Wuhan Handern Dry Food Packaging
DATE：2020/5/14 8:39:43 / READ： / SOURCE：This station
Wuhan Handern Dry Food Packaging
For dry food packaging, there are the following packaging characteristics and requirements: first, these foods are usually packaged in a single layer of plastic film or a carton with plastic as the inner bag. Second, most of them do not require a high degree of oxygen barrier, but All dry foods need good moisture resistance and excellent aroma retention, good resistance to intrusion of external odors; third, simple packaging structure, low cost; fourth, except for soup powder mixture, these foods are sold in big bags For this, a reopening is required, but the cost will be very expensive, and the design should be determined after weighing the two. Dry foods include: dried grains, roasted mixtures, rice, dry soup mixes, noodles, etc. The loss and gain of moisture in dry food packaging should have an appropriate degree, otherwise it will affect the quality of dry foods, and the general humidity is required to be (0.07 × 10 ～ 0.31 × 10-) gcm2 · d, the O2 permeability of the packaging material is (1.5 × 104-1.5 × 1074) mL / (cm2d). www.handern.com Meltblown non-woven equipment
Although the packaging materials are changing from year to year, especially the lining, and the packaging machinery is continuously modernized, the grain packaging has changed little. The carton from 1910 is still in use, and the village bags in the carton have been waxed paper, cellophane and Different changes of NC coated cellophane, automatic packaging molding and filling equipment require that the village has good mechanical suitability, pinhole resistance, sealability without folding, and moisture resistance. Replacing NC-coated cellophane paper with PVA saturated paper or PVDC-coated paper can have lower cost, moisture resistance, O2 resistance, and fragrance retention. Using 50.8um thick HDPE / EVA co-extruded composite film as the material for lower cost, HDPE thickness is 80% of the total thickness, in order to reduce costs and improve heat sealing performance, use EVA / ionic resin mixture to ensure heat sealing reliability. The moisture permeability of this structure is 0.3g / 645cm2 · 24h. When the oxygen barrier is important (for example: oily noodles), EVOH or Ny can be used for co-extrusion. Grain packaging village bags are equipped with easy opening and closing systems for easy use, such as: "zip lock" system on the inner sealing layer. www.handern.com Meltblown non-woven equipment
1. Baking mixture (eg cake) www.handern.com Meltblown non-woven equipment
Baking mixture is a new term that appeared in the middle of the 20th century. Before the 1930s, bakery products were produced at home. Later, it was invented to mix all the ingredients for making bakery products, such as flour, sugar, fatty lung, spices, etc. In a suitable packaging bag, directly for users. Generally, it is packed in LDPE film bag in a carton. It can also be made of EVA extrusion coating with printed paper to make an inner village bag. LDPE bags are packed on a forming-filling and heat-sealing machine, and nylon / ⊥LDPE co-extruded film has good deodorizing properties. www.handern.com Meltblown non-woven equipment
2. Rice
Rice packaging generally uses sack flexible packaging, but because it is easily damaged, it is replaced by plastic bags, which are cheaper than paper packaging. At present, more than half of the rice in the United States has been packaged in plastic bags, and the plastic film used must be sufficient to attach The strength of 9kg, because of the occasional sharp corners of the product, for this reason, the need for needle punching is also important. It is heat-sealed into a bag and sealed, so it must have a high strength. Both LDPE and LLDPE can meet the requirements, and both LDPE is better mandatory. Typical bags are composed of two-layer composites. The outer layer is reverse printed and the inner layer is heat-sealed. For special types of rice with high oil content, such as rice, it is necessary to have Good oxygen barrier to extend its pot life. For foods such as dried soybeans and dried peanuts, packaging materials with high oxygen barrier properties are also required. There are roughly four kinds of structures to choose from: the first structure is PET material compounded with EVA heat seal layer, and the bag mouth is equipped with a reclosable "Zip-Pak" structure; the second structure is aromatic rice: United States Texas uses vacuum brick packaging, like coffee packaging, with 114 = mPET / nylon / LDPE vacuum packaging. Nylon and PET have good aroma retention, gas barrier, and pinhole resistance, while LDPE It is a heat seal layer. There are three specifications of 0.4, 0.8 and 1.2kg. Bundling LLDPE bags with PVC tearing tape is also a commonly used packaging type; the third structure is a blow molded PET barrel, with a size of 250mL ~ 4L is a packaging type of high-priced rice. The fourth structure is that the rice with special flavor is packed in flexible packaging, which can prevent the rice from sticking to the bottom of the dish during cooking. The perforated bag can allow hot steam to enter during cooking, but it can also prevent uncooked cooking from going out at the same time. This kind of packaging bag which can be directly cooked into a rice with a bag can be composed of PE blend, PP or nylon. Multiple perforated bags are packed together and packed in cardboard boxes. www.handern.com Meltblown non-woven equipment
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