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Hogar » Productos » Industria » 1*1 PP and TPU Material Hot Runner LKM808E Mold Steel 738H Steel Polished Cavity Plastic Soft Toy over Mold

1*1 PP and TPU Material Hot Runner LKM808E Mold Steel 738H Steel Polished Cavity Plastic Soft Toy over Mold

This is a high-precision 1×1 single-cavity overmolding injection mold, purpose-built for manufacturing TPU soft plastic toys using the overmolding process. Featuring a hot runner system, LKM808E standard mold base, and premium 738H pre-hardened steel with polished cavity finish, this mold combines the rigidity of a hard plastic core with the soft, tactile feel of TPU. It is optimized for the complex geometries and hygiene requirements of children’s toys, delivering safe, durable, and visually appealing products for the toy industry.
 
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  • 19164

  • YIXUN mold

  • 8480419090

This is a high-precision 1×1 single-cavity overmolding injection mold, purpose-built for manufacturing TPU soft plastic toys using the overmolding process. Featuring a hot runner system, LKM808E standard mold base, and premium 738H pre-hardened steel with polished cavity finish, this mold combines the rigidity of a hard plastic core with the soft, tactile feel of TPU. It is optimized for the complex geometries and hygiene requirements of children’s toys, delivering safe, durable, and visually appealing products for the toy industry.

Mold Technical Specifications

Item Specification
Mold Configuration 1×1 single-cavity overmolding design
Runner System Hot runner injection for TPU overmold layer
Molding Material TPU (thermoplastic polyurethane) soft-touch overmold + hard plastic core (PP/ABS)
Mold Base LKM808E standard mold base
Cavity Steel 738H pre-hardened mold steel
Cavity Finish High-quality polishing for soft toy surface clarity and smoothness
Process Type Two-shot overmolding / insert molding for soft toys
Application Children’s soft toys, tactile play figures, and overmolded plastic toys
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Key Design & Performance Advantages

1. 1×1 Single-Cavity Layout for Complex Toy Geometry

The single-cavity design enables full process control over intricate toy shapes:
  • Precision detail replication: Ideal for capturing fine features like facial expressions, textures, and contours common in soft toys.

  • Reduced defects: Eliminates flow imbalance, ensuring uniform TPU layer thickness and core alignment.

  • Flexible production: Perfect for small-to-medium batch runs of custom or niche toy designs.

2. Hot Runner System for TPU Overmolding

The hot runner system is critical for successful TPU overmolding:
  • Consistent melt flow: Maintains uniform TPU temperature, preventing material degradation or discoloration during the soft layer injection.

  • Eliminates cold runner waste: Reduces scrap and ensures the TPU material stays clean and hygienic, essential for children’s toys.

  • Balanced pressure delivery: Ensures complete filling of the mold cavity, even around the hard plastic core, avoiding air traps or incomplete coverage.

3. LKM808E Mold Base + 738H Cavity Steel: Durability & Stability

This combination ensures long-term mold performance:
  • LKM808E standard base: A robust, industry-standard mold base that provides consistent alignment and structural stability during repeated molding cycles.

  • 738H steel cavity: Pre-hardened to HRC32–36, offering excellent toughness, wear resistance, and polishability. It withstands the abrasion of TPU injection while maintaining precise cavity geometry.

  • Long service life: The steel’s uniform hardness prevents deformation, ensuring the mold retains its shape and surface finish over thousands of shots.

4. Polished Cavity Finish for Premium Soft Toy Appearance

The high-quality polished cavity surface delivers key benefits for TPU toys:
  • Smooth, burr-free surfaces: Eliminates sharp edges or rough spots, critical for child safety in soft toys.

  • Enhanced visual clarity: Creates a clean, uniform surface on the TPU layer, showcasing colors and designs vividly.

  • Easy demolding: The polished finish reduces friction, preventing the soft TPU part from sticking or tearing during ejection.

5. Overmolding Process for Soft Toys

This mold is engineered specifically for the two-step overmolding workflow:
  1. First shot (hard core): A rigid plastic core (PP/ABS) is injected into the mold, forming the structural base of the toy.

  2. Second shot (TPU overmold): The core is repositioned, and TPU is injected over it, creating a soft, grippy, and tactile outer layer.

  • The design ensures strong adhesion between the core and TPU layer, preventing peeling or delamination with repeated use.

  • Optimized venting and cooling eliminate common TPU defects like bubbles, sink marks, or warpage, resulting in a safe, durable toy.


Typical Applications

This overmold toy mold is ideal for producing:
  • Children’s soft tactile play figures

  • Overmolded plastic animal toys

  • Ergonomic toy handles and interactive play parts

  • Educational sensory toys with soft-touch surfaces

  • Custom promotional overmolded toys


Conclusion

The 1×1 cavity TPU overmold injection mold is a specialized solution for manufacturing high-quality soft plastic toys. With its LKM808E base, 738H polished cavity, hot runner system, and overmolding process optimization, it delivers safe, durable, and visually appealing toys that meet the strict standards of the children’s product industry.


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