^{3M Tape 1076 Polyester Film/Paper-Backed Filament Tape with Oil-Saturable Backing Acrylic Adhesive}

^{3M 聚酯薄膜膠帶 1076 丙烯酸膠黏劑}

3M Electrical Filament Tape 1076 is made of an electrical-grade paper backing, reinforced with scrim glass filaments and an oil-compatible acrylic pressure-sensitive adhesive. Unlike conventional film-backed tapes, this products’ paper backing construction provides for complete impregnation and saturation of the tape in adjacent layers of insulation. This key feature minimizes the possibility of
impregnation voids leading to corona discharges, with subsequent deterioration of insulating materials.
Polyester film used in making traditional designed filament tapes does not absorb transformer oil. The unique coating on the back side of the 1076 tape promotes exceptional bonding of the diamond paper
insulation epoxy during the transformer baking process.

Applications
The primary application for 1076 filament tape is holding down magnet wire, copper strips (sheets) and insulation materials during the demanding coil winding process. Once in place in the transformer coil, the
tape provides a second key performance attribute by saturating in the transformer oil. These attributes together make 1076 filament tape the right choice for oil-filled transformers. A transformer coil is manufactured one of two ways, first by winding magnet wire on a core with layers of secondary insulation
between the layers of magnet wire and secondly by using copper sheets on a core with layers of primary insulation between the layers of copper sheets. A core application for 1076 filament tape is holding down the magnet wire at the beginning and end of each layer. This is also referred to as the start and finish
between magnet wire turns. In addition, 1076 filament tape is used to hold down the insulation sheet layers between magnet wire layers.

Filament tape 1076 is particularly well suited for these applications because of the product’s high tensile strength. This allows the tape to withstand the stress applied to the tape when the windings are being applied at high winding machine speeds.

Filament tape 1076 provides five core performance benefits for critical oil-filled transformer applications.
1. Good initial adhesion of the tape to magnet wire, strip copper and insulation materials
2. Stable adhesion even after long exposure to transformer fluids
3. Stiffness for excellent handling, which promotes operator efficiency during application of the tape during coil winding operations
4. Saturable backing for air entrapment resistance which minimizes the trapped air between adhesive layers in the applied tape

5. Compatibility with diamond paper insulation thermal bonding with back side of tape
6. Easy consistent unwind to promote operator efficiency

抗溶劑、抗剪切能力極佳的膠黏劑 ﹔抗張強度大，使其可以在有絕緣油變壓器中作固定使用

^{3M Tape 1276 Polyester Film/Paper-Backed Filament Tape with Oil-Saturable Backing Acrylic Adhesive  停產 No longer Avaialbe}

^{3M 聚酯薄膜膠帶 1276 丙烯酸膠黏劑}

3M Filament Reinforced Electrical Tape 1276 is a 9 mil glass filament-reinforced paper backing with high-shear strength acrylic adhesive. Solvent-resistant, it offers good tensile strength for holding in oil-transformer applications.

3M Electrical Tape 1276 is made of an electrical-grade paper backing, reinforced with parallel glass filaments and an oil-compatible acrylic pressure-sensitive adhesive.
Unlike conventional film-backed tapes, this products' paper backing construction provides for complete impregnation and saturation of the tape in adjacent layers of insulation. This feature minimizes the possibility of voids leading to corona discharges, with subsequent deterioration of insulation materials. Polyester film used in making traditionally designed filament tapes does not absorb transformer oil. The unique coating on the back side of 1276 tape promotes exceptional bonding of the diamond paper insulation epoxy during the transformer baking process.

· Stable adhesive even after long exposure to transformer fluids
· Saturable backing for air entrapment resistance
· Minimal air trapped between adhesive layers in tape
· Minimum contamination of oil power factor and interfacial tension
· Stiffness for superior handling, which promotes operator efficiency
· Diamond paper insulation thermal bonding compatibility with back side of tape

Thickness: 9.0 mils (.228 mm)
Breaking strength at break: 275 lbs./in (481 N/10mm)
Elongation at break: 5%
Adhesion to steel: 40 oz/in (4.4 N/10,,)
Dielectric breakdown: 3500V
Electrolytic corrosion factor: 1.0

抗溶劑、抗剪切能力極佳的膠黏劑 ﹔抗張強度大，使其可以在有絕緣油變壓器中作固定使用