Joint Tape

Joint tapes are widely used in the splicing and overlapping of various roll materials such as paper, film, metal foil, etc. during processing.

Production Process Flow

From raw materials to finished product, every step is rigorously controlled to ensure consistent and reliable performance.

Substrate:
Insulating: Polyimide (PI), PET film (heat resistant 150-200°C).
Conductive: Metal foil (copper, aluminum) or conductive fiber cloth (requires composite insulation layer).
Adhesive:
High-temperature-resistant silicone (heat resistant above 200°C) or modified acrylic adhesive (balanced adhesion and heat resistance).
Conductive adhesive (for conductive joints): Add conductive fillers such as silver powder and carbon powder.
Auxiliary materials: Release paper, flame retardants (such as aluminum hydroxide), UV inhibitors (for outdoor use).

Cleaning and Activation:
Plasma treatment or chemical cleaning to remove oil and dirt from the substrate surface (metal foil requires anti-oxidation treatment).
Primer Application (optional): Enhances the bond between the adhesive and the metal/plastic substrate.

Insulating Tape:
Directly apply high-temperature-resistant adhesive, dry, and laminate with release paper (processing is the same as for conventional high-temperature tape). Conductive Tape:
Double-Sided Conductive Type: Conductive adhesive is applied to both sides of the metal foil, followed by drying and a protective film laminate.
Single-Sided Insulated Type: Insulating adhesive is applied to one side of the metal foil and conductive adhesive is applied to the other side.
Drying Conditions: Temperature control is performed in stages (e.g., 80°C → 120°C → 150°C) to prevent blistering of the adhesive layer.

Slitting: Cut according to the required joint width (commonly 1mm-20mm).
Die-Cutting (Key Step):
Punching: Processing into special-shaped structures such as perforated, L-shaped, and U-shaped (for tab connections).
Waste Disposal: Automatically removes scrap to ensure burr-free edges.

Hot Press Curing (Optional): High-temperature pressing improves the bond between the adhesive layer and the substrate.
Surface Coating:
Insulating Type: Spray-on ceramic coating (enhances arc resistance).
Conductive Type: Nickel/Tin plating (anti-oxidation, reduces contact resistance).

Anti-static packaging: Conductive tape must be packaged to prevent static electricity from attracting impurities.
Labeling: Indicate the conductive/insulating surface, temperature rating, and resistance value.

Polyester-tape4

Polyester tape

Polyimide tape

Kraft-paper-tape

Kraft paper tape

Joint Tape Series Specification Sheet

Name ltem No.Model Material Colour Adhesive Tack Adhesion Strength Tensile Resistance Temperature tolerance
N N/25mm N/25mm ℃
Polyester tape MY36 PET Red/Green/Blue Silicone 3↑ 8↑ 150↑ 200
Polyester tape MY26 PET Red/Green Silicone 5↑ 7↑ 120↑ 200
Polyester tape MY28 PET Red/Green Silicone 5↑ 8↑ 120↑ 200
Polyimide tape KA06 PI Yellow Silicone 1↑ 4.5↑ 110↑ 250
Kraft paper tape KT13H Kraft Yellow Acrylic Acid 5↑ 12↑ / 150
Polyester tape MY27 PET Transparent Acrylic Acid 2↑ 8↑ 120↑ 150
Polyester Double-Sided High-Temperature Tape DS18T PET Yellow Acrylic Acid 5↑ 15↑ 60↑ 150
Polyester Double-Sided High-Temperature Tape DS20T PET Yellow Acrylic Acid 9↑ 16↑ 60↑ 150
Cotton Double-Sided High-Temperature Tape DS90H CP White Acrylic Acid 5↑ 12↑ 15↑ 150
Cotton Double-Sided High-Temperature Tape DS312H CP White Acrylic Acid 5↑ 15↑ 15↑ 150

Technical Showdown: Paper vs. Fiberglass Mesh Tape

The choice between paper and fiberglass mesh is a foundational decision in drywall finishing. While both aim to create seamless, crack-free walls, their properties dictate their best use cases and application methods.

Paper Joint Tape

  • Superior Strength: Creates stronger joints than mesh on flat seams and is the only choice for strong corners.
  • Crisp Corners: Features a center crease, making it easy to fold and create sharp, professional inside corners.
  • Versatile Compound Use: Compatible with all-purpose drying-type compounds and setting-type compounds.
  • Requires Bedding Coat: Must be embedded in a layer of joint compound, which can be difficult for beginners and may cause bubbles.
  • Not Moisture Resistant: Can soften, degrade, or promote mold growth if it becomes wet.

Fiberglass Mesh Tape

  • Self-Adhesive & Easy: Simple to apply to flat seams without a pre-applied bedding coat of mud, ideal for beginners.
  • Mold & Moisture Resistant: Inorganic material will not rot or degrade, making it suitable for damp areas like bathrooms.
  • Resists Bubbling: The open mesh design allows air to pass through, eliminating the risk of air bubbles forming under the tape.
  • Requires Setting Compound: Must be used with a chemically hardening (“hot mud”) compound for the initial coat to achieve proper strength.
  • Not for Corners: Cannot be folded to create a sharp, strong inside corner; it is only suitable for flat seams and outside corner beads.

Functions, Uses, and Applications

Joint tape is an essential material in drywall installation and repair. Its core function is to reinforce seams between drywall panels, preventing cracks and creating a smooth, seamless surface for finishing.

Reinforcement & Strength

Embeds into joint compound to bridge the gap between drywall sheets, providing tensile strength to the seam and preventing structural weakness.

Crack Prevention

Absorbs stress from minor structural movements, temperature changes, and humidity shifts, significantly reducing the likelihood of cracks appearing over time.

Surface Finishing

Creates a uniform and stable base for joint compound (mud), allowing for a smooth, flat finish that seamlessly blends the panels together.

Primary Application Fields

Our product is widely used in new construction, remodeling, and repair for both residential and commercial buildings:

  • Drywall Finishing: Taping seams between adjacent drywall panels on walls and ceilings.
  • Inside/Outside Corners: Reinforcing and finishing 90-degree corners for durability and a crisp appearance.
  • Patch & Repair: Fixing holes, cracks, and other damage in existing drywall or plaster surfaces.
  • Cement Board Seams: Used in bathrooms and kitchens to reinforce joints in cement backer board before tiling.

Quality Standards & Certifications

We are committed to delivering the highest quality products, a promise backed by strict internal standards and authoritative third-party certifications.

Appearance Standard

Tape surface is smooth and free of defects like bubbles, scratches, or impurities. Edges are clean with no adhesive bleed.

Performance Consistency

Each batch is tested for key performance indicators like peel strength to ensure stable and reliable performance.

Dimensional Tolerance

Strict control over width and thickness tolerances ensures high consistency for automated production lines.

Third-Party Inspection & Certification

ISO 9001:2015

Quality Management System certification, demonstrating our ability to consistently produce high-quality products.

RoHS Directive

Products are free of hazardous substances, complying with EU environmental standards for user and environmental safety.

REACH Regulation

Compliant with EU chemical regulations, ensuring a high level of protection for human health and the environment.