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Glass bottles packaging difference and use
by：Lisson
2020-11-11
Glass bottle, can repeat use, carrying the inconvenience, but couldn't have a clear cross contamination, the prohibition fraud phenomenon, people dare not rest assured.
plastic bottles, relative to the said of the glass, and the permeability coefficient of oxygen and carbon monoxide is bigger, it can lead to chemical reaction taking place between packing objects and packages, be packaging by oxidation and deterioration in the taste, and the aging of plastic products also affect the appearance quality, beautiful and practical, and pollute the environment.
with the continuous application of new materials and new technology, has been in the PC, PET, PEN, PET and PEN mixed materials, as well as represented by the PETG and other new plastic plastic. They each have advantages and disadvantages?
PC advantage is above 120 ℃ high temperature, mechanical strength, but the price is expensive and carbamate resistance is poor, has been gradually out of the beer packaging. It is reported that now there are improved type of PC is back to the market.
PEN has good heat resistance and gas barrier property, resistance to ultraviolet radiation, high temperature can withstand pasteurization and soaking temperature, its service life can be more than 6 months, light weight, but the cost is high, the scope limits the use of PEN.
so the PET, but due to its high temperature resistance, so it is suitable for cold sterilization beer, because beer using membrane filtration sterilization technology, not pasteurized or high temperature instantaneous sterilization. But we can not cut off the gas well penetration, not only low carbon content, also easy to make beer cyanide metamorphism, its application is very limited. But the largest PET is the earliest development, production and the most widely used polyester products.
PET can be easily obtained by rapid cooling method was basically amorphous, high transparent, easy to stretch of PET products, so as the packaging materials, PET can be made into two-way stretch packaging film, and can be obtained by the product state bottle preform high strength, high transparent stretch blow molding bottle, can also direct extrusion or blowing into the stretch hollow container.
PET film with a transparent, oil resistant, incense and reliable health and use performance (such as temperature range High temperature steaming and refrigerated packing) , especially tensile SuPing molding, which applied the most were dozens of ml to 2 liters of small bottle, also has a capacity of 30 liters large bottles.
in the beverage packaging, its application is the most successful carbonated soft drinks ( CSD） , such as coke, Sprite and so on, the CSD has about a third of the total PET bottle with bottle. In 1998 alone, China CSD PET bottles of 57 in the packaging. 4%. As early as in 1995, Japan's condiments are has more than 30000 tons, accounting for 13% of the total consumption of PET bottles. Figures show that Japanese sales of PET bottles from 2, 2000. 200 million up to 2. 500 million, five years from 1995 to 2000, PET bottle rose from 15% to 36%.
Germany adopted widely applicable to beverages, beer products of PET bottle blow molding technology, the instantaneous output up to 1200 bottles/die. And has good environmental protection and energy saving features, production energy consumption was only 41% and 64% of the glass bottle, if further recycling, it also can reduce energy consumption by around 50%. If the base of China's beer production more than 20 million tons in 2000, around 25 billion to 30 billion beer bottles only ( Including recycled) , even partly replace, by 2005, demand of PET bottle in China will reach 600000 to 650000 tons, unlimited business opportunities.
the PET to poor heat resistance and resistance, limits its applications in hot canned and requiring high air tightness.
to solve the problem of heat resistance is poor, people have been developed by studying three kinds of practical heat resistant polyester bottle; Hot new bottles, can reach 85 ℃ filling requirements; Golden urn PET/PEN, PEN, high heat resistance in common injection blowing device can be obtained to meet the requirements of above 80 ℃ hot pot bottles, if treated by heat styling and hot filling temperature can reach 90 ℃ or more; And heat resistant aromatic esters made multilayer composite bottle, in order to improve the heat resistance.
to solve the problem of poor resistance capability of the current methods mainly have three kinds: one is the multilayer composite, give priority to with PET, join the PEN of other air tightness good materials for 3 or 5 layer bottles; The second is the use of special processing methods, such as in PET bottle, or the outer coating epoxy blocking layer, or plasma treatment; Three is to use other barrier property resin molding, PEN or PEN copolymerization or blending with PET as raw material, can not only improve the Yin gas bottle, heat resistance and improve the bottles, you can also alkaline cleaning disinfection, repeated use, thereby reducing costs, because the former two methods have poor transparency and recycling special problems such as difficult and complex process, equipment required, and although increased air tightness, but heat resistance is poor, can only adapt to the occasion of aseptic filling.
the French west to le packaging company introduced a PEN blend material, is 15% of the PEN is mixed with 85% of the PET, again after the special craft processing, such as obtaining amorphous carbon from high temperature plasma, and trace amounts of amorphous carbon in the manufacturing of plastic utensils materials added, and greatly improve the index of its performance, almost reached the level of the glass and metal ware, and the packaging cost performance is better than that of glass bottles. New technology can make bottles of oxygen resistance increased 29 times and 6 times blocking performance improvement.
plastic bottles, relative to the said of the glass, and the permeability coefficient of oxygen and carbon monoxide is bigger, it can lead to chemical reaction taking place between packing objects and packages, be packaging by oxidation and deterioration in the taste, and the aging of plastic products also affect the appearance quality, beautiful and practical, and pollute the environment.
with the continuous application of new materials and new technology, has been in the PC, PET, PEN, PET and PEN mixed materials, as well as represented by the PETG and other new plastic plastic. They each have advantages and disadvantages?
PC advantage is above 120 ℃ high temperature, mechanical strength, but the price is expensive and carbamate resistance is poor, has been gradually out of the beer packaging. It is reported that now there are improved type of PC is back to the market.
PEN has good heat resistance and gas barrier property, resistance to ultraviolet radiation, high temperature can withstand pasteurization and soaking temperature, its service life can be more than 6 months, light weight, but the cost is high, the scope limits the use of PEN.
so the PET, but due to its high temperature resistance, so it is suitable for cold sterilization beer, because beer using membrane filtration sterilization technology, not pasteurized or high temperature instantaneous sterilization. But we can not cut off the gas well penetration, not only low carbon content, also easy to make beer cyanide metamorphism, its application is very limited. But the largest PET is the earliest development, production and the most widely used polyester products.
PET can be easily obtained by rapid cooling method was basically amorphous, high transparent, easy to stretch of PET products, so as the packaging materials, PET can be made into two-way stretch packaging film, and can be obtained by the product state bottle preform high strength, high transparent stretch blow molding bottle, can also direct extrusion or blowing into the stretch hollow container.
PET film with a transparent, oil resistant, incense and reliable health and use performance (such as temperature range High temperature steaming and refrigerated packing) , especially tensile SuPing molding, which applied the most were dozens of ml to 2 liters of small bottle, also has a capacity of 30 liters large bottles.
in the beverage packaging, its application is the most successful carbonated soft drinks ( CSD） , such as coke, Sprite and so on, the CSD has about a third of the total PET bottle with bottle. In 1998 alone, China CSD PET bottles of 57 in the packaging. 4%. As early as in 1995, Japan's condiments are has more than 30000 tons, accounting for 13% of the total consumption of PET bottles. Figures show that Japanese sales of PET bottles from 2, 2000. 200 million up to 2. 500 million, five years from 1995 to 2000, PET bottle rose from 15% to 36%.
Germany adopted widely applicable to beverages, beer products of PET bottle blow molding technology, the instantaneous output up to 1200 bottles/die. And has good environmental protection and energy saving features, production energy consumption was only 41% and 64% of the glass bottle, if further recycling, it also can reduce energy consumption by around 50%. If the base of China's beer production more than 20 million tons in 2000, around 25 billion to 30 billion beer bottles only ( Including recycled) , even partly replace, by 2005, demand of PET bottle in China will reach 600000 to 650000 tons, unlimited business opportunities.
the PET to poor heat resistance and resistance, limits its applications in hot canned and requiring high air tightness.
to solve the problem of heat resistance is poor, people have been developed by studying three kinds of practical heat resistant polyester bottle; Hot new bottles, can reach 85 ℃ filling requirements; Golden urn PET/PEN, PEN, high heat resistance in common injection blowing device can be obtained to meet the requirements of above 80 ℃ hot pot bottles, if treated by heat styling and hot filling temperature can reach 90 ℃ or more; And heat resistant aromatic esters made multilayer composite bottle, in order to improve the heat resistance.
to solve the problem of poor resistance capability of the current methods mainly have three kinds: one is the multilayer composite, give priority to with PET, join the PEN of other air tightness good materials for 3 or 5 layer bottles; The second is the use of special processing methods, such as in PET bottle, or the outer coating epoxy blocking layer, or plasma treatment; Three is to use other barrier property resin molding, PEN or PEN copolymerization or blending with PET as raw material, can not only improve the Yin gas bottle, heat resistance and improve the bottles, you can also alkaline cleaning disinfection, repeated use, thereby reducing costs, because the former two methods have poor transparency and recycling special problems such as difficult and complex process, equipment required, and although increased air tightness, but heat resistance is poor, can only adapt to the occasion of aseptic filling.
the French west to le packaging company introduced a PEN blend material, is 15% of the PEN is mixed with 85% of the PET, again after the special craft processing, such as obtaining amorphous carbon from high temperature plasma, and trace amounts of amorphous carbon in the manufacturing of plastic utensils materials added, and greatly improve the index of its performance, almost reached the level of the glass and metal ware, and the packaging cost performance is better than that of glass bottles. New technology can make bottles of oxygen resistance increased 29 times and 6 times blocking performance improvement.
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