Alle Artikel von ChinapetPreform

Pet Preform Production Process Requirements

With the development of economy and society, people’s life has gradually become more colorful. As a important item in modern life, preforms will be widely used in life. To use such a wide range of PET preforms, it is necessary to have strict Production process, let the professional China Pet Bottle manufacturer – Jilian mold to introduce us to its strict production process:

First, PET preforms are typically formed from hot runner molds. It is preferred to have a heat shield between the mold and the injection molding machine. The preform has a thickness of about 12 mm and the heat shield must withstand high pressure. Exhaust must be sufficient to avoid local overheating or fragmentation

Second, the quality of the PET preform depends on the quality of the model provided. Preforms are divided into two types, one is a long gate and the other is a short gate. Domestic preform manufacturers use more short gate parts while longer doors are used abroad. The pre-production of the long rubber mouth is cut by the gate at the bottom, and the tension is evenly distributed during the blowing process, so that the quality of the bottle is better.

Finally, Pet Preform can be recycled at the end of the production process, which helps to save on raw material costs. In today’s increasingly scarce oil resources, domestic manufacturers will be more inclined to long gate preforms.

Jilian Mold Insists On Producing High Quality Pet Preform

Jilian Plastic Mould is a professional PET packaging container enterprise integrating R&D, production and sales. It mainly includes various PET bottles and edible oil PET barrels. It is not only a brand with good reputation in China, but also in the international market. It is also very popular, and it is a China Pet Bottle brand that can be trusted and chosen.

We have domestic advanced automatic blow molding machines, injection molding machines, plastic molding machines and other automated production lines, and are equipped with complete testing equipment, as well as a technology that has many years of experience in the PET packaging industry, with dedication and cooperation. Team and management talent.

We mainly produce PE, PET, PP and other specifications of PET packaging containers (PET bottles), complete product specifications, novel styles, all using new raw materials to ensure product stability and reliability, but also according to customers PET processing and production designed by myself. The PET bottles produced by the company are widely used in medicine, health care products, video, cosmetics and other industries.

We always improve production technology, improve product quality and improve customer satisfaction with advanced production equipment, professional talents and scientific management system. We adhere to the “sincerity-oriented, customer-oriented, quality first, the pursuit of excellence” business philosophy; in the “quality of survival, management and efficiency, reputation and development” as the entrepreneurial spirit; adhere to the “shipping Fast, timely service, quality assurance, small profits but quick turnover is the guideline. To provide products and sincere service to our customers.

Jilian Plastics has always insisted on bringing quality Pet Preform products to consumers in the market. We look forward to cooperating with more customers. Welcome to contact us.

Pet Preform Production Specifications

Because there are many Pet Preform standards, plastic bucket colors and different shapes, so when you grasp the following first selection criteria:

1. Cap seal, water vapor permeability. Air tightness and moisture permeability play a vital role in the stability of charging

2. Plastic bottle product quality standards. Product quality analysis is performed from the manufacturer’s product quality standards to determine if it is desirable. Pet preform enterprises should formulate corporate standards higher than national standards, and professional standards are more stringent.

3. Select the main material of the plastic bottle, the additive formula: the product standard of the solid plastic bottle is the applicable rule of the primary material, and it is necessary to match the non-toxic, no odor, etc., because there are many primary materials, this demand is selected as the material. For the overall function, tablets are generally made of high-density polyethylene, polypropylene bottles, such as PET bottles can be used for transparency of demand, better barrier function of PEN bottles, can be applied to a wider range, and is the best choice for medical supplies.

4. The stability and compatibility of plastic bottles. The use of plastic bottles, especially medical use of new plastic bottles (or new materials, new processes) should be packed with advanced medical tests to check the stability and charge of plastic bottles compatible with medical products. Medical plastic bottles are infiltrated with each other, dissolved, adsorbed, chemically reacted, and denatured can be determined by scientific testing.

5. Quality assurance system. Supplier audits have become an essential part of the purchase of plastic bottles. After reviewing the past, the factory can produce comprehensive and correct reviews of the software and hardware equipment, technical equipment, and overall quality of the product.

Jilian Plastics from Taizhou, China has always insisted on providing reliable and reliable China Pet Bottle to customers all over the world. Our products have also been applied to a wider range. Customers who welcome all kinds of needs are welcome to contact us. We will be your best choice not to be missed.

Factors That Determine The Quality Of Pet Preform

The quality of the Pet Preform mold depends on the quality of the supplied preform. There are two types of preform injection molding, one is a long gate and the other is a short gate. Domestic bottle embryo manufacturers use more short-gate preforms, while foreign countries use more long gates. The preforms of the long rubber mouth are cut off by the gate at the bottom, and the tension is evenly distributed during the blowing process, so that the quality of the bottle to be blown out is better, and the other cut portions can be recycled.

This will help to save material costs. In today’s increasingly scarce petroleum resources, domestic manufacturers will be more inclined to long gate preforms. The manipulation of preform quality during the production process depends on the degree to which the preform is prevented from being scratched during transport. Dingsheng mechanical mold processing factory is a professional manufacturer of various blowing molds, preform molds and hollow blow molds. Since the establishment of the factory, we have been adhering to the principle of honest service and quality priority, making full use of our own technological advantages and professional talents, constantly innovating and improving, and have enjoyed high reputation in the industry and won the support and love of the majority of users. The factory adopts domestic advanced processing technology, closely follows the international mold manufacturing standards, treats every product with excellence, guarantees high quality and high efficiency to complete every detail of mold making, and has established a perfect set of preform moulds. The management system of R&D, production, sales and service ensures the quality of mold processing.

The accuracy of the mold was generally 5 microns 10 years ago, and now it has reached 2 to 3 microns, and soon a 1 micron precision mold will be available. This requires super finishing. The hardware processing mold industry will become larger and larger. This is caused by a multi-cavity that is developed due to the increasing size of the molded parts and the high production efficiency requirements. Multi-functional composite molds in the mold industry will be further developed.

With the development of the China Pet Bottle industry, the demand and requirements for mold products are gradually increasing. In addition to stamping and forming parts, the new multi-functional composite molds are also responsible for assembly tasks such as lamination, tapping, riveting and locking, and the performance requirements for steel are also increasing. And this improvement brings more power to the industry’s technology. In the future development of the industry, technological innovation is naturally the main, and technological upgrading is necessary, which is the most important condition for the rapid development of the industry and market demand.

Jilian Mold Provides A Variety Of China Pet Bottle

Jilian Plastics offers a complete range of Pet Preform for the most diverse applications in a variety of weights, colors and sizes. In addition to the standard sizes, Jilian Plastics also designs and manufactures custom models. Preforms range in weight from 10.5 grams to 121 grams.

With its extensive knowledge and experience in the food, cosmetic and chemical industries, Jilian Plastics is able to develop and supply suitable PET preforms for each liquid product. Bottles made from Jilian mold prefabricated parts are filled with water, carbonated soft drinks, cooking oil, sauces, detergents, milk, beer, juice, and the like.

The preform can have one or more layers. Blocking preforms brings many benefits to soft drinks and beer due to the extra layer being injected between the various PET layers.

Our valuable expertise in the recycling sector enables us to produce (on request) prefabricated parts made from recycled materials. Currently, this is done in two forms: recycled material as a transition layer in a multilayer preform, or a preform made entirely of recycled material for direct contact with food. In general, we are a China Pet Bottle manufacturer that you deserve, and we can provide you with more diversified protection and smooth development in the market.

China Pet Bottle Provides Professional Advice

In fact, certain Pet Preform parts will only differ in part from one device to another, making the design process more difficult in some respects. To make these parts unique and effective, very careful engineering is required.

The aesthetics of many modern pet preforms are also important. People spend too much time on their equipment, so they absolutely want them to look beautiful. They want equipment made of smooth plastic parts that are easy to operate for long periods of time during the day.

However, in many modern industries, people seem to have the same standards for pet preforms. When people compare modern pet preforms to historical pet preforms, it seems that many modern versions were created with special care.

In the past few decades, the tools used in injection molding have certainly improved. Therefore, in the modern world, it is actually possible to create more complex and appealing designs.

Modern pet preform injection molding companies will have the opportunity to use these modern tools that they can use to make excellent pet preforms that are designed to a very strict set of standards. Today, pet preforms are everywhere. These pet preforms must meet many requirements, and they are connected to the market, and the market seems to be moving faster and faster. In order to obtain a high quality pet preform design, it is necessary to work with the pet preform company as all these trends will not change very quickly.

Jilian Plastic is a very good choice. We are a China Pet Bottle manufacturer with many years of experience. We have very professional advice and suggestions on the design and manufacture of our products. Welcome all customers to come to consult and leave a message.

Jilian Mold Provides Efficient China Pet Bottle Products

The cold runner that injects the Pet Preform mold refers to the portion between the mold inlet and the gate. The molten plastic maintains fluidity in the flow path due to the injection pressure and its own heat. However, as part of the molding material, the runner is not a product. Therefore, when designing the mold, we not only need to consider the filling effect, but also need to consider the material saving effect caused by shortening or reducing the flow path; but in fact, it is difficult for us to balance the two, which is why we need hot runner mold

Also known as a no-runner system, a hot runner is a system in which molten plastic does not solidify after each injection, so that when the plastic part is released, the gates in the flow path need not be released. Because the plastic in the flow channel is not solidified, the flow path remains clear the next time the injection is made.

1. Advantages of hot runner molds compared with cold runner molds

Why did you develop a hot runner system? What benefits can the hot runner system bring to us? Engineers familiar with plastic injection molding processes know that traditional injection molding is always accompanied by the following disadvantages:

Difficult to fill; b. Thin-walled large-size parts are easily deformed; c. Material waste in the flow path; when using multi-cavity molds, the quality of plastic parts is inconsistent, and so on.

The advent of hot runner systems provides a near-perfect solution to these problems. In general, hot runner systems have the following advantages:

■ Shorter cycle time

Due to the limitation of the cooling time of the runner, the plastic parts can be discharged in time after molding and curing. For the production of thin-walled small parts, the molding cycle can be kept within 5s.

■Save materials

In a complete hot runner mold, the material is not wasted because there is no cold runner. This has greater implications for the application of more expensive plastic materials. In fact, in the era when the world’s crude oil and raw materials were expensive, the world’s major hot runner manufacturers witnessed a leap-forward development. This is because hot runner technology is an effective way to reduce waste and thereby reduce the cost of raw materials.

■ Reduce defective products and improve product quality

During hot runner injection molding, the temperature of the molten plastic in the runner system can be precisely controlled so that the plastic can flow into each cavity in a more consistent manner, thereby ensuring consistent product quality. The quality of the hot runner gate is higher, so after demolding, the parts produced will have less internal stress, resulting in smaller part deformation. Therefore, many high quality products on the market are produced using hot runner molds.

■ Eliminate the following steps to help with production automation

Once molded with a hot runner mold, the part becomes the final product, so there are no next steps, such as gate dressing, recycling, and runner cooling, to help with production automation. Many manufacturers at home and abroad have combined hot runner systems with automation to greatly increase production efficiency.
2, hot runner type

Advantages of the valve hot runner include:

Shorten production cycle and increase production efficiency;
Since the cold runner is replaced, there is no cold slug, which saves a lot of raw materials;
Improve product consistency without obvious gate marks;
Significantly improve the appearance of the product;
Helps reduce product stress, minimize product distortion and structural brittleness, thereby increasing the productivity and life cycle of complex products;
Provide more process control, allowing precise adjustment of the injection molding process;
Not limited by changes in plastic injection molding materials.

Choosing Jilian Plastic Mould, we are a China Pet Bottle manufacturer with rich experience. We can design reasonable and efficient products according to your actual situation, let you spend the least time to harvest the highest quality products and the most intimate service. . If you are heartbeat, come and contact us!

The Impact Of Pet Preform Production Temperature

Gas-assisted products are very common, such as gas-assisted seats, gas-assisted automotive parts, and more. Therefore, gas-assisted injection molding processes are critical products.
When we debug the gas-assisted Pet Preform molding process, there are some factors that should be noted.

For the gas needle panel mold, when the air is pressed into the gas needle, the inlet imbalance is more likely to occur, which will increase the difficulty of debugging. The main phenomenon is shrinkage. In this case, we always check the gas fluency when deflation.

The temperature of the plastic is one of the main factors affecting normal production. The quality of gas-assisted products is very sensitive to plastic temperatures for the following factors. If the plastic in the nozzle is too hot, it can cause burning and silver streaking. Conversely, if the temperature of the plastic in the nozzle is low, cold glue, cold nozzles, and sealed gas needles may be generated. The product always shows shrinkage and silver streaks. What we can do is check if the temperature of the plastic is reasonable. Check that the gas assisted sensor switch is sensitive. Otherwise, it will cause many unnecessary losses.

The pressure of the gas-assisted product remains dependent on the gas. When the product shrinks, we can reduce the plastic to prevent this trend. This always takes measures to reduce the pressure and volume inside the product, so that the gas is more likely to penetrate the thick plastic layer for filling pressure.

Welcome to the professional China Pet Bottle manufacturer – Jilian Plastic Mould. We have a lot of experience in this field. If you are interested in our molds or other products, please do not hesitate to contact me, we provide mold and plastic molding services for everyone.

China Pet Bottle Creates High Efficiency

Plastic molding is the most important process in creating high quality, durable Pet Preform in modern manufacturing. Because articles made by plastic molding are both strong and economical, it is worthwhile to understand the specific process under this umbrella term.

roll out
Plastic beads, pellets and powder are added to the chamber (extruder) during the extrusion process. The long metal screw in the extruder is continuously agitated and the plastic is liquefied by mechanical friction. The chamber then makes the plastic into the desired end product, which is then transferred to a conveyor belt and cooled with water. Then trim or sand any rough edges on the plastic and finally trim the items. This process is most commonly used to produce simple plastic products such as pipes and sheets, products without various angles and ridges.

Injection molding
Injection molding includes a funnel, a chamber for collecting liquid plastic (where liquid plastic can be injected or liquefied by an external heat source). From here, the plastic is forced into the metal mold under high pressure until no air bubbles remain in the mold. Once completed, the item is allowed to cool before being removed, cleaned, and completed from the mold. This method is best suited for solid plastic products that are more complex in shape than pipes or plates – toys, plastic silverware and automotive parts are examples of products that are best manufactured by injection molding.

Blow molding
Blow molding is similar to injection molding because it uses liquid plastic and metal molds. The difference is that blow molding is designed to make hollow objects, such as water bottles. Instead of being pressed directly into the mold, the plastic is poured into a plastic tube called a parison. The parison is sealed at each end, inserted into the blow tube, and air is forced into the plastic to expand and form the shape of the mold. Once completed, the item is removed and excess plastic sheets (“flash”) are cut from the ends of the parison to produce the finished product.

in conclusion
Using these three processes, plastic can be made into objects that almost anyone might need to use. If you now have the demand for pet prefabrication, then the choice of China Pet Bottle manufacturers can bring you more benefits. Welcome to contact Jilian Plastics to obtain more efficient products.

China Pet Bottle Welcome To Contact

Establish optimal reheat-blowing conditions for Pet Preform
In order to produce a uniform bottle sidewall thickness, the RHB conditions must be properly adjusted. Recommended procedures for establishing optimal conditions:
1. The stretching rod should only be used to center the gate of the preform at the bottom of the bottle; do not use it to obtain the orientation. If the speed of the lever can be adjusted, lower it to the center of the gate. Then increase the speed in very small increments until the gate is centered again. Keep the speed setting.
2. Increase the line speed until a slight pearlescence occurs. Then adjust the temperature of each heater to make the pearlescence uniform. The transparent areas indicate that the preforms are hot at this location; the temperature of these areas should be reduced. After the pearl is even, reduce the line speed to the normal setting.
3. If the machine is operating at maximum speed, a different approach is required. Lower the temperature of the heater until a slight pearlescence occurs; then adjust each heater to make the pearl even. After unification, record the settings. The temperature of each is then increased by the same relative amount. For example, if one heater is set to 80 and the other heater is set to 40, and it is desired to increase by 5%, then they are increased to 84 and 42, respectively. By doing so in small increments, the pearls should disappear in a uniform manner.
4. If the thickness of the side wall of the bottle is not uniform, increase the pre-low pressure and check the uniformity again. If this makes the sidewalls uneven, reduce the pre-low pressure.
5. Once the optimum pre-low pressure is established, it is sometimes possible to make further improvements by adjusting the timing of the pre-low pressure relative to the timing of the stretching rod. Therefore, the pre-flow timing is changed to start earlier and later in the sequence, and the results are evaluated to determine which timing is best.
Note: Pre-low pressure and time have a large effect on the thickness of the shoulder and bottom of the bottle. An increase in both generally increases the thickness of the substrate, and a reduction in both generally increases the thickness of the shoulder.
6. If the uniformity cannot be significantly changed by changing the pre-low pressure and its timing, increase the high-pressure blow delay time. The high pressure may come too fast, so the pre-extraction time will not be given to complete the work.
7. If the change in high pressure delay does not provide the required thickness uniformity, try increasing the stretch rod speed in small increments.
8. As a last resort, change the heater profile. When adjusting the machine, do not change more than one variable at a time. If you change two variables at the same time, one change may improve the uniformity of the sidewalls, while the other may make it worse, and the end result is unchanged. This may lead to a wrong conclusion that neither of these changes has any effect.

Jilian Plastic Mould from Huangyan is one of the best China Pet Bottle manufacturers. We provide various professional products and equipment for customers in the market. Welcome to contact us!