Composites and Vacuum Bagging Materials

Transparent Silicone for Vacuum Bagging | Smartech International

When you’re trying to find the best bagging materials, you need look no farther than this page. With the perfection of German design, Smartech offers you the best in industrial bags that will set your business and projects apart – with easy use, fine product finish and durability.

We know that to finish your products, you have specific needs. The materials we provide you must be strong, long lasting and fit for your task. That’s one reason why we specialize in helping the industries that use movable sheeting materials during their production; it allows us to hone our products to give you the maximum performance you need in a reusable vacuum bag.

Your Vacuum Bagging Process is Important To Us

Your end laminate is based on the excellence of your bagging material. This will determine the amount and uniformity of resin in your part, its consolidation and the number of voids. We know that nylon bags aren’t going to work if you’ve got a phenolic resin layup. We know that if you’re using a polyimide laminate, it needs to heat at such high temperatures that most vacuum bags just won’t stand the heat.

That’s why we stock a wide variety of bagging material, to help with any job you undertake.

Don’t be shy if you’ve got a question about the right material for your process. Call us now at 704-362-1922!

About Vacuum Bags

Believe it or not, you can make a vacuum bag out of anything.

There are only three essential requirements:

1. That the bag be strong enough to create a vacuum.

2. That is be supple enough to mold to the part it’s bagging.

3. That it maintain these characteristics under high temperatures.

However, bags must also withstand all of your handling at layup, not wrinkle, provide a complete seal and conform to the deepest channels in a part. That’s called bridging, and the ways to avoid it are creating folds that help the bag surround edges, adding inserts or creating a custom bag.

Bag Types and Heat

The materials commonly used for temperatures lower than 275 degrees Fahrenheit are: polyurethane, polyethylene and polypropylene.

The material commonly used for temperatures up to 450 degrees Fahrenheit are nylon, in both alloy and coextruded heat-stabilized forms.

The material commonly used for temperatures up to 750 degrees Fahrenheit are polyimide films.

Our Reusable Bags

Resealable Vacuum Bags | SmartechIt’s only been less than 20 years that reusable vacuum bags have increased in use. We’ve been on the inside track with our semi-permanent bags, which mark a great improvement over throw-aways. They help you save money, time and resources.

They allow you to complete more projects and make gains in your business.

We only use the highest strength silicone materials, which can sustain perfect negative pressure while reaching temperatures of over 400 degrees Fahrenheit.

We also provide you with bags that are large. For example, if you’re using a debulking table, you’ll find that our material width of up to 118″ will cover the majority of industrial applications, while 589 percent elongation will help you avoid bridging.

All bags are not the same…your vacuum process is the great equalizer. You do it every day, because creating low-void parts with high tensile strength is your business.

To run it well, you need powerful bags.

We help you by providing options you just can’t find everywhere else. Because all of our silicone bags not only stand up to thousands of work hours, but they survive longer than our competitors’ products. We’re confident that you’ll see first-hand the power and utility that comes from our silicone sheeting.

The Advantages of Reusable Vacuum Bags

Enjoy reduced cost use, fewer expendable materials and waste products, savings in labor, minimal creative steps, increased part consistency and complexity. See our itemized list of material and product specs.

Our silicone bags are available in one of four durometers, and in smooth or textured surfacing.

You can enjoy all the money and time saving benefits of our progressive materials and quality construction right now. Just call us today!

How Our Materials Help Your Autoclave Processing

Your autoclave processing is made simpler by our silicone sheeting. Your goal is to achieving a proper resin-to-fiber count, without spaces, to create the lightest and most durable parts possible.

The traditional way to make these kinds of parts is the autoclave, which applies heat, and vacuum pressure to press the resin and carbon or epoxy fibers together, as tightly as possible.

You have a choice in what materials you use during this process. We guarantee you that ours are equal to the power of your autoclave. We stand the heat, pressure and duration of application again and again.

How Our Materials Help Your Out of Autoclave Processing

When you’re curing a product, you’ll want to reach the proper fiber count, while at the same time ridding it of voids. For those who use newer OOA processing, you can achieve this by using a closed mold and then activating negative pressure, positive pressure or heat.

Remember, to speak to us about advanced vacuum bagging materials for your autoclave process, call us at 704-362-1922.

Vacuum Bagging FAQs

Essentially, yes! Our calendared silicone and natural rubber bagging material performs the same function as an RVB or silicone counter mold. However, pre-cured calendared material is more durable and easy to use than the brush or spray applied systems. Our high elongation materials are suitable for all but the most severe profiles.

The color is really just to make it easier to differentiate between different material durometers.

We pride ourselves on high quality products, as well as customer service. The answer to that is simply, “Give the people what they want!” Many of our customers maintain that certain colors work better for them than another in the same mixture. Whenever we can, we’ll accommodate that.