3. Bottle structure
Bottle mouth thread: Blow molding plastic parts thread generally use round or trapezoidal section thread. In order to ensure that the flash on the parting surface does not affect the screwing of the thread, the thread can be designed as an incomplete and intermittent structure. As shown in Figure 46a. Blow-molded caps and finishes can also be flanged (as shown in Figure 46b) and convex (as shown in Figure 46c). Plastic bottle mouth standard thread can refer to Figure 47 and Table 5.
Bottle mouth thread: Blow molding plastic parts thread generally use round or trapezoidal section thread. In order to ensure that the flash on the parting surface does not affect the screwing of the thread, the thread can be designed as an incomplete and intermittent structure. As shown in Figure 46a. Blow-molded caps and finishes can also be flanged (as shown in Figure 46b) and convex (as shown in Figure 46c). Plastic bottle mouth standard thread can refer to Figure 47 and Table 5.
Blow bottles for liquid packaging, in order to prevent the leakage of the bottle mouth, are often sealed with a combination of inner and outer lids, generally with a ring-type inner lid (shown in Figure 48a) and a stopper-type inner lid (shown in Figure 48b. ), withdrawal type inner cover (shown in Fig. 48e) and hybrid inner cover.
(to be continued)
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