タグ別アーカイブ: Pet Preform

China Pet Bottle Usage Is Growing Rapidly

Development status and trend of global non-fibrous PET

Non-fibrous PET was first introduced by Kodak as a substrate for photographic film. Since the mid-1980s, Coca-Cola introduced this variety into the beverage packaging field. Since then, non-fiber PET has developed rapidly and has been developed into bottles. , film, sheet, engineering plastics, packing belt (plastic steel belt) and other fields, only PET pellets for food grade bottles have mineral water, carbonated beverages, hot canned beverages, white wine bottles and beer bottles, etc. Classification. The global PET production capacity for packaging in 2005 reached 14.5 million tons, and its distribution is as follows:

China’s packaging and non-fibrous PET started late, but it has developed rapidly. In 2005, China’s Pet Preform production capacity reached 3.1 million tons, and the output reached 1.7 million tons, of which 1.2 million tons were sold domestically and 500,000 tons were exported. According to the current consumption of PET in bottles in Europe and the United States (17KG/person in the US, 20KG/person in Europe) and the proportion of total PET production capacity, there is still much room for development of PET production for packaging in China (currently 1.3KG/person), it is expected that its growth rate should be 15%/year, which means that the production capacity will be close to 6.5-7 million tons/year by the end of the 11th Five-Year Plan.

Conclusion: Due to the rapid growth in the use of disposable China Pet Bottle, new pressures are placed on environmental protection in China and the world. We often say a word “waste is put together as garbage, and waste is placed separately as a resource.” If we can do a good job in the recycling and utilization of waste PET, it will not only reduce environmental pollution, but also provide a new raw material route for human beings.

Chinese Pet Preform Mould

Blow molding is a molten tube (called a parison or preform) formed of a thermoplastic material (polymer or resin). The parison or preform is placed in a cavity, which is expanded by compressed air to form a cavity. It is cooled before being taken out of the mold. Nowadays, China Pet Bottle have been loved and trusted by customers all over the world for their excellent quality and suitable price.

Any hollow thermoplastic part can be made into a blow mold. Parts are not limited to bottles, they have only one opening, and their diameter or size is usually smaller than the overall size. These are some of the most common shapes used in consumer packaging, but there are other typical blow moldings.

The basic concept of blow molding comes from the glass blow molding process. As early as the 1880s, there was a patented method for extrusion molding and blow molding of cellophane polymers. Early methods and materials for blow molding plastics were very rough and not suitable for large-scale production. It was not until the late 1930s that the first commercial machines and products were used to produce blow molded bottles. The main event that sparked and drove early commercial blow molding was the development of low-density and high-density polyethylene for blow molding and consumer packaging.

The main difference between blow moulds is the method of forming the parison; the size of the parison and the method of moving between the parison and the blow mould by extrusion or injection molding; whether fixed, shuttle, linear or Rotating.

In an extruded Pet Preform mold (EMM), the polymer melts and the solid extruded melt is extruded through a die to form a hollow tube or parison. The two halves of the cooling mold are then closed around the parison, pressurized air is introduced through the pin or needle, and it expands into a mold shape to form a hollow portion. After the hot plastic is sufficiently cooled, the mold is opened and the parts are taken out.

China Pet Bottle Have A Better Reputation

It seems that the extrusion flash is only a one-time phenomenon in the molding process. However, the way the flash is designed is critical to maintaining the integrity of the Pet Preform. Here are some things that might go wrong:

The flash bag did not fill up enough space, so the pressure to push the plastic back into the container was too small to properly weld the gap. This condition is characterized by a “v” shaped notch at the pinch, indicating that the seam may be weak where the seam may crack.

The flash pocket is not large enough to hold all of the flash material, which creates excessive pressure towards the container. This creates a very thick plastic bump at the pinch. Depending on the characteristics of the plastic, the cooling rate and other processing factors, this extra thickness may cool at different speeds, move the volume, and cracks may occur.

If the processing conditions or mold pinch-off geometry is incorrect for any reason, it may have a negative impact on the integrity of the parison bond in the pinch-off area where the edges of the two molds are joined together.

After molding, the flash is removed manually or mechanically. Care must be taken, otherwise the container/part may be damaged, just like any post-forming process.

Flash can affect the appearance and function of plastic containers or components. Rough or excessive flash is visually unattractive. Excessive flash around the bottle neck can interfere with proper operation of the lid or cap.

Good extrusion blow molding design and engineering repair flash

Many adjustments can be made to solve the flash and pinch-off problems. This is mainly science – there is still a little art.

Pay special attention to the pinch-off area on the mold to ensure proper clearance. When the part is removed from the mold, too small gaps and flash edges will fall into the molded assembly. The gap is too big, it is difficult to trim, and it looks bad. Check the mold regularly to make sure the pinched land is in good shape.

Changing the parison thickness and clamping speed helps to adjust the amount of plastic that is pressed back into the container.

Changing the viscosity of the parison can adjust how much material will flow back into the container.

Control the duration and pressure of air blown into the mold. Make sure the process provides proper ventilation.

Test different flash pocket shapes. Adding a baffle or channel changes the speed at which the plastic is pushed back into the container and also affects the cooling rate.

Jilian Plastics has continuously adjusted the design and crafts of China Pet Bottle. We have also won the love and praise of many customers and determined to become a better reputation in the market.

Preparations Before Purchasing China Pet Bottle

Pet Preform can bring you a lot of benefits, people are trying to use it, and manufacturing is also building a separate industry, especially for these containers.

But before choosing a PET preform container, you need to check its optimal state so that you get the best possible condition. So let’s look at some of the most desirable features that each of the best performing containers must have.

In order to reduce expenses, people may ignore this, but in order to get the best performance container, this should not be avoided at any cost. Never damage the quality of your product, make sure your PET prefabricated line container is of good quality and is completely resistant to damage.

The higher the quality of the pet container, the better its performance, and the better your benefits. So, see to understand good quality characteristics and then select the desired container.
Safe and non-toxic?

PET containers are known for their non-toxic behavior, but some manufacturers that make huge profits make toxic and unsafe containers. These can damage your storage material and destroy its quality; therefore, you need to determine the toxicity of the container.

Therefore, when purchasing China Pet Bottle, make sure you get the correct characteristics of non-toxic and safe, and encourage easy and safe storage of items. Therefore, before purchasing, please identify these features and then select the desired container.

China Pet Bottle Modern Production Technology

One of the simplest and widely used methods of making plastic products is injection molding. Plastic resins are injected into molds – preferably Pet Preform molds and molds – for the production of plastic parts and products with the most complex contours and the most demanding physical features. In addition, the spiral use of injection molding can be attributed to its ability to mass-produce dimensionally accurate engineered parts.


Injection molding technology is considered an important plastic manufacturing technology. With advances in technology, there have been many improvements in injection molding technology. At present, the development of injection molding technology allows plastics manufacturers to use alternatives to traditional materials, thereby reducing the weight of the final product and giving them the freedom to design. These technology updates have also affected how pet mold makers design molds.

Integration of computer technology:

The latest injection molding equipment relies heavily on computers to operate. Today, most of the general operations (resin feed, injection of molten material into the mold, etc.). ) is controlled by a built-in computer.

Micro injection molding:

When manufacturing tiny parts, the contours require the highest precision. Microinjection molding technology was developed to meet the needs of plastics manufacturers. The microinjection unit is defined for small plastics that need to be processed. The microinjection unit can be incorporated into an injection molding machine to achieve a clamping force of approximately 500 kN.

Multi-component injection technique;

The term refers to the sandwich technology, including several other technologies, such as: –

Water injection technology
Gas injection technology
Co-injection technique
Single sandwich technology

Modern injection molding of China Pet Bottle has become an indispensable element in the manufacture of several plastic parts, such as electrical switches, power tool housings, and battery housings.

Jilian Mold China Pet Bottle The Most Suitable Price

Extrusion blow molding processes are most commonly used to make hollow Pet Bottle Mould. These containers can be used in almost any size, from small squeeze bottles.
Materials used in blow molding

There are many materials for blow molding, but they are limited to thermoplastics.

Polyethylene is the most commonly used in blow molding materials, more specifically HDPE and HMWPE (high molecular weight polyethylene). The use of these high quality materials is more cost effective than the performance of low density polyethylene.

While these materials may be more expensive, the walls of the container can be thinner while still producing a high quality end product. Other materials used in blow molding production include PP (polypropylene), PVC (polyvinyl chloride) and polyethylene terephthalate.
High-density polyethylene

HDPE stands for high density polyethylene and its inherent properties make it suitable for a variety of applications. It has high tensile strength, high rigidity, excellent chemical and solvent resistance, and meets FDA standards for direct food contact. Each year, more than 8 million tons of HDPE are used to make blow molded containers such as detergent bottles, milk jugs, and trash cans.

This accounts for almost a third of the world’s annual HDPE production. Although the container for consumer goods constitutes a large part of the blow molded product, it is also used in many other products. Toys, large storage tanks, 55-gallon drums and gas tanks for transporting liquids or powders are just a few of the other products made with HDPE.
What products have been created by blow molding?

Blow molded products can be used to produce high quality, functional and lightweight containers that are ideal for a wide range of applications. Although the materials may vary, depending on the product being produced, the durability and cost-effectiveness of blow molding are consistent.

Jilian Plastic mold produces high quality China Pet Bottle blow molding products for everyone. Welcome to leave a message and we will bring you the most suitable price.

Pet Preform Production Process

From ordinary keyboards to all tiny plastic parts, plastics have an appearance in almost every respect, presenting countless different shapes and sizes. How does blow molding a Pet Preform or plastic product work?
Plastic production process

Many of these plastic products begin with a process called plastic extrusion. Back in the late 18th century, this process involved heating small plastic pellets at elevated temperatures, forcing them to form and allowing them to cool and harden. The use of a heated screw feeder helps to push the molten plastic into the mold.

After this process is completed, many of these forms are heated again for another process called sheet or film extrusion. Then, the remelted plastic is cooled and pressed by a calender roll to diffuse and harden to form a plastic sheet.
The benefits of extrusion blow molding

These sheets can be reworked in another process called coextrusion. To this end, multiple extruders are melted together and forced into a single mold. This gives the plastic product a softer feel, a smooth surface and a gripping surface.

The last plastic processing is thermoforming. This process uses a plastic sheet that is heated until it becomes soft and then pressed into the mold. Vacuum is sometimes used to force it into the complex form required.

Because plastics play such a wide range of roles, the number of processes that mold and shape them is not surprising. From the keyboard to the Pet Bottle Preform, plastic is an important industry.

Changes In The Development Of China Pet Bottle

In recent years, with the improvement of residents’ consumption awareness and purchasing power, China’s beverage industry has made great progress, the market scale has been expanding, and products have gradually diversified. It has evolved from a single soda to include carbonated drinks, juice drinks and energy drinks. The drinking water and beverage systems within the company provide consumers with more choices.

Pet Preform have only been in China for 10 years. The history of PET bottles and hot filling in China is relatively short, only about 4 years, but the development momentum surpasses most other packaging containers. This momentum is mainly attributed to tea drinks. Rapid development. As we all know, tea beverages and fruit juice beverages are hotspots for beverage development. In China, the output of tea beverages in 2000 has exceeded 1.5 million tons, and most of them use PET hot-filled bottles, and the proportion has an upward trend.

Filling microbe-sensitive products such as tea, juice, wine, dairy products, sauces, vegetables, spices, etc. is a challenge to traditional bottling techniques, as microbes can cause bacteria and mold to grow, causing damage to the color and taste of the product. . The problem with the traditional method is to use hot filling, but the hot filling technology has many shortcomings, such as high container cost, long-term exposure to high temperature conditions, resulting in loss of flavor and high energy consumption.

Now the machine can be called a small soda plant. It only needs qualified water, electricity and carbon dioxide, and it is equipped with syrup to make high-quality carbonated drinks on the spot. As the largest component of the ready-to-eat family market, brewers are now widely used throughout the world. The beverage giants Coca-Cola and Pepsi have long been used extensively. The basic configuration of global fast food chains such as McDonald’s, KFC and Pizza Hut is necessary. Brewed beverages have unparalleled features and advantages over standard packaged beverages. The beverage brewing machine is only a container made of paper cups, which is easily degraded and is increasingly threatened by environmental pollution for human beings. Now it is the choice that beverages have benefited for hundreds of years in the contemporary era.

As a food packaging, the main requirement is to facilitate storage and transportation, reduce the loss of original performance, no additional damage, increase sensory enjoyment, and reasonable price. At present, the main means of liquid food packaging are: ordinary packaging, secondary sterilization packaging, including canning, bottle and bag, hot filling, vacuum packaging, plastic packaging, radiation sterilization and aseptic packaging. Aseptic packaging of liquid foods is a new technology developed in recent years, and its development is very rapid due to its obvious advantages.

The domestic beverage industry market is an emerging industry with slow development after reform and opening up. The renewal of beverage machinery and equipment has also driven the development of China Pet Bottle industry. From the Chinese beverage industry to nothing, from small to large, from basic to scale gradually become a society. One of the important industrial foods essential to the market, and presents four major developments. The development of the beverage industry has also driven the development of the national economy in terms of comprehensive factors, and made due contributions to improving the living standards of the socialist people. It is believed that the beverage market environment will have new developments in the diversified demand for the beverage machinery market.

Pay Attention To The Peeling Of The Pet Preform Mold

Most mold companies are hot runners that make their own Pet Preform molds, which is not common in China. By making their own hot runners, they can also better control the quality and price of the hot runners. However, the stable operation of the hot runner requires a high degree of mindset and sophisticated equipment. Therefore, the company needs to make huge investments in mold equipment.

Internal threads are usually found in PET molds, but can also be designed in many technical products, such as plastic tube hardware. The planned manufacturing method (molding or post-molding processing) should be considered. If the lid is threaded after molding, the lid mold will be simpler (and less expensive) and the designer should understand the amount of production required. As we said before, achieving the lowest total cost product is more important than the most elegant manufacturing method. If a thread must be formed, we have two choices: how to remove the product from the core: by loosening or peeling.

Designers of plastic cover molds must consider whether the plastic cover can be peeled off from the threads. Peeling is the simplest (usually the lowest cost) solution for ejecting the top cover or closer to the top cover; however, the ease of peeling depends on many equally important factors.

The stripping theory is very simple. When the cover mold is opened, and after the cavity is removed from the side of the core, the demolding caused by the forward movement of the stripper begins. In this way, the plastic cover is pushed onto the ridge of the core; this causes the plastic to expand so that the portion of the core within the groove can slide out of the groove.

Choosing Jilian molds from China, we produce high quality Pet Bottle Preform, which can save you a lot of troubles.

Jilian Mold Provides Different Pet Bottle Preform Production Line

Pet Preform have never been so popular in today’s world. There is no doubt that everyone from anywhere uses PET containers for beverages, food, cosmetics, medicines, cleaning supplies… Believe it or not, it is impossible to live without PET bottles.
What machines and equipment are needed to make PET bottles?
Plastic preforming dies are at the heart of PET bottle production lines. In addition, injection molding machines, blow molding machines, etc. are also very important.
What is a plastic preform mold? The plastic preform mold is a plastic preform mold technology and pre-form mold solution that requires a preformer, preform mold and plastic. Preforms are used to make plastic preforms. These plastic preforms will then be made into blow molded articles, such as bottles.
Plastic preforming dies must be made before blowing the bottle mold. There is no doubt that high quality plastic preform molds produce excellent PET preforms. We have custom designs based on our more than 10 years of PET bottle production experience and knowledge… With specially designed injection molding machines and plastic preforming dies, high quality preforms are at your fingertips. As one of the main machines in the production of PET bottles, plastic preforming dies are as important as blowers, producing high quality bottles.
Plastic preform mold configuration:
Eccentric adjustment system
The eccentric adjustment system allows the preform wall thickness error to be less than 0.05 mm. The system does not affect the life of the mold;
Self-locking system
Our pre-formed molds use an internationally advanced two-way fixed-direction self-locking structure.
cooling system
All the water channels inside the mold make this cycle time short enough. All cooling channels are specially treated to prevent blockages;
Heating system
The dual heating system ensures good heating and reliable quality control. The heating belt unit provides a constant temperature to the nozzle. The heater unit is used to heat the hot runner plate, which has a long service life and a strong heating capacity. The heating belt in our preformed mold is a “heat setting” imported from Germany.
Hot runner system
The pre-formed mold uses a pin-and-valve hot runner system that reduces wear and maintenance costs of the mold components and saves 10% to 15% of electrical energy;
Hydraulic injection system
The pre-detachment success rate has achieved a steady endurance and the entire pre-off process will become quieter.
As a high-quality mold manufacturer in China with nearly 10 years of history in the PET bottle mould and plastic preform mold manufacturing industry, China’s largest supplier of Pet Bottle Preform also offers the technology of such plastic preforming molds. And solutions. Jilian Plastics provides turnkey projects for many plastic preforming dies to different countries.