Blow Molding

Blow Molding is a specialized method for creating hollow parts, predominantly used in the packaging industry.

Main Types: Extrusion Blow Molding (EBM) for large, handled containers made of HDPE; Injection Blow Molding (IBM) for high-precision neck finishes; and Injection Stretch Blow Molding (ISBM) for producing high-strength, clear PET beverage bottles.

Function: A heated plastic tube (parison) or preform is placed inside a mold and inflated with compressed air until it conforms to the mold walls.

Products: Beverage and chemical bottles, automotive fuel tanks, and detergent containers.

(HDPE) Blown Grade

GRADE	MFI	Density	Application
HBM5520	0.25 (190°C / 2.16kg)	0.955	Multipurpose blow molding process small blow molded articles containers for household industrial chemicals automotive supplies foodstuffs toiletries and cosmetics
HBM5020	0.3 (190°C / 2.16kg)	0.95	Multipurpose blow molding process small blow molded bottles packaging of consumer and dangerous goods
HD-0035	0.35 (190°C / 2.16Kg)	0.959	bottles for bleach motor oil toiletries mild and distilled water This grade is also used to make small containers (from 10L to 20L)
HBM-5510	10 (190°C/21.6Kg)	0.955	Large blow molding parts standard and lightweight Jerry cans
BL3	23 (190°C/21.6kg)	0.954	Small blow moulding Containers (up to 5 lit ) Packaging of pharmaceuticals & surfactants

Key
Materials and Applications in Film Casting

The
choice of polymer raw material is crucial for determining the
final film properties and is heavily influenced by the desired application:

1.
Polyethylene (PE) Grades

LLDPE (Linear
Low-Density Polyethylene): Widely used for high-clarity cast film
applications due to its superior toughness and puncture resistance. It is
the core material for high-performance stretch film.
LDPE (Low-Density
Polyethylene): Used for seal layers in laminates where easy heat-sealing and low
cost are prioritized.
HDPE (High-Density
Polyethylene): Less common for thin films but used for stiffer, stronger cast
sheets and liners requiring chemical resistance.

2.
Polypropylene (PP) and Other Polymers

Cast Polypropylene
(CPP): Highly popular
for flexible food packaging, textiles, and medical packaging due to its
high heat resistance and excellent barrier properties.
PET (Polyethylene
Terephthalate): Cast into high-strength, thin films for electrical insulation,
optical displays, and specialty barrier layers.

Critical
Applications

The
high-quality output of the film casting process
supports demanding markets:

Flexible Packaging: Retort pouches, stand-up
pouches, snack food bags (often as a substrate for printing or
lamination).
Hygiene and Medical: Non-woven laminates, breathable
barrier films for surgical drapes and wound care.
Technical Films: Release liners, protective films
for electronic displays, and specialized barrier films for solar panels
(photovoltaics).