In daily life, plastic packaging bags, plastic lunch boxes, and plastic straws are frequently used. These plastic products are mostly used in the catering industry and are closely related to people's health. So how to accurately identify and use qualified plastic packaging bags, plastic lunch boxes, and plastic straws? Here are some tips on how to select and accurately use these plastic products.


Qualified plastic packaging bags

1、 Look: Check if there is intact product and company information printed on the plastic bag. It is necessary to label plastic bags for food with the words "for food use". You can see if the plastic is clean when facing the light. A qualified plastic bag is very clean and free of impurities, while defective plastic bags may show dirty spots and impurities. The thickness of one side of the plastic bag needs to be above 0.025mm.

2、 Smell: Qualified plastic bags have no taste, while defective plastic bags may have an unpleasant odor.

3、 Hands on: Damaged plastic bags have poor strength and can easily break with just a poke. Qualified plastic bags have high strength and will not be easily punctured. When vigorously shaking the plastic bag with your hands, it is declared that the qualified plastic bag is making a crisp sound, while the low-key and muffled sound is the unqualified plastic bag. Touching the surface with your hands is crucial for lubrication. A well lubricated plastic bag is considered qualified, while a sticky or astringent one is considered unqualified. Dip a cotton swab with edible salad oil and rub the colored area inside the plastic bag multiple times. The qualified plastic bag will not fade, while the color of the unqualified plastic bag will fall off.

Qualified plastic lunch box

1、 Check the sealing performance. Usually, food boxes should be sealed in plastic packaging bags, which should not be damaged. Food boxes with loose packaging can easily be contaminated by the environment and cannot be cleaned properly.

2、 Look at the outer packaging. Be careful to check if the packaging symbol indicates the necessary national regulations such as "product name, manufacturer's name, address, product performance standards, production date, shelf life, and cleaning license". If the symbolic content is incomplete or non-standard, it is best not to purchase such food boxes.

3、 Look at the box body. The color of a high-quality food box should be uniform and clear, and there should be no obvious depressions or wrinkles at the mouth of the box.


Qualified plastic straws

1、 Look and press: First, check the information marked on the production packaging bag to see if it has the production date, shelf life, production license, and serial number (QS symbol). It is better to appear clear and free of impurities to the naked eye under sunlight. If there are some spots inside, it may be produced using waste plastic. Just press it down again. Flattening the straws together can quickly restore the original shape. Although there may not be many impurities in the "three no" products, it takes a relatively long time to recover after being pressed down.

2、 Hot and smelling: If the straw emits a plastic odor when encountering hot drinks, it is definitely a suspected straw. A straw made of regular materials can withstand high temperatures above 100 ℃ and will not emit a plastic odor when exposed to heat.

Article organization sealing glue manufacturer www.hshangli.com