Plastic bottles are mainly made of materials such as polyethylene or polypropylene and added with a variety of organic solvents. Plastic bottles are widely used as raw materials of polyester (PET), polyethylene (PE), and polypropylene (PP). After adding corresponding organic solvents, they are heated at high temperatures and then blow molded, extruded, or injection molded through plastic molds. Plastic container.
Generalized plastic bottles are mainly used for liquid or solid disposable plastic packaging containers such as beverages, food, pickles, cosmetics, and agricultural and veterinary drugs. Plastic bottles are not easily broken, low cost, high transparency, and food-grade raw materials.
Introduction of plastic bottles for cosmetic packaging materials
1. The material of cosmetic plastic bottles is usually PP, PE, K material, AS, ABS, acrylic, PET, etc.
2. Generally used in cosmetics containers with thicker walls, cream bottles, bottle caps, stoppers, gaskets, pump heads, and dust covers are injection molded; PET blow molding is two-step molding, tube embryo is injection molding, and the finished product is packaged For blowing. Others, such as emulsion bottles and washing bottles with thin container walls, are blown bottles.
3. PET material is an environmentally friendly material with high barrier properties, light weight, non-breaking characteristics, chemical resistance, and strong transparency. It can be made into pearlescent, colored, magnetic white, and transparent. It is widely used in gel water. The bottle mouth is generally standard 16#, 18#, 22#, 24# caliber, which can be used with a pump head.
4. Acrylic is made of injection molding bottle, which has poor chemical resistance. Generally, it cannot be directly filled with paste. It needs to be blocked by an inner liner. The filling is not easy to be too full to prevent the paste from entering between the liner and the acrylic bottle to avoid cracks. , The packaging requirements are high during transportation. It looks particularly obvious after scratches, has high permeability, and the sensory upper wall is extraordinarily thick, but the price is quite expensive.
5. AS, ABS: AS has better transparency than ABS and better toughness.
6. Mold development costs: blowing molds range from 1500 yuan to 4000 yuan, injection molds range from 8000 yuan to 20,000 yuan. Stainless steel molds are more expensive than alloy materials, but they are durable. Several molds can be produced at a time. The demand for production volume, if the production volume is large, you can choose a mold with four or six molds, and the customer can decide by himself.
7. The order quantity is generally 30,000 to 10,000, and the color can be customized. Usually the primary color is frosted and magnetic white, or the pearl powder effect is added. Although the bottle and cap are matched with the same color master, sometimes it is due to the bottle and cap. The materials used are different, and the colors displayed are somewhat different.
8. The screen printing has ordinary ink and UV ink. UV ink has better effect, gloss and three-dimensional effect. It should be printed to confirm the color during production. The effect of screen printing on different materials will be different.
9. The processing technology of bronzing and silver bronzing is different from that of printing gold powder and silver powder. The hard material and smooth surface are more suitable for bronzing and silver bronzing. The soft surface is not good for bronzing effect, easy to fall off, and the gloss of bronzing silver Degree is better than printing gold and silver.
10. Bottle caps are generally equipped with inner gaskets, pull caps, and inner plugs. Very few are equipped with small spoons or droppers. This is mainly due to its tightness and ease of use.
11. The production cycle is relatively moderate, about 15 days. The silk-screened cylindrical bottle is calculated as a single color, and the flat bottle or special-shaped bottle is calculated as two-color or multi-color. Usually, the first silk-screening fee or fixture fee is charged. The unit price is generally 0.1 yuan/color order to 0.15 yuan/color order, the screen version is 100 yuan-200 yuan/model, and the fixture is about 50 yuan/piece.
(1) Cream bottle + outer cover (production machine: injection molding machine)
PP and PETG materials commonly used in injection cream bottles (new materials, transparency, no need to add an inner liner, but there are also double layers, to save costs), acrylic (this product has good transparency, generally add an inner liner, not directly Paste, the bottle body will crack), ABS material (this material is used for electroplating accessories, easy to color), the cover is mostly PP material, the inner cover is PP+ the outer cover is acrylic or the outer cover of electroplating or the outer cover of anodized aluminum or the oil spray cover
Craftsmanship:
Bottle body: PP and ABS bottles are made of solid colors, PETG materials and acrylic bottles are mostly transparent colors, with a sense of transparency, acrylic bottle walls are mostly spray-colored, which can refract light and have a good effect.
Printing: The bottle body can be silk-screened and hot-stamped, and hot-silvered. The inner cover of the double-layer cover can be silk-screened, and the outer cover is transparent and shows the effect. The outer cover is made of anodized aluminum, which can strike a convex logo.
(2) Vacuum bottle + pump head cover (essence bottle, toner bottle, lotion bottle), commonly used AS material for injection vacuum bottle body, can directly contact the paste, no straw, vacuum design) + pump head (plating) cover ( Transparent and solid color)
Production process: The transparent color of the airless bottle is more useful, and the solid color is less used.
Printing: The bottle body can be silk-screened and hot-stamped, and hot-silvered.
(3) Bottle blowing
(essence bottle or lotion bottle, toner bottle) (production machine: blow molding machine)
A. Understand the blowing process
According to the plastic material, it can be divided into PE blowing (softer, more solid colors, one-time molding), PP blowing (harder, more solid colors, one-time molding), PET blowing (good transparency, more use for toner and hair products) , It is an environmentally friendly material, two moldings), PETG blowing (brightness is better than PET, but not commonly used in China, high cost, high cost, one molding, non-recyclable materials) less.
Combination form: blow bottle + inner stopper (commonly used for PP and PE materials) + outer cover (commonly used for PP, ABS and acrylic, and also for electroplating, and anodized aluminum, and oil spray toner) or pump head cover (usually used for essence and lotion) ), + Qianqiu cover + flip cover (Flip cover and Qianqiu cover are mostly used in large-circulation daily chemical lines).
B. Bottle blowing production process:
Bottle body: PP and PE bottles use more solid colors, PETG, PET, PVC materials mostly use transparent colors, or colored transparency, with a sense of transparency, but less solid colors are used. PET bottles can also be sprayed with colors.
Printing: silk screen and hot stamping, hot silver.
(4) Pump head
1. Dispensers are divided into two types: tie-type and screw-type. In terms of function, they are divided into spray, foundation cream, lotion pump, aerosol valve, and airless bottle.
2. The size of the pump head is determined by the caliber of the matching bottle. The spray specification is 12.5mm-24mm, and the water output is 0.1ml/time—0.2ml/time. It is generally used for perfume, gel water and other product packaging. The caliber The length of the same tube can be determined according to the height of the bottle.
3. The lotion pump has a wide range of 16ml to 38ml, and the water output is 0.28ml/time-3.1ml/time. It is generally used for creams and washing products.
4. Airless bottles are usually cylindrical, with specifications ranging from 15ml to 50ml, and some are 100ml. The overall capacity is small. It relies on the principle of atmospheric pressure to avoid pollution caused by cosmetics during use. Vacuum bottles have anodized aluminum, plastic plating and colored Plastic, the price is more expensive than other general containers, and the general order quantity is not high.
5. PP materials are widely used, (production machine: injection molding machine) the outer ring also uses anodized aluminum sleeve, and also uses an electroplating process. Gold and silver can also be bronzed.
(1), according to the function of the bottle body:
A, the pump head of the vacuum bottle, without a straw, + outer cover. B. The pump head of an ordinary bottle requires a suction tube. + Cover or no cover.
(2), according to the function of the pump head
A, lotion pump head (suitable for lotion-like contents, such as lotion, shower gel, shampoo). B. Spray pump head (suitable for water-based content, such as spray, toner).
3. According to the appearance
A, pump head with cover, the outer cover plays a protective role. (Partially used for products with relatively small volume) within 100ml. B. The pump head without cover has a special design and can be locked so that the contents will not flow out due to squeezing, which is protective and easy to carry. lower the cost. (Partially use products with a comparative capacity.) Above 100ml, most of the pump heads of the shower gel and shampoo of the daily chemical line are designed without an outer cover.
4. According to the production process:
A, electroplating pump head; B, anodized aluminum pump head; C, plastic pump head.
(5) Outer cover
PP materials are mostly used, PS, ABC materials and acrylic materials are also available. (Production machine: injection molding machine, divided into double-layer cover according to structure:
A, PP inner cover + PS and acrylic outer cover; B, PP inner cover + outer cover PP, ABS material electroplating; C, PP inner cover + anodized aluminum outer cover; D, PP inner cover + PP or ABS injection cover.
Single layer cover: PP material commonly used
Process: The sides of the cover can be bronzed or silver, and sprayed with oil
The inner cover of the double-layer cover can be silk-screened with logo, and the outer cover is transparent and shows the effect. The outer cover is made of anodized aluminum, which can strike a convex logo.
