What is HDPE/PP & Suitable Products

A popular name in both Europe and USA, Spiral tanks have also been available for the past two decades in India. Developed and patented by BAUKU of Germany, the tanks are manufactured by a unique process known as Spiral winding. The spiral tank process involves extruding a special engineering grade of High Density Polyethylene (HDPE) and Polypropylene (PP) into a strip and then winding it spirally and continuously over a rotating mandrel to form a homogeneous, seamless shell. These tanks can withstand an extreme temperature range of-40°c to 60°c (HDPE) and up to 100°c (PP).

The fabricated tanks are available in a wide range of shapes and sizes to suit your requirements up to 60,000 litters. Capacity in diameters of 300 mm, 457 mm, 500 mm, 600 mm, 700 mm, 800 mm, 1000 mm, 1220 mm, 1600 mm. 1840 mm, 2000 mm, 2200 mm, 2400 mm, 3000 mm, 3600 mm.

HDPE

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. It takes 1.75 kilograms of petroleum (in terms of energy and raw materials) to make one kilogram of HDPE. The  Molecular formula  Structure is  [-CH2-CH2-] n.  HDPE is commonly recycled. HDPE is resistant to many different solvents and has a wide variety of applications. HDPE is very low moisture absorption, and high tensile strength.

Properties

HDPE has little branching, giving it stronger intermolecular forces and tensile strength than lower-density polyethylene. The difference in strength exceeds the difference in density, giving HDPE a higher specific strength. It is also harder and more opaque and can withstand somewhat higher temperatures (120 °C/ 248 °F for short periods, 110 °C /230 °F continuously). High-density polyethylene, unlike polypropylene, cannot withstand normally-required autoclaving conditions. The lack of branching is ensured by an appropriate choice of catalyst (e.g., Ziegler-Natta catalysts) and reaction conditions. HDPE contains the chemical elements carbon and hydrogen.

  1. Max Temp : 248°F 120°C
  2. Mini Temp : -148°F -100°C
  3. Autoclavable: No
  4. Melting Point: 266°F 130°C
  5. Gas sterilization: Yes
  6. Dry Heat sterilization: No
  7. Tensile Strength: 4550 psi
  8. Hardness: SD65
  9. Transparency: Translucent
  10. Flexibility: Rigid
  11. Specific Gravity: 0.95

PP

Polypropylene (PP), also known as polypropene, is a thermoplastic polymer, made by the chemical industry. and used in a wide variety of applications, including packaging, textiles (e.g. ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes. An addition polymer made from the monomer propylene, it is rugged and unusually resistant to many chemical solvents, bases and acids.

There are three general types of polypropylene: homopolymer, random copolymer, and block copolymer. The comonomer used is typically ethylene. Ethylene-propylene rubber or EPDM added to polypropylene homopolymer increases its low temperature impact strength. Randomly polymerized ethylene monomer added to polypropylene homopolymer decreases the polymer crystallinity and makes the polymer more transparent. Below are details for PP.

  1. Max Temp : 135°C
  2. Mini Temp : -20°C
  3. Gas sterilization: Yes
  4. Dry Heat sterilization: No.
  5. Autoclavable: Yes.
  6. Transparency: Translucent
  7. Flexibility: Rigid
  8. Specific Gravity: 0.90
 List of Suitable Products
Acetic Acid
Acetic Acid Glaciat
Acetic Acid (50%)
Acetone
Acids, aromatic
Acrylonitrile
Allyl Alcohol (96%)
Alum
Aluminium Chloride
Aqueous Solutaons
of all sorts
Ammonia
Ammonium Chloride
Amyl Acetate
AmylAlcohol
Aniline
Bust Treating Solutions
Beer Finings
Benzaldehyde
Benzene Sulphonic Acid
Benzoic Acid
Benzyl Alcohol
Borax
Boric Acid
Brine, saturated
Bleach (Sodium)
Hypochlorite
Brake Fluid
Butanol
Butylene Glycol
Calcium Chloride
Calcium Hypochlorite
Cafion Dioxide
Caustic Alkalies
Caustic Potash
Caustic Soda
Chloroacetic Aqid (mono)
Chromic Acid (20%)
Cosmetic Substances
Cooking Oil
(hydrogenated)
Citric Acid
Copper Salls
Cyclohexane
Cyclohexanol
De mineralised Water
Detergents, synthetic
Dextrose
Dichloroacelic Acid (50%)
Dichloroacetic Methyl
Ester
Dimethyllormamide
Dircxan
Dyestuff lnlermediates
Emulsifiers
Emulsions (Paint, Wax
Polymer)
Ethanol (96%)
Ethylene Glycol
Euron G
Fatry Acide (C6)
Ferric Chloride
Fluosilicic Acid
Forlitied Wines
Formaldehyde (40%)
Formic Acid
Fructose
Fruil Juices
Fruit Pulp
Gelatin
Glycerol
Glycerol Chlor Hydrin
Glycerine
Glucose
Glycol (Conc,y
Glycolic Acid (55"/.)
Glycolic Acid (70ol.)
Hydrazine Hydrate
Hydrobromic Acid (50%)
Hydrochloric Acid
(all conc)
Hydrocyanic Acid
Hydrofluoric Acid (60%)
Hydrogen Chloride
(gaseous)
Hydrogen Peroxide (30%)
Hydrogen Peroxide (12%)
Hydrogen Sulphide
lsopropanol
Lactic Acid (960/")
Linseed Oil
Leather Tanning
Magnesium Chloride
Maleic Acid
Maleic Acid (50%)
Marmalade and Jam
Mercury
Mercury Chloride
Methanol
Metal plating solutions
Meat Extracls
Methyl Glycol
Mineral Acids
Mitk
MineralOils
Monochloroacetic Acid
Monochloroacetic
Ethyl Ester
Monochloroacettc
Methyl Ester
Molasses
Morpholine
Nickel Salls
Nitric Acid (10%)
Nitric Acid (25%)
Nilrous Fumes
Olive Oil
Paraffin Oil
Perchloric Acid (20"/o)
Pharmaceulical
Preparations
Phosphates
Phosphoric Acid (25%)
Phosphoric Acid (50%)
Phosphorus Pentoxide
Photographic Developers
Plastic Granules
Plastic Granules
Plaslicisers
Phthalic Acid (50%)
Polyglycol
Potassium Bichromate
(4E/ol
Potassium Chloride
Potassium Hydroxide
(30%) solution
Propylene Glycol


Propionic Acid (5002")
Rubber Lattiies
Sea Water
Silicic Acid
Silicone Oil
Silvet Nitrale
Sodium Benzoare
Sodium Borale
Sodium Carbonale
Sodium Chloride
Sodium Chlorite (SO"/")
Sodium Hypochlorite
{30% solution)
Sodium Hypochlorite
Soft Drinks
Sodium Nitrate
Sodium Silicare
Sodium Sulphide
Sodium Thiosulphate
Sturries
Stareh
Stearic Acid
Succinic Acid (50%)
Sugar Syrup
Sulphates
Sulphur
Sulphur Dioxide (dry)
Sulphur Dioxide (wet)
Sulphuric Acid (10%)
Sulphuric Acid (50%)
Sulphurous Acid
Tartaric Acid
Tannic Acid (10%)
Tallow
Tea Extract
Texlile Finishing Liquors
Textile Finishing Liquors
Tributyl Phosphate
Trichloroacetic Acid (50%)
Triethanolamine
Tutogen'U'
Vinegar
While Spiril
Yeasl
Zinc Chloride
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