JP2010101481A - Synthetic resin sound insulating drain pipe, and its joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive and well durable synthetic resin sound insulating drain pipe good in sound insulating performance, and adequate to a detached house for preventing dew condensation, and to provide a sound insulating pipe joint. <P>SOLUTION: A sound insulating sheet material 2 has a triple-layer construction of an inner layer formed of a sound absorbing material 3 consisting of foam urethane chips, an intermediate layer formed of a sound insulating material 4 consisting of a polyvinyl chloride sheet, and an outer layer formed of a non-woven cloth sheet 5, and is formed with a double-sided adhesive tape 6 adhered to the single side of the inner face of the sound insulating material. The sound insulating sheet material 2 is wrapped around the peripheral face of the synthetic resin drain pipe 1 and anchored thereto with the double-sided adhesive tape, and the non-woven cloth tape 7 is adhered to cover the anchored portion. The peripheral face of the synthetic resin pipe joint is covered with a cover material 9 which is punched out of the sound insulating sheet material and whose shape is approximate to the surface developed shape of the pipe joint, and fixed thereto with the adhesive tape 11 wrapped around and adhered along a joint portion of the cover material. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a synthetic resin sound insulation drain pipe and a synthetic resin sound insulation drain pipe joint mainly used for piping of a drain pipe for a detached house.

  Conventionally, drain pipes and pipe joints made of synthetic resin such as rigid polyvinyl chloride pipes may be melted down by the heat of the fire as they are, and the damage of the fire may increase. Those coated with refractory materials such as mixed mortar are used. Drainage noise is somewhat attenuated because it is covered with such a refractory material, but in recent years there may be a need for even more quietness, and additional sound insulation materials are added to meet this requirement. ing.

  On the other hand, although a synthetic resin drain pipe is used for a detached house, no special measures are required for fire, so it is not covered with refractory material, so the drainage noise is relatively large There was an inconvenience. In addition, the drainage pipe may cause condensation on the peripheral surface, which is not preferable in the case of a detached house because it causes mold and corrosion of wood.

As a means for reducing drainage noise of drainage pipes and pipe joints, it has been proposed to use a sound insulating material in which a drainage pipe or the like is laminated with foamed resin and a synthetic resin sheet (Japanese Patent Laid-Open No. 10-47583).
Japanese Patent Laid-Open No. 10-47583

  Although it can be predicted from the prior art that sound insulation effect can be obtained by covering the drainage pipes and pipe joints for detached houses with synthetic resin drainage made of synthetic resin, which has good sound insulation performance and prevents condensation. There has not been a sufficient solution for efficiently mounting on a pipe or mounting a sound insulation sheet material efficiently on a curved synthetic resin pipe joint and providing it at low cost. Further, since the drain pipe needs to be cut according to various installation dimensions, it is desirable that the sound insulation sheet material can be easily slid with respect to the pipe, can be cut easily, and has good durability.

  It is an object of the present invention to provide a sound insulation drain pipe and a sound insulation pipe joint made of a synthetic resin that is inexpensive and durable and is suitable for a detached house that satisfies such demands, has good sound insulation performance, and can prevent condensation. Is.

  In the present invention, in order to solve the above-mentioned problems, a sound insulating material in which the inner layer is formed of a sound absorbing material made of urethane foam chip on the peripheral surface of a synthetic resin drain pipe such as hard polyvinyl chloride, and the intermediate layer is made of a polyvinyl chloride sheet. A sound insulation sheet material having a three-layer structure in which an outer layer is formed of a nonwoven fabric sheet, and the double-sided adhesive tape is wound with a sound insulation sheet material having a structure in which a double-sided adhesive tape is attached to one side of the inner surface of the sound insulation material And a non-woven tape was attached to cover the fixing portion. It is preferable that the sound insulating sheet material is composed of one sheet and is wound around the peripheral surface of the synthetic resin drain pipe so that the side surfaces of the sound absorbing material are in abutment state.

  In addition, the outer surface of the pipe joint made of synthetic resin such as hard polyvinyl chloride is formed of a sound absorbing material made of urethane foam chips, the intermediate layer is made of a sound insulating material made of a polyvinyl chloride sheet, and the outer layer is a non-woven sheet. Covered with a coating material having a shape similar to the surface development shape of the pipe joint punched out from the three-layered sound insulation sheet material formed by the method, and the coating material is made of an independent foam material along its joint and has good stretchability The adhesive tape was fixed by winding.

  The sound-insulating sheet material used in the present invention is composed of a sound-absorbing material of a urethane foam chip that can obtain a sound-absorbing effect in a wide sound range by crushing urethane foam into a sheet shape, and the intermediate layer has a high density. Because it uses a non-woven sheet with a rough surface on the outer layer, it is made of a polyvinyl chloride sheet that has a sound insulation effect, and it can prevent leakage of noise generated in synthetic resin drainage pipes and fittings and non-woven cloth However, it is possible to prevent the sound insulation sheet material from being damaged, the PVC sheet from being deteriorated due to an external impact, and the like from being condensed on the surface, and at the same time as reducing the noise, it is possible to prevent the mold and the corrosion due to the condensation.

  In addition, since a double-sided adhesive tape is attached to one side of the inner surface of the sound insulating material, it can be fastened with the double-sided adhesive tape after it is wrapped around a drain pipe, and a non-woven fabric tape is attached to cover the fastening part. Therefore, the end of the winding end is suppressed and the sound insulating sheet material is difficult to peel off.

  Further, the sound insulation sheet material is punched out into a shape approximate to the surface development shape of the pipe joint made of synthetic resin to obtain a covering material, which covers the entire surface of the pipe joint, and at the joint where the covering material is abutted By winding and fixing a stretchable adhesive tape made of an independent foam material along the belt, it is possible to fix the coating material that is neatly coated and hardly peeled off. Since these materials are available at a relatively low cost, it is possible to manufacture a sound insulation drain pipe and a pipe joint at a low cost, and the sound insulation sheet material 2 is not bonded to the drain pipe 1 and can be easily slid. The work of cutting can be easily performed accordingly.

    The embodiment of the present invention will be described with reference to the accompanying drawings. FIGS. 1 to 5 show an embodiment applied to a drain pipe made of synthetic resin, and FIGS. 6 to 9 show an embodiment applied to a pipe joint made of synthetic resin. It is an example. 1 and 2, reference numeral 1 denotes a synthetic resin drain pipe such as hard polyvinyl chloride, and reference numeral 2 denotes a sound insulating sheet material wrapped around and covered with a synthetic resin drain pipe. As clearly shown in FIG. 3 or FIG. 5, the sound insulating sheet material 2 has a three-layer structure, the inner layer is a sound absorbing material 3 made of foamed urethane chips, and the intermediate layer is a sound insulating material made of a polyvinyl chloride sheet. 4. The outer layer was a nonwoven fabric sheet 5 made of chemical fibers, and these were bonded together.

  The sound insulation sheet material 2 is formed in a rectangular shape as shown in FIG. 4, the length thereof is slightly shorter than the length of the drain pipe 1, and the width of the sound absorbing material 3 is narrower than the width of the sound insulation material 4, Double-sided adhesive tape 6 was attached to one side of the inner surface of the sound insulating material 4. The sound insulating sheet material 2 is wound around the peripheral surface of the drain pipe 1, the side surfaces of the sound absorbing material 3 are butted together, and the double-sided adhesive tape 6 is fastened in this state, and further, this non-woven tape is covered as shown in FIG. 7 was pasted.

In this embodiment, a foamed polyurethane sheet (Achilles product name Marble Foam) formed by pulverizing urethane as the sound absorbing material 3 into a sheet shape having a thickness of about 5 mm, and a polyvinyl chloride having a thickness of 1 mm as the sound insulating material 4. A sheet made of 30 g / m ² of polypropylene was used as the nonwoven fabric sheet 5.

  A sound insulation sheet material 2 made of the above material is wound around a drain pipe 1 made of hard polyvinyl chloride having an inner diameter of 107 mm, an outer diameter of 114 mm, and a length of 2 m, and noise is measured by flowing waste water at a rate of 1 liter / second. As shown in FIG. 10, it was reduced by 10 db or more compared to the case without the soundproofing process, and was reduced by 16 db in the audible range. Since the surface of the sound insulation sheet material 2 wound around the drain pipe 1 is covered with a non-woven fabric, it is hard to condense and torn even if solids collide, protecting the intermediate layer PVC sheet and deteriorating it. The sound insulation effect was good because it could be prevented, and it was a single piece structure with no joints.

  When the peripheral surface of the pipe joint 8 made of hard polyvinyl chloride shown in FIG. 6 is covered with the sound insulation sheet material 2, the sound insulation sheet material 2 is punched with a covering material 9 having a shape approximate to the developed shape of the surface of the pipe joint 8. (FIG. 9) Affixed to the peripheral surface of the pipe joint 8 with an adhesive or a double-sided adhesive tape (FIG. 7). The band portion 9 a constituting the covering material 9 is wound around the connection port peripheral edge 8 a of the pipe joint, and the blade portion 9 b is attached to the peripheral surface 8 b of the pipe joint 8 and is entirely covered with the sound insulating sheet material 2. Then, one adhesive tape 11 is stuck and fixed three times so as to sequentially cover the joint portions 10 of the covering material 9. As a result, the covering material 9 is fixed in a state of covering the entire surface of the pipe joint 8, and noise generated in the pipe joint 8 becomes difficult to leak. The adhesive tape 11 is a lightweight, stretchable, heat-resistant tape material (Sekisui Chemical Co., Ltd., Bollara) coated with acrylic adhesive on polyethylene, and has an adhesive-free adhesive. I was able to do it. In addition, the shape of the coating | covering material 9 is changed with the shape of a pipe joint, and if necessary, it can also be set as 2 sets of structures.

Front view of the sound insulation drain pipe of the present invention Sectional drawing of the 2-2 line part of FIG. Enlarged view of the main part of FIG. Plan view of sound insulation sheet material Enlarged sectional view taken along line 5-5 in FIG. Front view of synthetic resin fittings Front view with synthetic resin pipe fitting covered with covering Front view with adhesive tape attached to the joint of the covering material Top view of the covering material Characteristics of sound pressure level

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Synthetic resin drainage pipe, 2 Sound insulation sheet material, 3 Sound absorption material, 4 Sound insulation material, 5 Nonwoven fabric sheet, 6 Double-sided adhesive tape, 7 Nonwoven fabric tape, 8 Synthetic resin pipe joint, 9 Coating material, 10 Joint part, 11 Adhesion tape,

Claims (3)

  The inner layer is made of sound-absorbing material made of urethane foam chip, the middle layer is made of sound-insulating material made of polyvinyl chloride sheet, and the outer layer is made of nonwoven fabric sheet on the peripheral surface of synthetic resin drain pipe such as hard polyvinyl chloride A sound insulation sheet material having a three-layer structure, wherein the sound insulation sheet material having a structure in which a double-sided adhesive tape is attached to one side of the inner surface of the sound insulation material is wrapped and fastened with the double-sided adhesive tape, and the fastening portion is covered. A sound insulation drain pipe made of synthetic resin, which is affixed with a non-woven tape.   2. The synthetic resin sound insulation drainage according to claim 1, wherein the sound insulation sheet material having a single sheet structure is wound around the peripheral surface of the synthetic resin drainage pipe so that the side surfaces of the sound absorption material are in contact with each other. tube.   The outer surface of the pipe joint made of synthetic resin such as hard polyvinyl chloride is formed of a sound absorbing material made of foamed urethane chips, the intermediate layer is made of a sound insulating material made of a polyvinyl chloride sheet, and the outer layer is made of a nonwoven fabric sheet. Covered with a covering material having a shape approximating the surface development shape of the pipe joint punched out from the three-layered sound insulation sheet material, and the covering material is made of an independent foam material along its joint, and has a good stretchability A sound insulation drainage pipe joint made of synthetic resin, which is fixed by winding and bonding.

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