Degradable tableware refers to tableware that can undergo biochemical reactions under the action of microorganisms (bacteria, molds, algae) and enzymes in the natural environment, causing mildew in appearance to change in internal quality, and finally forms carbon dioxide and water. There are two types of materials used for compostable food packaging and degradable tableware: one is made of natural materials, such as paper products, straw, starch, etc., which are degradable and are also called environmentally friendly products; the other is plastic as the main component, made by adding starch, photosensitizer and other substances.
Ⅰ. Appearance of the finished disposable biodegradable tableware
1. Normal color, no peculiar smell.
2. The surface is smooth and clean, with uniform texture, no scratches, no wrinkles, peeling, no cracks and perforations.
3. The surface is free of oil, dust, mildew and other foreign matter.
4. The edges are smooth and regular. The cover with the cover is convenient and flat, and the elastic cover should not be buckled.
Ⅱ. Technical requirements for disposable biodegradable tableware
Disposable biodegradable tableware must be made of raw materials that are non-toxic, harmless, clean and non-polluting, and comply with national food hygiene and environmental protection regulations and standards. The following raw materials, additives, coatings and chemical preparations shall not be used to make or process disposable biodegradable tableware:
1. Natural materials and their rough processed products without decontamination treatment.
2. Ineffective deterioration, mildew or contamination.
3. The content of harmful substances does not meet the hygienic standards.
4. Recycle recycled materials.
5. Fluorescent whitening agent.
The green packaging of disposable biodegradable tableware produced by biodegradable food packaging companies should meet three points: one is easy to recycle, the other is easy to dispose of, and the third is easy to absorb, that is, it is easy to be integrated by the natural environment, but even degradable tableware is not a short-term solution. of. Many degradable products claim that the degradation time is three months to six months, but this is actually determined in a standard laboratory environment. In the natural environment, the degradation is affected by various factors such as temperature and humidity. For example, if you put the lunch box in the Where there is no water, it is also difficult to degrade. Under natural conditions, the degraded products take at least one year to degrade.
Ⅲ. The identification of disposable biodegradable tableware
Experts suggest that degradable tableware can be identified by several methods of "seeing, smelling, and tearing":
1. At first glance, first check whether there is a quality mark and number on the lunch box; secondly, check whether the surface of the lunch box is smooth and clean, with or without impurities or black spots. Generally speaking, transparent plastic lunch boxes are made of pure polypropylene, which has a relatively high safety factor; brightly colored lunch boxes may use waste plastics, so the darker the color, the less safe it is.
2. The second touch is to touch the strength of the lunch box. The lunch box produced by using recycled waste or adding a large amount of industrial grade calcium carbonate and talc powder is generally poor in strength, and it will break when it is gently torn.
3. The third smell is to smell the lunch box for peculiar smell. The qualified lunch box cannot smell the smell. The characteristics of the "black lunch box" can be summed up: soft when hand squeezed, cracked when lightly torn, pungent smell, easy to leak when exposed to heat, paraffin mark when folded by hand, and sink in water when torn. As long as you remember the above jingle, you can easily distinguish whether the disposable biodegradable tableware is qualified.