Zipper knowledge (4)
19th,
Plastic zipper what are the main dyestuffs that nylon zipper is dyed?
Dispersed dyestuffs.
20, why dyestuffs include, forbid even nitrogen to accord with requirement for environment protection?
Disperse dyestuffs some color contain, forbid even nitrogen composition, dye zipper and human body contact, can bring out some disease, so is unsafe.
21st, why is nylon zipper prone to the colour difference?
Because the main material that nylon zipper uses is monofilament, suture, dacron processes silks, of different molecular weight, the colouring is different, the same zipper is prone to the colour difference.
22nd, what is the basis of differentiating the colour difference?
National standard, GB/T250 GB/251
23rd, under what environmental condition to distinguish the grade of colour difference?
Distinguishing the grade of colour difference to the color case in standard sources.
24th, which kind does the light source which world usually use have?
D65, CWF, TL84,etc..
Is 25, any color fastness?
Color fastness after the zipper is dyed.
26th, which kind does the zipper mainly have to examine the color fastness adopted?
Rub color fastness and the color fastness of water washing, color fastness of sweat stain, drying the color fastness, in the sun,etc..
27th, why did materials such as zipper, PU, PVC,etc. contact producing and moving the color phenomenon?
The dyestuffs molecule in the zipper keep in touch and spread to PU, PVC surface fabric in PU, PVC under plasticizer function, produce and move the color phenomenon.
28, why zipper will with move color and color different?
It can be examined that there are standard methods in the test of color fastness of the zipper, what the zipper is contacted is cotton.
29th, why is some nylon zipper chain tooth hard?
Mainly use polyester monofilament performance to be bad, it is wrong to dye the material matching of melting, it is too high to dye temperature, return to and dye the factor such as being too much of the number of times.
30, why
Metal zipper require customer offer, come real kind of color take heavy a little?
The zipper is made on links: Chain base, draw head, stop, turn on tail piece to color, need, go on, compare with real kind from head to foot, small real kind can to forbid color, seldom smaller than 10CM/ square in not operating too.
31,Why is there defect of breaking on some nylon zipper?
The main reason is as follows, ( 1 ) The roller chain tooth shape of shaping is inaccurate; ( 2 ) Sew the fastener device high strung of spring, the tooth distance and drawing the distance taking the wheel to pull of the chain tooth is out of step.
32nd, which position is the zipper prone to the phenomenon of hurting one's feeling?
( 1 ) The metal in the zipper is stopped from head to foot; ( 2 ) Bigger burr has not been removed while drawing the head appearance; ( 3 ) Chain tooth produced because it has not found that the mould is damaged or turning on the end part.
33rd, what differences do cloth glue and transparent glue have?
The glue of cloth and material of the transparent glue are different, so its performance to temperature is different, the glue of cloth is good, transparent glue is bad, especially transparent glue splits open but the cloth glue has not been influenced in - 40 ??, and friction and serviceability, the glue of cloth should be firm.
34, why stick to glue to be position easy to tear or take off, blow?
Stick the glue and intubate place side and hand over the place, because it is centralized to insert the stress while pulling out, so easy to tear.
35th, how to distinguish nylon, moulding plastics, metal zipper cloth are taken?
Nylon flat area of zipper has not take the muscle; Bring if symmetry to have positive and negative bring muscle a note on one side in cloth
Mould, knit muscle lead ' Call the sideband of lock too) ; If had 1 to lead in the cloth Root bringing between two parties muscle bring metal cloth ' Claim too the color muscle is taken) .
36th, what advantages does zipper wave shape cloth have?
Area of this cloth is sewn on the clothes, ones that can be sewn are levelled, does not get up docily and join.
37th, what is the main reason that the zipper produce the broken belly?
The main reason is the chain tooth and draws the head the size of is unworthy of, concrete: ( 1 ) Chain tooth tooth shut wide size with draw head wide to unworthy of; ( 2 ) Tooth chain bring thickness to be enough, or chain tooth draw head to be wide and oversized, draw hair of angle that part, close cooperate with getting improper.
38, zipper light to slip degree light OK?
The light slippery degree of indexes of the zipper, the load that should meet the zipper first is just considered after drawing important indexes such as time, brute force,etc., degree is received by user favourably in appropriate slipping lightly, but not slip lightly degree is the lighter, it is the better.
39th, how many top seed's products does waterproof zipper have?
There are generally civil waterproof zippers, industrial waterproof zippers and airtight, water tightness zipper.
40, what type person who give a piggyback turn on tail one?
Fixed to hold tail piece punch, turn on tail the back of one ' Below) Ask, fight the giving a piggyback type, its advantage is: Open the end one out of shape and small, insert and pull out flexibly.
41, what type side type turn on tail one?
Fixed to open end piece punch, play and hold a side of end, the reason why call the side typing type.
42nd, does yard hold conversion put with the rice?
Length l y d of the zipper (yard) =0.9144mm (rice)
43, conversion of inch and centimeter?
1 inch =More than 2.54 centimeters, what electric swimming paint draw the head?
Adopt electric
Pullers swimming paint scribble, load with whom craft produce draw the head, its characteristic is: It is good to paint the membrane intensity; The shortcoming is: The color is dull.