#PRINT CARBONLESS FORMS WINDOWS#

Before you suggest it is the envelope, check out the equipment one more time. It is always important to check the condition of inserting equipment because the solution to the problem might be right in front of you. Sometimes mailroom staff do not use the proper type of wetting agent or fail to clean their wetting equipment, which can cause problems with envelopes sealing after inserting. Please also note that envelope seal flap gums are designed with high speed inserting in mind. It is important that during your visual inspections you note any imperfections in the gum. Some even use pattern gumming equipment to make sure gum lines are exact. Envelope manufacturers carefully check for gum “slinging” or excessive gum around the windows. Most postal regulations assume some small variation, but if the regulations show exact placement, they should be exact.Įnvelope gum lines (adhesives) should be exact. Familiarize yourself with those regulations and take into account that a small amount of variation in plate thickness and placement can occur as the press heats up and vibrates. Remember, barcode placement, if used on the outside of the envelope, must be exact per USPS regulations. Most flexographic printing variations are so small they may be difficult to detect without a trained eye using a magnifier. It is difficult for the industry to interpret what you thought you wanted, so it is important for you to look at every proof carefully and make sure the measurements are correct, the barcode is correct and the artwork is where you want it to be. Remember that your envelope manufacturer will insist that you approve the artwork and will make the product that conforms to your exact instructions. By selecting a 5/8” window, you know that you are well within postal tolerances.įlexographic printing plates also have a small amount of “play” in them.

The Postal Service mandates that the envelope window be no closer than ½” from the bottom of the envelope.

Your envelope manufacturer will make every attempt to hold tolerance, but if your application requires an exact measurement, it’s best to let the envelope manufacturer know so he/she can adjust the machinery for variation in a manner that falls within your size tolerance.įor standard #10 window envelopes, the industry recommends that you order a window that is no lower than 5/8” from the bottom of the envelope. The key word here is “slightly” because 1/16” is very small. As a result, your envelope may be slightly larger or slightly smaller than you ordered. In addition, normal wear in cylinders and bearings can cause subtle variations in cutting location and folding scores. This occurs because as machinery runs, it heats up, and metal expands. Normal machinery variances in the envelope manufacturing industry are +/- 1/16”. They will probably still work, but gum dries out and paper will yellow with time. Try not to use envelopes older than six months from date of manufacture.

Make an effort to use envelopes quickly.

Do not leave partial boxes of envelopes open.

Store envelopes off the floor and only in industry approved containers.

#PRINT CARBONLESS FORMS WINDOWS#

Store envelopes away from windows and direct sunlight.Do not exceed the RH levels indicated on the previous page or you could damage envelope gums and/or create problems in paper accuracy or problems with USPS automation compliance equipment.Pallets should be stretch wrapped to further protect the boxes of envelopes.įollowing the proper storage procedures will help prolong the shelf life of your envelopes. Boxes should not be placed directly on the floor, but placed on a raised surface such as a wooden pallet to avoid having moisture from the floor permeate the boxes and affect the envelopes. Ideal storage conditions are temperatures of 65-85 ο Fahrenheit and humidity at 35-65 percent RH (relative humidity).īoxes and cartons should be closed and sealed to prevent moisture from damaging the envelopes. Envelopes should be stored in areas that are well ventilated and dry because humidity can cause envelopes made with remoistenable adhesive to prematurely reactivate and tack together (blocking). Church Offering Envelopes | Tithing EnvelopesĮnvelopes should be packed and stored resting on edge, not laying flat.

Print carbonless forms