EDM welding materials can be divided into three types: labeling, card labeling and volume labeling.
Among them, card labels can be divided into paper cards and plastic cards. Paper cards can be subdivided into soil cards, ordinary cards and glass cards. The shape of the label is a bit like a card label, but the difference is that the pattern and color of the label are relatively simple, and the common paper is ordinary thin writing paper. The label is usually attached to a rectangular matchbox. There is a cylindrical matchbox with a label on it, but the label is bigger, square and better in paper quality than ordinary labels.
In the folk spark data, the capital pinyin letter t is used to indicate the label; K stands for card mark; BK stands for glass card; J stands for volume label.
Classification by subject
In addition to ordinary celebrities, Chinese and foreign buildings, animals and birds, exotic flowers and plants, places of interest, there are advertising sparks, special sparks and special sparks. Collectors can be divided into various themes according to the pictures of fire flowers.
Some card labels have completely different patterns on the front and back, such as printing advertisements and dancing shapes on the same side. In this case, collectors can handle it flexibly or rely mainly on the patterns on the main display surface.
Classification by year
According to China's national conditions, spark can be generally divided into early stage, i.e. 1877 to191year, middle stage and modern stage, i.e.191year to/kloc-0.
In the spark of new China, the period from 1966 to 1976 can be regarded as a special historical period, and there are stages before and after this. It is difficult to determine the age of the early sparks. The first collectors can ask the collectors or ask for help. Starting from 1982, many matchbox stickers are printed with the year and number. Spark books collected by years are like a "Spark Yearbook".
Matching type
While collecting sparks, people often care about matches involuntarily, and even collect all kinds of matches in the form of physical objects. In some large-scale spark exhibitions, some physical competitions are often displayed. In fact, there are many kinds of collocation, which can be roughly distinguished from the following aspects.
(1) straw difference
Matches are divided into wooden stalks, paper stalks and wax stalks, and their lengths are also different. It's less than an inch short and looks like chopsticks.
(2) the color difference of the drug head
In addition to the common blackheads, there are red, yellow, orange, green, white, blue, purple and other colors.
(3) differences in medicinal properties
In addition to the commonly used sulfur-containing safety matches, there are sulfur-free matches, aromatic matches, windproof matches, moisture-proof matches, signal matches, welding matches and so on.