|The principle is that the film contains air to form bubbles to
prevent the impact of products, ensure that products are protected
when they are shocked, and also have the function of thermal
insulation. They are suitable for different products packaging or
turnover in all walks of life. Because the air cushion film middle
layer is full of air, so the body is light, elastic, sound
insulation, shockproof, anti wear properties, it is waterproof,
|Poly bubble mailers|
Poly bubble mailers, which is characterized by temporary package to
be transferred in a variety of vehicles, parcel will be stacked
with each other, squeezing. Poly bubble mailers can be divided into
ordinary plastic bags, paper envelopes, bubble envelopes, Poly
bubble mailers, woven bags and so on.
Ordinary plastic bags are made of low-density polyethylene, there
is also a high-density polyethylene, a large amount of Poly bubble
mailers, light weight, small size, attached to the package weight
and small size, ideal for less demanding products to transportation
such as clothing, footwear, jewelry, and other debris.
Courier envelope document mainly paper, divided into white paper,
white card, cardboard and other cattle, paper surface usually
covered with a layer of plastic film, and waterproof for added
Courier bubble mailers, mostly plastic, lined with polyethylene
bubbles, the outside layer of PET composite film or kraft paper,
these bags lined with bubble has its cushioning effect, to better
protect the bag of goods, but also pad It has a certain insulation,
thermal insulation effect.
The mailers packaging mainly including the mailing bags, bubble
mailers and padded envelopes.
The mailing bag is a general designation, which included may kinds
of materials and many kinds of structures, the materials including
the PE, PET, OPP, PVC, Aluminum, stell, paper etc. the structures
including single layer, double layers and multiple layers.
|Polypropylene is a non-toxic, odorless, odorless, milky white
crystalline polymer with a density of only 0. 90--, "0. 91g/cm³",
and is one of the lightest varieties of all plastics. It is
particularly stable in water, the water absorption in water is only
0.01%, molecular weight of about 8, in case of 150 thousand. The
formability is good, but the shrinkage rate is large (1%~2.5%). The
thick wall products are easy to sag, and the parts with high
dimensional precision are difficult to meet the requirements, and
the surface gloss of the products is good.|