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Talking About The Production Process Of Pet Preforms

Posted by nicolepreform on Sep 4, 2019 in News

Food and beverage Pet Preform should have sufficient rigidity and beautiful appearance to attract the user’s eye in the appearance, ensuring that consumers can have numerous choices and usability in use. Food and beverage PET bottles The most common shapes are round, square, oval and so on. From the point of view of use, they each have their own advantages and disadvantages. Round PET bottles have a high stiffness but are not aesthetically pleasing. The square PET bottle has a beautiful appearance, but it is not easy to control the uniform thickness of the PET bottle during molding.
Food and beverage PET bottles should be well controlled and designed in production, produced and produced according to certain production and processing techniques, and have good performance and functions, which can fully display important value in the industry.
1) When designing extruded PET bottles for food and beverage, if the material is high density polyethylene or polypropylene, the cross section of the PET bottle should be rectangular or elliptical, for low density polyethylene or other flexible PET bottles. The cross section is preferably a circle. This facilitates the extrusion of the contents from the PET bottle. The PET parts used in conjunction with the PET bottle mouth are mainly caps and seals. The design of the PET bottle mouth should be focused on; how to make the PET bottle mouth better fit the lid and sealer with the bottom of the PET bottle, which is the weak part of the mechanical properties of the PET bottle. Therefore, the bottom of the food and beverage PET bottle is generally designed to be concave; the corners of the PET bottle and the concave portion are excessively curved. In order to facilitate the stacking of PET bottles and increase the stacking stability of PET bottles, the inner bottom of the PET bottles should be designed with internal grooves.
2) When the surface of the food and beverage 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 where the parison inflates the last contact, 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.
3) Since most PETs have notch sensitivity, PET bottles 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 a rectangular PET bottle, it is necessary to support most of the load of the PET bottle, so locally increasing the wall thickness at that place is also advantageous for improving the rigidity and load resistance of the PET bottle.
4) The printed surface of food and beverage PET bottles is the most concentrated part of consumers’ attention. The printing surface should be flat and continuous; if the PET bottle contains handles, grooves, ribs and other structures, care should be taken not to cause inconvenience to the printing operation. Elliptical PET bottles have higher stiffness, but the manufacturing cost of the mold is higher. Therefore, in order to ensure the rigidity of the PET bottle, in addition to selecting the material with high rigidity, the shape and design of the PET bottle are also used to enhance the rigidity and load resistance of the food and beverage PET bottle.
As pet products are more and more popular and popular among consumers in the market, China Pet Bottle manufacturers are also increasing, and various manufacturers are constantly innovating products to consumers. Can be more satisfied.

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Pet Preform Processing Attention

Posted by nicolepreform on Aug 28, 2019 in News

The processing technology of Pet Preform is actually quite strict. Regular manufacturers actually have their own strict processing methods. There are many problems in PET preform processing. The following Shun’s plastic industry will introduce you specifically.

First, when designing extruded PET, if the material is high-density polyethylene or polypropylene, the PET preform should have a rectangular or elliptical cross section. For low-density polyethylene or other flexible materials, the cross-section is horizontal. The cross section is preferably circular because it facilitates the extrusion of the contents from the PET preform. PET parts used in conjunction with PET preforms are mainly caps and sealers. The design of the bottle mouth should be considered, so that the PET preform can be better matched with the cover and the sealer. The bottom of the PET preform is PET. The weak part of the mechanical properties of the preform. Therefore, the bottom of the PET preform is generally designed to be concave. The corners and recesses of the PET preforms are all 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.

Second, when using the label on the surface of the PET preform, try to make the surface of the label 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.

Third, 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 and higher mold manufacturing costs. 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.

Fourth, 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.

The above is the problem that the preform needs to pay attention to during processing. Jilian Plastic has many years of experience in the production of pet bottles in China. We can provide you with diversified protection. Want to get a quality and reliable Chinese pet bottle? Then come and leave us a message.

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The Identification Of Pet Preforms

Posted by nicolepreform on Aug 23, 2019 in News

Pet Preform are easy to carry, not afraid of falling, have acid and alkali resistance, are easy to produce, and are also good for recycling.

The main raw material for making beverage bottles is PET, which is harmless. It has no adverse effect on the human body when it is used for containing soda cola beverages. However, since PET bottles still contain a small amount of ethylene monomer, if long-term storage of fat-soluble organic substances such as wine and vinegar, A chemical reaction occurred. Long-term consumption of food contaminated with ethylene can cause dizziness, headache, nausea, loss of appetite, memory loss, etc., and severe cases may also lead to anemia.

In addition, the bottle is filled with wine, vinegar, etc., and the bottle is aged by oxygen, ultraviolet rays, etc., releasing a large amount of ethylene monomer, so that the wine, vinegar, etc. stored in the bottle for a long time deteriorate and taste.

The identification of China Pet Bottle can be done by scientific methods such as infrared spectrometer, paramagnetic resonance, and X-ray, but it can also be identified by a relatively simple method.

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The Trend Of Pet Preforms Low Carbonization

Posted by nicolepreform on Aug 14, 2019 in News

The energy saving, pet emission reduction and low-carbon economy of Pet Preform have become a long-term development trend, and at the same time, a number of new industries with rapid development have been driven. Such as high-speed trains, rail transit, etc., and these industries have also put forward new requirements for the pet preform industry. As the basic equipment of the manufacturing industry, the pet preform industry is known as the “mother of industry”. The trend of the pet preform manufacturing industry and its entire industrial chain affects every “nerve” of the manufacturing industry.

At present, domestic and foreign countries encourage pet bottle preform enterprises to develop green production through a series of policies, the purpose of which is “energy saving, emission reduction and material saving”. In response to this requirement, the mold industry first replaces heavier quality materials with light materials, such as magnesium and aluminum alloys, plastic steel, and high-strength, high-stiffness materials. At the same time, it also actively purchases advanced low-energy environmental protection processing equipment and waste gas and waste treatment equipment to achieve green production.

It can be seen from the development direction of the above-mentioned pet preform industry that paying attention to the low-carbon problem of the pet preform manufacturing industry and its entire industrial chain, in addition to the processing of raw materials, production equipment and exhaust gas, it is also necessary to realize the pet preforms in a large scale and to a large extent. The production of the manufacturing industry is intelligent. Because the intelligent industry is both a low-carbon economy and advanced technology, in line with the current overall economic development direction.

Choosing Jilian Plastic Mould, we are a safe and reliable supplier of China Pet Bottle. After years of development in the market and accumulated rich experience, we can provide you with more comprehensive protection.

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Jilian Mold China Pet Bottle Is Worthy Of Your Trust

Posted by nicolepreform on Aug 8, 2019 in News

Very people are very strange to the word Pet Preform. Although this product is not common in us, it can bring us great benefits, such as the plastic bottles we usually see and so on. A product is closely related. It can be said that there is no such product. Many of the equipments we use today cannot be used normally. What are the functional characteristics of this product?

The functional features of the products produced by pet preform manufacturers are that the material is tough, but the toughness is good. Therefore, the manufacturing process is more and more convenient, and it can be molded better. The customer’s needs for style can also be well arrived. Contentment. The second feature is that the surface is smooth, looks very beautiful, and is an environmentally friendly product, and will not release some toxic gases.

The functional feature is that the material is soft and the function of high temperature resistance is good. Therefore, the requirements for processing are not very high, so it is natural and convenient for the processing workshop, so that there is some cost. The decline, and the natural value of the products we send to them is also quite large.

Many people may not know what it is. It is originally an intermediate of processed products. It has been said that the process of blow molding can cause some products that are usually used in our daily life, such as plastic bottles. What is the use? We should be familiar with this issue.

The use of pet preforms is still very important. The use of one can be used as an intermediate. After being made, it can be better viewed. If there are unpleasant places, it can be easily corrected, and it will not become a waste after finishing. The use of the second is that the manufacturing is relatively easy to control, and it is very good to send the mold to us, so that the effect is better for the manufacture of the seat. The use of three is that the raw material of this product is usually compared with simple processing, so the use for us is to reduce the cost of work, of course, it can also reduce the workload, in the mold, the natural can be better invested in the inspection of the manufacturing side, and Can reduce some mistakes, so as to better protect the benefits of our seat.

Choosing Jilian Plastics, we are a reliable and professional supplier of China Pet Bottle products, we can provide you with professional product design solutions to ensure that you can get the products you want.

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The Change Of Pet Preforms In Color

Posted by nicolepreform on Jul 31, 2019 in News

With the continuous introduction of new products, the beverage industry is also increasingly packed. Most of them are in the form of Pet Preform, followed by glass bottles and paper, and less cans.

In the supermarkets, on the shelves of the beverage area, the beverage bottles are usually printed with more vivid colors as the outer packaging labels of the products. Brilliant colors can attract the attention of consumers, but too many colors collide together, it will cause aesthetic fatigue.

When using pet preforms for packaging, the same should be avoided. Since warm colors and bright colors are more, can beverage bottle companies change their packaging skills? Switching to cool colors or darker packaging can highlight products and attract attention.

In the case of the same brand discrimination, the outer packaging of the beverage bottle determines the purchasing power of the consumer. At present, beverage bottle packaging is constantly improving the aesthetics and humanity. Many China Pet Bottle manufacturers also determine the color of the bottle according to the taste of the beverage. The chance of a mistaken purchase is reduced.

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Professional China Pet Bottle Manufacturer - Jilian Mold

Posted by nicolepreform on Jul 25, 2019 in News

The Pet Preform used in our daily life are not very good in heat resistance. This problem is very troublesome for us. With the selection of Jilian molds, we are able to provide a variety of high quality heat resistant 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.

As a professional China Pet Bottle manufacturer, we provide our customers with high-quality heat-resistant Chinese pet bottle products, so that every customer who chooses us can get a satisfactory product and service.

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Choose Jilian Mold Chinese Pet Bottle Does Not Regret

Posted by nicolepreform on Jul 18, 2019 in News

The blowing of the Pet Preform is carried out between the glass transition temperature and the crystallization temperature, and is generally controlled between 90 and 120 degrees. In this interval, PET is in a highly elastic state, which is quickly blow molded, cooled and shaped to become a transparent bottle. In the one-step method, this temperature is determined by the length of the cooling time in the injection molding process, so it is necessary to connect the two injection-boiler positions.

In the blow molding process: stretching - one blowing - two blowing, the three movements are very short, but must be well coordinated, especially the first two steps determine the overall distribution of the material, the quality of the blowing. Therefore, it should be adjusted: stretching start timing, stretching speed, pre-blowing start and end timing, pre-blowing pressure, pre-blowing flow, etc., if possible, it is best to control the overall temperature distribution of the preform, bottle The temperature gradient of the inner and outer walls of the blank.

In the process of rapid blow molding and cooling, induced stress is generated in the bottle wall. For a carbonated beverage bottle, it is resistant to internal pressure and is beneficial, but for hot-filled bottles it is necessary to ensure that it is fully released above the glass transition temperature.

Choosing Jilian mold, we produce professional China Pet Bottle products, and also provide you with perfect after-sales service. I believe that choosing us is a choice you will not regret.

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How To Improve The Problem Of Pet Preform Production

Posted by nicolepreform on Jul 11, 2019 in News

Pet Preform is a kind of plastic product processed by injection molding. It has impermeability and insulation. It is usually used for the storage and transportation of some important liquid objects. It is common to have a blood pumping body in a hospital.

PET preforms are the main raw material for many of our blow molded bottles. In fact, the quality of PET preforms will affect the production of blow molding products to a large extent. So what are the problems with PET preform production and how can it be improved? The professional manufacturer of PET preforms is briefly described below:

First of all, some of the current preform manufacturers are on the one hand to enhance the price advantage of products, and on the other hand to improve their own profits. Therefore, doping the secondary material in the preform production process has become the unspoken rule of many merchants. Although the secondary material is inexpensive, there are various problems. These secondary materials are often difficult to meet the standards in terms of hygiene and flow into food, beverage and other markets, which will seriously affect the safety of food packaging.

Secondary preforms also have an impact on the stability of the blow molded product. Therefore, strengthening supervision and avoiding the secondary material Liurun preform market is a key point to be solved. Secondly, the preforming is easier to standardize than the blow molding bottles of different shapes, and the development of standards is conducive to the development of the market. Accelerating more detailed standards development and implementing bottle label related issues is something we need to work hard for some time to come. For pet preforms, it’s actually about the whole of plastic bottles, so we should pay more attention to them.

Jilian Plastic Mould is a professional China Pet Bottle design and manufacturing expert. We have accumulated rich experience in the market for many years and can become a good partner on your production road.

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Pet Preforms Are Widely Used In Life

Posted by nicolepreform on Jul 3, 2019 in News

The most common processes used to produce Pet Preform are as follows:

Injection molding: The most common method of making pet preforms. Injection molding can be carried out with many PET materials, which is ideal for producing a large number of identical objects. This process also allows the manufacture of foamed parts. Automotive parts, containers, covers, toys, medical equipment, tools, etc. are all manufactured by this method.
Extrusion: A mass production process in which the raw material PET melts and forms a continuous profile. In this way, some modifications can be made to the foam part. Extrusion produces a wide range of PET components such as window frames, tubes, pipes and fittings, films and sheets, fences, and sunlit parts.
Blow molding: A common industrial process for forming hollow PET parts. One of the articles manufactured by this method is a bottle and a recipient widely used in our daily life.
Rotational Molding: Also known as a rotational molding process, a method of molding a hollow PET object by placing finely divided particles in a hollow mold that is rotated about two axes, exposing it to heat and then cooling. Products that can be manufactured using rotomoulding include tanks, furniture, road signs and bollards, aircraft parts, toys, playground slides, roofs…
The properties of PET make it very useful in our daily lives, so we can find almost all PET parts in automotive parts, building materials, hygiene, food packaging, toys, homes…
Looking for a professional China Pet Bottle design and manufacturer? Jilian Plastic is your good choice. With our accumulated experience in the market for many years, I believe that it will not let you down.

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