Why Compostable Bag Leak?

Compostable material is a lipid. The characteristic of lipids.

The main components of compostable bags are PLA and PBAT, and starch. PLA, PBAT is biodegradable polyester.

Lipids tend to break down into their corresponding acids and alcohols under acidic or alkaline conditions. Common life-related products are fats, waxes, and soaps.

Their microscopic structure is a dense honeycomb, so there are clear gaps between the molecules. The molecular structure of starch degradation material is better than that of common lipids

The structure is looser. Because they also incorporate starch into their molecules. The intermolecular structure is more unstable.

In contrast, the molecular structure of polyethylene or polypropylene, which are plastics, is much more stable.

Barrier properties, water vapor and oxygen permeability.

The barrier property of the starch degradation bag and the permeability of water vapor and oxygen are all bigger than that of plastic material, which is more than 10 times of plastic material.

Does PLA and Kraft Paper laminated bags Better than single material?

No, there is no increase in the airtightness of laminated kraft paper, the increase is only a thin layer of glue, can not change the original situation.

Do individual bags leak?

A separate bag containing water will not leak, but if it has a zipper, the two ends of the zipper may leak water. But the bag does not effectively insulate the liquid

And the outside air exchange and interaction. So do not pack long-term storage of liquid. There’s no harm in using it temporarily.

What products are suitable for this material?

Short-term use is not affected, for example, if only short-term storage 10-15 days, and there is a sealed treatment, starch degradation bags can also be filled with liquid,

for short-term storage or relocation.

Those dry and absorbent products should not be used for long-term packaging,

those foods which are easy to go bad should not be packed for a long time.