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Fifth processing applications in the first quarter
Release time:2018-10-13 14:17:05
Hits:1677
Question one: what is the maximum shrinkage rate of BOPE membrane?
Answer: BOPE maximum shrinkage actually achieved 60% ~ 70%, but the use of the required temperature will be higher, in order to achieve such a shrinkage ratio.
Question two: BOPE film is a very good material in the promotion of lightweight packaging, but in China's consumers as well as domestic packaging feel or stiffness, thickness and feel on the top of the consideration, will it bring promotion hindrance?
Answer: this problem is very good, and also encountered some resistance in this respect. Because BOPE has the best advantages of low temperature resistance, puncture resistance, pinhole resistance, so the initial development of this film, the first want to apply to seafood packaging. Seafood packaging is generally frozen from minus 18 to minus 25, or even minus 40. At present, the air leakage rate is relatively high, because in the process of transportation, friction between each other is easy to leak air, there is also said to be made of these sharp corners of the bag, and packed seafood after freezing is very hard, will puncture some other packaging bags. Surface, so the performance of low temperature resistance is better. But to find a lot of packing factories or food factories in Zhoushan fishing ground, as well as seafood market packing factories in Zhanjiang area, also encountered a very embarrassing problem, they want to pack seafood bags thicker, go to the supermarket to see, very thick, thick film have more than 100 um, thin film have 40um ~ 50um. So when it comes to lightweight, there's a problem with it, and customers don't like the thin film.
Question 3: Question 1: Another time ago in an experiment is to coat BOPE high barrier liquid instead of BOPA / CPE, there is a hot sealing fold, whether there is a way to stop. We are also concerned about BOPE for some time, for cost accounting and cost control is also a key. Question two: how much is the minimum haze of 50um BOPE?
Answer: BOPE coating high barrier liquid or using PVDC emulsion to improve barrier property. Coating is no problem. The key is to solve the problem of heat sealing. That is to say, heat sealing should open a relatively large distance between the temperature of the thermal sealing layer and the temperature of the skeleton layer, and the melting point of BOPE material will be around 125 C ~130 C. Therefore, the temperature should be selected with lower material and suitable for biaxial stretching. A lot has been tried, but some of the heat seal strength has been sacrificed, but if used in lightweight, this case should be successful. 50um BOPE haze can be around 5%.
Question four: what are the typical brands of BOPE special materials made in China, Mitsui and DOW?
Answer: Mitsui and Dow in BOPE special brand for reference, Dow brand 59910, Mitsui brand SP3020
Question five: Dow's progress in the industrialization of BOPE?
Answer: Dow also attaches great importance to the development of BOPE raw materials. They also attached great importance to them. In addition to domestic promotion experiments, there are also promotion experiments abroad, but generally speaking, it is still limited to those difficulties discussed above, or there is no large-scale industrialization, the biggest problem is cost, a comprehensive cost.
Question six: The wrinkle of the flat pressing hot sealing method seems to be impossible to solve unless the ultrasonic flat sealing, the edge of the hobbing seal is a little bit like, but also a little wrinkle.
Answer: heat sealing BOPE low sealing temperature, sealing edge can still be done relatively flat.
Question seven: is the feasibility of biaxial stretching between PA surface and PE?
Answer: Nylon surface and PE biaxial stretching has done a lot of research, there is a bigger difficulty, but it can also be solved, but the cost of solution is higher, BOPA raw material prices are lower, through the composite after the cost, than this co-extrusion biaxial stretching is even lower, so this piece is also It is difficult to apply. Kunshan Zhang Pu tried to use the multi-layer co extruded diaphragm for biaxial stretching.
Question eight: why is BOPE special material so expensive? Is the production cost high?
Answer: First, the quantity is small now. Second, Sinopec has a cost advantage over imported materials.
Question nine: what is the oxygen resistance of BOPE compared with that of PA? What is the ratio of PE to ordinary blown film?
Answer: The barrier of BOPE and PA is not comparable, on other properties can be compared to the United States PA, but the barrier of BOPE with CPE, IPE is not much different, slightly may improve a bit, but with PA is still not comparable, so in this respect can not replace the barrier of PA.
Question ten: what are the better BOPE raw materials and films in the world?
Answer: At present, BOPE manufacturer in the world is the earliest in Japan Mitsui Chemicals Dongselu, and later in China is Buddhist sculpture, German crown in the development and production of products in this area. The raw materials of DOW and the raw materials of Sinopec were also tested in other manufacturers.
This article is a speech by Dr. Goodall of the excellent + Longpu organization's Wechat Activity. It is a part of the first phase of the fine appeal to do the environmental friendly plastic packaging program. It is compiled from the interactive voice of Longpu + excellent Shuangla Wechat. For reference only, opinions only represent individuals. If you are involved in other matters, please contact Dacai in this season's article. (the first quarter is fifth, and the first quarter is BOPE!
Answer: BOPE maximum shrinkage actually achieved 60% ~ 70%, but the use of the required temperature will be higher, in order to achieve such a shrinkage ratio.
Question two: BOPE film is a very good material in the promotion of lightweight packaging, but in China's consumers as well as domestic packaging feel or stiffness, thickness and feel on the top of the consideration, will it bring promotion hindrance?
Answer: this problem is very good, and also encountered some resistance in this respect. Because BOPE has the best advantages of low temperature resistance, puncture resistance, pinhole resistance, so the initial development of this film, the first want to apply to seafood packaging. Seafood packaging is generally frozen from minus 18 to minus 25, or even minus 40. At present, the air leakage rate is relatively high, because in the process of transportation, friction between each other is easy to leak air, there is also said to be made of these sharp corners of the bag, and packed seafood after freezing is very hard, will puncture some other packaging bags. Surface, so the performance of low temperature resistance is better. But to find a lot of packing factories or food factories in Zhoushan fishing ground, as well as seafood market packing factories in Zhanjiang area, also encountered a very embarrassing problem, they want to pack seafood bags thicker, go to the supermarket to see, very thick, thick film have more than 100 um, thin film have 40um ~ 50um. So when it comes to lightweight, there's a problem with it, and customers don't like the thin film.
Question 3: Question 1: Another time ago in an experiment is to coat BOPE high barrier liquid instead of BOPA / CPE, there is a hot sealing fold, whether there is a way to stop. We are also concerned about BOPE for some time, for cost accounting and cost control is also a key. Question two: how much is the minimum haze of 50um BOPE?
Answer: BOPE coating high barrier liquid or using PVDC emulsion to improve barrier property. Coating is no problem. The key is to solve the problem of heat sealing. That is to say, heat sealing should open a relatively large distance between the temperature of the thermal sealing layer and the temperature of the skeleton layer, and the melting point of BOPE material will be around 125 C ~130 C. Therefore, the temperature should be selected with lower material and suitable for biaxial stretching. A lot has been tried, but some of the heat seal strength has been sacrificed, but if used in lightweight, this case should be successful. 50um BOPE haze can be around 5%.
Question four: what are the typical brands of BOPE special materials made in China, Mitsui and DOW?
Answer: Mitsui and Dow in BOPE special brand for reference, Dow brand 59910, Mitsui brand SP3020
Question five: Dow's progress in the industrialization of BOPE?
Answer: Dow also attaches great importance to the development of BOPE raw materials. They also attached great importance to them. In addition to domestic promotion experiments, there are also promotion experiments abroad, but generally speaking, it is still limited to those difficulties discussed above, or there is no large-scale industrialization, the biggest problem is cost, a comprehensive cost.
Question six: The wrinkle of the flat pressing hot sealing method seems to be impossible to solve unless the ultrasonic flat sealing, the edge of the hobbing seal is a little bit like, but also a little wrinkle.
Answer: heat sealing BOPE low sealing temperature, sealing edge can still be done relatively flat.
Question seven: is the feasibility of biaxial stretching between PA surface and PE?
Answer: Nylon surface and PE biaxial stretching has done a lot of research, there is a bigger difficulty, but it can also be solved, but the cost of solution is higher, BOPA raw material prices are lower, through the composite after the cost, than this co-extrusion biaxial stretching is even lower, so this piece is also It is difficult to apply. Kunshan Zhang Pu tried to use the multi-layer co extruded diaphragm for biaxial stretching.
Question eight: why is BOPE special material so expensive? Is the production cost high?
Answer: First, the quantity is small now. Second, Sinopec has a cost advantage over imported materials.
Question nine: what is the oxygen resistance of BOPE compared with that of PA? What is the ratio of PE to ordinary blown film?
Answer: The barrier of BOPE and PA is not comparable, on other properties can be compared to the United States PA, but the barrier of BOPE with CPE, IPE is not much different, slightly may improve a bit, but with PA is still not comparable, so in this respect can not replace the barrier of PA.
Question ten: what are the better BOPE raw materials and films in the world?
Answer: At present, BOPE manufacturer in the world is the earliest in Japan Mitsui Chemicals Dongselu, and later in China is Buddhist sculpture, German crown in the development and production of products in this area. The raw materials of DOW and the raw materials of Sinopec were also tested in other manufacturers.
This article is a speech by Dr. Goodall of the excellent + Longpu organization's Wechat Activity. It is a part of the first phase of the fine appeal to do the environmental friendly plastic packaging program. It is compiled from the interactive voice of Longpu + excellent Shuangla Wechat. For reference only, opinions only represent individuals. If you are involved in other matters, please contact Dacai in this season's article. (the first quarter is fifth, and the first quarter is BOPE!
