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Eight ways to bag packaging bags, one sentence to tell them apart
Release time:2019-08-23
Three-side sealed bags are designed with only one opening before packaging for filling contents, as the other three sides are already heat-sealed.
Three-side sealed bag
Only one side is left open before packaging, and the other three sides are heat-sealed.
Center sealed bag
Also known as a back-sealed bag. The opening is the same as a three-side sealed bag, but its seal is on the back, and the two sides of the bag are not heat-sealed.
Side-sealed bag
Some milk bags and soy sauce bags are made in this way, with a clear heat-sealed edge on the side.
Tubular bag
Only the top and bottom are sealed, forming a tube shape. Generally, there is no pattern on the back. If there is a pattern on the back, it needs to be made separately in two files.
Clamped bag
Similar to a center-sealed bag, but the two sides of the bag have an M-shaped concave, and there is usually a liner inside the bag.
Side-sealed clamped bag
Similar to a clamped bag, but the seal is not on the back, but on one side of the M-clamp on both sides.
Stand-up pouch
Conical, with a base, the bag can stand upright. Some tea packaging is a stand-up pouch.
Sheet material
Not a bag, such as beverage bottle packaging, it's just a plastic film.
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