Clamshell Manufacturers and Companies

IQS Directory implements a thorough list of clamshell companies and suppliers. Utilize our listing to examine and sort top clamshell companies with previews of ads and detailed descriptions of each product. Any clamshell company can design and engineer clamshells to meet your companies specific qualifications. An easy connection to reach clamshell companies through our fast request for quote form is provided on our website. The company information includes website links, company profile, locations, phone, product videos and product information. Customer reviews are available and product specific news articles. This source is right for you whether it's for a company of plastic clamshells, stock clamshells, and vented biodegradable clamshells.

  • Greeneville, TN

    Valk Industries provides engineering and manufacturing of quality products and services, including their superior clamshells. Operations began in 1975 and Valk has expanded from providing custom machining and fabrication processes to over wrapping, component assembly and packaging products which include poster tubes and shipping tubes. Valk is committed to quality, service and reliability.

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  • New Milford, CT

    For over 40 years, Conlet Plastics has been a leader in clamshell production. They serve a wide variety of industries including medical, airline, automotive and signage, with high-quality products that are reasonably priced & delivered on time. They are fully equipped for prototypes or production of many kinds of blister packs. They also offer in house tooling capabilities.

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  • Hendersonville, NC

    At MARC we offer rapid prototyping & precision custom thin gauge thermoforming with less tooling investment than injection molding processes. Materials include HIPS, PET, PETG, RPET, HDPE & various forms of experimental green plastics. Customers rely on us to assemble, pack, inspect & ship their products directly to the end user. All our thermoformed plastics are ISO 13485 and 9001 registered.

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  • Canby, OR

    Founded over 30 years ago, we design and manufacture thermoformed parts using state-of-the-art equipment, technology and processes such as pressure forming and vacuum forming. We serve a wide range of industries, including automotive, industrial, electronic and recreational. Our mission is to provide superior customer service and serve the thermoforming industry by offering the best quality products. Call Willamette Plastics today to learn more about what we do!

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  • Stirling, NJ

    Engineered Plastic Products, Inc. is a manufacturer of forms and fabricated thermoplastic materials that provides numerous quality services and products for industrial and commercial applications. EPP. Inc.’s clamshells are designed and produced by a staff of experienced manufacturers who use their superior expertise to provide you with only the best.

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  • Coleman, MI

    With over sixty five years in the industry we are the experts you can rely on to bring you top of the line clamshells that you cannot find anyplace else. We are an ISO 9001:2008 and an ISO 14001:2004 certified company dedicated to providing you with customer service that stands above the rest. To learn more about what we may do for you get in touch with our customer service department via telephone or email today!

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  • West Chester, PA

    If you have been looking for clamshells at a low competitive price then look no further! We have the knowhow that you can count on to assist you in figuring out exactly what kind of vacuum formed packaging that you need. Our research and development department works around the clock in order to ensure that we remain on the leading edge of innovation at all times. For more information visit our website or send our representatives an email today!

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  • More Clamshells Companies


Vacuum Forming: a Cost-effective, Versatile Plastic Molding Alternative

by Rebekah Fuller, Editor for IQS Let's take a moment to review the vacuum forming process and its advantages for customers in need of molded plastic parts. With the numerous reliable plastics manufacturers and companies dedicated to plastic materials - from plastic fabrications and machined plastics to injection molded plastic, blow molded plastics and rotationally molded plastics - how do vacuum formed plastics stand out? Vacuum forming is a simpler process than injection molding, involving less equipment for the production of parts and requiring less tooling. Vacuum forming companies offer... Read More

The Hidden Pearl In Clamshell Packaging

We are a society of judging a book by its cover. This sounds harsh, but it's the reality of how we live. This is why huge amounts of money are put into the marketing of products, why there are multiple repackaging and redesigning of products throughout the year to make it thinner and more attractive, and why there are design teams specifically for how the product looks on the store shelves. Face it, if your product does not stand out to consumers as an attractive option, it will not be... Read More

Clamshells: Sealing Things In

Clamshells always do their job well, in some cases too well. There have been times when I have bought a new CD player or camera encapsulated within the protective shell of a thermoplastic clamshell wrapping and had difficulty retrieving the product without the aid of a knife or scissors. However, the irritation has always been balanced by the efficiency and safety ensured by this version of vacuum formed plastic. Also, the difficulty in opening a clamshell works as theft protection when items are in a commercial setting while the clear... Read More

The Art of Imitating Nature

I have always assumed that the imitation of nature was reserved for artists, musicians and actors, and that there was no place in this philosophical idea for industrial products or packaging. However, when really looking at the many everyday items that surround me, much of what I buy is imitating nature. A prime example is the packaging known as clamshells, which are designed to open and close like a clam and are used to protect a number of products sold in commercial venues such as grocery stores, electronic stores and... Read More

Judging A Book By Its Cover?

I'll admit, I'm one of those people that decide whether or not to buy a product based on how attractive or eye grabbing the box or display is. I've always been like that for as long as I can remember. I picked out which books to read in the library based on how their cover looked, I always wanted the brightest and coolest labeled cereal, and whichever makeup had the best cover model was obviously the one I needed. I am not alone in this though, many people buy products... Read More

Clamshells For Christmas

Christmas is the best day in the world when you are a child. Ask any child what their favorite holiday is and you will surely hear Christmas as the top choice. The reasons may vary slightly, but the most popular reason that children love Christmas is because of the massive amount of loot they collect. Whether the top present is a new Barbie doll, the Transformer action figure or the new Spiderman figurine, Christmas lists are extensive and time consuming to create. My cousins and I used to spend the... Read More

businessIndustry Information


Clamshells are resealable one-piece containers made up of two halves, held together by a hinge. Named after the clamshells found in nature, who also open and close on a hinge, they are typically composed of a rigid plastic like clear PVC or polystyrene. They can, however, also be made of other materials, like cardboard. Clamshells are highly useful, offering products increased visibility and protection from theft, tampering and environmental conditions like rain. They are also very lightweight, carrying an impressive strength to weight ratio. These factors, along with the fact that they are inexpensive to produce, make clamshells popular for packaging, shipment and product display applications in a variety of industries, such as: clothing, cosmetics, electronics, entertainment, food and beverage, healthcare, household appliance, office supply and retail.

Types of plastic used to create clamshells include polystyrene, polyvinyl chloride (PVC), polyester and various other thermoplastics and polymers. Every plastic type offers different qualities. Polystyrene, for example, is hard, clear and inexpensive to produce. It is available a variety of different forms, including solid sheet/molded plastic and foam. In addition to being clear, it can also be colored. It, however, is known to degrade very slowly and its use is regarded dubiously by environmental scientists. PVC, on the other hand, is known as an excellent insulator and resistor of the chemicals in substances like salts, acids, fats, bases, fuels, paint thinners and alcohols. It may be rigid or elastic. PVC degrades much better than polystyrene, but it still should be recycled rather than thrown away. Finally, polyester is unique as well. It is available in different types, with varying hardnesses and thermal and chemical stabilities. Also, polyester clamshells have refreshingly low toxicity levels and are recyclable.

Clamshells can be made using a variety of plastic forming processes, but the most common methods implemented on their behalf are thermoforming, pressure forming and vacuum forming. Thermoforming is a process by which plastic material is heated, stretched and cooled into parts. Pressure forming and vacuum forming are both sub-processes of thermoforming and, therefore, they all begin the same way: First, plastic sheets are fed into heaters powered either by electricity, infrared radiation or natural gas, where they are warmed until they elastic and malleable. Once this step is complete, they are transferred to a forming station, which is where the deviations take place. If, at this point, the plastic is being pressure formed, pressurized air pushes it into a pressure-controlled mold. If, instead, it is being vacuum formed, the plastic will be enclosed in a mating mold and pressure box, where a vacuum will suction all of the air out and pull the plastic into the mold. Both methods are viable, but if a manufacturer is attempting to form a clamshell with greater precision or with more intricacies, pressure forming is the recommended choice, because it yields stronger adherence. Whatever a manufacturer’s choice, once the plastic has cooled, it is ejected from the mold using rigid reverse airflow. At this point in the process, the clamshell exists either as two separate components or a single sheet. If the former is the case, manufacturers proceed by fusing the edges together to create a hinge, using either stamping, welding or heat treatments. If the latter, manufacturers simply fold the sheet to create a hinge, then heat seal it.

These methods create a number of different clamshell types, such as clamshell trays, egg crate clamshells and tri-fold clamshells. Clamshell trays are used to package and display products simultaneously, like, for example, blueberries and other fruit, small tools like screws and pins and any number of other items. Egg crate clamshells, on the other hand, hold and divide products. They are named, of course, after egg cartons, though they also hold other rounded items, like golf balls. Finally, tri-fold clamshells are designed with a flat bottom so they can stand on display. These can be used to hold all sorts of products, like remote controls and other electronic goods, locks, handheld thermometers, sporting goods and more. In addition to these standard designs, clamshells are also available in a variety of custom configurations, and, of course, all clamshells are purchasable in different shapes and sizes. To find out more, reach out to an experienced clamshell and packaging manufacturer today.

Valk Plastic Clamshell Packaging
Clamshell Product Packaging
Clamshells – Valk Industries, Inc.
Clamshells – Valk Industries, Inc.