Shanghai HSF Materials Technology Co., Ltd. |
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50 μm blue cast polypropylene film for food, medical can industrial packaging
50 micron translucent blue or opaque blue cast polypropylene (CPP)
film is a packaging material that is commonly used for various
applications.
Some of the main uses of 50 micron translucent blue or opaque blue
CPP film are:
1. Food packaging:
50 micron translucent blue or opaque blue CPP film is
widely used for packaging food products such as snacks, baked
goods, and
confectionery. Its high puncture resistance and
excellent sealing properties make it an ideal option for food
packaging applications.
2. Cosmetic and personal care products:
The film is often used to package cosmetic and
personal care products such as shampoos, lotions, and soaps.
The high clarity of the film allows the product to be
visible, while the excellent sealing properties help to maintain
product freshness and
protect against spills.
3. Labeling and printing:
50 micron translucent blue or opaque blue CPP film is
used for making labels for a broad range of products, including
food, beverage,
and cosmetic packaging. Its high printability and
translucency make it easy to incorporate logos and designs onto the
labeling.
4. Industrial packaging:
50 micron translucent blue or opaque blue CPP film is
used for packaging industrial products such as tapes, adhesives,
and sealants.
The strength and puncture resistance of the film
ensure that the products are protected during transportation.
5. Apparel packaging:
The film is used for packaging clothing and other
textile products. Its strength, durability, and puncture resistance
make it a great choice for
packaging materials that require protection from
external factors.
6. Stationery and office supply packaging:
The film is used for packaging stationery, office
supplies, and other miscellaneous items. Its strength and puncture
resistance make it
an excellent choice for protecting these products
during transportation.
Overall, 50 micron translucent blue or opaque blue CPP film is a
versatile and durable packaging material that finds use in various
industries
due to its high puncture resistance, excellent sealing properties,
good printability, and barrier protection. It is an ideal choice
for packaging
applications that demand more thickness than thinner transparent
films.
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 | 50 | GN/T 6672 |
Max. | ≤54 | |||
Min. | ≥46 | |||
Width | Avg. | mm | 1090 ±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 |