|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 18 인용 특허 : 17|
A method of providing gas assistance to a plastic injection molding process including an initial burst of gas at the supply pressure.
1. A method of supplying gas from a gas source into a molten plastic injection molding apparatus comprising the steps of:injecting the gas into said molding apparatus for a first interval into a moving supply of plastic material at a point before said material enters an inlet of said apparatus without substantially diminishing the pressure of said gas from said gas source; injecting the gas into said molding apparatus at a second pressure lower than the pressure of said gas in said gas source for a second period substantially longer than said first inter...