A New Breakthrough for TPE Materials in the Toy Industry: A Case Study of the ER35TH-WJGZ Toy Doll
Time of issue:2026-03-06
I. Case Background and Customer Requirements
The customer, a toy manufacturer, plans to produce a batch of themed toy figures with intricate shapes and richly detailed features. The customer has specified clear requirements for the materials:
Hardness range: 35–40 Shore A, ensuring the doll has a moderately soft touch.
Processing Performance: Excellent moldability ensures thorough filling of complex molds, guaranteeing perfect reproduction of doll details.
Cost Control: Under the premise of meeting performance requirements, seek material solutions that are more cost-effective.
II. Problem Analysis and Material Selection
Based on customer needs, the technical team conducted an analysis:
1. Hardness Matching: The hardness range specified by the customer falls within the range of the company’s existing standard grades.
2. Liquidity is key: Toy dolls have complex structures, so the materials used must exhibit high liquidity to enable rapid mold filling, accurately replicate fine textures, and minimize injection molding defects.
3. Plan Development: The team decided to develop and upgrade the material based on the previously successful and similarly hard **ER30TH** grade. The goal is to create a new material with slightly higher hardness, improved fluidity, and excellent overall performance.
III. Solution: ER35TH-WJGZ High-Flowability TPR Material
In response to the above-mentioned requirements, we have successfully developed and recommended the TPR (thermoplastic rubber) material under the brand name **ER35TH-WJGZ**. The core advantages of this material are:
Precise hardness control: With a hardness of 38 Shore A, it fully meets the customer’s requirement of 35-40A, providing an ideal hand feel.
Exceptional high flowability: A melt index as high as 32 g/10 min (2.16 kg, 190℃) ensures extremely high injection molding efficiency and enables perfect shaping of intricate details in complex doll designs.
Excellent mechanical properties: tensile strength of 2 MPa, elongation at break of 550%, and tear strength of 16 kN/m, ensuring the durability of the toy doll.
Excellent formability: The material has a wide processing window, is easy to mold, and boasts a high yield rate.
IV. Implementation Process and Outcomes
1. Sample Comparison: We provided the customer with simultaneous trial molds comparing the original grade ER30TH and the newly developed ER35TH-WJGZ.
2. Performance Verification: The trial mold results confirm that ER35TH-WJGZ exhibits superior flowability and delivers excellent filling performance. The details of the figurine—such as facial expressions and clothing textures—are significantly clearer and more sharply defined.
3. Achieving the Goal: The ER35TH-WJGZ not only fully meets the customer’s requirements for hardness and molding performance, but its high processing efficiency also helps reduce production cycle costs, achieving a dual optimization of both performance and cost. The customer is extremely satisfied with the trial results.
V. Conclusion
In this case, by developing the highly fluid TPR material ER35TH-WJGZ, we successfully addressed the customer’s comprehensive requirements—namely, material hardness, detail fidelity, and cost-effectiveness—when producing complex-structured toy dolls. Thanks to its physical properties—high fluidity, moderate hardness, and ease of processing—ER35TH-WJGZ has become an ideal choice for applications involving such toy dolls, demonstrating the critical value of targeted material development in meeting specific market demands.
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ADD: Huangxi Industrial Park, Shiwan Town, Boluo County, Huizhou City, Guangdong Province，China