Bag material classification and Explanation
Performance food packaging, composite bag, static bag, vacuum packaging materials, etc., directly affect the change in food shelf life and taste. During vacuum packaging, a good choice of packaging materials is the key to the success of the package. Vacuum bag easy to carry, not afraid to throw touch in daily life and the various sectors of production people, provides greater convenience, but, depending on the material and vacuum functions, the bags are many types.
A, wherein PE for low temperature use, RCPP suitable for high temperature cooking so;
Two, PA is to increase physical strength, puncture resistance;
Three, AL is to increase the barrier properties of aluminum foil, shading;
Four, PET, to increase the mechanical strength, stiffness, excellent.
Then according to the demand, in combination, a variety of properties, but also transparency, in order to increase the barrier properties of barrier coatings using water-PVA.
Several types of vacuum bags
PA / PE or PA / RCPP
PET / PE or PET / RCPP
Wherein PE and PP vacuum bag vacuum bag vacuum bag products are an important part of the difference between the two include the following aspects. First, the different chemical structure of PE and PP vacuum bag vacuum bag. I.e. polyethylene PE, a simple structure polymer consisting of repeating -CH2- units connected together, the polyethylene is polymerized by adding ethylene. PP means polypropylene, is a semi-crystalline thermoplastics. Two, PE and PP vacuum bag vacuum bag different characteristics. Polyethylene odorless, non-toxic, feel like wax, excellent low temperature performance, PE vacuum bag lowest temperature up to -70 ~ -100 ℃. Polyethylene chemical stability, can tolerate most acid-base erosion, at room temperature, not soluble in common solvents, water absorption, excellent electrical insulation properties, but poor thermal aging resistance of polyethylene. Polypropylene has a high impact resistance, mechanical properties of tough, resistant to organic solvents and acid corrosion. Third, different PE vacuum bag vacuum bag in case of PP range of applications. Polyethylene is used to make a large number of vacuum bags, plastic sheeting, buckets and other milk products. In one of the polypropylene polymer materials widely applied in industry, it is very common, often used in the manufacture of various tapes, food and beverage flexible packaging industry can dry clothes or quilts into the vacuum bag after with vane seal bag, then vacuum or suction pump suction, after evacuating only 1/3 of the original volume, expand your storage space, make your home more neat and tidy. Compressed air does not flow, so that the vacuum bag to keep ya, good air tightness. Superior quality, can be used repeatedly, it can be insects, decay, mold, moisture, do not need to use mothballs, moisture and the like, eco-friendly collection of clothing. Currently food bags on the market most of them designed to meet consumer demand. Functionally, the United States was innovation, safety, environmental protection into practical, user-friendly design is to achieve consumer.
In the compound bag, static bag, vacuum bag packaging design to maintain an appropriate degree, get into a certain ethnicity, geography and personal language of symbols. The quality of the product through the packaging medium with a visual aesthetic elements appropriate to show the packaging design with people's material needs and emotional identity combine to form a simple, friendly, modern culture food packaging