CN202691319U

CN202691319U - Three layer co-extrusion polypropylene randon coplymer (PPR) water supply pipe

Info

Publication number: CN202691319U
Application number: CN 201120542551
Authority: CN
Inventors: 王海燕
Original assignee: SHENSU TECHNOLOGY Co Ltd
Current assignee: SHENSU TECHNOLOGY Co Ltd
Priority date: 2011-12-22
Filing date: 2011-12-22
Publication date: 2013-01-23
Anticipated expiration: 2021-12-22

Abstract

The utility model discloses a three-layer co-extrusion polypropylene randon coplymer (PPR) water supply pipe. A three layer co-extrusion composite machine head and a manufacturing technique are utilized to process and manufacture the water supply pipe. The section of pipe material is divided into three layers that an inner layer (1) is a functional layer added with efficient and special antibacterial master batch; a middle layer (2) is a structural layer added with common grey master batch; and an outer layer (3) is a color layer added with master batch of white, green and other colors. The three layer co-extrusion PPR water supply pipe has the advantages of being advanced in production technology, stable and reliable in product performance, and capable of saving functional master batch and improving use efficiency of the functional master batch. The problems that transmission of light is high and algae are easy to breed and green mosses are easy to produce in a white pipe material in the prior art that can be solved, and requirements for the white PPR of a user can be satisfied.

Description

Three-layer co-extruded PPR supply pipe

Technical field

The utility model relates to a kind of three-layer co-extruded PPR supply pipe, belongs to the chemical building material technical field.

Background technique

The PPR supply pipe is take atactic copolymerized polypropene resin (PPR) as main raw material, the novel tube of extruding and moulding manufacturing: can use in up to 95 ℃ of situations in continuous operation hydraulic pressure, water temperature to reach 50 years; Also paid attention to by countries in the world with performances such as health, environmental protection and the corrosion resistant of brilliance, pliable and tough, antidetonations; And the installing engineering of PPR tubing can adopt simple, convenient, reliable hot melt to connect; So its complex art, performance and economic indicator all are better than galvanized pipe, UPVC pipe, PE pipe and aluminium-plastic composite pipe, be one of the leading products of present stage feedwater piping.

But the white PPR tubing that circulates on the market is though receive praises from customers, also high with himself transmission of light, easily in use grow the shortcoming of algae, generation green paint, bring a lot of worries to the user, perplexing for a long time technology and the sales force of plastic cement pipeline industry.

Summary of the invention

The purpose of this utility model is: adopt the three-layer co-extruded technology that goes out, add different masterbatch according to each layer function needs, produce that a kind of transmittance is low, the novel PPR supply pipe of bacteriostasis antibiosis, solve the white PPR supply pipe of producing by prior art, easily grow algae, produce the problem of green paint.

The utility model is achieved by the following technical solution: the first, and the PPR supply pipe that three-layer co-extruded technology is produced uses special-purpose composite machine head and production technology; The second, internal layer (1) thickness 0.1-0.5 mm is antibiotic layer, adds efficient special-purpose antibacterial plastic concentrate in the PPR resin, plays the effect that algae adheres to, grows that suppresses; Mesosphere (2) is construction layer, except satisfying mechanical property requirements, adds common grey color masterbatch in the PPR resin, plays the effect that shielded from sunlight penetrates, and reduces the transmittance of PPR pipe; Outer (3) thickness 0.2-1.0 mm is coloration layer, adds white, green, red, orange, blue or other color color masterbatches, satisfies different user to the demand of outward appearance; Internal layer (1)+mesosphere (2)+skin (3) thickness sum is definite according to service condition and GB/T18742 requirement, and shape can be according to using needs be designed to circle, ellipse, regular hexagon, regular pentagon.

The utility model has the advantage of: the first, three layers of compound PPR supply pipe that adopt coextrusion technology to produce use special-purpose composite machine head and production technology, and production technology is advanced, and product performance are stable, reliable in quality; The second, tube wall is divided into three layers, according to the difference of adding masterbatch, realizes function separately, has both reduced the masterbatch consumption, has improved the utilization efficiency of masterbatch, reduces cost of material, meets the needs of customers again, has obtained good effect.

Description of drawings:

Fig. 1: three-layer co-extruded PPR supply pipe structural representation.

Embodiment:

In this manual, consider that the sectional shape of PPR tubing is generally annulus, the main distinction of different size is external diameter and wall thickness; For saving space, other shapes no longer repeat to draw, and only masterbatch consumption, wall thickness are described.

Mode of execution 1: to dn=20mm, the tubing of S3.2 series, internal layer (1) wall thickness e ₁=0.1-0.3mm, mesosphere (2) wall thickness e ₂=1.8-2.5mm, skin (3) wall thickness e ₃=0.3-0.5mm, nominal wall thickness e _n=e ₁+ e ₂+ e ₃＞=2.8mm; Use the PPR resin to be shaping material, internal layer (1) adds 3-5 part antibacterial plastic concentrate, and mesosphere (2) add 1-2 part grey color masterbatch, and outer (3) add 2-4 part white color masterbatch.

Mode of execution 2: to dn=32mm, the tubing of S4 series, internal layer (1) wall thickness e ₁=0.2-0.4mm, mesosphere (2) wall thickness e ₂=2.4-3.2mm, skin (3) wall thickness e ₃=0.4-0.8mm, nominal wall thickness e _n=e ₁+ e ₂+ e ₃＞=3.6mm; Use the PPR resin to be shaping material, internal layer (1) adds 3-5 part antibacterial plastic concentrate, and mesosphere (2) add 0.75-1.5 part grey color masterbatch, and outer (3) add 2 parts of white color masterbatches.

Mode of execution 3: to dn=63mm, the tubing of S3.2 series, internal layer (1) wall thickness e ₁=0.3-0.5mm, mesosphere (2) wall thickness e ₂=7.2-7.8mm, skin (3) wall thickness e ₃=0.5-1.0mm, nominal wall thickness e _n=e ₁+ e ₂+ e ₃＞=8.6mm; Use the PPR resin to be shaping material, internal layer (1) adds 3-5 part antibacterial plastic concentrate, and mesosphere (2) add 0.5-1.0 part grey color masterbatch, and outer (3) add 2 parts of green color masterbatches.

Claims

1. three-layer co-extruded PPR supply pipe, it is characterized in that: internal layer (1) thickness 0.1-0.5mm is antibiotic layer; Mesosphere (2) is the sunlight covering layer; Outer (3) thickness 0.2-1.0mm; Internal layer (1), mesosphere (2), outer (3) thickness sum and nominal outside diameter meet the GB/T18742 requirement.

2. three-layer co-extruded PPR supply pipe according to claim 1 is characterized in that: the supply pipe sectional shape is circular, oval, square, regular hexagon.