TELE®TUBE
１．Features of TERE®TUBE
TERE®TUBE is the tube manufactured by the extrusion molding of saturated polyester resin based mainly on polyethylene terephthalate (PET), followed by special processing. It has a feature to shrink through heating.
Excellent insulation properties

This tube has high dielectric strength, which makes this tube an ideal insulation material. “TERE®TUBE” has established the status as the leading product as covering material for electrical components in the polyester shrinkable tube market.

Excellent heat resistance
Operating temperature limit is very wide such as 70-150°C, and continuous service temperature is possible up to 120°C (Electric Appliances and Material Control Act: unconditionally approvable range in technical standards).
Excellent mechanical strength
Compared with tubes made of polyvinyl chloride (PVC), etc., this tube has excellent mechanical properties such as impact strength, tensile strength, etc.
Excellent weatherability
Since plasticizer, etc. are not contained, this tube is resistant to deterioration and excellent weatherability.
Excellent chemical resistance
This tube is not affected by most of organic chemicals and oils.
(It is resistant to acids in general, but slightly weak to alkalis with minor deterioration.)
TELE®TUBE
２．Application Cases of TERE®TUBE
TERE®TUBE takes advantage of its features, and flourishes in various fields.
Shatterproof fluorescent lamp
Broken pieces are resistant to scattering, which keeps damage at a minimum when a disaster strikes
Steel pipe
This tube protects the surface of metals from corrosion like rusting, and in addition, provides design capability.
Coil
This tube protects the winding part, and makes discrimination easy through display.
UV cut fluorescent lamp
The fluorescent lamp covered with UV cut tube is effective for semiconductor plant, museum, etc., which are weak to UV rays, and it also has effects on bug prevention.
Motor
This tube provides insulation and prevents fracture.
Capacitor
This tube provides insulation.
Colored fluorescent lamp
Through covering fluorescent lamps with various colored tube, this lamp stages illumination effects.

Besides the above applications, TERE®TUBE is frequently used for various usages such as insulation cover of electric components, cover of illumination equipment, metal protection cover, cap seal of containers, and packaging of foods and pharmaceuticals.

TELE®TUBE
３．Specification List of TERE®TUBE
TERE®TUBE takes advantage of its features, and flourishes in various fields.
U Type
Nominal
Thickness
(µ)		 Nominal
Folding Width
（mm）		 Shrinkage Percentage
（％）
Radial Longitudinal
50 2.7～5.9 16±8 25±8
6.0～8.6 23±8 28±8
8.7～9.1 33±8 33±8
10.5～49.0 40±8 37±8
50.0～94.0 36±8 33±8
75 8.7～10.0 36±8 36±8
10.5～49.0 40±8 37±8
50.0～106.0 36±8 33±8
100 30.0～37.0 35±7 35±7
38.0～50.0 35±7 30±7
51.0～85.0 35±7 25±7
150 42.0～50.0 35±7 30±7
51.0～65.0 35±7 25±7
L Type
Nominal
Thickness
(µ)		 Inner
Diameter
（mm）		 Shrinkage Percentage
（％）
Radial Longitudinal
50 1.6～3.0 3±3 3±3
75 3.0～12.0 3±3 3±3
100 4.0～14.0 3±3 3±3
U Type（Thermal fusion type）
Nominal
Thickness
(µ)		 Nominal
Folding Width
（mm）		 Shrinkage Percentage
（％）
Radial Longitudinal
50 10.0～100.0 43±8 38±8
75 10.0～100.0 43±8 38±8

H type and L type are indicated by inner diameter, and U type and T type are indicated by folding width.
Shrinkage is the value obtained by immersing a specimen in boiling water (98±2°C) for 10 sec.

H Type
Nominal
Thickness
(µ)		 Inner
Diameter
（mm）		 Shrinkage Percentage
（％）
Radial Longitudinal
50 1.2～3.0 16±8 16±8
3.5～6.5 21±8 21±8
7.0～44.0 25±8 23±8
75 3.0～4.0 16±8 16±8
4.1～7.5 18±8 18±8
8.0～10.0 23±8 21±8
10.5～37.0 25±8 23±8
100 4.0～5.5 16±8 16±8
6.0～15.0 18±8 18±8
125 5.0～5.5 16±8 16±8
6.0～10.0 18±8 16±8
11.0～15.0 18±8 18±8
T Type
Nominal
Thickness
(µ)		 Nominal
Folding Width
（mm）		 Shrinkage Percentage
（％）
Radial Longitudinal
25 20.0～25.0 16±10 30±10
35 32.0～48.0 18±10 35±8
50 20.0～35.0 20±10 31±8
50.0 20±10 35±8
Features and usage of each type
Type Features Application Case
U High shrinkage Shatterproof and UV cut; Cover of colored fluorescent lamp; Insulating cover of capacitor, coil, and motor; Cover of steel pipe
H Radial shrinkage > Longitudinal shrinkage Insulating sheath of various conductors such as motor, transformer, harness, and switch board; Cover of antivibration / insulation bolt; Antirusting cover of copper pipe, etc.; Cover of lamp for image scanner; Cover of lead wire
L Shrinkage is small at 120°C or below. Insulating cover of various conductors such as motor, transformer, harness, and switchboard
T Longitudinal shrinkage > Radial shrinkage
Usable in the shape of tape.		 Binding tape for various materials
TELE®TUBE
４．Product Shape of TERE®TUBE
TERE®TUBE takes advantage of its features, and flourishes in various fields.
Reel winding (200 m)
1 m Cut
Cassette winding
Roll winding (50 m, 100 m)
Fixed size cut

Some types of TERE®TUBE have only definite shape depending on the size.
Please contact us for the shape.

 

Contact us for inquiry on color.
(Beside transparent, there are green, blue, red, orange, yellow, white, and black.)

 

The minimum order lot for TERE®TUBE is 3,000 m.

TELE®TUBE
５．Physical Properties of TERE®TUBE

*Each value of physical property is the measurement value under non-shrinking condition.

* Physical properties are measured in longitudinal direction.

U Type
Classification Item Test
Method		 Unit Measured
Value
Physical
properties		 Specific gravity ASTM D792 - 1.4
Tensile strength at break ASTM D638 MPa(kgf/cm2) 216(2,200)
Tensile elongation at break % 63
Young’s modulus MPa(kgf/cm2) 5.94×104（605,800）
Tear resistance JIS K7128 MPa(kgf/mm2) 1.3×10-3（1.3）
Tensile impact strength ASTM D1822 J/cm2(kgf･cm/cm2) 0.64（630）
Thermal
properties		 Melting point JIS K7121 ℃ 244
Operating temperature limit ASTM D759 ℃ -70～150
Electrical
properties		 Dielectric breakdown voltage ASTM D149 KV/mm 140～160
Surface resistivity ASTM D257 Ω 2×1017
Volume resistivity Ω･cm 6×1016
Dielectric constant ASTM D150 60Hz 3.71～3.78
103Hz 3.53～3.61
106Hz 3.25～3.33
Dielectric loss
（×10-3）		 60Hz 2.0～3.0
106Hz 1.5～3.0
Dielectric loss tangent
（×10-3）		 60Hz 1.4～2.0
103Hz 6.4～7.0
106Hz 2.5～2.6
L Type
Classification Item Test
Method		 Unit Measured
Value
Physical
properties		 Specific gravity ASTM D792 - 1.4
Tensile strength at break ASTM D638 MPa(kgf/cm2) 275(2,800)
Tensile elongation at break % 56
Young’s modulus MPa(kgf/cm2) 8.23×104（839,400）
Tear resistance JIS K7128 MPa(kgf/mm2) -
Tensile impact strength ASTM D1822 J/cm2(kgf･cm/cm2) 0.57（560）
Thermal
properties		 Melting point JIS K7121 ℃ 255
Operating temperature limit ASTM D759 ℃ -70～150
Electrical
properties		 Dielectric breakdown voltage ASTM D149 KV/mm 100～130
Surface resistivity ASTM D257 Ω 3×1016
Volume resistivity Ω･cm 5×1016
Dielectric constant ASTM D150 60Hz 3.71～3.78
103Hz 3.53～3.61
106Hz 3.25～3.33
Dielectric loss
（×10-3）		 60Hz 2.0～3.0
106Hz 1.5～3.0
Dielectric loss tangent
（×10-3）		 60Hz 1.4～2.0
103Hz 6.4～7.0
106Hz 2.5～2.6
H Type
Classification Item Test
Method		 Unit Measured
Value
Physical
properties		 Specific gravity ASTM D792 - 1.4
Tensile strength at break ASTM D638 MPa(kgf/cm2) 264(2,700)
Tensile elongation at break % 45
Young’s modulus MPa(kgf/cm2) 9.28×104（946,600）
Tear resistance JIS K7128 MPa(kgf/mm2) -
Tensile impact strength ASTM D1822 J/cm2(kgf･cm/cm2) 0.50（490）
Thermal
properties		 Melting point JIS K7121 ℃ 255
Operating temperature limit ASTM D759 ℃ -70～150
Electrical
properties		 Dielectric breakdown voltage ASTM D149 KV/mm 100～160
Surface resistivity ASTM D257 Ω 5×1016
Volume resistivity Ω･cm 5×1016
Dielectric constant ASTM D150 60Hz 3.71～3.78
103Hz 3.53～3.61
106Hz 3.25～3.33
Dielectric loss
（×10-3）		 60Hz 2.0～3.0
106Hz 1.5～3.0
Dielectric loss tangent
（×10-3）		 60Hz 1.4～2.0
103Hz 6.4～7.0
106Hz 2.5～2.6
T Type
Classification Item Test
Method		 Unit Measured
Value
Physical
properties		 Specific gravity ASTM D792 - 1.4
Tensile strength at break ASTM D638 MPa(kgf/cm2) 264(2,700)
Tensile elongation at break % 79
Young’s modulus MPa(kgf/cm2) 7.20×103（73,400）
Tear resistance JIS K7128 MPa(kgf/mm2) 8.8×10-4（0.9）
Tensile impact strength ASTM D1822 J/cm2(kgf･cm/cm2) 0.62（610）
Thermal
properties		 Melting point JIS K7121 ℃ 255
Operating temperature limit ASTM D759 ℃ -70～150
Electrical
properties		 Dielectric breakdown voltage ASTM D149 KV/mm 200～220
Surface resistivity ASTM D257 Ω 2×1017
Volume resistivity Ω･cm 2×1016
Dielectric constant ASTM D150 60Hz 3.71～3.78
103Hz 3.53～3.61
106Hz 3.25～3.33
Dielectric loss
（×10-3）		 60Hz 2.0～3.0
106Hz 1.5～3.0
Dielectric loss tangent
（×10-3）		 60Hz 1.4～2.0
103Hz 6.4～7.0
106Hz 2.5～2.6
Continuous service temperature
As for TERE®TUBE, the upper limit of operating temperature for the insulation materials of electrical appliances is stipulated based on the technical standards of the Electrical Appliances and Material Control Act.
Polyethylene terephthalate tube: Continuous service temperature = 120°C
TELE®TUBE
６．Thermal Shrinkage Properties of TERE®TUBE

TERE®TUBE shrinks by heating.

The correlation between heating temperature and shrinkage is shown on the major brands of TERE®TUBE.

( Shrinkage is the value after heating in an oil bath of each temperature for 10 sec.)

TELE®TUBE
７．Chemical Resistance of TERE®TUBE

This tube is not affected by most of organic chemicals and oils.

It is resistant to acids in general, but slightly weak to alkalis with minor deterioration.

TELE®TUBE
８．Electrical Properties of TERE®TUBE
TELE®TUBE
９．Weatherability of TERE®TUBE
Deterioration test using a sunshine weather-o-meter (test condition: black panel temperature of 83°C, without water spray)
Weatherproof brand with the addition of UV ray cut performance shows excellent weatherability property compared with standard brand
TELE®TUBE
１０．Durability of TERE®TUBE
Accelerated deterioration test using a super-energy test machine
Rough guide for deterioration when it is used as the cover of a fluorescent tube is as follows.

* The specimen was irradiated with UV rays (wavelength = 300-400 nm) for 40 hr, which is equivalent to the lighting of a fluorescent lamp for about 10,000 hr.

 

Amount of UV light 0.3W／tube
Surface area of a fluorescent lamp 1,222.5cm2 (diameter: 32.5 mm, length: 1,198 mm)
Amount of UV light from the surface of a fluorescent lamp 0.25mW／cm2＝0.009MJ／m2／Hr
UV ray energy equivalent to 10,000 hr of lighting of a fluorescent lamp 0.009MJ／m2／Hr×10,000Hr＝90MJ／m2
Energy of irradiated UV rays (wavelength = 300-400 nm) in super-energy test 65mW／cm2＝2.34MJ／m2
From the above data, treatment time with UV light equivalent to 10,000 hr of lighting with a fluorescent lamp is as follows: 90MJ／m2÷2.34MJ／m2＝38.5Hr