I. Basic Product Information

1. Product Model ER48A-GEF
2. Product Introduction A fast-forming, good-handfeel TPE/TPR modified material that combines excellent processing performance with superior user experience, making it ideal for developing injection-molded products with high performance requirements.

 

II. Comparison of Core Physical Property Parameters for Test Materials in Items 2 and 3

III. Application Scenarios

1. Application Cases Golf grip
2. Case Description Golf club grips have stringent requirements for both the machinability and performance of the materials used, and must meet: High liquidity, fast forming production requirements, while also ensuring the product surface... Comfortable to the touch Enhance the user’s grip experience.

IV. In-depth Analysis of the Product Introduction Process and Parameters

For this golf club grip project development, the core requirements focus on: High liquidity, rapid shaping, comfortable feel The three core points must be addressed simultaneously, while strictly controlling mass-production costs to achieve a dual balance between performance and cost. Based on the requirements, the technical team precisely selected three TPE materials for preliminary testing and conducted targeted analyses by examining their key physical properties. The specific process is as follows:

Test material model 1: ES48D-13   Shortcomings in core parameters: The hardness is only 43 ± 5 shore A, significantly lower than the recommended range for basic grip support required for golf grips; the melt index is 10 ± 7 g/10 min, indicating a relatively low flowability that cannot keep pace with the production rhythm of efficient injection molding. Test results: NG

Core Failure Analysis: From the perspective of usage performance, low hardness directly results in a soft grip feel, failing to provide sufficient gripping support during golf swings. Under stress, the handle is prone to deformation, thus failing to meet the end-product’s usage standards. From the perspective of processing performance, poor flowability significantly extends the injection molding cycle, reducing production efficiency and increasing per-unit production costs. Both core parameters fail to meet the project requirements and are therefore directly rejected.

Test specimen model No. 2: ES50D-07   Core parameter advantages: Hardness of 52 ± 5 Shore A, closely matching the hardness requirements for golf club grips; tear strength of 20 ± 4 kN/m, demonstrating the best durability among the three materials. Overall, its mechanical performance parameters are well-balanced, fully meeting the basic usage requirements for grips. Core parameter shortcomings: Melt flow index is only 4 ± 3 g/10 min, resulting in poor fluidity and making it unable to meet customers’ production capacity demands for mass manufacturing. Test results: NG

Core Analysis of Failure: Although this material basically meets the required mechanical performance standards, its insufficient flowability directly limits molding efficiency. Coupled with the relatively high raw material procurement costs of the material itself, introducing it into mass production would simultaneously increase both manufacturing and material costs, ultimately driving up the final product price and significantly undermining the product’s market competitiveness. This fails to meet the customer’s core requirement for cost control, and thus the material was not selected.

Test material model No. 3: ER48A-GEF   Precise Matching of Core Parameters: Hardness of 55–57 Shore A perfectly meets the grip-support requirements of golf club handles, ensuring both a soft and comfortable feel while providing sufficient support to prevent deformation during swings. The melt index of 40/2.16 kg at 190℃ offers ultra-high fluidity, making it ideally suited for rapid injection molding at 200℃, significantly boosting production efficiency and reducing per-unit processing costs. Its ability to bond with PP/PE materials also opens up new possibilities for subsequent composite processing, accommodating a wider range of process requirements. Test results: Customer confirmed OK.

Core Analysis for Success: The core physical property parameters of ER48A-GEF align closely with the project requirements for golf club grips. Its hardness parameter strikes a balance between grip comfort and support, while its high flowability matches the production demands for efficient molding. Meanwhile, the material cost remains within a reasonable range acceptable to the customer, thus achieving... Performance, processing performance, and production cost Triple balance achieved. After testing, the product’s molding efficiency, surface feel, and actual durability in use all met the customer’s established standards, successfully passing the tests and entering the mass-production phase.

V. Notes

The ER48A-GEF can be custom-modified and adjusted in core properties such as hardness, flowability, and surface feel to meet the specific product requirements of customers, fully satisfying the development and production needs of various handle-type products.