First, plastic bottles:
1, PC bottle
PC plastic bottle with high permeability is a kind of high permeability and beautiful, that is, the bottle body is very clean and transparent, especially resistant to falling. Usually we can't break it. But when choosing a bottle, we should not only look outside, but also pay attention to the inside. Bottles made of this material contain a chemical substance-bisphenol A (BPA) which is seriously harmful to human health.
Earlier studies in the European Union showed that bottles containing bisphenol A can induce precocious puberty, increase the risk of breast cancer and prostate cancer, and may lead to endocrine disorders, which are related to infertility, asthma, heart disease and neurodevelopmental disorders.
From March 2, 20 1 1, it is forbidden to produce baby bottles containing the chemical bisphenol A(BPA). Many manufacturers have already stopped using BPA, so PC bottles containing BPA have basically withdrawn from the market.
2. Polypropylene bottle
PP bottles are made of PP (polypropylene) and contain no carcinogen bisphenol A. So plastic bottles on the market now use PP instead of PC.
Features: PP bottle has high chemical stability, good hygienic performance and high heat resistance. Microwave tableware generally uses PP plastic products, which are cheap. However, the life of PP bottle is short, the long-term high temperature resistance time is short, and the bottle without PC material is transparent and beautiful.
Transparency: the transparency of high-quality PP bottles is not very high, and there is a slight whitish feeling, which is determined by the nature of PP material. There are no impurities, obvious patterns and flash on the bottle body, and the scale on the bottle body is very clear and standard, and the color is relatively uniform. Transparent "PP" bottles can be made of antireflection or PC.
Smell: propylene molecules in PP plastic have a certain smell. The smell in the newly bought PP bottle is the smell of PP material itself, which is not conducive to the baby's olfactory development.
3. PES bottle
PES bottle has excellent heat resistance, but the residual milk scale is not easy to clean and easy to breed bacteria.
Polyethersulfone, also known as polyethersulfone, does not contain bisphenol A, but contains bisphenol S. Previous studies on the effects of bisphenol A and bisphenol S on cell function show that these two chemicals have similar effects on embryo development. This means that BPS is not more secure than BPA. Researchers at the University of Calgary in Canada have provided evidence that BPS and BPA can cause brain development changes in zebrafish, leading to ADHD.
4.PPSU bottle
The PPSU bottle is made of the current PPSU (polyphenylene sulfone) and does not contain bisphenol A. ..
Features: PPSU plastic bottles are widely used in the market at present. Compared with PC plastic bottles, it is not so bright, but a little yellow, slightly soft, light and not fragile. It also contains no BPA.
However, after repeated high-temperature cleaning and disinfection, it will gradually age, that is, we often say plasticization, and the aging release of plastic will peel off, which is easy for the baby to inhale and damage the baby's health.
Tip: Four kinds of plastic bottles are big PK.
Now, let's compare heat resistance, corrosion resistance, transparency and cleanliness:
Heat resistance: PPSU & gt；; PES = PC> Parcel Post
Corrosion resistance: PPSU & gt；; PES & gtPC & gt Parcel Post
Transparency: PC & gtPES & gtPPSU & gt；; Parcel Post
Cleanliness: PPSU = PES>；; PC> Parcel Post
Plastic bottles will gradually age (plasticize) after repeated high-temperature cleaning and disinfection, and the plastic released by aging will peel off, which is indistinguishable from our naked eyes. Babies are easily inhaled into the body, which is harmful to their health. Only glass bottles will not plasticize. It is recommended to use glass bottles within 18 months.
In fact, glass bottles are divided into fine white glass bottles and high borosilicate glass bottles.
1, pure white glass bottle
Does not contain bisphenol A, and will not be plasticized due to high temperature. However, its tolerance to high and low temperatures is weak. Someone tested it. Disinfect at the temperature difference of 100 degrees, and the bottle may burst when hot and cold alternate.
It also has a big disadvantage that it contains lead. If the baby uses a white bottle filled with glass lead for a long time, it will easily lead to chronic poisoning and damage health. Therefore, mothers must see clearly whether there are glass bottles without glass and lead, and don't be deceived by pure white glass bottles.
2. High borosilicate glass bottles
High borosilicate glass bottle, also known as lead-free high borosilicate glass bottle, also known as green glass, is widely praised in the market at present. It will not plasticize due to high temperature. When it meets acidic or alkaline substances, it will not release harmful substances, and it does not contain bisphenol A. Compared with pure white glass bottles, high borosilicate glass bottles do not contain lead and have a more advanced appearance. Resistant to high and low temperature difference, can withstand alternating cold and hot at -30℃ ~ 300℃ instantly without bursting.
In addition to material classification, bottles can also be divided into four categories according to their functions:
1, ordinary bottle
Advantages: the nipple has no air return hole and is cheap.
Disadvantages: without any flatulence prevention function, the baby is prone to flatulence.
2. Return air bottle
Advantages: The nipple has air holes, and some have double air holes.
Disadvantages: Breathing back too fast, the baby is easy to inhale too much air and produce flatulence or abdominal pain. The air return hole is blocked, the air return is too slow, and it is difficult for the baby to drink milk. Some babies fall asleep after drinking too much, which makes mothers have to insist on breastfeeding.
3, catheter anti-flatulence bottle
Advantages: the bottle body is equipped with a catheter-type anti-flatulence device, which has good anti-flatulence effect.
Disadvantages: serious milk leakage, complicated anti-flatulence device, troublesome cleaning, easy to breed bacteria and inhale air.
4. Functional anti-inflation gas bottle
Advantages: Multi-channel anti-inflation bottle with anti-inflation valve can adjust the air pressure inside and outside the balance bottle at any time. The valve of the anti-flatulence device is integrated, which is easy to clean and has good anti-flatulence effect. The nipple does not have any air holes and does not leak milk, effectively preventing the baby from burping, spitting milk and abdominal pain.
Disadvantages: Glass products need to be used with care.
How to choose a safe bottle?
In fact, after understanding the material and function comparison of so many bottles, it is not very useful. Because we can't identify the safety of bottles with naked eyes at all, how can we buy safe bottles?
Only by testing standards to judge is the safest way to distinguish!
At present, the most stringent testing standard for infant drinking utensils in the world is the European EN 14350 testing standard, because the European EN 14350 testing not only requires testing whether the baby bottle contains glass lead, but also requires the outer packaging of the baby bottle to meet environmental protection standards. As long as a raw material does not meet the requirements of environmental protection, it will not pass the European standard test.
At present, French BV testing and certification is a direct testing and certification institution authorized by the European Union, which adopts the testing standard of European EN 14350. Through BV testing and certification, it shows that the products are directly recognized by the European Union, the United States and other countries without inspection, and it is also a passport to the world.
The baby is very fragile. Mothers should choose a safe and reliable functional anti-flatulence bottle with high borosilicate glass, and be sure to read the test report of the bottle carefully. Only by choosing products that pass the European standard test or have BV test certificate can the baby's healthy growth be more guaranteed.