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Electrical insulating materials

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Adhesive tapes with metal foil

Adhesive tapes with metal foil

Adhesive tapes with metal foil

 

Electrically conductive metal tapes prevent interferences, vhich can be caused by other electrical componets and devices. Their applikation is necessery in the field EMV/ESD, where is required shielding, grounding and seduction electrostatic charge.

Area of applikations:

  • manufacture of printed circuit boards
  • changes and corrections of printed circuits
  • shielding of active components
  • cable,connectors,couplings,terminals ,contacs shielding etc.
  • grounding of electrical components
  • grounding of appliances and cabinnts
  • lead of electrostatic charges in underground facilities
  • lead of electrostatic charges in closed rooms (testing laboratory)
  • shielding of the transmitting and receiving devices
  • shielding in the microelectronics

 

Adhesive tape

Material

of carrier

Thickness of carrier

Total thickness

Adhesive type

Strength in  conglutination          N/cm

 

Tensile strength   N/cm

Interior insulating resistance

Exterior insulating resistance

Elongation at break %

Temperature class  °C

4577

copper foil

0,038

0,076

A/Carbon

15

163

0,004-0,01

0,57

6

0/+120

4384

copper foil

0,038

0,076

A/ilver

10,25

163

0,002

0,57

6

0/+120

4385

galvanized

copper foil

0,038

0,076

A/Silver

10,25

16

0,002

0,58

6

10/+135

4386

aluminium

foil

0,050

0,089

A/Silver

10,25

123

0,009

0,70

4,4

0/+120

4388

without

carrier

-

0,051

A/Silver

19,8

-

0,005

>10 4

-

0/+110

back

 

 

Inclusion in the temperature classes

 

Every adhesive tape, generally every insulating material, is included in the certain temperature class. Temperature classes are referred to uppercase and indicate the highest temperature, which can be adhesive tape permanently stressed.

 

Temperature class

The highest temperature of permanently use

Y

90°C

A

105°C

B

130°C

F

155°C

H

180°C

C

200°C, respectively+ giving temperature

 

Adhesives

Rubber adhesive (130°C)

Rubber adhesives is due the additions of resins and substances for increase resistance to aging, good stickness and is resistant to impregnating varnishes and resins.

Acrylate adhesive (155°C)

The layer of acrylate adhesive, which is made from syntetic polymers,is generally thinner than rubber adhesive. Acrylate adhesive is resistant to light and aging. Resits well to impregnating resins including resins based on unsaturated polyesters. It is resistant to solvents and some oils.

Silicone adhesive (180°C)

Only silicone adhesive based on polysiloxans meets the requirements of insulating class H (permanently temperature 180°C).  In a combination with nonflammable carriers (polyimid, glass fabric) is yielding an adhesive tape for applikations in extremelly conditions.

Thermosetting adhesives

By thermosetting adhesives occurs the elevated temperature to cure the adhesive layer. Thereby increasing its stickiness and especially resistance to impregnating resins .  

 

Heat settings conditions

Rubber and acrylate adhesive:

1 hour by 150°C

2 hour by 130°C

3 hour by 120°C

 

silicone adhesive

2 hours by 260°C

24 hours by 260°C recommended for maximum protection against solvents

 

Vysvětlivky

R                            rubber adhesive

RT                          rubber adhesive, heat settings

RS                          rubber adhesive,resistant to ignition

A                            acrylate adhesive

AT                          acrylate adhesive,heat settings

AT FR                     acrylate adhesive,heat settings,resistant to ignition

Si                           silicone adhesive

SiT                         silicone adhesive ,heat settings

A/Carbon                acrylate adhesive with carbon

A/Silber                  acrylate adhesive with silver

SR/R                      syntetic adhesive/resin

NR/R                      natural adhesive/resin

 

Certificate

Adhesive tapes are certified according to number  UL (file number E20780, E315249) and according to CSA (file number LR96327):

(0) adhesive tape isn't certified according to UL

(1) adhesive tape is resistant to ignition according to UL510

 

Storage conditions

Adhesive tapes should be stored in their original containers, protected from light,by temperature between 15°C and 25°C, by relative humidity 50 ±30%. It is recommended by using of adhesive tape , which is stored by temperature lower than 15°C, to place the tape at 24 hours to room temperature, the tape gets back its characteristic properties.

 

Dimensional tolerances of tape widths

Adhesive tapes with foils:                                      ±0,2 mm (±1/64“)

Adhesive tapes with fabrics:                                  ±0,4 mm (±1/64“)

Adhesive tapes laminated:                                     ±0,2 mm (±1/64“)

                                                                                                                                     back


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