Laminating Glass with PVB Film Processing

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Qingdao Port
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TT or L/C
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2 TONS m.t.
Supply Capability:
100000 Tons Per Year m.t./month

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Product Description: Laminating Glass  with PVB Film Processing

  

1. The glass cutting, cleaning and processing

 

To begin with, precisely cutting the glass as required is of importance. In case of the bubbles occurred the cutting error must be less than 2mm. Then the well cut glass edge should be grinded and cleaned to remove the oil stains and the other defects. At last, the softened water must be used in the last period to get rid of the unqualified products due to the weak adhesion. After the above process, the clean glass can be dried and placed in the room temperature for future use.         

 

2. Lamination

 

In the laminating room, the temperature should be kept in 15~25°C, the humidity 18%~40% , the environment clean and the equipment and employees tidy. The glass must lay flat and so should the film on it. Then lay the other piece of glass on the film. Drawing the film is forbidden during trimming the film. Besides, be assured that the film must be 2-5mm bigger than the glass and the trimming knife keep away from the glass lest the glass particles cause the bubbles on the edge of the laminating glass.                  

 

3. Pre-pressure exhaust

 

To get the well sealed edge, the air between the film and the glass needs to be pressed out of the laminated glass. Two methods are generally divided into.

 

a. Rolling exhaustion.

 

Firstly, Heat the well laminated glass up to 25~40°Cand put it into the first roll (the distance of each rolls are 1mm smaller than the thickness of well laminated glass with the pressure of 0.2~0.5MPa.), then put it into a thermo stated container to heat up to 60~80°C, and then get into the second roll (the distance of each rolls are 2mm smaller than the thickness of well laminated glass with the pressure of 0.3~0.5MPa).After getting out of the rolls, seal the four sides of the laminated glass with clear tape to get rid of the bubbles.

 

b. Thermo vacuum pre-pressing exhaustion

 

Put the laminated glass into a vacuum bag or vacuum rubber gasket, and then employ the cool pumping and heat pumping to press the air out. Tips: the decompression vacuum degree is beyond 650mmHg and the cool pumping temperature should be less than 25°Cfor 30~40 minutes; while in the period of heat pumping, the temperature should be 70~120°C for 30~60 minutes.  

 

4. Molding in high pressure

 

Place the Pre-pressure exhausted laminated glasses vertically on glass bracket leaving the distance of each glass more than 5mm. After the glasses are put into the thermo container, sealing the door and raising the temperature to 65°C-85°C; Then raise the temperature and pressure at the same time. The temperature raising rate is controlled in 5°Cper minute, and the pressure in 0.06MPa per minute. When the temperature and pressure up to 120~140°C and 1.0~1.5MPa respectively, keep them for 30~60 minutes. After that, keep the pressure and lower the temperature to 45°C, at the same time, loose the pressure to the atmosphere pressure. Finishing the high pressure molding process, we can have the final laminated glass for usage. 

 

Marks, packaging, transportation, storage and shelf life of Laminating Glass  with PVB Film Processing

 

1).Marks: it should include the product name, specifications, lot number, production date, expiration date, plant address and the brand name.

2).The package: the pvb film is insulated with PE film, cased into an aluminum foil bag, then vacuum sealed, and lastly into wood box or card drum. There should be quality certificate, packing list in the package. The marks of moisture proof, shock proof and sunlight proof should be labeled.

3).Transportation:there should be no direct sunlight, drench, and violent shaking during the transportation.

4).Storage: the product should be stocked in clean warehouse and normal temperature. It is forbidden to leave it under direct sunlight. As for the broken or opened package, they should be stocked under temperature of 20°C±5°C and in relative humidity of 20%-40%.

5).Shelf life: under normal atmospheric temperature, if well-packaged, the shelf life can be 2 years.

 

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Q:How often will the plastic film in the greenhouse be replaced?
In actual production, once a year. Although now the film is very durable, but light, fog, dripping the new film or better.
Q:What's the difference between PE plastic film and PVC plastic film?
The utility model is used for hand winding film and can also be used for machine winding film, and can be widely used for centralized packaging of various goods. PVC membrane is mainly used for 1, sewage pipes, 2 and PVC plastic film rods and plates. 3, construction, packaging, printing, equipment, process products.
Q:Why do you put plastic film on the paved road?
It is used for curing concrete. Because cement curing needs proper moisture content, and reacts with moisture to make the hardness of concrete increase continuously.
Q:Should the surface of the plastic film be removed when the activated carbon is used?
Need demolition. Make a small cloth bag and pack it up. Because activated carbon must be in contact with indoor or closet air, it can absorb toxic or harmful gases or air moisture, plastic film will prevent it from contact with the air.
Q:How to identify the model of plastic greenhouse film?
Should be 7.5-8 meters, we span 6 meters, with 7.5 meters, just right, both sides can be stuck, 8 meters, a little more.
Q:Can it be covered with plastic film after pouring concrete outside zero?
The correct approach is: 1, water and aggregate heating; 2, the erection of greenhouses; 3, mixed with antifreeze method and so on, this is not the only one. About zero degrees or even about 10 degrees below zero, mixing additives is a simple and reliable way. After pouring, seriously cover the insulation, hot water conservation can.
Q:In a bowl with the seeds covered with plastic film, you need time off the air
When the seedlings grow, to remove the cover film, otherwise the film may have a high temperature. Can take place at the seedling emergence, not to suspend the Miao Qi off again.
Q:FFS plastic film bags are injection type?
Tube film (blown film process) has become the best production method of FFS bag film products. FFS bag blown film technology is divided into single layer extrusion and multi layer extrusion technology according to its product form. Their production principle is basically the same, mainly equipment is different.
Q:What are the factors that affect the barrier property of plastic film?
The diffusion energy required by the gas and water vapor through the crystalline plastic film is smaller than that of the amorphous plastic film, so the crystalline plastic film exhibits better resistivity. Under the same conditions, the higher the crystallinity of the plastic film, the better the barrier properties.
Q:What is the raw material of agricultural film?
Agricultural film raw material is HDPE, commonly known as low pressure, buy this kind of raw material, the most important to see your demand, if the amount of big, you can directly find petrochemical agents.
PROTECT, is the professional manufacture Enterprise with the largest investment scope, the most comprehensive product Specifications, strong production capacity and the highest sales volume, mainly produce special materials PVB and EVA film for bullet-proof glass, windscreen of the automotive, architectural safety glass as well as solar cell panel.

1. Manufacturer Overview

Location Guangzhou, China
Year Established 2002
Annual Output Value Above US$ 20 Million
Main Markets North America; South America; Eastern Europe; Southeast Asia; Africa; Oceania; Mid East; Eastern Asia; Western Europe; Southern Europ; South Asia
Company Certifications ISO9001:2000

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Guangzhou Port
Export Percentage 51% - 60%
No.of Employees in Trade Department 6-10 People
Language Spoken: English; Chinese;
b)Factory Information  
Factory Size: Above 30,000 square meters
No. of Production Lines Above 10
Contract Manufacturing Design Service Offered; Buyer Label Offered
Product Price Range High; Average