One text understands the mainstream six major radiation curing (UV / EB) adhesive

The UV binder can be roughly divided into two categories with substrate (tape, double-sided glue) and no substrate (liquid glue), and the latter is used in use, the former UV light irradiation can increase or reduce bonding Sex, UV subtractive tapes are used as temporary protection or temporary positioning, with great demand in microelectronics, optoelectronic devices, such as wafers, and touch screen glass processing industries.

1UV pressure sensitive adhesive (PSA)
PSA is currently manufactured by solution coating, drying and chemical reaction, more than 60% of solvents to volatilize, combustion, high emissions, long production process, low efficiency, and may remain harmful chemicals such as solvent in the product. The PSA was produced by UV curing, and after coating the solvent-free liquid component, it was made of photopolymerization with UV light irradiation, no heat bake, production line simplification, production process environmental, almost zero emissions, production efficiency Also greatly improved.
PSA products are diverse, from decorative membranes, various protective film to engineering structural tape, very wide, used in advertising boards, electronic products to high-end boxes.

2UV composite glue
Food, drinks and some biomedical products require high barrier packaging, blockage of packaging materials, determination and impact of edible time. The high barrier packaging material is made of plastic film with paper, metal film, has a high strength, good oxygen, and water-free, safe and sanitary, adaptable, can freeze and resist 120 ° C high temperature

Currently, composite plastic in the soft packaging industry is almost all solvent-type adhesives, the mass of solvents> 70%, the composite process is passed through the process steps of coating, solvent volatilize, composite, storage and ripening, except for flammable, explosive, emissions, The production process is long, the efficiency is low, and there is still a solvent in the composite film. Every time, the exquisite packaging needs, the holiday period of delivery, many composite packaging films do not fully react and thoroughly volatilize clean solvent delivery, residual solvents and unreacted complete chemicals may penetrate, pollute food, this is currently There is still a major reason for the health indicators of many medical and food packaging. Waterborne binder although there is no solvent, dry dryness, low production efficiency, is not ideal for plastic biding properties.

The solvent-based adhesive is replaced with UV adhesive, not only the productivity of the composite film will be greatly improved, and it can be completed by the original production process to a minute; UV adhesive does not contain solvent, no volatile There is no harmful residue, which ensures the health and hygiene requirements of the composite film to achieve food, medicine and other packaging materials. Wait for several or ten hours, during this period, the construction site cannot be used. If there is no such a photocurable binder, there is no such problem, and the photocurable rubber can be applied to the ground, and the ultraviolet will be used after the level. Light is cured, the surface has viscous, and then the PVC floor can be used immediately, not only greatly shortening the construction period, but also the entire production process has no solvent volatilization, no contamination of indoor air.

3UV architectural glue
Safety glass mainly uses polyvinyl butyral membrane as a bonding material, and the glass sheet is bonded to the glass sheet, and the total production time takes more than ten hours. It is used to produce a mixture of photopolymerized liquid paste to produce a jugular safety glass using a seal, and the glue, natural light, and has a long time, but it is still a non-mainstream product, mainly in the low-end safety glass market. The liquid bonding method cannot be widely accepted, mainly the performance of the UV glue is still insufficient, and safety lacks trustworthy data. UV glue grows in the construction field, the shop kitchen window and decoration, the staples are using UV glue. With the improvement of performance, UV architects will have great development.

In recent years, the application of PVC stone-plastic flooring has been rapidly developed in China. The construction method is to first scrape a layer of adhesive on the construction ground, and then bond the PVC floor. PVC plastic floor plastic is mainly divided into a watermulus, solvent type, and reactive type 3. The water emulsion adhesive uses water to dispersion medium, and the product is non-toxic and low cost. However, the water resistance is poor, and the adhesive force is reduced, such as an aqueous acrylate after soaking. Solvent type adhesive is mainly a polyvinyl acetate and a neoprene adhesive. The reactive type has a polyurethane series adhesive. This type of adhesive is required after construction.

4UV electronic glue

The electronic product field has been used in a large number of UV gums, including cable positioning, tube feet seal, preparation of liquid crystal panels, mobile phone buttons, etc., UV curing bonding is a technical means to be used in electronic product manufacturing. With the thin layer of electronic products, the adaptive volume of the roll process has huge demand for the UV binder of the roll process of the electronics, the emergence of flexible curved display devices. UV curing efficient, fast, timely, and controllable features will be fully displayed.

5UV optical glue
The touch screen is currently the maximum single application of UV optical rubber. The UV optical adhesive in the touch screen has three functions: bonding, increasing light transmittance and improving the resistance, requires strict performance requirements, including color, weather resistance, and environmental stability, electrical performance, optical performance, etc. The adhesive material involved in the touch screen is mainly: glass, ITO conductive layer, PET, PMMA, PC, etc. When the touch screen is used with sapphire, a UV glue that will require a higher refractive index will require a higher refractive property.

There is currently a liquid (LOCA) and solid (OCA) optical glue, the former, the former, and the glass cover, the level and filled, and it has good filling, The advantages of the glue, but it is necessary to make a spilicizing cleaning; OCA is a bilateral PSA without substrate, and the upper and lower films are removed. When using, the light-free film is removed, then remove the cryopremal film, then remove the cryoplasia A sticky face fit. The liquid glue employed earlier in the previous touch screen is thermally curing, the production process is long, the efficiency is low, and now it has been transformed into UV cured glue. The current OCA is also a conventional solvent-based glue through coating, drying, heat crosslinking process, dried long, dust, etc. Modified UV curing processes will greatly improve production efficiency, reduce equipment input and production costs.

6UV medical glue
UV glue has great growth space in the medical field, such as medical pressure sensitive adhesive or tape to UV curing, and can form a series of products.
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