Permanent Security Bag Closure Tape

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

Permanent Security Bag Closure Tape is a pressure-sensitive closure tape for HDPE and compatible PE bags. The tape consists of a film carrier, adhesive layer and release liner. Width, adhesive track, liner extension, roll length and core size can be specified to match the bag construction and application process.

Product Construction
Film Carrier
The film carrier provides the dimensional base for coating, slitting and winding. A reference thickness of 20–60 μm supports different bag and converting requirements.
Pressure-Sensitive Adhesive
The adhesive layer provides contact with the bag film. Adhesive selection is based on film type, surface condition, application temperature and required closure performance.
Release Liner
The release liner protects the adhesive before application. Its extension can be adjusted to provide a defined area for liner removal.

Key Specifications

Selection Parameters
Tape Width
Tape width should follow the sealing flap and available bonding area. The 9–17 mm range covers common narrow closure formats.
Adhesive Width
The adhesive track is available from 3–8 mm. Selection should be based on the required contact area and bag closure geometry.
Liner Extension
A 2–10 mm liner extension provides a defined removal area. The required dimension depends on flap design and the application method.
Roll Length
Reference roll lengths range from 500 to 1,540 m. The suitable length depends on production volume, roll changes and application format.

Film Compatibility
HDPE Film
HDPE is commonly used for security, mailing, shipping and industrial bags. Adhesive contact depends on the actual film surface and formulation.
Film Thickness
A reference film range of 20–60 μm accommodates different bag constructions. Final selection should be based on the actual production film.
Surface Condition
Printing, coatings, additives and surface residue can affect adhesive contact. Production-film testing provides a direct basis for confirming compatibility.

Permanent Closure Performance
Initial Tack
Initial tack establishes contact when the adhesive is pressed onto the film. Pressure and contact area affect the initial bond.
Bond Development
Bond strength develops after application as the adhesive remains in contact with the film. Application temperature, pressure and dwell time should be considered during process testing.
Closure Integrity
The adhesive track should remain within the intended sealing area. Tape width, adhesive width and liner configuration need to match the bag flap dimensions.

Application Areas
Security Bags
Used for bags requiring a permanent adhesive closure after filling or document insertion.
Mailing Bags
Suitable for polyethylene mailing bags where the adhesive strip forms part of the closure structure.
Shipping Bags
Applied to shipping and courier bags requiring a defined adhesive sealing area.

Industrial Poly Bags

Used for polyethylene bags containing components, parts, materials and packaged goods.

Converting Compatibility
Manual Application
Liner extension provides a defined grip area for hand application. Tape width should correspond to the available sealing flap.
Automated Application
Core diameter, roll length, winding condition and liner release should match the application process and roll-handling requirements.
Bag Construction
Tape selection should be reviewed with film thickness, flap width, sealing position and surface condition.

Manufacturing & Quality Control
Adhesive Coating
The adhesive is applied to the specified coating area. Process control focuses on coating coverage, width and position.
Slitting
Coated master rolls are slit to the required width while controlling edge condition, adhesive alignment and liner position.
Winding
Rolls are wound under controlled tension to maintain stable roll formation and consistent unwinding.

Finished-Roll Inspection

Finished rolls can be checked for tape width, adhesive width, liner extension, roll length, core size, winding condition and visual appearance.

Specification Confirmation
Film Information
Provide film type, film thickness, surface condition and bag construction.
Tape Information
Specify tape width, adhesive width, liner extension, roll length, core diameter and adhesive position.
Process Information
Application method, application temperature, sealing speed and production format help determine the required configuration.
Sample Matching
A production film sample, finished bag or dimensional drawing can be used to confirm tape dimensions and adhesive suitability before production.

FAQ
What films are suitable for Permanent Security Bag Closure Tape?
The tape is intended for HDPE and compatible PE films. Compatibility 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. Final dimensions can be specified according to the bag structure.
Can the liner extension be customized?
Yes. The reference liner extension is 2–10 mm. The required dimension depends on the closure design and liner removal method.
What information is needed for specification matching?
Film type and thickness, bag construction, tape width, adhesive width, liner extension, roll length, core diameter and application method provide the main specification inputs.
Can a sample be used for confirmation?
Yes. A production film sample, finished bag or dimensional drawing can be used to confirm dimensions, adhesive contact and application requirements before production.