Conveyor Belt

tape repair

6, tape repair
(A) Purpose: Tape covers any part of the glue and the core layer is damaged, rather than the timely repair of water and dirt intrusion, will cause a scar to expand, resulting in shortened life expectancy tape, in order to extend the belt life, the timely detection of defects, early treatment, the economic significance will be enormous.
(B) An ordinary polyester tape repair
1. Face covered by plastic damage
1) According to the damaged state of plastic cover can be used for round or diamond-shaped patch along the broken outline of four weeks at least be a 15 ~ 20mm, cut patch to draw lines to 45 º angle oblique, and ripped the cover has been damaged plastic. Be careful not to damage the cutting of the fabric layer below.
2) Prepare patch film, size, and cutting surface fit, the thickness is consistent with the original plastic cover (for example, can be multi-layer laminate thickness is not enough,) 4 peripheral cut Oblique (cold curing adhesive film with the already hot sticky use of non-sulfide film).
3) The Department and the repair patch to play hair, clear plastic dust impurities, wash clean, in the office and back-on-chip repair mortar brushing at least twice, and fully dry. conveyor belts
4) laminating film and fully rolling patch firmly indeed, the existence of excess glue around the edges with a knife gently Katagiri film formation.
5) If the hot-curing adhesive patch device can be used. Reference tape bonding process.
2. Canvas layer damage repair
1) Check the damage size and the fabric layer is damaged floors, the general Break maximum can not exceed 20% of the bandwidth.
2) marker to draw repair parts of sizes. Area is calculated by layer by 30mm. For example, four damaged. Repairing an area of 4 × 30 = 120mm. The patch area of 120mm × 120mm.
3) Cut strip into a hierarchical ladder incision. Hair brush layer by layer and then hit mortar subsidies cover plastic canvas and press firmly.
4) In the tape around the back side surface at least be damaged by 50mm, crossed polishing, brush mortar, adhesive plastic cover make up, rolling firmly indeed.
3. With a longitudinal tear and the tape within 20% of the width of the edge tear repaired  Polyester Conveyor Belt
 1) with a longitudinal tear, generally only need to press half the canvas layer to segment its patch size
Vertical direction: (need to replace the layers +1) × 50mm
Horizontal direction: (need to replace the layers +1) × 30mm
2) the edge of tear tape, we must first check, the damage of the band-edge is a straight-line running, if necessary, should be transferred straight to eliminate tape tension.
3) to draw the edge of patch size line of position, each 30mm layer of fabric as measured across from the tear edge and tear on both sides of the end, start, such as the load is large, the size of the direction of the tape should be doubled.
4) The vertical and the edge of tears with core operating procedures and the repair of damaged fabric layer method is basically the same, but the edge of the patch should be glue on the edge of the vertical strips.
Note: The cutting, with the tape center line into a 45 º angle.
(C) repair of steel cord conveyor belt
1. Plastic cover injury and damage repair glue edges
With ordinary polyester tape.
2. Steel Cord pull off  Nylon Conveyor Belt
A) Repair damaged when removed (or tilt of the) wire rope, use bolt cutters cut, can not use gas cutting, welding, etc..
2) The patch has a rope breaking the tape when the adhesive does not cover damage to the site, will cut the rope and then curing.
3) If two or two or more adjacent broken rope, the ripped plastic cover repair section, from the broken parts of wire rope on both sides of every one to insert a 800mm wire, damaged section of the polished, clear plastic dust, gas cleaning, coating slurry, laying into the new gluing rope, brush a small increase of gasoline and mortar filling the isolation tape, and then glue on the core, cover glue, rolling vulcanization.
3. Longitudinal tear through the patch
1) along the gap of about 60 ~ 100mm for each mark, Alice with a knife cut out the damaged core glue and cover glue and make ramps.
2) polished, and its scope beyond the marked line is about 10-20mm.
3) The first in the gap between the core and upper gum paste, paste plastic cover, cover plastic face thicker than 1 ~ 1.5mm. Than the polished parts of width 10 ~ 20mm.
4) The curing process vulcanization.
(D) Patch Notes
1) repair damage before the conveyor belt around the Department of wiping clean with gasoline.
2) covering a smaller part of gum damage can be repaired directly to fill the cold glue.
3) to fill to fill the surface should be 1.5mm above the belt surface as the amount of shrinkage after curing.
4) Repair parts before curing is best to use wood or iron clamp fixed.
5) The incision direction as far as possible and cover the gel at 45 degrees, to avoid incision and the tape length direction at right angles.