Laser marking method for plastic bottle caps

Abstract

The invention discloses a laser marking method for plastic bottle caps. The laser marking method comprises the following steps that 1, the plastic bottle caps are placed on a production line and conveyed onto a laser marking platform through a conveying device, and a mechanical clamping jaw on the laser marking platform and a positioning part on each plastic bottle cap are matched so that the plastic bottle caps can be positioned; 2, laser beams sent from a laser marking machine near the laser marking platform are directly irradiated on top pieces of the plastic bottle caps, laser etching layers which can store product information are directly etched on the top pieces, and the laser etching layers are uneven two-dimensional code patterns formed on the top pieces which are subjected to laser beam etching; and 3, laser beam etching and marking are completed through the laser marking machine, the mechanical clamping jaw on the laser marking platform and the positioning part on each plastic bottle cap are separated, and the plastic bottle caps are sent to a material receiving device through the conveying device, so that material receiving is completed. The laser marking method for the plastic bottle caps is simple in process, healthy, safe and low in cost.

Description

【Technical field】 [0001] The invention relates to a method for laser marking plastic bottle caps. 【Background technique】 [0002] At present, plastic bottle caps are widely used in the market, especially in the food and beverage filling industry. At present, in order to trace or query the product information of the product, barcodes are usually printed on the bottle cap or body, but the barcode must be read by a specific reader, which is not convenient enough. At present, some manufacturers also carry out laser coding on bottle caps, and store product information (such as winning information, batch number information, etc.) in the identification code printed by the laser. Brush the adhesive layer, and then paste the gasket layer. After the laser beam passes through the gasket layer, the adhesive layer is burned and etched to form a unique text pattern logo, but the adhesive layer used contains chemical substances, and Glue is also used for pasting gaskets, so the harmful c...

AI Technical Summary

Problems solved by technology

In addition, at present, the connection between the plastic bottle cap and the bottleneck of the bottle body is generally a threaded connection, but such a connection may also be loose, and the tightness is not optimal.

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