Forming method of plastic deepgrip bottle

Abstract

The invention discloses a forming method of a plastic deepgrip bottle. The forming method is used for forming the plastic deepgrip bottle. A bottle body of the plastic deepgrip bottle is provided with a hand gripping position. The forming method comprises the following steps that firstly, a bottle blank is formed through the injection molding technique; secondly, an insert of a bottle blowing mold is located outside a mold cavity, the formed bottle blank is heated and then placed in the mold cavity of the bottle blowing mold, and the mold is subjected to mold assembly; thirdly, a sealing cylinder is made to descend, a bottle opening of the bottle blank is blocked by the sealing cylinder, and blowing is conducted on the interior of the bottle blank for the first time; fourthly, an insert cylinder drives the insert to move into the mold cavity so that the insert can be located in the hand gripping position of the mold cavity; and fifthly, the sealing cylinder is made to descend again and block the bottle opening of the bottle blank, blowing is conducted on the interior of the bottle blank for the second time, at this moment, the bottle body is formed, and the finished bottle is obtained. According to the forming method, the hand gripping position is formed while the bottle body is formed, no plastic injection part needs to be additionally produced, and thus the raw material cost and equipment operation cost can be reduced.

Description

technical field [0001] The invention relates to a blow molding method, in particular to a molding method of a plastic deep grip bottle. Background technique [0002] Existing plastics hold bottle deeply, and its handle and bottle body are split type, and handle is inlaid on the bottle body, and handle is generally colored parts (as red). [0003] This plastic deep-grip bottle is formed by the following method: first use the injection molding process to form the preform and the handle respectively, then put the preform and the handle into the blowing mold respectively, make the front mold move relative to the rear mold, and close the mold; The sealing cylinder is lowered, the sealing cylinder blocks the bottle mouth of the preform and blows air into the bottle, and the preform deforms and expands under the action of internal pressure until it matches the shape of the cavity of the mold, so that the bottle body is shaped and the finished product is obtained ; After that, the ...

AI Technical Summary

Problems solved by technology

[0004] This method of forming plastic deep-grip bottles requires an injection molding machine to produce handles, which not only requires high equipment costs, but also requires special personnel to operate, resulting in high production costs for plastic deep-grip bottles.

In addition, because the production materials of the handle and the bottle body are different, the production cost of the handle will be increased; and after the product is discarded, the handle and the bottle body need to be separated during the recycling process, which will undoubtedly increase the recycling cost of the product

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