Liquid Silicone Rubber Molding

Silicone Co-injection molding

Silicone compression molding

Co-injection dripping molding(Epoxy molding)


Co-injection dripping molding(Epoxy molding) allows two different silicone material(solid silicone rubber and liquid silicone rubber) to be combined into a single products stream. Liquid silicone’s colors can be adjusted according to different customers, and the colors will do nothing to the qualities of rockery liquid silicone. When in use, we need to mix the two parts evenly according to a certain proportion first , and then carry on the vacuum processing .This specialized process can be used to enhance products color performance and reduce cost without any penalty to cycle time or production volume. It is perfect customize solutions for difficult complex multi-colors silicone products. Depending on the materials selected and the application, Co-injection can be used to improve production efficiency and allow for greater design flexibility. Co-injection dripping molding can be used for a wide range of applications across any industry including Consumer Electronic(Cute Iphone12 silicone case, air pod case,I pad case),Beauty products(cosmetic bag,brush ).Promotional gifts(Colorful products include:Key chain,purse bag, fashion accessories and gifts),baby products(colorful baby teether,colorful baby toys)

As the pioneer and industry leader in Co-injection dripping molding Technology, We has extensive co-injection science knowledge and the most application experience.

Characteristics Of Co-injection dripping molding

Co-injection dripping molding(Epoxy molding) will use two different silicone material(solid silicone rubber and liquid silicone rubber) to be combined into a single products stream. Liquid silicone’s colors can be adjusted according to different customers, and the colors will do nothing to the qualities of rockery liquid silicone. It is widely application to the more multicolored silicone products. The colors and pattern can be get from 2-12 colors and with different pattern. It will be widely use for the licensed products with the character’s. Especially for the games,Ip’s/Movie’s/ Animation’s/ Character’s peripheral cute products and promotional gifts.

Co-injection dripping molding products Design And Materials

Multicolored silicone products will use the co-injection dripping molding process. When we have the Multicolored silicone products. We have to consider the products designed from the beginning to be manufacturable. By making the right material, color, durometer, dimension, and tolerance choices. To avoid the liquid silicone peel off . Also the OEMs can develop molded Multicolored silicone products that can be reliably manufactured in large volume — while minimizing scrap rates and their losses.So, There are a few things to consider when deciding on a silicone to use for manufacturing. These include type of silicone (liquid silicone rubber or high consistency rubber), durometer (hardness or shore ), and even colors,gaps for the colors. Each of these can have an impact on manufacturability. Z.S.R group we have the experienced Engineer, we will offer our professional select and suggestion from material form,design that fits with the Multicolored silicone products made.

Co-injection dripping molding Tooling & Co-injection dripping molding

Co-injection dripping molding tooling

In Z.S.R Group, we own our in-house silicone tooling workshop allows us to react quickly to customers changing requirements. Customized CNC tooling and EDM machine can fasten the Multi-color products production process.

And the co-injection dripping molding tooling material depend on your products needs:

  • Aluminum usually used for make the samples or prototype. Price is low.
  • Copper can be used for make the samples and mass production. Choose the Copper tooling or steel tooling depend on the products quality of the parting line. The copper tooling mass production rate is better than steel tooling. The price is in middle area
  • Steel can be used for make the samples and mass production. Choose the Copper tooling or steel tooling depend on the products quality of the parting line. The steel tooling mass production rate is less than steel tooling. But the parting line is better. And the precision is better. The price is high.

Co-injection dripping molding process:

  • Dripping the liquid silicone material on the tooling with the dripping machine.
  • Then heated the tooling and let the liquid silicone material is heated to solidify it.
  • Then put the solid silicone rubber into the tooling. Silicone is vulcanized through this process and a part is formed. While this molding process itself is somewhat slower than injection molding, it does yield quick turns on prototype or R&D parts. It also has less costly tooling upfront.

The co-injection dripping molding process most cost effective production method is to create high multiple cavity tooling also.

Co-injection dripping molding Silicone Rubber Products Production

More than 10 years, Z.S.R Group offer co-injection dripping (epoxy) molding to the Brands/Wholesalers/Retailers for consumer goods. As we own 6 sets of the co-injection dripping (epoxy) molding lines.

As the pioneer and industry leader in Co-injection dripping molding Technology, We has extensive co-injection science knowledge and the most application experience.

The world’s leading brands(we can not show here because of the NDA)and Licensee (such as Line Friends,Kakao Friends,Disney,Universal Studio (NBC Universal), Hasbro,Mcdonald’s,Hello Kitty,Pokemon,Winnie the Pooh,Mickey mouse,Star wars, Anpanman/アンパンマン, Jump, Mario, Marvel, ASTRO BOY, Miffy, Snoopy,Rilakkuma,Doraemon, Minions, Starbucks, P&G, Cocacola, SpongeBob , Warner Bros. , MGA Entertainment, Olympic, Forbidden City Culture,etc)  rely on our Co-injection dripping molding Technology to deliver solutions that outperform.We have help these licensee, Entertainment Culture,licensed,Advertising and Marketing companies make more than 1000 models Ip’s/Movie’s/ Animation’s/ Character’s peripheral cute products and promotional gifts.  Please Contact us with your application today.

we’ve been manufacturing a wide range of silicone products, mainly focused on customized silicone consumer products. Our one-stop silicone products manufacturing factory operates at a high capacity and is focused on producing your personalized silicone products to meet your scalability requirements。

Cooperate with LineFriends: Pencil case, Hand Mirror,Cup Coaster,Bags,Lids, 3D keyring, Name tags,Silicone pouch, airpod pro case, phone case,mobile phone stand, phone holder, Silicone cup and cover, Silicone purse bag,Silicone multi-colored pouch etc.

Cooperate with KakaoFriends:Pencil case, Bags,Lids,night light, Airpod case, phone cases, luggage tag, 3D Models etc.

Benefits Of Co-injection dripping molding

Design: Multi-colored. You can get 12 colors in one product without any printed.

Flexibility: Can make the 3D show with the products.

Attraction: More attraction and cute as gifts for the kids and Women

Industries And Applications

  1. Home&housewares & Appliances ( Kitchen & dinning&table & Drink ware &household.etc.)
  2. Baby & Toys ( Baby care & Baby Feeding & Baby Toy & kids learning toy etc)
  3. Health & Beauty & Personal Care (Oral care & Beauty tools/Accessories & hair care ,etc.)
  4. Stationery & Office Products(Arts & Crafts& School products & Office products etc. )
  5. Sports & Outdoor & Garden ( Sports and fitness & Travelling & Outdoor portable etc. )
  6. Pets Supplies
  7. Electronic & Cell Phones Accessories ( Protective cover& Case, holder etc.)
  8. Smoking products
  9. Promotional products (Licensed products & Mascot & Gifts & Blind box products)

Co-injection dripping molding Silicone products Quality Standards

Material Standard: FDA and LFGB

Size and Tolerances:+/- 0.15 mm Tolerances or according to the 2D drawing request

Surface and Color:Check the surface to see if there is any damage, lack of glue, deformation, different color.Material overflow… and other UN-quality

Custom Co-injection dripping molding Solutions For Your Business

In Z.S.R Group, we work with your timeline and budgets for your multicolored silicone products. Our cost-effective prototypes can be populated in small production runs that align with your schedule. We work closely for achieving high-quality custom colorful silicone products for your company. Get in touch to learn more and order your custom multicolored silicone rubber products.