The invention relates to the technical field of battery cover protective sleeves, in particular to a 
processing technology for a battery cover protective sleeve. The 
processing technology includes the following steps that firstly, a thin film is prepared; secondly, an ink layer is printed and dried; thirdly, a removable 
adhesive layer is printed and dried; fourthly, a positioning hole is punched; fifthly, the thin film is put into a mold; sixthly, 
silicon rubber is put into the mold; seventhly, the mold is closed, and forming is achieved; eighthly, a semi-finished product attached to the 
silicon rubber is taken out; ninthly, the semi-finished product is cooled, and the 
silicon rubber is taken down; and finally, the outline is punched. The battery cover protective sleeve manufactured through the 
processing technology has the advantages of being small in thickness, stable in outline size and good in 
toughness and strength, and therefore the battery cover protective sleeve can be tightly matched with a battery and a battery 
machine case, and light leakage of the battery cover protective sleeve can be avoided. The processing technology for the battery cover protective sleeve has the characteristics of being simple, low in production cost and suitable for large-scale production.