Envelope with silicone tape Office Products HK B4 250×353 mm 90 gsm 10 pcs brown

Envelope with silicone tape Office Products HK B4 250×353 mm 90 gsm 10 pcs brown is a pack of ten B4-format kraft paper envelopes designed for mailing and filing documents. Made from 90 g/m² brown kraft paper, each envelope measures 250 × 353 mm and features a silicone self-adhesive tape that enables fast and reliable sealing without additional glue or moistening. The construction is intended to protect papers, brochures and catalogs during handling and transit while maintaining a simple, professional appearance.

Advantages

The silicone tape provides consistent adhesion and keeps the flap securely closed until intentionally opened, supporting repeated handling in office workflows. The 90 gsm kraft paper offers a balance of durability and flexibility, resisting tears and creases under normal mailing and filing conditions. The brown kraft surface is suitable for writing or attaching labels and preserves a neutral, professional look for business correspondence and internal document storage.

Suitable for

• Mailing documents, brochures and catalogs in B4 format
• Internal filing and archiving of papers that require a secure closure
• Preparation of invoices, contracts and printed materials for dispatch
• Temporary storage and transport of loose sheets and folded documents

Key specifications

• Format: B4 (250 × 353 mm)
• Material: brown kraft paper
• Paper weight: 90 g/m²
• Closure: silicone self-adhesive tape
• Quantity: 10 envelopes per pack
• Colour: brown

How to use

Insert documents or printed materials into the envelope so they lie flat and are aligned with the edges. Remove the protective strip from the silicone tape and press the flap firmly along the adhesive area to secure the closure. For heavier contents, press along the entire flap to ensure full contact of the adhesive. To reopen, peel the flap carefully to avoid tearing the paper if the contents need to be accessed and resealed.

Usage recommendations

Store envelopes in a dry, cool place away from direct sunlight and high humidity to preserve adhesive performance. For international or registered mail, consider supplementary sealing or packaging if documents require extra protection. Use a label or pen suitable for kraft paper when addressing envelopes to ensure legibility.