Process inspection standards for cosmetics packaging
Definition of cosmetic packaging materials: All materials except for the contents of a complete cosmetic product are collectively referred to as packaging materials.
Classification of cosmetic packaging materials: inner packaging materials and outsourcing materials
Inner packaging materials: materials that form a closed space, such as bottles, caps, plugs, gaskets, etc. that are in direct contact with the contents.
Outsourcing materials: other materials used for decoration, protection of contents, and inner packaging materials.
Because there is no authoritative and accurate definition of internal packaging materials and external packaging materials, the above is a summary of the definitions in the editor, which is easy to learn. Please leave a message for correction.
Inner packaging material container
Containers are the main packaging materials in the cosmetics field. At the same time, the core components such as pump heads, sprays, and bottle caps for the containers are also plastics. Therefore, there is an indissoluble bond between cosmetics and plastics. Introduce several commonly used types of plastics and make a small science popularization:
ABS is an engineering plastic, which is not environmentally friendly, has high hardness, and cannot be directly contacted with cosmetics and food. In acrylic cosmetic packaging materials, it is generally the material of the inner cover and shoulder sleeve. The color is yellow or milky white.
PP and PE are environmentally friendly materials, which can be directly contacted with cosmetics and food. They are the main materials for filling organic skin care products. The materials are whitish and translucent. According to different molecular structures, it can reach three different degrees of softness and hardness.
PET is an environmentally friendly material that can be directly contacted with cosmetics and food. It is the main material for filling organic skin care products. PET is soft and transparent in nature.
PCTA and PETG are environmentally friendly materials that can be directly contacted with cosmetics and food. They are the main materials for filling organic skin care products. The materials are soft and transparent. PCTA and PETG are soft and easy to scratch. And it is not often used to spray pictures and use more printing.
AS is not high in hardness, brittle (a crisp sound when knocked), transparent color, and the background color is blue, which can be directly contacted with cosmetics and food. In ordinary lotion bottles and airless bottles, they are generally the material of the bottle body. Small-capacity cream bottles can also be made. It is transparent.
The material is hard, transparent, and the background color is whitish. In order to maintain a transparent texture, acrylic is often sprayed inside the outer bottle or painted during injection molding.
According to the packaging form and material variety of cosmetics, it can be divided into:
a. Bottles (including plastic bottles, glass bottles, etc.);
b. Cover [including outer cover, inner cover, (plug, pad, film), etc.];
c. Bags (including paper bags, plastic bags, composite bags);
d. Hose (including plastic hose, composite hose, metal hose, etc.);
e. Box (including plastic cartons, plastic boxes, metal boxes, etc.);
f. Spray cans (including pressure-resistant aluminum cans, iron cans, etc.);
g. Ingot tube (including lipstick tube, foundation tube, mascara tube, etc.);
h. Makeup pen
i. Nozzle (including pneumatic type and pump type);
j. Outer box (including flower box, plastic seal, middle box, transportation packaging, etc.).
Basic requirements for packaging materials
One, container and container matching category
The body of the bottle should be stable, the surface should be smooth, and the thickness of the bottle wall should be basically uniform, without obvious scars, deformation, and no cold bursts and cracks. The bottle mouth should be straight and smooth, no burrs (burrs) should be used, and the thread and bayonet fitting structure should be intact and straight. The fit between the bottle and the cap should be tight, with no slippery teeth, loosening, and no leakage. The inside and outside of the bottle should be clean.
The body of the hose should be smooth, tidy, uniform in thickness, without obvious scratches, and uniform in color. The sealing of the hose should be firm and correct, and there should be no openings or wrinkles (except for the normal indentation of the mold). The composite membrane of the hose should not float.
The cover is divided into: PP material, ABS material, sarin material, PTCG material, K material, anodized aluminum, etc. Different materials are judged by experience such as touch, appearance, and falling rebound sound, and the disinfection methods are different.
Inner cover: The inner cover should be complete, smooth, clean and not deformed. The inner cap should fit well with the bottle and outer cap. The inner cover should not leak out.
Outer cover: The outer cover should be straight, smooth, free from broken, cracked, burrs (burrs). The color of the outer cover should be uniform. The thread matching structure of the outer cover should be intact.
The color of the outer cover with anodized aluminum or bronzing should be uniform. The outer cover of the clamshell type should be flipped up flexibly, and the connection part should not be broken. The fit between the cap and the bottle should be tight, without slippery teeth or looseness.
4. Spray cans.
The tank body is flat, no rust spots, smooth welding seam, no obvious scratches, concave tank phenomenon, and the color should be uniform. The roll mouth of the spray can should be smooth and free of wrinkles, cracks and deformation. The lid of the spray can shall meet the requirements of 5.3.2.
The nozzle should be upright, clean and free from damage and cracks. The assembly parts of the nozzle should be intact to ensure the smooth flow of the spray at night.
2. The basic quality requirements of flexible packaging.
No obvious wrinkles, scratches, air bubbles should be applied to the bag. The color of the bag should be uniform. The sealing of the bag should be firm, and there should be no openings, perforations, or leakage (paste). The composite bag should be firm and evenly coated.
2. Plastic package
The plastic seal should be firmly bonded without cracking. The surface of the plastic package should be clean and free from damage. There is no wrong installation, missing installation, or upside-down installation in the plastic package.
3. The basic requirements of cosmetic packaging materials.
1. Ingot tube
The tube body of the ingot tube should be straight, smooth, free of cracks, burrs (burrs), no obvious scratches, and uniform color. The components of the ingot tube should be tight and appropriate to ensure that the contents can be screwed out or pushed out normally.
2. Makeup pen
The barrel and sleeve of the cosmetic pen should be smooth, straight, glue-free, and the paint film should not be cracked. The barrel of the makeup pen and the pen cover should be tight and tight. The color of the makeup pen should be uniform.
Fourth, the basic quality requirements of the outer packaging.
The surface of the box should be smooth and straight, and there should be no obvious scratches, burrs (burrs), severe collapse and damage. The tightness of the opening of the box should be appropriate. When taking the flower box, do not peel it off with your fingers, so as to pinch the edge of the lid, and the bottom does not fall down as qualified. The mirror inside the box, the contents and the box should be firmly pasted, the mirror image should be good, and there should be no scratches or damage to the bottom of the box.
2. Printing and labeling.
The patterns and handwriting printed on cosmetics packaging should be neat, clear, not easy to fall off, and uniform in color. The labels of cosmetic packaging should not be mis-posted, missed, or upside-down, and the paste should be firm. The labeling requirements shall be in accordance with the provisions of GB 5296.3.
3. Flower box.
The flower box should be packaged tightly with the middle box. The flower box should be clean, straight and flat, and the box cover should be well covered, without wrinkles, missing edges, or missing corners. The bonding part of the flower box should be firmly pasted, without traces of pasting, cracking and mutual adhesion. The product has no wrong installation, missing installation, or upside-down installation.
4. Medium box.
The middle box should be tightly packaged with the flower box. The middle box should be clean, straight and flat, and the box cover should be closed. The bonding part of the middle box should be firmly pasted, without traces of pasting, cracking and mutual adhesion. There is no wrong installation, missing installation, or upside-down installation. The label of the middle box shall be correct, clean and complete, and shall indicate the product name, specification, quantity of the box and the name of the manufacturer as required.
5. Requirements for trademarks, manuals, box head stickers and certificates of conformity in the packaging.
1) Printed trademarks should have correct patterns, distinct colors, and clear and firm writing.
2) The trademark must be firmly pasted, and must not be skewed, missed, inverted, or incorrectly pasted. After being pasted, the corners and edges will not be warped.
3) The printing pattern of the manual is neat and the handwriting is clear.
4) Printed writing and patterns on the box head (sticker) are clear.
5) The printed handwriting and pattern of the certificate are clear, and there are signs such as the name of the factory and the code of the inspector.
6) The implemented standard number should be marked on the product or its instructions and packaging.
7) Mark the production date and shelf life or production batch number and expiration date.
8) The transportation packaging should be neat, correct, smooth, and tightly sealed; the product should be free of wrong, missing, or upside-down packaging.
Problems that are easy to occur in the acceptance of packaging materials
In summary, there are mainly two aspects:
1. Process issues
1. The color printing accuracy of the inner bag of the mask is not enough and the color is incorrect
2. The layout of the inner bag is inconsistent with the design draft (the rounded corners at the edges become right angles)
3. The glass bottle is painted off and the hot stamping is out of place
4. Scratches in the glass bottle during transportation; the hot stamping on the frosted glass bottle rubs against the bottle body, and the hot stamping is scratched
5. The bottle cap is loose, the pump head is tightened, and the gap between the pump head and the bottle shoulder is too large
6. Printing mistakes (trademark printing wrong, name printing wrong, weight printing wrong, etc.)
7. The surface of the box is not flat
8. The box set is deformed, the sticking is not strong, and there are traces of glue on the box surface
9. Color box printing, paste gold at the hot stamping
10. Wrong hose caliber (need 3mm, finished product is 5mm)
11. The color of the packaging material is too different (compare each batch of packaging)
12. The color of the electric eye on the package can be changed by the manufacturer at will (the colored dot in the middle of the end of the toothpaste tube)
13. The hose printing icon is deformed
14. Glue adhesion on the handbag
15. Incomplete supporting packaging
16. The packaging surface is dirty, with dust, glue, handprints, etc.
Second, the material problem
1. Insufficient internal card support
2. The glass bottle is not bright enough
3. Insufficient number of composite hoses
4. The thickness of the inner bag of the mask is not enough
5. The buckle of the inner cap of the bottle is too soft and deformed during the tightening process
6. Some plastic bottles are not resistant to high temperature, deformed or become brittle
7. Plastic bottles become brittle under light
The above is just a list of common problems, and there are many other problems. Customers need to control the packaging materials. For example, there should be no pitting on the front of the bottle, some customers can accept it, and the acceptance staff needs to grasp it. .
Inspection methods and standards for various packaging materials
[For reference only, the specific internal control standards of the company shall prevail]
First, ensure that the materials used must be hygienic and non-toxic:
All materials should have a certain degree of chemical stability, can not interact with the products it contains, and are not easy to change color and fade under light. New product development packaging materials are green and environmentally friendly materials, and are tested for compatibility with the material body to ensure that the material body will not deteriorate, delamination, color discoloration and thinning; for example: mask cloth, air cushion sponge, gradual special craft bottle, etc. .
Second, the inspection standards of different packaging materials:
Pump head, spray head
Color box (paper)
Aluminum foil bag, light aluminum
Third, the basic elements of functional judgment:
For cosmetics, the functional test of packaging materials is also one of the necessary tests in production, which must be strictly checked, such as:
Comparison of packaging materials and samples
Perform a detailed comparison check with the standard sample under non-direct sunlight.
Take the bottle/tube that matches the stopper, cap, pump head and spray head, fill in an appropriate amount of water or product, tighten the cover stopper, pump head and spray head, and observe their tightness. To prevent the leakage of the product from deteriorating due to the poor sealing performance of the product, the test methods are as follows:
a. Put it upside down at room temperature, put it on the side, and check after 24h;
b. Put it upside down at room temperature, squeeze the bottle/tube firmly with your fingers for one minute and check.
c. Use a sealing tester to test. Under negative pressure, between 0.04MPa and 0.06MPa, the test time is within one to five minutes.
Bottle mouth complete
Fitting with accessories and gap deviation
For example, the bottle cap is loose, the pump head is tightened, the gap between the pump head and the bottle shoulder is too large, and other technological problems should be limited within the approved value range.
Selection of special packaging materials and determination of sealing effect
For example, oily packaging materials and water-based packaging materials are generally used in narrow-mouthed bottles, and pump heads should be used. If the lid is equipped with an inner plug and a sealing aluminum film sticker, it can increase the tightness and reduce the leakage of the material.
Allowable error of bottle weight
Use a balance weighing 0.1g to measure the weight of the sample and compare it with the approved value.
There are also barrier performance testing, tensile strength testing, heat sealing strength testing, impact resistance testing, solvent residue testing, printing quality testing, etc. In short, as a 'supporting role' packaging materials, these seemingly cumbersome testing links, But it is the key to ensuring the quality and safety of cosmetics.