is in. and,
The effects and effects thereof are as follows.

[For production]

Since multiple thin-walled cloaks are constructed as a single unit with the overlapping parts of one folded mat, simply folding the thin-walled mats allows the thin-walled cloaks to be folded without applying excessive force to the thin-walled cloaks. It can be stacked so that the edges are aligned and there are no wrinkles.

〔Effect of the invention〕

Therefore, the present invention has made it possible to provide a laminated mat that does not require any special edge alignment work, has good workability, has aligned edges of the thin mat, and can be produced without wrinkles.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

This is a laminated mat made of glass fiber used as a heat insulating material, sound absorbing material, etc. As shown in Figure 1, this is a laminated mat made of glass fiber that is made by overlapping two thin glass fiber mats (1) in their thickness direction. In addition, these are wrapped with front and back skin materials (2).

Both of the thin mats (1) are constructed in a series with one mat (3) made of glass fiber that is folded so as to be connected only at the surface portions on the overlapping sides. The means for folding the one mat (3) as described above is as shown in FIG.
) is a means for forming a cut (5a) extending from one surface to near the other surface and continuous along the bent part at the bent part at the center in the left-right width direction.

The thin mats (1) are not fixed in an overlapping state by adhesion, but are fixed in an overlapping state by wrapping with a skin material (2).

Moreover, the thin mat (1) and the front and back skin materials (2) are bonded together with an adhesive (6).

To give an example of the actual values of the thickness 1) of the mat (3) and the depth 11) of the cut (5a), the thickness of the mat (3) is 1.
) is 20 to 100 m, and the depth of the cut (5a) is H
) is a dimension that is 90 to 98% of the thickness 1) of the mat (3).

Next, an apparatus for producing the laminated mat will be described.

As shown in Fig. 3 and Fig. 4, the production device
) and a conveyor (7) on which the mat (3) is placed and transported in the longitudinal direction, and a cutter (8) that forms a cut (5a) from below the mat (3) at the center of the width direction of the transport mat (3) as the mat (3) is transported.
), a guide (9) that scoops up and folds the mat part on the minus side of the cut (5a) so that it gradually overlaps the mat part on the other side as it is transported, and A guide (10) that slides into alignment and a folded mat (
3) from above and below to press both thin mats (1) together; a sprayer (12) that applies adhesive (6) to the top surface of the folding mat (3); The upper and lower skin materials (2) that are fed out are placed on a folding mat (
3) to guide the rollers (13) in close contact with the upper and lower surfaces of the
), a device (14) for joining opposite side ends of the picture surface material (2), and a cutter (15) for cutting the laminated mat into a regular size, thereby continuously producing the laminated mat. is configured to do so. The joining device (14) includes:
Fold and guide the side end portions of the upper skin material (2) so that they overlap both sides of the folding mat (3), and place the lower end of the side end portions on the top surface of the side end portions of the lower skin material (2). A guide (16) that bends and guides the lower skin material (2) so as to overlap, and a portion of the lower skin material (2) that protrudes laterally beyond the end of the upper skin material (2) overlaps with the upper surface of the end of the upper skin material (2). It has a guide (17) that guides the bending. In addition, an adhesive (6) is used to bond the folding cloak (3) and the lower skin material (2).
) is applied to the lower skin material (2) by a roller.

Note that the present invention may be implemented as follows.

(i) As shown in Figure 5, apply adhesive (6') to the thin cloak (1) using a sprayer (18) as shown by the imaginary line in Figure 3 to form a thin mat (1). Fix with adhesive.

(ii) As shown in Figure 6, in one 77g (3),
A cut extending from one surface to near the other surface (5a
) and cuts (5b) reaching from the other surface to near one surface, thereby forming three or more mats (3) (the drawing shows four), as shown in FIG. )
A laminated cloak is constructed by overlapping three or more thin mats (1) by folding the mats.

(iii) one mat (3) as shown in Figure 8;
Cuts (5C) are formed in the bent part of the mat (3) so as to penetrate the bent part in the thickness direction and are discontinuous along the bent part, so that the mat (3) is folded into a state where it is connected only at the surface portions on the overlapping sides. Configure it so that it can be folded. The length N) of the cut (5c) and the interval (d) between the cuts (5c) are approximately 40 to 700 mm in length and 3 to 30 mm in distance (d).

[Brief explanation of drawings]

1 to 4 show examples of the laminated mat according to the present invention, FIG. 1 is a longitudinal sectional view, FIG. 2 is a longitudinal sectional view of the mat, and FIGS. 3 and 4 are side views of the manufacturing device. A diagram and a plan view,
5 to 8 show another embodiment, FIGS. 5 and 7 are longitudinal sectional views, FIG. 6 is a longitudinal sectional view of the mat, and FIG. 8 is a perspective view of the mat. (1)・・・Thin mat, (3)・・・・・・
Matt, (5a). (5c)...... cut.

Claims (1)

[Scope of Claims] [1] A laminated mat in which a plurality of thin mats (1) are stacked one on top of the other in their thickness direction, wherein the thin mats (
A laminated mat consisting of one mat (3) which is formed by folding the mats (1) and (3) so that they are connected only at the surface portions of the overlapping sides. [2] The means for allowing the one mat (3) to be folded so that it is connected only at the overlapping surface portions extends from one surface to near the other surface at the bent portion of the mat (3). , and means for forming a continuous cut (5a) along the bent part, Claim [1]
Laminated mat described in section. [3] A means for allowing the one mat (3) to be folded so that it is connected only at the surface portions on the overlapping sides penetrates the bent portion of the mat (3) in the mat thickness direction, and The laminated mat according to claim 1, wherein the laminated mat is a means for forming cuts (5c) that are interrupted along the length of the mat.