Plastic Closures

A reliable source for Dip Molded Plastic information and leading Dip Molded Plastic Companies & Manufacturers.

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 Moreā€¦

>Plastic Closures Plastic closures are plugs, caps and seals that are protective devices for the ends of products to keep containers closed and their contents inside. Tubes, pipes, fittings, connectors, bottles and jars all require closures to seal their openings. Common examples include bottle caps, camera lens caps, car plugs and decorative caps.

Leading Manufacturers

Sellersville, PA  |  800-398-2520

We are plastic experts, and we offer many services for our customers, including dip molding and a whole lot more. No matter who our customers are, we will work our hardest to ensure that you are fully satisfied with our products. We serve a huge variety of customers, and can find the ideal product to use for any industry. Find out more when you give us a call today!

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Molded Devices, Inc. Sellersville $$$

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. Customers can also have a choice of color plus foam, gloss or texture finish. We draw from 40 years of experience in the plastic molding and protective coating industry. Let's talk about your project.

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Innovative Coatings, 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. When you need a dip molding solution, turn to Texas Dip Molding & Coating for our experience and wide range of capabilities. We serve a variety of industries and have the expertise necessary to deliver the quality products you need on time every time.

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Texas Dip Molding & Coating, Inc. $$$

Waterbury, CT  |  203-805-4564

Let Precision Dip Coating show you what expert dip molding looks like. We match any color and offer great services to meet your specs for decorative and protective coatings and soft plastic parts. Send us your drawings or samples today for highly efficient, low cost plastisol and fluid bed powder coating; hot dip, cast and rotational molding. We may even have the tooling in stock already!

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Precision Dip Coating LLC $$$

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. We provide a wide selection of standard sizes and colors. Custom colors as well as nonstandard shapes and sizes are a specialty. We are ISO 9001 certified. Our mission is to provide quality products and services.

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Carlisle Plastics Company, Inc. $$$

Auburn 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. We have quality plastic dip moldings for a variety of applications and markets. Contact us today to learn more information!

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Rubber & Plastics Company $$$
placeholder image Molded Devices, Inc. Sellersville Innovative Coatings, Inc. Texas Dip Molding & Coating, Inc. Precision Dip Coating LLC Carlisle Plastics Company, Inc. Rubber & Plastics Company

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.

Carlisle Plastics Hex PVC Caps Plastic Closures - Carlisle Plastics Company

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.

Plastic Closure Informational Video