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LDPE (Low-Density Polyethylene) has more branching in its molecular structure than HDPE (High-Density Polyethylene), giving it a lower density and flexibility. HDPE is more rigid and has a higher tensile strength compared to LDPE. LDPE is commonly used for packaging and bags, while HDPE is often used for bottles and containers.
LDPE , HDPE, LLDPE
Freezer bags are used for preserving foods that must be frozen by reducing freezer burn and oxidation. You can purchase freezer bags online from stores such as Walmart.
LDPE (low density polyethylene) is used for making plastic bags because it is appropriate and HDPE (High density.....) is not.
Freezer bags are made especially for storing foods in the freezer.
no
trash bags are black and bulky , retail bags are fancy
Grocery bags are very poor freezer bags. They are generally not airtight and contents will be damaged in a short time.
12.75 days
In my opinion, yes, they are. I have stored okra, green tomatoes and zucchini in many bags in the freezer, but ziploc bags always do the job without the freezer burn. If you are making a sandwich for lunch, I really don't think it matters. I have used both and they both work fine. Freezing makes a difference, though.
Usualy, if bought in bulk LDPE can be bought for around $12.45 a pound
well back packs r put on ur back but book bags r to be rolled so book bags have wheels and that is the difference between book bags and back pack