High-Bond Double-Coated Closure Tape

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

High-Bond Double-Coated Closure Tape is a permanent sealing tape with pressure-sensitive adhesive coated on both sides of a film carrier. A release liner protects the adhesive before application. The tape is specified for PE, PP and OPP flexible packaging used for mailer bags, garment bags, protective bags and film-based shipping packaging.

Product Construction
Film Carrier
The film carrier forms the dimensional base of the tape. Carrier thickness affects flexibility, tape profile and handling during coating, slitting and application.
Double-Sided Adhesive
Pressure-sensitive adhesive is applied to both sides of the carrier. Adhesive thickness and coating level are selected according to the packaging surface, sealing area and required bond development.
Release Liner
The release liner protects the adhesive before application and controls liner removal during use. PET film or paper liner constructions can be specified according to the tape format and application process.

Key Features
Permanent Closure
The adhesive construction is intended for closures that remain bonded after application. Bond development is affected by substrate, surface condition, contact pressure and application temperature.
Controlled Tape Profile
Carrier and adhesive thickness are controlled within the specified range to maintain a defined sealing layer. This supports packaging designs with limited closure space.
Stable Roll Handling
Controlled tape dimensions, winding and liner release support consistent feeding, positioning and cutting during packaging conversion.

Reference Specifications

Suitable Packaging Materials
PE Film
PE film is used for flexible bags and mailers. Film thickness, additives and surface condition should be considered when selecting the adhesive construction.
PP and OPP Film
PP and OPP films require an adhesive system matched to the actual contact surface. Tape width should correspond to the available sealing area.
Laminated Structures
For laminated packaging, the outer contact layer forms the bonding interface. Evaluation should use the finished laminate rather than an individual film layer.

Application Areas
Courier and Mailer Bags
The tape forms a permanent sealing line along the bag flap. Width, adhesive position and roll length can be matched to the bag construction.
Garment Packaging
Garment bags can use narrow closure tape where the sealing area requires controlled tape width and thickness.
E-Commerce Packaging
Flexible shipping bags can incorporate the tape into the closure flap for a defined sealing process during package preparation.
Bubble and Protective Bags
Protective bags and envelopes can use double-coated tape to join flexible film layers within a controlled sealing area.

Production Compatibility
Manual Application
Manual application requires accurate positioning and firm contact pressure across the bonding area. Tape width should correspond to the flap geometry.
Semi-Automatic Application
Core size, roll diameter, liner release and winding condition should correspond to the application process for stable tape feeding.
Continuous Production
Continuous converting requires controlled tape dimensions, adhesive position and roll geometry. Unwind behavior should be checked at the intended operating speed.

Specification Selection
Tape Width
Select the width according to flap dimensions and required bonding area. Narrow widths suit restricted sealing zones, while wider widths provide a larger contact area.
Adhesive Position
Left, right or center adhesive positioning can be specified according to bag construction, feeding direction and sealing layout.
Roll Length
Roll length should correspond to production volume, application frequency and changeover requirements. Core size and finished roll diameter should be considered together.

Quality Control
Dimensional Inspection
Tape width and total thickness are checked against the approved specification. Roll length and core dimensions are controlled according to the specified format.
Adhesive Evaluation
Adhesion is evaluated on the intended packaging substrate. Initial tack, bond development and holding performance are assessed under defined test conditions.
Roll Inspection
Finished rolls are checked for winding condition, edge quality, liner release and surface appearance before packing.

Customization Options
Dimensions
Tape width, total thickness, carrier thickness and roll length can be specified according to the sealing area and packaging construction.
Adhesive Configuration
Adhesive construction and coating level can be selected according to substrate characteristics, application temperature and required closure performance.
Packaging Format
Core diameter, roll configuration, liner type, roll quantity and outer packaging can be specified according to storage, handling and production requirements.

Selection Checklist
Before confirming the tape specification, define:
Packaging substrate and contact layer
Film structure and surface condition
Required permanent closure
Tape width and total thickness
Adhesive position
Application temperature
Application method
Roll length and core diameter
Packaging and inspection requirements

FAQ
Is this tape suitable for permanent bag sealing?
Yes. The double-coated pressure-sensitive construction is intended for permanent closure on flexible packaging.
Can it be used on PE bags?
Yes. The adhesive construction can be selected for PE film. Testing on the actual production film provides the basis for confirming bonding performance.
Can the adhesive position be customized?
Yes. Left, right and selected center-position configurations can be specified according to the bag structure and application layout.
What information is required for specification confirmation?
Provide the substrate, film structure, tape width, total thickness, adhesive position, roll length, core diameter and application method.
Can samples be tested before production?
Yes. Testing on the intended packaging material allows dimensions, liner release and adhesive performance to be confirmed before the final specification is approved.