Processing technology of adhesive tape

Abstract

The invention discloses a processing technology of an adhesive tape and relates to the field of chemical technologies. The processing technology of the adhesive tape comprises processes of cutting and polishing, cleaning, fixed-length stitching, punching and preparation and smearing of a pressure-sensitive adhesive. During the fixed-length stitching process, a teflon sealing film is taken and cut into a tape which has equal width as a BOPP original tape, and the tape is placed onto a conveyor; after heated and softened at 60-68 DEG C, the tape is pressed onto the BOPP original tape at the pressure of 1-2 MPa; and BOPP original tapes are pressed at the interval of 10-15 cm on the tape-shaped teflon sealing film so as to obtain a composite film. The technology is simple. A fixed quantity of the tape can be torn. After the BOPP original tape and the sealing film are pressed together, characteristics of the BOPP transparent original tape such as good viscidity, lightness and thinness, etc. can be maintained, and the problem that an opening is not easy to find when in use and fingers easily touch glue so as to influence viscidity can be solved by the use of the sealing film. After the transparent adhesive tape is pasted, the sealing film is stretched, and on the basis of the transparent adhesive tape, the sealing film is coated. Thus, the problem that the sealing film is easy to break is solved, and sealing waterproofness of the transparent adhesive tape is also enhanced. Advantages of both the sealing film and the transparent adhesive tape are combined.

Description

technical field [0001] The invention relates to the field of chemical technology, in particular to a processing technology of an adhesive tape. Background technique [0002] Scotch tape was invented by Richard Drew in St. Paul, Minnesota, USA in 1928. Adhesive tapes can be divided into high temperature tapes, double-sided tapes, insulating tapes, special tapes, pressure-sensitive tapes, and die-cut tapes according to their functions. Different functions are suitable for different industry needs. The surface of the tape is coated with a layer of adhesive. To make the tape stick to objects, the earliest adhesives came from animals and plants. In the nineteenth century, rubber was the main component of the adhesive; and modern times, various polymers are widely used. Adhesives can stick things because of their own properties. A bond is formed between the molecules and the molecules of the object to be connected. This bond can firmly bond the molecules together. The composition...

AI Technical Summary

Problems solved by technology

Adhesive tapes can be divided into high temperature tapes, double-sided tapes, insulating tapes, special tapes, pressure-sensitive tapes, and die-cut tapes according to their functions. Different functions are suitable for different industry needs. The surface of the tape is coated with a layer of adhesive. To make the tape stick to objects, the earliest adhesives came from animals and plants. In the nineteenth century, rubber was the main component of the adhesive; and modern times, various polymers are widely used. Adhesives can stick things because of their own properties. A bond is formed between the molecules and the molecules of the object to be connected. This bond can firmly bond the molecules together. The composition of the adhesive varies from different brands and types, and there are various polymers. Among them, BOPP The basic raw material is polypropylene, and ethylene-propylene binary copolymer or ethylene-propylene-butylene terpolymer is added at the same time. According to the different functions of BOPP, different functional additives are added such as: antistatic masterbatch, smooth masterbatch , stiffening masterbatch, anti-reflection masterbatch, pearlescent masterbatch, whitening masterbatch, anti-adhesion masterbatch, synthetic paper masterbatch, anti-fogging masterbatch, matting masterbatch, anti-oxidation masterbatch, etc. BOPP is daily transparent The commonly used base material for tapes, Parafilm sealing film can quickly and effectively seal experimental vessels, has waterproof and moisture-proof properties, can effectively prevent sample volatilization and pollution, can effectively protect anhydrous substances, and has good toughness. It can be stretched to nearly twice the length, and only partially recovers after removing the stretching force. As the temperature rises, the flexibility and softness increase accordingly, but it is not resistant to high temperatures. It will soften and become viscous at 68°C. After stretching It is easy to be punctured by sharp objects, and the patent No. 200810132962.7 discloses a kind of easy-to-tear adhesive tape manufacturing process, including the following steps: 1) warp-knitted mesh cloth: use a weft-inserted warp-knitting machine to warp-knit the warp and weft in full-width weft-inserted, weave 2) heat setting and finishing: heat-treat the above-mentioned mesh fabric, and use a sizing agent on the sizing machine for sizing treatment; 3) composite: the front and back sides are directly coated with high-temperature melting resin to obtain 3 layers Structural film shape base material; 4) Glue coating: directly coat the pressure sensitive adhesive on the base material and dry or apply the pressure sensitive adhesive to the release base material before drying and then transfer and compound to the 3-layer structure A viscous adhesive tape is obtained on the base material. The beneficial effect of the present invention is that the adhesive tape produced by the process of the present invention can be torn horizontally with a slight force during use, and can be torn directly without special tools, and The horizontal torn part is neat, so that the appearance of the pasted material is neat and beautiful, it is safe and convenient to use, improves work efficiency, and reduces the cost of working hours, but this kind of adhesive tape is not strong, the toughness is poor, it is difficult to find the opening, and it is easy to stick to the fingers Glue, poor waterproof seal