Production and Application of Candles (Part 2)

2.1 Melting casting method

The method is to melt and melt solid paraffin into wax juice, inject the wax juice into the model, cool and coagulate to obtain the product. The temperature of the wax juice is high, the required molding time is long, the problem of sinking during the molding process is serious, and the workload of wax repair and shaping is large .

2.2 Stamping method

The method is to process a large piece of solid paraffin into a spherical raw material with a diameter of 0.3-0.8mm through a machine, and then process it into a candle through a punching machine. This method has high efficiency and large output. The disadvantage is that the product is loose and cannot form a uniform overall structure.

2.3 Extrusion method

In this method, the solid paraffin is mechanically processed into a paste, and then the candle is formed into various shapes by extrusion. Wax has plasticity in a certain temperature range, it will deform in a plastic state, and can form a more uniform overall structure.

3 special candles

After nearly a century and a half of development, and people's continuous pursuit of quality of life, candles are no longer used as lighting tools and are only used single-handedly, and more of them are given specific functions.

3.1 Color flame candle

Color flame candles can emit red, orange, yellow, green, blue, purple and other colors when the candle is lit. The main combustion agent generally uses non-paraffin type organic substances, and the candle wick needs to be processed. Select lithium, sodium, Inorganic salts of metal ions such as potassium, calcium, magnesium, strontium, and copper are used as color-developing agents. Caiyan candles were first seen in the 1950s, with more research in the United States and Japan.

3.2 Scented pillar candles

Rose scent has anti-depressive and calming effects, soothes emotions and relieves stress. Lavender essential oil is a natural anti-inflammatory and antidote. It can be used for colds, coughs, and bronchitis. It also has a significant effect on preventing mosquito bites. These ingredients can be used Add to candle to make scented candle.

3.3 Music candle

The system receives signals from the flame sensor module and sound sensor module and processes them, thereby controlling the LED control module and the buzzer module to flash and play music.

3.4 Transparent candle

Transparent candles are made by melting paraffin, stearic acid and trace chemicals in an aluminum pot, and pouring them into a machine mold pre-coated with a glycerin layer and equipped with a wick. The water tank of the candle machine is filled with cold water before pouring to circulate it to promote its condensation. After coagulation, cut the wick. With this method, the candle can not only be completely transparent, but also naturally shaped, without any container.

4 Application of candles in other fields

With the continuous progress of scientific and technological innovation and the continuous expansion of market demand, in addition to the functions of lighting, atmosphere and sacrifice, candles also play an irreplaceable role in many fields.

5. The development and outlook of candles

In addition to being used as a lighting tool in people's daily life, gift candles are more important to add a warm and romantic atmosphere to people's lives. Therefore, special function candles have attracted increasing attention. The development of the candle industry should focus on the following two aspects:

(1) Physical or chemical modification of candle raw materials through additives to increase the hardness of the candle, prolong the burning time, improve brightness, and pay special attention to environmental protection.

(2) At present, the vast majority of research on candles stays in the direction of daily necessities, and there are only a few involved in other areas. Therefore, it is of great significance to develop other aspects of candles and apply them to more fields.