What are PC Plastic Raw Materials

Today, as plastic products move towards high-end, functional and environmentally friendly, transparent and high-performance pc plastic raw material is becoming an important basic material in the global packaging and daily chemical industries. Covestro PC WB1239 is a high-viscosity transparent polycarbonate specially developed for blow molding, injection molding and extrusion applications. It is suitable for food contact scenarios and provides an ideal solution for customers with high requirements for transparency, impact toughness and thermal stability.

01 | Core highlights of the material: Transparent high viscosity, branched structure achieves differentiated performance

PC WB1239 features Covestro's unique branched sub-structure, which enables it to maintain high transparency while having excellent molding stability and mechanical properties. The high viscosity property enables it to exhibit excellent wall thickness uniformity and puncture resistance in the blow molding process, solving the pain points of traditional pc plastic raw material bottle bodies such as easy cracking and stress cracking.

Meanwhile, as a food contact grade material, this model complies with the major global food packaging regulations and is suitable for scenarios where baby and children's products, water bottles, beverage containers, daily chemical bottles and cans, etc. come into direct contact with food or the human body.

02 | Application Direction: Specifically designed for high-value transparent bottle bodies and functional packaging

WB1239 pc plastic raw material is not only applicable to general consumer goods, but also particularly suitable for the following high-value-added scenarios:

  ・High-transparency drinking water bottles and kettles

  ・Baby bottles and children's water cups

  ・Personal care and high-end daily chemical packaging (such as shampoo and perfume bottles)

  ・Health supplement shells, food storage tanks

  ・Multi-layer co-extruded functional packaging structure base material

Especially in bottle products that require optical-grade light transmittance, as well as impact resistance and thermal stability, PC WB1239 offers an industry-leading solution.

03 | Technical Performance Analysis of PC Plastic Raw Materials

Looking for the full datasheet? Contact us for more technical information.

04 | Compatibility of forming processes: Three-process compatibility, meeting diverse production requirements

WB1239 supports three mainstream processing methods: injection molding, extrusion molding and blow molding. Among them, it performs particularly well in blow molding for bottle making. The high-viscosity formula ensures a stable molding cycle, and the products are less likely to have processing defects such as shrinkage marks and bubbling.

For mold structures that use multi-cavity molds or require high surface finish and high uniformity, WB1239 also demonstrates excellent mold flow characteristics and thermal stability, significantly reducing mold maintenance costs.

05 | Innovation and Industry Competitive Advantage: A Dual Balance of Functionality and Aesthetics

The branching PC technology path represented by WB1239 PC plastic raw materials is a breakthrough by Covestro in the performance bottleneck of traditional linear structure PC. While ensuring rigidity and transparency, it has brought about higher impact buffering capacity and low-temperature ductility through microstructure innovation, making its products have higher safety redundancy in practical applications.

Compared with ordinary transparent PC, WB1239 offers:

  ・Higher shock tolerance threshold
  ・Lower molding internal stress
  ・Stronger gas barrier properties (such as O₂, CO₂)
  ・Better color compatibility and surface coating adaptability

This makes it particularly competitive in high-end packaging, cross-seasonal storage, and markets with strict international regulatory requirements.

06 | Customer Feedback: Typical Evaluations from transparent bottle customers

We use WB1239 to blow mold children's water bottles. Not only do they have high color saturation, but they also won't break when dropped, truly achieving "transparent safety".
- Purchasing Manager of a baby and maternal products brand from Eastern Europe

Compared with the PC plastic raw materials we used before, the bottle body of PC WB1239 has much less thermal deformation, is less likely to become brittle after refrigeration, and customer satisfaction has significantly improved.
-- Engineering Director of the Daily Chemical Packaging Factory in the Middle East Region

07 | Frequently Asked Questions (FAQ)

Q1: Is WB1239 suitable for hot-filled products?
A: It has an excellent heat deflection temperature and is pressure-free during short-term hot filling (<145°C), but it is recommended to conduct specific application tests.

Q2: Is the material recyclable?
A: As pure PC raw material, it can enter the PC recycling system, which is in line with the sustainable development trend.

Q3: How does WB1239 perform in injection molding applications?
A: Although it is an optimized version for blow molding, it also has good adaptability in injection molding and is particularly suitable for thick-walled transparent parts.

Q4: Is the dual-color molding process of blow molding and injection molding supported?
A: Supported. WB1239 has excellent interfacial fusion and thermal stability, making it suitable for two-color/composite processes.

08 | Our advantages: A reliable global foreign trade supply partner

As a seasoned international supplier of PC plastic raw materials, we not only offer direct purchase of genuine products from the original factory, but also provide global customers with

  ・Complete material technical support (data sheets, molding suggestions, sample applications, etc.);
  ・Fast and stable international logistics;
  ・Flexible MOQ and multi-currency settlement services;
  ・We can provide small-batch sampling, customized color and compounding solution support
  ・Support customized labels and neutral packaging to help customers build their own brands.

We are well aware that "materials are just the beginning; service is the foundation of long-term cooperation." Choosing us means choosing a procurement path that is worry-free, time-saving and cost-effective.

Contact us at 📩 to obtain samples and technical specifications and explore the infinite possibilities of transparent pc plastic raw material in the new era of packaging together.

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