What is the difference between emergency button sewing buttons and four-button buttons?

Sewing buttons and emergency buttons can also be collectively referred to as four-button buttons (general name outside the industry). The difference between sewing buttons and emergency buttons is that the tension (closing force) is different. Emergency buttons use springs to control the tension. The tension is smaller than sewing buttons and will not change. Sewing buttons use spring coils to control the tension value. The tension value is relatively large. It is used on strollers, golf bags, and other sports equipment, and is used on items with high tensile strength requirements. Emergency buttons are mostly used on clothing fabrics, etc. There are also differences if you look carefully at the internal structure and craftsmanship.

Button classification

a. According to button size (i.e. diameter size)

That is, we often say 14#, 16#, 18#, 20#, 60#, etc.! Its relabeling formula is: diameter = model * 0.635 (mm). If we have a button in our hand but don't know its model size, we can use a caliper to measure its diameter (mm) and divide it by 0.635.

b. There is another way to express the size of the button, which is L

The conversion relationship is as follows:

Button size:

1L=0.635MM 1MM=1/25 inch INCH) Representation unit: L, No. (LIGNES)

14L=8.89MM =11/32"

16L=10.16MM =13/32"

18L=11.43MM =15/32"

20L=12.7MM =1/2"

60L=38.1MM =1-1/2"

c. Button quantity and unit:

PIECE PC.=1PC

Play OZEN D.=12PCS

Luo GROSS G.=144PCS

GREAT GROSS GG.=1728PCS=12G

d. According to materials:

Natural types: real shell buttons, coconut buttons, wood buttons, bone buttons (common horn buttons), bamboo buttons, fruit buttons, fruit shell buttons, etc.

Chemical industry: organic buttons, resin buttons, ceramic (zirconia) buttons, plastic buttons, combination buttons, urea buttons, spray-painted buttons, electroplated buttons, snap-on buttons, cloth strip buttons, gold buttons, etc.

Others: Chinese knot, four-button buckle, metal buckle, horn buckle, imitation leather buckle, I-shaped buckle, denim buckle, magnet buckle, laser letter buckle, vibrating buckle, etc.

e. Among resin buckles, they can be divided from the blank:

Bar buckles: pearlescent buckles, pattern buckles, ordinary bars, etc.

Sheet material buckle: Pearlescent corrugated board (including fake corrugated board, real corrugated board), pearlescent board, striped board, single color board

Manhattan: multicolored buckles, single color buckles

f. Divided from the holes:

Dark eye button: Generally on the back of the button, it is perforated radially through the button.

Open-eye button: directly connected to the front and back of the button, usually four-eye button and two-eye button

Tall Button: On the back of a button, but with a shank on the back and a hole in the shank.

g. Points for deducting method points from safety:

Hand-sewn buttons: sewn directly onto the garment with thread;

Four-button buckle: Use a mold to buckle the clothes;

k. According to photometry:

There are glossy buckles, semi-glossy buckles, matte buckles, and matte buckles.