India (full roll) ground color paste (or ground color padding) → drying → printing (white, color paste) → normal pressure steam (170-180°C, 7-8min) → cold wash → hot water wash (or restore cleaning) → hot water → dry.
Or: Printing (pulling white, color Pulp) → Drying → Cover printing color paste → Atmospheric pressure steaming (170-180°C, 7-8min) → Cold washing → Hot water washing (or reduction cleaning) → Hot water washing → Drying.
Precautions
1. The disperse dyes for ground color disperse dyes that are suitable for anti-disinfection of alkaline agents should have 1-3 ester groups on the molecular structure, and the ester groups are hydrolyzed to soluble substances at high temperatures, because these dyes are not sensitive to alkali, so Must be tested to understand the matching of alkali and alkali dosage and dyeing depth in order to achieve the best anti-discharge effect. As a discoloration-resistant disperse dye, it is desirable that the alkaline agent be excellent in stability, and the occurrence of alkalinization does not cause lightening and hue change.
2. Alkali agent anti-discharge printing method available alkali agents are sodium carbonate, sodium bicarbonate, potassium carbonate and sodium hydroxide. The basicity of sodium bicarbonate is weak, and the whiteness of anti-whitening is poor. Potassium carbonate and sodium hydroxide have good whiteness and whiteness, but they absorb moisture and absorb moisture in the air to permeate, resulting in unclear outlines. Therefore, sodium carbonate is often used as an anti-damping and printing alkali agent, and its anti-whitening effect and pattern contour clarity are better.
3. The wetting agent's role is to absorb moisture when steaming, to promote the full hydrolysis of disperse dye ester groups, in order to improve the anti-discharge effect. Commonly used wetting agents are glycerol and polyethylene glycol. In order to more effectively increase the effect of alkaline anti-discharge, the manufacturer has developed a new type of pick-up agent for alkaline polyester anti-discharge printing, can improve the whiteness and color pull-out effect and the clarity of the outline of the pattern.
4. The paste used for alkali anti-discharge should be of good alkali-resistance type, generally etherified starch, etherified vegetable gum, carboxymethyl cellulose and the like. According to the different printing methods, these pastes can be mixed in different proportions to obtain a better printing effect.
Dyestuff manufacturers often classify their products as 1-5 in terms of extractability, providing convenience for dye selection. The dye in the range of 5 or 4-5 is suitable for whitening, and the dye in Grade 4 is suitable for color discharge. If the color of the dye is very dark, even grades 3-4 can be used. Dyestuffs with a drawability of only one grade are practically non-removable and can therefore be used as coloring dyes in the color-drawing process. However, one test should be conducted under actual production conditions to establish a feasible dye application information for the discharge printing process.
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Nuts
A nut is a type of fastener with a threaded hole. Nuts are almost always used in conjunction with a mating bolt to fasten multiple parts together. The two partners are kept together by a combination of their threads' friction (with slight elastic deformation), a slight stretching of the bolt, and compression of the parts to be held together.
In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: lock washers, jam nuts, specialist adhesive thread-locking fluid such as Loctite, safety pins (split pins) or lockwire in conjunction with castellated nuts, nylon inserts (nyloc nut), or slightly oval-shaped threads.
Square nuts, as well as bolt heads, were the first shape made and used to be the most common largely because they were much easier to manufacture, especially by hand. While rare today[when?] due to the reasons stated below for the preference of hexagonal nuts, they are occasionally used in some situations when a maximum amount of torque and grip is needed for a given size: the greater length of each side allows a spanner to be applied with a larger surface area and more leverage at the nut.
The most common shape today is hexagonal, for similar reasons as the bolt head: six sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. It takes only one sixth of a rotation to obtain the next side of the hexagon and grip is optimal. However, polygons with more than six sides do not give the requisite grip and polygons with fewer than six sides take more time to be given a complete rotation. Other specialized shapes exist for certain needs, such as wingnuts for finger adjustment and captive nuts (e.g. cage nuts) for inaccessible areas.
A wide variety of nuts exists, from household hardware versions to specialized industry-specific designs that are engineered to meet various technical standards. Fasteners used in automotive, engineering, and industrial applications usually need to be tightened to a specific torque setting, using a torque wrench. Nuts are graded with strength ratings compatible with their respective Bolts; for example, an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property class 10.9 bolt without stripping. Likewise, an SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on.
Barrel nuts, Cage nuts, Flange nuts
FinExpress Precision Manufacturing(Dongguan) Co., Ltd , https://www.finexpresshardware.com