Envelope Adhesives 101
Everything you Wanted to Know About Gums....But Were Afraid to Ask
Adhesives, or gums, play a critical role in the performance of envelopes. This guide discusses the general types of adhesives used for each application in the manufacture of envelopes.
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Safe Handling of Envelope Adhesives
Information for converter and users
Henkel formulates all of its products to be as safe as possible, while still providing the performance capabilities our customers require. But adhesives, including those used in the manufacture of envelopes, are chemicals. As such, precautions must be taken to minimize or eliminate contact with skin and eyes. The purpose of this booklet is to help the envelope converter recognize some of the hazards associated with handling envelope adhesives.
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VECTORSEAL™ Seal Gum
A New Generation of Front Seal Gums
Ready to take your envelope seal gum to a whole new level? Try VECTORSEAL™.
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VECTORSEAM™ Seam Adhesive
Extrusion seam adhesives get you moving quickly in the right direction.
Tired of shutting down your machines to clean up nozzle build-up? Need to hold tighter tolerances on your envelope seams? Want to see consistent cut-off, even at high speeds? Look no further.
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VECTORPATCH™ Window Gum
Gets You Moving Quickly in the Right Direction
Been looking for one window gum to run on all your envelope machines? Your search is over. New VECTORPATCH™ window gum delivers outstanding performance on a wide variety of envelope machines.
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Pressure Sensitive Seal Gums
Henkel's pressure sensitive seal adhesives
When remoistenable seal adhesives just don't fill the bill, consider using Henkel pressure sensitive seal adhesives. Whether it's gum box stability you're after or adhesion to difficult papers, Henkel offers products with a broad range of in-plant and end-use performance properties.
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Especially For You
Specialty envelope adhesives from Henkel
Specialty adhesives for envelope converting, including fugitive adhesive, translucent seam gum, neutral pH seam gum, and open end seam gums are described in this flyer.
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Thermographic Printing White Paper
Technical White Paper
Thermographic printing places great demands on envelope seal gums. Learn more about this in Henkel's technical white paper.
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Adjuster's Gum Guide
Manual and Reference for the Envelope Manufacturer
Henkel's Adjusters' Gum Guide is a spiral bound reference, information and training tool for the envelope manufacturer. Issued for several decades, the Adjusters' Gum Guide is well regarded by envelope manufacturers, adjusters and OEM personnel. The latest edition is updated for use in the 21st Century.
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Best Practices for Front Seal Gumming
Proper application of the front seal is one of the most critical factors in producing envelopes of good quality.
Proper application of the front seal is one of the most critical factors in producing envelopes of good quality. The factors listed in this literature are believed to be some of the key variables affecting quality and consistency in front seal gumming. Suggestions on current industry best practices are offered as well.
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Best Practices for Rotary Side Seam Gumming
Of all gumming issues, those involving side seam are among the most common.
Of all gumming issues, those involving side seam are among the most common. The water-based gums currently in use for rotary side seam in the envelope industry will lose their effectiveness if not handled properly. Excessive exposure to air or high shear will cause the seam gum to lose moisture as a result of evaporation. this can lead to extreme changes in viscosity, which will change how the gum transfers, applies and machines. The key variables affecting quality and consistency in rotary side seam gumming are covered in this literature.
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Best Practices for Extrusion Seam Gumming
Extrusion seam gumming is one of the most sensitive of all gumming applications.
Extrusion seam gumming is one of the most sensitive of all gumming applications. Without proper setup and maintenance, it is easy to produce defective envelopes. The Best Practices are believed to be some of the key variables affecting quality and consistency extrusion seam gumming.
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Best Practices for Pressure Sensitive Seal Gumming
Pressure sensitive gum is among the most difficult to work with of all envelope gums.
Pressure sensitive gum in among the most difficult to work with of all envelope gums. It requires special handling during application and packaging of finished envelopes. The key variables affecting quality and consistency in pressure sensitive gumming are covered in this literature.
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Best Practices for Self Seal Latex Gumming
Self seal latex is among the most sensitive of all envelope gums.
Self seal latex is among the most sensitive of all envelope gums. It requires special handling during storage, application and packaging of finished envelopes. The key factors affecting quality and consistency in self seal latex gumming are detailed in this literature.
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