JP2007239297A - Heat insulating mat made of inorganic fiber, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating mat which is equipped with both elasticity in its width direction and proper heat insulation properties in its thickness direction, and a manufacturing method for the heat insulating mat. <P>SOLUTION: This inorganic heat insulating mat (6, 106, 206 or 306) with a length (p), a width (q) and a thickness (r) comprises: front and back surfaces (PQ) and (PQ) which are elongated in its lengthwise direction (P) and its width direction (Q); a long side surface (PR) which is elongated in its lengthwise direction (P) and its thickness direction (R); and a short side surface (QR) which is elongated in its width direction (Q) and its thickness direction (R). Inorganic fibers (1) are laminated in the width direction (Q). Characteristically, a laminated surface (L) of the inorganic fibers (1) is at least partially inclined with respect to the log side surface (PR) of the heat insulating mat. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a heat insulating mat made of inorganic fibers and a method for producing the same, and more specifically,
The present invention relates to a heat insulating mat made of inorganic fibers and a method of manufacturing the same, in which a laminated surface of inorganic fibers constituting the heat insulating mat is inclined with respect to the long side surface of the heat insulating mat.

Inorganic fibers such as glass fibers are excellent in heat insulation. Many heat insulating materials comprising heat insulating mats obtained by depositing or laminating and forming inorganic fibers using this property are known.
FIG. 18 shows such a heat insulating mat. When the heat insulating mat is a rectangular parallelepiped, the heat insulating mat has a length direction (P) which is the longest side direction, a width direction (Q) which is the long side direction in the cross section of the heat insulating mat, and a thickness which is the short side direction in the cross section. Direction (R)
And has a length p, a width q, and a thickness r. That is, the heat insulating mat has a front surface and a back surface (PQ surface), a long side surface (PR surface), and a short side surface (QR surface). In many known heat insulating mats, as shown in FIG. 18, the inorganic fibers are deposited or laminated in the R direction as shown. That is, the laminated surface of the inorganic fibers exists in a plane parallel to the PQ plane.
Then, the heat insulating mat is coated with a known means such as a thermoplastic resin film to obtain a heat insulating material.

As described above, the heat insulating mat (the heat insulating mat in which inorganic fibers are stacked in the R direction) having the laminated surface on the PQ surface is compressible in the R direction (heat insulating mat thickness direction). Excellent heat insulation in the direction.
And the heat insulating material consisting of such a heat insulating mat is arranged in a structure such as a house such that the PR surface or the QR surface is up and down, and the PQ surface faces the outside and the room,
Functions as a heat insulator.

As an example of construction of the heat insulating mat, for example, as shown in FIG. 17, the heat insulating mat is disposed in a space between an exterior base material 71 and an interior base material 72.
Between the interior base material receiving material 75 and the interior base material receiving material 75 and the partition wall receiving material 76. FIG. 17 is a plan view showing an example of housing construction by a wooden frame construction method.

For example, in the case where the heat insulating mat shown in FIG. 18 is arranged between the stud 74 and the interior base material receiver 75 as shown in FIG. 19, the distance between the stud 74 and the interior base material receiver 75. When s is smaller than the width q in the width direction (Q) of the heat insulating mat,
Since the heat insulating mat cannot be compressed in the width direction (Q), the heat insulating mat cannot be disposed between the intermediate post 74 and the interior base material receiving material 75. Although it is conceivable to cut the heat insulating mat so that the width q of the heat insulating mat becomes s, resources are wasted.

As shown in FIG. 19, if the heat insulating mat is compressed in the width direction (Q) of the heat insulating mat so that the width can be set to s, the insulating mat is disposed between the stud 74 and the interior base material receiving material 75. Is possible. However, since the laminated surface extends in the Q direction (a surface parallel to the PQ surface), such a mat cannot be compressed in the Q direction.

Therefore, a heat insulating mat that can be compressed in the width direction (Q) of the heat insulating mat has been proposed.
Patent Document 1 shown below discloses an inorganic fiber mat in which inorganic fibers are deposited and formed into a plate shape as shown in FIG. 18 and the inorganic fibers are arranged in a plane parallel to the PQ surface. A slit perpendicular to both PQ surfaces is formed so as to leave an uncut portion on the opposite surface, and this slit portion can be bent 180 degrees in the direction to open the slit, and is bent at the slit portion. Thus, the arrangement direction of the inorganic fibers facing the PQ surface direction is set as the R direction (thickness direction of the heat insulating mat), and the laminated surface of the inorganic fibers is made parallel to the PR surface.
JP 07-116670 A

However, since the mat disclosed in Patent Document 1 has a slit extending in the R direction, it has a drawback that the heat insulating property is greatly inferior in the slit portion.

For this reason, in order to solve the drawbacks of the above-mentioned Patent Document 1, in Patent Document 2 below, a molded body in which inorganic fibers are deposited and compressed and heated is cut into a predetermined width along the conveying direction, and the cut molded body is By disclosing a method of reversing 90 degrees in the direction orthogonal to the conveying direction, a heat insulating mat in which the laminated surface of inorganic fibers is parallel to the PR surface is disclosed.
JP 2003-181963 A

In the heat insulating mat of Patent Document 2, the cut molded body is 9 in the manufacturing process.
Since the inversion is performed by 0 degree and the cut formed bodies are then assembled by the collecting machine, the closeness between the cut molded bodies is increased. On the other hand, since the heat insulating mat of the above-mentioned Patent Document 1 is one that is reversed by a slit after manufacture, the adhesion at the slit portion is not good. For this reason, the heat insulating property of the heat insulating mat of Patent Document 2 is better than that of Patent Document 1.

In any of the above-mentioned known documents, only those in which the laminated surface exists on a plane parallel to the PQ plane, the PR plane, or the QR plane are disclosed.

In the heat insulating mat of Patent Document 2, the laminated surface of the inorganic fibers is arranged in parallel with the PR surface, so that the heat insulating mat is in comparison with the heat insulating mat in which the laminated surface is arranged in parallel with the PQ surface. Inferior.
Accordingly, there is a need for a heat insulating mat that can be compressed in the width direction (Q) of the heat insulating mat and that has further improved heat insulating properties in the thickness direction.

In order to solve the above problems, according to the present invention, the front and back surfaces extending in the length direction and the width direction, the long side surface extending in the length direction and the thickness direction, and the short side surface extending in the width direction and the thickness direction are provided. And an inorganic heat insulating mat formed by laminating inorganic fibers in the width direction, wherein at least a part of the laminated surface of the inorganic fibers is inclined with respect to the long side surface of the heat insulating mat. An inorganic fiber heat insulating mat is provided (claim 1).

Preferably, the laminated surface of the inorganic fibers is inclined at 10 to 45 degrees with respect to the long side surface of the heat insulating mat.
Preferably, the heat insulating mat is divided into two or more in the width direction (Claim 3).

According to another embodiment of the present invention, inorganic particulate matter is disposed between the laminated surfaces of the inorganic fibers (Claim 4). Preferably, 10 to 80% by weight of inorganic particulate matter is arranged with respect to the total weight of the heat insulating mat (Claim 5).

According to the present invention, there is provided a method for manufacturing the above-described inorganic fiber heat insulating mat,
(A) a fiberizing step for fiberizing an inorganic substance to form an inorganic fiber;
(B) a deposition step of depositing the inorganic fibers in the laminating direction to form an inorganic fiber laminate;
(C) a bending step of compressing the inorganic fiber laminate in the conveying direction to incline the laminated surface of the inorganic fibers with respect to the conveying direction to form a bent laminate;
(D) a pressure drying step of pressing and drying the bent laminate;
(E) a cutting step of cutting the pressure-dried bent laminate into a desired length in the transport direction;
(F) a turning step of turning the bent laminate cut to a desired length by 90 degrees about an axis extending in the width direction perpendicular to the conveying direction on a horizontal plane;
A method for producing a heat insulating mat made of inorganic fibers is provided (claim 6).
Moreover, according to the present invention, there is provided a method for producing the above-mentioned inorganic fiber heat insulating mat,
(A) a fiberizing step for fiberizing an inorganic substance to form an inorganic fiber;
(B) a deposition step of depositing the inorganic fibers in the laminating direction to form an inorganic fiber laminate;
(C ′) a bending step in which the inorganic fiber laminate is compressed in the width direction perpendicular to the conveying direction in the horizontal plane so that the laminated surface of the inorganic fibers is inclined with respect to the width direction to form a bent laminate;
(D) a pressure drying step of pressing and drying the bent laminate;
(E ′) a cutting step of cutting the pressure-dried bent laminate to a desired width in the width direction;
(F ′) a turning step of turning the cut and bent laminate cut to a desired width by 90 degrees about an axis extending in the transport direction;
A method for producing a heat insulating mat made of inorganic fiber is provided.

Furthermore, according to the present invention, there is provided a method for producing the above-mentioned inorganic fiber heat insulating mat,
(A) a fiberizing step for fiberizing an inorganic substance to form an inorganic fiber;
(B) a deposition step of depositing the inorganic fibers in the laminating direction to form an inorganic fiber laminate;
(C ″) By inserting and withdrawing a hanging needle that reciprocates in the laminating direction into the inorganic fiber laminate, the laminating surface of the hanging needle insertion portion and its peripheral portion is bent in the laminating direction, and the laminated surface of the inorganic fibers is A bending step for inclining and bending the laminate;
(D) a pressure drying step of pressing and drying the bent laminate;
(E ′) a cutting step of cutting the pressure-dried bent laminate to a desired width in the width direction;
(F ′) a turning step of turning the cut and bent laminate cut to a desired width by 90 degrees about an axis extending in the transport direction;
A method for producing a heat insulating mat made of inorganic fibers is provided.
Instead, prior to the (c ″) bending step, (d) the inorganic fiber laminate may be pressurized and dried (claim 9).

Moreover, according to the present invention,
(A) a fiberizing step for fiberizing an inorganic substance to form an inorganic fiber;
(B ′) depositing inorganic particulates together with inorganic fibers, inclining the laminated surface of the inorganic fibers with the inorganic particulates to form a bent laminate;
(D) a pressure drying step of pressing and drying the bent laminate;
(E ″) a cutting step of cutting the pressure-dried bent laminate to a desired length in the transport direction or to a desired width in a width direction orthogonal to the transport direction on a horizontal plane;
(F ″) a turning step of turning the cut and bent laminate cut to a desired length or a desired width by 90 degrees about a shaft extending in the width direction or an axis extending in the transport direction (X) as a central axis;
A method for producing a heat insulating mat made of inorganic fiber is provided.

According to the first aspect of the invention, since at least a part of the laminated surface of the inorganic fibers is inclined with respect to the long side surface of the heat insulating mat, heat insulation is performed in a direction orthogonal to the long side surface (width direction of the heat insulating mat). The mat can be compressed and the heat insulating property is improved as compared with the case where the laminated surface is parallel to the long side surface of the heat insulating mat. A heat insulating mat having both of the above is provided. Moreover, since the said laminated surface is not parallel with the front surface and back surface of a heat insulation mat, it also has the effect that it has the elasticity of a thickness direction (it can compress also in the thickness direction of a heat insulation mat).
According to invention of Claim 2, since the said laminated surface inclines at 10-45 degree | times with respect to the long side surface of the heat insulation mat, without impairing the compressibility of the width direction of a heat insulation mat, heat insulation property. Thus, a heat-insulating mat with improved resistance is provided.
According to the invention described in claim 3, since the heat insulating mat is divided into two or more in the width direction, when the heat insulating mat is arranged in a small size place,
There is no need to cut the heat-insulating mat, and it is possible to save labor at the construction site, prevent the generation of waste materials due to the cutting of the heat-insulating mat, and prevent the scattering of inorganic fibers due to the work of cutting the heat-insulating mat. Is possible.
According to invention of Claim 4, since the said laminated surface is inclined by arrange | positioning the inorganic granular material obtained by crushing the inorganic fiber which became unnecessary between the said laminated surfaces, reuse of resources There is provided an insulating mat which has an effect of being able to be achieved and can be easily manufactured.
According to the invention described in claim 5, a heat insulating mat is provided in which the heat insulating property is sufficiently improved and the stretchability in the width direction of the heat insulating mat is not impaired.

According to the invention described in claim 6, the lamination surface of the inorganic fibers can be inclined only by a simple operation of compressing the inorganic fiber laminate in the transport direction,
It is possible to easily manufacture an inorganic fiber heat insulating mat having both stretchability (or compressibility) and heat insulating properties.
According to the invention described in claim 7, the laminated surface of the inorganic fibers can be inclined only by a simple operation of compressing the inorganic fiber laminated body in the direction orthogonal to the transport direction, It is possible to easily manufacture an inorganic fiber heat insulating mat having both of the above.
According to the invention described in claim 8, the laminated surface of the inorganic fibers can be inclined only by a simple operation of inserting and withdrawing the hanging needle, and the product made of the inorganic fibers having both compressibility and heat insulation properties. An insulating mat can be easily manufactured.
According to the invention of claim 9, (c ″) by performing pressure drying prior to the bending step, the inorganic fibers are firmly bonded by the binder, and when the hanging needle is inserted, the inorganic fiber This has the effect that the shape of the entire fiber laminate is not destroyed.
According to the invention described in claim 10, the laminated surface of the inorganic fibers can be inclined only by a simple operation of arranging the inorganic granular material between the laminated surfaces, and both the stretchability and the heat insulating property can be achieved. A heat insulating mat made of inorganic fibers can be easily produced. Moreover, since the inorganic granular material obtained from the inorganic fiber which became unnecessary is used, it has the effect that a manufacturing cost can be reduced and the reuse of resources can be aimed at.

FIG. 1 is a perspective view showing a heat insulating mat 6 according to an embodiment of the present invention.
The heat insulating mat of the present invention comprises an inorganic fiber fiber laminate obtained by depositing and laminating inorganic fibers 1. The heat insulating mat shown in FIG. 1 is a rectangular parallelepiped, and has a length direction P that is the longest side direction, a width direction Q in the cross section of the heat insulating mat, and a thickness direction R that is the short side direction in the cross section. Front (PQ surface), back (PQ surface),
Two long side surfaces (PR surface) as the first side surface and two short side surfaces (Q surface as the second side surface)
R surface).
In addition, in FIG. 1, although the lamination | stacking surface L of the laminated body of an inorganic fiber is shown typically, the inorganic fiber 1 itself is not shown. The same applies to FIGS.
In the illustrated embodiment, a rectangular parallelepiped heat insulating mat is shown, but a cubic shape may be used.

In the conventional heat insulating mat, the laminated surface L of the inorganic fibers is the front surface or the back surface (P
Q surface) or long side surface (PR surface). However, the heat insulating mat 6 of the present invention is characterized in that the laminated surface L is inclined with respect to the long side surface (PR surface).
All the laminated surfaces L need not be inclined with respect to the long side surface (PR surface), and may be a part as in the embodiments shown in FIGS. This is because when the portion is inclined, the heat insulating property in the thickness direction is improved when viewed as the whole heat insulating mat.

The angle W with respect to the long side surface (PR surface) of the laminated surface L is preferably 10 to 45 degrees.
When the inclination angle W of the laminated surface L of the inorganic fibers with respect to the thickness direction of the heat insulating mat 6 is less than 10 degrees, the heat insulating property cannot be improved. On the other hand, when the inclination angle W exceeds 45 degrees, the heat insulating property is improved, but the compressibility in the width direction Q of the heat insulating mat 4 is deteriorated.

In the heat insulating mat 4 shown in FIG. 1, the laminated surface L appearing on the short side surface (QR surface) has a “sawtooth shape”, but may have a “substantially sine curve shape” as shown in FIG. Moreover, the shape of the letter “ku” may be used.

The heat insulating mat 6 shown in FIG. 1 has four rotating / bending laminates 5 arranged in parallel in the Q direction. The rotating / bending laminate 5 will be described later in a method for manufacturing a heat insulating mat.
Thus, it is preferable that the heat insulating mat is divided into two or more in the width direction (Q direction). As described above, when the heat insulating mat is divided into two or more in the width direction, it is not necessary to cut the heat insulating mat when the heat insulating mat is arranged in a small size, and the number of the rotationally bent laminates is reduced. It becomes possible to install it in a small-sized place.
In the illustrated embodiment, the width is divided into four in the width direction (Q direction), but the present invention is not limited to being divided into two or more in the width direction, and is divided into four. Note that this is not a limitation.

FIG. 2 is a side view showing only a short side surface (QR surface) of a heat insulating mat 6 ′ according to another embodiment of the present invention, and the heat insulating mat 6 ′ has a short side surface (QR surface) as described above. 1 is the same as the heat insulating mat 6 shown in FIG. 1 except that the appearing laminated surface is “substantially sinusoidal”.
The heat insulating mat 106 shown in FIG. 9 is the same as the heat insulating mat 6 shown in FIG.
The heat insulating mat 6 shown in FIG. 1 is manufactured by a different method.

FIG. 3 is a perspective view showing a heat insulating mat 206 according to still another embodiment of the present invention.
In the heat insulating mat 106 shown in FIG. 3, the laminated surface L is inclined with respect to the long side surface in the range of M, and 10 to 45 with respect to the long side surface in the range of N.
Inclined at a degree. As described above, it is not necessary for all the laminated surfaces L to be inclined with respect to the long side surface (PR surface). This is because heat insulation is effectively achieved in the range of N and M.

FIG. 4 is a side view showing only the short side surface of the heat insulating mat 306 of still another embodiment of the present invention.
As shown in FIG. 4, the heat insulating mat 306 is dotted with portions S (hereinafter referred to as “inclined portions”) where the laminated surface L is inclined with respect to the long side surface.

In the inclined portion S, the inorganic granular material 311 is included, and by including the granular material in this way, the laminated surface L is inclined. In addition, although not shown clearly, in FIG. 4, the inorganic granular material 311 is dotted in the inclined part S. In FIG.
The material of the inorganic particulates 311 is preferably the same as the material of the inorganic fibers 1. For example, when the inorganic fibers 1 are glass fibers, the inorganic particulates 311 are also glass particulates. It is preferable to use defibrated cotton (waste cotton) obtained by crushing inorganic fibers that are no longer needed as the inorganic particulate matter, because resources can be recycled.

The inorganic particulate matter is contained in an amount of 10 to 80% by weight based on the weight of the entire heat insulating mat (that is, the total weight of the inorganic fiber and the inorganic particulate matter). If it is less than 10% by weight, the laminated surface L cannot be sufficiently inclined. On the other hand, if it exceeds 80% by weight, the heat insulating mat is mainly composed of granular materials, so that the compressibility deteriorates.
The size of the inorganic granular material preferably has a diameter of 5 to 30 mm. 5m
If it is less than m, the laminated surface L cannot be sufficiently inclined, and if it exceeds 30 mm, the inclination becomes too large.
Moreover, the shape of the inorganic granular material is not particularly limited, and may be spherical or amorphous.
In addition, when the inclination angle of the laminated surface L with respect to the 1st side surface of a heat insulation mat shall be 10-45 degree | times, content of the inorganic granular material with respect to the above-mentioned inorganic fiber and the magnitude | size of a granular material are considered.

1 to 4 and 9 may be used as they are, and FIG.
As shown in FIG. 6, a heat insulating material 7 may be formed by covering with a known outer skin material (packaging bag) such as a thermoplastic resin film. And it arrange | positions between the walls of a house.
FIG. 17 shows an example of the arrangement of the heat insulating material 7 in the housing construction by the wooden frame construction method. The heat insulating material 7 is disposed in a space between the exterior base material 71 and the interior base material 72 so that the PQ surface faces the room and the exterior. In the illustrated embodiment, the spacer 74 and the interior base material are disposed. Between the interior receiving material 75 and the interior base material receiving material 75 and the partition wall receiving material 76. The heat insulating material made from the heat insulating mat of the present invention is
Not only wooden shaft construction method, but also wooden panel construction method (prefabrication method), frame wall construction method (2
× 4 construction method), steel frame construction method, steel panel construction method, etc.

The heat insulating mat of the present invention can be manufactured by the following manufacturing method. However, the heat insulating mat of the present invention is not limited to one manufactured by the following manufacturing method.

<First manufacturing method>
The heat insulating mat shown in FIGS. 1 and 2 is manufactured by the first manufacturing method. FIG. 5 is a side view schematically showing an apparatus used in the first manufacturing method.
The first manufacturing method includes (a) a fiberizing step, (b) a deposition step, (c) a bending step, (d) a pressure drying step, (e) a cutting step, and (f) rotation. It consists of a process.
According to a preferred embodiment, the first manufacturing method comprises: (a) the inorganic material is made into an inorganic fiber 1 by a fiberizing step, (b) the inorganic fiber 1 is made an inorganic fiber laminated body 2 by an accumulation step, and (c ) In the bending step, the inorganic fiber laminate 2 is made into the bending laminate 3, (d) The bending laminate 3 is pressurized and dried in the pressure drying step, and (e)
The bent laminate 3 pressed and dried by the cutting step is cut to a desired length (j) in the conveying direction to obtain a cut / bent laminate 4, and (f) the cut / bent laminate 4 by the rotating step. Is rotated 90 degrees around the axis extending in the width direction (Y) perpendicular to the conveying direction (X) in the horizontal plane, and each of the cut and bent laminates 4 is turned into a bent and bent laminate 5 to form a heat insulating mat 6. Get.

(A) A fiber formation process is a process of obtaining inorganic fibers, such as glass fiber and rock wool, by fiberizing an inorganic material. The fiberization of the inorganic material can be performed by a known method, and a known device can be used as the fiberizing device 21. For example, when the inorganic material is glass, the molten glass is converted into glass fiber by the fiberizing device 21.
Although not shown in detail in FIG. 5 because it is a known technique, as shown in FIG. 15, as an example of a fiberizing apparatus, when glass is used, a glass raw material is put in the glass melting furnace 13. The raw material melted in the melting tank 15 is sent to the clarification tank 17, the molten glass is dropped from the clarification tank onto the rotating body 21 ', and the molten glass is fiberized by the centrifugal force of the rotating body 21'.

An adhesive (binder) is applied to the inorganic fiber 1 falling from the fiberizing device 21 by an adhesive applying device 23. As the adhesive, a known material such as a phenol resin can be used. As a coating method, a known method such as spraying can be used. In the illustrated embodiment, (b) the adhesive is applied before the deposition step, but (d) the adhesive can be applied if it is before the pressure drying step, and the present invention (B) It is not limited to the method of apply | coating an adhesive agent before a deposition process.

(B) In the deposition step, the inorganic fibers produced in the (a) fiberizing step are dropped and deposited on the known cotton collecting machine 31 to form the inorganic fiber laminate 2.
After being deposited on the cotton collecting machine 31, the inorganic fiber laminate 2 is conveyed by a known conveying means such as the conveying conveyor 33.
At the time of deposition, the inorganic fibers 1 are deposited and laminated in the vertical direction. Hereinafter, this (b)
The vertical direction (stacking direction) in the deposition process is referred to as the “Z direction”, the transport direction of the transport conveyor 33 is referred to as the “X direction”, and the direction orthogonal to the X direction (the width direction of the transport conveyor 33) in the horizontal plane. Say “Y direction”.

In the inorganic fiber laminate 2, the inorganic fibers are laminated in the Z direction. Therefore, the laminated surface L of the inorganic fibers exists in the XY plane, and the longitudinal sectional shape of the laminated surface L appears as a horizontal straight line. (Appears as a straight line extending in the X direction in FIG. 5). In the present invention, the laminated surface L is inclined with respect to the XY plane. The (c) bending step of the first manufacturing method of the present invention is such that the laminated surface L existing on such an XY plane is bent in the X direction and the laminated surface L is inclined with respect to the XY plane.
In the first production method of the present invention, a compressive force is applied to the inorganic fiber laminate 2 in the X direction, the inorganic fibers constituting the inorganic fiber laminate 2 are buckled, and the laminated surface is bent in the X direction. By making the L vertical cross-sectional shape of the laminated surface "saw tooth"
Shape (FIG. 1), “substantially sine curve” shape (FIG. 2), and / or outline “ku”
The laminated surface is inclined with respect to the XY plane.

In order to apply a compressive force in the X direction to the inorganic fiber laminate, in the first manufacturing method, the inorganic fiber laminate 2 conveyed in the X direction is temporarily conveyed by the holding plate 45 disposed on the downstream side. Suppress and reduce the conveyance speed (may be zero). Since the conveyance speed of the upstream portion of the pressure plate 45 is reduced by the pressure plate 45, the inorganic fiber laminate 2 is bent, and the vertical cross-sectional shape of the laminated surface is “sawtooth” as shown in FIG. ”Shape, a“ substantially sine curve ”shape as shown in FIG. 2, or a general“ <”shape.

Thus, as an example of the manufacturing machine used in the (c) bending process, as shown in FIG. 5, a conveyor 41 that is continuous with the transport conveyor 33 and has the same transport speed as the transport conveyor 33 is disposed.
A holding plate 45 is disposed on the downstream side of the conveyor 41. The holding plate 45 is
In the illustrated embodiment, it can move up and down, and intermittently suppresses the inorganic fiber laminate 2 on the conveyor 41 from above. The inclined surface 47 of the holding plate 45 is inclined within a range of 10 to 45 degrees with respect to the XY plane.

By restraining the inorganic fiber laminate 2 conveyed by the conveyor 41 by the restraining plate 45 and reducing the conveyance speed, the inorganic fibers constituting the inorganic fiber laminate 2 are buckled and the laminated surface is bent in the X direction. Can do.
The inclination angle of the laminated surface with respect to the XY plane is determined by two operations of (1) slowing the conveying speed by the holding plate 26 and (2) pressing from above by the holding plate 45. Adjust by balancing the two elements.

Preferably, as shown in FIG. 5, the conveyor 41 has an inclined surface 43 in the range of 10 to 45 degrees with respect to the upper surface (XY surface) of the transport conveyor 33. In other words,
The longitudinal sectional shape of the corrugated conveyor 41 on the XZ plane is a waveform. Thus, when the surface of the conveyor 41 is corrugated, the inclined surface 4 in addition to (1) the above-described slowing of the conveying speed and (2) the pressing from above the holding plate 45.
3, the laminated surface L is bent, and the laminated surface L can be bent more accurately. However, this invention is not limited to the surface of the conveyor 41 being a waveform.

(D) In the pressure drying process, the bending laminate 3 is moved to Z by the pressure dryer 51.
Press in the direction and dry. Thereby, the binder (adhesive) applied to the inorganic fibers is dried and the fibers are cured. The laminated surface L is 10 with respect to the XY plane.
The fiber of the bent laminate 3 is cured in a state where it is bent into a sawtooth shape or a sine curve shape at an angle of ˜45 degrees.
As the pressurization and drying means, publicly known ones can be used, and examples thereof include pressurization by a press, drying by blowing or heating.

(E) In the cutting step, the pressure-dried bent laminate 3 is the first cutter 6
1 is cut into a desired length (j) in the transport direction (X direction) to obtain a cut and bent laminate 4. Thus, by cutting in the transport direction (X direction), the cut and bent laminate 4 can be easily rotated in the rotation step (f) described later. Further, the width q of the heat insulating mat 6 is determined by cutting it into a desired length (j) (and the number of the rotationally bent laminated bodies 5 arranged in parallel in the width direction (Q direction)).
As the cutting apparatus and the cutting method, known ones can be used.
Moreover, it is needless to say that the ears (unnecessary portions at the ends in the width direction) of the bent laminate 3 may be cut as necessary.

(F) In the turning step, the cut and bent laminate 4 is transported in the horizontal plane (
By rotating 90 degrees about an axis extending in the direction (Y direction) orthogonal to the (X direction), the rotating / bending laminate 5 is obtained. In the cut and bent laminate 4, the inorganic fibers 1 extend in the horizontal direction (X direction or Y direction), and the laminated surface L of the inorganic fibers 1 also has a “sawtooth” shape, “substantially sine curve” shape, or “ ", But extends to the left and right in FIG. And by rotating 90 degrees of such a cutting | disconnection bending laminated body 4 as mentioned above, the inorganic fiber 1 is perpendicular | vertical direction (
Z direction) and the laminated surface L of the inorganic fibers also extends in the vertical direction (Z direction).
As the rotation method, a known method can be used.
In this way, the rotationally bent laminate 5 in which the laminate surface L is rotated by 90 degrees is obtained.
The heat insulating mat 6 shown in FIG.
It becomes. In addition, even if there is only one turning bending laminated body 5, it is possible to use it as a heat insulating mat, and the heat insulating mat of the present invention is not limited to one in which a plurality of turning bending laminated bodies are arranged in parallel.

Thereafter, if necessary, the outer surface of the heat insulating mat 6 (or the rotationally bent laminated body 5) is covered with a skin material by a known technique to form a heat insulating body. For example, as shown in FIG. 16, the outer surface of the heat insulating mat 6 is covered with an upper outer skin 8 and a lower outer skin 9 to form the heat insulating body 7. FIG. 16 shows a heat insulating material made from the heat insulating mat of FIG.
The same applies to the heat insulating material made from the heat insulating mats of 4 to 9.

<Second production method>
In the second manufacturing method, (c ′) the bending step, (e ′) the cutting step, and (f ′) the turning step are the same as the first manufacturing method (c) bending step, (e) cutting step, (f ) Except that it is different from the rotation process, it is the same as the first manufacturing method, and the heat insulating mat shown in FIG. 9 is manufactured. That is, according to a preferred embodiment, the second production method comprises: (a) the inorganic material is made the inorganic fiber 1 by the fiberizing step, (b) the inorganic fiber 1 is made the inorganic fiber laminate 2 by the deposition step, (C ′) The inorganic fiber laminate 2 is made into the bent laminate 103 by the bending step, and (d) the bent laminate 10 is made by the pressure drying step.
3 is pressed and dried, and (e ′) the bending and pressing body 103 pressed and dried by the cutting step is made to have a desired width (i) in the width direction (Y) perpendicular to the transport direction (X) in the horizontal plane. Cut into a cut and bent laminate 104, (f)
The cut and bent laminate 104 is rotated 90 degrees about the axis extending in the transport direction (X) as a central axis, and each of the cut and bent laminates 104 is used as the rotary bent laminate 105 to obtain the heat insulating mat 106.
The (a) fiberizing step and (b) deposition step of the second manufacturing method are the same as those of the first manufacturing method.

(C ′) Regarding the bending step, in the first manufacturing method, the inorganic fiber is bent in the X direction and the laminated surface L is inclined with respect to the XY plane, whereas the second manufacturing method is used. In the method, the laminated surface L is inclined with respect to the XY plane by bending the inorganic fibers in the Y direction. And Y
In order to bend the inorganic fibers in the direction, a compressive force is applied to the inorganic fiber laminate 2 in the Y direction.

In order to apply a compressive force to the inorganic fiber laminate 2 in the Y direction, the apparatus shown in FIGS. 6 and 7 is used in the second manufacturing method. FIG. 6 is a side view schematically showing an apparatus used in the second manufacturing method, and FIG. 7 is a plan view schematically showing an apparatus used in (c ′) the bending step. In FIG. 7, the inorganic fiber laminate 2
The bent laminate 103 and the third holding plate 145 are not shown.
In the apparatus, the conveyor 141, the second holding plate 143, and the third holding plate 145 are provided.
And are used. The conveyor 141 is continuously arranged on the transport conveyor 33.
The second holding plates 143 are disposed on both sides of the conveyor 141 in the Y direction, and are movable in the Y direction.
The third holding plate 145 is disposed above the conveyor 141 and is movable in the Z direction (movable up and down).

The inorganic fiber laminate 2 transported from the transport conveyor 33 is transported by the conveyor 141. At this time, the second holding plate 143 is moved toward the conveyor 141,
The inorganic fiber laminate 2 on the conveyor 141 is compressed in the Y direction. Moreover, the 3rd suppression board 145 is lowered | hung and the inorganic fiber laminated body 2 on the conveyor 141 is pressed to a Z direction. (1) compression by the second holding plate 143, and (2) the third holding plate 1
By pressing the inorganic fiber laminate 2 by 45, the inorganic fiber laminate 2
Is bent in the Y direction, and the laminated surface L is inclined in the Y direction, whereby the bent laminate 103 is formed. When the bent laminate 103 is viewed from the X direction, it has a laminated surface L, a sawtooth shape, a substantially sine curve shape, or a “<”-shaped cross section.
By adjusting the length (compression width) of the second corrugated conveyor 61 in the X direction (compression width), the compression time, and the conveying speed of the second corrugated conveyor 61, the flow operation (c ′)
A bending process can be performed.

Preferably, the surface of the conveyor 141 is corrugated, and is preferably uneven in a range of 10 to 45 degrees with respect to a direction (Y direction) orthogonal to the conveying direction of the conveyor. That is, preferably, the conveyor 141 is 1 in the Y direction.
It has the inclined surface 142 which inclines in the range of 0-45 degree | times. In other words, when the conveyor 141 is viewed from the X direction, the cross-sectional shape of the conveyor 141 is a waveform.
Thus, when the conveyor 141 has the inclined surface 142, the laminated surface L is bent also by the inclined surface 142, and the laminated surface L can be bent more accurately. However, the present invention is not limited to the surface of the conveyor 141 being corrugated.

The bent laminate 103 is subjected to (d) a pressure drying step by the same method as the first manufacturing method.
The pressure-dried bent laminate 103 is subjected to (e ′) cutting step, and as shown in FIGS. 8 and 6, the second cutter 163 uses the desired width (i) in the width direction (Y direction). To be cut and bent laminate 104. In other words, the Y-direction dimension of the bent laminate 103 is divided into, for example, four equal parts without changing the X-direction dimension and the Z-direction dimension. In the illustrated embodiment, the dimension in the Y direction is divided into four equal parts, but the present invention is not limited to dividing into four parts, and is not limited to dividing into equal parts.
(E ′) Prior to the cutting step, it is of course possible to cut the ears of the bent laminate 103 by a known method.

Each of the cut and bent laminates 104 is subjected to the (f ′) rotation process.
As an example of the rotation method, there is the method shown in FIG.
A rotation process is not limited to the method shown in FIG. 8, A well-known method can be used. FIG. 8 is a plan view schematically showing an apparatus used in the (e ′) cutting step and (f ′) rotating step of the second manufacturing method.
(E ′) The cut and bent laminate 104 obtained by the cutting step is formed by using the spacer 16
5, a space is provided between one cut-bending laminate 104 and the adjacent cut-bending laminate 104, whereby each cut-bending laminate 104 can be rotated.
Next, the cut and bent laminate 104 is sent to the torsional shape guide 166. Accordingly, each of the cut and bent laminates 104 is twisted as it advances by the conveyor, and the center of the cross section (YZ plane) of the cut and bent laminate 104 is the central axis (X
The axis extending in the direction) is rotated 90 degrees.
It becomes. In the illustrated embodiment, all the cut and bent laminates 104 are rotated 90 degrees, but only some of the cut and bent laminates 104 may be rotated 90 degrees.
By the aggregation machine 167, the rotating / bending laminate 1 adjacent to the rotating / bending laminate 105 is provided.
By making the space between 05 and zero, the heat insulating mat 106 is obtained. In the illustrated embodiment, the heat insulating mat 10 is composed of two rotating and bending laminated bodies 105.
Although 6 is shown, it is a matter of course that the heat insulating mat 106 composed of the four rotationally bent laminates 105 can be obtained by using the collecting machine.

<Third production method>
The heat insulating mat shown in FIG. 3 is manufactured by the third manufacturing method. 10-14
These show typically the method of manufacturing a heat insulating mat by the 3rd manufacturing method.
The third manufacturing method is the same as the second manufacturing method except that (c ″) the bending step is different from the (c ′) bending step of the second manufacturing method. , (A) fiberizing step, (b) deposition step, (c ″) bending step, (d) pressure drying step, (e ′) cutting step, and (f ′) rotating step. (A) “Inorganic fiber 1” is manufactured by the fiberizing step, (b) “Inorganic fiber laminate 2” is manufactured by the deposition step, and (c ”)“ Bending laminate 203 ”is manufactured by the bending step. ,
(D) The bending laminate 203 is pressure-dried by the pressure drying process, and (e ′) the bending laminate 203 pressed and dried by the cutting process is transported in the horizontal direction (
X) is cut to a desired width (i) in the width direction (Y) perpendicular to (X) to form a cut and bent laminate 204, and (f) the cutting and bending laminate 204 is moved in the transport direction (
The heat-insulating mat 206 is obtained by rotating 90 degrees about the axis extending in X) as the central axis and using each of the cut and bent laminates 204 as the turn and bent laminate 205.

The (a) fiberizing step and (b) deposition step of the third production method are the same as the first and second production methods, and (b) the inorganic material produced by the deposition step and conveyed by the conveyor. The fiber laminate 2 is subjected to a (c ″) bending process.
In the bending step (c ″) of the third manufacturing method, the laminated surface L is bent by inserting the hook 241 into the inorganic fiber laminated body 2. More specifically, the inorganic fiber laminated body 2 is provided with an inorganic material. By inserting and pulling the hanging needle 241 in the fiber laminating direction (Z direction), the laminating surface L of the hanging needle insertion portion and its peripheral portion is bent in the inserting direction.
The hanging needle 241 reciprocates in a direction (Z direction) perpendicular to the laminated surface L by a hanging needle driving device (not shown).
As shown in FIG. 11, the hanging needle 241 includes a shaft 243 and one or more projections 245 projecting in a direction orthogonal to the axial direction. Each protrusion 245 is formed so that the cross-sectional area becomes smaller toward the front end direction of the hanging needle, and includes a slope 247 and a rear surface 248. The rear surface 248 of the hanging needle 241 is preferably orthogonal to the shaft 247.

During the forward movement of the hanging needle 241, the hanging needle 241 is pushed into the inorganic fiber laminated body 2 by the inclined surface 247 of the protrusion 245, and one or more protrusions 245 penetrate the inorganic fiber laminated body 2. When the hanging needle 241 moves backward, the pressing of the rear surface 248 of the protrusion 245 causes the inorganic fibers constituting the inorganic fiber laminated body 2 to buckle, bends the laminated surface, and the laminated surface L is inclined with respect to the XY plane. A laminated body 203 (FIG. 12) is formed. In the illustrated embodiment, the hanging needles 241 are pushed in four places in the width direction of the inorganic fiber laminate 2, but the present invention is not limited to inserting the hanging needles in four places.
The inclination angle of the laminated surface L with respect to the XY plane depends on the return speed of the hanging needle 241 and the protrusion 2.
Since this depends on the cross-sectional area of 45, etc., when the inclination angle of the laminated surface L is 10 to 45 degrees, these are considered.

The bent laminate 203 is obtained by the same method as the first and second manufacturing methods (d)
It is subjected to a pressure drying process.
Prior to the above-described (c ″) bending step, (d) a pressure drying step may be performed. That is, (b) the inorganic fiber laminate 2 obtained by the deposition step is pressed and dried, The inorganic fiber laminate 2 that has been dried under pressure may be subjected to a bending process (c ″). (C
") By performing pressure drying prior to the bending step, the inorganic fibers are firmly bonded by the binder, and when the hanging needle 241 is inserted, the shape of the entire inorganic fiber laminate 2 is not destroyed. .

The pressure-dried bent laminate 203 is subjected to a cutting step (e ′) by the same method as the second manufacturing method to obtain a cut bent laminate 204. Thereafter, the cut and bent laminate 204 is subjected to a rotation step (f ′) by the same method as the second manufacturing method, and is rotated 90 degrees about the axis extending in the X direction (FIG. 14). It is set as the rotation bending laminated body 205, and the heat insulation mat 206 is obtained.

<Fourth manufacturing method>
The heat insulating mat shown in FIG. 4 is manufactured by the fourth manufacturing method. FIG. 15 is a side view schematically showing an apparatus used in the fourth manufacturing method.
In the fourth manufacturing method, (b ′) the stacking surface is bent in the deposition step, and (c) to (c ″) bending steps in the first to third manufacturing methods do not exist. In the (f ″) rotation step of the manufacturing method of (1), the cutting / bending laminate may be rotated about either the X axis or the Y axis as the central axis, and (e ″) in the cutting step Cutting of the bent laminate is determined.
That is, the fourth manufacturing method includes (a) a fiberizing step, (b ″) a deposition step, and (d
) Pressurized drying step, (e) Cutting step, (f) Rotating step, (a) Manufacturing “inorganic fiber 1” by fiberizing step, (b ″) Inorganic granular by depositing step Manufacturing a “bent inorganic fiber laminate 303” including a product, (d) pressure-drying the bent inorganic fiber laminate 303, and (e ″) pressing and drying the bent inorganic fiber laminate 303 in the conveying direction ( X) or cut to a desired length (j) or a desired width (i) in a direction (Y) perpendicular to the conveying direction (X) in the horizontal plane to obtain “cut-bending laminate 304”, (f ″) cut-bending The laminated body 304 is rotated by 90 degrees about the axis extending in the width direction (Y) orthogonal to the conveying direction (X) or the conveying direction (X) on the horizontal plane, and each of the cut and bent laminated bodies 304 is “ Rotating bending laminate 305
As a result, a heat insulating mat 306 is obtained.

The (a) fiberizing step of the fourth manufacturing method is the same as that of the first manufacturing method, and the inorganic fiber 1 is manufactured by the fiberizing apparatus 21.
(A) The inorganic fiber 1 manufactured in the fiberizing step falls from the fiberizing device 21 and is sprayed with an adhesive (binder) by the adhesive applying device 23 to fall and accumulate on the cotton collecting machine 31. An inorganic fiber is further deposited on the inorganic fiber 1 deposited on the cotton collecting machine 31 to form a laminated surface L, and an inorganic fiber laminated body is formed.

In the fourth manufacturing method, the laminated surface L is inclined by disposing the inorganic granular material 311 between such laminated surfaces (L, L).
As shown in FIG. 15, the granular material storage tank 313 storing the inorganic granular material 311.
The blower outlet 315 is disposed above the cotton collecting machine 31, and the inorganic granular material 311 falls on the inorganic fibers on the cotton collecting machine 31 from the blower outlet 315, and the laminated surface (L
, L).
FIG. 15 schematically shows the manufacturing apparatus, and only one fiberizing device 21 and one air outlet 315 are shown, but a plurality of fiberizing devices 21 and a plurality of air outlets are shown. If 315 is provided and the fiberizing device 21 and the air outlet 315 are alternately arranged in the X direction, the bent inorganic fiber laminated body 303 in which the inorganic granular material 311 is arranged between the laminated surfaces (L, L) is formed. The Since the inorganic granular material 311 is disposed between the laminated surfaces (L, L), the laminated surface L is inclined by the inorganic granular material 311. Moreover, since the laminated surface is inclined by the inorganic granular material 311, the inclined direction of the laminated surface L is random.

An inorganic granular material consists of the same material as the material of an inorganic fiber. When the inorganic fiber 1 is glass fiber, defibrated cotton (waste cotton) crushed from unnecessary glass wool
If this is used, resources will be reused.

In the fourth manufacturing method, (b ″) since the laminated surface L is inclined in the deposition step, there is no bending step (c) (c ′) (c ″) in the first to third manufacturing methods.
(B ′) The bent inorganic fiber laminate 303 formed in the deposition step is the first
It is attached | subjected to a (d) pressure drying process by the same method as the manufacturing method of -3.

The pressure-dried bent inorganic fiber laminate 303 is subjected to (e ″) a cutting step and then (f ″) a rotation step.
In the fourth manufacturing method, since the lamination surface L of the bent inorganic fiber laminate 302 is inclined in a random direction, (f ″) the rotation step may be performed with the axis extending in the Y direction as the central axis. , The axis extending in the X direction may be a central axis, that is, the (f ″) rotating step of the fourth manufacturing method may be the same as the (f) rotating step of the first manufacturing method, It may be the same as the (f ′) rotation step of the third manufacturing method.
When performing the rotation step (f ″) with the axis extending in the Y direction as the central axis, the (e ″) cutting step of the fourth manufacturing method is the same as the (e) cutting step of the first manufacturing method,
When performing the rotation step (f ″) with the axis extending in the X direction as the central axis, the (e ″) cutting step of the fourth manufacturing method is the same as the (e ′) cutting step of the second and third manufacturing methods. The same.
In addition, in FIG. 15, although both the 1st cutter 61 and the 2nd cutter 163 are shown, what is necessary is just to arrange | position any one.

Examples 1-4, Comparative Examples 1-2:
The first manufacturing method of the present invention ((a) fiberizing step, (b) deposition step, (c)
300 steps by bending process, (d) pressure drying process, and (e) cutting process).
A heat insulating mat made of glass wool of mm × 600 mm × 100 mm was manufactured. At this time, the inclination angle of the laminated surface with respect to the long side surface of the heat insulating mat was set to Table 1. The density of glass wool was 16 kg / m ³ .
The heat insulating performance and compressibility of these heat insulating mats were measured. The results are shown in Table 1. The best thermal insulation performance and stretchability are designated as “A +”, hereinafter “A”, “B +”.
, “B”, “C +”, “C”, “D” were evaluated in 7 stages.
Although Examples 1 and 4 are included in the invention of Claim 1, they are not included in the invention of Claim 2. From the viewpoint of Claim 2, these are comparative examples.

From these Examples and Comparative Examples, it can be seen that the laminated surface of the inorganic fibers has both heat insulating properties and compressibility by being inclined with respect to the long side surface of the heat insulating mat, and the inclination angle is 10 to 45 degrees. In this case, it was found that a heat insulating mat having both heat insulating properties and compressibility was obtained.

Examples 5-8, Comparative Examples 3-4:
The fourth production method of the present invention ((a) fiberizing step, (b ′) deposition step, (d
300mm x 600mm x 100mm by pressure drying process and (e) cutting process)
A heat insulating mat made of glass wool (density 16 kg / m ³ ) was produced. As the inorganic granular material, defibrated cotton (waste cotton) obtained by crushing unnecessary glass wool was used. At this time, the amount of defibrated cotton was as shown in Table 2 in terms of% by weight.
The heat insulating performance and compressibility of these heat insulating mats were measured. The results are shown in Table 2. The heat insulation performance and stretchability were evaluated by the same method as described above.
In addition, although Example 5 and Example 8 are included in the invention of Claim 4, they are not included in the invention of Claim 5, and from the viewpoint of Claim 5, these are comparative examples.

From these Examples and Comparative Examples, it can be seen that by including the inorganic particulate matter, both the heat insulating properties and the compressibility are provided, and the content is 10-80.
In the case of weight%, it has been found that a heat insulating mat having both heat insulating properties and compressibility can be obtained.

Example 9:
Third production method of the present invention ((a) fiberizing step, (b) deposition step, (c ″
3) by a bending process, (d) a pressure drying process, and (e) a cutting process).
A heat insulating mat made of glass wool (density 16 kg / m ³ ) having a size of 00 mm × 600 mm × 100 mm was manufactured, and its heat insulating property and compressibility were evaluated by the above-described evaluation method. As a result, the heat insulating property was C + and the compressibility was B. . That is, it has been found that the heat insulating mat having both heat insulating properties and compressibility can be obtained by the third manufacturing method of the present invention.

It is the perspective view which showed typically the 1st Example of the heat insulation mat of this invention. It is the expanded sectional view which showed typically the short side of the heat insulation mat of the modification of 1st Example. It is the perspective view which showed typically the 2nd Example of the heat insulation mat of this invention. The short side surface of 3rd Example of the heat insulation mat of this invention is shown typically. It is the side view which showed typically the apparatus used for the 1st manufacturing method of this invention. It is the side view which showed typically the apparatus used for the 2nd manufacturing method of this invention. It is the top view which showed typically the apparatus used for the bending process used in the 2nd manufacturing method of this invention. It is the top view which showed typically the apparatus used for the rotation process used in the 2nd-4th manufacturing method of this invention. It is the perspective view which showed typically the heat insulation mat manufactured by the 2nd manufacturing method of this invention. The (c ') bending process of the 3rd manufacturing method of this invention is typically shown. The hanging needle 126 used in the (c ′) bending step of the third manufacturing method is shown. It is the perspective view which showed typically the bending laminated body 103 manufactured by the (c ') bending process of the 3rd manufacturing method of this invention. It is the perspective view which showed typically the cutting | disconnection of the 3rd manufacturing method of this invention. It is the perspective view which showed typically the rotation process of the 3rd manufacturing method of this invention. It is the side view which showed typically the apparatus used in the 4th manufacturing method of this invention. It is the perspective view which showed typically the heat insulating material made from the heat insulating mat of FIG. It is the top view which showed the housing construction example by the wooden frame construction method of the heat insulation mat or heat insulating material manufactured by the method of this invention. It is the perspective view which showed the heat insulation mat of the prior art typically, Comprising: The PQR direction is shown. It is a typical side view explaining insertion of the heat insulation mat of FIG. 16 between construction members.

Explanation of symbols

1: inorganic fiber,
2: Inorganic fiber laminate,
3, 103, 203, 303: bent laminate,
4, 104, 204, 304: cut and bent laminate,
5, 105, 205, 305: rotationally bent laminates,
6, 106, 206, 306: heat insulating mat,
21: fiberizing device,
23: adhesive application device,
31: Cotton collecting machine
33: Conveyor,
41, 141: conveyor,
45: holding plate,
51: Pressure dryer
61: first cutter,
143: the second holding plate,
145: Third holding plate,
163: Second cutter,
241: A hanging needle,
311: inorganic particulate matter,
L: laminated surface,
P: the length direction of the heat insulating mat,
Q: The width direction of the heat insulating mat,
R: the thickness direction of the heat insulating mat,
S: inclined part,
X: Transport direction of the transport conveyor,
Y: width direction of the conveyor
Z: vertical direction in the deposition process,
p: length of heat insulating mat,
q: width of the heat insulating mat,
r: thickness of heat insulating mat

Claims (10)

A front surface (PQ) and a back surface (PQ) extending in the length direction (P) and the width direction (Q), a long side surface (PR) extending in the length direction (P) and the thickness direction (R), and a width direction ( Q
) And a short side surface (QR) extending in the thickness direction (R), and an inorganic heat insulating mat (6, 106, 206, 30) formed by laminating inorganic fibers (1) in the width direction (Q).
6)
At least a part of the laminated surface (L) of the inorganic fibers (1) is inclined with respect to the long side surface (PR) of the heat insulating mat,
Insulating mat made of inorganic fiber. The heat insulating mat made of inorganic fibers according to claim 1, wherein the laminated surface (L) of the inorganic fibers is inclined at 10 to 45 degrees with respect to the long side surface (PR) of the heat insulating mat. The heat insulating mat made of inorganic fibers according to claim 1 or 2, wherein the heat insulating mat (6, 106, 206, 306) is divided into two or more in the width direction (Q). The heat insulating mat made of inorganic fibers according to any one of claims 1, 2, and 3, wherein inorganic particles (311) are disposed between the laminated surfaces (L, L) of the inorganic fibers (1). The heat insulating mat made of inorganic fiber according to claim 4, wherein 10 to 80% by weight of the inorganic particulate matter (311) is arranged with respect to the total weight of the heat insulating mat (306). It is a manufacturing method of the inorganic fiber heat-insulating mat according to any one of claims 1, 2, and 3,
(A) a fiberizing step in which an inorganic substance is fiberized to form an inorganic fiber (1);
(B) Depositing the inorganic fibers (1) in the laminating direction (Z) to form an inorganic fiber laminate (
2) a deposition process;
(C) By compressing the inorganic fiber laminate (2) in the transport direction (X), the laminated surface (L) of the inorganic fibers is inclined with respect to the transport direction (X), so that the bent laminate (3 Bending process and
(D) a pressure drying step of pressurizing and drying the bent laminate (3);
(E) a cutting step of cutting the pressure-dried bent laminate (3) into a desired length (j) in the transport direction (X);
(F) Rotation of the bent laminate (3) cut to the desired length (j) by 90 degrees about the axis extending in the width direction (Y) perpendicular to the transport direction (X) on the horizontal plane Process,
A method for producing a heat insulating mat made of inorganic fibers. It is a manufacturing method of the inorganic fiber heat-insulating mat according to any one of claims 1, 2, and 3,
(A) a fiberizing step in which an inorganic substance is fiberized to form an inorganic fiber (1);
(B) Depositing the inorganic fibers (1) in the laminating direction (Z) to form an inorganic fiber laminate (
2) a deposition process;
(C ′) By compressing the inorganic fiber laminate (2) in the width direction (Y) perpendicular to the transport direction (X) in the horizontal plane, the laminated surface (L) of the inorganic fibers in the width direction (Y) A bending step that is inclined with respect to the bent laminate (103);
(D) a pressure drying step of pressurizing and drying the bent laminate (103);
(E ′) a cutting step of cutting the pressure-dried bent laminate (103) into a desired width (i) in the width direction (Y);
(F ′) a turning step of turning the cut and bent laminate (104) cut to the desired width (i) by 90 degrees about the axis extending in the transport direction (X);
A method for producing a heat insulating mat made of inorganic fibers. It is a manufacturing method of the inorganic fiber heat-insulating mat according to any one of claims 1, 2, and 3,
(A) a fiberizing step in which an inorganic substance is fiberized to form an inorganic fiber (1);
(B) Depositing the inorganic fibers (1) in the laminating direction (Z) to form an inorganic fiber laminate (
2) a deposition process;
(C ″) By inserting and pulling out the hanging needle (241) reciprocating in the laminating direction (Z) into the inorganic fiber laminate (2), the laminating surface of the hanging needle insertion portion and its peripheral portion is laminated in the laminating direction ( Bending step Z), inclining the laminated surface (L) of the inorganic fibers to form a bent laminate (203),
(D) a pressure drying step of pressing and drying the bent laminate (203);
(E ′) a cutting step of cutting the pressure-dried bent laminate (203) into a desired width (i) in the width direction (Y);
(F ′) a turning step of turning the cut and bent laminate (204) cut to the desired width (i) by 90 degrees about the axis extending in the transport direction (X);
A method for producing a heat insulating mat made of inorganic fibers. The manufacturing method of Claim 8 which pressurizes and dries the said inorganic fiber laminated body (2) prior to the said (c ") bending process. It is a manufacturing method of the inorganic fiber heat insulating mat of any one of claims 4 and 5,
(A) a fiberizing step in which an inorganic substance is fiberized to form an inorganic fiber (1);
(B ′) A deposition step of depositing inorganic particulates (311) together with the inorganic fibers (1) and inclining the laminated surface (L) of the inorganic fibers with the inorganic particulates (311) to form a bent laminate (303). When,
(D) a pressure drying step of pressurizing and drying the bent laminate (303);
(E ″) The pressure-dried bent laminate (303) is transferred to the desired length (j) in the transport direction (X) or in the width direction (Y) perpendicular to the transport direction (X) in the horizontal plane.
A cutting step of cutting to a desired width (i) in
(F ″) a cut and bent laminate (3) cut to a desired length (j) or a desired width (i)
04), a turning step of turning 90 degrees around an axis extending in the width direction (Y) or an axis extending in the transport direction (X),
A method for producing a heat insulating mat made of inorganic fibers.

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