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What's the difference between crystal bottle and glass bottle?

What is the difference between glass and crystal? The appearance of glass and crystal are very similar, but they are two completely different substances. The main differences are as follows:  1. Different materials  Crystal is a crystal of silica, and glass is just a molten mixture containing silica.  2. Different efficacy  Glass only has a decorative function. In addition to the decorative function, crystal also has a piezoelectric effect, which has a special function of maintaining health.  3. Different prices   The high-quality crystal looks clear and translucent when looking at the light. There are no small bubbles or water lines inside, so it is expensive. Therefore, the quality of the crystal is closely related to the price.  4. Different physical properties  (1) Crystal is a crystalline body with high hardness (Mohs level 7), while glass has a low hardness (Mohs level 5.5), crystals can make marks on the glass, but not vice versa.   (2) The crystal is a crystalline body with good thermal conductivity, and it will feel cold when licked with the tip of the tongue. The glass is warm.   (3) It is distinguished by polarizing lens. Crystal can transmit light, but glass cannot.   (4) The high-quality crystal looks clear and translucent when looking at the light. There are no small bubbles or water lines inside, so it is expensive. Therefore, the quality of the crystal is closely related to the price.   (5) The processing technology is different. The glass can be formed by hot casting, saving materials and labor, and low cost. Crystal is a crystalline body and cannot be reversed after being heated and melted, so hot casting cannot be used, but cold working methods such as cutting and grinding can only be used. Identification of glass and crystal 1. Wipe or wash the crystal crafts you want to identify. After they are dry, touch the crafts with the tip of your tongue. If there is a cold feeling, it is a crystal product, and if it has a warm feeling, it is a glass product. During the test, try not to hold the sample with your hands or place the sample near a heat source (in the sun, by the stove), so as to avoid errors caused by the temperature rise of the sample.  2. Use a magnifying glass to observe the handicrafts. Inside the glass, there are often swirling or arc-shaped lines caused by uneven melting, but there is no crystal. In addition, there are often many bubbles in glass and few in crystal.  3. For the crystal ball, you can put it on the newspaper and look at the newspaper below from the top of the crystal ball. If it is a real crystal, the writing on the newspaper will have double shadows. In the case of glass products (including crystal glass), there is always only one image of the handwriting on the newspaper.  4. For crystal glasses, it can be checked in a polarizer. Adjust the polarizer to the orthogonal position. At this time, the field of view is completely black. Then place the crystal glasses between the upper and lower polarizers. The lens and the polarizer should not be strictly parallel. You can tilt it slightly so that there is one lens and the polarizer. Cross the angle, and then turn the spectacle lens. If it is made of real crystal crafts, there will be obvious brightness changes in the field of view. If it is always dark when rotating, the spectacle lens is a glass product or crystal glass (glass made of low-quality crystal).   5. When traveling, the polarizer is inconvenient to carry. You can bring two polarizers (or two small polarizers for photography) with a diameter of less than 40mm. When measuring, one person holds two polarizers so that they are orthogonal and completely black. Human hands hold the glasses and rotate them between the two polarizers. If there is a significant change in brightness, it is a real crystal product, and if the darkness does not change, it is a glass product.

How to improve annealing of glass perfume bottle?

Due to the tolerance of drastic temperature changes, the glass bottle produces a temperature gradient between the inner and outer layers during the molding process, and due to the differences in the shape, thickness, and degree of cooling of the finished product, irregular thermal stresses are generated in the product. Such thermal stress can reduce the mechanical strength and thermal stability of the product, and also affect the optical uniformity of the glass. If the stress exceeds the ultimate strength of the finished product, it will break on its own. Therefore, the uneven thermal stress in the glass bottle is a serious mistake, and annealing is a heat treatment process that can eliminate the thermal stress in the glass bottle as much as possible or reduce it to an allowable value. Except for glass fibers and thin-walled small hollow products, indeed all glass products must be annealed. Thermal stress in glass products can be divided into temporary stress and permanent stress according to its characteristics.Temporary stressDue to its poor thermal conductivity, when the glass is heated or cooled below the strain point temperature, a temperature gradient will be formed in each part, resulting in inevitable thermal stress. This kind of thermal stress, with the existence of the temperature difference, the greater the temperature difference, and the greater the stress temporarily, and disappear with the disappearance of the temperature difference. This thermal stress is called temporary stress.But before the temperature is out of adjustment, what should be paid attention to, of course, the stress can be eliminated by itself. When the stress value exceeds the ultimate strength of the glass, the glass will rupture itself abnormally, so the heating or cooling speed of the glass in the brittle temperature range should not be too fast. Permanent stressThe thermal stress caused by the temperature difference, when the glass is cooled from above the strain point temperature, the glass is cooled to room temperature, and the temperature of the inner and outer layers is out of adjustment, but it cannot be completely dissipated. The magnitude of the permanent stress depends on the cooling rate of the finished product when it is above the strain point temperature, the viscosity of the glass, the thermal shortening factor and the thickness of the product and other glass machinery.Annealing of glass is to reheat the glass product with permanent stress to the temperature at which the particles inside the glass can move, and the displacement of the particles is controlled to disperse the stress (called stress relaxation) to eliminate or weaken the permanent stress. The rate of stress relaxation depends on the temperature of the glass. The higher the temperature, the faster the relaxation rate. A suitable annealing temperature range is the key to obtaining precise annealing quality for glass. In the actual production process, it is impossible to completely eliminate permanent stress. Annealing can reduce or homogenize the residual stress to a minimum to achieve the enhancement of the glass to get purpose of mechanical strength and thermal stability.

The coating technology of perfume glass bottle

The Coating Technology Of Perfume Glass Bottle The perfume glass bottle coating production line is composed of coating house, suspension chain and oven. And before coating, there is water treatment system to clean the glass bottle, here we need to pay more attention on the drainage issue of polluted water. Coating quality of glass bottle is related to water treatment, surface cleansing, electric conductivity of hook, air volume, powder quantity, and technical level of operators.Opeate as recommend operations.1. Former treatment: the coating former treatment of glass bottle includes pre-deoxidation, deoxidation and surface conditioning. The former treatment will not be good if temperature is not high enough in process of deoxidation in cold area.2. Pre-heating: After former treatment, the bottles will go into process of pre-heating, it needs 8-10 minutes. In principle, in order to increase the adhesive force of color powder, do make sure the glass bottle has enough afterheat before go into coating house.3. Dust catching and cleansing:  it's important process for glass bottle to be coated, to make sure no granulate on the surface after coating.4. Coating: it depends on the technical level of operator to adjust machine in best condition to coat high quality perfume glass bottle.5. Dry: It needs suitable temperatuer and baken time for glass bottle, normally temperature 180-200℃. Don't place the oven far from the coating house, best within 6 meters. 

Brief analysis of the special silk-screen printing process of glass perfume bottles

1. Etching screen printingThe modern etching screen pirnting make the process of glass bottle decoration more convenient, save time, save cost. There are two kinds of etching screen printing, one is Thermoplastic etching screen printing, one is cold etching screen printing.Thermoplastic etching sreen printingUse the adhesive made of paraffin, pitch, stearic acid and mix with less corrosion resistant powder to be printing material, then print the artworks on glass bottle by the thermoplastic screen to format as corrosion resistant film.The part of glass display on the film is the logo or pattern we need to etch. Use Fluorine perchlorate to make the etch, and use boiled water to wash the etched the pattern.Cold etching screen printingWe can also use the cold type to print the glass bottle, use special asphalt paint mix with corrosion resitant or special ink to print.Then etch it after the ink dry.2. Ice-patterned silk screen printingThe elegant ice-patterned silk print used on advanced glass ware or contruction glass material. First step is to print color or colorless glass flux layer on the glass bottle surface. Then put the ice-patterned glass particles on the flux layer, to sintering with 500~590℃ to make the flux layer melted with glass prticels and perform to relief effect.3. Frosting screen printingFrosting is kind of decoration to melt the glaze layer on the glass bottle surfacto with 580~600℃ high temperature bake to display different color compare with bottle. Hereunder shows how to do with frosting screen printing: On the surface of a glass product, screen prints a pattern formed by a flux inhibitor.To be printed on the pattern of dry, and then frosted processing.Then after high temperature baking, there is no pattern of the sand surface will melt on the glass surface, and the place of the silk screen printing pattern due to the effect of flux resistance, the sand surface covered on the pattern can not be fused on the glass surface.After baking, the transparent floor space pattern will appear through the translucent sand surface, forming a special decorative effect.

Three trends drive the growth of market of cosmetics bottles and perfume bottles

Spending on beauty and health care is on the rising The study showed that the Beauty Salon and Beauty Centre is the biggest benificary, customers have been focusing on the beauty and healthy. They are willing to spend high cost to have the on time beauty treatment and service from professional people.  It's driving the growth of cosmetic bottles and perfume bottle market with more and more beauty companies appearing and consume mode changing on the spend of beauty of customers. More attractive of gorgeous packagings According to the study, high-end packagings can improve the satisfication of a beauty brand, and increase rate of rebuy and recommend to others. The prime business players on the cosmetic bottle and perfume bottle market are brining in kinds of glass packagings of cosmetic and perfume to enlarge their product lines. Permeability of cosmetics and perfume is increasing in developing countries Emerging economies are bringing more and more demands on the cosmetics and perfume, so more and more beauty companies are facusing on the market of emerging economies.

How do you control the quality?

GP Bottles has thorough quality control system start from designing."Quality first" is one word which is always mentioned by China supplier, it's a slogan of China factory, that's ture.As one of the largest market all over the world, China would be the first purchase choice for international trader.We have the complete supply chain for each industry, and lower labor cost, how to present quality products with this great advantage?More and more China suppliers believe that we have the ability to present qualitied products with the wisdom of Chinese people, and the advance expierence from our partner.GP Bottles as one of numerous China supplier, we are ordinary, we just insist the customer expierence is the most important part in the business cooperation.Do simple business, present quality product is our aim, we believe and insist it.

What's the delivery time?

Delivery time for glass bottles It takes 45~60 days to finish one order for glass perfume bottles, stocks available for some models. We can provide you the exisiting production plant to select bottle if you have a urgent delivery time. Delivery time for perfume cap It takes 45~50 days to finish one order for perfume caps, stocks avaiable for some models. We can provide you the exsiting production paln to select caps if you have a urgent delivery time.