Production Line

High Temperature Tape Production Process

一. Raw Material Inspection & Warehousing

1. Base Material Inspection: Check thickness, appearance, heat resistance and tensile strength of PI film, PET film, PTFE film and fiberglass cloth.

2. Adhesive Inspection: Test solid content, viscosity, heat resistance grade and environmental indicators of silicone adhesive and acrylic adhesive.

3. Auxiliary Material Inspection: Inspect release film/release paper, paper tubes, solvents, curing agents and color pastes.

4. Qualified raw materials will be put into storage; unqualified materials will be isolated and returned to suppliers.

二. Adhesive Mixing & Preparation

1. Weigh adhesives, curing agents, functional additives and solvents according to standardized formulas.

2. Conduct high-speed dispersion and stirring, then filter to remove impurities.

3. Defoam statically and record batch number, viscosity and solid content for quality traceability.

三. Base Material Surface Treatment

1. PI & PET Film: Corona treatment to enhance surface adhesion of substrates.

2. Fiberglass Cloth: Impregnate with silane coupling agent and dry thoroughly to seal fabric gaps.

3. PTFE Material: Sodium-naphthalene etching or plasma treatment to improve adhesive bonding performance.

四. Precision Coating

1. Unwind base materials with automatic deviation correction and leveling system.

2. Adopt micro-gravure coating or blade coating to ensure uniform adhesive thickness.

3. Complete single-side coating or double-side lamination coating as required; avoid missing coating, bubbles and particle defects.

五. Segmented Drying & Curing

1.Adopt multi-section temperature-controlled oven for staged solvent volatilization and adhesive cross-linking curing:

- Low temperature section: Volatilize solvents slowly to prevent bubble generation

- Medium temperature section: Complete preliminary curing of adhesive layer

- High temperature section: Realize deep curing for stable high-temperature resistance

2.Temperature Standard by Product:

- PET masking tape: Max curing temperature ≤ 200℃

- PI tape & fiberglass insulating tape: 260℃ - 280℃

- PTFE Teflon tape: 360℃ - 380℃

六. Rewinding & Aging Treatment

1. Rewind coated materials into standard master rolls after coating.

2. Place master rolls in constant-temperature aging room for 24-72 hours to promote full cross-linking of adhesives.

3. Aging process ensures no adhesive residue and stable peeling force under long-term high-temperature working environment.

七. Secondary Rewinding

1. Eliminate internal stress of master rolls via secondary rewinding.

2. Remove defective sections, calibrate length and surface flatness for further slitting.

八. Precision Slitting

1. Slit rolls into customized widths according to customer orders.

2. Strictly control dimensional accuracy without burrs and adhesive overflow.

3. Complete small roll rewinding and accurate length counting.

九. Die Cutting (Customized Processing)

1. Produce customized shaped gaskets and insulating parts by flat die cutting or rotary die cutting.

2. Finish waste removal and finished product slicing.

3. Inspect overall dimension and appearance quality strictly.

十. Finished Product Inspection

1. Appearance Inspection: Free of dirt, adhesive overflow and joint defects

2. Dimensional Inspection: Check width, thickness and overall length

3. Performance Test: High temperature resistance test, peeling force test, residue-free test, insulation voltage resistance test

4. Environmental Certification Check: Comply with RoHS, REACH and other international environmental standards

十一. Packaging & Warehouse Delivery

1. Pack finished tapes with moisture-proof protective film; mark specification, temperature resistance grade, batch number and quantity on outer cartons.

2. Input product information into system and finish warehousing management.

3. Arrange shipment according to customer orders.

OEM/ODM Capability

OEM & ODM Service Introduction

English Version (for International & overseas clients)

Yiwu VISI New Materials Co., Ltd. provides professional OEM & ODM services for high-temperature adhesive tapes.

We support customized production based on customers’ brand, specifications, packaging and performance requirements.

OEM Service

Customers provide brand logo, packaging design and product standards.
We undertake mass production, slitting, die-cutting, packaging and delivery.
Stable quality, short lead time, flexible MOQ to meet market demand.

ODM Service

We provide full-chain solutions from formula R&D, product design, substrate selection to performance testing.
Customize special tapes for new energy, PCB, photovoltaic, industrial coating and electrical insulation fields.
Develop high-temperature resistant, flame-retardant, low-residue, high-voltage insulation products according to application scenarios.

Our factory has mature coating, slitting and die-cutting lines, strict quality control system, and complete environmental and safety certifications.

R&D Capacity

R&D Research & Development Introduction

We have built an independent professional adhesive material R&D laboratory, focusing on formula optimization, adhesive upgrading and performance testing for high-temperature resistant tapes. Our R&D team has rich experience in silicone adhesive and polymer film material research, continuously iterating core formulas to solve industry pain points such as high-temperature residual glue, poor insulation performance and adhesive failure in extreme working conditions.

Core R&D Directions

Upgrade high-temperature silicone glue to improve durability under 260℃-380℃ long-term high temperature environment
Develop low-ion, halogen-free and flame-retardant adhesive formulas to match semiconductor, new energy battery and photovoltaic high-standard requirements
Optimize substrate surface treatment technology to enhance bonding firmness and avoid peeling off
Customize exclusive material solutions according to customers' actual application scenarios

All raw materials and finished products undergo strict laboratory tests including high-temperature aging test, insulation withstand voltage test, peeling force test and corrosion resistance test before mass production. We support free sample testing and customized formula R&D, providing reliable technical backing for global customers' OEM and ODM orders.