I believe everyone has seen matches. Although they are not very common now, because matches have slowly faded out of our sight, there are still some. Many people have quite insights on the craftsmanship of matches and think it is very simple. Next, Fangzhou will tell you popular science about the production process of matches:
① Manufacturing of stems: woods with loose texture, straight texture, flammable and no peculiar smell can be used to make match stems. Commonly used tree species are Populus or Tiliaceae, pine or spruce can also be used. Pine wood needs to be steamed to remove the rosin contained in it.
After the material is selected, the log is sawed and cut into sections, the bark is peeled off, and then turned into continuous stalk pieces of uniform thickness. The stem slices are then cut into certain specifications.
② Stem treatment: immerse the stems with phosphoric acid or ammonium phosphate solution with a concentration of about 1%, which is called anti-scorch treatment, which can prevent the embers from falling off after the match is burned. After draining to remove the surface moisture, it is sent to the stem drying machine for drying, so that the moisture content of the stems is reduced to 6-8%. After the stems and branches are dried, they are screened by a stem selector to remove broken branches, long strips and wide pieces, and select stems that meet the specifications.
③ Manufacture of matchstick heads: qualified stems are sent to the automatic continuous match machine through a wind pipe or conveyor belt, which automatically performs multiple processes such as stem arranging, stem loading, waxing, spraying, drying and stem unloading.
④ Matchbox manufacturing: Matchboxes are divided into two types: paper boxes and wooden boxes. The carton uses roll paper or flat paper with a thickness of 0.4mm and a basis weight of 300g/m2 as raw materials. The paper separator cuts the original roll board paper into different widths to meet the production needs of the outer box or the inner box. After the inner and outer boxes are made separately, the boxes are set to form a whole. The wooden box is made of wood with good material and no knots. The inner or outer box with scratches is screwed out on the rotary box machine, and then cut into box strips, glued by the box gluer, and then set in box and labeled after it dried.
⑤ Packaging and brushing: matches and matchboxes merge in the packaging process. The cartoning machine neatly puts the matches into the box according to the specified number, and then the phosphor brushing machine brushes the phosphor slurry on the side of the box. There is another kind of phosphor surface that is printed on the side of the box sheet when the trademark is printed, called "printed phosphor surface". The main components of phosphorus slurry are red phosphorus and binder. The traditional adhesive is leather glue, and synthetic adhesives are also used. After drying, the packaging machine seals each 10 boxes of matches into small packets and puts them into the box (100 packets in a small box, called "pieces"; 200 packets in a large box, called "double pieces"), which is the finished product.