Vacuum bottle is a major category of cosmetics packaging materials, the popular market vacuum bottle is composed of a cylinder into an ellipsoid container and a piston at the bottom. It is designed to use the retracting force of a spring to keep air out of the bottle, creating a vacuum, while using atmospheric pressure to push the piston at the bottom of the bottle forward. However, due to the spring force and atmospheric pressure can not give enough force, so the piston can not stick to the wall of the bottle too tightly, otherwise the piston will be too large resistance and unable to rise forward; On the other hand, if the piston is easy to move forward and leakage occurs easily, the vacuum bottle has a very high requirement on the manufacturer's professionalism. In this paper, we mainly describe the basic quality requirements of vacuum bottles:
One,Appearance quality requirements
1. Appearance: vacuum bottles and emulsion caps should be complete, smooth and clean, free from cracks, burrs, deformation, oil stains and shrinkage, with clear and full thread; Vacuum bottle, emulsion bottle bottle body should be complete, smooth, clean, regular, smooth, full screw thread, no burr, hole, no obvious scar, stain, deformation, mold line no obvious dislocation. Transparent bottle should be transparent and clear.
2, cleanliness: internal and external clean, no free pollution, no ink stains pollution.
3. Outer packing: the cartons shall not be dirty or damaged. The cartons shall be lined with plastic protective bags. Each carton shall be packed in fixed quantity, sealed with adhesive tape in the shape of "work", and shall not be mixed. The factory inspection report form is attached to each shipment, and the contents such as name, specification, quantity, production date and manufacturer must be clearly discernible.
Two, surface treatment and graphic printing requirements
1. Color difference: uniform color, in accordance with the specified (gu ding) color or within the color plate sealing sample range (fan wei).
2. Surface adhesion: paint, electroplate, gilt and print the appearance of vacuum bottles and emulsion bottles. Use 3M810 to test the printing and gilt (silver) parts of the rubber belt cover and smooth them so that there are no bubbles in the cover parts.
3. Printing and stamping (silver) : the font and pattern should be correct, clear and uniform (j n yun), without obvious deviation, dislocation or defect; Hot stamping (silver) should be complete, no leakage hot, dislocation, no obvious hot or serrated.
4. Wipe the gauze soaked in disinfectant alcohol back and forth on the printing part twice, without printing decolorization and hot stamping (silver) falling off.
Three,Product structure and combined installation requirements
1. Dimensional control: for all finished products assembled after cooling, the dimensional control shall be within the tolerance range and shall not affect the assembling function or hinder the packaging.
2, the outer cover and the inner cover should be assembled in place, no skew phenomenon or assembly is not in place.
3. The inner cover does not fall off when subjected to axial tension ≥30N.
4. The internal bottle and the external bottle should be clamped in place with appropriate degree of tightness; Assembly tension of the inner sleeve and outer bottle is ≥50N.
5. Inner and outer bottles shall not be combined with friction on the inner wall to prevent scratches.
6. The screw thread of cap and bottle body rotates smoothly without stuck.
7. Aluminum trioxide is assembled with the corresponding cap and bottle body by gluing, and the tension is ≥50N after 24H of dry consolidation.
8, the pump head press test spray feel to be smooth, do not have the phenomenon of obstruction. Cosmetics packaging material hardness is not high, when the more crisp percussion crisp sound, transparent color, and the background color blue can directly contact with cosmetics, food, in the ordinary emulsion bottle, vacuum bottle is generally.
9. The gasket will not fall off under a tension of no less than 1N.
10. After the specification outer cover is matched with the thread of the corresponding bottle body, the clearance is 0.1-0.8mm. Cosmetic packaging material glass bottle is mainly used in cosmetics: skin care products (cream, emulsion), perfume, essential oil, nail polish several categories of small capacity, more than 200ml capacity is rarely used in cosmetics.
Four,Product functional requirements
1, sealing test requirements: the Product (Product) container loading three-quarters of colored water, after sealing off cap, backwards into the vacuum leak detection instrument of blotting paper, dispatch pressure is 0.05 MPa + / - 0.01 MPa, the holding time is 5 minutes shall be no leakage phenomenon., vacuum bottle, lotion bottle in a vacuum leak tester - 0.04 MPa (305 MMHG column), the pressure for 5 minutes without leakage phenomenon.
2. Screw torque force: fix the assembled bottle or jar on the special fixture of the torque meter, rotate the cover by hand, and the data displayed on the torque meter shall prevail, so as to reach the required test force; The torque value corresponding to thread diameter shall comply with the provisions of the normative schedule (gu ding). The spiral teeth of vacuum bottle and emulsion bottle have no sliding teeth in the value of rotation torque.
3. Low-temperature test requirements: vacuum bottles and emulsion bottles filled with clear water (the particle size of insoluble matter should be no more than 0.002mm) shall be placed in the refrigerator at -10°C~-15°C, taken out after 24h, and recovered at room temperature for 2 hours. No rupture, deformation, discoloration, paste leakage, leakage and other phenomena shall be detected.
4. Requirements for high temperature test: vacuum bottles and emulsion bottles filled with clear water (the particle size of insoluble matter should be no more than 0.002mm) shall be placed in an incubator at +50°C±2°C, taken out after 24h, and recovered at room temperature for 2 hours. No rupture, deformation, discoloration, paste leakage, leakage and other phenomena shall be tested.
5, plastic containers intensity (strength) : plastic container under the room temperature is 20 ° C + 5 ° C, filled with water from 1.0 1 m high free fall, in the cement ground, no leakage, seepage phenomenon; P
P, PE
T, PET -
G, SA
The material of N and PMMA is allowed to break in appearance by 15% after passing the fall test (TestMeasure) without any influence in function. (PMMA emulsion bottle this accident).
6. Squirt volume, volume and first liquid: fill the bottle with 3/4 colored water or solvent, lock the pump head and bottle teeth, press the pump head to produce liquid in 3-9 times, and squirt volume and volume shall be within the set requirements.
(1) amount of ejection: place the measuring cup on the electronic scale smoothly, and spray liquid into the container after returning to zero, so as to eject liquid weight ÷ the number of ejections = the amount of ejections; The deviation of ejection volume is allowed to be ±15% in a single time, and the deviation of average is allowed to be 5-10%. (the amount of spray shall be based on the type of pump selected for the customer's sealing sample or the specific requirements of the customer).
(2) bottle capacity: place the product to be tested on the electronic scale steadily, pour water into the container after returning to zero, and take the data displayed on the electronic scale as the test volume. The dispenser of emulsion pump is divided into two types, namely, zap type and screw type, which can be divided into spray, foundation cream, emulsion pump, air mist valve and vacuum bottle. The test data must conform to the design requirements.
(3) number of starting sprays: the bottle is filled with 3/4 colored water or emulsion, and the pump head and the bottle locking teeth shall be pressed on the pump head cap with force. The first starting sprays shall not exceed 8 times (colored water) or 10 times (emulsion), or shall be carried out according to the specific evaluation standards by referring to the sealed sample.
