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Processing technology of adhesive tape

A processing technology and tape technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of high temperature resistance, easy to be punctured by sharp objects, etc., to achieve quality assurance, reasonable structure ratio , the effect of simple process

Inactive Publication Date: 2015-04-29
丹阳恒安化学科技研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of processing technology of adhesive tape, described processing technology comprises the steps:

[0020] (1) Take the original BOPP belt as the base material, cut it into a block with a width of 6cm and a length of 30cm, and after high-voltage corona, use a grinding wheel to grind both sides of the original BOPP belt into a rough surface;

[0021] (2) Wipe the surface of one side of the polished BOPP belt with acetone, ethanol and deionized water respectively;

[0022] (3) Take the Parafilm sealing film, cut it into a strip with the same width as the original BOPP tape and place it on the conveyor. After heating and softening at 60°C, press 2MPa onto the original BOPP tape, and press it on the Parafilm sealing film every 10cm A piece of BOPP raw tape to obtain a composite film;

[0023] (4) Use a needle punch to punch a vertical dotted line hole 1cm behind the original BOPP tape on the composite film.

[0024] (5) Add 10wt% polyisobutylene to the acrylate, he...

Embodiment 2

[0026] Example 2: The rest is the same as in Example 1, except that in step (1), the original BOPP tape is cut into blocks with a width of 20 cm and a length of 30 cm, polished with metallographic sandpaper, and the Parafilm is sealed in step (3) After the film is heated and softened at 68°C, a piece of BOPP original tape is pressed on the Parafilm sealing film at an interval of 15cm. In step (5), the pressure-sensitive adhesive is obtained after heating to 320°C in the reaction kettle and cooling to 34°C. In (6), the thickness of the pressure-sensitive adhesive is 0.03mm, and the total blowing time is 1min.

Embodiment 3

[0027] Example 3: The rest is the same as in Example 1, except that in step (1), the original BOPP tape is cut into a width of 10 cm and polished with metallographic sandpaper; 1MPa pressurized onto the original BOPP tape, and a piece of BOPP original tape was pressed on the Parafilm sealing film at an interval of 13cm. In step (5), it was heated to 300°C in the reaction kettle and cooled to 35°C. Adhesive, in step (6), the thickness of the pressure-sensitive adhesive is 0.04mm.

[0028] In the above three examples, the three types of film were completely wrapped on the paper balls and tested under high-humidity environments with a humidity of 50%, 70%, and 90%, respectively. After 5 days, 4 days, and 1 day, the paper balls Completely wet, 10 times stronger waterproof and sealing performance than ordinary scotch tape. The experimenters tore 23cm long this tape and ordinary tape respectively within 1 minute. As a result, 20 pieces of this tape can be torn, but only 2 ordi...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C09J4/02C09J4/06C09J11/06B32B37/06B32B38/04
Inventor 陈国平夏方方杜成铭陈丽庆王霞张梁吴涛英荆吉仁夏新开王海大
Owner 丹阳恒安化学科技研究所有限公司
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