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List of contents for this article:
- 1、Buy a pc or pp for a drinking cup
- 2、The plastic lid of the glass cup, if hot water touches the lid, will it produce toxins?
- 3、If the plastic lid of the glass comes into contact with hot water, will toxic substances be produced
- 4、What types of ordinary daily water cups are there
Buy a pc or pp for a drinking cup
1. When choosing the material of the water cup, PC (polycarbonate) is generally considered to be better than PS (polystyrene). PP (polypropylene) is a non-toxic plastic suitable for food contact. PC materials are also non-toxic and have a series of excellent characteristics, including electrical insulation, extensibility, size stability and chemical corrosion resistance. PC materials are also flame retardant, non-toxic and colorable, meeting a wide range of needs from daily necessities to advanced industrial products.
2. Choosing a PP water cup is safer and more practical, especially when using it for children or filling hot water. Although PC materials have good transparency and strength, bisphenol A (BPA) may precipitate out, and long-term exposure may interfere with the endocrine system. PP material does not contain BPA, has better high temperature resistance (usually up to 120°C or more), and microwave heating is safer. It is a better choice for daily drinking cups.
3. The core difference between the three water cups of PC, PP and PET lies in their material characteristics and application scenarios. Among them, PP water cups have the strongest safety and adaptability. PC water cups have the risk of high temperature release. PET is more suitable for disposable room temperature packaging.### Differences in material composition The basic raw materials of the three water cups are completely different: PC water cup: made of polycarbonate and a polymer containing carbonate groups in its molecular chain.
The plastic lid of the glass cup, if hot water touches the lid, will it produce toxins?
Most of the plastic covers for regular brands of glasses are made of food grade PP, which will not release harmful substances even if they come into contact with boiling water. It is recommended to check the number in the triangular recycling sign at the bottom of the cup lid. The number 5 or with a PP logo is the safest. Use scenarios should be distinguished: If the plastic cover is obviously deformed or whitish cracked, or has a pungent smell when opened, it may be inferior materials. In this case, substances such as plasticizers may precipitate out at high temperatures, and it is not advisable to continue to use them.
Whether toxins are released mainly depends on the material of the plastic cover. Common food-grade plastics (such as PP and Tritan) are generally safe when exposed to hot water for a short period of time, but poor quality or recycled plastics may release harmful substances. The safety of plastic products is closely related to their material. The plastic covers encountered in daily use can be divided into two categories: products with regular brand materials usually meet national standards, while plastic covers for roadside stalls or three-no products are at higher risk.
Qualified plastic covers for normal use generally do not release toxins when contacted with hot water, but attention should be paid to the material identification and use conditions. The key depends on the type of material. The plastic lid used with regular glasses is mostly made of polypropylene (PP) or Tritan. These two materials themselves do not contain bisphenol A (BPA), have a heat-resistant temperature of more than 100℃, and no harmful substances will be separated out when they are normally loaded in hot water.
Qualified plastic cup lids for daily use will not produce toxicity when contacted with hot water for short periods of time. For such common life scenarios, material safety is mainly related to the type of plastic. At present, food contact grade plastic products are generally made of polypropylene (PP) or Tritan. These materials can withstand high temperatures of 100 ° C under national standards. For example, the PP material used in most infant bottles has been verified for safety in boiling water disinfection scenarios.
It is basically safe for short-term use, but it is necessary to distinguish between plastic materials. Most of the plastic lids of daily glasses are made of food grade polypropylene (PP, marked with the number 5). They withstand high temperatures of about 120 ° C and will not release toxicity when exposed to boiling water for a short period of time. If the lid is made of polycarbonate (PC, labeled with the number 7) and is not marked with "BPA Free", high temperatures may release bisphenol A, so it is recommended to replace it.
If the plastic lid of the glass comes into contact with hot water, will toxic substances be produced
Whether the plastic cover will release harmful substances mainly depends on the material type, temperature resistance level and processing technology. Take common plastic covers for water cups as an example: Materials affect safety: Most plastic covers used with glasses will use PP (polypropylene, food-grade No. 5 plastic), and their heat-resistant temperature can reach 120-140 ° C. They will not release harmful substances when exposed to hot water. However, if a PC (polycarbonate) cover is used, continuous exposure to high temperatures may cause bisphenol A to precipitate (most common in older products).
Most of the plastic covers for regular brands of glasses are made of food grade PP, which will not release harmful substances even if they come into contact with boiling water. It is recommended to check the number in the triangular recycling sign at the bottom of the cup lid. The number 5 or with a PP logo is the safest. Use scenarios should be distinguished: If the plastic cover is obviously deformed or whitish cracked, or has a pungent smell when opened, it may be inferior materials. In this case, substances such as plasticizers may precipitate out at high temperatures, and it is not advisable to continue to use them.
Food grade plastic cup lids used in daily use generally do not release toxic substances when they come into contact with hot water. At present, most of the lid materials for glasses on the market are high-temperature resistant materials such as PP (polypropylene) and Tritan (copolyester). These materials have stable chemical properties at boiling water temperature (100℃) and have passed the national food contact material safety certification.
Don't worry too much, but pay attention to plastic materials and temperature limitations. Whether plastic covers release harmful substances due to contact with hot water mainly depends on two points: material type and heat-resistant temperature. The glass itself is safe, but the lid is mostly made of food grade PP (polypropylene), Tritan and other materials. Some cheap products may use non-food grade plastics.
What types of ordinary daily water cups are there
Common daily water cups are mainly divided into five categories: plastic cups, glass cups, ceramic cups, stainless steel cups, and vacuum cups. The mainstream materials of plastic cups are PP polypropylene and PC polycarbonate. PP material is safe, non-toxic and resistant to high temperatures and can hold hot water;PC material has good transparency, but some products may release bisphenol A. This kind of cup is affordable, light and easy to carry, has a wide variety of styles and colors, and is suitable for daily use at home or when going out.
Ordinary water cups that are common in daily life are mainly divided into four major categories: plastic, glass, ceramics, and stainless steel. Most of the plastic water cups are made of PP polypropylene and PC polycarbonate. The overall weight is light, resistant to falling and not easy to break, and the price is relatively close to the people. It is suitable for going to school, carry it out while going to work or exercising. However, it should be noted that some inferior plastic cups may release harmful substances at high temperatures. It is recommended to choose products labeled as food grade.
There are mainly these common styles of cups for daily drinking water, each with different adaptation scenarios and advantages and disadvantages: the glass is made of inorganic silicate materials and does not contain organic chemicals. It can completely retain the original flavor of water, and the material is transparent. Observe the cleaning situation. Safe and resistant to high temperatures, it can not only brew hot drinks directly, but also be suitable for cold water. It is a safe choice for daily drinking water.
There are mainly these types of small cups suitable for daily carry-on. They are suitable for different use scenarios and needs. The 316 stainless steel accompanying cup comes with a one-button lock-proof design. It has excellent heat insulation and cold preservation effect. It can achieve 12 hours of heat preservation and 24 hours of cold preservation. Cold, whether it is hot coffee or iced American style, you can maintain the right drinking temperature. The cup body is slim and suitable for most car card slots. It is suitable for both office commuting and daily travel. It is very decent for business and daily use.
The portable model is suitable for short commutes that only require a small amount of water or carrying coffee. For example, the Greylock Lumos Smart Portable Cup has a capacity of 240ml and can be held in one hand. It will not take up too much space when placed in the bag. It is paired with 316L stainless steel and German ceramic coated liner, the large-diameter design is easy to clean, and it is suitable for daily loading hot water and coffee.
A water cup is a vessel used to drink water, drink tea, etc. in life. It is usually composed of a cup and a lid, and the materials are plastic, glass, ceramics, and stainless steel. The glass cup is extremely transparent, resistant to wear, smooth surface, easy to clean, and healthy and hygienic, making it the best choice for domestic water. Ceramic cups are safe and healthy, have low price, are not easy to get hot, and have various shapes. They are the type of cups we like to choose at home or in the office.
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