..:: Parsethylene kish co. does not have any representative in iran ,The Company`s products are sold only through the central office with an official Certificate ::..


Polyethylene tank manufacturing


Polyethylene tank manufacturing involves several steps to ensure the production of high-quality tanks. The specific steps may vary depending on the manufacturing method used, such as rotational molding, blow molding, or extrusion blow molding. Here are the general steps involved in polyethylene tank manufacturing:

1. Design and Mold Preparation:

   - Determine the tank specifications, including size, shape, capacity, and any specific requirements.

   - Design the mold or tooling necessary for the manufacturing process, considering factors such as wall thickness, part geometry, and demolding considerations.

   - Prepare the mold by cleaning, applying release agents, and ensuring proper venting.

2. Material Selection and Preparation:

   - Select the appropriate polyethylene resin based on the desired properties, application requirements, and processing method.

   - Prepare the resin by drying it if necessary and blending it with additives such as stabilizers, colorants, and UV protectants to enhance performance and appearance.

3. Manufacturing Process:

Polyethylene tanks can be produced using two main types of production methods: single-wall (up to 5 layers) using rotational molding or double-wall using extrusion. The primary material used in the rotational molding process for plastic tank production is polyethylene.
The rotational molding process involves loading a specific amount of plastic granules into a rotating mold. The mold rotates around two main axes at relatively low speeds, causing the plastic to adhere to the mold's inner surface and create a layer. The rotation continues during the cooling stage to shape the plastic and solidify it. Once the plastic has hardened sufficiently, the cooling and rotation stop, and the plastic piece is removed from the mold. This process is repeated for each tank.
One important aspect of rotational molding is achieving uniform wall thickness. Modern machines with multiple arms can use different molds while ensuring uniform wall thickness through proper process control and suitable mold design. This results in consistent thickness throughout the tank's walls, unlike other methods that may have inconsistencies. Most commercially produced tanks using rotational molding are part of the thermoplastic family, particularly polyolefins and semi-crystalline polymers.

- Rotational Molding:

     - Load the powdered polyethylene resin into the mold.

     - Heat the mold while rotating it simultaneously to evenly distribute the melted resin and create a uniform layer on the inner walls.

     - Continue rotating the mold during the cooling phase to solidify the resin and maintain the desired shape.

     - Demold the cooled tank from the mold.

   - Blow Molding:

     - Extrusion Blow Molding:

       - Melt the polyethylene resin and extrude it as a continuous tube or parison.

       - Clamp the parison into the mold.

       - Introduce compressed air to expand the parison and shape it against the mold's inner walls.

       - Cool the tank while maintaining pressure to the shape.

       - Release the pressure and demold the cooled tank.

   - Extrusion Blow Molding:

     - Melt the polyethylene resin and extrude it as a continuous tube or parison.

     - Clamp the parison into the mold.

     - Introduce compressed air to expand the parison and shape it against the mold's inner walls.

     - Cool the tank while maintaining pressure to the shape.

     - Release the pressure and demold the cooled tank.

4. Post-Processing and Finishing:

   - Trim or cut any excess material from the tank to achieve the final desired shape.

   - Apply surface finishing techniques such as sanding or polishing to improve the appearance and texture of the tank.

   - Join multiple tank components together using welding or adhesive techniques if necessary.

   - Apply surface coatings or protection layers to enhance chemical resistance or UV stability.

5. Quality Control and Testing:

After production, polyethylene tanks undergo various tests to ensure their quality. The main tests conducted during the production stages, including post-production, adhere to international standards such as those by the American Society for Testing and Materials (ASTM) and Australian/New Zealand standards (AS/NZ).

One important test is the thickness measurement test, which uses ultrasonic thickness gauges to measure the thickness of different parts of the tank, including the walls and bases. This test ensures compliance with ASTM standards. Rotational molding provides the advantage of uniform layer thickness.

Another important test is the impact test, which involves subjecting a sample of the tank to low temperatures (-36°C) for a minimum of 30 minutes and then conducting an impact test using a dart-drop tester. If the sample breaks or develops a hole upon impact, it is considered defective and unsuitable for sale.

   - Conduct rigorous quality control checks throughout the manufacturing process to ensure the tanks meet specifications and quality standards.

   - Perform tests on raw materials, such as resin analysis and melt flow index testing.

   - Conduct in-process inspections to verify dimensional accuracy, wall thickness, and structural integrity.

   - Perform finished product testing, including pressure testing, leak testing, and physical property testing, to ensure tanks meet performance requirements.

6. Packaging and Shipping:

   - Package the finished tanks appropriately to prevent damage during transportation.

   - Label the tanks with necessary information such as capacity, material, and manufacturing date.

   - Arrange for shipping to the designated destination.

Polyethylene tanks are known for their mechanical resistance, even in very low temperatures, and their ability to withstand acids, bases, and chemicals. As part of the final inspection, experts examine the tanks for any potential defects on the surfaces and interiors. If any flaws are found, the product is rejected and not sent to distributors. The final inspection is crucial to ensure that the approved tanks are used for sensitive applications. Polyethylene tanks are an excellent choice for storing fluids with high corrosiveness.

By following these steps, manufacturers can produce reliable and durable polyethylene tanks that meet the specific requirements of various industries and applications.

In summary, the production of polyethylene tanks involves rotational molding, where plastic granules are loaded into a rotating mold, melted, and then solidified to form a one-piece tank. This process ensures uniform wall thickness. After production, the tanks undergo thickness and impact tests, among others, to ensure their quality. The final inspection ensures that only approved tanks with no defects are released for use. Polyethylene tanks are cost-effective, durable, and suitable for various applications.

Read More:

Top categories

UAE 1: 00971 56 286 1414
H.Emami @ Parsethylene-kish.com
UAE 2: 00971 56 286 1515
Info @ Parsethylene-kish.com
IR : +9821 88 20 20 60
  Contact us
  Pars Ethylene Kish at a glance
  Pars Ethylene Kish, a symbol of capability and quality
  Mission and Vision
  Sale and its Strategies in Pars Ethylene Kish
  Reason for High Quality of Pars Ethylene Kish Products
  Quality Control Laboratory
  Guaranty & after sales service
  Reasons of paying attention to quality
  INSO Certificate
  Maintenance and storage of HDPE pipes
  Instructions for storing HDPE pipe against UV
  Polyethylene Joining Procedures
  Polyethylene Pipe
  HDPE pipes for gas supply
  HDPE Corrugated Pipes
  HDPE Single Wall Fittings
  HDPE Double Wall Fittings
  HDPE Electrofusion Fittings
  Cage fish farming
  Domestic Sewage Treatment
  Polyethylene Manholes
  Telecommunication manhole
  HDPE Fire Fighting Pipe
  HandBook of HDPE Pipe
  HDPE Pipe price list
  Price list of double-Layer Corrugated pipe
  FM Approval
  PDMS Catalogue
  HDPE Pipes in Power Plants
  HDPE Pipes in railway and urban rail
  HDPE Pipe in Mining
  HDPE Pipe in Airport
  HDPE Pipe in Conducting Agricultural Pesticides
  HDPE Pipe in drain
  HDPE Pipe in Landfills
  The Coating Materials Of Steel Pipes
  Cable Covering
  HDPE pipe in Ventilation
  HDPE Pipe in Ships
  HDPE Pipes in Floor Heating
  Polyethylene Manhole Sewage
  U-PVC Pipe
  Draining Pipe
  PEX Pipe
  Polyethylene drip irrigation tape
  PushFit System
  HDPE Dredging Pipe
  Polyethylene Welding
  Sewer Fittings
  Application of Polyethylene Manhole
  Polyethylene Tank
  PE Septic Tank
  PE Jersy Barrier
  Fire Sprinklers
  Composite Manhole Cover
  PE Valve Box
  HDPE Pipe in Sea Water
  Price of HDPE pipe
  Brochures & Catalogue
  Polyethylene Machinary
  Raw Material
  Borouge HDPE Pipe Systems
  Reference standards
  Standards for HDPE Pipe
  Technical Data
  Job Opportunities
  HSE Plan
  Welding Course Study
Quality Begins with Pars Ethylene Kish The new generation of parsethylene kish corrugated pipes PDMS Catalog Pars Ethylene Kish Polyethylene cage fish farming Domestic Sewage Treatment FM Approval Certificate Pars Ethylene Kish Isiri Certeficate of Parsethylene Kish 17025 Certificates Integrated Management System SGS Quality Managment System Raw Material of HDPE of Parsethylene Kish Reference standards of Polyethylene, PVC and polymer Handbook of Pars Ethylene Kish products Technical Certificate of Road, Housing and Urban Development Research Center Health Premission of Polyethylene pipefor water supply New Generation of Composite Cover Failure modes and mechanisms in cast iron pipe Case Studies Reference standards of PE, PVC and polymer Fun & Game Join us on FaceBook Follow Us on Telegram

Pars Ethylene kish does not have any representative in iran ,The Company`s products are sold only through the central office 

Copyright © 2007- 2018 Pars Ethylene Kish Co. :: All rights reserved :: Design & Development by: Pars Ethylene Kish ::