1. Major categories of plastic materials

1. AS: The hardness is not high, it is relatively brittle (there is a crisp sound when knocking), transparent color, and the background color is blue. It can directly contact with cosmetics and food. In ordinary lotion bottles, airless bottles are generally bottle bodies It can also make small-capacity cream bottles. It is transparent. To

2. ABS: belongs to engineering plastics, not environmentally friendly, with 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. To

3. PP, PE: 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 whitish and translucent. According to different molecular structures, three different degrees of hardness and softness can be achieved. To

4. PET: It 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. The PET material is soft and its natural color is transparent. To

5. PCTA and PETG: environmentally friendly materials that can be directly contacted with cosmetics and food. They are the main materials for filling organic skin care products. They are soft and transparent. PCTA and PETG are soft and easy to scratch. And it is not often used to print pictures. To

6. Acrylic: The material is hard, transparent, and the background color is white. In order to maintain a transparent texture, acrylic is often sprayed inside the outer bottle or painted during injection molding. To

2. Types of packaging bottles

1. Airless bottle: cap, shoulder sleeve, vacuum pump, piston. Rely on air pressure to use. The sprinklers matched have a chicken beak tip (either all plastic or anodized aluminum), and the duckbill flat head is covered with a layer of plastic.

2. Lotion bottle: consists of lid, shoulder sleeve, lotion pump and piston. Mostly there are hoses inside. Mostly made of outer acrylic and inner PP. The cover is made of outer acrylic and inner ABS. To

3. Perfume bottle: the internal composition is glass and aluminum outside (rotating and non-rotating according to the cap) PP bottle (small injection full of PP) glass drip irrigation Perfume bottle liner is mostly glass and PP. Use glass for large-capacity, because the storage time is longer, and PP is suitable for short-term storage of small-capacity. Most PCTA and PETG do not have perfume. To

4. Cream bottle: There are outer cover, inner cover, outer bottle and inner liner. External acrylic, internal PP material. The lid is made of outer acrylic and inner ABS with a layer of PP gasket. The inner ceramic, PP outer anodized aluminum, the cover outer anodized aluminum, PP inner ABS plus a layer of PP gasket. Full PP bottle with a layer of PP gasket inside. External ABS internal PP. There is a layer of PP gasket. To

5. Blow-molded bottles: mostly made of PET. There are three types of lids: Qianqiu lid, flip lid and screw lid. Blow molding is the direct blowing of the preform. The characteristic is that there is a bump on the bottom of the bottle. It is brighter in light. To

6. Blow-injection bottle: The material is mostly PP or PE. There are three types of lids: Qianqiu lid, flip lid and screw lid. Blow-injection bottle is a process that combines blow-injection and blow-molding, and only requires one mold. The characteristic is that there is an adhesive line at the bottom of the bottle. 7. Aluminum-plastic hose: the innermost one is made of PE material and the outside is aluminum packaging. And for offset printing. After cutting, roll up. According to the tube head, it is divided into round tube, flat tube and oval tube. Price: round tube<ellipse tube<flat tube 8. All plastic hose: all are PE material, and the hose is first pulled out before cutting offset printing, silk screen printing and hot stamping. According to the tube head, it is divided into round tube, flat tube and oval tube. Price: round tube<ellipse tube<flat tube.

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3. Nozzle, lotion pump, hand washing pump and length measurement

1. Nozzle: bayonet (half bayonet aluminum, full bayonet aluminum), the screw is all plastic, but some are covered with a layer of aluminum cover and a layer of anodized aluminum. To

2. Lotion pump: It is divided into vacuum and suction tube, both of which are screw ports. The screw cap and head cap can also be covered with a layer of anodized aluminum. Divided into two kinds of sharp bill and duck bill. To

3. Hand-washing pumps: the caliber is too large and they are all screw ports. The screw cap and head cap can also be covered with a layer of anodized aluminum. Generally, steps are threaded, and those without steps are left and right knobs. Length measurement: sub-pipette length (from gasket to hose end or FBOG length). Exposed length. And the length measured under the big hood (equal to the length from the bottle shoulder to the bottle bottom). Specification classification: It mainly depends on the product inner diameter (the inner diameter is the innermost diameter of the pump) or the height of the large circle. Nozzle: 15/18/20 MM all plastic is also divided into 18/20/24 Lotion pump: 18/20/24 MM Hand washing pump: 24/28/32(33) MM Large circle height: 400/410/415 (only The simple specification code is not the actual height) Note: The specification classification expression is such as: lotion pump: 24/415 Measurement measurement method: (actually the dose of liquid sprayed by the nozzle) There are two methods: peeling measurement method and absolute value measurement method . The error is within 0.02g. The size of the pump body is also used to distinguish the measurement. ...

Four. Coloring process

1. Anodized aluminum: aluminum exterior, just one layer wrapped on the inner plastic. To

2. Electroplating (UV): The effect is brighter than the spray image. To

3. Spraying: Compared with electroplating, the color is dull. Frosting: A layer of frosted texture. Spray outside the inner bottle: spray on the outside of the inner bottle. There is a clear gap between the outer bottle and the outer bottle. From the side, the spray pattern is small. Inner spraying of outer bottle: The spraying is carried out on the inside of the outer bottle, which looks larger from the outside. The area is small when viewed from the vertical plane. And there is no gap with the inner bottle. To

4. Brushed gold and silver: It is actually a film, and you can find the gaps in the bottle through careful observation. To

5. Secondary oxidation: secondary oxidation is performed on the original oxide layer, so as to achieve a pattern with a dull surface covering the glossy surface or a pattern with a glossy surface appearing on the dull surface. Mostly used for logo production. To

6. Injection color: Toner is added to the raw material when the product is injected. The process is relatively cheap. Pearl powder can also be added, or cornstarch can be added to make the transparent color of PET become opaque (add some toner for color mixing). The generation of water ripples is related to the amount of pearl powder added. To

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Five. Printing process

1. Silk screen: The effect after printing has obvious concavity and convexity. Because it is a layer of ink. Silk-screened regular bottles (cylindrical type) can be printed at one time