Ziplock Bags: How to Open a Ziplock Bag
The friction force can be used. The two friction forces are parallel to the mouth of the bag and act on both sides of the mouth of the bag in opposite directions. Under the action of friction, there will be an opening at both ends of the bag mouth, and when a hard object is put into the mouth and scraped, the bag will open. Of course you have to be careful not to scratch the contents of the bag. But it seems that there is no such equipment now, you have to make it yourself, will you? I won't anyway.
No matter how smooth it is, doesn't it have the same friction to our hands? Try it by imitating the hand friction mechanism.
Self-sealing bag: Which sealing effect is better, plastic film or self-sealing bag?
The first one is good, the ziplock bag just slows down the speed, it is actually useless.
Self-sealing bags: the difference between self-sealing bags and self-adhesive bags
Self-sealing bag: There is a sealing line at the mouth of the bag. Align the lines on both sides of the mouth of the bag, press it to seal, and pull it open to open the bag. It does not use glue and can be used repeatedly.
Self-adhesive bag: There is a piece of glue at the mouth of the bag. When you buy it, you cover it with a small piece of plastic paper. When you need to seal it, tear off the plastic piece to expose the glue, and then you can seal the bag. It is generally a one-time packaging product. .
Types of self-sealing bags
Self-sealing bags refer to packaging bags that can be automatically sealed by pressing.
