General morphology Description Seals on the brims without any margin. The packet has only 1 portion. 2 seals on the brims and 1 seal on the bottom with 1 margin. The packet has 2 portions. 2 seals on top and bottom with two margins. The packet has three portions. 2 seals on top and bottom with two margins. The packet has five portions.

Table 2: General morphology of plastic wrapping styles defined by seal, margin and portion.