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Introduction and basic test items Tapes

Addtime:2013-9-5 17:39:35  Hits:3656

    1928 St. Paul, Minnesota in the United States , Richard • Drew invented Scotch tape . The effectiveness of the tape as he can be divided into : high-temperature tape, double sided tape, insulation tape , special tape , adhesive tape, cutting tape, different effects for different industry needs.
Principle
    Why can the sticky tape stuff ? Of course, because it is coated with a layer of adhesive between ! The earliest adhesive from animals and plants, in the nineteenth century , rubber adhesive is the main ingredient ; while modern is widely used various polymers . Adhesive can stick things, is because of their desire to connect items molecular and intermolecular bond formation , this molecule can be bonded firmly sticking together . The adhesive composition , according to different brands, different types , a variety of different polymers .
    Tape Introduction : BOPP ( biaxially oriented polypropylene ) tapes for any business , companies, individuals can not live without supplies , the state does not have a perfect tape industry standard , there is only one industry standard "QB / T 2422-1998 sealing BOPP tape with pressure sensitive adhesive . "
BOPP tape is in the original film , based on high-voltage corona through the side of the surface roughness after applying glue elapsed after slitting into small rolls of tape that we use every day . Tape glue is acrylic resin glue, known as PSA , the main ingredient is the tincture fat . Tincture activities substance is a polymer resin , the temperature level of the molecular activity to some extent. Lipid content of the glue directly affect tincture tape usage. Normal sealing tape tack in ≥ 13 number ( Ball number ) between this tape glue thickness is 22 microns. Is standard thickness.
The effectiveness of the tape as he can be divided into : high-temperature tape, double sided tape, insulation tape , special tape - adhesive tape, cutting tape, anti-static tape , anti-static warning tape, different effects for different needs of the industry ;
Tapes basic test items are as follows :
1 Appearance HG / T 2408 - 1992
QB / T 2422 - 1998
2 Size HG / T 2408 - 1992
QB / T 2422 - 1998
3 tack GB / T 4852
4 Support viscous GB / T 4851
5 Tensile strength ( longitudinal direction ) , elongation at break GB / T 7753
6 Tear ( lateral ) GB / T 455.1
7 substrate thickness GB / T 7125
8 paper core diameter QB / T 2422-1998
9 180 ℃ peel strength normal ( heat aging ) GB / T 2792
Use tape
1 Sealing fixed protect various products
(2) the production process to provide protection
3 is widely used in metal , plastic, glass , ceramics and other materials in the structure bonded to the plastic parts such as electronics fixed , laminated glass.
4 anti-static tape is used for electrostatic sensitive products or anti- static region as a warning.
5 ESD warning tape is used for anti-static floor area , containing in English warning signs
Tape storage and use of maintenance
1, the tape should be deposited in the Treasury , to avoid the sun and rain ; prohibit exposure to organic solvents and acid oil , kept clean and dry than 1m away from the discovered devices , at room temperature between -15 ℃ ~ 40 ℃ .
2, the tape should be placed into a roll , do not fold , too long storage time should be turned over once every quarter .
3 , loading and unloading conveyor is best to use cranes and beams with and have a smooth lift rigging to prevent damage to the band edge , never rude loading and unloading , causing the unwinding rejection sets.
4, the tape type, size according to the needs and specific conditions of use , a reasonable selection.
5 , not to make different varieties of different specifications , intensity, number of layers of cloth tape connection ( with the group ) used together .
6 , the best thermal curing conveyor belt joint glued to improve reliability and maintain higher effective strength .
7 , conveyor belt conveyor roller Jane smallest diameter pulley diameter shall meet the relevant requirements.
8 Do not allow tape snake or worm , to keep drag roller , vertical roll flexible tension to moderate.
9 , conveyors fitted with baffles and cleaning device, should avoid tape wear.
10 , cleanliness is the basic condition for the tape running well , foreign substances will affect the eccentric strap tension difference , or even rupture.
11 , the use of tape have found the phenomenon of early damage , it should promptly find out the reasons , repairs, to avoid adverse effects to appear.

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