Extension method and device for polythene radiation-crosslinking thermal-contraction belt
A radiation cross-linking and heat-shrinkable tape technology, applied in belts, applications, household appliances, etc., can solve the problems of polyethylene radiation cross-linking heat-shrinkable tapes, such as uniform heating, unstable temperature, too large extension ratio, and uneven extension. , to achieve the effect of low elongation ratio, uniform elongation and reduction of transverse shrinkage
Active Publication Date: 2009-03-25
CGN DASHENG ELECTRON ACCELERATOR TECH
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Problems solved by technology
[0002] In the prior art, oven heating is usually used, and the speed difference between two rollers or three rollers is used to achieve stretching. Due to oven heating, it is difficult to ensure that the polyethylene radiation cross-linking heat shrinkable tape is heated evenly and the temperature is unstable, so that the product is in the Uneven stretching occurs during the stretching process, and when the speed difference between two rollers or three rollers is used for stretching, the stretching ratio cannot be too large, so the product with a large stretching ratio needs to be stretched multiple times, and the stretching efficiency is low , and the lateral shrinkage is serious
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[0029] Referring to Fig. 1 , a stretching device for polyethylene radiation crosslinking heat shrinkable tape includes three preheating rollers 2, six stretching rollers 1, One extension transition roll 8 and three cooling rolls 3, the rear side here is the left side in the drawings, the front side is the right side in the drawings, three preheating rolls 2, six extension rolls 1, one extension transition The axis lines of the roller 8 and the three cooling rollers 3 are parallel to each other and can rotate around their own axis lines respectively, and the parts of the outer circumferential surfaces of each adjacent two stretching rollers 1 are close to each other, and each adjacent two preheating rollers Part of the outer peripheral surface of 2 is close to each other, and part of the outer peripheral surface of every two adjacent cooling rolls 3 is close to each other; the extension transition roller 8 is in close contact with the part of the outer peripheral surface of the ...
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Abstract
The invention relates to an extending device of polyethylene radiation crosslink thermal contract band, and relative extending method. The invention comprises several rotary preheating rollers, extending rollers, and cooling rollers, while each extending roller has a chamber filled with thermal conductive liquid. And the extending method comprises that a, passing the band via several preheating rollers to be preheated, b, passing band via several extending rollers to be extended, and adjusting the rotation speed and surface temperature of the extending rollers, c, passing band via several cooling rollers to be cooled, at last taking off the band. The invention can accurately heat and extend band uniformly and accurately, while the transverse contract rate is less than 3%.
Description
technical field [0001] The invention relates to a method for extending a polyethylene radiation crosslinking heat shrinkable tape. Background technique [0002] In the prior art, oven heating is usually used, and the speed difference between two rollers or three rollers is used to achieve stretching. Due to oven heating, it is difficult to ensure that the polyethylene radiation cross-linking heat shrinkable tape is heated evenly and the temperature is unstable, so that the product is in the Uneven stretching occurs during the stretching process, and when the speed difference between two rollers or three rollers is used for stretching, the stretching ratio cannot be too large, so the product with a large stretching ratio needs to be stretched multiple times, and the stretching efficiency is low , and the lateral shrinkage is severe. Contents of the invention [0003] The object of the present invention is to provide a stretching device and stretching method for a polyethyl...
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IPC IPC(8): B29C43/24B29C43/46B29C43/52B29C43/58B29K23/00B29L29/00
Inventor 马小丽
Owner CGN DASHENG ELECTRON ACCELERATOR TECH