Plastic packaging processes and machinery

Today plastic packaging is no stranger to the product and is widely used in our daily lives. The demand for plastic packaging is increasing day by day, the image requirements, the size is increasing and with many different uses. To better understand plastic packaging, let's learn some of the following information:
 

On the market today, plastic packaging is very diverse, depending on the purpose of use so customers can choose the appropriate packaging. Here are some common packaging patterns

The most common type of packaging used today is the plastic products we often use. When you go to the market, supermarket, grocery store or anything, the packaging is this type of packaging.

Advantages:

Owning superior properties, PE plastic packaging has many advantages compared to other types of plastic packaging such as:

Durable, light, durable

Good waterproofing ability

 High heat resistance

 Absolutely safe for health

 Beautiful and diverse models

Soft, smooth surface makes it convenient to print logo, brand to help convey the message of the business in the most optimal way

 Competitive price

 Widely used in many fields such as agriculture, industry, fisheries, pharmaceuticals, cosmetics ...

Defect:

Besides many advantages, PE plastic packaging has a few shortcomings, but not many of us pay attention to because they do not have a big impact, namely:

PVC packaging has the ability to waterproof O2, CO2, N2 and poor grease

 Damaged when exposed to aromatic essential oils or detergents such as Alcool, Aceton, H2O2 ...

PVC packaging can absorb the food smell in the packaging, which loses the senses and value of the food.

PVC packaging is often used to shrink bottles, bottles or shrink film for a short time. In addition, it is used to make many household materials and other products such as electric cables, plumbing, raincoats, etc.

This packaging model has transparent properties, mechanical strength and very high stiffness. The cost is nearly 3 times higher than PP, PET plastic so it is less used. Better waterproofing than PVC and PE packaging, but inferior to PET and PP. Especially, this model can withstand temperatures above 100 ° C. PC packaging is often used as a bottle, a bottle, a lid containing food but needs to be sterilized.

PET plastic packaging samples have high mechanical strength, withstand tear force, high impact force. Inert to the environment and food. This packaging pattern is often used as plastic bottle bottles.

PP plastic packaging has 2 types: clear white and milky white. High mechanical strength, good load resistance, good waterproofing, quite hard and not flexible. Not stretched but easily torn when punctured. This product is used to form fibers to weave into PP fabrics as plastic packaging. In addition, it is also used as an outer covering film to increase preservation features and ease of printing.

The plastic packaging production process is quite simple. Particularly for food plastic packaging, it is necessary to select quality assurance materials.

- To create finished products that are completely new plastic particles from used materials, the plastic granulator has a special special operating principle.

This device operates based on a closed and seamless circulation process from the stage of loading materials until releasing products. In particular, the entire process takes place automatically, the machine will do everything under the control of the standing technician.

From the used materials, the machine will create new plastic particles, made of polymer molecules with high molecular weight. Because of this factor, the plastic granulating machine product line is divided into several groups based on product characteristics such as PP, PVC, PE plastic granulating machines, ...
 

 

- Thread pulling stage: PP resin is loaded into the hopper of the fiber generator and then put into the extruder by vacuum and hot melt. Screw extruding liquid plastic to mold mouth length and thickness is adjusted as required. At that time, the plastic film is formed through shaped cooling water tank and then goes to the knife shaft to split into each required width. Next, the yarn undergoes a heating section to stabilize and then fed into the spinning machine. This stage uses a blower

 

- Printing stage: The roll film will be put into the printing machine according to gravure printing technology, where printing the details on the surface based on the design requested by the customer through the tube printing cylinder. copper. Use a concave printer system to produce customized prints.
 

 

- Stage of finished products: The semi-finished products created will be sewn in the form of bottom splint, the other end is empty, for customers to close the product, at this stage, the packaging is almost completed in form. .

It is the main stage in the specifications of plastic packaging production, in addition to the different and complex requirements, the type of dry film laminating machines, bag collectors, straps, etc.