Overview of the hottest pressure sensitive protect

2022-07-23
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In the process of test, because there will be to read and write the data acquisition card, the specific fracture, such as emergency stop, tense curve drawing process, so they as a child module respectively articulated in the test procedure under the main module. It is not very different from other ordinary pressure-sensitive adhesive products, but it has its own characteristics. They are:

1 Suitable adhesion for different material surface characteristics

2. It has good weather resistance and processability, and the peeling force (adhesion) changes little after a few months or long pasting, so it is easy to peel off

3. It is inert to the surface of the protected material, does not react with the surface, and does not corrode or pollute the surface of the material

4. It has good adhesion to the protected materials. During the material handling and processing, the protective film will not fall off and warp

5. The pressure-sensitive adhesive has high bonding strength with the substrate, and there is no pressure-sensitive adhesive residue when stripped off

6. The substrate and pressure-sensitive adhesive have excellent mechanical properties to meet various secondary processing requirements

today, the technicians will share with you the summarized safe protective equipment and maintenance methods. The plastic film was later called Pressure-sensitive protective film by insiders. Its main function is to prevent the protected materials from being scratched and polluted during manufacturing, handling, storage and secondary processing. The product has various varieties and different performances, and has a broad market prospect. However, there was no domestic supply of this product at that time; Second, there is no such technology; Third, there is no coating machine that can produce this kind of protective material in China. To make a breakthrough in this technology, the following three aspects must be studied:

1 Synthesis and manufacturing technology of pressure sensitive adhesive for lotion acrylate protective film with weak adhesion

2. Coating, drying, winding and cutting technologies based on polyolefin plastic film

3. Design and manufacture coating machine capable of producing polyolefin plastic substrate protective film

based on the above research, breakthroughs have been made in the following aspects:

1 Fully mastered the synthesis and manufacturing technology of pressure-sensitive adhesive for lotion acrylate protective film

2. The problem of adhesion between lotion pressure-sensitive adhesive and low surface matter polyethylene plastic film was solved. It ensures that the protective film will not degumm within one year's service life

3. It solves the technical problem that the adhesion between the pressure-sensitive adhesive and the protected material increases with the growth of the adhesion time, and ensures that the protective film is easy to peel off

4. Completely solved and mastered the technical difficulties of coating, drying, winding and cutting of thermoplastic substrate under heating state

5. A tension-free coater with a coating width of 1000mm was designed and manufactured, which created a good hard condition for the continuous industrial production of protective film

the protective film has the following characteristics:

1 The base material adopts black high-strength polyethylene plastic film to prevent ultraviolet radiation and improve weather resistance

2. The pressure-sensitive adhesive is natural rubber with a shelf life of only 6 months

3. The elongation of the base material is small and the tensile strength is large, so as to ensure that the protective film will not break, fall off or degumm under the alternating extrusion during the rolling process of the color plate

4. Pressure sensitive adhesive has a good industrial prospect in the field of new materials. It is solvent type to solve the problems of water resistance and long service life in the rolling process

in the 1990s, the domestic economy developed rapidly. The market demand for protective films has increased greatly, and users have gradually become mature. They understand that protective films with different properties should be selected according to the characteristics of different materials

after development, the third generation protective film technology came into being. This technology has the following characteristics:

1 Several different types of pressure-sensitive adhesive glue are available for selection to adapt to the surface characteristics of different protected materials. The prepared protective film is easier to meet the six characteristics of the protective film

2. The preparation is simpler, and a series of protective films with different peeling forces can be produced according to needs

3. The pressure-sensitive adhesive has stronger and more reliable binding fastness with polyethylene plastic film substrate

4. Test after setting value of protective film is increased (such as peeling or diversification of base materials.

in the mid-1990s, PVC plastic profile doors and windows were widely recognized in the domestic market for their excellent performance, beautiful appearance and moderate price. However, in the process of extrusion manufacturing, door and window assembly and welding, transportation, storage and building construction, due to many intermediate links, long service cycle and exposure to the open air, they are very easy to be scratched and faded by machinery, especially in the process of building construction Welding sparks and cement are easy to fall on the surface of plastic doors and windows, which is very difficult to remove. The result of hard scraping by traditional methods is to damage the surface of plastic doors and windows, damage the beautiful appearance, and give users a bad impression; On the other hand, due to the long construction period, plastic doors and windows are exposed outdoors for a long time, which is easy to fade and darken, giving users a sense of obsolescence

therefore, it is very important to vigorously promote the application of Pressure-sensitive protective film in this industry. So a new type of special protective film for plastic profiles was successfully developed. The protective film takes into account the characteristics of PVC material and the long processing and service cycle of doors and windows, and improves the initial adhesion, easy peeling and weather resistance of the pressure-sensitive adhesive. It has the following characteristics:

1 The protective film has good initial adhesion and is easy to adhere

2. Special materials are used to control the rapid adhesion of pressure-sensitive adhesive to the surface of PVC profile, so it is easy to peel off

3. Add antioxidant to slow down the aging speed of pressure-sensitive adhesive and ensure that the pressure-sensitive adhesive will not be degummed due to structural damage within the shelf life

4? Special anchoring technology is adopted to improve the bonding fastness between pressure-sensitive adhesive and substrate, so as to ensure that no degumming due to interface damage occurs within the shelf life

5. Pressure sensitive adhesives are all made of substances that are inert to PVC profiles to avoid affinity reaction and corrosion with PVC profiles

6. After a large number of scientific tests such as thermal aging, radiation aging, wet aging and natural storage tests, the protective film based on black-and-white coextrusion polyethylene film has been manufactured. Compared with the profile protective film based on milky white polyethylene plastic film, transparent polyethylene plastic film and BOPP plastic film, the protective film has better performance, better weather resistance and is easy to meet the characteristics of long manufacturing, processing and installation life cycle

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