New development of the application of the hottest

2022-08-09
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New development of the use of polyester bottles and chips

pick up a PET bottle for coke or mineral water packaging, observe it carefully, and turn it around in your hand to see its outline. First of all, it is shameful that there seems to be no change in polyester bottles over the years

the problem comes. After the profit peaked in 1995, many major carbonated beverage manufacturers changed the packaging to polyester bottles. What progress has been made in polyester bottle chips since then? However, in 1997, the market situation of polyester bottle chips was poor, and the return of manufacturers fell to a very dangerous low level. Since then, the polyester bottle chip market has recovered steadily, from explosive growth to a mature plastic variety

this maturity is manifested in the following two aspects:

1 Use polyester bottle chips in more application fields

2 Develop and improve the production technology of polyester bottle chips so that they can enter the market that is easy to be ignored, including sports drinks, nutrition and health drinks market, and beer packaging market

the carbonated beverage and bottled water markets have not subsided, and new technological improvements have also occurred in these fields, increasing the interest of bottle blowing plants and consumers

plastic cans

polyester bottle chip experts agree that if you want to penetrate the new market, you must improve productivity, change or improve production technology. Barnaby Wallace, global purchasing director of Coca Cola, said that only through technological improvement can we create a stable growth in the demand for polyester bottle chips through improving economy and performance

as Coca Cola has increased its market share in non carbonated beverages, the company is committed to improving the performance of polyester bottle chips and other packaging forms to compete with polyester bottles. Coca Cola is very concerned about the growth of demand for polyester bottles and tablets. Mr. Wallace pointed out that technological improvements including polyester bottle chips: better impermeability, toughness, UV resistance, acetaldehyde protection and recyclability

Coca Cola plans to adopt 10 oz and 12 oz polyester carbonated beverage bottles, but the polyester bottles with small volume, carbon dioxide insulation performance and low cost are still a challenge

at present, there is a 12 ounce plastic can, which not only looks like a pop-up can, but also has the same packaging, stacking and transportation as a pop-up can. The tank body adopts polyester bottle pieces, while the top cover uses standard 202 aluminum, and the opening method is the same as that of a pop can. This kind of can like packaging is transparent, so those drinks with bright colors are easier to attract the attention of consumers when they are displayed

new trends in drinking water packaging

in addition to the carbonated beverage market, the relatively quiet drinking water market also needs polyester bottles with small volume. The following two exciting trends have emerged in the field of drinking water packaging

1 Nantze springs recently launched an 8.5 oz drinking water bottle that can withstand pasteurization without affecting the color of the bottle and the taste of the water. This kind of drinking water is specially developed for children

2. Suntory drinking water group and constar jointly developed a polyester bottle for vending machines, which has a small outline, a high shoulder and a volume of 11.5 ounces. The drinking water packaged in this bottle can be sold on standard vending machines

in addition to carbonated beverages and drinking water, other food packaging is also badly in need of conversion to polyester, and continuous improvement of technology is the key to achieve this goal

nutrition and health drink packaging

one of the largest markets to be developed for polyester bottles is nutrition and health drinks. As a part of the functional food with 950 million dollars in the global market, Jinan new era assaying Instrument Co., Ltd. welcomes you. Many testing instruments for health drinks are highly localized, with annual sales of up to 7billion dollars

at present, consumers over the age of 50 obviously consider health factors in their purchasing behavior, which shows that the health drink market will inevitably expand further. Nutritional and health drinks include yogurt, vitamin fortified fruit juice and drinking water, seasoning or carbonated dairy products, etc

recently developed polyester bottle tablets for packaging these products mainly emphasize the protection of their nutritional value, color and taste. For example, ultraviolet rays can damage vitamins, taste and color, which is the same reason that they can damage human skin. The technology of improving air tightness or using other means to extend the shelf life will cause the product to be exposed to ultraviolet rays for a long time, which will affect the internal quality of nutritional fortified drinks

the bottle tablets currently used in the packaging of nutritional and health drinks provide necessary UV absorbers to protect the products from UV rays. Through the combination with comonomers and the optimization of processing technology, the existing polyester bottle chips can withstand different injection temperature conditions. Ultraviolet absorbent can be added to the polymer melt in the polymerization stage, and this additive will not precipitate or migrate, so that bottle blowing plants can produce polyester bottles with stable UV resistance. These UV resistant polymers will not affect the cycle time of existing injection molding

Holliday, Amcor polyester packaging, constar, Graham Packaging, Pechiney plastics, Schott hicotec, SIG corpoplast, Owens Illinois and PBM plastics are currently researching and developing materials with better protection and air tightness

other technologies under study include equipment that can inject air tight materials into the bottle embryo, which seems to be a mechanical "hypodermic needle", which is provided by Owens Illinois plastic group

polyester beer bottle

another growth market that the polyester industry has been waiting for is beer packaging. Relevant research shows that beer bottles account for 42% of all packaging materials in the global packaged beverage market. However, the beer packaged in polyester bottles accounts for less than 1% of the total. Therefore, the market of polyester bottles for beer packaging is still large

in order to extend the shelf life, beer is usually pasteurized. Pipeline pasteurization is the most effective, because the production line has the highest temperature and the lowest energy consumption. Moreover, this process has high reliability and will not affect the quality and cost-effectiveness of products. More than 80% of beer is pasteurized by pipeline, but it is very challenging for polyester bottles to pass pasteurization

pasteurization has a thermal effect on products and their packaging. Generally, the thermal deformation temperature of polyester bottle chips is 62 ℃. In addition, pasteurization is the foaming effect of carbon dioxide, and polyester bottle chips begin to be unstable when the temperature is close to 60 ℃. In order to solve this instability problem, standard polyester bottle chips must be able to withstand temperature and pressure at 65 ℃

one solution is to improve the crystallinity of materials. Injection molding machines that can shape polyester at higher temperatures have come out, and then there is a clean water washing process to quickly cool the mold. However, the bottle embryo made by this process is heavy, and the processing speed is slow, and the output is low. There are special requirements for polyester bottle chips for injection molding, and the shoulder of the bottle body should be specially designed. However, this thick walled bottle can withstand pasteurization at 65 ℃. In order to reduce carbon dioxide bubbles, more space is needed in the bottle when bottling, and there is enough space for doom talks to release

the reason why the demand for polyester beer bottles is unpleasant is that compared with traditional cans and glass, polyester bottles cost more. In addition, consumers think that the beer in the glass bottle tastes better, and they think that glass is the preferred beer packaging material. Polyester has to compete with cans with lower canning and distribution costs

in the United States, polyester bottled beer has become a product consumed in specific places, such as sports venues or concerts. Consumer recognition is the key to developing the retail beer market and creating profitable demand

there must be some constraints in the polyester market, such as the economic feasibility of digestible polyester bottle chips, improved insulation protection performance and low-cost sterilization packaging, which are also growing areas. However, all new polyester bottle chip technologies will rely on a major driving force, that is, consumer recognition and convenience

recently, two kinds of airtight coating processes have been introduced, one of which is the plasma coating system matched with the bottle blowing machine, in which the servo motor is loaded, the high-precision is then started to control the injection degree displacement measuring mechanism, and the high-precision load sensor forms a closed-loop control system. This system can apply a coating with the same thickness outside the polyester bottle, and the low surface temperature during coating helps to reduce the thermal damage to the bottle body. The other is the open chemical combustion vapor deposition (CCVD) process. Different from the traditional film deposition process, this process does not need expensive vacuum box and curing oven

source: China Packaging

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