|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||428/402 ; 106/312 ; 521/920 ; 264/301 ; 264/302 ; 264/310 ; 264/311|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 7 인용 특허 : 10|
Spherical particles having a diameter between 0.007" and 0.040" are formed from melt extruded thermoplastic material formed of blended and melt extruded thermoplastic and pigment.
[ What is claimed:] [1.] A process for manufacturing plastic shells comprising the steps of providing a charge of thermoplastic microspheres melt blended with pigment, said pigment comprising less than 5% by weight, said microspheres having an outside diameter in the range of 0.007" to 0.040"; providing a mold; placing said charge of microspheres into said mold; melt flowing the material into a shape corresponding to the mold surface and cooling the molded shape to remove said shape from the mold.