What are the precautions for butter double-sided tape?

Be careful with butter double-sided tape, peel off lightweight tissues (such as 60 g / m 2 and {{2}} g / m 2) The force used to peel off the heavy paper is greater. The lighter the paper, the tighter the feel when peeling. Because of this, sometimes the die-cut double-sided adhesive tape selected by the customer in the shape required by the customer cannot be completed at the conventional processing speed. Butter double-sided tape is a roll-shaped adhesive tape made of paper, cloth, and plastic film as the substrate, and then uniformly coating the elastomer-type pressure-sensitive adhesive or the resin-type pressure-sensitive adhesive on the above substrate. It consists of three parts: adhesive, release paper (film) or silicone oil paper.

1. Check for cracks on the double-sided butter tape. When the double-sided butter tape is slit, if the slitting cutter is not adjusted properly or the blade is not sharp enough, cracks will appear on the top or bottom paper of the double-sided tape, and the fibers pulled out of the crack will be stuck by the adhesive. . The occurrence of cracks may be continuous or random, and may appear on one side of the double-sided tape of the reel, or may be on both sides. Therefore, before double-sided tape is machined, be sure to carefully check the backing paper and surface Are there any small cracks on the paper? Then, take a piece of sample paper that has passed the above inspection, peel it to the backing paper and check again whether there is a crack on the bottom paper and the backing paper. Because the cracks are sometimes very small, they can only be found after separating the bottom and top papers.

2. Check if there are burrs on the double-sided adhesive tape? The edge of the reel double-sided tape is smooth and undamaged, which is the basis for ensuring the quality of the double-sided tape. It is damaged, and the double-sided tape of the reel should be rolled down 4-5 circles, and the slitting edge should be carefully checked. Immediately following the inspection method of the appearance of the double-sided tape we mentioned above, today we will add some knowledge about this aspect.

3. Check whether the edges of the double-sided butter tape are sticky, and whether the bottom paper is coated with silicon? Buttery double-sided adhesive tapes are stuck on the edge or there are some areas on the bottom paper that are missing silicone oil. During the processing process, the facial paper will be broken during waste disposal, and it will not be able to produce normally. Therefore, before processing, take a piece of self-adhesive material with a length of 1 meters and peel it off by hand to see if there are any parts that cannot be peeled off smoothly at the edges or other parts. Usually, the edge adhesion of the top and bottom papers occurs on a slit roll of the coated roll of self-adhesive material, and generally only occurs at the outer layer 7 m ~ 1 0m. Therefore, if the double-sided tape of the slit roll is stuck at the edge, do not immediately assert that the entire roll of paper has this problem.