1, according to the needs of their own products to choose the thickness of the tape, viscosity. Thin filmAdhesive tape: Material: PET, PVC, PP, TPU, PE and other films imported from Japan adhesive thickness: 0.05MM~2MM and other properties: high adhesion strength, good performance, excellent temperature resistance; It plays the role of fixing, sealing, insulation and noise reduction. Application field: automotive internal and external parts, electrical appliances, mobile phones, computers and other decorative parts, film switches, panels and product internal and external parts fixed.
2, transparent tape material -- bidirectional tensile polypropylene film (BOPP) BOPP is a very important flexible packaging material, widely used. BOPP membrane is colorless and odorlessTasteless, non-toxic, and has high tensile strength, impact strength, rigidity, toughness and good transparency, is a high-quality substrate for transparent tape.
3, the BOPP film for transparent tape is generally 50 microns thick. The density of BOPP can be calculated according to 0.9, a square meter is 45g, and a ton is 1000*1000/45=22222 square. BOPP is the abbreviation of "Biaxially Oriented Polypropylene", BOPP film is biaxially drawn polypropylene film.
4, a. transparentExcellent brightness and luster. b. In the packaging machinery can show good thermal adhesion, can achieve heat sealing. c. The texture is strong and tough, and the longitudinal and transverse tensile strength of the film is not much different, it is not easy to crack under pressure, and the elongation is large. d. High binding strength and impact resistance. e can cook, the stiffness of the thick film is good, and the inclusion sealing performance is excellent. f. Oil resistance, drug resistance is better.
1, polyethylene adhesive (PE. PPHR-733 HR-736 Wireless acrylic lenses : An adhesive that exists and is used in an oily state.
2, epoxy resin adhesive is a common adhesive wireless acrylic lens , with the following characteristics and applications: high strength: epoxy resin adhesive has a high strength and rigidity, can provide excellent bonding performance, can withstand large tensile, shear and compression forces. Chemical resistance: Epoxy resin adhesive has good chemical resistance, can be in acid, alkali, solvent and so onStable performance in harsh environments.
3, common instant glue (common -1203 instant drying glue - ethyl cyanoacrylate strong instant adhesive is a kind of), epoxy resin bonding class, anaerobic glue, UV glue (ultraviolet light curing class), hot melt adhesive, pressure sensitive adhesive, latex class. 2 The main components of the glue acrylate glue: A-cyanoacrylate instant drying glue, anaerobic glue, acrylic structural glue, ethyl acrylate adhesive, epoxy acrylate glue, other acrylate glue.
4, it is water as a medium, non-toxic and non-flammable, pollution-free, no danger, small odor, noPollute the environment, save energy, especially suitable for adhesion of substrates easily eroded by organic solvents. The viscosity is low, and the water soluble thickener and water can be adjusted, easy to operate, and the residue is easy to clean. It can be mixed with a variety of water-based resins to improve performance and reduce costs, but pay attention to ionic and acid-alkaline properties to prevent condensation.
5, ④ emulsion adhesive is mostly suspended in water, such as vinyl acetate resin, acrylic resin, chlorinated rubber and so on. ⑤ Solvent-free liquid adhesive is viscous liquid at room temperature, such as epoxy resin. Adhesive is the medium between the label material and the bonding substrate, acts as a link. According to its characteristics, it can be divided into permanent and removable two kinds. It has a variety of formulations, suitable for different surfaces and different occasions.
6, illustration introduction Wireless acrylic lens I commonly use more than 10 kinds of glue (adhesive) daily like to tink things at home, accumulate some experience with glue. See this forum rarely has a special introduction to glue posts, so send this post for your reference (think of where, where to write, we will take a look). See everyone mention glue, must mention 50 brothers good and so on. I used to love these a while agoThe role of filters The role of filters is very large, widely used in the photography industry. For example, if you want to use the camera to take a yellow flower, the background is blue sky, green leaves, if you take according to the usual, you can not highlight the theme of "yellow flower", because the image of yellow flower is not prominent enough.
2, the main application areas of filter: digital camera, camera, CCTV, mobile phone, security monitoring products, biochemical instrument, optical measuring instrument, enzyme label instrument, biometrics, infrared medical instrument, fluorescence analyzer, medical testing equipment, stage lighting, etc.
3, the use of the filter is very wide: biometric recognition, medical instrumentsEquipment, laser rangefinder, security monitoring, stage lighting special. Main materials are: quartz glass, colored glass, imported glass, float glass, PMMA. Practical are: float glass coated filter, PMMA material filter, low cost, durable.
4, endothermic filter Endothermic filter is to prevent the light source spectrum in the thermal radiation line damage to the optical filter group necessary. Excitation filters Excitation filters can selectively absorb long spectral lines and filters that absorb ultraviolet, purple, blue and green light are excitation filters.
5, the filter in the cameraThe main function of the machine is to filter the infrared in the light. Trim the incoming light. Shenzhen Eco Optoelectronic Technology Co., Ltd. produces and sells such filters (OLPF filters).
1, poor contact problem. First see if the power cord of the host and the display is stable, if it is relatively loose, this kind of flash screen will appear. Signal interference problem. Whether the cable connecting to the display has no shielding coil, or if there is no black bump that prevents interferenceThere is interference to the screen what process QQexternal.exe is. Also check whether there is interference nearby, such as high-power audio, power transformer.
2, if it is an ordinary display, the refresh rate is generally set to 85Hz, if it is a liquid crystal display, the refresh rate is generally set to 60Hz. If your computer used to be fine, but the screen has been blinking a lot lately, there may be a problem with the graphics card driver. The solution is to uninstall the video card driver and install it again. It can usually be solved. Of course, it may also be a hardware or virus problem, but it is less likely.
3This is when the mobile phone is shooting, the mobile phone has a shooting frequency, the LED lamp also has a frequency (50HZ or 60HZ), when the image frequency appears on the mobile phone and the frequency of the LED lamp multiplied frequency relationship, the image will flash. Shooting other scenery without a frequency relationship, there will be no flashing phenomenon, which is a normal physical phenomenon.
4, in fact, the main reason for the display screen jitter is that the display refresh frequency is set below 75Hz, at this time the screen often appears jitter flicker phenomenon, we only need to adjust the refresh rate to more than 75Hz, then the phenomenon of screen jitter will no longerThere are two graphics card drivers that are not correct sometimes when we enter the computer.
5, and LCD is the LCD board all the grid at the same time subject to the control voltage, just like the line is transmitted in parallel, so that a frame of the image is modulated instantaneously. Obviously, the two display scanning methods are different, and the scanning travel time spent is also different. LCDS complete a frame much faster than CRTS, and there is no problem of phosphors being extinguished when the electron beam is moved away from the current pixel. This is why LCDS are flicker-free.