QINGDAO KINGCHUAN YUANRONG INTERNATIONAL TRADING CO., LTD.

Booth Number:N4/N4S13

Address: 77 Yixingji Road, Beian Subdistrict, Jimo District, Qingdao, Shandong, China

Website: https://www.kingchuanpackaging.com/

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company profile

KINGCHUAN was established and became known by serving the domestic market with plastic films. More than three decades of experience, in-depth knowledge of markets and materials, have enabled us to provide you with a wide range of high-quality plastic packaging films, including BOPP, BOPET, CPP, BOPA, PE films, metalized film, aluminum foils and all kinds of functional plastic films.

Application Industry

Packaging/Printing ,Packaging Films

Main Products

Packaging materials
- Plastic packaging materials
Innovative packaging raw materials
- Thin film

Product Information

Product Category： Thin film

Biaxially Oriented Polypropylene Film

Biaxially Oriented Polypropylene (BOPP) film is a versatile and high-performance plastic film manufactured through a process of stretching polypropylene granules in two perpendicular directions: machine direction (MD) and transverse direction (TD). This biaxial orientation process is the key to unlocking a unique set of properties that make BOPP one of the most widely used packaging materials globally. 一、Manufacturing Process 1. Extrusion: Polypropylene pellets are melted and extruded through a flat die to form a thick, primary sheet or cast film. 2. Orientation: This cast film is then heated above its glass transition temperature and stretched sequentially or simultaneously. It is first stretched in the machine direction (forward direction) and then in the transverse direction (across the web). This molecular-level stretching aligns the polymer chains, creating a dense molecular network. 3. Heat Setting & Winding: The stretched film is heat-set under tension to anneal it, locking in the oriented structure and ensuring dimensional stability before being wound onto rolls. 二、Key Properties and Advantages The biaxial orientation process imparts exceptional characteristics to the film: 1.High Tensile Strength and Stiffness: The aligned polymer chains significantly increase the film's mechanical strength, puncture resistance, and durability, making it tough to handle during high-speed packaging processes. 2.Excellent Clarity and Gloss: BOPP film is inherently clear with a high-gloss surface, providing an attractive, premium appearance for retail packaging that enhances product visibility. 3.Superior Moisture Barrier: It offers an outstanding barrier against water vapor, protecting products from humidity and moisture, which is crucial for food preservation. 4.Chemical Resistance: It is resistant to most oils, greases, and solvents. 5.Dimensional Stability: The heat-setting process minimizes shrinkage and maintains the film's shape and size under varying temperatures. Versatile Surface Properties: BOPP can be easily coated, co-extruded, or corona-treated to improve its sealability, printability, and gas barrier properties. Metallic layers can be added for a high-barrier, aesthetic metallic finish. 三、Applications BOPP film's versatility makes it suitable for a vast range of applications: 1.Flexible Packaging: The largest application segment. It is used for packaging snacks, biscuits, confectionery, frozen foods, dried foods, and pasta. It is often used in laminated structures with other films like polyethylene (PE) to create heat-sealable packs. 2.Labels and Adhesive Tapes: Its strength and clarity make it ideal for pressure-sensitive labels (e.g., clear drink bottles) and as a backing material for packaging and stationery tapes. 3.Industrial Uses: BOPP is used as a dielectric film in capacitors and in graphic arts. 4.Specialty Films: This includes synthetic paper, pearlized films for aesthetics, and white opaque films.
Product Category： Thin film

Biaxially Oriented Polyester Film

Biaxially Oriented Polyethylene Terephthalate (BOPET) film is a high-performance polyester film known for its exceptional combination of properties, making it one of the most versatile and widely used plastic films globally. Produced by stretching a PET polymer sheet in two perpendicular directions (machine and transverse), this orientation process aligns the polymer chains, resulting in a material with superior mechanical, thermal, optical, and barrier characteristics compared to non-oriented films. 一、Fundamental Properties and Characteristics： The unique manufacturing process imparts BOPET with a remarkable portfolio of properties: 1. Excellent Mechanical Properties: BOPET boasts high tensile strength, stiffness, and toughness. It is highly resistant to tearing and puncture, ensuring durability in demanding applications. 2. Outstanding Dimensional Stability: The film exhibits minimal shrinkage or expansion under varying temperatures and humidity levels, which is crucial for precision applications like electronics and printing. 3. Superior Optical Clarity and Gloss: BOPET is naturally crystal clear with a high-gloss surface, making it ideal for packaging where product visibility is essential. It can also be easily metallized or matte-finished. 4. High Thermal Resistance: It has a wide service temperature range, typically from -60°C to 150°C, and can withstand brief exposure to soldering iron temperatures, enabling its use in electrical insulation. 5. Good Barrier Properties: While not as high-barrier as some specialty films, BOPET provides a moderate barrier to gases (like O2 and CO2) and moisture vapor (H2O). This barrier is significantly enhanced when the film is metallized, coated (e.g., with PVDC or SIO<sub>x</sub>), or laminated to other materials like polyethylene (PE) or polypropylene (PP). 6. Excellent Electrical Insulation: Its high dielectric strength and volume resistivity make it a premier material for electrical and capacitor applications. 7. Chemical Resistance: BOPET is resistant to most oils, greases, and solvents, though it can be attacked by strong acids and alkalis. 8. Safety and Regulatory Compliance: It is generally considered safe, odorless, and compliant with international regulations for direct and indirect food contact. 二、Versatile Applications Across Industries 1. Flexible Packaging (Largest Market) 2. Industrial and Specialty Applications 3. Emerging Technologies In conclusion, BOPET film is a foundational material of the modern industrial and consumer world. Its unique synergy of strength, stability, clarity, and versatility, derived from its biaxial orientation process, ensures its continued dominance and drives innovation in packaging, industrial, and high-tech sectors.
Product Category： Thin film

Cast Polypropylene Film

Cast Polypropylene (CPP) film is a versatile, non-oriented polypropylene film produced by the cast extrusion process, characterized by excellent transparency, gloss, heat sealability, and toughness, making it widely used in flexible packaging. Unlike BOPP films, CPP is softer and more flexible, with superior impact strength and a wide sealing window, suitable for high-speed packaging lines. It demonstrates good resistance to moisture, oils, and many chemicals, and certain grades such as retort CPP withstand sterilization up to 121°C. CPP films can be customized into general-purpose, metallizable, retort, anti-fog, or twist-wrap grades, serving diverse needs from food packaging (bakery, snacks, confectionery, frozen foods, ready meals) to pharmaceuticals, textiles, and consumer goods. They are also highly compatible with printing, lamination, and metallization, often laminated with BOPP or PET to combine barrier and aesthetic performance. Compared to PE and BOPP, CPP provides a balanced mix of clarity, seal strength, and versatility across thickness ranges, while being 100% recyclable within the polypropylene stream. With the rising demand for flexible, sustainable, and high-performance packaging, especially in food and pharmaceutical industries, CPP films continue to gain global market importance, particularly in Asia-Pacific, where growth in convenience foods and sustainability initiatives drive innovation in advanced CPP film grades.
Product Category： Thin film

Polyamide Film

Polyamide film, also known as nylon film or PA film, is a high-performance packaging material made from polyamide resins such as PA6 and PA66, characterized by its outstanding mechanical strength, puncture resistance, and abrasion durability, which make it superior to many conventional films like polyethylene or polypropylene; it also offers excellent optical clarity and gloss, allowing packaged goods to remain visible and attractive, while its wide operating temperature range ensures flexibility at low temperatures for frozen storage as well as stability under high-temperature sterilization in retort applications; in terms of barrier properties, PA film provides exceptional resistance to oxygen, aroma, and many organic solvents, thereby extending product shelf life, although its moisture barrier is moderate and often improved by lamination with PE, CPP, or EVOH layers; the film also shows excellent resistance to oils, fats, and a range of chemicals, and it remains tough and crack-resistant under stress, making it ideal for vacuum packaging of meat, cheese, and seafood, retort pouches for ready meals and pet food, pharmaceutical blister packs and sterile pouches, as well as protective packaging for industrial products and electronics; available in different grades such as PA6 for balanced performance, PA66 for higher heat resistance, and multilayer coextruded PA films tailored for specific requirements, nylon film can be easily processed by printing, lamination, and vacuum forming; compared with CPP it offers stronger puncture resistance and oxygen barrier, while CPP provides better sealing efficiency, and when used together both materials complement each other in advanced laminates; the advantages of PA film include strength, transparency, extended shelf life, processability, and recyclability in polyamide streams, making it both versatile and sustainable; as market trends push toward lightweight, recyclable, and bio-based packaging solutions, nylon film continues to play a vital role in food, pharmaceutical, and industrial packaging, especially in regions such as Asia-Pacific where demand for convenience foods and high-performance packaging is rapidly growing.
Product Category： Thin film

Aluminum Foil

Aluminum foil is a lightweight, versatile material produced by rolling aluminum into thin sheets, widely valued for its unique combination of physical and chemical properties. It offers excellent barrier performance against moisture, oxygen, light, microorganisms, and other contaminants, which makes it especially suitable for preserving freshness, flavor, and quality in food and pharmaceutical packaging. Its metallic surface is smooth, non-toxic, odorless, and resistant to grease, making it safe for direct contact with edible goods. Aluminum foil also demonstrates outstanding thermal conductivity, allowing for efficient heat transfer in cooking, baking, and insulation applications, while its electrical conductivity supports specialized uses in electronics and energy storage. With high ductility and flexibility, it can be easily formed, wrapped, laminated, or embossed, and it maintains durability without losing protective performance even at very thin gauges. Additionally, aluminum foil has reflective properties that provide effective heat and light shielding, making it useful in construction and insulation materials. It is compatible with a wide range of substrates such as paper and plastics, enabling the production of composite packaging solutions that combine strength, aesthetics, and functional protection. From an environmental perspective, aluminum foil is 100% recyclable without loss of quality, contributing to resource conservation and sustainable development. These attributes together give aluminum foil a broad scope of applications across food preservation, beverage packaging, pharmaceutical blister packs, household kitchen use, industrial insulation, electronic components, and decorative materials, making it an indispensable material in modern industries.
Product Category： Thin film

Biaxially Oriented Polypropylene Metallized Film

BOPP metallized film (Biaxially Oriented Polypropylene Metallized Film) is a versatile material that combines the high clarity, mechanical strength, and moisture resistance of BOPP with the excellent barrier and reflective properties of vacuum-deposited aluminum. It features low density and good stiffness, while maintaining flexibility and ease of processing, making it suitable for high-speed packaging lines. The metallization enhances oxygen, moisture, and light barrier performance, improves shelf life of packaged products, and provides a metallic appearance for decorative purposes. The film is also resistant to chemicals, has good heat sealability when combined with suitable layers, and offers dimensional stability under varying temperatures. Its electrical insulation properties make it valuable for capacitor production, while its lightweight, recyclable, and cost-effective nature supports sustainable applications. BOPP metallized film is widely used in flexible packaging, labeling, lamination, gift wrapping, and electronic components, balancing functionality, aesthetics, and environmental considerations.
Product Category： Thin film

Biaxially Oriented Polyethylene Metallized Film

Biaxially Oriented Polyethylene Metallized Film (BOPET Metallized Film) is a high-performance material widely recognized for its exceptional balance of mechanical strength, barrier properties, and visual appeal. Produced by stretching PET film in both machine and transverse directions and then applying a thin layer of aluminum by vacuum deposition, it achieves a unique combination of lightweight flexibility and metallic brilliance. The metallization layer enhances barrier performance against oxygen, water vapor, light, and aroma, making it ideal for protecting sensitive contents such as food, pharmaceuticals, and consumer goods. At the same time, the base PET substrate provides excellent tensile strength, tear resistance, dimensional stability, and heat resistance, ensuring reliable performance in demanding environments, including high-speed packaging and lamination processes. The film exhibits good adhesion to inks and adhesives, offering excellent printability and enabling high-quality graphic finishes. Its reflective surface not only improves aesthetic appeal but also contributes to light shielding and thermal insulation. Environmentally, BOPET metallized film is recyclable within polyester recovery streams, and its high strength allows for down-gauging, reducing material use without compromising functionality. Furthermore, the film resists chemicals, punctures, and abrasion, extending shelf life and ensuring product integrity during storage and transportation. With versatility in thickness and surface treatments, it can be tailored for specific applications such as flexible packaging, labels, decorative wrapping, insulation materials, and capacitor films. Overall, BOPET metallized film represents an advanced, multi-functional solution that combines durability, barrier protection, and visual impact in a cost-effective and sustainable way, meeting the needs of modern packaging and industrial markets.
Product Category： Thin film

Cast Polypropylene Metallized Film

Metallized Cast Polypropylene (CPP) Film is a high-performance flexible packaging material known for its excellent barrier properties, mechanical strength, and versatility. By combining the toughness and heat resistance of cast polypropylene with a thin layer of aluminum metallization, the film offers superior moisture, oxygen, and light barrier performance, which helps extend product shelf life and preserve quality. It features good clarity, high tensile strength, and outstanding dimensional stability, making it suitable for high-speed packaging processes. The film also provides excellent heat sealability, puncture resistance, and lamination compatibility with other substrates, enabling its use in diverse applications such as snack food packaging, bakery products, confectionery, agricultural goods, and pharmaceutical items. In addition, metallized CPP film exhibits strong resistance to grease, chemicals, and impact, while maintaining lightweight and cost-effective properties. Its reflective surface not only enhances aesthetic appeal for attractive product presentation but also contributes to UV protection. Environmentally, CPP metallized film is recyclable within polypropylene streams, supporting sustainable packaging initiatives. Owing to its balance of barrier, strength, processability, and cost efficiency, metallized CPP film has become a preferred choice across food, consumer goods, and industrial packaging markets.
Product Category： Thin film

Metallized Nylon Film

Metallized Nylon Film, also known as Metallized Polyamide (PA) Film, is a high-performance flexible packaging material that combines the inherent advantages of nylon with the enhanced barrier functionality of a thin aluminum metallization layer. The nylon base film provides outstanding mechanical strength, high tensile properties, excellent puncture resistance, and remarkable toughness, making it particularly suitable for applications that require durability and protection. Its good heat resistance allows it to withstand high-temperature processes such as boiling and retort sterilization, while its flexibility ensures excellent processability during high-speed packaging operations. The aluminum layer deposited through vacuum metallization significantly improves barrier performance against oxygen, moisture, and light, thereby maintaining product freshness, preventing oxidation, and extending shelf life. In addition to barrier and mechanical performance, metallized nylon film exhibits excellent chemical resistance and grease resistance, ensuring reliable protection for a wide range of products, including oily and aromatic goods. Its reflective metallic appearance not only enhances visual appeal for premium product presentation but also contributes to UV shielding, offering further protection to light-sensitive contents. The film maintains good transparency and dimensional stability, which supports lamination with other substrates such as polyethylene, polypropylene, or cast polypropylene, enabling the creation of multi-layer packaging structures tailored to specific functional requirements. Because of its balance of toughness, barrier strength, and visual appeal, metallized nylon film is widely used in food packaging such as vacuum-packed meat, seafood, dairy products, snacks, and baked goods, as well as in pharmaceuticals, medical supplies, cosmetics, and certain industrial applications. It is particularly preferred for vacuum and modified atmosphere packaging where strong puncture resistance and gas barrier properties are essential. Moreover, metallized nylon film supports high-quality printing and lamination processes, making it suitable for both protective and decorative packaging solutions. With its combination of strength, barrier properties, versatility, and premium aesthetics, metallized nylon film has become an ideal choice for advanced, high-value packaging markets worldwide.