Permanent Courier Bag Closure Tape

Zhejiang Zhuolv New Materials Co., Ltd. is one of the leading manufacturers and suppliers of permanent courier bag closure tape in China, also supports customized service. If you're going to buy bulk durable permanent courier bag closure tape, welcome to get pricelist and free sample from our factory. Quality products and reasonable price are available.

Permanent Courier Bag Closure Tape is a pressure-sensitive sealing tape for courier, mailing and shipping bags made from HDPE and compatible PE films. It combines a film carrier, adhesive layer and release liner. Tape width, adhesive width, liner extension, roll length and adhesive position can be matched to the bag structure and converting process.

Product Construction
Film Carrier
The film carrier provides dimensional support through coating, slitting, winding and application. A 20–60 μm thickness range supports different tape constructions and bag closure requirements.
Pressure-Sensitive Adhesive
The adhesive provides the bonding interface between the tape and polyethylene film. Adhesive selection is based on film type, surface condition, application process and required closure construction.
Release Liner
The release liner protects the adhesive before application. A defined liner extension provides a practical grip area for removal during bag production and closure.

Key Product Features
Permanent Closure
The adhesive forms a lasting bond after application, making the tape suitable for courier and mailing bags requiring a permanent flap closure.
Controlled Adhesive Track
A 3–8 mm adhesive width can be specified within the overall tape width. This allows the bonding area to follow the available sealing surface.
Stable Roll Format
Tape width, roll length and core diameter are controlled production parameters. The selected roll format can be matched to material consumption and the intended converting process.

Technical Specifications

Application Compatibility
Courier Bags
Applied to polyethylene courier bags where a pressure-sensitive strip provides the closure between the flap and bag body.
Mailing Bags
Suitable for mailing bags requiring a defined adhesive track and removable liner before sealing.
Shipping Bags
Tape dimensions can be matched to bag width, flap dimensions and polyethylene film thickness for shipping packaging.
Security Packaging
The permanent closure construction can be used where opening the sealed flap is intended to leave visible evidence on the package.

Selection Guide
Bag Film
Confirm the actual HDPE or PE film before tape selection. Film thickness, surface treatment, printing and additives can affect adhesive contact.
Tape Width
Select overall tape width according to the available flap area and required closure geometry.
Adhesive Width
Define adhesive width separately when the bag requires a specific bonding area. The reference range is 3–8 mm.
Roll Format
Select roll length and core diameter according to the converting process, application frequency and material consumption.

Manufacturing Control
Adhesive Coating
Adhesive is applied according to the specified adhesive track and construction. Coating control maintains the defined bonding area along the roll.
Slitting
Master rolls are converted to the required finished width. Width, edge condition and adhesive position are controlled during slitting.
Winding
Roll winding is controlled to maintain consistent roll formation and unwinding characteristics during application.
Finished-Roll Inspection
Finished rolls are checked for width, adhesive position, liner condition, roll length, winding quality and appearance against the approved specification.

Custom Configuration
Tape Dimensions
Tape width, adhesive width, film thickness and liner extension can be specified according to the bag design.
Adhesive Position
Left-side, right-side or defined adhesive positioning can be configured for different flap layouts and sealing directions.
Roll Specifications
Roll length, core diameter, winding direction and packing quantity can be established according to the intended production process.

Application Qualification
Film Testing
Testing with the actual HDPE or PE film provides the basis for confirming adhesive compatibility with the production bag.
Process Testing
Application testing checks liner removal, tape positioning, feeding and closure behavior under the intended production conditions.
Sample Approval
A bag sample, existing tape sample or dimensional drawing can be used to confirm the required tape construction before regular production.

Procurement Information
Material Data
Provide film type, film thickness, surface condition, printing status and bag structure.
Tape Data
Specify tape width, adhesive width, liner extension, adhesive position, roll length and core diameter.
Process Data
Include application method, bag dimensions, feeding direction, operating temperature and expected tape consumption when available.
Reference Sample
A physical bag, current tape sample or technical drawing helps establish the required construction and dimensional specification.

Quality & Specification Control
Dimensional Checks
Tape width, adhesive width, liner position and roll length are checked against the approved production specification.
Roll Inspection
Roll formation, edge condition, winding consistency and surface appearance are reviewed during finished-roll inspection.
Application Verification
Adhesive contact and liner handling can be evaluated with the specified bag film before production approval.

FAQ
What films are suitable for Permanent Courier Bag Closure Tape?
The tape is intended for HDPE and compatible PE films. Final adhesive selection should be confirmed using the actual production film.
What tape widths are available?
The reference tape width is 9–17 mm, with an adhesive width of 3–8 mm.
Can the adhesive position be customized?
Yes. Left-side, right-side and defined adhesive positions can be specified according to the bag flap configuration.
Can roll length and core diameter be customized?
Yes. Reference roll lengths are 500–1,540 m and core diameters are 76–120 mm. Final dimensions are confirmed according to the application process.
What information is required for product selection?
Key information includes film type, film thickness, bag structure, tape width, adhesive width, liner extension, adhesive position, roll length, core diameter and application method.
How should the tape be qualified before production?
Testing should use the actual bag film and intended application process. This allows tape dimensions, liner handling and adhesive contact to be confirmed before production.