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Pressure Seal Frequently Asked Questions Pressure Seal Z-FOLD
What is Pressure Seal? Why are there so many different pressure seal patterns? 11”
Pressure Seal is a system comprised of a one-page self sealing document Some co-hesive patterns are patented. Some patterns are used for postal
and/or a folder sealer for sealing the document. and printer considerations, while others have to be used to allow for the
forms manufacturing process. Other patterns are used to allow for differ- CHECKS Cut Sheet 8-1/2”x11”
How is a pressure seal form sealed? ent ways of opening the sealed document. In general, one may stick with
The form is sealed though a process of folding the form on a pressure seal a few of the basic fold and co-hesive patterns for a large share of the pres- Features: Void Panto, Warning
folder/sealer. Folding the form aligns patterns of “co-hesive” which have sure seal applications. However, there are unique patterns which may offer Band, Microprinting, Artificial
been pre-applied to the document during manufacture. Once folded, the distinct benefits to the end user. Consulting with a trained pressure seal
document travels through a series of sealing rollers inside the folder/seal- print professional is worthwhile. Watermark and
er. These rollers apply pressure to the form, which activates the co-hesive
and in turn creates a secure “fiber tear” seal. Why doesn’t my form seal tightly? Thermochromic Ink on 28#
There are many variables some of which have already been discussed. Is the Basic Security w/Toner Grip.
Why is pressure seal glue called “co-hesive” and not adhesive? sealing impression on the folder / sealer sufficient? Is the machine poorly
Unlike a standard adhesive, a co-hesive requires two patterns placed on designed or not robust enough for the process? Were the forms manufac-
top of each other to create the bond. In the case of a pressure seal co-hes- tured with a poor quality co-hesive or did the manufacture use poor qual- PSEPRZ-MB Green
ive, very high pressure is required to activate the bond. ity processes when applying the co-hesive to the form? Are the positions of
the fold perforations “floating” from form to form or from ream to ream?
If pressure activates the co-hesive why doesn’t Do the co-hesive patterns align properly after the form is folded. This is
pressure from a laser printer cause the activation? especially important and very easy to check. Were the wrong raw materi- PSEPRZ-MBRN Brown
Pressure Seal co-hesive only reacts when it comes in contact with itself als used. Were the forms stored properly and allowed to acclimate prior to
under very high pressure. Pressure and heat as found in a printer has no use? A consultation with a pressure seal trained print professional will help
affect on the pattern. avoid many or all of these problems.
Doesn’t the “co-hesive” have little capsules that Why do my forms keep jamming in the printer?
break when under pressure? Again there are many variables. Maintenance issues on the printer, forms
Some say that the co-hesive is microencapsulated, however this is not true. having excessive curl or flexed edges, forms may be blocking or sticking
Pressure Seal co-hesive has no capsules to break. The chemistry is not like together, weak or poor perforations. However, try to rule out any issues
that of carbonless paper. The correct term for the bond is Mechanical with the printer itself before looking at the pressure seal form as the cul- CANADIAN CHECK
Bonding. Press two co-hesive surfaces together hard enough and they will prit. Cut Sheet 8-1/2” x 11”
form a bond.
Why do I get offset or transfer of toner Features: Red and Blue Prismatic
Are there different types of co-hesives in the market today? onto the sealing rollers of my folder/sealer?
There are numerous types of co-hesives in the market today. The types, Toner transfer or build-up will occur due to the fact that some toner is Check Pantograph, Microprinting,
chemistry additives and method of application vary from manufacturer to Artificial Watermark and
manufacturer. However, the method and process used to apply the co-hes- placed on the outside of the folded document. However, excessive toner
build-up can occur as a result of poor toner fusion to the sheet. This is a
ive to the form may be more important than the type of co-hesive used. Thermochromic Ink on
printer issue. Some toner transfer will occur. Knowing this and dealing with
Can heat or extreme cold affect a pressure seal form? it on a regular basis will avoid problems. 28# Laser Paper.
Once manufactured, cold or heat should not affect the product as long as
the product is properly wrapped. However, the product should be acclimat- Can any paper be used on Pressure Seal applications?
ed to a print room for at least 48 hours before imaging. The raw co-hesive No. Only specific papers are compatible with Pressure seal technology. PSEPRZ-BP-CAN Blue & Red Check
material is another story. If the temperature of the raw co-hesive drops
below freezing, the material is destroyed and cannot be used. This is a qual- What about basis weight of the paper?
ity control issue for the forms manufacturer. Usually 24# and 28# papers are used although 38#, 80# & 100# tag can be
used for some applications along with certain security papers. However,
Are there any special handling issues for one should be aware that not all folder/ sealers handle these heavier basis
Pressure Seal forms before or after imaging? weights.
Absolutely. Product must be kept in its original wrap to ensure proper
moisture content of the paper is maintained. Product should be climatized What is the shelf life of the finished form? CHECK Cut Sheet 8-1/2” x 11”
in the imaging environment at least 48 hours prior to imaging. Once Normal shelf life is from 6 months to a year. Assuming proper packaging Features: Blank face, great for imprinting
imaged, the product should be placed curl side down to remove any curl and storage. Forms that are left exposed to the air will see a rapid deteri-
caused by passing through the print device. In general, forms should be put oration in sealing performance. Leftover reams and partial reams of forms check pantograph in a specific color,
through the folder sealer on the same day that they are imaged. should not be left out. They should be placed back inside their cartons inte- Artificial Watermark and Thermochromic
rior bag until the next use.
What makes a good Pressure Seal form? Ink on 28# Basic Security w/Toner Grip.
Proper co-hesive chemistry and a proper method of applying the co-hesive What is Simplex? Duplex?
to the form are key. Pressure seal co-hesive is a volatile compound which Simplex is a one-sided imaging. Duplex is two-sided imaging.
requires active Quality measurement during the entire manufacturing PSEPRZ-Blank Blank Face
process. Important as well is accurate perforation registration to ensure What is the advantage of simplex imaging?
proper alignment of the perforations and co-hesive pattern during fold- Imaging on one side allows for faster throughput because the document
ing. Fold assist perforations that float in and out of registration will cause doesn’t have to pass through the printer twice for imaging. This increases Also available as a 14” Eccentric Z-Fold
folding problems on a typical folder/sealer. In addition, this may cause the the speed with which batches of forms can be processed through the print
co-hesive pattern to align improperly when the form is folded. Floating device. In addition, many high end print devices incur “click” charges or per
registration of perforations will cause feeding problems on a folder/sealer page charges for each page printed. Simplex printing minimizes these click
and result in a poorly sealing form. Other factors that play an important charges.
part in a good quality pressure seal form are paper type, print quality, pack-
aging and storage. It is important to select a forms manufacturer with What is the disadvantage of simplex printing?
knowledge of the critical factors involved in manufacturing pressure seal Imaging on one side can reduce the area on the form available for the
forms and consistency is key. placement of variable imaging via laser or impact printing. Guide to understanding form names:
What should one expect from the form and from the folder sealer? What is the advantage of duplex imaging?
The form should show an aggressive fiber tearing bond after folding and In general, imaging on two sides of the form increases the area available PS = Pressure Seal PS F PR EZ G Colors: Form Description:
sealing. Anything less is not acceptable. The horizontal perforations on the for variable imaged information. G = Green NP = No Perf
B = Blue
Blank = No Block Out
form should remain in tight registration and not float from form to form. Form Fold or
Other specifications of the form such as print quality and cut off accuracy What is the disadvantage of duplex printing? Form Depth: Form Type: Construction: R = Red T = TransVue™ Window
P = Prismatic
W = Window
should adhere to normally accepted printing industry standards. The fold- Duplex printing decreases the processing speed because the document E = Eleven PR = PayRoll Z, EZ, C, V, BRN = Brown POP = Pop Opening
er sealer selected for the application should be a good fit as far as speed must pass through the imaging device twice. Duplex printing also increas- F = Fourteen MP = Multi-Purpose 1-part 2-way, &
and capacity. The machine selected should show ease of use and robust es click charges which can significantly increase the cost of printing for larg- Double Parallel
construction to stand up to the high sealing pressure required to achieve a er volume applications. 3
proper secure seal.