Pet Preform Must Have Higher Production Requirements

Throughout the entire food and beverage packaging market, we can clearly see that in order to eliminate the technical barriers caused by food and beverage packaging and other reasons, we will need advanced packaging equipment and materials in line with international standards to cope with its development, which is also domestic food. Packaging companies such as beverage Pet Preform have put forward higher requirements and a broader market space.

From the perspective of the company itself, the future packaging of pharmaceuticals will start from safety. The packaging of medicines should be more concise, clear and beautiful. Under the premise of ensuring that it is not easily damaged during transportation, even if it is saved, it should not be too packaged. The quality of the employees of the company to promote the market competitiveness of the company.

1, high insulation packaging. High insulation packaging is the application of high-quality materials to restrain gas and water vapor. Odor, light, etc. enter the package to ensure the effectiveness of the drug. The application of high insulation packaging has been very extensive in Europe and Japan, and China has introduced high isolation packaging such as PVDC since the 1980s, but it is slow to grow. Therefore, the growth of high insulation material packaging is a major trend in China’s pharmaceutical flexible packaging;

2, antibacterial packaging. Although the clean environment for pharmaceutical production is planned according to GMP requirements, it is not absolutely sterile in any of the dosage form production and packaging processes. Therefore, in order to extend the shelf life of drugs and the safety of drug administration, the pharmaceutical packaging should be accepted according to GMP requirements to prevent bacterial contamination, which will become one of the directions of flexible packaging of drugs;

  1. “Green” packaging. The “green” packaging of medicines refers to packaging that is harmless to the ecological environment and human health, and the packaging materials can be recycled. After the implementation of the ISO1400 standard, the development of “green” packaging has become a necessity. In the future, it will open up and generally adopt new environmentally-friendly packaging materials such as remanufacturing, degradable and returning to nature, and ignition without polluting the atmosphere;
  2. Less metering and packaging. Less metering packaging requires the measurement of the inner packaging of the medicine, including the packaging material with the measurement results and the disposable packaging, the latter is the common less metering packaging. In the United States, in 1990, all kinds of packaging were widely used. With the development of composite materials and the growth of sterilization packaging technology, China has been able to effectively guarantee the accuracy of one-time packaging of liquid and solid agents, but it will continue to grow. Small metering package for this convenient and precise soft packaging situation;

5, environmental conditioning packaging. The so-called “environmental conditioning package” is to change the state of the gas in the package, and to cover the quality of the packaged product for a long time, such as packaging of desiccant (oxygen absorber), atmospheric replacement (nitrogen filling, etc.). This packaging situation will continue to be widespread;

6, “sterile” packaging. “Aseptic” packaging is a method of sterilizing and packaging the packaging drugs in a “sterile” environment, and adopting the method of sterilizing and packaging the packaging drugs, and using the composite materials to determine the difference of the situation of extrusion, composite molding and packaging. It has the advantages of better linking of medicines, extending shelf life, saving energy, low packaging cost, and easy realization of environmentally friendly packaging;

7, serialized packaging. The serialization of pharmaceutical packaging is that the pharmaceuticals produced by the same manufacturer accept uniform and similar packaging elements. The packaging of pharmaceuticals, such as blister packaging, can determine the size of the plate and the changes in the relevant elements of the aluminum foil screen to reach the series packaging. With the implementation of OTC in China’s food and beverage industry, serialized packaging is increasingly cherished, and it will also be able to expand its capabilities in the future development of pharmaceutical flexible packaging;

8, nano packaging. The application and development of nanotechnology and nanomaterials in the field of food and beverage provide a golden opportunity for Chinese pharmaceutical packaging. The growth of nanopaper, polymer-based nanocomposites (PNMC), nano-adhesives and nano-antibacterial packaging will open up new areas for flexible packaging of pharmaceuticals.

The China Pet Bottle designed and manufactured by Jilian Plastic has obvious characteristics. We provide diversified product selection and comprehensive after-sales service for our customers. We choose you to let you have no worries. If you are interested, please come to us. Leave a message.

How To Buy High Quality And Reliable China Pet Bottle

Important factors affecting the Pet Preform blow molding process include preforms, heating, pre-blowing, molds and production environments.

1 preform

When preparing a blow molded bottle, the PET slice is first injection-molded into a preform, which requires that the proportion of the secondary regrind should not be too high (less than 5%), the number of recovery should not exceed two, and the molecular weight and viscosity should not be too low (molecular weight 31000- 50000, intrinsic viscosity 0.78-0.85 cm3/g). According to the National Food Safety Law, secondary reclaimed materials should not be used for food or pharmaceutical packaging. Injection molded preforms must be stored for 24 hours to be used above. The preforms that have not been used up after heating must be stored for another 48 hours to be reheated. Preforms should not be stored for more than six months.

The quality of the preform depends largely on the quality of the PET material. The material that is easy to inflate and easy to set should be selected and a reasonable preform molding process should be established. Experiments show that the preforms of PET materials with the same viscosity are easier to blow molding than the domestic materials; while the same batch of preforms has different production dates, the blow molding process may also have a big difference. The advantages and disadvantages of the preform determine the difficulty of the blow molding process. The requirements for the preform are pure, transparent, free of impurities, no discoloration, suitable length of the spot and surrounding vignetting.

2 heating

The heating of the preform is done by a heating oven, the temperature of which is manually set and automatically adjusted. In the oven, far infrared rays are emitted from the far-infrared tube to radiate heat to the preform, and the fan at the bottom of the oven performs thermal circulation to make the temperature in the oven uniform. The preform rotates while moving forward in the oven, so that the wall of the preform is heated evenly.

The arrangement of the lamps in the oven is generally “zone” shape from top to bottom, with more ends and less in the middle. The heat of the oven is controlled by the number of lamps opened, the overall temperature setting, the oven power, and the heating ratios of the sections. The opening of the lamp should be adjusted in conjunction with the pre-blowing bottle.

In order to make the oven work better, the adjustment of its height and cooling plate is very important. If it is improperly adjusted, it may easily appear in the bottle opening (the bottle mouth becomes larger), the hard head neck (the neck material cannot be opened), etc. during blow molding. defect.

3 pre-blowing

Pre-blowing is a very important step in the two-step blowing method. It refers to the pre-blowing of the preform while the stretching rod is lowered during the blowing process, so that the preform has a shape. The pre-blowing position, pre-blowing pressure and blowing flow rate in this process are three important process factors.

The pros and cons of the shape of the pre-blowing bottle determines the difficulty of the blow molding process and the performance of the bottle. The normal pre-blowing bottle has a spindle shape, and the abnormal one has a bell shape, a handle shape, and the like. The cause of the abnormal shape is local heating improperly, pre-blowing pressure or insufficient blowing flow, and the size of the pre-blowing bottle depends on the pre-blowing pressure and the pre-blowing position. In the production, it is necessary to maintain the same size and shape of all the pre-blowing bottles of the whole equipment. If there are differences, it is necessary to find the specific reason, and the heating or pre-blowing process can be adjusted according to the pre-blowing conditions.

The pre-blowing pressure varies with bottle specifications and equipment capabilities. Generally, the capacity is large and the pre-blowing pressure is small; the equipment has high production capacity and the pre-blowing pressure is also high.

Even if bottles of the same specification are produced from the same equipment, the required pre-blowing pressure is different due to the difference in performance of the PET material. Glass fiber reinforced PET material, the small pre-blowing pressure can make the macromolecule at the bottom of the bottle correctly oriented; other improperly used or improperly formed preforms, a large amount of stress concentration near the injection point is not easy to subside, if Blow molding, often blows at the point of injection or bursts and leaks from the point of injection during the stress test. According to the orientation conditions, the lamp can be removed from the 2-3 rods as shown above to be opened above the injection point, and the spot is sufficiently heated to provide sufficient heat to prompt its orientation.
For preforms that have been heated for secondary use or preforms that have exceeded the storage time, the molding process is similar due to the time-temperature difference effect. Compared with the normal preform, the required heat is less, and the pre-blowing pressure is also appropriate. reduce.

4 auxiliary machine and mold

The auxiliary machine mainly refers to the equipment that maintains the temperature of the mold. The mold constant temperature plays an important role in maintaining the stability of the product. Generally, the temperature of the bottle is high and the temperature at the bottom of the bottle is low. For cold bottles, since the cooling effect at the bottom determines the degree of molecular orientation, it is better to control the temperature at 5-8 ° C; the temperature at the bottom of the hot bottle is much higher.
Mold is an important factor affecting the blow molding process of PET preforms. The advantages and disadvantages of mold shape will reduce or increase the difficulty of process adjustment. For example, the ribs, the curvature of the transition zone and the heat dissipation at the bottom all have an impact on the process adjustment.

5 environment

The quality of the production environment also has a great impact on process adjustment. Constant temperature conditions can maintain process stability and product stability. PET preform blow molding is generally preferred at room temperature and low humidity.

If you want to buy high quality and reliable China Pet Bottle, Jilian Plastic is your very good choice. Our brand has developed in the market for many years and accumulated a wealth of experience. Tell us your needs and we will develop a production plan for you.

Jilian Mold Pet Preforms Harvest Praise

As a China Pet Bottle technology expert, Jilian Plastics is using its expertise in hot runners to produce new preform molds, fully exploiting the potential of existing injection molding machines and breaking through product limitations.

Now, Chinese pet bottle manufacturers can use a mold with a non-standard cavity number to significantly increase production without adding extra stress to their machines. Jilian Plastics has just created this 180-cavity mold for a universal 500-ton machine that typically does not exceed 144-cavity molds, increasing productivity by 25%. More non-standard molds are being developed and these molds can be used on smaller machines.

We are using open and available technology to improve the quality of our Pet Preform, allowing our brands to maintain a competitive edge in the highly competitive marketplace and gain more customers’ love and praise.

Jilian Mold Is A China Pet Bottle Expert Around You

The forming principle of PET bottles: PET bottles are formed by the filling of gun molds under a certain temperature and pressure. They can be formed by processing Pet Preform or directly by injection molding.

When the surface of the PET bottle is marked, the surface of the label should be flat. A “sash” can be designed on the surface of the PET bottle to make the label accurately positioned without moving. At the time of blow molding, the portion where the parison inflates first contacts always tends to be hardened first. Therefore, the wall thickness of this part is also larger. The edge and the corner portion are the portions of the parison that are inflated and contacted, and the wall thickness of the portion is small. Therefore, the edges and horns of the PET bottle should be designed to be rounded. Changing the surface shape of the PET bottle, such as the relatively thin middle portion of the PET bottle, increases the circumferential groove or rib of the surface of the PET bottle, which can improve the rigidity and bending resistance of the PET bottle. Longitudinal grooves or ribs eliminate the offset, sagging or deformation of the PET bottle under long-term load.

As a China Pet Bottle manufacturing expert around you, we provide you with a diversified product range. No matter what your needs, we can design and customize for you. Welcome interested parties. Customers come to contact us.

China Pet Bottle Are More Resistant To Heat

The heat resistance of Pet Preform used in our daily life is not very good. This problem is very headache for us. Jilian molds provide measures to improve the heat resistance of pet preforms.

1 preform injection cooling time control. Strictly control the cooling time of the preform injection, so that the preform can be demolded as soon as possible. This shortens the molding cycle and increases the yield, and induces globular crystallization due to the higher residual temperature. The crystal diameter of the spherical crystal is extremely small (only 0.3 mm to 0.7 mm) and does not affect the transparency.

2 Choose a reasonable preform and bottle design. The optimized preform shape design and bottle mold design help to improve the wall thickness distribution of the bottle and avoid distortion or shrinkage deformation in different areas of the bottle body;

3 Strictly control the injection and draw-blow process parameters and the temperature distribution of each zone to prevent the residual stress from being released at the PET glass transition temperature (>75 °C) and cause the bottle to deform.

4 cycle blowing technology. When using a hot blow mold, how to control the deformation of the bottle after demolding is essential. Before blowing the mold, the air is blown into the air and circulated, and the bottle body is cooled and shaped to control the amount of deformation after demolding. The intake air of the circulating cooling air passes through the same passage as the initial blowing and the secondary blowing, but is exhausted from the small hole of the head of the drawing rod through the drawing rod. The cycle blowing time is about 0.5 seconds to 2 seconds. Therefore, the high-pressure air consumption of the heat-resistant bottle bot is much higher than that of the ordinary bottle bot.

5 blowing bottle mold temperature control technology. The blowing mold is usually heated by the hot oil circulation method, and the blowing mold is adjusted in three cycles: the bottom of the bottle is cooled. Keep the bottom of the bottle at a low temperature (10 ° C ~ 30 ° C), to avoid excessive crystallization of the unstretched bottom of the bottle and whitish.

Bottleneck temperature adjustment (optional). The non-crystalline bottle mouth portion is completely cooled after being released from the injection mold. Most of the non-crystalline bottle mouths are designed with a reinforced bottle mouth (increasing the wall thickness of the bottle mouth) to improve the sealing performance and avoid deformation of the bottle mouth during the capping process. Usually, the ovality of the bottle mouth after filling is controlled within 0.2 mm, and the outer diameter shrinkage of the thread is less than 0.6%.

The bottle is hot oil circulating. The blow mold was heated to 120 ° C to 145 ° C. Thus, the temperature difference between the preform and the blow mold cavity is reduced to promote further crystallization. Extend the holding time of the blowing bottle so that the bottle wall and the cavity are in contact for a long time and have sufficient time to increase the crystallinity of the bottle to about 35% without destroying the transparency. The mold temperature below 100 °C has little effect on the crystallinity of the bottle body because the crystallisation of the bottle body occurs above 100 °C.

If you want to get reliable pet products, you should choose a reliable China Pet Bottle supplier. Among them, Jilian Plastic is your good choice. Welcome customers to leave us a message. I believe we can make you satisfied.

Jilian Mold Meets The Needs Of China Pet Bottle

The scope of use of Pet Preform is very extensive. We should pay attention to the correct method of use when using it, so that it can make better use of its role, and because its own advantages can be recognized by everyone, then The advantages of it will be explained in detail below, let’s take a look.

  1. Pet preform has excellent high and low temperature resistance, can be used for a long time in the temperature range of 120 °C, can withstand high temperature of 150 °C for short-term use, can withstand low temperature of -70 °C, and has a great influence on its mechanical properties at high and low temperatures. small.

2, has good mechanical properties, impact strength is 3 to 5 times that of other films, good folding resistance.

3, oil resistant, fat resistant, dilute acid, dilute alkali, resistant to most solvents.

4, gas and water vapor permeability is low, both excellent gas barrier, water, oil and odor performance.

5, high transparency, can block ultraviolet light, good gloss.

6, non-toxic, tasteless, good health and safety, can be directly used for food packaging.

The above is the advantage of China Pet Bottle. It is because of these points that it can be recognized by customers. If you have relevant needs in this regard, you can follow Jilian’s mold to understand and see, it will not let you down.

Jilian Mold China Pet Bottle Welcome Advice

In the life of PET products can be seen everywhere, easy to use, the price is not equal, there are many times you can use, and some can only be used once, let’s take a look now, how PET preforms are made!

There are many kinds of Pet Preform molds in the blister packaging industry. First, the PET preform molds used in the blister machine are: plastic aluminum mold, plastic copper mold, plastic plaster mold, and upper mold. The plastic aluminum mold is generally engraved with cnc computer, high quality, durable, suitable for mass production; plastic copper mold is essentially a thin layer of copper, which is filled with gypsum, this PET preform mold It is also suitable for mass production, and has poor heat transfer and short service life compared to aluminum molds. Gypsum PET preform mould is mainly used for small batch production and proofing. The hardness of red gypsum is large, suitable for small batch production. The hardness of yellow gypsum is small, mainly used for small sample. The upper mold is used in the production process of plastic forming, and it is necessary to apply an afterburning force from above to promote the setting, which is generally made of steel and attached with cloth. The PET preform molds used in the press are: iron knife mold, laser wood cutter mold, metal punching PET preform mold and so on. Among them, the iron knife PET preform mold is mainly used on the mechanical punching machine, and the laser knife mold is mainly used in the hydraulic punching machine. For the special shape product, the metal punching machine cutting is needed.

Choosing quality China Pet Bottle, Jilian mold is your good choice. We have accumulated rich experience in this industry. We believe that we can meet your needs very well. We also welcome customers who have needs. Come and leave us a message.

How Do China Pet Bottle Occupy A Larger Share?

The safety of Pet Preform and the flexibility of bottle-type transformation are still widely recognized by the beer industry. Following the further increase in oxygen and UV separation and heat resistance and strength of pet preforms, high-grade beer made in large quantities in pet preforms will appear in Chinese shopping malls in the past one or two years. Follow the pet bottle blank skills to improve and advance.

Adding to the needs of contemporary consumers for the convenience of beverages, PET bottles are gradually gaining market share of the remaining packaged products. More and more beverages, such as juice, non-carbonated drinks, iced tea, coffee, sports drinks, purified water, and bar disinfected milk, must maintain excellent antibacterial properties during the filling process. These beverages are increasingly using PET bottles or PP and HDPE bottles as containers.

PET bottles are less adaptable to beer filling equipment. PET bottles cannot be washed with a bottle washer. They can only be washed with high-pressure sterile water. The aseptic form in the bottle cannot be covered (unique is the bottle stored for a long time); the heat-resistant PET bottle cannot pass the pasteurizer. The requirements for the aseptic form of the packaging car are higher; the labeling method of the PET bottle is quite different from the current glass bottle labeling method, and the labeling machine needs to be changed.

Nowadays, the competition in the pet industry is fierce. Only when China Pet Bottle manufacturers continue to upgrade their product production technology, can the brand occupy a larger share in the market.

Trusted Chinese Pet Bottle Manufacturer

When designing extruded Pet Preform, if the material is high-density polyethylene or polypropylene, the PET preforms should have a rectangular or elliptical cross section. For low-density polyethylene or other flexible PET preforms, Its cross section is preferably a circle. This facilitates the extrusion of the contents from the PET preform. The PET parts used in conjunction with the PET preform blank are mainly caps and seals. The design of the PET preform blank should focus on how the PET preform can be better fitted to the lid and sealer. The bottom of the PET preform is the weak part of the mechanical properties of the PET preform. Therefore, the bottom of the PET preform is generally designed to be concave; the corners of the PET preform and the concave portion are excessively curved. In order to facilitate the stacking of PET preforms and increase the stacking stability of PET preforms, the bottom of the PET preforms should be designed with internal grooves.

When the surface of the PET preform is marked, the surface of the label should be flat. A “sash” can be designed on the surface of the PET preform to make the label accurately positioned without moving. At the time of blow molding, the portion where the parison inflates first contacts always tends to be hardened first. Therefore, the wall thickness of this part is also larger. The edge and the corner portion are the portions where the parison inflates the last contact, and the wall thickness of the portion is small. Therefore, the edges and horns of the PET preform should be designed to be rounded. Changing the surface shape of the PET preform, such as the relatively thin middle portion of the PET preform, increases the circumferential grooves or ribs on the surface of the PET preform to improve the rigidity and bending resistance of the PET preform. Longitudinal grooves or ribs eliminate the offset, sagging or deformation of PET preforms under long-term load.

The printed surface of PET preforms is the most concentrated part of consumers’ attention. The printing surface should be flat and continuous; if the PET preform contains handles, grooves, ribs, etc., care should be taken not to inconvenience the printing operation. Elliptical PET preforms have higher stiffness, but the molds are more expensive to manufacture. Therefore, in order to ensure the rigidity of the PET preform, in addition to selecting the material with high rigidity, the shape and design of the PET preform are also used to enhance the rigidity and load resistance of the PET preform.

Since most PETs have notch sensitivity, PET preforms are prone to cracks and cracks at sharp corners, roots of the mouth threads, necks, etc., so these parts should be designed to be rounded. For the transfer of rectangular PET preforms, it is necessary to support most of the load of the PET preform, so locally increasing the wall thickness at this location is also beneficial to improve the rigidity and load strength of the PET preform.

Welcome to choose Jilian mold, we are your reliable China Pet Bottle manufacturer, we will provide you with comprehensive support and protection, so you must not miss us.

Choose China Pet Bottle Is Not Disappointed

Pet Preform vary in size, shape and color. For all PET products, the bottle can be opaque, translucent or transparent.

Opaque bottles are opaque and are preferably measured using a 45°/0° reflector or a diffuse d / 8° ball reflector:

– If you are measuring opaque bottles and want to quantify the value of visual perception, then the appropriate measurement technique is to use a reflective spectrophotometer that uses a directional 45/0° reflection geometry. This is a geometry that almost matches the geometry of the color seen by the human eye.

– If you are measuring opaque bottles and want to eliminate the gloss and texture of the sample and only look at the color, then the correct technique is to use a diffuse d / 8° reflection instrument.

Translucent bottles allow light to pass through, but only diffuse, so it is not possible to clearly distinguish objects on the other side. Both the reflection and transmission measurement modes work well depending on the translucency of the sample.

– If your customer will view the path length of the sample, you can see the slight detail of the thumb or finger through PET, and then the transmission is the preferred method of measurement.

– If you don’t see the details, the reflection is preferred.

The path length is defined as the thickness of the sample from the point where the light enters the sample to the thickness of the sample.

The transparent bottle allows light to pass through with little or no interruption or distortion so that the other side of the object can be clearly seen. These bottles can only be measured using a transfer instrument.

Choose a reliable China Pet Bottle manufacturer. For example, Jilian Plastic is your good choice. Our brand has accumulated rich experience in the market and can provide you with diverse and professional advice and suggestions. Welcome Dear customers, please leave a message, I believe we will not let you down.