In high-end architectural cladding, white appliance manufacturing, and structural metal fabrication, fasteners like rivets and spot welds create visible surface dimples, stress concentration points, and rust risks. The 3M VHB General Purpose Series 4950 Family-comprising 3M 4920, 3M 4930, 3M 4950, 3M 4955, and 3M 4959-is the global benchmark for 4950 Family - General & Rigid Bonding applications.
Engineered with a firm, closed-cell white acrylic foam core and a high-holding acrylic adhesive system, this Acrylic Foam Tape product line delivers high tensile and dynamic shear strength. It is specially designed to bond flat, rigid substrates such as stainless steel, aluminum, glass, high surface energy (HSE) plastics, and painted metals, creating a clean, seamless white joint profile.
Core Material Architecture
Firm Closed-Cell White Acrylic Core
Provides high internal cohesive strength and resistance to compressive creep, ensuring static load resistance without sagging over extended lifespans.
Clean White Appearance
Blends invisibly with white appliance housings, architectural glass frames, and white powder-coated metal panels, maintaining high visual aesthetics without dark foam line bleed.
General-Purpose Acrylic Adhesive Chemistry
Wets out quickly on smooth, high surface energy metals and glass, forming a permanent moisture, dust, and environmental barrier.
Individual Model Technical Profiling & Thickness Matrix
The 4950 Family features a firm white acrylic foam core offered in five distinct thickness profiles to accommodate varied gap clearances, load-bearing requirements, and joint design constraints:
① 3M 4920 (0.4 mm / 16 mil Ultra-Thin Rigid VHB Tape)
Tape Thickness: 0.4 mm (0.016 in. / 16 mil)
Key Attribute: Ultra-thin white profile designed for tight-clearance assemblies, sleek metal-to-metal joints, and flush electronic panel bonding where minimum foam line thickness is required.
Best For: Sleek display frame mounting, electronic bezel bonding, and thin sheet metal stiffener attachment.
② 3M 4930 (0.6 mm / 25 mil Low-Profile Structural Tape)
Tape Thickness: 0.6 mm (0.025 in. / 25 mil)
Key Attribute: Low-profile rigid foam tape offering high shear resistance and fast initial tack for smooth metal and glass surfaces.
Best For: Interior architectural trim, glass partition mounting, and cabinet door stiffener attachment.
③ 3M 4950 (1.1 mm / 45 mil Flagship Industry Standard)
Tape Thickness: 1.1 mm (0.045 in. / 45 mil)
Key Attribute: The global benchmark white VHB tape. Delivers an exceptional balance of tensile holding power, shock absorption, and long-term thermal expansion resistance.
Best For: Commercial appliance panel bonding, architectural metal cladding, HVAC housing assembly, and signage stiffener mounting.
④ 3M 4955 (2.0 mm / 80 mil Heavy-Duty Gap-Filling Tape)
Tape Thickness: 2.0 mm (0.080 in. / 80 mil)
Key Attribute: Thick rigid foam profile designed to bridge larger gaps, absorb heavy structural vibrations, and compensate for thermal expansion between mismatched rigid materials.
Best For: Heavy architectural facade panels, trailer side-wall skin bonding, and outdoor equipment enclosure sealing.
⑤ 3M 4959 (3.0 mm / 120 mil Extra-Thick Structural Bonding Tape)
Tape Thickness: 3.0 mm (0.120 in. / 120 mil)
Key Attribute: The thickest variant in the 4950 Family. Delivers maximum gap-filling capacity, extreme impact shock absorption, and deep stress relaxation over rigid, thick structural assemblies.
Best For: Heavy industrial machinery panels, outdoor architectural curtain walls, and heavy-duty structural steel frame joining.
Technical Specifications Reference
|
Technical Parameter |
3M 4920 |
3M 4930 |
3M 4950 |
3M 4955 |
3M 4959 |
|---|---|---|---|---|---|
|
Foam Core Density |
Firm White Acrylic |
Firm White Acrylic |
Firm White Acrylic |
Firm White Acrylic |
Firm White Acrylic |
|
Foam Color |
White |
White |
White |
White |
White |
|
Adhesive Type |
Multi-Purpose Acrylic |
Multi-Purpose Acrylic |
Multi-Purpose Acrylic |
Multi-Purpose Acrylic |
Multi-Purpose Acrylic |
|
Tape Thickness |
0.4 mm (16 mil) |
0.6 mm (25 mil) |
1.1 mm (45 mil) |
2.0 mm (80 mil) |
3.0 mm (120 mil) |
|
Release Liner Type |
Paper Liner |
Paper Liner |
Paper Liner |
Paper Liner |
Paper Liner |
|
Short-Term Temp Limits |
Up to 149°C (300°F) |
Up to 149°C (300°F) |
Up to 149°C (300°F) |
Up to 149°C (300°F) |
Up to 149°C (300°F) |
|
Long-Term Temp Limits |
Up to 93°C (200°F) |
Up to 93°C (200°F) |
Up to 93°C (200°F) |
Up to 93°C (200°F) |
Up to 93°C (200°F) |
Primary Industrial Application Fields
3M 4950 Family - General & Rigid Bonding tapes serve as reliable mechanical fastener replacements across high-demand industrial assembly sectors:
Commercial White Appliances & HVAC Equipment: Mounting glass doors, control bezels, white enamel panels, and internal reinforcement ribs on refrigerators, washing machines, and air conditioners.
Architectural Wall Cladding & Signage: Blind-fastening white aluminum composite panels (ACP), architectural glass, white acrylic lettering, and outdoor light box frames without visible screw heads.
Commercial Transportation & Specialty Vehicles: Structural bonding of white aluminum roof skins, exterior side panels, and interior composite walls on delivery vans, trucks, and emergency vehicles.
General Metal Fabrication & Electronics: Joining painted sheet metal to aluminum extrusions, attaching access doors, and sealing outdoor electrical control boxes.
Slitting and die-cutting firm acrylic foam tapes requires high-precision rotary tooling to maintain pristine edge geometry without foam compression or adhesive stringing. STK Tape provides full fabrication capabilities:
Custom Roll Slitting: Precision-slits master rolls into exact customer-specified widths (e.g., 6mm, 12mm, 19mm, 25mm, up to 1000mm) with clean, non-telescoping roll faces.
Precision Die-Cutting & Kiss-Cutting: Converts VHB tape into kiss-cut roll shapes, mounting squares, washers, window frame gaskets, and custom geometric parts according to CAD/DXF drawings.
Extended Pull-Tab Integration : Equips die-cut VHB foam gaskets and mounting pads with extended non-adhesive pull-tabs, allowing assembly line operators to quickly peel the liner and position structural parts without touching active adhesive edges.
Our factory & Equipment
Custom Adhesive Tape Solutions
We provide comprehensive adhesive tape customization and converting services, including custom thickness, size, core, packaging, release liners, and die-cutting solutions to meet your specific application requirements.
Custom Thickness
Custom thickness of adhesive tape is available according to customer's request.
Custom Size
Custom width/length of adhesive tape is available according to customer's request.
Custom Core
Custom core diameter of adhesive tape is available according to customer's request.
Custom Package
Custom package of adhesive tape is available according to customer's request.
Custom liner
Adhesive tape with release liner is available according to customer's request.
Die-cut Service
Die-cutting of adhesive tape is available according to customer's request.
Manufacturing & Delivery Process
Coating Adhesive
Rewinding Roll
Cutting Roll
Quality Inspection
Roll Packing
Delivery
Hot Tags: 3m vhb white acrylic foam tape 4950 family | 4920, 4930, 4950, 4955 & 4959, China 3m vhb white acrylic foam tape 4950 family | 4920, 4930, 4950, 4955 & 4959 manufacturers, suppliers, factory, 3M 9448, 3M Double Coated Tissue Tape 9080A, 3m scotch brand 471 tape, Electrical Insulation, Emergency cable repair tape, UV resistant adhesive tape
