PVC Suction Hose Atmospheric Pressure Principle
PVC Suction Hose Atmospheric pressure principle
Straw and plastic straw, one-time pap, straw, etc., is used for absorbing reagent disposable plastic transfer tools, it is the plastic as raw material. Straws are more widely application in the process of test, but many of its relevant knowledge is not very understanding, the following will come for you to make a brief introduction:
Mainly using the principle of the atmospheric pressure, when using, people to the straw to siphon off some of the air, the pressure will cause tube size, and in order to balance the air pressure, atmospheric pressure will force liquid will rise. In stop inspiratory tube of liquid drops, returned to the pressure balance. This is the wonderful principle and application of straw.
After the inspection of food grade raw material of polypropylene by electric heating, temperature rising up to the process requirements, through the die extrusion molding, extrusion molding after product cooling through the cooling water tank, and according to the product standard check qualified product extrusion molding, after cooling, according to product standards and customer requirements, the product of cutting, after cutting the length of the inspection, whether reach the standard and qualified products, or customers, after cutting the product through extrusion molding machine, extrusion molding, after inspection, if qualified, ozone disinfection products after molding, products shrink-wrapped after disinfection, inspection, if qualified, shrink-wrapped products after manual packing.
Straw in a sealed plastic bag, children tend to borrow when you pick up the straw straws pointed to Pierce the plastic, can take out. Here is worth reminding parents pay attention to the children out of straw and plastic toughness is very big, when take straws have been pull down a small piece of plastic film adsorption on the pipette tip, whether there is a bottle of foil is a straw into the yogurt, plastic film and foil may also enter the respiratory tract, the weak, suffering from respiratory diseases of children is easy to cause illness, and difficult to detect the cause, please note when buying yogurt, to prevent the occurrence of accidents. We come to introduce a few methods to detect straws quality stand or fall, to share with you how to choose the high quality of straws? Use the method of doctor of traditional Chinese medicine, is "listening, asking and".
1. The first is "hope", "hope" is divided into the following several aspects: the first to see the outer packing of the straws have QS. Try to select no color in the second straws, if there is one color, the security of straw will reduce, the darker the wants special attention; There are no black spots impurities in the third to see whether the straw or broken bubble, because these are the characteristics of the unqualified products. 2. The second to "smell", in straw before contact beverage acrid smell a smell any peculiar smell.
3. The third is to "q". Is to begin to knead a pinch, if the straw is no elastic, pinch the flat, then the straw is made of thin material, poor quality, in use process will be very easy to get sucked flat.
1. The definition of straw: the definition of straws straw (straw), or the water pipe, is a cylindrical, hollow plastic products, its main function is used to drinking a cup drink, also have to take some cooking good animals long bone marrow. Generally in 0.5 cm in diameter, but used to eat yogurt, pearl milk tea drinks, such as will use coarser straws, some 1.5 cm in diameter. Some relatively rare, diameter of tiny straws used to drink hot drinks.
2. The founder of straw, straw is America's Marvin Stone (Stone) Marvin invented in 1888, the 19th century, americans like to drink cold light sweet wine, in order to avoid mouth frozen strength reduction because of the heat of the wine, so drink don't mouth to drink, and with hollow natural straw to drink, but natural straw easily broken, the flavor of it will penetrate into the wine. At that time, the United States have a cigarette maker Marvin stone, inspired from the cigarette, made a paper straw. Try drinking, neither fracture, no odor. From then on, people not only use the straw when light sweet wine, other cold drink, also like to use paper straw. Plastic was invented, because plastic straws, flexibility, beautiful sex is better than paper and paper straw was replaced by the colorful plastic straws. The inventor not apply for patent.
3. The principle of straw: the principle of straw Straw is using the principle of atmospheric pressure, when used to siphon off some of the air, the straw will cause smaller pipe pressure, and in order to balance the air pressure and atmospheric pressure will force liquid will rise. Stop on the inhale, liquid drops, returned to the pressure balance. This is the wonderful principle and application of straw.