PVC-Specific Resin: Applications in Transparent Sheets & Injection Molding

PVC-specific resin is a specially optimized category of polyvinyl chloride resin. With its excellent transparency, processability, and cost-effectiveness, it has achieved widespread application in multiple fields. Its core uses are concentrated in two main areas: transparent sheet production and injection-molded products, covering packaging, construction, electronics, automotive, and many other sectors closely related to production and daily life. Currently, the industry is undergoing structural adjustments, and application scenarios are continuously being optimized and upgraded.

Transparent Sheet Applications (I): Core Applications in Packaging and Related Fields

Transparent sheets produced from PVC-specific resin are a preferred raw material in sheet processing due to their excellent light transmittance, color matching without loss of transparency, and ease of processing. Their processing methods are similar to acrylic, making them compatible with existing acrylic processing equipment.

They also have good ink affinity, facilitating subsequent processing such as printing and embossing. Furthermore, they can be vacuum-formed to achieve diverse shapes, complying with RoHS, REACH, and other relevant compliance requirements.

These transparent sheets, after being rolled and processed, can be made into rigid and semi-rigid packaging sheets and boards, widely used in food, pharmaceutical, and electronic product packaging. The food packaging sector accounts for the largest share, producing fresh produce trays, baking display boxes, etc.

In the pharmaceutical field, they are used for sterilization packaging of medical devices, ensuring packaging safety due to their resistance to weak acids and alkalis.

Transparent Sheet Applications (II): Architectural Decoration and Lining Rigid Film Uses

In the construction and decoration sector, these transparent sheets can be processed into flooring materials, offering advantages such as wear resistance and easy cleaning, suitable for homes and offices. Lining rigid films are also an important application; common candy wrappers and cigarette packaging films use them as raw materials, offering excellent barrier properties and flexibility, protecting the product inside while enhancing the packaging's aesthetics.

According to industry data, in 2023, domestic PVC blister sheet production reached 850,000 tons, with consumption of approximately 780,000 tons. The Yangtze River Delta and Pearl River Delta regions account for over 60% of the national production capacity. Leading companies are improving product quality through technological upgrades, driving demand growth for high-transparency, anti-static, and other specialty sheets.

Injection Molding Applications (I): Functional Products in Piping and Electrical Industries

Besides roll forming, PVC resin can also be injection molded into a variety of functional products, fully leveraging its advantages in chemical resistance, electrical insulation, and flame retardancy. In the piping and fluid control field, it can be used to manufacture joints, valves, and other components, suitable for industrial pipelines and civil water supply and drainage systems, ensuring the sealing of fluid transport. 

In electrical components, its excellent electrical insulation properties allow for the production of terminals, insulating housings, etc., used in various electrical equipment to meet the insulation requirements of the electronics industry.

Injection Molding Applications (II): Automotive, Container, and Industry Environmental Upgrades

In the automotive and container manufacturing sector, PVC resin injection molded products also play an important role. They can be used to manufacture automotive interior parts, pipe joints, and other automotive components, balancing lightweight and durability to meet the production needs of the automotive industry.

Various small containers can be used for home storage and industrial parts storage, replacing some metal and glass containers due to their convenient molding and reasonable cost, reducing production and usage costs.

Currently, with increasingly stringent environmental policies, the industry is accelerating environmental upgrades. Calcium-zinc stabilizers are gradually replacing traditional lead salt systems, the proportion of recyclable PVC materials has increased to 35%, and research and development of bio-based PVC continues to advance. It is estimated that biodegradable modified products will occupy 15% of the market share by 2025.

From the current industry perspective, the domestic PVC market in 2025 is characterized by "high supply, high inventory, and weak demand." Prices have fallen to historical lows, and many chlor-alkali companies have experienced losses.

However, the operating rate of flexible products, represented by PVC film, remains high, demonstrating strong demand resilience. In 2026, there is no new PVC production capacity in China, and overseas capacity continues to withdraw. my country's PVC exports are expected to increase, especially with exports to India already accounting for 41%, becoming an important support for export growth.

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