Cleverly identify disposable paper cups

22 Mar 2021

  The pros and cons of disposable paper cups can be identified through the "one look, two smells and three touches" method. Look: In addition to looking at the name of the manufacturer, address, production date, etc. on the packaging, you must also look at the light. If there is blue light or impurities, it is best not to buy; Smell: whether there is a pungent smell; Touch: It feels very soft, it may be a low-quality product. Tip: When using disposable paper cups, it is best to scald them with boiling water first to let the harmful substances in the paper cups fully evaporate. Disposable tableware recycling Does the degradable tableware need not be recycled? It's not. No materials should be thrown away randomly, and sorting and recycling should be actively carried out to reduce waste of resources and environmental pollution. Even degradable products require reasonable disposal or utilization. It is nonsense to talk about product degradation speed and degradation products without s...

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Can disposable tableware be microwaved?

15 Mar 2021

  　　 Whether most disposable tableware will melt or not, it is best not to heat it. Some disposable lunch boxes can be heated. Although there are disposable lunch boxes made purely for heating, it is difficult for us to judge whether they can be heated. Therefore, I personally think that as long as there is no label on the lunch box that can be heated, it defaults to non-heating. Jelly cup manufacturers, disposable plastic tableware manufacturers, disposable lunch boxes can only be used for light meals, not for secondary use. The material of disposable lunch boxes is polystyrene, which is easy to melt in a high temperature environment. It is corroded by strong acid and alkali, is not resistant to grease, and is easy to change color after being irradiated by ultraviolet rays. 　　The safety of foamed plastic tableware is related to the pH of the food, whether it contains oil, and the temperature. According to national regulations, foamed plastic lunch boxes should be used below 70°C,...

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Why is it difficult to clean oil stains on plastic tableware?

08 Mar 2021

Why is it difficult to clean oil stains on plastic tableware? 　　 1. From the perspective of interface chemistry 　　PP (polypropylene) is a typical non-polar substance, hydrophobic; ceramic (silicate) has a strong hydrophilicity due to a large number of hydroxyl groups (hydrophilic functional groups). Most of the contaminants in tableware (such as oil stains) contain a large number of non-polar groups (long-chain aliphatic hydrocarbons). According to the principle of "similar structure and mutual solubility", water molecules with strong polarity have an affinity for ceramic materials with a large proportion of surface polar components. Strong, strong anti-pollution ability, non-polar oil pollution has a strong affinity for polypropylene, and weak anti-pollution ability. 　　 With the help of the theory of "adhesion work" proposed by Harkins (the work done by pulling apart the two-phase interface) for further explanation. The greater the work of adhesion, the stronger the solid-liquid inter...

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Consumers should pay attention to six points when buying disposable plastic tableware

01 Mar 2021

Consumers should pay attention to six points when buying disposable plastic tableware In recent years, the disposable fast food boxes on the market have shifted from foam lunch boxes to environmentally friendly lunch boxes. The original foam lunch boxes are not resistant to high temperatures and the production process causes damage to the environment. Wooden lunch boxes, degradable lunch boxes... etc. Among them, plastic has become the mainstream material for manufacturing disposable fast food boxes because of its low toxicity, high melting point, strong plasticity, easy production and relatively low cost. Such as PP plastic lunch box, PP refers to polypropylene, which has excellent mechanical and thermal properties, and is especially suitable for packaging applications for heating meals. PS polystyrene is hard and brittle, non-toxic and tasteless, especially suitable for frozen food packaging such as pastries or salads. 　　 When consumers buy and use disposable plastic tableware produc...

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How to distinguish the quality of disposable plastic tableware?

22 Feb 2021

How to distinguish the quality of disposable plastic tableware? 　　How to distinguish the quality of disposable tableware in life has become an issue of concern to everyone. 　　 1. Plastic lunch box 　　 Inferior disposable plastics are added with a large amount of industrial grade calcium carbonate, talcum powder, paraffin and other toxic and harmful materials, posing a direct threat to the health of users. 　　 Counterfeit environmentally friendly plastic lunch boxes are soft and fragile, smell pungent and choking, and are easily deformed when heated; counterfeit pulp lunch boxes have serious oil and water seepage phenomena; there is no factory name, no trademark, and no production date on the packaging boxes and lunch boxes. 　　 2. Convenient chopsticks 　　 In order to reduce costs, illegal traders use low-quality wood to make chopsticks and use sulfur fumigation and bleaching. When eating with this kind of chopsticks, the residual sulfur dioxide enters the body. 　　 Disposable plastic table...

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How to choose and identify plastic tableware

18 Feb 2021

　　How to choose and identify plastic tableware 　　 When shopping for plastic tableware, first look at whether the logo is complete, and secondly look at the product. The surface of the product should be smooth, free of stains, impurities, scratches, cracks, etc., no discoloration, fading, and smell for pungent odors. The most important thing is to look at the product identification. This standard stipulates that the product must be marked with the manufacturer’s name or trademark, material, and temperature. If the product has requirements such as heat-resistant water, not suitable for microwave ovens, and no contact with oil, it is also It should be marked, "This time the standard is clear, if it is not marked, it will be deemed usable." 　　 There are many varieties of tableware for microwave ovens, but the labels are different. Some indicate the use temperature and method of use, some only indicate the use temperature, and some do not indicate the use temperature or any instructions. Gu...

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