3M 444
Harmonization Code : 3907.30.00.40 | Epoxy Mold Compounds containing by weight more than 70 % silicon dioxide
Main features
- Fast Initial Lamination Adhesion
- Stable PET Converting Carrier
- Foam and Gasket Attachment
Product Description
3M Double Coated Tape 444 is a pressure-sensitive laminating tape built with 3M Adhesive 300 on both sides of a 0.5 mil PET film carrier and a densified kraft release liner. The medium-firm acrylic adhesive delivers high initial adhesion to foams, fabrics, coated papers, polyethylene, and other high- and low-surface-energy plastics. Its film carrier adds dimensional stability for slitting and die-cutting, while different adhesive thicknesses on the two faces promote wet-out during assembly. The tape is used for foam lamination, gasket attachment, plastic-film bonding, splicing, and diagnostic test-strip assembly.
Key features
- Rapid lamination adhesion: Quick-flowing 3M Adhesive 300 develops high initial adhesion for efficient laminating.
- Stable converting carrier: A 0.5 mil PET film improves handling and dimensional stability during slitting and die-cutting.
- Low-surface-energy attachment: The acrylic adhesive bonds foams and plastics such as polyethylene for gasket and laminate assembly.
Applications
Applications include foam lamination, gasket attachment, plastic-film bonding, splicing, and medical diagnostic test-strip assembly.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Other Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Tape caliper | 3.9 | mil | Typical product construction |
| Carrier material | PET film | Double-coated carrier | |
| Carrier thickness | 0.5 | mil | PET film |
| Face-side adhesive thickness | 2 | mil | 3M Adhesive 300 |
| Liner-side adhesive thickness | 1.4 | mil | 3M Adhesive 300 |
| Release liner | 55# densified kraft | 3.2 mil caliper |
