Posts Tagged ‘Injection Molding’

How Jewel Cases are Made

Wednesday, March 16th, 2011

jewel case stack How Jewel Cases are Made

Jewel cases were introduced in the early 1980s when Compact Discs (CDs) were first launched into the market. Since then the jewel case has remained fairly unchanged from the original design and still manufactured based on standard specifications. Jewel cases have been the main form of CD packaging because it is designed to protect and secure CDs.

So how are jewel cases made? They are made by a process called injection molding. This is the most widely used manufacturing process in the world. Injection molding requires an injection molding machine, raw plastic material, and a mold. The process starts by taking plastic resin that comes in the form of plastic pellets, and then melting them with heat and pressure. The molten material is injected into a mold that is held under high pressure. Once the plastic is cooled, the mold can be opened up and the parts are removed. Injection molding allows for many parts to be produced simultaneously. The process is fairly short, typically lasting at most 2 minutes, which allows for many parts to be made.

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Which DVD Case is Best for You?

Monday, December 1st, 2008

It is Friday night and you are gazing at the DVD shelf trying to decide which movie to watch for the night, but I doubt you are thinking about all of the different kinds of DVD cases that are available. DVD cases come in a variety of different sizes, grades, and colors. If you need to purchase DVD cases for your business or personal use, it is good to consider the different factors to decide which cases best meet your needs.

black dvd case Which DVD Case is Best for You?DVD cases are available in many different sizes. Typically, the standard DVD case has a depth of about 14mm. Some people may like the look of a smaller case better, or they may want to save on space or shipping. For those, there are options of 7mm or 5mm in depth.

There are also different grades of quality for DVD cases. There is a standard grade made out of recycled materials or a premium grade made out of 100% raw materials, which would last longer. There is even the option of cases made from a mixture of recycled and raw materials. Your choice depends on if you want to focus on price or durability. Some DVD cases are also machine grade, which means that they are machine loadable. This could save an enormous amount of time if you have a machine that can load the DVD’s in the cases for you. blu ray dvd case Which DVD Case is Best for You?

The majority of DVD cases come in black, but you may want to invest in color to stand out on the shelf. Special occasions, such as weddings may prefer white cases over black cases. DVD cases may come in a variety of different colors, such as red, yellow, green, blue, purple, pink, clear, frosted clear, white, or the traditional black. There is also the option of Blu-Ray cases if you would prefer that for Blu-Ray discs. Some video game cases may break easily, so there is the option of buying these DVD cases to replace them. Standard DVD cases are compatible with many video games, such as the Nintendo Wii.

Injection molding also allows suppliers to provide high-quality, durable DVD cases at a reasonable price. There are more options in choosing DVD cases than one might think. It is important to determine your needs and then figure out which DVD cases best suit your needs at a reasonable price.

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What is Injection Molding?

Monday, November 24th, 2008

injection molding 300x229 What is Injection Molding?

The term, “injection molding”, is often thrown out in reference to packaging and storing DVDs, but many people do not understand the concept of injection molding.

The following information is a brief explanation of what injection molding is and how injection molded products like lawn furniture, thermal coffee cups and even DVD cases are made?

Injection molding is a manufacturing process used to produce parts from thermoplastic pellets and is similar to making candles from a mold.

Some of the common types of thermoplastic are: polystyrene, acrylonitrile butadiene styrene (ABS), polyamide, polypropylene, polyethylene, and polyvinyl chloride (PVC). These different thermoplastics vary in durability, resistance, and flexibility

First, a mold is custom designed from metal and detailed to form the desired finished product. Molten plastic is then injected at high pressure into this mold that is the inverse of the product’s shape. Hydraulic or mechanical pressure is applied to make sure all the cavities within the mold are filled. The plastics are allowed to cool and then removed with ejecting pins. There may be excess material, which is then trimmed off and recycled.

So the next time you consider purchasing a plastic product, you will have a much better idea of just what it takes to make it!

Watch this video if you are also interested in how thermoforming works:

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