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What is cosmetic plastic bottle? - Maypak

April 27, 2023

1. Different plastic materials


The commonly used type of cosmetic packaging is plastic packaging, which also includes: PP, PE, PS, PET, PETG, AS, ABS, acrylic, etc.


(1). PP



PP material is high polymer polypropylene, plastic is high molecular compound, non-toxic, harmless, no peculiar smell, good heat resistance, cold resistance, good chemical stability, chemical properties are stable when encountering strong acid and strong alkali Not easy to change.



Features: milky white translucent, lubricated, non-greasy; PP bottles are softer than PET, easier to pinch, and less transparent than PET, so some opaque shampoo bottles are more commonly used (easy to squeeze).


How to color PP materials: Use the masterbatch produced by a specialized manufacturer (a particle with a high color concentration composed of colorant, carrier resin, and dispersant). It has a good coloring effect, and it is produced in PP plastic During the production process, the color masterbatch is directly added to the product, and after stirring, it can enter the next process normally, and the finished product will have color


(2). PE



PE: Polyethylene. The material is basically opaque, the material will be softer, and it is not as smooth as PET.


Cosmetic applications: hoses, lotion bottles, caps, etc.


(3). PET


PET is polyethylene terephthalate, which belongs to thermoplastic polyester. It has a smooth and shiny surface, can resist friction, has good dimensional stability and high hardness, but it is not resistant to hot water soaking and alkali resistance. The material is environmentally friendly, with high barrier properties, light weight, unbreakable properties, chemical resistance, and strong transparency. It can be made into pearlescent, colored, magnetic white, and transparent. It is widely used in gel water.



Features: PET has high transparency, and the bottle body is soft and can be pinched but harder than PP.


(4). PETG


The transparency of PETG is better than that of PET, but it is not commonly used in China, the cost is high, the waste is high, and it can be formed once and cannot be recycled. PETG is used in various permanent daily necessities, such as cosmetic bottles, perfume bottles, pharmaceutical packaging containers and so on. Compared with PET, PETG has higher transparency, better chemical resistance, better oil resistance, and better weather resistance (yellowing) performance than PET. The procurement cost of PETG is 2-3 times that of PET.



(5). AS


AS: AS, also known as SAN, styrene acrylonitrile copolymer, has higher impact strength and excellent heat resistance, oil resistance and chemical corrosion resistance than polystyrene (PS). The hardness is not high, relatively brittle (there is a crisp sound when knocked), good transparency, and can be directly in contact with cosmetics and food. In ordinary lotion bottles and vacuum bottles, it is generally the material of the bottle body, and it can also be made into small-capacity ones. Cream jar. It is transparent. Cream bottle, powder case, eye shadow case.



AS, ABS: AS has better transparency than ABS, and better toughness.


(6). ABS



ABS: It belongs to engineering plastics, which is not environmentally friendly and has high hardness. It cannot be directly in contact with cosmetics and food. In acrylic cosmetic packaging materials, it is generally used for inner covers and shoulder covers. The color is yellowish or milky white.

Important Note: If the ABS packaging material will directly contact the material body, please note that there must be no alkane lubricating oil in the material body, because it will cause the ABS non-crystalline area to absorb and swell, become brittle, and crack.

(7). Acrylic


Acrylic: thick and hard, the most glass-like is acrylic.



Acrylic is made of injection molded bottle, which has poor chemical resistance. Generally, it cannot be filled directly with paste. It needs to be equipped with an inner liner to prevent the filling from being too full, so as to prevent the paste from entering between the liner and the acrylic bottle to avoid Cracks, high packaging requirements during transportation, because it looks particularly obvious after being scratched, has high permeability, and feels very thick on the upper wall, but the price is quite expensive.


2. Bottle process


Color:1. The color can be customized, usually the primary color is matte and magnetic white, or the effect of pearl powder is added. Although the bottle and cap are matched with the same color masterbatch, sometimes the colors shown are somewhat different due to the different materials used for the bottle and cap. 

2. PP and ABS bottles are usually made of solid colors, PETG and acrylic bottles are mostly made of transparent colors, which have a clear feeling, and the walls of acrylic bottles are mostly sprayed with colors, which can refract light and have a good effect.

Printing: There are ordinary ink and UV ink for silk screen printing. UV ink has better effect, glossy and three-dimensional effect. During production, you should make a plate to confirm the color, and the effect of silk screen printing on different materials will be different.


Hot stamping: hot stamping gold and silverand other processing techniques are different from printing gold powder, silver powder effect, hard material and smooth surface are more suitable for hot stamping, hot silver, soft surface hot stamping effect is not good, easy to fall off, hot stamping The luster of silver is better than printing gold and silver


Pump : according to the production process: A, electroplating pump / B, anodized aluminum pump / C, plastic pump


Cap: mostly PP material, also PS, ABC material and acrylic material


According to the structure, it can be divided into double-layer cover and single-layer cover:


Double-layer Cap: A, PP inner cover + PS and acrylic material outer Cap; B, PP inner Cap+ outer Cap PP, ABS material electroplating; C, PP inner Cap + anodized aluminum outer Cap; D, PP inner Cap+ PP or ABS fuel injection Cap.


Single-layer Cap: PP material is commonly used


Cap process: both sides of the Cap can be bronzing or silver, and sprayed with oil; the inner cCapof the double-layer Cap can be silk-screened with the logo, and the outer Cap can be transparent to show the effect. The outer Cap is made of anodized aluminum to strike the embossed logo.


3. Mold opening cost, order quantity, production cycle


Mold development cost: bottle blowing mold is $300-$700, injection mold is $1500-$4000, the stainless steel material for the mold is more expensive than the alloy material, but it is durable. How many molds are produced at a time depends on the production volume If the production volume is large, you can choose a four-out mold or a six-out mold, and the customer can decide by himself


Minimum order quantity: 10,000 pieces


Production cycle: about 15-20 days cycle.


Printing fee: usually the first screen printing screen fee or fixture fee is charged. The unit price of silk screen printing is generally $0.025/color to $0.035/color, the screen plate is $30-$60/style, and the fixture is about $20/piece.


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