FIELD: process engineering.
SUBSTANCE: invention relates to production of plastic anchor bolt used for rib control. Proposed method comprises drawing continuous fiber threads via bath filled with resin into mould with stationary bottom die and displacing top heated die. Note here that multiple inner and outer reinforcing threads are drawn into open die to twist them so that, at least, outer fibers are located, mainly, in spiral line. Then, die is closed to form the bolt by drawing and pressing.
EFFECT: higher strength of plastic anchor bolt.
5 cl, 7 dwg
| Title | Year | Author | Number |
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