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.

Chinese Pet Bottle With Excellent Service

Pet Preform are not only widely used in packaging carbonated beverages, drinking water, juices, enzymes and tea beverages. They are widely used in beverage packaging and are widely used in food, chemical, pharmaceutical packaging and many other fields. PET is used in a wide range of applications in the packaging industry, whether it is packaging film, coil or beer bottles. But when these materials are discarded, they are faced with the problem of how to deal with them. Each year, China produces tens of billions of PET bottles. It is estimated that by 2005, more than 500,000 tons of PET will be used in the manufacture of PET bottles every year.
Polyethylene terephthalate is the main type of thermoplastic polyester. The English name is Polythylene terephthalate (PET or PETP (hereinafter referred to as PET), commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, together with PBT, collectively referred to as a thermoplastic polyester, or a saturated polyester. PET is a milky white or light yellow highly crystalline polymer with a smooth and shiny surface. It has good creep resistance, fatigue resistance, friction resistance and dimensional stability, low abrasion and high hardness, and has large toughness in thermoplastic PET. It has good electrical insulation performance and is less affected by temperature, but has poor corona resistance. Non-toxic, weather-resistant, chemical-resistant, good water absorption, weak acid and organic solvents.
Choose China Pet Bottle, choose Jilian mold, we are your trustworthy choice, we will provide you with reliable quality products and excellent service, so please contact us if you have any needs, I believe we will not Let you down.

China Pet Bottle Manufacturers Choose Jilian Mold

Multi-layer blow molding process
Multi-layer blow molding is the use of several plastics to make a multi-layer composite Pet Preform in a suitable manner and then formed by a general blow molding process.
Multi-layer blow molding is mainly to meet the higher demand for plastic packaging containers such as barrier properties, flame retardancy, weather resistance, heat insulation, internal and external dichroism, etc. for cosmetics, pharmaceuticals and foods.
For example, a double-layer blow molded bottle with an outer layer of PVC and an inner layer of PE, the outer layer of PVC provides good barrier properties, rigidity, flame retardancy and weather resistance, while the inner layer PE makes the bottle non-toxic to the package. Excellent chemical resistance.
Typical applications for multilayer blow molded articles are the packaging of milk, natural juices, tea, ketchup, carbonated soft drinks (CSD) and beer.
Multi-layer extrusion blow molding refers to the plastic preforms of different kinds of plastics after being plasticized by a plurality of extruders, and then formed into a billet layer which is layered and tightly bonded together by a special machine head, and then fed into a blow mold. A technique for inflating a multi-layer hollow article.
This blow molding technology is developed on the basis of single-layer extrusion blow molding. The molding process is almost the same as that of single-layer extrusion blow molding, except that the molding equipment uses multiple extruders to plasticize different types of plastics. The machine head used should be able to extrude the tubular structure of the multi-layer structure, and the three-layer tube blank extrusion equipment

Injection stretch blow molding process
Stretch blow molding: a blow molding process by biaxially oriented stretching, which is divided into a one-step injection drawing process and a two-step injection drawing process.
One-step method: hot pet preform method
Pet preforms, stretching, and blow molding are done in one machine. Pet preforms are semi-finished products in the production process.
The combination of devices is:
1 consists of an extruder and a blow molding machine;
2 consists of an injection machine and a blow molding machine.
Two-step method: cold pet preform method
After the pet preform is cooled, the cold pet preform is reheated for stretching and blow molding. Including injection of preforms for stretch-blow molding of pet preforms; extrusion of pet preforms by directional stretch blow molding.
There are currently four combinations of stretch blow molding:
1-step extrusion stretch blow molding for processing PVC;
2 two-step extrusion stretch blow molding for processing PVC phase PP;
3 one-step injection stretch blow molding for processing PET and RPVC;
4 two-step injection stretch blow molding for processing PET.
Blow molding materials: PAN, PET, PVC, PP, etc.
01. Injecting pet preforms into a directional stretch blow molding process
The bottomed pet preform is first injection molded and continuously sent to a heating furnace (infrared or electric heating) by a conveyor belt (or a rotating belt), heated to a stretching temperature, and then incorporated into a blow mold by means of a stretching rod. Stretched and then inflated. It is necessary to control the appropriate stretching temperature, and it can be molded by multi-cavity (2-8), and the production capacity can reach 250-2400 per hour (capacity is 340-1800g beverage bottle).
02. Extrusion pet preform blank oriented blow molding process
The plastic is first extruded into a tube and cut into a length to serve as a cold billet. Put it into the heating furnace and heat it to the stretching temperature, then take the heated pet preform from the furnace to the molding table through the conveying device, so that one end of the pet preform forms a bottle neck and a thread, and the pet preform is along the axis. After pulling 1.0-1.3 times, the blow mold was closed for inflation molding.
Another method is to take out the heated pet preform from the furnace, stretch it in the axial direction of the tube in the stretching device, and send it to the blow mold. The mold inflates the stretched pet preform and inflates it. Forming and trimming waste edges. The production capacity of this method can reach 3,000 bottles per hour and the capacity is one liter.
Applications: PET beverage bottles, PP bottles, PC bottles

Choosing a professional China Pet Bottle manufacturer, Jilian Plastic is your good choice. Whether it is in the design, production or follow-up service, you will get the most satisfaction.

The Color Design Of China Pet Bottle

Seizing the consumer’s consumer psychology can open up a very good market. The long-term development of Pet Preform manufacturers recognizes that the color of pet preforms has a great influence on their own development. People at different stages do not choose the color of PET bottles. In the same way, I have such personal feelings, and my favorite color is chosen to buy.

The psychological effects of color have a certain impact. As our age changes, children like very bright colors. Red and yellow are the preferences of ordinary babies. The favorite color of boys is green, red, yellow, white, and black. The favorite colors of girls are green, red, white, yellow, and black. Adults are rich in life experience and cultural knowledge. In addition to the associations from life, there are more cultural factors. According to the color psychology of the consumer groups of different age groups, the PET bottle design can be targeted. According to the different perceptions of color by people of different ages, we have designed such PET bottles to provide us with a wider market.

The color design of China Pet Bottle has a great impact on their own development, and seizes market dynamics to win a wider space for their own development.