Description

BOPP/CPP Laminated Film is a two-layer flexible packaging material made by combining biaxially oriented polypropylene (BOPP) with cast polypropylene (CPP). The two polypropylene-based films are selected for different functions within the laminate: BOPP provides the outer packaging surface, while CPP serves as the inner heat-sealable layer.

This structure is useful for packaging manufacturers looking for a polypropylene-based laminate with good clarity, stiffness, sealing performance and flexible converting characteristics. Depending on the selected film grades and specifications, BOPP/CPP laminated film can be supplied as roll stock for bags, pouches and other flexible packaging applications.

What Is BOPP/CPP Laminated Film?

BOPP/CPP laminated film consists of two polypropylene-based layers:

BOPP / CPP

BOPP stands for biaxially oriented polypropylene, while CPP stands for cast polypropylene.

Although both layers are polypropylene-based, their manufacturing processes and characteristics are different. BOPP is commonly selected for the outer layer because of its clarity, stiffness, dimensional stability and suitability for packaging graphics. CPP is commonly used as the inner layer because it provides flexibility and heat-sealing performance.

This combination allows the laminate to use the characteristics of each film where they are most useful in the finished package.

BOPP and CPP: Different Roles in One Laminate

BOPP as the Outer Layer

BOPP provides the main outer surface of the packaging. Its clarity and relatively high stiffness can contribute to the visual appearance and handling characteristics of the finished package.

BOPP can also be selected for printed packaging applications where the outer surface needs to carry product graphics, branding or other information, depending on the film grade and printing process.

CPP as the Inner Layer

CPP is commonly used as the inner sealing layer. It can provide heat-sealing capability and flexibility, allowing the laminated film to be converted into sealed bags and pouches.

CPP can also be selected when the packaging process requires an inner polypropylene-based sealing film. The appropriate CPP grade should be matched to the sealing equipment, temperature conditions and finished package requirements.

In simple terms:

• BOPP: outer appearance, clarity, stiffness and dimensional stability
• CPP: inner sealing layer, flexibility and heat-sealing performance

BOPP/CPP Laminated Film Structure

Layer	Material	Primary Role
Outer Layer	BOPP	Provides clarity, stiffness, dimensional stability and an outer surface for packaging graphics.
Inner Layer	CPP	Provides flexibility and heat-sealing performance for flexible packaging conversion.

Why Use a BOPP/CPP Structure?

BOPP/CPP is useful when the packaging design benefits from having an oriented polypropylene outer layer combined with a cast polypropylene sealing layer.

One advantage of using the two materials as separate layers is that the outer and inner surfaces can be optimized for different parts of the packaging process.

The BOPP layer can contribute to package appearance and stiffness, while CPP provides the sealing function required during bag or pouch production. This makes the structure particularly relevant to packaging manufacturers that need a polypropylene-based flexible packaging laminate.

The final performance depends on the selected BOPP and CPP grades, thicknesses, lamination process and converting conditions.

Key Characteristics of BOPP/CPP Laminated Film

Property	BOPP/CPP Contribution
Clarity	BOPP can provide a clear and visually attractive outer film.
Stiffness	The BOPP layer contributes stiffness and dimensional stability to the laminate.
Heat Sealing	CPP provides the heat-sealable inner surface for suitable packaging processes.
Flexibility	CPP contributes flexibility to the inner side of the packaging structure.
Polypropylene-Based Structure	Both layers are polypropylene-based, creating a laminate with a consistent polymer family.
Printing	The BOPP outer layer can be used for packaging graphics according to the selected printing process.

BOPP/CPP vs. BOPP/PE

For buyers comparing flexible packaging structures, BOPP/CPP and BOPP/PE are especially relevant because both use BOPP as the outer layer while using different materials on the inside.

The main difference is therefore the inner sealing film: CPP in one structure and PE in the other.

Consideration	BOPP/CPP	BOPP/PE
Outer Layer	BOPP	BOPP
Inner Layer	CPP	PE
Sealing Function	Provided by CPP	Provided by PE
Polymer Family	Both layers are polypropylene-based	Combines polypropylene and polyethylene
Outer Appearance	Primarily determined by BOPP	Primarily determined by BOPP
Selection Focus	CPP sealing characteristics and polypropylene-based structure	PE sealing characteristics and the requirements of the packaging application

The choice between BOPP/CPP and BOPP/PE should be based on the actual sealing process, packaging machine, product requirements, temperature conditions and finished-package performance.

When Should You Consider BOPP/CPP?

BOPP/CPP can be considered for packaging projects where the buyer wants a BOPP outer layer combined with a CPP sealing layer.

It may be suitable when:

• A clear and relatively stiff outer packaging surface is required.
• The packaging design uses a polypropylene-based inner sealing film.
• Heat sealing is required during bag or pouch production.
• The packaging requires a flexible inner layer.
• The finished package needs a combination of appearance and sealing performance.
• The film will be supplied as roll stock for further flexible packaging conversion.

The correct film grade and thickness should be selected according to the packaging machine, sealing temperature, package dimensions and intended application.

Applications of BOPP/CPP Laminated Film

Snack and Dry Food Packaging

BOPP/CPP can be considered for suitable snack and dry food packaging applications where a printable outer film and heat-sealable inner layer are required.

Flexible Packaging Bags

The roll film can be converted into flexible bags where BOPP provides the outer packaging surface and CPP provides the sealing layer.

Pouch Packaging

BOPP/CPP can be used for suitable pouch structures depending on the pouch design, filling process and sealing requirements.

Consumer Product Packaging

The combination of BOPP appearance and CPP sealing performance makes the structure suitable for selected consumer packaging projects.

Other Flexible Packaging Applications

Depending on the film grade and final specifications, BOPP/CPP can be evaluated for other flexible packaging applications requiring a clear outer layer and heat-sealable inner surface.

Printing and Converting

The BOPP outer layer can be selected for printed packaging applications. Printing requirements should be considered together with the film grade, surface treatment and selected printing technology.

After lamination, BOPP/CPP film can be supplied in roll form for further converting operations such as slitting, bag making and pouch production.

For customized printed film, buyers should provide artwork requirements, finished package dimensions and information about the intended converting process when requesting a quotation.

Custom BOPP/CPP Laminated Film

Packaging manufacturers may require different specifications depending on their equipment and finished packaging design. ZXCOOL can discuss customized BOPP/CPP laminated film requirements for B2B projects.

Customization	Available Options
Film Structure	BOPP / CPP
Film Thickness	Customized according to application requirements
Film Width	Customized according to production requirements
Roll Length	Customized according to order requirements
Printing	Custom printing according to packaging design
Roll Packaging	Customized according to shipping and production requirements

What Information Should You Provide When Requesting a Quote?

Providing the intended packaging application helps determine whether BOPP/CPP is suitable and which film specification should be considered.

• Packaging application
• Finished bag or pouch dimensions
• Required film width
• Required total thickness
• Required roll length
• Printing requirements
• Sealing method
• Packaging machine information
• Estimated order quantity

For projects with specific sealing requirements, information about the sealing temperature and packaging equipment can also be useful when evaluating the appropriate CPP grade.

Frequently Asked Questions

What is BOPP/CPP laminated film?

BOPP/CPP laminated film is a two-layer flexible packaging structure consisting of BOPP as the outer layer and CPP as the inner layer. BOPP contributes clarity and stiffness, while CPP provides flexibility and heat-sealing performance.

What does CPP stand for?

CPP stands for Cast Polypropylene. It is a polypropylene film commonly used as a heat-sealable layer in flexible packaging structures.

Why is CPP used as the inner layer?

CPP can provide a heat-sealable and flexible inner surface, making it suitable for packaging processes that require the film to be sealed into bags or pouches.

Is BOPP/CPP heat sealable?

Yes. The CPP inner layer provides the heat-sealing function when the selected film grade and sealing conditions are appropriate for the packaging process.

What is the difference between BOPP/CPP and BOPP/PE?

The main difference is the inner sealing layer. BOPP/CPP uses CPP, while BOPP/PE uses PE. Both structures use BOPP as the outer layer, but their sealing characteristics and material combinations are different.

Can BOPP/CPP be used for printed packaging?

Yes. The BOPP outer layer can be used for packaging graphics and customized printing when the selected film and printing process are compatible.

Can BOPP/CPP laminated film be customized?

Yes. Thickness, width, roll length and printing can be customized according to the packaging application and production requirements.

Request a Quote for BOPP/CPP Laminated Film

If you are sourcing BOPP/CPP laminated film for flexible packaging production, send ZXCOOL your required structure, film thickness, width, roll length, printing requirements and intended application.

For a more accurate recommendation, you can also provide your packaging machine, sealing method and finished bag or pouch specifications.

Contact ZXCOOL to discuss your BOPP/CPP laminated film requirements and request a customized quotation.