|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 265 인용 특허 : 0|
A mushroom-type hook strip for a hook-and-loop fastener has a flexible backing of thermoplastic resin and, integral with backing, an array of upstanding stems distributed across at least one face of the backing, each having a mushroom head. The stems have a molecular orientation as evidenced by a birefringence value of at least 0.001. The mushroom-type hook strip can be produced continuously by injecting resin into cavitites of a cylindrical mold while evacuating and cooling the cavities so that the cooled resin becomes molecularly oriented, thus affordi...
A mushroom-type hook strip that can be used in a hook-and-loop mechanical fastener, said strip comprising a homogeneous backing of thermoplastic resin and, integral with said backing, an array of upstanding stems distributed across at least one face of the backing, each of said stems having a base adjacent said backing and a mushroom head at the end of the stem opposite said backing, said stems having a molecular orientation as evidenced by a birefrigence value of at least 0.001.