What is the difference between food grade PP and ordinary PP?

The raw materials are different: food grade PP is polypropylene.

with polyethylene, engineering plastics, thermoplastic elastomers.

or rubber, etc. Ordinary PP is to mix waste PP with other polymer materials to make a macroscopic uniform material.

Different properties: food-grade PP has good insulation, strong heat resistance, good corrosion resistance, stronger and less prone to yellowing. Ordinary PP products have poor toughness, dimensional stability, thermal oxygen stability and machinability, and are more likely to turn yellow, brittle, and even crack.

BOPP, BOPP, and BOPET all belong to the classification of packaging materials under PP. Compared with BOPP, BOPET and other major plastic films on the market, BOPA film has more superior performance advantages such as high barrier, high wear resistance, penetration resistance, transparency and environmental protection. Long plastic vector film is a special BOPA film (is a biaxially oriented polyamide film), by changing the specific orientation of the molecule or the combination of material levels, so as to obtain a new material product with specific strength and performance, known as the "chip" of enabling packaging materials, won the national invention patent award, with oxygen barrier, odor and fragrance preservation, straight line tearing and other properties, can be used in food, medicine, daily chemical, construction and other fields.

The film package uses the long plastic vector film as the core black technology.

It is more than 25 times stronger than ordinary packaging.

Food-grade PP and ordinary PP are two types of plastics that are more common in life, so what is the difference between food-grade PP and ordinary PP? In fact, the difference between the two is relatively easy to discern. 1. Food-grade PP will not appear harmful substances in various circumstances, while ordinary grade PP will appear harmful substances at high temperature or even at room temperature.

2. Food-grade PP is made from waste products in the process of producing food containers, while ordinary grade PP is contaminated utensils. 3. Food-grade PP can be used for food-related activities such as food storage, while ordinary grade PP is not.

Polypropylene plastic (PP) that conforms to the national standard GB National Food Safety Standard Plastic Materials and Products for Food Contact can be used in food contact.

The so-called "food grade" is just a common name for materials that meet national food safety standards.

PP and PE are both food-grade plastics. PE is commonly found in plastic wrap.

and plastic film, etc., are not resistant to high temperatures, so they cannot be put into the microwave oven for heating. PP plastic is safe, non-toxic, and resistant to high and low temperatures, and is the only plastic that can be heated in the microwave.

PP is different from PE

The surface hardness of PP is low among the five types of general-purpose plastics, only better than PE, and the crystallinity.

At higher levels, the hardness increases accordingly.

PP is a crystalline polymer, and the particles of PP will not melt if it is less than a certain temperature, unlike PE, which softens as the temperature increases during the heating process.

Polypropylene PP is food grade. Polypropylene is a relatively safe material, and the bottom of the cup is marked with the number 5. In addition to PP material, it is not recommended to use microwave ovens to heat and disinfect children's plastic drinking cups made of other materials to avoid the release of harmful substances to the human body.

In addition, drinking cups are not recommended for prolonged contact with carbonated beverages.

and milk. Compared with room temperature water, the harmful substances in the plastic are more likely to precipitate out of these liquids.

Brief introduction. materials, etc. Among them, the material should list in detail the material of all parts that may come into contact with food, including cup lid, cup body, straw, etc.

Plastic food containers, including children's plastic drinking cups, should be made of PP as much as possible. In addition, consumers should try to avoid using plastic containers or bags to put hot water, hot soup, tea and coffee, etc., and also avoid heating food in non-dedicated plastic containers in the microwave.

Many things in our daily life are plastic products, and at the bottom of these plastic products, we can see a triangular sign, and the letters written in it are the material of plastic. Not all plastics are suitable for use as food grade, or contact with hot water and boiling water, so we should pay attention when choosing. PP and PE are both common materials in food grade, so which of the two is better?

Both of these are food-grade and can be chosen. The difference between them is that in terms of density, these two materials are completely different. Comparatively speaking, the density of PP material is lower than that of PE material.

In terms of flexibility, PE materials are better than PP materials. In terms of temperature resistance, PP material is better than PE material.

PP or PE which is suitable for food grade.

Both of these can be used as food grade. The full name of PP is polypropylene, and the melting point is high. It can be used to make soy milk bottles, juice drink bottles and microwave-heated snack boxes.

Known as high-pressure polyethylene, PE has a wider range of applications, from glass bottles filled with bleach, detergent, milk to food packaging drums.

How to choose a plastic lunch box.

1. "Look": see if there is a QS logo and number on the lunch box; See if the surface of the lunch box is smooth and free of impurities.

2. "Touch": The strength of the lunch box, the inferior lunch box, the strength is generally very poor, and it will be broken if it is torn lightly.

Three "smell": whether the lunch box has a peculiar smell, and the qualified lunch box cannot smell the peculiar smell.

Many things in our daily life are plastic products, and at the bottom of these plastic products, we can see a triangular sign, and the letters written in it are the material of plastic. Not all plastics are suitable for use as food grade, or contact with hot water and boiling water, so we should pay attention when choosing. PP and PE are both common materials in food grade, so which of the two is better?

Which is better, food grade PP or food grade PE.

Both of these are food-grade and can be chosen. The difference between them is that in terms of density, these two materials are completely different. Comparatively speaking, the density of PP material is lower than that of PE material.

In terms of flexibility, PE materials are better than PP materials. In terms of temperature resistance, PP material is better than PE material.

PP or PE which is suitable for food grade.

Both of these can be used as food grade. The full name of PP is polypropylene, and the melting point is high. It can be used to make soy milk bottles, juice drink bottles and microwave-heated snack boxes.

Known as high-pressure polyethylene, PE has a wider range of applications, from glass bottles filled with bleach, detergent, milk to food packaging drums.

How to choose a plastic lunch box.

1. "Look": see if there is a QS logo and number on the lunch box; See if the surface of the lunch box is smooth and free of impurities.

2. "Touch": The strength of the lunch box, the inferior lunch box, the strength is generally very poor, and it will be broken if it is torn lightly.

Three "smell": whether the lunch box has a peculiar smell, and the qualified lunch box cannot smell the peculiar smell.

1. The raw materials are different.

1) Food grade PP: Food grade PP is a blend of polypropylene with polyethylene, engineering plastics, thermoplastic elastomers or rubber.

2) Ordinary PP: Ordinary PP is to mix waste PP with other polymer materials to prepare macroscopic homogeneous materials.

2. The performance is different.

1) Food-grade PP: Food-grade PP has good insulation, strong heat resistance, good corrosion resistance, stronger and less prone to yellowing.

2) Ordinary PP: Ordinary PP products have poor toughness, dimensional stability, thermal oxygen stability and processability, and are more likely to turn yellow, brittle, and even crack.

3. The application is different.

1) Food-grade PP: Food-grade PP is used in clothing, blankets and other fiber products, medical equipment, food, and drug packaging.

2) Ordinary PP: Ordinary PP is used in the production of automobiles, bicycles, parts, transportation pipelines, chemical containers, etc.

Hello, I am glad to answer for you, PP is food grade, PP (polypropylene) and PE (polyethylene) are commonly used plastic materials, but their properties and uses are different. In the field of food contact materials, PP and PE can be used to make food packaging bags, tableware, food containers, etc., but PP is a food-grade material, while PE is not necessarily a food-grade material. PP is a non-toxic, tasteless, high-temperature, corrosion-resistant, and wear-resistant material, which is often used to make food packaging bags, tableware, food containers, etc.

Due to its stable properties and the absence of harmful substances, it is widely regarded as a food-grade material. PE is a material with good flexibility and toughness, which is often used to make plastic bags, plastic bottles, plastic films, etc. Although PE is a non-toxic and harmless material, some additives used in the processing process may cause contamination to food, so PE is not necessarily a food-grade material.

Therefore, when choosing food packaging materials, it is recommended to choose PP materials marked with food grade to ensure the safety and hygiene of food. Hope it can help you and have a happy life!

1. Not all PP materials are food-grade, and PP materials involving the food industry are food-grade.

2. Food-grade PP material will not dissolve harmful substances under normal conditions and high temperatures, but if it is an industrial-grade PP material, harmful substances will be dissolved at room temperature or high temperature, which will be harmful to human health. Therefore, when it comes to the use of PP materials, food must be used food grade, if the use of industrial grade will cause great harm to the human body.

3. Generally speaking, PP manufacturers have food-grade specifications PP (such as PC) with FDA*, and non-food-grade specifications without FDA*, so they must understand clearly in advance. If it is a food-grade PP material, it can be made into any food plastic packaging, such as food special plastic bags, food plastic boxes, food straws, etc., which is safe and non-toxic and has good low temperature resistance and high temperature resistance.

4. At present, PP material is a plastic that can be heated in a microwave oven, and has high strength and folding resistance, and will not be damaged if it falls from a high altitude for 50,000 times to 20 times. Food-grade PP sheet is commonly used with quick-frozen dumplings and microwave heating food packaging.