Some Major advantages and applications of PET bottles

Polyethylene terephthalate or PET is an imperative packaging material used in different industries. As the demand has increased for different types of PET bottles in the market, the reputed blow moulds manufacturer in India like vishalpet.com has ventured into its production on a large scale.

28mm pco preforms

are made with the help of pet preform injection moulds and injection molding machines. The popularity of polyethylene terephthalate bottles in different industrial packaging solutions has been huge. So, it is quite evident that demand for these bottles in the market has also taken the path up the ladder. Some of the reasons for their popularity in the market are as follows:

Efficiency during shipping:-
One of biggest reasons for polyethylene terephthalate bottles being used as packaging solutions in various industries is the efficiency achieved during shipping. As PET bottles are easy to stack. They provide clean lines, which are easy to adjust in different packaging containers.

No breakage:-
Compared to any other material polyethylene terephthalate bottles are quite sturdy in nature. There is no breakage in these bottles during shipping or packaging, which ensures the non-contaminated nature of the stored material.
No climatic impact:-
It has been seen during manufacturing and production of PET Planet that polyethylene terephthalate material can easily bear extreme temperatures. This one of the main reasons for these bottles being chosen as a packaging material in different industries. These bottles provide protection to the stored material against extreme climatic conditions.

Mineral Water preforms

have actually captured the packaging market wholly. Innovative and improved ways of making these bottles are being researched by many companies to increase their durability and stability.

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PET Preforms for mineral water bottling industries

PET Preforms for

Mineral Water preforms

bottling industries. No other company in Kuwait offers you so extensive a range. No wonder that the end product is carefully finished, smooth, with flash-free necks, tailless and uniformed wall thickness with high clarity and low 'AA' level. The

Husky Pet preform

are so designed that while blowing, the material gets distributed evenly, thereby making absolutely sturdy bottles. GPI has full-fledged laboratory ensuring strict tests at every stage. The designing department provides newer, effective and creative solutions, catering to every requirement of the customers.

The GPI Preform Advantage:-

• Wide range of preform sizes:
• Lower weight and with better physical properties
• Consistent blowing results
• High intrinsic viscosity levels
• Low acetaldehyde levels
• High clarity
• High gloss
• Comprehensive after sales support
• Continuous and rapid development of new products to fulfill customer requirements

Wide Range of Jar and Bottle Preforms

Product Details:-

• More gloss & transparency
• Lower Acetaldehyde (AA) levels
• Lower Drop in I. V.
• Higher output rates during blow molding Machines
• Zero rejection rates during blow molding
• Higher strength containers from similar perform weight
• More unitorm Distribution of material, allowing the use of a lighter weight perform for the same container volume

Our preform can use for Packaging of:-

• Mineral Water
• Juices
• Liquor
• Soda
• Sparkling Drinks
• Pharma Products
• Pickles and Murraba
• Squashes
• FMCG Products and many-many more other applications

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Manufacturing of Plastic Bottles (PET)

Introduction to PET Bottles:- 

 Plastic Bottles nowadays is something that is in high demand, is it mainly because of its durability. Majority of people around the world use it in a daily basis. Containing innumerous uses, plastic bottles or plastic to be specific, must be one of the greatest discoveries in the recent centuries.

About Polyethylene terephthalate used for Bottling:-
Polyethylene terephthalate is not made is not made in a single process. It is made by the reaction of two chemicals known as Purified terephthalic acid (PAT) and ethylene glycol (EG).
These two chemicals form Polyethylene terephthalate along with other types of plastic, used in variety of applications such as engineering, nylon production, etc.
Below are some Properties of Polyethylene terephthalate:

•         Density: 1.38~1.40g/mm3
•         Melting Temperature: 254-256°C
•         Crystallinity: >=45%
•         Glass Tempurature: 82°C

PET is a long chained molecule with the repeating unit displayed above, resin, a bluish white substance, is made from poly condensation of terephthalic acid and ethylene glycol. Resin manufacturers supply PET in the form of small pellets, each weigh about 0.05 grams.Being transparent, PET can reach a tensile strength of about 1/3~1/2 of steel's.
The number of PET repeating units per chain, used in the bottle industry to make plastic bottles is about 100 to 155, usually labeled in terms of resin IV.

Main Advantages of PET:-

• Pure – PET does not involve, by reacting with the food or beverage which is kept within the container. Therefore, PET complies with international food contact regulations.
• Lightweight – 10 times, lighter than a glass pack, PET bottles, hence, reduces shipping costs by 30%. If a glass and PET bottle having the same size is compared in volume it can store, PET will come in first, as its wall is thinner.
• Crystal Clear – The product looks clean and healthy and in physical good shape. These attract attention and increases the sales of the products contained within it.
• No Leakage – Due to the absence of a weld line in the bottom the Mineral Water bottle preform leakage does not occur.
• Design Flexibility – Can be designed in all shapes and sizes, designs and colors.
• Recyclable – As it is one single material, PET bottles can be washed and crushed into flakes and remolded into shape. It has other uses after it is recycled such as for strapping, making carpets, etc.

Production of PET bottles
Usually PET bottles are manufactured using 2 different methods.
These are :-

• One-Step "hot perform" method.
• Two-Step "cold perform" method.

Step-one "hot perform" method
This method is just one step, from PET granule to finished bottles, all the processors are done in one integrated machine. That is from the injection mold of the preform to the removal of the preform from the injection cavity, and to stretch blow the preform to a bottle all in one machine, while the temperature remain constantly high for the whole process as injection molding and blow molding, the material should in an elastic form. This method saves a lot of energy as the material only has to be heated only once, that is when it is injected to the cavity to produce the preform. The One-Step method is commonly used in small or medium PET production companies.

Step-one "hot perform" method:-
This method is just one step, from PET granule to finished bottles, all the processors are done in one integrated machine. That is from the injection mold of the preform to the removal of the preform from the injection cavity, and to stretch blow the preform to a bottle all in one machine, while the temperature remain constantly high for the whole process as injection molding and blow molding, the material should in an elastic form. This method saves a lot of energy as the material only has to be heated only once, that is when it is injected to the cavity to produce the preform. The One-Step method is commonly used in small or medium PET production companies.

Step-two"cold perform" method:-
This method has 2 distinct machines to perform the injecting and blow moldings. The preform is injected into shape on the first machine, and then the preform is reheated as the it isn't brought directly to the blow molding machine and blown on the second machine. 

This method is not very efficient as the heat lost is considered as a loss of energy. But this machines are fully automated.This method is used in most medium to large scale PET production companies.This machine is 200% more efficient than the one-step machine.

Possible Defects while production of PET Bottles:-
One of the Major defects in the production of PET Bottles is the production of Acetaldehyde.
This compound also called as AA, is the taste of an acidic taste in most citrus fruits. This taste in the bottle can ruin the taste of the drinks, especially if its water as the taste of pure water isn't strong enough to disguise the taste of AA, unlike the sweet flavors. If the presence of the AA is noticed the quality of the product literally, goes down the drain. 

AA is produced along with the PET when the temperature of the material is higher than 260°C, this temperature is reached inside the injection molding of the preforms, therefore is the process is not maintained correctly, AA is produced along with the PET preform.
Decreasing the melt temperature and the residence time and help reduce the production of AA.
Other forms of defects are briefly mentioned below.

• OH- or COOH- end groups doesn't becomes non-reactive.
• Amount of poly-functional macromolecules increases.
• Hydroxide and peroxide groups build up at the surface of the PET and etc.

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How to Perform Testing of Glass and PET bottles?

Bottle packings are popular in every industry, from carrying liquids to powder and solids. They are fit to contain every form of product. Plastic and glass are two materials by far which are perfectly keeping the contents safe. You must have also seen metal bottles, like deodorant, insect killer spray, cleaning agents, etc. Metal jugs are fit for conveying chemicals, however they are inclined to consumption. This is the reason metal jugs are from time to time utilized generally. Likewise, they contribute a considerable measure in expanding the cost of the item. Glass and plastic being practical is favored decision.

Testing of PET bottles:-

A decent jug ought to have great adjusting and security, reliable divider thickness, no air bubbles or different distortions. To check every one of these parameters there is an extensive variety of testing instruments. Be that as it may, before all that, we have to check the preforms for consummate shape. Preforms are blown formed to make full estimated bottles. At some point, these preforms have abandons which additionally get go to conclusive item i.e. bottle. These imperfections may prompt item disappointment. To keep away from that, polariscope is utilized. It's an optical gadget with two polaroid focal points and an episode light. The

PET preform PET preform india

enables the light to pass totally with no reflection or refraction. On the off chance that there is any imperfection, the light would get refract doubly and make birefringence impact of light.

The preforms are tested at two angles, 45° and 90°.

Just imperfection free preforms are further blow shaped into bottles. A progression of tests is performed on these containers. This aides in surveying the working conduct of the jugs in genuine conditions.

Testing of Glass bottles:-

Some of the testing procedures are as same as Pet bottle testing. However, glass bottles don’t undergo bursting tests etc. If the quality manager wants to do the same, there are specially designed machines with closed cavities, to avoid any mishap when bottle bursts.

Mineral Water bottle preform are again check for any defects and air bubbles using polariscope strain viewer. In glass bottles also, it works with the same principle. But the strain viewer for glass has special features to analyse strain on glass.

Apart from strain, the bottles are tested for their balancing and wall thickness. All thickness gauges, like Magna Mike 8600 allows the operator to check the thickness without cutting the bottle into sections. The balancing property of the bottle can be analysed by checking the depth of the base with respect to height of the bottle. Base clearance tester accurate measures the depth of the base and circumference.

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PET a Very Crucial Raw Material For Packaging

PET has been in use from quite a long time, but recent years showed a great surge in the demand worldwide. Easy availability of the PET material has great emphasis on packaging due to high-quality production with reduced costs. According to a forecast from Smithers Pira, there will be a sustained annual growth of 4.6 percent year-on-year basis in next five years. Other than established economies, transitional and emerging ones become prominent players in the marketplace.

Sustainable growth would take the demand for

PET preform supplier

to new heights
Increasing importance on attractive packaging and personal hygiene are major reasons behind the increase. A large number of  for wines, pharmaceuticals, and dairy products are needed due to their reliability and sturdiness.

Market reports say that the worldwide market will show a gigantic increase to $60 Million from the current figures of 48 Million with an annual growth rate of 4.6 percent approximate. With a sustained growth, it will open new horizons in the coming five years.

Reasons of such an overwhelming performance:-

Experts say that the trends were indicating a fantastic future in 2010 when PET bottles gained worldwide popularity due to easy handling, durability, convenience, and cost-effectiveness. Being incredibly lightweight they are ideal for on-the-go utilization. There were various reasons behind it:
1. Due to the popularity of bottled water, ready-to-drink beverages, soft drinks, and juices there was a need for good quality durable packaging material PET emerged as the best alternate.
2. Household cleaning products and pharmaceuticals replaced conventional packaging material with PET. It is a cost-effective and convenient alternative.

As per data, around 12.5 million tonnes of total 15.4 million tonnes were contributed by PET bottles. Bottles water contributed for 5.45 million tonnes and 5.17 million tonnes by carbonated water. Experts say that the timid performance by the latter is triggered by increasing awareness about harmful effects of sweetened drinks.

Among other important sectors in the packaging industry, non-food packaging demonstrated a phenomenal increase of 4.4 percent and thermoforming packaging recorded 4.7 percent.  Thus, the fastest growth has been shown by packaged water.

Future seems to be further promising:-

Well-known brand owners and packaging experts are quite confident that the future is further promising for this industry. With new technology, it is possible reducing weight of Pet preform

further. It will result in further cost-effective products. Since PET bottles share more than 80 percent of the overall sales, it is going to be a great impact for the business. Experts predict that the bottled water is going to rock in next five years with a consistent volume growth of 6% whereas pharmaceutical and other drinks are expected to touch the 5% mark.

Who will be the market drivers?

It is sure that the developing markets will steal the show irrespective of geography. In last five years, Asia Pacific has left Western Europe and North America far behind. In fact, it has become the largest regional market in the aforesaid period. Global recession did not affect this region as badly as North America or Western Europe. Hence, the total share was 31% by Asia Pacific in last five years. Future trends indicate that it will show the same increase.

PET Consumption in Asia and other continents:-

PET is a versatile resin used for a wide variety of applications like food packaging, bottling, films nd many more. PBT is another type of thermoplastic that is useful in electronic goods, electrical appliances, automotive parts and consumer products. There has been a phenomenal increase in the demand of PBT and PET in last few years. Estimates show that in2014 to 2019, there will be a steady growth of more than 7 percent worldwide. These figures are based on the overall consumption of both types of resins.  These calculations are based on Five Forces model of Porter that takes into account the current industrial trends, value chain analysis, and the top players that contribute to the consumption.

Among various contributing factors for the significant increase in the consumption of PET and PBT, some are prominent ones. Increasing the use of industrial plastic in place of metal, surge in the use of electrical and electronic applications, emerging economies, are to name a few. Replacement of synthetic PBT with bio-based PBT and reduction in halogen content are also other important drivers. Population growth, urbanization increase, rise in consumption of FMCG are equally responsible for the growth. There was stagnancy in economies of North America and Europe, but increase in Asian economy shifted the focus from developed countries to developing countries.

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