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Electromagnetic inductive composite aluminum foil seal gasket and manufacturing process therefor

A composite aluminum foil, electromagnetic induction technology, applied in the direction of adhesive type, film/sheet adhesive, epoxy resin glue, etc., to achieve the effect of not easy to fall off, improve printing quality, and improve temperature resistance

Inactive Publication Date: 2008-10-01
周凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electromagnetic induction composite aluminum foil sealing gasket and its manufacturing process to overcome the deficiencies in the prior art

Method used

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  • Electromagnetic inductive composite aluminum foil seal gasket and manufacturing process therefor
  • Electromagnetic inductive composite aluminum foil seal gasket and manufacturing process therefor

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Embodiment Construction

[0031] Such as figure 1 The electromagnetic induction composite aluminum foil sealing gasket shown is composed of tissue paper as the base material layer 1 and the aluminum foil layer 4 bonded by the adhesive layer 2. The upper surface of the aluminum foil layer 4 is coated with a sealing film layer 3, and the lower surface is coated with There is an adhesive sealing layer 5, and the adhesive layer 2 is made of rosin and / or terpene resin added to paraffin wax accounting for 1%-5% of the total amount of the adhesive. The sealing film layer 3 is made of BOPP or PET film, and characters or patterns are reverse printed on the surface of the BOPP or PET film. Adhesive is coated on the lower surface of the adhesive sealing layer 5 . The adhesive is prepared by mixing 60%-90% of epoxy resin and 10%-40% of vinyl acetate. One ten-thousandth to two ten-thousandths of the magnetic powder is added to the adhesive sealing layer (5) or / and the adhesive. It is advisable to use the same ra...

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Abstract

The invention belongs to the technical field of packaging material processing, in particular to an electromagnetic inductive composite aluminum foil sealing gasket used for sealing a packaging bottle. The product of the invention is composed of a substrate layer 1 which is made of cotton paper and an aluminum foil layer 4 and the two layers are bonded by an adhesive layer 2; a sealing membrane layer 3 is coated on the upper surface of the aluminum foil layer 4 and an adhesive sealing layer 5 is coated on the lower layer; the adhesive layer 2 is made of olefin added with colophony and/or terpene resin which accounts for 1 to 5 percent of the total adhesive. By adding the colophony and/or the terpene resin to the olefin, the temperature resistance property of the adhesive is improved and low temperature or high temperature can not cause the separation of the adhesive, thus improving the stability of the product. High voltage electric corona treatment (the voltage is not lower than 18,000V) is carried out to the surface of the aluminum foil layer by the manufacturing technique of the invention, thereby the adhesive force of a printing layer on the aluminum foil layer is increased, the quality of directly printing on the front surface of the aluminum foil is greatly improved and the printed layer is not easy to fall off.

Description

technical field [0001] The invention belongs to the technical field of packaging material processing, in particular to an electromagnetic induction composite aluminum foil sealing gasket used for sealing packaging bottles. Background technique [0002] Electromagnetic induction composite aluminum foil sealing gasket is to combine metal aluminum foil and sealing material through hot melt adhesive. Under electromagnetic induction, the aluminum foil is heated and melted to separate from the sealing material, and the sealing material is heated and pasted on the bottle mouth to achieve the purpose of sealing. Because the sealing tool is simple and effective, it is widely used in the bottle mouth sealing of bottled products such as medicine and food. [0003] At present, the hot melt adhesive used in the electromagnetic induction gasket is made of paraffin, and the liquid paraffin is easy to fall off when the temperature changes too much (for example, the temperature changes more ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B65D77/20B32B7/12B32B15/04B32B15/08B32B37/02B32B38/00B32B38/14B41M1/28C09J163/00C09J7/02
Inventor 周凯
Owner 周凯
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