JPH1194341A - Sound proof and heat insulating hose and manufacture therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sound proof and heat insulating hose which provides high productivity and excellent durability while maintaining quietness, and to provide a manufacturing method therefor. SOLUTION: A sound proof and heat insulating hose comprises a tubular sound absorbent material 2 covered with films 5 and 6 at least on the inner surface thereof, a reinforcement synthetic resin coil 3 provided on the outer circumference of the tubular sound absorbent material 2, and a heat insulating material 4 which covers the outer circumference of the reinforcement synthetic resin coil 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof and insulated hose mainly used as a ventilation or air conditioning hose in buildings such as dwellings, and a method of manufacturing the same.

[0002]

2. Description of the Related Art In recent years, in order to suppress energy consumption, for example, a window glass is doubled, or a gap between an outer wall and a room is filled with a heat insulating or soundproofing material, thereby significantly improving the heat insulation, soundproofing and confidentiality of the room. It has been raised to. Since such rooms with enhanced heat insulation, soundproofing, and confidentiality are often used in a closed state, the room is always kept warm and soundproof, especially the wind noise when blowing air and the noise from the air source. It is necessary to ventilate while preventing.

[0003] As a blowing hose used for this ventilation, for example, a hose described in Japanese Patent Application Laid-Open No. 9-89357 is known. The blowing hose described in this publication spirally winds a narrow band made of nonwoven fabric,
The abutting or overlapping portion is reinforced with a resin reinforcing band, and a continuous cell layer and a closed cell layer are spirally formed on the outer periphery of the resin reinforcing band with a resin linear body disposed therebetween. It is.

[0004]

In the blowing hose described in the above-mentioned publication, since each member is spirally wound while adhering its ends to each other, a tubular hose is formed.
There is a problem that it takes time and productivity is reduced. Further, since the blowing hose is formed by spirally winding each member while adhering the respective ends to each other, when the blowing hose is bent at the time of this piping, the spirally bonded portion is easily peeled off. There was a problem that the durability was poor.

The present invention has been proposed in view of the above problems, and an object of the present invention is to provide a soundproof and insulated hose having high productivity and excellent durability while maintaining quietness, and a method of manufacturing the same. Things.

[0006]

In order to achieve the above object, a soundproof and heat insulating hose according to the present invention is provided with a tubular sound absorbing material having a film disposed on at least an inner surface thereof, and provided on an outer periphery of the tubular sound absorbing material. And a heat insulating material covering the outer periphery of the synthetic resin reinforcing coil.

A sound absorbing material is formed by joining both side edges of a foamed synthetic resin sheet in which a thin film is adhered to side portions forming a tubular outer peripheral surface and / or an inner peripheral surface. It is also characterized by being constituted.

[0008] The foamed synthetic resin sheet is formed of continuous urethane foam, the heat insulating material is formed of independent foamed polyethylene foam, or the film adhered to the front and back of the sound absorbing material has a heat-sealing property. One of the features is that it is formed of a resin fiber non-woven fabric or a perforated or non-perforated film material.

Next, a method for manufacturing a soundproof and heat-insulating hose according to the present invention comprises forming a tubular sound-absorbing material by bonding both side edges of an elastic film material having a film adhered to the front and back, A high-temperature synthetic resin reinforcing coil is spirally disposed on the outer periphery of the tubular sound absorbing material, and the film on the outer periphery of the sound absorbing material is melted at the temperature of the synthetic resin reinforcing coil to form a synthetic resin reinforcing coil of the sound absorbing material. The synthetic resin bonded or melted to the outer circumference is spirally attached to the outer circumference of the sound absorbing material to form a synthetic resin reinforcing coil, and the outer circumference of the sound absorbing material and the synthetic resin reinforcing coil are covered with a heat insulating material. It is characterized by the following.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a soundproof and heat-insulating hose according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a soundproof and heat-insulating hose, and FIG. 2 is a partially cutaway perspective view of the hose.

The soundproof and heat-insulating hose 1 includes a sound-absorbing material 2 formed in a tubular shape, a synthetic resin reinforcing coil 3 disposed on the outer periphery thereof, and a heat insulating material provided on the outer periphery of the synthetic resin reinforcing coil 3. 4

As shown in FIG. 3, the sound absorbing material 2 is formed by attaching a thin synthetic resin film 5 to a back surface which is an outer peripheral surface when formed into a tubular shape, and a synthetic material such as polypropylene on the inner surface of the tube. A continuous urethane foam (foamed synthetic resin sheet) 7 to which a nonwoven fabric 6 made of a resin fiber is adhered is formed into a tubular shape by bonding both side portions 7a and 7b of each other with an adhesive 8.

The non-woven fabric 6 adhered to the inner surface of the continuous urethane foam 7 is mainly made of a continuous urethane foam 7 by a cold / hot gas flowing through a tubular internal space.
It is intended to prevent collapse even when deteriorated.

When the sound-absorbing material 2 is formed in a tubular shape, the molten synthetic resin is supplied to the outer periphery thereof in the form of a coil at a pitch of about 12 millimeters, thereby forming a synthetic resin reinforcing coil 3.
reference). In order to supply the molten synthetic resin in a coil shape, the sound absorbing material 2 formed in a tubular shape is rotated or the synthetic resin is supplied while rotating. The pitch of the synthetic resin reinforcing coil 3 can be arbitrarily set according to the sending speed of the sound absorbing material 2.

The synthetic resin wire thus melted is used as the sound absorbing material 2
When supplied to the outer periphery of the sound absorbing material 2, the high heat causes the thin synthetic resin film 5 provided on the outer peripheral surface of the sound absorbing material 2 to soften and melt, so that the synthetic resin reinforcing coil 3 is directly attached to the sound absorbing material 2. Integrated into In this embodiment, a thin synthetic resin film 5 is provided on the outer periphery of the tubular sound-absorbing material 2. However, this synthetic resin film 5 can be omitted. In this case, the molten synthetic resin wire is used. Will be directly attached to the outer periphery of the sound absorbing material 2.

Thereafter, as shown in FIG. 5, a heat insulating material 4 formed of a sheet of a closed-cell foamed polyethylene foam is wound around the outer periphery of the sound absorbing material 2 formed in a tubular shape and the reinforcing coil 3 made of synthetic resin. When the side edges 4a and 4b are adhered to each other with the adhesive 9, the soundproof and heat insulating hose 1 is formed here. At this time, when the heat insulating material 4 is wound around the synthetic resin wire provided in a coil shape on the outer periphery of the sound absorbing material 2 at high heat, the heat insulating material 4 at the portion contacting the synthetic resin wire at the high temperature is softened and melted,
Since the sound absorbing material 2 and the heat insulating material 4 are bonded to each other via the synthetic resin reinforcing coil 3 and are separated from each other at other portions, the sound insulating and heat insulating hose 1 is easily bent.

The inner surface of the sound absorbing member 2 and the outer peripheral surfaces of the sound absorbing member 2 and the reinforcing coil 3 made of synthetic resin can of course be fixed with an adhesive.

The soundproof and heat-insulating hose 1 formed as described above is made of synthetic resin when bent or piped to supply cooling or hot gas from a cooling or hot gas supply source to each room of the house. The heat insulating material 4 and the sound absorbing material 2 can be freely bent in a shape-retained state without being deformed by the reinforcing coil 3 and can be easily piped. Thus, when ventilating or supplying cold / hot gas with the piped soundproof and heat-insulating hose 1, the noise of the cold / hot gas supply source and the wind noise generated at the time of ventilation such as ventilation are absorbed by the sound absorbing material 2. It becomes difficult to reach each room.

The sound insulating and heat insulating hose 1 has an outer peripheral portion covered with a heat insulating material 4, and the heat insulating material 4 prevents loss due to heat dissipation of cold and hot gas flowing through the inside of the sound absorbing material 2. In addition, the energy saving effect can be enhanced. In addition, the nonwoven fabric 6 stuck to the inner surface of the continuous urethane foam 7 in the above-described embodiment can be a thin film having holes or holes, or a knitted fabric formed by knitting ultrafine fibers. Needless to say.

[0020]

As described above, according to the present invention, a sound absorbing material in which a film is adhered to an inner surface formed into a tubular shape by joining both side edges and a tubular sound absorbing material is adhered to the outer periphery of the tubular sound absorbing material. And a heat insulating material covering the outer periphery of the synthetic resin reinforcing coil, so that the sound absorbing material absorbs wind noise at the time of blowing air and noise from a blowing source, thereby reducing noise. While preventing the generation and transmission of noise, the productivity can be greatly improved compared to those formed by spirally winding each of the members constituting the soundproof and heat-insulating hose, and the manufacturing cost is reduced accordingly. There is an advantage that can be.

Further, since the tubular sound-absorbing material is formed by joining the side edges of the continuous foamed urethane foam having elasticity, the conventional sound-insulating hose according to the present invention is bent even when the hose is bent at the time of piping. There is also the advantage that the pipes can be easily formed with less occurrence of peeling at the joints, and the durability can be greatly improved, as in the case where each of the members constituting the soundproof and heat-insulating hose is spirally wound. is there.

Further, in the soundproof and heat-insulating hose according to the present invention, since the reinforcing coil is also made of synthetic resin, it can be easily cut with a cutting tool such as a cutter, so that the on-site work can be easily performed. There is also an advantage that the time required for can be shortened.

[Brief description of the drawings]

FIG. 1 is a perspective view of a soundproof and heat insulating hose.

FIG. 2 is a partially cutaway perspective view of a soundproof and heat insulating hose.

FIG. 3 is a perspective view schematically showing a procedure for forming a sound absorbing material into a tubular shape.

FIG. 4 is a perspective view schematically showing a procedure for disposing a synthetic resin reinforcing coil on a tubular sound absorbing material.

FIG. 5 is a perspective view schematically showing a procedure for disposing a heat insulating material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sound insulation heat insulating hose 2 ... Sound absorbing material 3 ... Reinforcement coil made of synthetic resin 4 ... Heat insulating material 5. 6 ... Film

[Procedure amendment]

[Submission date] October 1, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

Thereafter, as shown in FIG. 5, a heat insulating material 4 formed of a sheet of a closed-cell foamed polyethylene foam is wound around the outer periphery of the sound absorbing material 2 formed in a tubular shape and the reinforcing coil 3 made of synthetic resin. When the side edges 4a and 4b are adhered to each other with the adhesive 9, the soundproof and heat insulating hose 1 is formed here. At this time, when the heat insulating material 4 is wound around the synthetic resin wire provided in a coil shape on the outer periphery of the sound absorbing material 2 at high heat, the heat insulating material 4 at the portion contacting the synthetic resin wire at the high temperature is softened and melted,
A state in which the sound absorbing member 2 and the heat insulating material 4 is adhered through the synthetic resin-made reinforcing coil 3, since the other portions are separated from each other, soundproof insulation hose 1 becomes easy to bend.

Claims (6)

[Claims] 1. A tubular sound-absorbing material having a film disposed on at least an inner surface thereof, a synthetic resin reinforcing coil provided on an outer periphery of the tubular sound-absorbing material, and heat insulation covering the outer periphery of the synthetic resin reinforcing coil. Soundproof insulation hose comprising 2. A sound-absorbing material formed by joining both side edges of a foamed synthetic resin sheet having a thin film adhered to at least a side portion forming an outer peripheral surface and / or an inner peripheral surface of a tubular shape. The soundproofing and heat insulating hose according to claim 1, wherein: 3. The soundproofing and heat insulating hose according to claim 2, wherein the foamed synthetic resin sheet is formed of a continuous urethane foam. 4. The sound insulation hose according to claim 1, wherein the heat insulating material is formed of a closed cell polyethylene foam. 5. The film according to claim 1, wherein the film adhered to the front and back of the sound absorbing material is made of a heat-fusible synthetic resin fiber nonwoven fabric or a perforated or non-perforated film material. Soundproof insulation hose. 6. A tubular sound-absorbing material is formed by joining both side edges of an elastic film material having a film adhered to the front and back sides, and a high-temperature synthetic resin material is formed on the outer periphery of the tubular sound-absorbing material. The reinforcing coil is helically arranged, the film on the outer periphery of the sound absorbing material is melted at the temperature of the synthetic resin reinforcing coil, and the synthetic resin reinforcing coil is bonded to the outer periphery of the sound absorbing material, or the melted synthetic resin is used as the sound absorbing material. A method for manufacturing a soundproof and heat insulating hose, comprising: forming a synthetic resin reinforcing coil by spirally adhering to the outer periphery of a sound absorbing material and covering the outer periphery of the sound absorbing material and the synthetic resin reinforcing coil with a heat insulating material.