A kind of manufacturing method and detection method of sealing sheet

Abstract

The invention discloses a sealing sheet, the sealing sheet is formed by compounding multiple layers of materials and comprises a printing layer, a supporting layer, a transition layer, a blocking layer and a heat sealing layer which are sequentially arranged from top to bottom; the printing layer and the transition layer are both PET layers, the supporting layer is a foamed PE layer, the blockinglayer is an aluminum foil layer, and the heat sealing layer is a PP layer. The manufacturing method of the sealing sheet comprises the following steps of: gluing and compounding the printing layer PETwith the foamed PE layer, gluing and compounding the transition layer PET with the aluminum foil layer to form a semi-finished product, gluing and compounding the semi-finished product the inner layer PP layer, and compounding with the foamed PE layer. The printing layer and the heat sealing layer can eliminate static electricity, improves the opening property and allows the sealing sheet to meetthe requirement of smoothness, thus ensuring that only one sealing sheet can be issued at a time without the phenomenon of multi-sheet adhesion, through the compounding sequence of the material, thesealing sheet can meet the requirements of good flatness without internal and external cocking, the requirements of an automatic packaging machine that the sealing sheet cannot be thrown out and the sealing is flat without folding when the sheet is sent out and the material is transported.

Description

technical field [0001] The invention relates to the technical field of sealing sheets, in particular to a manufacturing method and a detection method of sealing sheets. Background technique [0002] Electromagnetic induction sealing sheets are relatively common at present, and are generally used on the gasket under the bottle cap, without direct contact with the gasket, but through alternating eddy currents, the metal layer in the sealing sheet generates heat to melt the inner heat-sealing layer and the bottle mouth Or the mouth of the cup is glued together to achieve the purpose of sealing. [0003] The sealing sheet is applied to the packaging machine for batch automatic delivery of cups, batch automatic delivery of sheets, and automatic packaging. Generally, electromagnetic induction gaskets or sealing sheets cannot meet the requirements of overlapping batches and only issuing one sealing sheet at a time. In addition, general gaskets Due to the different thicknesses of t...

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Problems solved by technology

[0003] The sealing sheet is applied to the packaging machine for batch automatic cup delivery, batch automatic delivery, and automatic packaging. Generally, electromagnetic induction gaskets or sealing sheets cannot meet the requirements of overlapping batches and only sending one sealing sheet at a time. In addition, general gaskets Due to the different thickness of the inner and outer layers of the material or the sealing sheet, it is difficult to grasp the composite process parameters, and it is difficult to ensure the flatness of the sealing sheet without warping inside or outside. Because the packaging machine needs step-by-step rotation during the packaging process, if the sealing The sheet is warped outside, and the sealing sheet is easily thrown out in the cup slot, and the sealing sheet is warped inward or outward, so the flatness of heat sealing cannot be guaranteed, and the mouth of the heat-sealed cup is prone to wrinkles

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