JP3206943U - Plastic drain pipe - Google Patents

Abstract

A drain pipe made of synthetic resin such as a vinyl chloride pipe employed for a drain pipe in a building is provided with a drainage sound (noise) prevention function and excellent in workability. The surface of the tube body 1 is provided with a sound insulation coating layer 2 integrated with the tube body 1 without a seam, instead of winding a sheet-like member around the entire surface of the tube body 1 of the synthetic resin tube. Since the sound insulation sheet member is not installed, the synthetic resin drain pipe is provided with a sound insulation film which is easy to manufacture and has no fear of surface peeling. [Selection] Figure 1

Description

  The present invention relates to a synthetic resin drain pipe.

  Hard PVC pipes have been adopted as drainage pipes for mid-to-high-rise housing, but it has been proposed to provide a sound insulation function to reduce the leakage of drainage sounds to synthetic resin drainage pipes as a countermeasure against noise caused by drainage sound. Yes.

  For providing the sound insulation function, a configuration is adopted in which a sheet member having a predetermined sound insulation and sound absorption function is wrapped around and covered with the surface of the synthetic resin tube (Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 9-269095. Japanese Patent Laid-Open No. 2006-161982.

  As disclosed in Patent Documents 1 and 2, it is necessary to cover the drain pipe and the covering sheet firmly and securely with the means for covering the surface of the synthetic resin pipe with the sound insulating sheet material. The manufacture is cumbersome, and overlapping portions of the sheet members are generated during the fitting, and the overlapping portions may become surface steps and may be caught during construction, which is inconvenient in handling during construction.

  Accordingly, the present invention proposes a synthetic resin drain pipe having a novel configuration that does not employ a sheet structure for imparting a sound insulation function.

  The synthetic resin drain pipe according to the present invention is characterized in that a sound insulation coating layer integrated with the pipe main body without a joint is provided on the entire surface of the synthetic resin pipe main body.

  Thus, the synthetic resin drain pipe is formed by integrally forming a predetermined resin layer (sound insulation coating layer) on the surface of the synthetic resin pipe (pipe main body) with a long resin coating apparatus. Since there are no such seams or overlapping layers, handling during construction is facilitated.

  In particular, the sound insulation coating layer may be composed of a double insulation layer of a lower heat insulation sound absorption layer and an upper sound insulation layer, and the heat insulation sound absorption layer reduces drainage sound and prevents condensation.

  The present invention is as described above, and since the sound insulation coating layer is integrally formed on the entire surface of the tube body of the synthetic resin pipe, an operation of separately forming the sound insulation sheet and mounting the sound insulation sheet on the tube body Without having to perform the process, it is possible to easily provide a sound insulation function to the synthetic resin drain pipe, and there is no possibility of peeling during transportation and work because there is no seam (overlapping part) as when using a sound insulation sheet. It is possible to provide a synthetic resin drainage pipe having a sound insulation function that is easy to handle.

The partial cutting front view of the embodiment of the present invention (partially omitted). Explanatory drawing of the manufacturing means. FIG.

  Next, an embodiment of the present invention will be described. The synthetic resin drain pipe A shown in FIG. 1 is an example in which a sound insulation coating layer 2 composed of a single sound insulation layer is provided on the entire surface of a synthetic resin pipe body 1.

  The pipe body 1 is a hard heat-resistant PVC pipe having an appropriate length (predetermined standard dimension), and a sound insulation coating layer 2 is applied to the surface of the pipe body 1 using a long resin coating apparatus B. is there.

  The long material resin coating apparatus B is supplied with a thermoplastic resin material to be in a molten state (a flexible deformable state), and is extruded to the entire peripheral surface of the long material (tube body) that passes through the resin. A device for coating a long resin coating device B is provided with an extrusion conveyor C for pushing the tube body 1 made of synthetic resin, a cooling part D for cooling the coating (resin curing), and a conveyor E for taking out. To use.

  The material a for forming the sound insulation coating layer 2 using this long resin coating apparatus B is a sound insulation main material having a high specific gravity and a sound insulation function, and barium sulfate 52 ± 5% by weight ratio, calcium carbonate 22 ± 5. % As a resin main material for coating the main material, polyvinyl chloride 13 ± 2%, plasticizer (phthalic acid) 8 ± 2%, modifier (chlorinated polyethylene) 2.5%, adhesive functional agent ( Acrylic polymer: ACR-401) 0.5%, stabilizer 1%, pigment 0.5% are used and supplied to the long resin coating apparatus B.

  Since the long material resin coating apparatus B mixes and heats the forming material a of the sound insulation coating layer 2 to form a mud, the pipe body 1 passes through the apparatus B and is sound-insulated on the entire surface by extrusion molding. A coating (thickness 0.5 to 3 mm) of the coating layer 2 is formed and extruded.

  And the cooling part D which received supply of the cooling water b immediately passes, the film is hardened and it forms in the sound insulation coating layer 2, By this, the synthetic resin drainage pipe A with which the pipe body 1 could be provided with the sound insulation function, It will be.

  In the present invention, the constituent components of the sound insulation coating layer 2 are arbitrary, the type and amount of the main material having a sound insulation function with high specific gravity are arbitrary, and the resin material can be arbitrarily selected and adopted for forming a film. .

  Further, a single sound insulation coating layer 2 is formed on the entire surface of the tube body 1 made of synthetic resin as in the embodiment described above, and a heat insulating sound absorbing layer (foaming layer) 3 is formed on the surface of the tube body 1. Furthermore, it is good also as the heat insulation synthetic resin drainage pipe A1 which provided the sound insulation coating layer 2 in the whole outer peripheral surface (FIG. 3). For example, after forming the lower heat insulating sound absorbing layer 3 with a resin having a sound absorbing function (for example, a heat-resistant foamed urethane resin) with the above long resin coating apparatus B, another long resin coating apparatus is used again. The upper sound insulation coating layer 2 can be formed, or by selecting a coating resin, the upper and lower resin layers can be simultaneously formed by using a single long resin coating apparatus equipped with a double die (die). It is theoretically possible to form.

A synthetic resin drain pipe A1 heat insulation synthetic resin drain pipe 1 pipe body 2 sound insulation coating layer 3 heat insulation sound absorption layer B long resin coating device C extrusion conveyor D cooling section E takeout conveyor

Claims (4)

  A synthetic resin drainage pipe characterized in that a sound insulation coating layer integrated with a pipe body without a seam is provided on the entire surface of the pipe body of the synthetic resin pipe.   The synthetic resin drainage pipe according to claim 1, wherein the sound insulation coating layer comprises a single sound insulation layer.   The synthetic resin drain pipe according to claim 1, wherein the sound insulation coating layer is constituted by a double coating layer of a lower heat insulation sound absorption layer and an upper sound insulation layer.   The single sound insulating layer or the upper sound insulating layer is formed by mixing 0.5 to 3 mm thickness of barium sulfate and calcium carbonate as a sound insulating main material and mixing polyvinyl chloride with an appropriate plasticizer and lubricant. 3. A synthetic resin drainage pipe according to 3.

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