BROWSE BY ADHESIVE APPLICATION
Practical adhesive solutions. Responsive support.
Technical expertise. People who care.
Envelope Manufacturing
Water-based and hot melt adhesive solutions developed for the distinct demands of envelope seams, windows, gums, closures, and high-speed production.
An envelope may use several adhesive technologies, each expected to perform a different function. Seam adhesive must run cleanly and hold reliably. Window adhesive must bond film to paper without compromising appearance. Front gum, back gum, remoistenable, self-seal, and pressure-sensitive closures must activate and perform as the customer expects.
We support envelope manufacturers with adhesive products, technical experience, and equipment understanding built around the realities of high-speed production.
Each Adhesive Has a Different Job
Envelope production cannot be reduced to one universal “envelope glue.” Every gum, seam, patch, and closure has its own production and end-use requirements.
We take the time to understand what the adhesive must do, how it is applied, and where performance is falling short before recommending an appropriate product or next step.
Talk with People Who Understand Envelope Production
Tell us which part of the envelope you are bonding, the adhesive you currently use, your equipment and line conditions, and the result you need.
Applications We Support
You May Know These Adhesives As
Envelope Seam and Side-Seam Bonding
Water-based and hot melt technologies for folds, seams, side seams, and other structural bonds.
Front Gum
Adhesives developed for the intended activation method, paper, equipment, drying conditions, and closure performance.
Back Gum
Solutions for reliable closure performance, clean application, storage stability, and the finished user experience.
Remoistenable Gum
Water-activated technologies for traditional envelope closures and specialty applications.
Self-Seal and Pressure-Sensitive Closures
Permanent and pressure-sensitive systems for protected closures, release liners, and customer-activated sealing.
Window Patching
Adhesives for bonding films to envelope papers while supporting clean appearance and dependable production.
Specialty Envelope Constructions
Solutions for security envelopes, specialty papers, direct-mail formats, commercial envelopes, and other distinctive products.
Front gum
Back gum
Remoistenable gum
Latex gum
Self-seal adhesive
Pressure-sensitive envelope adhesive
Envelope seam glue
Extrusion glue
Side-seam adhesive
Window-patch adhesive
Why Envelope Manufacturers Contact HAR
Front gum, back gum, remoistenable gum, or self-seal closures are not performing consistently.
Seam adhesive is stringing, clumping, building up, or slowing production.
Window adhesive is affecting appearance, lay-flat performance, or machine reliability.
Changing paper, film, coatings, speeds, or drying conditions require a different adhesive approach.
A familiar product has been discontinued, repriced, or become difficult to obtain.
The manufacturer wants one responsive resource that understands both envelope adhesives and their application.
Joe and the HAR Team
