Question 2: Which brand of thermos cup has a long heat preservation time? Hello, I have used this elite for a long time. I didn't count how long it would last. The water poured on the first day was still hot at midnight the next day. I feel that the quality is quite good and the style is very fashionable. The important thing is that the material is good and the cup is hard.
Remember to adopt
Question 3: What thermos cup keeps warm for a long time? The holding time of the safety cup is related to the quality of the thermos cup, usually the thermos cup. Including. Stainless steel. Glass. You are in a hurry. There are three kinds of plastics, but most of them are made of stainless steel. This depends on the analysis of the interface and whether it is adopted. Double liner or vacuum to determine the time of the thermos cup. Usually, the insulation time of the thermos cup is about ten hours.
Question 4: What brand of thermos cup has a long heat preservation time?
Question 5: How to choose a thermos and keep it for a long time, at least 6 hours! ! ! The insulation effect of the thermos cup needs more than 8 hours.
1 said that buying a thermos cup, heat preservation and vacuum are two different things. Now many merchants say that the so-called thermos cup is actually a double-layer insulation, not a vacuum.
2 not too light.
3 is heavy enough. Shake it up and down to see if there is any other movement. Some businessmen have Gaza at the bottom of their cups.
Squeeze the cup gently with both hands, the harder the better, which proves that the steel is thick.
The better the packaging, the better the quality and the more expensive the cup, but generally the cup will not exceed 100.
Question 6: How long can the thermos cup last? The worst function of heat preservation and cold preservation of the thermos cup is around the bottleneck, where heat is mostly circulated by conduction. So when manufacturing, always try to shorten the bottleneck. The larger the capacity, the smaller the bottle mouth, and the better the insulation effect. In general, the cold drink in the bottle can be kept at about 4℃ within 12 hours. Boiling water is about 60℃.
Stainless steel insulation takes about 6 hours-12 hours, and most stainless steel thermos cups can be insulated for 2 to 4 hours, depending on your insulation environment. For example, it takes about 2 hours in winter-12 degrees, and 4 hours in summer +22 degrees; Some stainless steel thermos cups with particularly good quality can be kept for 4-8 hours, and the unit price should be between 300 yuan and 800 yuan, or even higher.
Under normal circumstances, a good quality thermos can keep the temperature above 40 degrees after 6-8 hours with boiling water above 95 degrees. Some are of good quality and higher. Like that brand, the price is high, and it is not necessarily much better than the general insulation effect.
The holding time depends on the structure of the cup and the thickness of the material.
1. The insulation time of large-capacity and small-caliber thermos cups is long, while that of small-capacity and large-caliber thermos cups is short;
2. The thinner the material, the longer the heat preservation time, but the cup body is easy to be damaged and deformed, which affects the service life;
3. Measures such as plating metal film and copper on the outer layer of the inner container of the thermos cup can also increase the degree of insulation.
Question 7: How long can the stainless steel thermos cup keep warm? (1) Look at the label or instruction of the cup first. General regular manufacturers will write down the product model, name, volume, material, production address, manufacturer, standard number, after-sales, usage and so on. If there is none of this, there is a problem.
(2) Identification from the appearance of the thermos cup. Look at whether the surface polishing of the inner container and the outer container is uniform, and whether there are bumps, scratches and burrs; Second, see whether the mouth welding is smooth and consistent, which is related to whether you feel comfortable when drinking water.
; Third, check whether the internal seal is tight and whether the plug and the cup match; Fourth, look at the mouth of the cup. The rounder the better, the immature craft will be out of round.
(3) Sealing test: firstly, unscrew the lid of the cup to see whether the lid is completely consistent with the cup body, then add boiled water (preferably boiled water) into the cup, and then turn the cup upside down for two to three minutes to see if there will be water oozing out.
(4) Thermal insulation test: As the stainless steel vacuum insulation cup adopts vacuum insulation technology, it can prevent heat from being conducted to the outside under vacuum, thus achieving the effect of thermal insulation. Therefore, to test the insulation effect of stainless steel vacuum thermos cup, just pour boiling water into the cup. After two or three minutes, D will touch all parts of the cup to see if it is hot. If any place is hot, the temperature will be lost from that place. It is normal to have a slight fever in a place like the mouth of a cup.
(5) Identification of other plastic parts: The plastic used in the thermos cup should be food grade. This kind of plastic has small smell, bright surface, no burr, long service life and is not easy to age. Ordinary plastics or recycled plastics are characterized by large smell, deep color and many burrs, which are easy to age and break, and will stink after a long time. This will not only shorten the life of the thermos cup, but also threaten our health.
(6) Capacity detection: Because the thermos cup is double-layered, the actual capacity of the thermos cup will be different from what we see. First, see if there is little difference between the depth of the inner layer and the height of the outer layer of the thermos cup (generally 18-22mm). In order to reduce costs, many small factories often start with materials, which may affect the capacity of cups.
(7) Identification of stainless steel for thermos cups: There are many kinds of stainless steel materials, among which 18/8 means that this stainless steel material contains 18% chromium and 8% nickel. The materials that meet this standard are green products that meet the national food-grade standards, and the products are rust-proof and corrosion-resistant. Ordinary stainless steel cups (pots) are light or dark in color. If it is soaked in salt water with the concentration of 1% for 24 hours, it will produce rust spots, and some elements contained in it will exceed the standard, which will directly endanger human health. When consumers buy thermos cups, they often should not only pay attention to the appearance or name, but also pay attention to whether the instructions indicate insulation. At present, many cups and pots are generous in appearance and novel in style, much like thermos cups, but they are not insulation at all. Consumers subjectively think that they are thermos cups based on their impressions of thermos cups. So don't make such a small mistake, be sure to read the instructions.
(8) In addition to material and appearance, more consumers will choose brands. A good brand represents quality, after-sales service and so on. Ling, let's take the brand as an example. How to judge whether it is genuine Disney when choosing a thermos cup? It depends on the label. Generally, there will be Disney's unified anti-counterfeiting label on the tag of authentic Disney. Don't look at Disney with cartoon heads.
Question 8: How long does it take to keep the thermos cup warm? Consumers are most concerned about the long heat preservation time when buying thermos cups. A good thermos should be kept at 60℃ for at least 4 hours and at 40℃ for at least 8 hours. According to my analysis, there are many factors that affect the holding time of the thermos cup. From the user's point of view, it can be divided into two factors, environmental factors and technical factors. Let's see why these two factors affect the holding time.
I. Technical factors
1, stainless steel material: cheap 20 1 stainless steel, if the process is the same. The difference of holding time in a short time is completely imperceptible, but the performance of 20 1 stainless steel is stable and not easy to deteriorate. After a period of use, the corrosion of steel layer leads to air leakage in vacuum layer, which affects the insulation effect.
2. The most important factor affecting the insulation effect. If the vacuum pumping technology is backward and gas remains, the cup will heat up after being filled with hot water, which will greatly affect the heat preservation effect.
3. Structure of thermos cup: There are two common structures of thermos cup: straight cup and bullet cup. Because the bullet uses the inner plug cup cover, the bullet thermos cup is made of the same material, which is more durable than the straight cup, but it is slightly inferior in beauty, volume and convenience.
4. Diameter of the thermos cup: The smaller the diameter of the thermos cup, the better the insulation effect, but usually the small diameter will make the design of the thermos cup biased towards the little lady cup, which is not elegant enough.
5. Cup cover sealing ring: Under normal circumstances, the thermos cup will never leak, because water leakage will inevitably lead to a significant decline in insulation effect. If there is leakage, please check and adjust the sealing ring.
Second, environmental factors.
1, room temperature: the temperature of the liquid in the thermos cup gradually approaches room temperature, so the higher the room temperature, the longer the holding time, and the lower the room temperature, the shorter the holding time.
2. Air circulation: Generally speaking, when testing the insulation effect, you need to choose a windless environment. The more air circulation, the more frequent heat exchange between the inside and outside of the thermos cup.
3. Capacity: The more hot water in the thermos cup, the longer the heat preservation time.
4. Water temperature: Usually, the higher the temperature of hot water, the faster the temperature drops again. When the freshly boiled water is poured into the cup, the actual temperature is only about 96 degrees, and the temperature drops quickly after being placed for a short time; The upper limit of the thermostat of the water dispenser is generally 85 degrees, so the hot water temperature of the water dispenser can only reach 85 degrees.
Question 9: What brand of thermos cup has the longest heat preservation time? The holding time of the thermos cup is related to its capacity and the size of the bottle mouth. The larger the capacity, the better the insulation effect. Vacuum flask, tiger brand and elephant seal all have good insulation effect.