Introducción
A self-seal envelope — also called peel-and-seal — has a latex adhesive strip on the flap that seals with simple pressure. No licking, no water, no tape. Peel off the release strip, press the flap down, and it’s sealed.
For anyone sealing envelopes in volume, self-seal is a genuine time-saver and the modern default for direct mail and billing. This guide covers how the closure works, how it compares to gummed flaps, and the uses that benefit most.
What Self-Seal Is
Self-seal uses a pressure-sensitive latex adhesive.
| Elemento | Función |
|---|---|
| Latex strip | Adhesive on flap |
| Release strip | Covers adhesive until use |
| Pressure seal | Press to close |
| No moisture | No licking |
The mechanics:
| Paso | Acción |
|---|---|
| 1 | Peel release strip |
| 2 | Fold flap |
| 3 | Press to seal |
| 4 | Done — sealed |
Self-Seal vs Gummed Flap
The two main closure types differ in convenience and cost.
| Factor | Autosellante | Goma |
|---|---|---|
| Sellado | Pressure | Moisture (lick) |
| Velocidad | Rápido | Más lento |
| Hygiene | Limpio | Licking required |
| Costo | Ligeramente más alto | Más bajo |
For volume mailers, the speed difference matters:
| If you seal… | Elige |
|---|---|
| Hundreds at a time | Autosellante |
| Ocasionalmente | Gummed (cheaper) |
| Want speed | Autosellante |
The Peel-and-Seal Strip
The release strip is what makes self-seal work.
| Característica | Detalle |
|---|---|
| Material | Latex adhesive |
| Release liner | Protects until use |
| Resistencia del sello | Strong, permanent |
| Vida útil | Larga |
The closure is permanent once sealed — it won’t reopen cleanly.
| Característica | Implicación |
|---|---|
| Strong seal | Seguro |
| Permanent | Not reusable |
| Consistent | Confiable |
Casos de uso
Self-seal envelopes shine in high-volume, time-sensitive mail.
| Caso de uso | Why self-seal |
|---|---|
| Correo directo | Fast sealing at volume |
| Facturación | Efficient, hygienic |
| Invitaciones | Clean, easy |
| Correo comercial | No licking |
Two uses deserve note — direct mail operations seal thousands at a time, and billing departments value the speed and hygiene.
| Beneficio | Por qué importa |
|---|---|
| Velocidad | Seal in volume |
| Hygiene | No licking |
| Conveniencia | One less step |
For direct-mail design context, see our direct mail envelope design .
Tamaños y formatos
Self-seal is available across standard envelope sizes.
| Tamaño | Uso |
|---|---|
| #10 | Business, billing |
| #9 | Reply |
| A7 | Invitación |
| 9×12 | Documents |
The closure is the same regardless of size — it’s a flap feature, not a size constraint.
| Tamaño | Self-seal available? |
|---|---|
| #10 | Sí |
| A7 | Sí |
| 9×12 | Sí |
| Personalizado | A menudo |
Choosing Self-Seal
Una guía rápida de decisión:
| If you… | Elige |
|---|---|
| Seal in volume | Autosellante |
| Want no licking | Autosellante |
| Budget-tight, occasional | Goma |
| Need reusable | Clasp or string-button |
Para la comparación completa de cierres, consulte nuestra cierres de sobres comparados .
Conclusión
Self-seal envelopes use a peel-and-seal latex strip that closes with pressure — no licking, fast sealing, and a clean, permanent seal. They’re the modern default for direct mail, billing, and any volume sealing task. For the full closure landscape, see our cierres de sobres comparados .
Sealing envelopes in volume? Solicite una cotización for self-seal envelopes.