The Recognition Methods of Qualified Laminated Food Packaging Bags

Laminated food packing bags are often used in people's life. But we also have to use carefully, because some laminate food packaging bags are toxic. They can’t be used to packing food directly. So how can we distinguish them from bad laminate food packaging bags?

1. Observe by eyes Non-toxic laminate food packaging bags show a white color. It is transparent or slightly transparent with uniform texture. While toxic laminate food packaging bags is colored. Or although it is white but is in poor transparency. The surface of laminate food packaging bags is uneven, with small particles.

 2. Listen with ears It would make a clear sound if you shake the non-laminatetoxic food packaging bagswith hand. While small and stuffy sound is usually produced by toxic laminate food packaging bags.

3.Touch with hands Have a touch at the surface of the laminate food packaging bags. Non-toxic laminate food packaging bagsare very smooth, while toxic laminate food packaging bags are sticky and have a sense of wax feeling.

4.Smell with nose Non-toxic laminate food packaging bags are tasteless. If laminate food packaging bags have an abnormal smell or taste, then it is toxic.

5.The submerged test method Put laminate food packaging bags into the water, and press them to the bottom with hand. They are non-toxic laminate food packaging bags if they can emerge from the water in a moment. The sunk are toxic laminate food packaging bags.

6.combustion method Non-toxic laminate food packaging bags have yellow flame in the top and local in cyan if burned. It burns like candle tears dripping with a smell of paraffin; Toxic laminate food packaging bags are not easy burnt. It will extinguish once away from the fire. The flame of the laminate food packaging bags is green in some parts.

How to Prolong the Service Life of Laminated BOPP Bags

The increased service life of laminated bopp bags can save our cost of production. There are many ways to extend the service life. In addition to the quality of the laminated bopp bags themselves, our usual usage of the laminated bopp bags would also have influence. So here are some methods for your laminated bopp bags maintenance.

First of all you need to be aware of the raw material. If you add too much back material, don't add change agents for it can reduce the aging-resistance property of laminated bopp bags. The dyestuff will have a great influence on laminated bopp bags. if you want the laminated bopp bags have more resistance to ageing, you should adopt coated rutile titanium. The yellow dyestuff can increase the lifetime of laminated bopp bags.

We also should pay great attention when using laminated bopp bags. For example, it can not be cut. And you should keep the laminated bopp bags a regular cleaning and maintenance. If there is a problem, repair immediately.

If the laminated bopp bags are not used, you have better have them folded away from heavy things. It would be good if you put up the laminated bopp bags separately. While using laminated bopp bags, prevent then from contacting with acid, alcohol, petrol chemical. In that we can long-term maintain its pliable texture and the original color. If there is dirt in laminated bopp bags, use cold water or no more than 35 degrees of warm water to wash. The best washing method is to put laminated bopp bags in the board or the table, wipe them with a cloth dipped in water gently. And then rinse in clean water. Do not forcibly knead in the basin; Once washed, laminated bopp bags should be hung in a cool and ventilated place rather under the sunlight.

Differences between Polypropylene Woven Bags Printing and Paper Printing

What are the differences between polypropylene woven bags printing and paper printing? The specific differences are as follows: 

1.The printing ink is different. Shenghua polypropylene woven bags printing are using a special plastic ink. Polypropylene woven bags printing has strong adhesion on the polypropylene woven bags. The print is not easy to fall off. Plain paper printing ink printed on the polypropylene woven bags would fall off easily if rubbed. The printing ink in the polypropylene woven bags dries fast and is not easy to fall off.

2.Different methods of printing. PP woven bags printing in small quantity generally print with flat screen printing. It has the advantage of being plate making convenient, flexible and can be printed by machine or by hand. Silk screen printing has a short service life, generally there is leakage every 1 ~ 20000 times print. The highest limit printing time may not more than 30000 if serves for polypropylene woven bags printing. If the quantity is large, drum metal mesh printing or offset printing rollers is available. They belong to heavy machinery with a fast speed of printing. The service life of the version is relatively longer, but the printing process of the polypropylene woven bags is relatively complicated too. Every version can be printed more than 100000 times on the polypropylene woven bags. Flat screen and metal screen printing are not suitable for color printing, generally only one or two color print, otherwise the complex registering process would have a low efficiency. Offset printing can do color printing.

3.Because of the flexible packaging printing ink, polypropylene woven bags need to be dried or have a drying process after finished. Otherwise the polypropylene woven bags would easy to adhere. Polypropylene woven bags printing technology is developing very fast. High speed printing, color printing have reached very high level.

Methods for the Promotion of Recycled Shopping Bags

Cost reduction will help the implement of recycled shopping bags.

If we want to make the implement of recycled shopping bags no longer difficult, firstly we should take actions in many forms and ways to intensify propaganda. Not all the citizens are specially focus on media, like the 73 - year - old grandma who was surprise to say that I have no idea that the plastic bags were so poisonous after listening the introduction from the staff promoting recycled shopping bags. It is clear that the usual publicity has left corners.

Second, we should reduce the cost of using recycled shopping bags. For customers to use recycled shopping bags is free. But for the owners, it increases operating costs. Business households sell a kilo of green vegetables, for example, profits could only 1 cent. Using ordinary plastic bags almost don't have to calculate the cost, but if they use recycled shopping bags, there almost has no profits. Therefore, the reduction of using cost of the recycled shopping bags is the key. I think, we can print advertising on the recycled shopping bags to offset the cost. At the same time, we can adapt to the method of reward consumption to encourage citizens to use recycled shopping bags. Shop again with recycled shopping bags can obtain many benefits.

Finally, when necessary, we should put forward compulsory laws to restrict the use of plastic bags to cultivate citizen's environmental protection consciousness by using recycled shopping bags. It is a good way to eliminate white pollution as soon as possible.

Look for the best alternatives of plastic bags. Now the best substitutes are recycled shopping bags because they take in nature without any pollution to the environment. Recycled shopping bags are helpful for repeated use. So choose to use recycled shopping bags next time when you are shopping.

The Application of PP Bags

There is a wide-range use of pp bags in daily life. PP bags are mainly used for all kinds of pack and packaging. It is also well adapted in industry area. Here is a professional summary about the pp bags production knowledge for everyone.

As some people know, pp bags take polypropylene as the main raw material. The pp bags are made through many processes like extrusion, stretching into flat wire, then weaving and molding. Composite plastic pp woven bags take plastic woven cloth as the backing material, composited through tape casting. Woven bags can be divided into pp bags, bopp and pe bags bags according to the main material. According to the seam sewing method, it can be divided into bottom bag and hemming bottom bag. PP bags are currently widely used in fertilizer, chemical products and other items of packaging. The main production process is the use of plastic raw material by extrusion film, cutting, uniaxial tensile as flat wire. The products after warp knitting are commonly known as pp bags.

It is true that pp bags are widely used in sea transportation packaging of industrial and agricultural products. In agricultural products packaging, pp bags packaging has been widely used in aquatic product packaging, poultry feed packing as well as farms cover material. Sheds for sun, wind and hail protection in the agriculture field are also made from pp bags. Some common applications of pp bags are feed bags, chemical bags, woven bags, vegetable mesh bag, fruit mesh bag, etc.

Our company is a professional manufacturer of pp bags. You can find many kind of pp bags wholesale in our official website. We provide you with pp bags in high quality. All our products are made from good materials. We sincerely welcome the masses of users take a look at our high quality pp bags.

How to Pay the Deposit of PP Woven Sacks Wholesale

Usually when customers want to buy a large amount of pp woven sacks wholesale, they have to make an order first. So the business can have enough time to produce pp woven sacks. But people always find that before the pp woven sacks wholesale, buyers have to pay a deposit for this regulation in advance which is difficult for some people to accept. Maybe it is because most of these customers are the first-time cooperators. They lack mutual trust. Manufacturers of pp woven sacks wholesale also have no options but adapt to this rule. Because in the absence of this provision order, things like refusing to accept the delivery of pp woven sacks wholesale, cancelling the orders always happen. And it leaves the pp woven sacks wholesale manufacturers no option.

Seeing this, perhaps some pp woven sacks wholesale merchants will say, you have your difficulty, and we also have our difficulty. What if I give you the deposit without getting pp woven sacks? To have such doubts is a normal phenomenon for first cooperation. Roylakos for pp woven sacks wholesale has come up with a win-win trading method that is online transactions.

Merchants can through the pay treasure to guarantee deal, so you don't have to worry about payment without getting your pp woven sacks wholesale. And manufacturers of pp woven sacks wholesale don’t have to worry about the businessman’s temporary change of her mind.

We all know that pp woven sacks wholesale is a large industry, and it needs to be guaranteed with reputation. If you want to have pp woven sacks wholesale have a bright prospect you should make sure that you can provide pp woven bags wholesale in a large quantity once you accept the order. It is required to provide many ways of payment to make convenience for the customers.

Brief Introduction of Recycled Shopping Bags

The so-called recycled shopping bags generally refer to the kind of shopping bags that can be used repeatedly, and the materials can be natural degradation. Recycled shopping bags are safe and environmental protection. For building a resource-conserving and environment-friendly society, we should take forceful measures from the source to urge the enterprise to produce durable recycled shopping bags. The government should guide and encourage masses to use recycled shopping bags rationally. It is beneficial to the comprehensive utilization of resources, protection of the ecological environment. The use of recycled shopping bags is one step in the further promotion of energy conservation and emissions reduction work.


Vulgarly speaking, recycled shopping bags are recycled. After finally discarded, it is easily to degrade under the natural condition, and will not cause environmental pollution. Compared with ordinary plastic bags,laminated non vowen shopping bags are stronger with less problems of break or leakage. And you can choose the recycled shopping bags in your favorite style.


Now through the national publicity, and the implementation of all provinces and cities recycled shopping bags also gradually come into the public's vision. From materials to the design, all sorts of beautiful design of recycled shopping bags become popular. Institutions, website, newspaper and so on have also held environmental protection recycled shopping bags design contest to provide a stage for designers to fully show their talent. Even some units also began handing out recycled shopping bags. Some big supermarket, bookstores provide recycled shopping bags too. All signs show that the recycled shopping bags are gradually come into people's lives.
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Functions of Food Packaging Bags

Food packaging bags is a kind of packaging design. In real life, in order to facilitate preservation and storage, we created product packaging. 

Food packaging bags can be divided into many groups by the scope of its application: ordinary food packaging bags, plastic food packaging bags, vacuum boiled food packaging bags, and functional food packaging bags.

1.Physical Protection
Food stored in the food packaging bags need to avoid extrusion, collision, vibration, temperature difference and so on.

2. Enclosure Protection
Enclosure is able to isolate food from oxygen, water vapor, stains. Seepage prevention is also the necessary factor in food packaging bags packaging design. Some packaging includes the desiccant or deoxidizer to prolong shelf life. Vacuum packaging or evacuation of the inner air of the food packaging bags is the main method of food packaging. Guaranteeing the freshness, safety and cleanness of the food within its shelf life is the primary function of food packaging bags.

3. The Same Packaging
It is a good way to save volume by putting the same kinds of small objects into a package. Powder and granular objects need to encapsulate individually in the food packaging bags.

4. Convey Information
Packaging and labeling tell people how to use the packaging or food, transport, recycling or processing.

5. Marketing
Merchants often use beautiful food packaging bags to encourage potential buyers to purchase goods. Packaging design for decades has become an important and constantly changing phenomenon. Marketing communications and graphic design are applied to the bottle and (for some reason) become a hotspot in sales display window.

6. Security
Package places an important role in reducing safety risk while transport. Food packaging bags can also avoid food being categorized into other kind of goods. Food packaging bags can reduce the possibility of being stolen. Some food packaging bags are very strong and have anti-counterfeiting marks to prevent the interests of businesses from losses. There are labels as laser logo, special color, SMS certification etc. in the food packaging bags. In addition, to avoid theft, some retailers put electronic monitoring label on food packaging bags. And customers have to get goods demagnetized at the check-out desk.

7. Convenience
Frozen Food packaging bags have the properties of easy to acquire, load and unload, stack, display, sales, open, reshipment. And some food packaging bags can be reused.

8. Part of the control
Single food packaging bags are helpful to accurate control of the overall situation. For example, salt in food packaging bags is easy to know the inventory. The use of food packaging bags is beneficial to calculating the sales, such as dairy company delivery and recovery of milk bottles. Consumers don’t fill the bottle themselves. 

Wide Range of PP Woven Bags Applications

1. industrial and agricultural product packaging
At present, due to the products and price, each year, 6 billion PP woven bags are used for cement packaging in our country, accounting for more than 85% of the bulk cement packaging. With the development and application of flexible container bags, PP woven bags are widely used in sea transportation packaging of industrial and agricultural products. As for agricultural product packaging, PP woven bags have been widely used in aquatic product, poultry feed packing, cover material in farms. It can also be seen in sun, wind, hailstone proof tents in the farm. Common products are: feed bag, chemical bag, woven bags, woven bags urea putty powder, vegetable mesh bag, fruits mesh bag.

2. food packaging
In recent years, food like rice, flour, gradually are packed with PP woven bags. Common PP woven bags are: rice PP woven bag, flour PP woven bag and corn PP woven bags.

3. geotechnical engineering
Since the development of geotechnical cloth in the 80’s ,the application field of PP woven bags has been widely broadened. It is widely used in small water conservancy, electricity, roads, railways, ports, mining construction, military engineering construction. In these projects, geosynthetic materials have the filter, isolation, seepage control functions. Plastic geotextile is a kind of synthetic geotechnical materials.

4. tourism transport
the temporary tent, umbrella, all kinds of bags, travel bags in tourism have the application of plastic woven fabrics, much of them are PP woven bags. All kinds of tarpaulin cover material widely used in transportation and storage are taking place of cotton tarpaulin which is heavy and easy to rot. The construction of the fence, net is also widely used in plastic knitting. Commons are: freight logistics, packaging bags, cargo packing bags, etc.

5. daily necessities
People at work, farms, market all apply PP woven sacks. You can see PP woven bags everywhere in stores, warehouse, home. The pad material of chemical fibber carpet is replaced by plastic woven fabrics. Such as shopping bags, supermarket shopping bags, supermarket shopping bags for environmental protection; Logistics for logistics freight woven bags for logistics transportation. 

6. flood prevention materials
Flood relief can never leave PP woven bags. The construction of dam, river bank, railway and highway also can’t do without PP woven bags. The PP woven bags in this field are called drought-resisting woven bag, flood control woven bag!

7.special PP woven bags
Some industries, due to special factors, need to use some less used PP woven bags at ordinary times, such as carbon black bag. The greatest characteristic of carbon black bag is sunblock. That means that carbon black bag has strong sun prevention ability than the average PP woven bags. The ordinary PP woven bags can’t stand a long time of sunlight. And UV resistant PP woven bags have the UV protection function as well as the function of anti-aging. 

What is Polypropylene?

 Polypropylene is a plastic polymer with the chemical formula C3H6. It is used in many different settings, both in industry and in consumer goods, and it can be used both as a structural plastic and as a fiber. This plastic is often used for food containers, particularly those that need to be dishwasher safe.

 

The melting point of polypropylene is very high compared to many other plastics, at 320°F (160°C), which means that the hot water used when washing dishes will not cause dishware made from this plastic to warp. This contrasts with polyethylene, another popular plastic for containers, which has a much lower melting point. Polypropylene is also very easy to add dyes to, and it is often used as a fiber in carpeting that needs to be rugged and durable, such as that for use around swimming pools or on miniature golf courses. Unlike nylon, which is also often used as a fiber for rugged carpeting, it doesn't soak up water, making it ideal for uses where it will be constantly subject to moisture.

 

Research is ongoing with polypropylene(PP), as makers experiment with different methods for synthesizing it. Some of these experiments yield the promise of exciting new types of plastic, with new consistencies and a different feel from the fairly rigid version that most people are used to. These new elastic versions are very rubbery, making them even more resistant to shattering and opening up many different uses for an already pervasive plastic.

 

Polypropylene is not as sturdy as polyethylene, but it has benefits that make it the better choice in some situations. One of these situations is creating hinges from a plastic, such as a plastic lid on a travel mug. Over time, plastics wear out from the repetitive stress of being opened and shut, and eventually will break. Polypropylene is very resistant to this sort of stress, and it is the plastic most often used for lids and caps that require a hinging mechanism.

 

Like many plastics, polypropylene has virtually endless uses, and its development has not slowed since its discovery. Whether used for industrial molds, rugged currency, car parts, or storage containers, it is one of a handful of materials the world is literally built around.