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Clear Envelopes, Unmatched Quality, & So Much More!
Need envelopes that are sure to get opened?

EnvyPaks are award-winning, crystal clear, USPS-approved poly envelopes. Improve your response rate with automatable and customizable EnvyPak mailers.

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Auto-Insertion

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Automatically Inserted Mailer

EnvyPak envelopes are auto-insertable in a number of sizes and material thicknesses. Our customers have successfully auto-inserted EnvyPaks with equipment from Pitney-Bowes, Bell & Howell, and more. Try it for yourself—call now and ask how you can get an EnvyPak test kit.

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Why EnvyPak?
Frequently asked questions about EnvyPak's capabilities:

Why choose EnvyPak?
The key to a successful mailing campaign is to get a good response rate. Getting the recipient's attention is the first step to getting a response. EnvyPaks are designed to enhance the contents and compel the customer to open the envelope.
Are EnvyPak poly envelopes USPS-approved?
Yes, they are made from material approved for postage by the United States Postal Service.
Is polypropylene really eco-friendly?
Polypropylene (#5) is 100% recyclable. Click to www.earth911.com to find out where and how to recycle polypropylene in your area.
What about bio-poly?
Bio-poly is recognized as a #5 plastic and is also recyclable. The percentage of bio-additive in bio-poly is too small to affect the recycle stream.
Is there more to know about bio-poly?
Our bio-poly is made with an additive called EcoPure, by Bio-Tec, which is proven to accelerate the degradation of the material it is added to. It is tested according to the industry-recognized standard - ASTM D5511. For an exhaustive FAQ regarding this, we encourage you to visit Bio-Tec's website: www.bio-tec.com.
Can EnvyPak envelopes be inkjet printed?
Solvent-based inks, UV ink, and laser imprinting will all work. However, water-based inks will not.
What are the closure options for an EnvyPak?
Permanent tape, resealable tape, wafer seals and Velcro are all options that can be used.
How many colors can be put on an EnvyPak?
We can print a total of 7 colors, which can be divided up according to your needs and specifications. White back-ups and coatings are also available.
Can PMS, metallic, and fluorescent inks be used?
Yes, any color ink can be used, from straight PMS (Pantone Matching System) colors to custom matches.
How are EnvyPaks made?
EnvyPaks are manufactured using a process that was developed by Univenture, Inc. called "Dark Weld." This technology is proprietary and is what makes our product unique and superior.
What process is used to print an EnvyPak?
EnvyPaks are printed flexographically using UV inks and coatings.
Are EnvyPak envelopes auto-insertable? What machines do they work on?
EnvyPak envelopes are auto-insertable in a number of sizes and material thicknesses. Our customers have successfully auto-inserted EnvyPaks with equipment from Pitney-Bowes, Bell & Howell, and more. Try it for your self—call now and ask how you can get an EnvyPak test kit.
Can EnvyPaks be made in custom shapes?
Yes. We have the tooling and expertise to create envelopes in a variety of shapes and sizes.
What are the largest/smallest sizes EnvyPaks can be made in?
The largest EnvyPak that we can currently make is 22 x 15 inches (with a flap) and the smallest is 2 x 3 inches. These dimensions may vary based on specific applications.
What is the thickness range of material that an EnvyPak can be made with?
Ultimately, this depends on the application, but EnvyPaks have been made from materials ranging in thickness from 2.0 mm to 6.0 mm.
What materials can an EnvyPak envelope be made from?
Again, it depends on the application. Typically, a mailer is made from PP or bio-PP but that material can also be a white/clear combination. An EnvyPak can also be a paper/clear combination as well (we use a specially formulated paper for our process). Other specialty pieces such as bind-ins can use SBS board, PLA and PET as well as PP.
What is the price difference between paper envelopes and EnvyPak poly envelopes?
You can expect to pay more for a poly envelope, but the comparison isn't 1:1. The application, the impression and the response rate give the EnvyPak an increased added value.
What is the difference in postage between paper and poly envelopes?
The exact postage is dependent on the method of mailing, as well as the contents. We encourage our customers to contact their local post office for specific rates.
Stock EnvyPak envelopes, packaging and office supplies available at www.Univenture.com