Leading Plastic Closure Companies

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…

>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.

No one has more dip molding expertise than we do! We were a pioneer in dip molding 60 years ago, and we remain an industry leader today. Reach out for a fast, competitive quote on custom dip molding & coating services, from prototypes to low or high volume. We’re your single source for design consult, quick prototyping, custom formulations & secondary operations.

Aptyx $$$

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.

Precision Dip Coating LLC $$$

Carlisle Plastics is a dip molding plastics manufacturer offering end caps, plastisol paint masks, thread protectors, tube closures, protective caps and decorative caps.

Carlisle Plastics Company, Inc. $$$

At North American Latex Corporation, we specialize in high-quality dip molding solutions, serving a diverse range of industries with precision and expertise. Our advanced dip molding process enables the creation of custom latex products that offer durability, flexibility, and consistent performance. With decades of experience, we are committed to delivering tailored solutions that meet the...

North American Latex Corporation $$$

At Production Sciences, Inc., we pride ourselves on being pioneers in the realm of dip-molded plastics, sculpting a legacy of innovation and excellence that spans decades. As a collective force, we embody a commitment to precision, creativity, and unwavering quality in the realm of plastic manufacturing.

Production Sciences $$$

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.

Innovative Coatings, Inc. $$$
Get Your Company Listed
placeholder image Aptyx Precision Dip Coating LLC Carlisle Plastics Company, Inc. North American Latex Corporation Production Sciences Innovative Coatings, Inc.

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.

Plastic Closure Informational Video

 

Dip Molding Power Pages

Plastic Caps and Plugs

Plastic Caps and Plugs

Plastic caps and plugs are two distinct ways for sealing the ends, tops, and openings of tubes and containers. Caps are placed over the opening, and plugs are placed in the opening. Due to the many varieties of...

Plastic Coating

Plastic Coating

Plastic coating is the application of liquid polymers or plastic on the surface of a workpiece by dipping or immersion. The result is a thick plastic finish for protective and decorative purposes. This gives the material additional resistance against...

Blow Molding

Blow Molding

Blow molding is a type of plastic forming process for creating hollow plastic products made from thermoplastic materials. The process involves heating and inflating a plastic tube known as a parison or preform. The parison is placed between two dies that contain the desired shape of the product...

Industrial Coatings

Industrial Coatings

Industrial coatings are a type of substance that is spread over a surface of various derivatives like concrete or steel. They are engineered chemically to give protection over industrial products that include pipelines and...

Plastic Bottles

Plastic Bottles

Plastic bottles are bottles made of high or low-density plastic, such as polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polycarbonate (PC), or polyvinyl chloride (PVC). Each of the materials mentioned has...

Thermoforming

Thermoforming

Thermoforming is the process of heating thin plastic sheets to its forming temperature and stretching it over a mold which takes its shape. After cooling and setting of the molded plastic sheet, each part will be separated from its batch to form a single unit or product...

Plastic Molding Processes

Featured Industries