Knowledge of inner packaging materials: cosmetic glass bottles

There is a very detailed article introducing the knowledge of cosmetics OEM outer packaging materials in the previous article, but our company is mainly engaged in the inner packaging of cosmetics, so this time I specifically find some knowledge points of packaging materials to share with you. There are actually many subcategories of inner packaging materials. If divided by material: PP, ABS, glass, PET, PETG, etc., such as divided by product type: lipstick tube, cream bottle, vacuum bottle, powder box… Due to the length of the article, the editor can only find one point to cut into the analysis. If you want to know more detailed knowledge of inner packaging materials, you can leave a message or pay attention to future articles.

In fact, there are only two major directions of inner packaging materials: plastic and glass. In terms of plastic packaging materials, the previous article also listed some examples: analysis of the advantages and disadvantages of PP plastic bottles; why are big-name cosmetics all plastic bottles?, so this article will introduce glass bottles to avoid the majority of users thinking that Yusu Packaging only develops and produces plastic bottles, but does not have the business of glass bottles. In fact, there are also glass bottles~

Introduction to glass bottles

Glass bottles used in cosmetics are mainly divided into: skin care products (creams, lotions), perfumes, essential oils, nail polishes, and the capacity is small. Those with a capacity greater than 200ml are rarely used in cosmetics. Glass bottles are divided into wide-mouth bottles and narrow-mouth bottles. Solid pastes generally use wide-mouth bottles, which are suitable for electroplated aluminum caps or plastic caps. The bottle caps can be used for color spraying and other effects; emulsions or water-based pastes generally use narrow-mouth bottles, which are suitable for pump heads. If they are equipped with caps, they need to be equipped with inner plugs. Water-based agents are equipped with small-hole inner plugs, and thicker emulsions are equipped with large-hole inner plugs.

Uneven thickness of glass bottles can easily lead to damage, or they can be easily squeezed by the contents under severe cold conditions. The reasonable capacity should be tested during filling, and paper should be used for transportation and separated individually. The products should be equipped with color boxes, and inner trays and middle boxes can better achieve anti-vibration effects.

Commonly used bottle shapes for glass bottles are usually in stock, such as essential oil bottles, ordinary transparent or frosted bottles. The production cycle of glass bottles is relatively long, and it takes 20 days at the fastest. Some products take 45 days to deliver. The general order quantity is 5,000 to 10,000. The smaller the bottle, the larger the quantity. The cycle and minimum order quantity will be affected by the peak season and off-season. Mold opening cost: manual mold is about 2,500 yuan, automatic mold is generally about 4,000 yuan, 1 out of 4 or 1 out of 8 costs about 16,000-32,000 yuan, depending on the manufacturer’s conditions. Essential oil bottles are usually brown or colored and colored frosted, can be light-proof, the lid has a safety ring, can be equipped with an inner plug or a dropper, and perfume bottles are generally equipped with exquisite spray pump heads or plastic caps.

Combination form:

1. Cream bottle series: glass bottle + double-layer plastic outer cover (generally 10g-50g capacity)

2. Essence series: glass bottle + plastic pump head or electroplated aluminum pump head (relatively high capacity between 20 and 100ml)

3. Toner series: glass bottle + plastic inner plug + outer cover (above 100ml, can also be equipped with a pump head)

4. Essential oil bottle series: glass bottle + inner plug + big head cover or rubber dropper + dropper + electroplated aluminum cover

Production process:

Bottle body: transparent bottle, frosted bottle, colored bottle (white porcelain bottle, essential oil bottle) (uncommon colors but high order quantity, rarely used in professional lines), spraying

The effect of spraying generally requires an additional 0.5 yuan to 1.1 yuan per piece, depending on the area and the difficulty of color matching. Silk screen printing is 0.1 yuan per color. Cylindrical bottles can be calculated as single color, and special-shaped bottles are calculated as double or multi-color.

Printing: Silk screen printing, hot stamping, (the number of silk screen printing and hot stamping should not exceed 2 times in total, too many colors will result in high defective products and high costs)

Silk screen printing: There are usually two types of glass bottle silk screen printing, one is high-temperature ink silk screen printing, which is characterized by not easy to fade, dull color, and difficult to produce purple coloring effect, and the other is low-temperature ink silk screen printing, which has brighter color and higher requirements for ink, otherwise it is easy to fall off, and attention should be paid to bottle disinfection. Hot stamping and silver stamping are 0.4 yuan/item.

The introduction of glass bottles in this article has ended here. This article is not long, but the information on glass bottles included is very comprehensive. I hope you can study and compare it carefully. If you can digest these knowledge points of glass bottles, you can also be considered an entry-level person in the glass bottle industry~