Laminated glass and insulating glass are both composed of two or more original glass sheets, but the combination methods are different.
Laminated Glass is made of two or more original glass sheets with a transparent plastic lining between each sheet, which is formed by hot pressing and bonding. The original glass is ordinary flat glass or float glass. The lining is mostly made of polyvinyl butyral and other plastic films. Laminated Glass is divided into flat Laminated Glass and curved Laminated Glass according to its shape. According to the appearance quality, it is divided into superior products and qualified products.
Insulating glass is made of two or more original glass sheets, separated by isolation frames at the periphery, and sealed with sealant, so that a dry air layer is formed between the glass layers. The original glass sheet adopts flat laminated, toughened, heat-absorbing, heat-reflective, embossed glass, etc. The sealant adopts two-component sealant, which must meet the performance requirements of insulating glass. The partition frame can be aluminum frame, stainless steel frame, etc. According to the plane shape, the hollow glass has square and rectangular shapes. Requirements for the appearance of hollow glass: The inner surface of the hollow glass must not be splashed with adhesive which may hinder the perspective. The inspection items of sealing, dew point, ultraviolet radiation, climate cycle and high temperature and high humidity performance of insulating glass must be qualified, otherwise it will be judged as unqualified product.
“Will this LED track light head fit in the track in my home?” We always receive similar questions from potential customer of our online store, though we have clearly described it’s a LED track light head for H type, or J type, or L type track. It seems that many customers don’t understand what’s the meaning of H, J and L, and don’t know what’s the type of the track installed in their home.
Why the track gets these names, H, J, and L? Actually the names are from the first letter of three lighting brands, Halo, Juno, and Lightolier, each brand set up its standard for track and track head, and there is no changeability between three brands. It’s not easy to tell the difference from the track outside, so let’s take a look at the cross-section of three types of track. Unlike J type and L type, which only have 2 strips of wire, H type has 3 strips of wire, the upper one is grounding, and two opposite ones are neutral and live, H type is also the most common track in the market, and is widely recommended for new installation because of easy availability and low cost. The significant difference between J type and L type is the distance between contact measure cross, 7/8 inch for J type, and 3/4 inch for L type.
Accordingly, there are three types of track head adaptor.
Following is an H type LED track head, there are three pins on the adaptor, the top pin is the grounding pin, the opposite pins are neutral and live pin, and the pin to pin distance is 1 inch, which is consistent with the 3-wire system in H type track.
Following is a J type LED track lighting, there are two pins on the adaptor, and pin to pin distance is 1 inch, which are consistent with the 2-wire system in J type track.
The difference between L type track head adaptor and L type track head adaptor is very minor, so keep in mind that the pin to pin distance for L type track head adaptor is only 7/8 inch, not 1 inch for H type and J type track head adaptor. While the L type track system is very few in the market, so generally the 2-wire track system is J type track and J type light head.
You may notice that the above three track types we talked about now are all single circuit, which means that you can only control the track heads on one track as a whole group. For most applications, such as accent lighting for wall arts in the living room, or task lighting over the kitchen island, simple on/off and dimming as a whole group is enough. If you want to control the track heads on one track by two groups or to render complicated digital lighting effect, there are two circuits or three circuits track type in the market, and also corresponding track head for that purpose. The major difference from single circuit track is that two circuit track and three circuit track have more strips of wire, for example, two circuit H type track has 4 strips of wire.
So please check the track carefully before selecting the right track head for it. H type, J type or L type, and also single circuit, two circuits or three circuits?
After so many years of development, the pillow packing machine has been developed in all aspects, and it has a pivotal position in the production process of many industries. It can be seen that the pillow packing machine has considerable development prospects. It attracts a large number of enterprises and manufacturers to invest in its production, which greatly stimulates the pillow packing machine market. The following are the structural characteristics of the pillow packing machine:
The pillow packing machine is controlled by dual inverters, and the bag length can be set according to product requirements. It can be achieved in one step, which saves time and film.
The pillow packing machine has a man-machine interface operating system, which can freely set parameters, one-key operation, simple and convenient operation, reducing labor, thereby reducing production costs.
The pillow packing machine has its own fault diagnosis function inside the machine. And has independent PID control of temperature, which is better suitable for various material coatings.
pillow packing machine high-sensitivity photoelectric color code tracking, sealing and cutting position is accurate and safe. And it has a positioning stop function, no sticking to the knife, no waste of film.
All control systems of the pillow packing machine are controlled and operated by advanced software, which is convenient for the adjustment of equipment functions and technical upgrades.
As the most commonly used material in the decoration of circuits, PVC electrical tape can play a good role in insulation, winding, wrapping, and binding in various circuits and circuits. So, how to use PVC electrical tape correctly?
The main function of PVC electrical tape is to protect the circuit and circuit, such as insulation, binding and fixing, so it is necessary to highlight its protective function when using electrical tape. The correct use method is determined according to the specific protection function and the type of power cord connector. However, in general, the correct use of electrical tape is as follows:
1. Clarify the starting point of wrapping electrical tape:
It is very important to have a clear starting point for the wrapping of PVC electrical tape. For example, if the starting point of electrical tape is not well selected, it will not only cause wasteful use of electrical tape, but may also affect its final effect. Generally speaking, the starting point of the wrapping of PVC electrical tape should be 1-2 cm where the copper wire or aluminum wire is exposed in the circuit.
2. Clarify the winding method of electrical tape:
Different line joints have different ways of winding electrical tape. According to the connection method of the line, the winding methods of PVC electrical tape include "ten" winding connection, "one" winding connection, and "T" winding connection. Therefore, we must pay attention to the corresponding winding method before winding the electrical tape.
3. Perform winding operations correctly according to the winding method of electrical tape:
The electrician can only carry out the winding operation after clarifying the wrapping starting point and winding method of the PVC electrical tape, and must pay attention to the correct winding method during the winding process.
Take the "one" line connector as an example. When using PVC tape, after ensuring that the beginning of the PVC tape is flat, wind it from the cross end of the wiring diagram to the other end, and try to make the PVC electrical tape firmly Winding on the line. Ensure that the PVC electrical tape will not loosen or loosen during the effective period of use after use.
4. Matters needing attention when winding electrical tape:
PVC electrical tape cannot be directly applied to the line joints when it is wound. PVC electrical tape is generally used in conjunction with electrical insulating black tape. Generally, when winding, use electrical insulating black tape to wrap 2-3 layers on the wire head first, and then use electrical tape to wind 2-3 layers again, and repeat the winding twice to complete the winding operation. At the same time, the strength of the winding should be maintained as much as possible during the winding process to ensure that the PVC electrical tape will not stretch or peel off.
Glass products are becoming more and more popular and widespread in modern life. In recent years, the appearance of Laminated Glass and laminated glass has also attracted everyone’s attention. You should not know much about Laminated Glass and laminated glass. These two types of glass Although there is only one word difference, how much difference is there? Today, I will give you a brief introduction to Laminated Glass and laminated glass.
Laminated Glass and laminated glass
Laminated Glass, also known as laminated glass or vacuum glass, is composed of two or more pieces of glass. A layer of organic polymer interlayer film is sandwiched between the glass, and the glass and the interlayer film are bonded together through a high temperature and high pressure process. Glass product. Features of Laminated Glass
1, sound insulation
Laminated Glass is in a vacuum state, which can effectively block sound waves, eliminate noise interference, and create a quiet environment. It is suitable for places with high requirements for sound insulation and is often used for office decoration.
2, UV protection
In addition to sound insulation, Laminated Glass also has the function of filtering ultraviolet rays. It can not only protect the skin health of people working indoors, but also protect valuable indoor furniture, curtains, and displays from ultraviolet rays to prevent fading and cracking.
3, strong transparency
Laminated Glass has strong transparency. Even in the case of low outdoor temperature in winter, Laminated Glass is difficult to condense, ensuring a clear view.
4, good impact resistance
Laminated Glass is composed of two (or more) ordinary glass or tempered glass, which has excellent shock resistance. Commonly used Laminated Glass interlayer films are PVB, SGP, EVA, PU, etc., which have strong bonding ability. Resist the continuous attack of hammers and knives. Some specially made Laminated Glass can also resist bullets and have strong resistance.
5, high safety performance
Laminated Glass has good anti-explosion and bullet-proof capabilities, is hard and wear-resistant, and is not easy to break. Even if it breaks when it is hit by a large heavy object, due to the strong adhesion of the intermediate film, the fragments will be connected together, and the glass surface is still smooth, which effectively prevents the occurrence of fragmentation and penetrating fall time. Ensure personal safety and high security.
Laminated Glass is mainly used in public places such as banks, airports, hotels, etc. because of its hardness and safety. At the same time, Laminated Glass has the advantages of transparency and sound insulation, so that it has unexpected good effects when used in home decoration.