What glass laminating machine should I buy?

With the increasing demand for safety glass in residential and commercial buildings, the demand for various types of laminated glass is also increasing. Due to the existence of various types of laminated glass in today’s society, many new glass processors do not know how to choose glass lamination equipment when preparing to make laminated glass. Now through this article, we will introduce the difference between PVB lamination line and EVA lamination furnace, so as to better help glass processors understand lamination equipment and purchase the glass machinery you need in a targeted manner. 

Laminated glass is composed of two or more pieces of glass with one or more layers of organic polymer interlayers sandwiched between them. After special high-temperature pre-pressing (or vacuuming) and high-temperature with high-pressure processes, the glass and the interlayer are permanently Bonded as a composite glass product.

The difference between PVB laminated glass production line or EVA glass laminating machine:

1. The interlayer is different.

The PVB laminated glass production line use PVB film, and the EVA glass laminating machine use EVA film. (Please refer to this article https://www.bolaymac.com/what-is-the-difference-between-pvb-and-eva/ to understand the difference between PVB film and EVA film)

2. The application is different.

PVB laminated glass production line can produce architectural glass and automotive glass, EVA glass laminating machine can only produce architectural glass or decorative glass.

Application scope of PVB laminated glass

• PVB laminated safety glass mainly uses PVB-based plasticized film as the intermediate film.
• PVB already has good purity, transparency, light stability and strong glass adhesion. PVB film can absorb almost 100% of ultraviolet rays, and the laminated glass produced with it is mainly used in the two fields of automobile and construction.
• Due to its high impact strength and safety in use, PVB laminated glass is suitable for doors, windows, ceilings, floors and partition walls in buildings, skylights in industrial plants, shop windows, kindergartens, schools, gymnasiums, private houses, Doors and windows of buildings where valuables or glass is fragile, such as villas, banks, jewelry stores, post offices, etc. PVB laminated glass is often used in schools, airports, hotels, ministries and other public facilities, accident-prone places (floor-to-ceiling windows, glass doors, etc.) and roof skylights.
• Bent laminated glass can be used for lift-type sightseeing elevators, revolving doors of shopping malls and hotels, and pillar wrapping decoration of lobby.
• Bulletproof glass and anti-theft glass are also PVB laminated glass, which can be used in the business halls of banks, securities companies, insurance companies and other financial enterprises, as well as the counters, doors and windows of gold and silver jewelry stores, museums, commercial residential buildings, prisons and other places.
• Laminated glass with PVB films produced with special formulations are also widely used in aerospace, military and high-tech industries, such as aircraft, spacecraft, military instruments, solar cells and solar receivers, and composite shock-absorbing steel plates in the industrial field. Wait.

Application scope of EVA laminated glass

• Laminated glass with EVA interlayer film for decoration engineering is often used in combination with PET back film, photo paper (PP, PVC), silk, metal wire, paper, glass fiber, fabric, etc. There are more than 20 colors to choose from, which can produce a variety of high-grade polar. The decorative glass with artistic sense is mainly suitable for the decoration of partition, lighting roof and exterior wall decoration of hotels, office buildings, shopping malls, entertainment places, playgrounds, etc.
• The application of EVA film in new energy is mainly reflected in solar photovoltaic panels, conductive glass, smart glass, etc. The production of solar photovoltaic panels is made of silicon crystal panels and circuit boards with EVA film, usually made by EVA laminating machine; The traditional conductive glass, by coating a layer of conductive film (ITO film) on the surface of float glass, to make it conductive. Now the conductive glass is a laminated glass made of EVA film and conductive film, and some glass also has LEDs in the middle, which is more beautiful and elegant. The smart glass is a new type of special optoelectronic glass product with a sandwich structure that interlayers a liquid crystal film and an EVA film into the middle of two layers of glass, and is glued together at a certain temperature and pressure.
• The application of EVA film in industrial glass, the current refrigerator door glass and washing machine panel basically use EVA film to sandwich tempered glass with a thickness of about 3.2mm and special materials at high temperature, which is both beautiful and safe.

3. Investments are different.

The investment in the PVB laminated glass production line is generally higher, and the investment in the EVA glass laminating machine is less.

4. The processing principle is different.

Processing principle of PVB laminated glass production line:

1. Glass cleaning;
2. Lamination: layup the glass with PVB film;
3. Press glass into the hot pre-pressing machine;
4. Autoclave, pressurize 13 kg and heat to about 130 degrees, then cooled to about 40 degrees to form PVB laminated glass.

Processing principle of EVA glass laminating machine: the air between the two pieces is pre-pumped by a vacuum pump, so that a vacuum state is formed in the silicone bag, and the laminated material and the glass are heated together to reach a peptized state, so that the two pieces of glass are glued together. together. This machine can heat-bond silk cloth, paper products, calligraphy and painting, ultraviolet one-way perspective film, dimming film, low-grade film and other functional films or specific films with ordinary glass to produce multi-functional process laminated glass and decorative glass. ; It can also be used for the composite of glass and PC board, glass and solar panel and other soft boards and sheets.

5. The yields is different.

The daily output of PVB laminated glass production line is high, which is generally 400-500 square meters; the daily output of EVA glass laminating machine is 200 square meters, and the large furnace with more layers can also reach 300 square meters.

PVB lamination and EVA lamination are different in various aspects, each with its own advantages and disadvantages. Glass processors should purchase glass laminating machine that meets actual needs according to your different production needs.

BolayMac will walk you through the need of your glass process and ensuring you to purchase the suitable glass equipment for your plant.