Knowledge of materials

1, double-sided adhesive ----- 2. Release film & release paper ----- 3. Protective film ------ 4. Foam ------ 5.
As little brother learn limited! In this can only carry out some simple on the road in order to initiate, hope people of insight can express their views.
Those who learn with me new people, I will ask them to stay in the warehouse for a few days, not for the other is to its understanding of materials, to be familiar with the various characteristics of the material, which is an engineering technician necessary knowledge.
Only skilled application of the material engineers, can not trouble the customer to pass the product information and design concepts into their own production process, to make qualified samples. Often the customer will only specify the main material used in the product, the production of auxiliary materials is based on the properties of the main material to choose their own, what auxiliary materials can be used to ensure that both production and economic value! This requires our engineering designers to be quite familiar with the various materials. Some people do not recognize the importance of this, the general will be perfunctory grass familiar, that as long as the contact will know a lot of material for a long time. This idea and attitude will give him a lot of trouble in the back of the work, the main display of the product when the production process can not understand, often puzzled when I do not know and so on. I have a very intuitive way to know the material! Is to establish a set of their own specimens, is to collect a variety of materials one by one understanding, record. Use your eyes, hand, nose to understand the various samples you have collected. Look at the appearance, color, the actual test the thickness of the product, viscosity, flexibility, hardness. With the smell of the smell of the product, manufacturers of products, the formula is stable, with a product is to ensure that these features.
 
Here I know some of the material I made a brief introduction, but also hope that you give more guidance to listen to.
1, double-sided adhesive, double-sided adhesive is the basic appearance of the same double-sided are sticky. (Hey! This is not nonsense!) From the existence of the form can be divided into two kinds, one for the non-substrate, one for the substrate. No substrate is the glue directly coated on the release paper, generally very thin, there is a great extension, flexibility, die-cutting process easy to stick back, deformation. Such as 3M 468,467.
There is a substrate in a layer of PET film, tissue paper or non-woven on both sides of the coating glue. PET substrate products to be easy to process some cotton paper and non-woven substrate processing is more difficult, the edge is easy to see the hair, easy to deformation, poor flexibility.
Glue classification I now have two kinds of contact, one is acrylic glue, the application of more common can be bonded metal, plastic, glass and other objects with high surface strength of the material. One is silicone rubber, this type of adhesive tape can be directly and rubber, silicone material bonding without additional treatment. Glue the application of different objects are different; the current market application of the adhesive tape made of acrylic rubber on the other side is the silicone rubber, so that you can stick a side of the sticky silica gel bond. Such as, 3M 9731, Yongyou YT156 four-dimensional HDTTDS15 \ RHTTDS25 and so on. And if you use acrylic glue to stick silicone key when you need a special treatment of silicone adhesive material, change its surface strength and then paste. Each company's production of materials also have their own classification, such as 3M companies have, 300LE, 200MP, etc., which should be their own to distinguish between the company's glue, and other companies are not necessarily the same.
2, from the film and release paper, PET, PE film coated with a layer of silicone oil, from the type of agent, that is, from the film, from the film is generally single, the formula from different types of different strength, after Instrument test cocoa measured the degree of its off-type, such as 15G, 25G to 80G range, the smaller the value of the smaller force from the smaller, and vice versa, (or said: heavy). Manual test the severity of the method is to take a same adhesive tape, divided into several pieces of the same size, take a few different release film and glue each other fit, apply the same pressure, hand to carry out the peel test, carefully The size of the tension is heavy. Stripping the strength of the large is from the type of heavy, and vice versa is light.

Bright turn die cutting technology
With the rapid growth of the national economy, the rapid development of all walks of life, the packaging industry put forward higher requirements, the demand for corrugated boxes is very large, the proportion of shaped cartons is getting higher and higher, higher requirement. Die cutting, according to the shape of the template can be divided into flat die cutting and circular die cutting (ie, rotary die cutting) two. Flat die cutting is generally a single machine die cutting (commonly known as slot machine). There are reciprocating flat die cutting, cutting precision is high, but the production efficiency is low, labor intensity, die cutting specifications are small; and rotary die cutting can use the existing equipment, can be automated, less investment, quick , The production speed is high. Die cutting specifications, the double-tile carton die-cutting effect is also better, is the ideal domestic packaging enterprises die-cutting means. And domestic and international application status in foreign countries. The initial die cutting is usually done on the platform press. Platform presses can be very precisely die-cut very complex die-cutting design. In recent years. The use of more efficient rotary die-cutting machine. Rotary die-cutting machine can process large cardboard. Production has been more than the platform floor machine; the new production of the factory is usually with the flexographic printing Wll, folding a bonding machine used.
Development and Application of Laser Die - cutting Technology

With the accelerated development of digital printing market, laser die cutting is no longer a model for the future, but has developed into a label printing enterprises can actually apply the technology. Introduction to Laser Die Cutting Technology Mike Bacon, Deputy Director of Marketing, Spartanics Laser Die Cutting Technology, said the era of laser die-cutting has come and is booming. Now, label printing companies began to laser die-cutting technology as a competitive advantage. At the same time, the material supply for laser die cutting technology is also growing rapidly. Laser die cutting technology has a very attractive property: speed. Note that this is not the cutting speed, die cutting speed of the advantages of the traditional die-cutting methods can be easily achieved, here is the emphasis on a single speed. Now more and more label printing enterprises to introduce digital presses, the post-track for a single die-cutting speed also put forward new requirements. Mike Bacon said that it's hard to imagine a label printing business for our customers to process 300 short orders per day. David Pung, vice president of sales for laser equipment at Las X Industries in the United States, emphasizes that laser die cutting is a continuation of the digital process, which begins with digital presses.
Development and Application Prospect of Magnetic Die - cutting Technology
In recent years, with the rapid development of cartons and label processing industry, customers and processors in the constant pursuit of excellent product quality and processing accuracy, but also continue to seek more efficient and more economical processing technology. In the production process of cartons and labels, die-cutting is an important post-press processing, scientific and technological progress, economic development and market demand growth have led to continuous improvement of die-cutting technology, the current financial crisis in the context of fierce market competition, Processors and equipment manufacturers are constantly innovating die-cutting technology. On-line round pressure die cutting technology with its high degree of automation, high production efficiency, equipment running smoothly, die cutting pressure and many other advantages, more and more paper and label processors are favored. At present, the round pressure round die cutting tool mainly has the overall die cutting roller and split type magnetic die cutter roll two forms. Compared with the overall die-cutting roller, magnetic die-cutting roller prices lower. As long as the length of the work piece die repeat, you do not need to replace the magnetic base roller, can greatly save the job preparation time, improve die cutting quality. Magnetic die-cutting technology has experienced more than 20 years of innovation and development, mature, showing a good application prospects. Progress of manufacturing technology of magnetic bottom roller and flexible die cutter The magnetic die cutting technology uses the principle of magnetic field, by placing a single permanent magnet piece in polarity, in the stainless steel roll (bottom roll)
New Technology of Laser Cutting and Cutting
The traditional label die-cutting process is the use of metal cutting tools, and now more and more use of laser beam for die-cutting. This article introduces the latest label die cutting technology. As early as 1985, people have begun to use laser technology on the adhesive composite label separation test. However, its processing speed and accuracy are not able to meet the actual production requirements. After 15 years of research and development, today's label laser die-cutting technology has matured, and for the actual production use, its performance and prices have begun to be accepted. Fundamentals According to the different applications of "active media", lasers can be called gas lasers, liquid lasers and solid lasers. The medium refers to the use of it to produce a laser beam. CO2 gas laser commonly used in laser die cutting. The problem, however, is the use of "open" or "closed" systems. · Closed system: no problems and maintenance-free, but limited service life. With a closed system can reach 200W of laser power. The open system is also known as the "axis laser" because the gas must be continuously supplied. The system is free of wear and no power loss due to aging. From the laser power 200W, suitable for use with this system with gas supply. The open laser runs at a much higher cost than the closed system. Making this device form a significant high price. However, according to the manufacturer,
New Technology of Bernhall Cut - out Round Die
Quality, due to the smaller bending stress, for the uniform, smooth and beautiful. Knife blade refers to the middle of a line, color part, the upper part of the white. So indentation more roll is the black flip price since the 90's, packaging and printing development is extremely rapid. Multi-species, high-quality packaging printed matter, most of the use of the web version of the printing and home printing version of the printing completed. At the same time, in order to adapt to high-speed production legs. High-calf rounded round die-cutting technology also produced accordingly. Round pressure round die cutting technology is a kind of country Bai Cai Seoul company in the mid-60s invented, which is characterized by high die cutting speed, die-cutting roller long life Circle round core cutting technology can be divided into three basic types: one is the press-cutting (as shown in Figure 1; the other is the cut-off (that is, as shown in Figure 1; the third category for the package In Figure 1, c). Cut-type die-cutting is the core of the current "on the surface of the tongue," the surface of the stone, and the cut- 3 working principle of cutting circular die.