[Industry Knowledge Sharing]Chamsmetic takes stock of several frosting techniques for glass containers

Introduction: With the rapid development of the cosmetic packaging industry, consumers have increasingly higher visual requirements for product packaging. Glass matte bottles are favored by many cosmetic packaging manufacturers and consumers due to their noble and elegant appearance and touch. They have become one of the main materials used in cosmetics applications. This article briefly introduces the relevant knowledge of the matte process of glass containers, providing information for customers and friends of Chamsmetic to refer to:

 

Chamsmetic, with over 15 years of experience in packaging design and manufacturing in daily necessities and cosmetics fields, has a deep understanding of various packaging techniques in the industry. Through this article, we will briefly discuss the relevant knowledge of the matte process of glass containers for customers and friends who need cosmetic packaging design and manufacturing. Please continue reading:

 

ã€Matte Process】Chemical matte glass is essentially a type of acid-etched glass. Similar to chemical etching and chemical polishing, it utilizes the chemical corrosion of acids on the surface of glass.

 

The differences are as follows:

1) In the chemical polishing process, certain insoluble reaction products produced by the chemical corrosion of acids are not allowed to adhere to the glass surface. Efforts are made to dissolve and rinse them off. The chemical polishing process always involves uniform erosion of the entire surface, resulting in a transparent and smooth surface.

2) In the matte process, the insoluble reaction products of chemical reactions adhere to the glass surface. With prolonged reaction time, the reaction products accumulate into granular crystals firmly attached to the surface. The surface with adhered reaction products hinders further acid corrosion, resulting in non-uniform erosion and a semi-transparent matte surface. This matte surface scatters incident light, creating a semi-transparent and hazy feeling, hence the name “matte”.

 

Frosting techniques for glass containers-Chamsmetic

 

01 Matte Characteristics

Matte belongs to a chemical erosion process. The generated insoluble reaction products are small particles of crystals firmly attached to the glass surface. The contact between the glass surface and the acid solution varies depending on the gaps between particles, resulting in different degrees of erosion and uneven surface. It belongs to surface chemical treatment. By controlling the size and quantity of crystals adhering to the glass surface, rough or delicate matte surfaces can be achieved.

 

02 Matte Degree Determination

1) Scattering Rate

The higher the scattering rate of the glass surface, the higher the degree of matte.

2) Total Transmittance

Apart from scattering, reflection, and absorption of incident light by glass, the rest is transmission. Colorless glass has a relatively low absorption rate for visible light, and for colorless transparent glass of the same variety and composition with the same thickness, the total transmittance before matte remains nearly unchanged. Therefore, the total transmittance can approximately indicate the magnitude of glass scattering rate, that is, the lower the total transmittance, the greater the degree of matte.

3) Surface Morphology

It mainly refers to the size and distribution of etched product particles on the glass surface, which not only affects the total transmittance but also influences the fineness of the external surface. If the distribution of etched product particles on the surface is sparse, the total transmittance will be higher. If the distribution is dense, the total transmittance will be lower.

 

03 Matte Methods and Chemical Etching Materials

1) Matte Methods

– Immersion Method: immerse glass products in the matte solution for a certain period.

– Spray Method: spray the matte solution onto the glass surface.

– Coating Method: apply the matte paste on the surface of glass products.

 

2) Chemical Etching Materials

– Matte Solution: a liquid prepared by formulating hydrofluoric acid and additives.

– Matte Powder: powder prepared by formulating fluoride and additives. Sulfuric acid or hydrochloric acid is added when in use to generate hydrofluoric acid. It belongs to the category of matte solution in essence.

– Matte Paste: paste prepared by formulating fluoride and acid, or hydrofluoric acid and additives.

 

Note: If the ratio of hydrofluoric acid is appropriate, the effect is good, and the time required for matte is shorter than that of matte paste and matte powder. However, hydrofluoric acid is not suitable for large-scale production, especially in hot weather. Its operation is extremely unstable and easily volatilizes into the atmosphere, causing pollution. Moreover, hydrofluoric acid poses significant risks to human health, as it can corrode the skin and bones. It is gradually being phased out as a matte method.

Matte paste and matte powder are both excellent raw materials for glass matte treatment, but they are applicable to different operating methods. They complement each other in the glass industry.

Matte paste is more suitable for partial matte of glass products and is convenient to operate. However, it is not suitable for large-area glass matte because it tends to result in uneven matte surfaces. Matte paste is commonly used in silk screen printing.

Compared with matte paste, the operating process of matte powder is slightly more complex, as it requires preparing a solution with matte powder. However, matte powder is suitable for almost all types of glass products. It can be used for matte treatment of glass cups, glass bottles, glass decorations that can be soaked in a solution, as well as flat glass and sliding door glass that are not suitable for immersion in the matte solution but require matte treatment.

 

Customizable packaging design-Chamsmetic

 

04 Difference between Matte Glass and Sandblasted Glass

1) Sandblasted Glass:

It is formed by using high-speed ejected glass sand particles to strike the glass surface, creating fine concave-convex texture and producing a hazy effect to refract light. The finer the glass sand, the smoother and more three-dimensional the effect. Compared with matte, the glass products produced by sandblasting have rougher surfaces, higher damage rates, and more dust pollution. The difficulty of the process is average.

2) Matte Glass:

After applying matte powder to ordinary glass bottles, they become matte glass bottles. This production process uses chemical agents to immerse glass surfaces for corrosion. It is mainly used in combination with silk screen printing and can be used for painting on the glass surface.

3) Frosted Glass:

Also known as frosted glass or opaque glass. It refers to ordinary flat glass that is mechanically sandblasted, manually ground, or etched with hydrofluoric acid to create a uniform surface. Due to the rough surface, it diffuses light, making it translucent rather than transparent. Frosted glass allows gentle and non-glaring lighting. Thin glass is not suitable for frosting.

 

05 Matte Precautions

1) The matte solution must be prepared in plastic or corrosion-resistant metal containers.

2) Rubber gloves should be worn when using the solution to prevent skin burns. If it accidentally contacts the skin, rinse with water immediately.

3) The glass product surface must be cleaned thoroughly.

4) The amount of acid added should be adjusted according to different glass materials. Water should be added before sulfuric acid.

5) The matte solution should be stirred evenly before use and covered when not in use.

6) During the use of the matte solution, matte powder and sulfuric acid should be added in a timely manner.

7) The wastewater produced during production can be neutralized with lime before discharge.

 

06 Applications of Matte

1) Artworks:

With the improvement of people’s aesthetic standards for artworks, there is increasing attention to decorative crafts. A large part of these crafts are made of glass. Over the past half-century, glass art design has penetrated people’s lives with unprecedented depth and breadth. The use of different types of glass and manufacturing techniques in shaping surpasses any previous stage in the development of glass. A good glass craft is not just a decoration but also has appreciation and collectible value. After matte treatment, ordinary glass crafts have a soft luster on the surface, smooth and delicate to the touch, pure white like jade, and warm and glossy.

2) Decorative Design:

By subjecting ordinary glass to matte treatment and combining various techniques to create various beautiful patterns on the glass surface, it can be used as room dividers, screens, wardrobes, kitchen sliding doors, bathroom sliding doors… It not only meets our living needs but also brings a rustic, pure, peaceful, and natural charm to our living environment. The unique warmth and subtlety of matte, combined with the brilliance of patterns, perfectly blend classical beauty with modern aesthetics, making our homes more modern and artistic. The application of matte glass in home decoration satisfies people’s aesthetic needs, ensures good lighting, and protects privacy.

3) Technology:

Entering the 21st century, computers, televisions, and mobile phones have become an indispensable part of people’s daily lives. Traditional display screens produce excessive radiation, causing eye strain and making it difficult to see the screen clearly when exposed to light, resulting in reflection like a mirror, which greatly affects people’s daily lives. The introduction of non-reflective matte glass completely solves this problem.

4) Glass Packaging:

Matte bottles are widely used in the cosmetic packaging industry, favored by consumers due to their noble and elegant appearance. The extremely fine matte particles on the glass surface give a delicate touch, and the surface of the bottle emits a glossy sheen like fine jade. Moreover, the inherent stability of glass effectively prevents chemical reactions between cosmetics and the packaging under light exposure, better ensuring the quality of the cosmetics.

5) Wine Bottle Packaging:

After matte treatment, wine bottles have a misty, noble, and elegant visual effect, with a delicate and smooth touch compared to ordinary glass wine bottles. Matte treatment is particularly suitable for wines, such as quick improvement of product grade and effective prevention of light reactions, thereby maximizing the quality of the wine and prolonging its shelf life. Compared with other packaging types, matte wine bottles have advantages in terms of practicality and manufacturing techniques. In the highly competitive liquor industry, to develop and stand out, it is necessary to enhance design and adjust weight.

 

Chamsmetic-degradable material packaging design solution

 

Experience the elegance and sophistication of Chamsmetic’s glass packaging solutions. As an industry leader with over 15 years of expertise in packaging design and manufacturing, Chamsmetic understands the evolving visual demands of consumers. Our eco-friendly glass packaging, including matte glass bottles, offers a luxurious touch and exquisite appearance, making it a preferred choice for cosmetic packaging manufacturers and discerning consumers.

 

Discover the secrets of the matte process for glass containers. Chemical matte glass, crafted through acid etching, creates a semi-transparent and subtly textured surface. At Chamsmetic, we control the size and quantity of crystals adhering to the glass surface, achieving a range of rough or refined matte finishes. Our matte glass exhibits high scattering rates and lower total transmittance, allowing your products to exude an aura of elegance.

 

We employ various methods such as immersion, spraying, and coating for matte glass production. Our matte solutions are carefully formulated with hydrofluoric acid and additives, ensuring optimal results. To protect both our craftsmen and the environment, we use plastic or corrosion-resistant metal containers for solution preparation. Safety precautions, including the use of gloves and thorough skin rinsing in case of contact, are strictly followed.

 

Matte glass offers diverse applications in different industries. From artistic masterpieces to interior decoration, our matte glass creations infuse pure beauty into homes and galleries. The matte glass’s gentle light diffusion provides privacy while maintaining excellent lighting conditions. In the realm of technology, our non-reflective matte glass screens alleviate eye strain and offer clear visibility. For the wine and cosmetic industries, our matte glass packaging preserves product quality, enhances aesthetics, and establishes a distinctive brand image.

 

At Chamsmetic, we take pride in our commitment to eco-friendly practices. Our glass packaging solutions not only meet the highest visual standards but also contribute to a sustainable future. By choosing Chamsmetic as your packaging partner, you embrace elegance, craftsmanship, and environmental responsibility. Experience the allure of Chamsmetic’s glass packaging solutions today.

ã€Brand Name】Chamsmetic: Your Eco-Friendly Packaging Solution

ã€Keywords】Chamsmetic, glass packaging, eco-friendly packaging, packaging solutions, packaging manufacturers, cosmetic packaging