Currently, the vacuum system is gradually being usedin the pattern industry because of the advantages of it. Forwith a number of stereotypes, using the method of escape of gas transmissionis not thorough, due complicated mold pleasing texture, pointsdead (dead pocket) causing the air cannot escape completely.The vacuum methods have overcome these issuesThe image above presents a structure summary of the system, including:+ The lead track to air out 1 grooved gas surroundedthe perimeter of the mold.+ 1 external gaskets from rubber to insulate between the lipsthe field outside and inside the mold, making side airIn addition to not be placed in the mold.+ Gas reservoir trench: design of the vent to connect with foot pumpdo not.
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