Plastic closures can be manufactured in different ways including plastic injection forming and blow forming, however the most common manufacturing process is dip molding which uses a mandrel, or mold, dipped into molten plastic material. Read More…
Molded Devices, Inc. SellersvilleSellersville, PA | 800-398-2520
Molded Devices is an industry leader in plastic and metal coating with particular expertise in dip molding. From design to delivery our Sellersville, PA location, formerly US Plastic Coatings, can have many flexible PVC plastisol products delivered within a week. We have a thriving reputation for a quick turnaround, superior quality, and customer satisfaction.$$$
Precision Dip Coating LLCWaterbury, CT | 203-805-4564
Precision Dip Coating provides dip coating services for the manufacture of soft plastic parts such as cap plugs. hand grips, and more. Decorative and protective, our services are very cost effective and we have a proven track record for on time delivery and precise manufacturing. We can match any color you need, and offer services such as assembly, die cutting, packaging, and decorating.$$$
Carlisle Plastics Company, Inc.New Carlisle, OH | 937-845-9411
Carlisle Plastics is a dip molding plastics manufacturer offering end caps, plastisol paint masks, thread protectors, tube closures, protective caps and decorative caps.$$$
Rubber & Plastics CompanyAuburn Hills, MI | 800-482-1842
Rubber & Plastics Company has 50 years of experience in manufacturing dip molding with the materials, equipment and flexibility to rapidly prototype. We provide standard and custom designed high-temp paint masks, caps, grips and plugs.$$$
Innovative Coatings, Inc.Medway, MA | 508-533-6101
Innovative Coatings is a manufacturer of plastisol dip molding and fluidized bed powder coatings of epoxy, polyolefins, nylon and vinyl. Our dip coatings are of FDA-approved and biomedical grades.$$$
Texas Dip Molding & Coating, Inc.San Antonio, TX | 508-533-6101
Texas Dip Molding & Coating is known for our high quality custom coating that maximizes strength, hardness, flexibility and durability for parts designed and manufactured in any application.$$$
Plastic Closures Companies List
The mold is fully immersed into a molten polymer such as plastisol or PVC for a specific amount of time dependent on the desired thickness of the plastic. It is then removed slowly and allowed to harden. Heat treatment is used with some plastics in order to achieve the desired material results. When the plastic coating has fully solidified, it is removed from the mold and if necessary goes through further finishing techniques, although because of plastic's elastic properties, secondary processing is typically not needed. For plastic closure manufacturing, a mandrel is produced with the exact dimensions of a container, part or product requiring a seal, closure or plug and when dipped into the molten plastic produces an exact fit.
Industries such as chemical, photography, agricultural and packaging all use plastic closures for a number of applications. Common shapes of plastic plugs and plastic caps include round, square and rectangular, but closures can be manufactured in any shape. As plastic is able to be adjusted according to color and texture, plugs, caps and closures can be manufactured to match a customer's specifications. Materials, colors, sizes and required strength of closure are all aspects that should be considered when manufacturing plastic closures for a specific use. While closures can be used for decorative purposes, the main reason for using a cap is for its protective qualities.
Not only do closures keep contents in a container, they also prevent unwanted contact with outside elements. For items such as medicine bottles and pill containers, or sensitive chemicals, tamper evident caps and closures may be required. For other products that require a tighter seal, threaded closures can be manufactured using a mold designed for this purpose.
Threaded closures are twist-on and create a water tight seal between the cap and the container. As dip molding and dip coating are relatively simple procedures and result in minimal waste, high volume quantities of products such as caps and closures can be produced in a short space of time. Furthermore, as dip molding is an almost fully automated procedure, there are less labor costs to be considered.