Shanghai HSF Materials Technology Co., Ltd. |
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60 μm natural color cast polypropylene film for food, medical can industrial packaging
60 micron natural color cast polypropylene (CPP) film can be used
for a wide variety of applications in several industries,
including:
1. Food packaging:
The high-quality barrier properties of 60-micron
natural color CPP film make it an ideal choice for packaging food
products such as
baked goods, snacks, and confectionery. The film's
natural color also makes it a popular choice for products that
require clear packaging.
2. Industrial packaging:
The strong, durable nature of 60-micron natural color
CPP film makes it a preferred choice for packaging industrial
products such as hardware,
tools, and small parts. The film provides protection
from dust, moisture, and other environmental factors during
transportation and storage.
3. Stationery and gift packaging:
Natural color CPP film is commonly used in stationery
and gift packaging applications, such as wrapping paper, portfolio
covers, and other
office supplies. The film's natural color gives the
packaging an attractive, translucent appearance.
4. Medical and pharmaceutical packaging:
The barrier properties of 60-micron natural color CPP
film make it an ideal choice for medical and pharmaceutical
packaging applications.
The film can be used to package medical devices,
surgical instruments, and other sensitive equipment that require
strong protection from
environmental factors such as moisture, as well as
tampering.
5. Labeling:
The natural color of 60-micron CPP film makes it a
preferred choice for labeling applications. The film can be
overprinted with customized
designs or used as a clear sticker to provide
information about the product.
6. Lamination:
60-micron natural color CPP film can be used as a
bonding layer in laminated structures with paper, aluminum foil, or
other films to provide
strength, stiffness, and additional barrier
properties.
These are just some of the many applications of 60-micron natural
color CPP film in various industries. With its excellent barrier
properties,
flexibility, and natural appearance, the film is a popular choice
for several packaging and industrial needs.
The significant feature of cast polypropylene film is its excellent
transparency, high gloss, and good moisture barriers making it
suitable for packaging applications where product visibility is
important. It is also highly durable, flexible, and has excellent
sealing properties, making it
ideal for applications requiring heat sealing. Furthermore, CPP film is highly resistant to punctures, tearing, and abrasion, which makes it a
reliable option for packaging applications that face rough handling during transportation.
Additionally, CPP film has good stiffness and dimensional
stability, which means it is unlikely to shrink or stretch during
processing or use, which
can help to ensure consistent packaging performance. It has also good printability and great clarity of graphics, which makes it ideal for using
visual cues as branding elements on packaging.
The process for producing cast polypropylene (CPP) film involves:
1. Polymerization:
Propylene monomers are polymerized under pressure and
high temperature to produce polypropylene resin pellets.
2. Extrusion:
The polypropylene resin pellets are melted and
extruded through a flat die to form a thin, continuous sheet.
3. Orientation:
The extruded sheet is stretched across the machine
direction (MD) and transverse direction (TD) to improve the
mechanical
properties and clarity of the film.
4. Cooling:
The film is cooled down using a cooling roll and
stored on a take-up roll.
5. Finishing:
The film is treated with corona discharge or other
surface treatments to improve printing quality and adhesion.
Now, coming to the advantages of CPP film over Biaxially Oriented
Polypropylene (BOPP) film:
1. Improved sealing properties:
CPP film has better sealing properties due to its
higher seal strength, which makes it ideal for use in food
packaging applications.
2. Enhanced clarity:
CPP film has better clarity and gloss than BOPP film,
which makes it more attractive for use in packaging applications
where product
visibility is essential.
3. Better hot tack properties:
CPP film has better hot tack properties, which allows
it to be used in high-speed packaging machines where quick sealing
is required.
4. Increased heat resistance:
CPP films have greater heat resistance than BOPP
films, making them better suited for use in hot-fill and retort
packaging applications
where high temperatures are required.
5. Higher puncture resistance:
CPP films have higher puncture resistance than BOPP
films, making them more durable and resistant to damage during
transportation
and storage.
Overall, CPP film has several advantages over BOPP film, making it
a popular choice for a wide range of packaging applications. CPP
films' improved sealing properties, clarity, heat resistance, and
puncture resistance make them ideal for use in food packaging, as
well as in industrial and agricultural packaging
applications.
Test Item | Unit | Range | Test Standard | |
Thickness | Avg. | μm | 60 | GN/T 6672 |
Max. | ≤64 | |||
Min. | ≥56 | |||
Width | Avg. | mm | 1020 ±3 | GN/T 6673 |
Tensile strength | MD | MPa | ≥20 | GN/T 1040.3 |
TD | ≤15 | |||
Elongation @ break | MD | % | ≤300 | GN/T 1040.3 |
TD | ≤300 | |||
Wetting tension | - | mM/m | ≥38 | GN/T 14216 |