JP2854847B2 - Insulating sound absorbing material of inorganic fiber coated with inorganic fiber and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin film-coated heat-absorbing and sound-absorbing material for inorganic fibers, which prevents discomfort of a user due to scattering of the inorganic fibers and a method for producing the same.

[0002]

2. Description of the Related Art Inorganic fiber mats made of inorganic fibers such as glass wool and rock wool are widely used as heat insulating and sound absorbing materials for buildings such as houses. This inorganic fiber insulation sound absorbing material, in order to prevent the inorganic fibers are scattered during handling to give a discomfort accompanied by tingling stimulus to the handler, and to provide the inorganic fiber mat with moisture resistance,
Generally, the front and back surfaces and both side surfaces along the long side direction of the inorganic fiber mat are covered with a skin material.

That is, the above-mentioned general inorganic fiber heat insulating and sound absorbing material supplies a surface material to each of the front and back surfaces of a continuously supplied inorganic fiber mat, and joins both sides of the surface material on the front and back surfaces to form an inorganic material. It is manufactured by covering the front and back surfaces and both side surfaces along the longitudinal direction of the fiber mat, and then cutting the fiber mat to a predetermined length.

[0004] However, in general, the heat-absorbing and sound-absorbing material for inorganic fibers manufactured by the above-described method is not covered with a skin material on the end surface cut to a predetermined length, that is, both side surfaces along the short side direction. The inorganic fiber mat is exposed. Therefore, discomfort due to scattering of the inorganic fibers from this portion was inevitable.

[0005] When an inorganic fiber heat-insulating and sound-absorbing material with an exposed inorganic fiber mat is used as a heat-insulating sound-absorbing material for a house wall or the like, when moisture enters the wall from the room to the outside of the room, the moisture becomes inorganic. There is a possibility that the fiber mat may enter the heat insulating sound absorbing material from the exposed portion and stay there, and may condense as the outside air temperature decreases. Due to this dew condensation, the heat insulation performance is deteriorated, and if the dew condensation lasts for a long period of time, the foundations, girders and the like of the house may be corroded.

To solve this problem, Japanese Patent Laid-Open No. 6-79849
In the publication, the inorganic fiber mat is cut to a predetermined length and supplied, and a thermoplastic resin sheet is supplied to the front and back surfaces thereof, and both sides in the longitudinal direction are thermally welded, and the inorganic fiber mat is provided between the inorganic fiber mats. Disclosed are those in which the entire surface of the inorganic fiber mat is covered with a thermoplastic resin sheet by cutting the front and back thermoplastic resin sheets partially by heat welding and cut, and the non-welded portion of the thermoplastic resin sheet has air holes. Have been.

[0007]

SUMMARY OF THE INVENTION
The inorganic fiber heat insulating and sound absorbing material of No. 6-79849 has the following problems because the thermoplastic resin sheets covering the inorganic fiber mat are heat-welded to each other.

First, since a thermoplastic resin sheet generally used as a skin material partially has a certain degree of thickness variation, it is necessary to perform welding under constant welding conditions such as temperature and pressure. In the part where the sheet is relatively thick, the welding is not sufficiently performed due to insufficient heating, and in the part where the sheet is relatively thin, the sheet is cut off before the sheet is welded due to excessive heating and pressurization. There was a problem that became unstable.

Further, since the thermal welding of the thermoplastic resin sheet between the inorganic fiber mats takes a certain amount of time, the movement of the thermoplastic resin sheet temporarily stops there, and as a result, the thermoplastic resin sheet However, there is a problem that the heat-welded state becomes unstable and the sheet becomes wrinkled as described above.

[0010] As described above, the welding is not sufficiently performed,
If the sheet is cut and not welded, the inorganic fiber inside will scatter from that part, giving the operator a tingling sensation.

Further, since it takes a certain amount of time for the thermal welding of the thermoplastic resin sheet, if the supply rate of the thermoplastic resin sheet is too high, the thermoplastic resin sheet is not welded, but it depends on the material and thickness of the thermoplastic resin sheet. For example, if it exceeds 35 m / min, heat welding is hindered. Accordingly, there is a limit to the speed of the production line for the heat insulating and sound absorbing material of inorganic fibers, and there is a problem that productivity is reduced.

Further, the heat welding of the thermoplastic resin sheets located on both sides along the short side direction of the inorganic fiber mat between the inorganic fiber mats is performed in a direction perpendicular to the supply direction of the thermoplastic resin sheet, ie, Since it is a direction orthogonal to the flow direction of the production line of the inorganic fiber heat-insulating material, the heat welding device needs to be installed in the flow of the inorganic fiber heat-insulation material in order to secure sufficient heating and pressurizing time for heat welding. There is also a problem that the robot must be moved in the direction following the fixed time, and a special device is required for that.

The present invention has been made in view of the above problems, and has as its object to provide a heat insulating sound absorbing material in which the entire surface of an inorganic fiber mat is covered with a synthetic resin film, and that the heat insulating sound absorbing material is formed of a synthetic resin film. An object of the present invention is to provide a manufacturing method capable of manufacturing with high productivity without causing poor adhesion or the like.

[0014]

Means for Solving the Problems To achieve the above object, a first aspect of the present invention is to cover the front and back surfaces of an inorganic fiber mat and both side surfaces along the long side direction with a synthetic resin film, The synthetic resin film on the side and the synthetic resin film on the back side are extended from both sides along the short side direction of the inorganic fiber mat and adhered,
Both side surfaces along the short side direction of the inorganic fiber mat are also covered with the synthetic resin film, and the inorganic fiber mat, the synthetic resin film, and the synthetic resin film are separated from each other by using an adhesive to form the inorganic fiber mat. A synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material, which is partially adhered in a short side direction of a mat and air is allowed to flow through unattached portions between the synthetic resin films. is there.

According to a second aspect of the present invention, in the first aspect, the inorganic fiber mat is covered with two synthetic resin films on a front side and a back side, and the two synthetic resin films are formed of the same. An object of the present invention is to provide a synthetic resin film-coated inorganic fiber heat insulating and sound absorbing material having both sides adhered along the long side direction of the inorganic fiber mat.

According to a third aspect of the present invention, in the first aspect, the inorganic fiber mat is covered with a single synthetic resin film so as to be wrapped in a cylindrical shape, and both sides of the single synthetic resin film are formed of the inorganic material mat. An object of the present invention is to provide a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber adhered along the long side direction of a fiber mat.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the synthetic resin film is intermittently adhered along a long side direction of the inorganic fiber mat.
An object of the present invention is to provide a synthetic resin film-covered inorganic fiber heat-insulating and sound-absorbing material in which air can flow in unbonded portions of the synthetic resin films.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the synthetic resin film is formed on both sides along the long side direction and the short side direction of the inorganic fiber mat. An object of the present invention is to provide a synthetic resin film-coated inorganic fiber heat insulating sound absorbing material extending from both side surfaces.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the length of the synthetic resin film extending from both sides along the long side direction of the inorganic fiber mat is 10%. An object of the present invention is to provide a synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material having a thickness of 100 mm.

According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the length of the synthetic resin film extending from both sides along the short side direction of the inorganic fiber mat is 10%. An object of the present invention is to provide a synthetic resin film-coated inorganic fiber heat insulating sound absorbing material having a thickness of up to 200 mm.

According to an eighth aspect of the present invention, there is provided the heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber according to any one of the first to seventh aspects, wherein the adhesive is a hot melt adhesive. .

According to a ninth aspect of the present invention, a binder mainly composed of a thermosetting resin is applied to the inorganic fibers and deposited, and the binder is heated and cured to form a mat shape, which is cut into a predetermined size to cut the inorganic fibers. A step of supplying the fiber mat at a predetermined interval, and bonding the two synthetic resin films to a part of at least one width direction of the two synthetic resin films continuously or intermittently in a longitudinal direction. A step of supplying the inorganic fiber mat so as to sandwich it from the front side and the back side thereof while applying the agent, and continuously connecting a part corresponding to the part of the inorganic fiber mat and the synthetic resin film to which the adhesive is applied, Pressing the inorganic fiber mat and the synthetic resin film, and bonding the synthetic resin film to each other, and between the inorganic fiber mat and the inorganic fiber mat. A step of pressing and adhering the synthetic resin films on the front side and the back side, and cutting the entire synthetic resin film at the same time, and cutting the synthetic resin film over the entire width. is there.

In a tenth aspect of the present invention, a binder mainly composed of a thermosetting resin is applied to inorganic fibers and deposited, and the binder is heated and cured to form a mat shape, and cut into predetermined dimensions to form an inorganic fiber. As a fiber mat, a step of supplying at a predetermined interval, and one synthetic resin film, while applying an adhesive continuously or intermittently in the longitudinal direction to a part of the width of the synthetic resin film, The step of supplying from the back side of the inorganic fiber mat, the step of folding the synthetic resin film in the width direction to cover the front and back surfaces of the inorganic fiber mat and both side surfaces along the long side direction, and the inorganic fiber mat and The synthetic resin film, by continuously pressing the portion corresponding to the portion where the adhesive has been applied,
The step of adhering the inorganic fiber mat and the synthetic resin film, and the synthetic resin film, between the inorganic fiber mat and the inorganic fiber mat, pressing the synthetic resin film on the front side and the back side, And a step of cutting over the entire width at the same time as the bonding.

According to the first synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material of the present invention, the front and back surfaces and both side surfaces along the long side direction of the inorganic fiber mat are covered with the synthetic resin film and the front surface side. The synthetic resin film and the synthetic resin film on the back side are extended from both side surfaces along the short side direction of the inorganic fiber mat and adhered, so that both side surfaces along the short side direction of the inorganic fiber mat are also synthesized. Since the entire surface of the inorganic fiber mat is covered with a synthetic resin film, the inorganic fibers do not directly touch the skin of the operator during handling, and the inorganic fibers are scattered. In addition, it is greatly reduced that the operator feels discomfort due to the tingling stimulus. Furthermore, when used as a heat insulating sound absorbing material for housing walls,
Even if moisture in the room enters the wall toward the outside, the moisture is prevented from entering the inside of the heat insulating and sound absorbing material. Therefore, dew condensation does not occur inside the heat insulating sound absorbing material,
The deterioration of the heat insulation performance and the occurrence of corrosion of the base and the girder are prevented.

Further, the inorganic fiber mat, the synthetic resin film, and the synthetic resin film are partially adhered to each other in the short side direction of the inorganic fiber mat using an adhesive,
Air is allowed to flow through the unbonded portions of the synthetic resin films, so that the inorganic fiber mat can be prevented from moving in the synthetic resin film, and the air required for compression during packing and restoration during construction Outflow and inflow of water are sufficiently performed.

According to the second aspect of the present invention, the inorganic fiber mat is covered with two synthetic resin films on the front side and the back side, and both sides of the two synthetic resin films extend along the long side direction of the inorganic fiber mat. Therefore, the synthetic resin film can be easily extended from both sides along the long side direction of the inorganic fiber mat.

According to the third aspect of the present invention, the structure of the synthetic resin film supply device is simplified by coating the inorganic fiber mat with one sheet of the synthetic resin film.
The product form can be changed.

According to the fourth aspect of the present invention, the synthetic resin film is intermittently adhered along the long side direction of the inorganic fiber mat, so that air can flow through the non-adhered portions between the synthetic resin films. As a result, the outflow and inflow of air required for compression during packing and restoration during construction are more sufficiently performed.

According to the fifth aspect of the present invention, the synthetic resin film extends from both sides along the long side direction and both sides along the short side direction of the inorganic fiber mat, that is, all four sides. Therefore, when used as a heat-insulating sound-absorbing material for a house wall, etc., all of the extended portions can be stapled to columns, studs, bases and girders, and only the conventional ears formed on two sides It can be fixed more firmly than the heat insulating and sound absorbing material that fixes. In addition, when all of the synthetic resin films extending from the four sides of the inorganic fiber mat are stapled, the space surrounded by the pillars, studs, the base, and the girder is entirely covered with the synthetic resin film, so that moisture is applied to this space. Intrusion can be effectively prevented, and dew condensation around columns and the like and inside the inorganic fiber mat can be prevented.

According to the sixth aspect of the present invention, the length of the synthetic resin film extending from both side surfaces along the long side direction of the inorganic fiber mat is 10 to 100 mm. The stapling is easy, and it is economically advantageous.

According to the seventh aspect of the present invention, the length of the synthetic resin film extending from both side surfaces along the short side direction of the inorganic fiber mat is 10 to 200 mm. It is easy to glue and cut, and it is easy to stap when it is applied as a heat insulating and sound absorbing material, and it is economically advantageous because it is too long for packaging and construction. .

According to the eighth aspect of the present invention, since a hot-melt adhesive is used as the adhesive, the inorganic fiber mat and the synthetic resin film, or the synthetic resin film,
It can be easily adhered in a short time.

According to the ninth and tenth aspects of the present invention, the inorganic fiber mat and the synthetic resin film, and the synthetic resin film are bonded to each other by using an adhesive. Thereby, the time required for bonding can be shorter than when bonding by heat welding,
As a result, the speed of the production line can be increased to about 60 to 100 m / min. In addition, the bonding and cutting of the synthetic resin film in the direction orthogonal to the flow of the production line, that is, both sides along the short side direction of the inorganic fiber mat can be performed in a short time of 0.1 second or less. There is no need for a special device for moving the cutting device following the flow direction of the production line for a certain period of time. Therefore, the synthetic resin film-coated inorganic fiber heat insulating sound absorbing material can be manufactured with high productivity without causing poor adhesion of the synthetic resin film.

[0034]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the inorganic fiber is not particularly limited, and glass wool, rock wool, etc., which are used for ordinary inorganic fiber heat insulating and sound absorbing materials, can be used.

The inorganic fiber mat is not particularly limited either, and is usually used for a heat insulating and sound absorbing material of ordinary inorganic fibers, that is, a binder mainly composed of a thermosetting resin is applied to inorganic fibers and deposited. A material obtained by heating and curing a binder to form a mat can be used. In addition, the density of the inorganic fiber mat may be set to a level that is used for a usual heat insulating and sound absorbing material of inorganic fiber, and is preferably, for example, about 5 to 100 kg / m ³ .

In the present invention, as the synthetic resin film, those used for coating ordinary inorganic fiber heat insulating and sound absorbing materials can be used. For example, thermoplastic resin such as polyethylene, polyvinyl chloride, polyvinylidene chloride, polyester and polycarbonate can be used. It is preferable to use a film, a laminate thereof, a material obtained by evaporating a metal such as aluminum, a material obtained by laminating a different kind of synthetic resin film, an aluminum foil, or the like, among which a high-density polyethylene film is more preferable.

The thickness of the synthetic resin film is 10 to 50.
μm is preferable, and 15 to 30 μm is more preferable. When the thickness of the synthetic resin film is less than 10 μm, the tear strength is insufficient, and when it exceeds 50 μm, the weight becomes too heavy, which is not preferable.

The synthetic resin film covering the surface of the inorganic fiber mat is provided with a material for facilitating the outflow and inflow of air necessary for the compression of the inorganic fiber heat-insulating and sound-absorbing material at the time of packing and the restoration at the time of construction. It is preferable to provide a large number of small holes having a diameter of about 1 to 5 mm in order to release moisture inside by ventilation.

The synthetic resin film may be covered with one sheet or two sheets as long as the whole surface of the inorganic fiber mat can be covered.

In the present invention, the adhesive may be any as long as it can bond the synthetic resin film to be used. Examples thereof include hot melt adhesives such as ethylene-vinyl acetate copolymer resin and rubbers such as chloroprene rubber and styrene-butadiene rubber. It is preferable to use a glue, an acrylic resin, a water-soluble adhesive such as polyvinyl alcohol, an acrylic resin, an emulsion-based adhesive such as polyvinyl alcohol, etc., but since the time required for bonding is short, an adhesive hot-melt adhesive is used. Is more preferred.

The method of applying the adhesive to the synthetic resin film is not particularly limited as long as it can be applied uniformly. For example, a method using a spray, a method using a roll coater, and the like can be adopted. When applying, a method using a spray such as an air atomizing method, a spiral spray method, a wide spray method is preferable,
The wide spray method is particularly preferable because it is easy to keep the coating width constant. In order to apply the adhesive intermittently by using a spray, an electromagnetic valve or the like is provided at the adhesive discharge port of the spray device, and the valve is controlled so as to be opened and closed at predetermined intervals. The agent may be discharged intermittently.

In the present invention, one or two synthetic resin films are used to cover the front and back surfaces of the inorganic fiber mat and both side surfaces along the long side direction, and to cover the inorganic fiber mat along the short side direction. The synthetic resin film is extended from both side surfaces (both end surfaces), and both side surfaces along the short side direction of the inorganic fiber mat are covered with the synthetic resin film. After covering the inorganic fiber mat with the synthetic resin film, the overlapping portion of the synthetic resin film, that is, the edge along the long side direction of the synthetic resin film, and the edge along the short side direction of the synthetic resin film. After bonding, the inorganic fiber mat is completely covered with the synthetic resin film. In this case, in the present invention, an unbonded portion is left in the bonded portion between the synthetic resin films to assist the outflow and inflow of air during compression during packing and restoration during construction.

The unbonded portions between the synthetic resin films are as follows:
By applying an adhesive to a part of the width direction of the synthetic resin film, it is possible to form a portion where the synthetic resin film overlaps along the short side direction of the inorganic fiber mat,
Further, by applying the adhesive intermittently along the length direction of the synthetic resin film, it is possible to form the portion where the synthetic resin films overlap along the long side direction of the inorganic fiber mat.

At the same time as the bonding between the synthetic resin films, the inorganic fiber mat and the synthetic resin film are also partially bonded using an adhesive so that the inorganic fiber mat does not move in the synthetic resin film. The application position should be on the front and / or back surface of the inorganic fiber mat, along the longitudinal direction, at a portion adjacent to the bonding position between the synthetic resin films, at a substantially central portion in the short side direction of the inorganic fiber mat, and the like. preferable. Further, the width of the adhesive applied is preferably about 1/5 to 1/2 of the width of the inorganic fiber heat-insulating and sound-absorbing material. It is preferred that

[0045] In the above, the coating amount of the adhesive per unit area is preferably ^{1~10g / m 2, 1~5g / m} 2 is more preferable.

Further, when the entire surface of the inorganic fiber mat is covered with the synthetic resin film and the inorganic fiber mat and the synthetic resin film and the synthetic resin film are adhered to each other with the adhesive as described above, the synthetic resin film becomes inorganic fiber mat. It is preferable that the mats extend from both sides along the long side direction and both sides along the short side direction in an ear shape (flange shape). By stapling all of this extension to the pillar, stud, base and girder, it can be firmly fixed compared to the conventional case where only the ears formed on the two sides are fixed, The space surrounded by the studs, the base, and the girder is completely covered with the synthetic resin film, and it is possible to effectively prevent moisture from entering this space, and to prevent dew condensation around the pillars and the inorganic fiber mat. be able to.

The length of extending the synthetic resin film from both sides along the short side direction of the inorganic fiber mat is 10 to 20.
0 mm is preferable, and 70 to 170 mm is more preferable. When the extension length of the synthetic resin film is less than 10 mm, it is not preferable because, in the manufacturing process, it is difficult to adhere and cut by the press-cutting device, and it becomes difficult to staple the heat-insulating sound absorbing material during construction. . Further, when the extension length of the synthetic resin film exceeds 200 mm, it may become an obstacle when packaging and installing the heat insulating sound absorbing material, and the required length of the synthetic resin film increases, so that it is economical. Be disadvantaged.

The length of extending the synthetic resin film from both sides along the long side direction of the inorganic fiber mat is as follows:
It is preferably from 10 to 100 mm, more preferably from 20 to 50 mm. If the extension length of the synthetic resin film is less than 10 mm, it is difficult to staple the insulation sound-absorbing material, and if it exceeds 100 mm, a wide synthetic resin film is required, which is economical. It is not preferable because it is disadvantageous.

Next, a preferred example of the present invention will be described with reference to the drawings. The method of coating the inorganic fiber mat with the synthetic resin film, the bonding position, and the like are not limited to the following examples.

FIGS. 11 and 12 show an example of an apparatus for producing the heat insulating sound-absorbing material of the present invention coated with a synthetic resin film.

First, in a manufacturing process (not shown), a binder containing a thermosetting resin as a main component is applied to inorganic fibers and deposited, and the binder is heated and cured to form a mat and cut into a predetermined length. Thereby, the inorganic fiber mat 12 is manufactured. This inorganic fiber mat 12 is shown in FIG.
1 and is conveyed on the conveyor 65a at a predetermined interval.

A front side synthetic resin film 13 and a back side synthetic resin film 14 for covering the inorganic fiber mat 12 are supplied between the conveyor 65a and the adjacent conveyor 65b. . The front-side synthetic resin film 13 is supplied in a belt shape from a roll 61, and a plurality of wrapped rolls 62 (only four rolls are shown on one side for convenience in FIG. 11; And the press roll 63 cover the surface of the inorganic fiber mat 12, both side surfaces along the long side direction, and further, both side portions along the long side direction on the back surface.

Further, the adhesive 15 is intermittently applied to both sides of the back side synthetic resin film 14 with a predetermined width by a spray gun 64, and is brought into contact with the lower surface of the inorganic fiber mat 12 so as to be in contact with the conveyor 65b. Inorganic fiber mat 12
Inserted between The spray gun 64 is supplied with adhesive and air by a supply device (not shown). The width of the back side synthetic resin film 14 is set to a length that extends a predetermined length from both sides along the long side direction of the inorganic fiber mat 12, and the application position of the adhesive is determined by the extending portion. Is inside.

Thus, the front and back surfaces of the synthetic resin film 1
The inorganic fiber mat 12 covered with 3, 14 is conveyed on a conveyor 65b, pressed on the conveyor 65b by pressing rolls 66, 67, and attached to the adhesive 15 of the back side synthetic resin film 14 and the front side synthetic resin. Film 13
And the back surface of the inorganic fiber mat 12 are bonded to each other.

A press cutting device 70 is arranged between the conveyor 65b and the conveyor 65c adjacent thereto. As shown in FIG. 12, the pressing and cutting device 70 has a cutting blade 68 disposed orthogonally to the transport line, and a pair of pressing plates 69 disposed on both sides thereof. It moves up and down. In addition, a pair of receiving plates 74 are arranged below the pair of pressing plates 69.

Then, the synthetic resin films 13 on the front and back surfaces,
When the portion between the inorganic fiber mats 12 covered with 14 reaches below the pressing / cutting device 70, the pressing / cutting device 70 is lowered by driving means (not shown), and the synthetic resin films 13 and 14 are cut by the cutting blade 68. Are cut over the entire width in the width direction, and portions of the synthetic resin films 13 and 14 on the front and back surfaces extending from both side surfaces (end surfaces located in the length direction) of the inorganic fiber mat 12 in the short side direction. ,
It is sandwiched and adhered between the pressing plate 69 and the receiving plate 74.

FIGS. 1 and 2 show the thus-obtained synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material according to one embodiment of the present invention. In the synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material 11, the inorganic fiber mat 12 is made of a front-side synthetic resin film 13 and a back-side synthetic resin film 1.
4.

The front side synthetic resin film 13 is formed by folding back both sides along the longitudinal direction into a U-shape to form the surface 12a of the inorganic fiber mat 12 and the side surfaces 12a along the long side direction.
b and both sides except the center of the back surface 12d. Then, the portion of the front side synthetic resin film 13 that is folded back on the lower surface of the inorganic fiber mat 12, and both sides of the lower surface of the inorganic fiber mat 12 adjacent thereto are bonded by the adhesive 15 applied to the back side synthetic resin film 14, It is adhered to the back side synthetic resin film 14. In this case, since the adhesive 15 is applied intermittently along the transport line, an unbonded portion 16b is formed. Then, both side edges along the longitudinal direction of the back side synthetic resin film 14 extend from both side surfaces 12b along the long side direction of the inorganic fiber mat 12 to form ears.

Further, the longitudinal ends of the front side synthetic resin film 13 extend from both side surfaces 12 c along the short side direction of the inorganic fiber mat 12. Is bonded to the portion extending from both side surfaces 12c along the short side direction of the inorganic fiber mat 12 by an adhesive agent 15, whereby both side surfaces 12c along the short side direction of the inorganic fiber mat 12 are also provided. It is covered with synthetic resin films 13 and 14. in this case,
Since the adhesive 15 is applied to both sides of the back side synthetic resin film 14, an unbonded portion 16a is formed.

Therefore, the inorganic fiber mat 12 has front and back surfaces 12a and 12d, and both side surfaces 12b along the long side direction.
The entire surfaces of both side surfaces 12c along the short side direction are covered with synthetic resin films 13 and 14, and unbonded portions 16a and 16b are formed at the connecting portions of the synthetic resin films 13 and 14 on the front and back surfaces. Outflow and inflow of air from the bonding portions 16a and 16b are enabled.

FIG. 13 shows another example of an apparatus for producing a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention. The same parts as those shown in FIGS. 11 and 12 are denoted by the same reference numerals, and description thereof will be omitted.

In this apparatus, too, the conveyors 65a and 6
5b, the front side synthetic resin film 13 and the back side synthetic resin film 14 are supplied so as to cover the front and back of the inorganic fiber mat 12. However, in this embodiment,
The front side synthetic resin film 13 covers the surface of the inorganic fiber mat 12 by the bending device 71, covers both side surfaces along the long side direction, and further extends in a flange shape from both side surfaces along the long side direction. Be bent to make.

The back side synthetic resin film 14 has
The adhesive 15 is intermittently applied to both side edges along the longitudinal direction. Then, on the conveyor 65b, both side edges of the front side synthetic resin film 13 extending in the above-mentioned flange shape are formed by the pair of pressing rollers 66a arranged on both sides of the conveyor 65b. The portion of the front side synthetic resin film 13 that covers the surface of the inorganic fiber mat 12 while being pressed against both side edges is pressed by another pressing roller 67 disposed over the entire width of the conveyor 65b. . The adhesive 15
The application width is such that both side edges of the front side synthetic resin film 13 extending in a flange shape and both sides of the lower surface of the inorganic fiber mat 12 can be bonded to the back side synthetic resin film 14.

In this manner, both side edges of the front side synthetic resin film 13 and the back side synthetic resin film 14 and both sides of the back side synthetic resin film 14 and the lower surface of the inorganic fiber mat 12 are bonded with the adhesive 15. The front side synthetic resin film 13 and the back side synthetic resin film 14 are pressed and bonded between the inorganic fiber mats 12 by the same pressing and cutting device 70 as shown in FIG. I do.

FIGS. 3 and 4 show another embodiment of the heat insulating sound-absorbing material coated with a synthetic resin film of the present invention thus obtained. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.

The synthetic resin film-coated inorganic fiber heat insulating and sound absorbing material 21 has an inorganic fiber mat 12 covered with a front side synthetic resin film 13 and a back side synthetic resin film 14. The front side synthetic resin film 13 covers the surface 12a of the inorganic fiber mat 12 and both side surfaces 12b along the long side direction, and further extends outward from the both side surfaces 12b in a flange shape of a predetermined length. Then, both sides of the lower surface 12 d of the inorganic fiber mat 12 and the lower surface of the flange-like extending portion of the front-side synthetic resin film 13 are bonded by the adhesive 15 to the back-side synthetic resin film 1.
4 is adhered. In this case, since the adhesive 15 is intermittently applied in the length direction, an unbonded portion 16b is formed.

The portions of the front side synthetic resin film 13 extending from both side surfaces 12c along the short side direction of the inorganic fiber mat 12 correspond to the portions of the back side synthetic resin film 14 extending from the same side surfaces 12c. Pressed, adhesive 1
5 are adhered. In this case, since the adhesive 15 is applied only to both sides in the width direction of the back side synthetic resin film 14, an unbonded portion 16a is formed.

Thus, all the surfaces of the inorganic fiber mat 12 are covered with the front side synthetic resin film 13 or the back side synthetic resin film 14 and the unbonded portions 16
Outflow and inflow of air are enabled by a and 16b.

FIGS. 5 and 6 show still another embodiment of the heat insulating sound absorbing material of the present invention.

In the synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material 31, the inorganic fiber mat 12 is formed by the front-side synthetic resin film 13 and the back-side synthetic resin film 14 as shown in FIGS. It is covered in the same manner as the inorganic fiber heat insulating and sound absorbing material 21. Then, the extension of the front side synthetic resin film 13 from both side surfaces 12b along the long side direction of the inorganic fiber mat 12 and the back side synthetic resin film 14 at the corresponding position are the adhesive 1
5, the non-adhered portion 16b is formed. Also, the back surface 12d of the inorganic fiber mat 12
And the back side synthetic resin film 14 are continuously adhered along the long side direction with a predetermined width by an adhesive 15 to form non-adhered portions 16c, 16c.

The synthetic resin film-covered inorganic heat insulating and sound absorbing material 31 was prepared by using the apparatus shown in FIG.
The application of No. 5 is performed at three places, namely, on both sides and substantially at the center of the back side synthetic resin film 14, and the application at substantially the center is performed continuously along the flow direction of the line.

FIG. 14 shows still another example of an apparatus for producing the heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention. It is to be noted that substantially the same parts as those of the apparatus shown in FIGS. 11 and 12 are denoted by the same reference numerals, and description thereof will be omitted.

In this device, one synthetic resin film 17 is supplied from the back side of the inorganic fiber mat 12 between the conveyors 65a and 65b. The adhesive 15 is continuously applied in the line direction to the central portion in the width direction and one side portion in the width direction of the synthetic resin film 17.

The synthetic resin film 17 is wrapped on both sides by the wrapping device 72.
Is bent upward so as to cover both side surfaces along the long side direction, and further bent so as to cover the upper surface of the inorganic fiber mat 12, and both end portions are overlapped on the upper surface of the inorganic fiber mat 12. The wrapping device 72 has a shape in which the feeding side of the synthetic resin film 17 is spread in a trumpet shape, and the feeding side is narrowed so as to conform to the outer peripheral shape of the inorganic fiber mat 12.

The inorganic fiber mat 12 covered with the synthetic resin film 17 is pressed from above by the pressing rolls 66 and 67 while moving on the conveyor 65b, and the overlapping side edges of the synthetic resin film 17 are overlapped. The parts and the central part of the lower surface of the inorganic fiber mat 12 and the synthetic resin film 17 are adhered by the adhesive 15.

Further, the pressing and cutting device 70 similar to that shown in FIG.
The portions of the synthetic resin film 17 extending from both sides along the short side direction of the inorganic fiber mat 12 are pressed up and down to adhere and cut over the entire width.

FIGS. 7 and 8 show still another embodiment of the heat insulating sound-absorbing material of the present invention thus obtained.

The synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material 41 has a back surface 12d, both side surfaces 12b along the long side direction, and a front surface 12a of the inorganic fiber mat 12 formed of a single synthetic resin film 17 into a cylindrical shape. Covered to wrap,
At approximately the center in the short side direction of the surface 12 a of the inorganic fiber mat 12, both side edges along the length direction of the synthetic resin film 17 overlap, and the overlap portion is formed on one side edge of the synthetic resin film 17. It is adhered by the applied adhesive 15.

Further, both edge portions located in the length direction of the synthetic resin film 17 extend from both side surfaces 12 c along the short side direction of the inorganic fiber mat 12, and are flattened in the direction of the rear surface 12 d of the inorganic fiber mat 12. The adhesive 1 applied to substantially the center in the width direction of the synthetic resin film 17
5 are adhered. In addition, the inorganic fiber mat 12
The central portion of the back surface 12 is also bonded to the synthetic resin film 17 with the adhesive 15. In addition, the unbonded portion 1 is provided at both ends located in the length direction of the synthetic resin film 17.
6d and 16e are formed to enable the inflow and outflow of air.

FIGS. 9 and 10 show still another example of the heat insulating sound-absorbing material of the present invention.

In the synthetic resin film-coated inorganic fiber heat-insulating and sound-absorbing material 51, the inorganic fiber mat 12 is covered with a single synthetic resin film 17 so as to be wrapped in a cylindrical shape, and both sides along the length direction of the synthetic resin film 17. The edge is extended from one of the side surfaces 12 b along the long side direction of the inorganic fiber mat 12 and overlapped, and the overlapping portion is intermittently adhered in the length direction by the adhesive 15. An unbonded portion 16b is formed between the portions.

The adhesive 15 is applied so as to cover one side edge of the back surface 12 d of the inorganic fiber mat 12.
One side edge of 2 d is also adhered to the synthetic resin film 17.

Further, both end portions located in the length direction of the synthetic resin film 17 extend from both side surfaces 12c along the short side direction of the inorganic fiber mat 12, and are flattened in the direction of the back surface 12d of the inorganic fiber mat 12. And bonded by the adhesive 15. In addition, the synthetic resin film 1
7, the unadhered portion 16
f is formed, and the unbonded portion 16b along the length direction is formed.
In addition, the inflow and outflow of air are enabled.

[0084]

EXAMPLE Using the apparatus shown in FIGS. 11 and 12, a synthetic resin film-coated inorganic fiber heat insulating and sound absorbing material of the present invention was manufactured.

The inorganic fiber mat 12 has a width of 430 mm.
A glass wool mat having a length of 1370 mm, a thickness of 50 mm, and a density of 10 kg / m ³ was used. As the front-side synthetic resin film 13, a high-density polyethylene film having a width of 660 mm and a thickness of 20 μm was used. Then, both sides along the longitudinal direction of the front-side synthetic resin film 13 were bent by the wrapping roll 62 to cover the surface of the inorganic fiber mat 12, both sides along the long side direction, and both sides of the back surface. . The folded width of both side edges along the longitudinal direction of the front side synthetic resin film 13 to the back side of the inorganic fiber mat 12 was 65 mm.

On the other hand, a high-density polyethylene film having a width of 490 mm and a thickness of 20 μm was used as the back side synthetic resin film 14, and 30 mm inward from both ends along the longitudinal direction.
The hot melt adhesive is applied to the part by a wide spray at an application amount per unit area of 1 g / m ² and a width of 150 mm.
It was applied intermittently along the longitudinal direction. After the back side synthetic resin film 14 was brought into contact with the back side of the inorganic fiber mat 12 covered with the front side synthetic resin film 13, the back side synthetic resin film 14 was pressed by the pressing rolls 66 and 67 on the conveyor 65b.

Then, the front side synthetic resin film 13 and the back side synthetic resin film 14 are pressed and bonded between the inorganic fiber mats 12 by the pressing and cutting device 70 shown in FIG. The section was cut over the entire width. Thus, a synthetic resin film-coated inorganic fiber heat insulating sound absorbing material 11 as shown in FIGS. 1 and 2 was obtained.

In this heat insulating and sound absorbing material, both side edges along the longitudinal direction of the back side synthetic resin film 14 extend from both side surfaces 12b along the long side direction of the inorganic fiber mat 12 to form ears. The width of this ear was 30 mm. Adhesive 15
Is applied with a width of 150 mm to the inside of the ear portion, whereby both sides of the front-side synthetic resin film 13 and both sides of the inorganic fiber mat 12 are adhered to the back-side synthetic resin film 14. . In addition, both ends in the length direction of the synthetic resin films 13 and 14 on the front and back surfaces, that is, portions extending from both side surfaces 12c along the short side direction of the inorganic fiber mat 12 have an extension length of 125 mm. It is pressed flat and adhered, and a non-adhered portion 16a having a width of 130 mm is provided at the center thereof. Unbonded portions 16b are also formed on both side edges along the length direction of the synthetic resin films 13 and 14 on the front and back surfaces.

The production line speed of the synthetic resin film-coated inorganic fiber heat insulating and sound absorbing material was 60 m / min, but there was no problem such as poor adhesion of the synthetic resin film. Further, at the time of compression at the time of packing, and at the time of restoration at the time of construction, the outflow and inflow of air were favorably performed, so that compression and restoration could be easily performed.

[0090]

As described above, according to the heat insulating sound-absorbing material of the present invention, the entire surface of the inorganic fiber mat is covered with the skin material made of the synthetic resin film. Since the fiber mat and the synthetic resin film, and the synthetic resin film are required to be partially adhered to each other, there is no scattering of inorganic fibers during handling, and when installed on the wall of a house, etc. Can prevent moisture from entering the
Furthermore, adhesion failure due to variations in the thickness of the skin material and variations in the tension during supply is less likely to occur, and the speed of the production line can be increased as compared with the method of welding a synthetic resin film. Since there is no need to provide a special device for moving the robot, the productivity is excellent.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing one embodiment of a synthetic resin film-coated inorganic fiber heat insulating sound absorbing material of the present invention.

FIG. 2 is a sectional view of the heat insulating and sound absorbing material of the embodiment.

FIG. 3 is a partial perspective view showing another embodiment of the heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 4 is a cross-sectional view of the heat-insulating sound absorbing material of the embodiment.

FIG. 5 is a partial perspective view showing still another embodiment of a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 6 is a sectional view of the heat insulating and sound absorbing material of the embodiment.

FIG. 7 is a partial perspective view showing still another embodiment of a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 8 is a cross-sectional view of the heat insulating and sound absorbing material of the same embodiment.

FIG. 9 is a partial perspective view showing still another embodiment of the heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 10 is a sectional view of the sound-absorbing heat insulating material of the embodiment.

FIG. 11 is a schematic perspective view showing an example of an apparatus for producing a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 12 is a schematic perspective view showing a pressing and cutting portion in the same device.

FIG. 13 is a schematic perspective view showing a part of another example of an apparatus for producing a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

FIG. 14 is a schematic perspective view showing a part of still another example of an apparatus for producing a heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber of the present invention.

[Explanation of symbols]

11, 21, 31, 41, 51 Insulating sound absorbing material of inorganic fiber covered with synthetic resin film 12 Inorganic fiber mat 13 Front side synthetic resin film 14 Back side synthetic resin film 15 Adhesive 16a, 16b, 16c, 16d, 16e, 16f Not adhered Part 62 Envelope roll 64 Spray gun 66, 66a, 67 for applying adhesive Adhesive roll 68 Cutting blade 69 Press plate 70 Press cutting device 71 Bending device 72 Envelope device

Continuation of front page (56) References JP-A-6-79849 (JP, A) JP-A-52-135383 (JP, A) JP-A-56-161151 (JP, A) Jiko 63-26489 (JP) , Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) B32B 1/00-35/00 E04B 1/74-1/98

Claims (10)

(57) [Claims] 1. A front and back surface and a both side surface along a long side direction of an inorganic fiber mat are covered with a synthetic resin film, and the synthetic resin film on the front side and the synthetic resin film on the back side are formed of the inorganic fiber. By extending and bonding from both side surfaces along the short side direction of the mat, both side surfaces along the short side direction of the inorganic fiber mat are also covered with the synthetic resin film, and the inorganic fiber mat and The synthetic resin film, and the synthetic resin films are partially adhered to each other in the short side direction of the inorganic fiber mat using an adhesive, and air can be circulated in a non-adhered portion between the synthetic resin films. A heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber, characterized in that: 2. The inorganic fiber mat is covered with two synthetic resin films on a front surface side and a back surface side, and the two synthetic resin films have both sides along a long side direction of the inorganic fiber mat. The heat-absorbing and sound-absorbing material for an inorganic fiber coated with a synthetic resin film according to claim 1, which is bonded by bonding. 3. The inorganic fiber mat is covered with one synthetic resin film so as to be wrapped in a cylindrical shape, and both sides of the one synthetic resin film are adhered along a long side direction of the inorganic fiber mat. The heat insulating and sound absorbing material of a synthetic resin film-coated inorganic fiber according to claim 1. 4. The synthetic resin film is adhered intermittently along a long side direction of the inorganic fiber mat, and air can flow through unsynthesized portions between the synthetic resin films. 4. The heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber according to any one of the above-mentioned items. 5. The method according to claim 1, wherein the synthetic resin film extends from both side surfaces along a long side direction and both side surfaces along a short side direction of the inorganic fiber mat. A heat insulating sound-absorbing material of the above-mentioned synthetic resin film-coated inorganic fiber. 6. The synthetic resin film has a length of 10 extending from both side surfaces along a long side direction of the inorganic fiber mat.
The heat-absorbing and sound-absorbing material for inorganic fibers coated with a synthetic resin film according to any one of claims 1 to 5, which has a thickness of from 100 to 100 mm. 7. A length of the synthetic resin film extending from both side surfaces along a short side direction of the inorganic fiber mat is 10 or less.
The heat insulating sound-absorbing material for a synthetic resin film-coated inorganic fiber according to any one of claims 1 to 6, which has a thickness of from 200 to 200 mm. 8. The heat insulating and sound absorbing material according to claim 1, wherein the adhesive is a hot melt adhesive. 9. A binder mainly composed of a thermosetting resin is applied to inorganic fibers and deposited, and the binder is heated and cured to form a mat shape, cut into predetermined dimensions to obtain an inorganic fiber mat, and A step of supplying at an interval, and applying the adhesive continuously or intermittently in the longitudinal direction to the two synthetic resin films on at least a part of the width direction of at least one of the two synthetic resin films. A step of supplying the inorganic fiber mat so as to sandwich it from the front side and the back side; and continuously pressing a portion of the inorganic fiber mat and the synthetic resin film corresponding to the portion where the adhesive is applied. Bonding the inorganic fiber mat and the synthetic resin film, and the synthetic resin film to each other; and between the inorganic fiber mat and the inorganic fiber mat, the surface side And a step of pressing and bonding the synthetic resin film on the rear surface side and cutting the synthetic resin film over the entire width at the same time. 10. A binder containing a thermosetting resin as a main component is applied to inorganic fibers and deposited, and the binder is heated and cured to form a mat, and cut into predetermined dimensions to obtain an inorganic fiber mat. A step of supplying the synthetic fiber film at intervals, while applying an adhesive continuously or intermittently in the longitudinal direction to a part of the width of the synthetic resin film, A step of supplying from the back side, a step of folding the synthetic resin film in the width direction to cover the front and back surfaces of the inorganic fiber mat and both side surfaces along the long side direction, and a step of covering the inorganic fiber mat and the synthetic resin film. A part corresponding to the part where the adhesive was applied is continuously pressed to bond the inorganic fiber mat and the synthetic resin film, and the synthetic resin film to each other. And a step of pressing and bonding the synthetic resin films on the front side and the back side between the inorganic fiber mat and the inorganic fiber mat, and cutting the entire width at the same time. A method for producing a synthetic resin film-coated inorganic fiber heat insulating and sound absorbing material.