{"id":2162,"date":"2026-07-21T14:15:26","date_gmt":"2026-07-21T06:15:26","guid":{"rendered":"https:\/\/www.mold-mif.com\/?p=2162"},"modified":"2026-09-27T15:24:09","modified_gmt":"2026-09-27T07:24:09","slug":"two-color-injection-molded-comfort-grip-cup-handle","status":"publish","type":"post","link":"https:\/\/www.mold-mif.com\/zh\/two-color-injection-molded-comfort-grip-cup-handle\/","title":{"rendered":"Two-Color Injection Molded Comfort-Grip Cup Handle"},"content":{"rendered":"

A cup handle looks simple until two materials, assembly fit and daily handling all have to work together. The rigid portion must carry the load and hold its shape. The contact area should feel comfortable in the hand. Both materials also need to meet cleanly, without an obvious step, loose insert or secondary bonding operation.<\/p>\n

This pink handle uses a rigid PP structure with a soft-touch TPE area. It is produced through a two-material molding process for drinkware and everyday-use products. The design shows why the part structure, material pairing and tooling sequence need to be planned together before mold construction begins.<\/p>\n

\"Pink
The handle combines a rigid PP load-bearing structure with a localized TPE soft-touch section.<\/figcaption><\/figure>\n

Why Use PP and TPE in One Handle?<\/h2>\n

PP gives the handle its basic shape and structural support while keeping the part relatively light. TPE is placed where the user touches or grips the handle, adding a softer surface and more friction than the rigid substrate alone. The two materials do different jobs, so the design should not treat the TPE as decoration applied after the main part is complete.<\/p>\n

The interface between PP and TPE needs enough area and suitable geometry for stable retention. Material compatibility, surface texture, local thickness and the flow path of the second material all affect the finished bond. Where necessary, mechanical locking features can be added to support the material interface rather than relying only on adhesion.<\/p>\n

\"Dual-material
The soft-touch area is integrated into the handle design while the rigid core carries the structural load.<\/figcaption><\/figure>\n

Tooling Has to Account for Two Molding Stages<\/h2>\n

In a two-color or overmolding process, the first shot creates the rigid substrate and the second shot adds the soft material. The tool and transfer method must keep the first component located accurately before the second cavity fills. If the substrate shifts, the soft-touch boundary can become uneven or the second material can flash into areas that should remain clean.<\/p>\n

Gate position, venting and shutoff design matter at both stages. The PP shot needs to fill the full handle without creating avoidable deformation. The TPE shot needs to reach the end of its contact area while maintaining a controlled edge around the visible interface. Early DFM review should also check draft, radii, wall transitions and ejection so that the part can leave the mold without marking its gripping surfaces.<\/p>\n