Element 1:: Body fabric: The body of this bag is in a popular shape, mainly in a structure of a quadrate like squared or oblong. Customers may choose colors specifically to their liking. The fabric of the body is weaved using polypropylene or polyethylene, so it is strong and can last longer.
Element 2:: Frame sticks: The frame sticks are made out of steel or highly strong nylon, which the measurement of the diameter is calculated based on the capacity of weight, for example: a packaging bag that contains frame sticks which are all 3mm in diameter can hold half on ton of cargo with keeping the top in a freestanding shape. The capacity of weight of a packaging bag is normally less than one ton.
Element 3:: Loops: The loops are U-shaped and are sewn on the outside of the body, ending in the bottom portion of the bag, this enhances the capability of transporting cargo and having a larger capacity of weight.
Element 4:: Grommets: The grommets are placed in the body that is near the top. There are four grommets on each bag and one on each side of the body. They are used to string thread and seal the mouth of the bag. A packaging bag with grommets are mainly used to package the cargo in bulk.
The working theory of the new bag is listed as follows:
Being that new free standing bag has several separated but flexible frame sticks inside its body, it can free stand and fold for easy storage purposes. It may also keep its mouth open without manpower or mechanical help. Meanwhile, it protects the cargo inside the bag like flowers and plants from being squeezed and damaged in the procession of holding, transporting and transferring. Comparing with the current packaging bag, it saves the manpower and is easier to take and use than before. At the same time it can be used for holding waste and flowing materials, so it can be a replacement of buckets and baskets etc.