Chapter 7 Structural Design and Manufacturing of Spray Cans
The first section of the working principle and characteristics of spray cans
First, the working principle and characteristics of spray cans
Second, the working principle of spray cans
Third, the characteristics of spray packaging
1, the use of convenience
2, good sealing
3, the internal product form is not limited
4, the safety of spray packaging 1 toxicity 2 flammability 3 can be assigned
Fourth, propellants
1. Spray characteristics 1 Dry spray 2 Wet spray 3 Foam 4 Powder 5 Paste 6 Jet 7 Quantitative ejection
12. Ejection system 1 two-phase system 2 three-phase system
14. Common Propellant 1 Compressed Gas 2 Hydrocarbons 3 Fluorocarbons
4. Naming of propellants 1 Naming of hydrocarbon propellants 2 Naming of fluorocarbons
Section 2 Structure and Manufacturing Process of Spray Can Container
First, the type of spray cans and performance requirements
1, the classification of spray cans
2, spray tank specifications
3, the special performance requirements of the spray tank 1 pressure resistance 2 air tightness 3 must limit the size of the container and the size of the structure
Second, spray tank container structure and manufacturing process
1. Structure of metal spray can 1 Structure of metal spray can container 2 Structure size of spray can container
16. When the container of glass spray can 1 is damaged, it can prevent spatter from hurting others 2. Protect the glass surface and prevent UV from penetrating through the glass 3. The impact resistance can be improved by 4 to 5 times 4. It can get the same beautiful appearance as the polyethylene surface and color
3, plastic spray cans
4. Manufacturing process of metal spray cans 1 Manufacturing process of tinplate spray cans 2 Manufacturing process of aluminum spray cans 3 Inner spraying of spray cans
5. Installation of sealed U-shaped cover for opening of spray cans 2 Installation of GV cover
Third, the valve structure and manufacturing process
1, the standard valve 2, a special valve 3, the valve manufacturing process 1 valve between the U-shaped cover and the valve body to tie tight, solid, and through the rubber seat and the air tightness 2 valve and spray tank container is passed U In the case of 3 assembly valves in which the shape of the smoked edge and the crimping of the can seam are to be connected, care should be taken to protect the protective film on the component.
IV. Quality Inspection of Metal Spray Cans
1, leak inspection
2, deformation alkalinity and burst pressure test
3, aerosol valve deformation pressure test
4, aerosol valve leakage test
5, aluminum cans inner coating conductance measurement 6, appearance inspection
7, size inspection
8. The area of ​​GB 13042-91 also stipulates that the adhesion of the paint film shall be tested on the spray cans (performed in accordance with GB 1720), the impact strength of the paint film (per the implementation of GB 1732) and the luster of the paint film (per the implementation of ZBA 82001).
9, flammability test flammability test
2 Closed drum experiment
10. Packaging, transportation and storage of spray cans 1 The spray cans should be packed in corrugated boxes. The products should be arranged vertically. The products should be separated by cross-cutboard and tied with plastic strapping. 2 The product name and specifications should be printed on the packaging box. , quantity, external dimensions of the package, gross weight, manufacturer, date of manufacture.
3 The spray cans should be stored in a ventilated, dry, clean place, and can not be stressed. 4 Spray cans should be handled lightly during transport and use. It is strictly forbidden to throw to prevent collision and avoid rain, sun exposure and pollution.
Fifth, spray tank design points
1. Select the spray tank container and spray mechanism must consider the type of material and the shape of the atomization
2, the type of formula will determine the filling method
3, the atomization shape of the ejected matter mainly depends on the combination of the valve and the button switch
4. The spray tank design should fully consider the requirements and the nature of the contents to ensure the quality and performance of the spray. 1 The structural design of the spray tank must ensure that the container has a certain pressure resistance. 3 Metal spray cans should pay attention to the decoration and design to meet the consumption. Psychology 2 Valve and spray tank container mounting section is the center of gravity of the spray can design 4 Valve cover design
The third section of the new spray cans
One, plunger spray tank
Second, liner bag spray cans
1, Sepro can
2, Powr-flo can (Powr-flo can)
3, Kang spray (France Valois company)
4, CO2 pressure spray tank
5, compressed air spray tank
Third, "energy" spray cans
Fourth, elastic tube spray tank