1. The classification of the powder box. Many types of powder, generally classified as follows

Pressed powder
W / D (wet and dry)
Blush Blusher and Eyeshadow
Sealed powder
Travel powder box (powder, blush, eye shadow, etc.)

Second, the composition of the powder box

The box is usually composed of the cover, the bottom, the inner seat, the former, the lens, the aluminum plate, the new nail and other related components.

Three parts of the selection of materials

1. ABS is the most commonly used material for ABS / ABS + SAN / SAN, PCTA, PMMA, PP, etc. can be used, ABS generally need to paint the parts on the process, SAN for general transparent parts, PMMA general use In the thick-walled transparent parts (PMMA intolerance to alcohol) PCTA is generally used for high chemical resistance of the powder box, PP is generally used in the sealed requirements of the powder box.

Structure and assembly methods

Structure
Cover the end of the hook type
Push-down (including flipping forward)
No front (by the new bump to achieve the cover function)
Magnet, now more and more customers are using this structure
Withdrawable

2. Assembly method

A. cover and lens:
Point hot melt adhesive, for the lens and the cover with uneven / shaped powder box
Paste double-sided adhesive, for the lens and the cover with the surface comparison of flat powder box (this structure can also point hot melt assembly)after the lens cutting edge.

B. Inside and bottom:
Card, inside and bottom to do card hook to engage
Ultrasound, inside / bottom to do the ultrasound line to assemble
C. Former assembly
Directly with the bottom of the card
Stuck between the inner and bottom
D. Bottom assembly
Cover the bottom of the nail, the conventional assembly
Cover the end of a pillar and long convex two, as shown below, this structure can not guarantee that the lid can stay at any angle。

5. Conventional standards for toner cartridges

Open the box

The purpose is to determine the size of the force required to close a powder container, so that guests do not let the guests feel that the lid is too loose or too tight.

Generally depending on the product size and open the way to determine the size of the box to open the standard, EL has it a common standard for reference, as follows:

Card hook / button / flip standard: 0.5 to 2.0 lbs / 0.227 ~ 0.90kgf

The magnet type is: 0.5 to 1.5 lbs / 0.227 to 0.68 kgf

   The standard for withdrawal is: 1.5 to 4.7 lbs / 0.680 to 2.13 kgf

2. Component separation force:

Purpose To determine the size of the force required to separate a component from another component to ensure that the components are not separated during normal use

General parts of the separation force standard is> 4.5kgf, if not easy to measure, we can take the drop test to confirm

3. Drop test:

The general drop test for 1M fell to the cement floor / steel plate (EL standard for 0.76M) to see if the powder box is broken and the lens is intact, AS / PMMA and other brittle materials this requirement is more difficult to reach

4. Post-strength test

The purpose is to continue to protect the back when the new is not broken

5. Decorative adhesion:

The purpose is to ensure that the normal use of decoration does not fall off

General tape testing, testing tape with 3M600, 3M810, 3M616, NICHIBAN and other root different customer requirements (EL with 3M810, L'OREAL with 3M616), and for bronzing / printing only tape testing, painting (plating, cover, etc. ) To be tested after tape test

6. Light aging test:

The purpose is to prevent the product from exposure to sunlight / on the showcase when the discoloration is not excessive

Generally do not change color / slightly change OK, need to confirm with the guests

7. Cover the bottom gap and dislocation

The general standard for ≦ 0.3mm, for different sizes of the powder box will have different standards

EL standard

After the button to the front button hook distance ≤ 76.2mm of the powder: gap and dislocation ≦ 0.25mm

After the button to the front button hook distance> 76.2mm of the powder box: gap and dislocation ≦ 0.38mm

8. Size control

The size of the powder box for the shape of the length and breadth and the size of the powder hole, length and width dimensions generally tolerances of +/- 0.5, disk hole size tolerance is generally +/- 0.13

6. Note the design of the powder box

1. With the gap
Cover the bottom with the gap (A), without coating the unilateral take 0.15, to paint to take 0.25
After opening and closing the opening (B, C) rotation clearance can not <0.3mm
(D, E), the front button and the inner or bottom of the gap in the rotation can not <0.3mm
Flip forward before the bottom of the bottom and the bottom of the gap can not be less than 0.35mm
Inside and bottom with the gap, whether it is card or ultrasound, unilateral gap of not less than 0.10,
2. Component strength
(AS, PS, PMMA, etc.), not less than 1.5, if the brittle material (AS, PS, PMMA, etc.) is not less than 1.5; if the brittle material (AS, PS, PMMA, etc.) 1.8, if the product to be plated or covered with light, the pinhole thickness to improve a grade, that is, ABS by AS
Front button strength, for better impact of the material, the former button thickness of not less than 0.8, if the brittle material is not less than 1
In addition to PL surface and the face, the product as far as possible fillet, so not only improve the strength of the component is also conducive to filling
3. Disk hole design
Disk hole shape and depth size must be greater than the nominal size of the pan, the general size of the disk hole than the plate about 0.5mm, but this also depends on the specific requirements of the guests
R angle, the R angle of the cartridge hole must be less than the R angle of the pan.

4. lens design

All the lenses must be lower than the edge of the lid, with hot melt adhesive mirror, the depth of the frame at least deeper than the thickness of the mirror 0.5mm, with double-sided adhesive, then at least 0.2mm deep, if the frame to be painted depth also requires 0.2mm The
Mirror and frame around the left and right about 0.2mm gap, the size of the mirror to take the whole value.
The gap between the frame surface and the inner surface is at least 0.4mm.
5. gate position
The gates of the cartridge parts are generally in the rear or center gate
After the new gate is generally the side gate and latent gate, latent gate has not affect the appearance of the product, without post-processing, etc., but not suitable for toughness of the material (such as PCTA, etc.)
Central gate generally need to do a pit in the gate, the size of the depth generally take 0.5 to 0.7 (as the fence at the gate), the diameter of the general take 3 to 5 (try to take a large value)
This has two advantages: one is not cut gate burr, the second is to buffer the injection pressure, not the stress generated in the gate and affect the quality of finished products.
6. After the needle pinhole design: pinhole need to do the guide section, to avoid pinning pinhole break, in order to avoid nail misalignment, all powder box as much as possible to fight double

Normal Defected and improvement way:

1. Opening force is too large / small

Semi-finished product size instability, adjust the size of semi-finished products, strengthen quality control
Ultrasound caused by size changes, adjust the ultrasound machine
Spinning, adjust the nailing machine
Packaging is not good, the product put a period of time after the opening force becomes smaller, the product under the stress caused by fatigue, the powder box to the hole board, hole hole hole depth is greater than the total product height
2. open laugh
Semi-finished products deformation, adjust the semi-finished products, strengthen the quality control
Ultrasound effects, such as the inside / frame without sound in place, adjust the ultrasound machine
Dislocation
Semi-finished pinhole skew, check the replacement mold needle, strengthen the quality control
Semi-finished product size exceeded, adjust the size of semi-finished products, strengthen the quality control

Dispensing leaks, increase the dispensing device, do not dispensing the lens is not assembled

Glue too little, increase the amount of dispensing, dispensing volume to be set the number of standards

Dispensing / paste double-sided adhesive without pressure after the pressure (general hot melt adhesive / double-sided adhesive are pressure-sensitive adhesive), the lens assembly must be pressed

Lens size is large / frame size is too small to cause the lens is not in place, the lens size to do small

5. Post-New Zealand loose / tight

After the new nail size is wrong, replace the appropriate after the new nail

Semi-finished pinhole size of different sizes, check the replacement of mold needles, to strengthen quality control

Do not adjust the nail, adjust the nailing machine

Packaging is not good, the product put some time after the change will become loose, the product under the conditions of stress caused by fatigue, the powder box to the hole board, hole hole hole is greater than the total height

6. product surface injury

Ultrasound is not adjusted well, too heavy, adjust the ultrasound machine

JUMBO Techinical Team