P.P (Polypropylene or Polypropene)


What is P.P (Polypropylene or Polypropene)?

Polypropylene or polypropene (PP) is a thermoplastic polymer, made by the chemical industry.
Most commercial polypropylene is isotactic and has an intermediate level of crystallinity
between that of low density polyethylene (LDPE) and high density polyethylene (HDPE).
PP is normally tough and flexible, especially when copolymerized with ethylene.
This allows polypropylene to be used as an engineering plastic, competing with materials such as ABS.
Polypropylene is reasonably economical, and can be made translucent when uncolored but is not
as readily made transparent as polystyrene, acrylic or certain other plastics. It is often
opaque and/or colored using pigments. Polypropylene has good resistance to fatigue.

Polypropylene has a melting point of ~160C (320F), as determined by Differential scanning calorimetry (DSC).

USAGE OF PP (Polypropylene) BAGS

PP bags have a versatile usage such as Trash Bags, food bags, leak proof fish bags, Mattress Bags,
Grocery bags, garment bags, Poly sheeting and confectionary and snacks.

L.D. P.E (Low Density Polyethylene)

What is L.D.P.E (Low Density Polyethylene)?

The first of the polyolefin, Low Density Polyethylene (LDPE) was originally prepared some fifty
years ago by the high pressure polymerization of ethylene. Its comparatively low density arises
from the presence of a small amount of branching in the chain (on about 2% of the carbon atoms).
This gives a more open structure. Low Density Polyethylene (LDPE) is a most useful and
widely used plastic especially in dispensing bottles or wash bottles.

USAGE L.D.P.E (Low Density Polyethylene) Bags

These transparent low density polyethylene bags have many uses. Bags are used mostly to pack
Food stuff, Liquid Chemicals, Lubricants,
Especially useful as specimen, sample and freezing bags.
Ideal for storing and shipping items.

H.D.P.E (High Density Polyethylene)

What is H.D.P.E (High Density Polyethylene)?

HDPE has little branching, giving it stronger intermolecular forces and tensile strength than
lower-density polyethylene. 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.

USAGE of H.D.P.E (High Density Polyethylene)

HDPE Bags are very powerful to pack Confectionery Packets, Cement Fertilizer,
Petrochemicals, Sugar, Tarpaulins, Tea Food Grains Paper & Textiles and many more food
stuff companies.