In order to solve the problem of mutual matching between plastic bottles and caps, the Society of the Plastics Industry has developed a standard for plastic bottle necks.Bottles from the same series should match caps from the same series.
为了解决塑料瓶和瓶盖相互匹配的问题，塑料工业协会制定了塑料瓶颈标准。同系列的瓶子应匹配同系列的瓶盖。
Standard Neck Measurement 标准颈部测量
T - Outside diameter of the continuous thread.
E - Outside diameter of the finish shaft excluding thread.
I - The inside diameter of the finish at the smallest possible point.
S - The distance between the top of the finish to the top of the thread.
H - Height from the top of the finish to the bottom where it intersects with the shoulder.
P - The distance between the corresponding points of two adjacent threads.
T - 连续螺纹的外径。
E - 精加工轴的外径，不包括螺纹。
I - 在尽可能小的点上完成的内径。
S - 饰面顶部到螺纹顶部之间的距离。
H - 从饰面顶部到与肩部相交的底部的高度。
P - 两个相邻螺纹的对应点之间的距离。
Standard thread profile for plastic containers 塑料容器的标准螺纹牙型
The standard thread profile of plastic containers has two forms, "L" and "M" (see the figure below).
塑料容器的标准螺纹牙型有“L”和“M”两种形式（见下图）。
“L”
“M”
Generally, the thread profile of plastic containers is required to be designed according to the above standards. This standard can be extended to a matching lid design.
一般要求塑料容器的螺纹牙型按上述标准设计。该标准可以扩展到匹配的盖子设计。
Standard Neck Finish Sizes
In general, 18mm-28mm necks should use 410 series; those larger than 28mm should use 400 series; those smaller than 18mm should use 415 or 425 series according to product design requirements；The 444 series is usually not used.
一般来说，18mm-28mm的琴颈应该使用410系列；大于28mm的应使用400系列；小于18mm的应根据产品设计要求选用415或425系列；444系列一般不用。
Neck Finish is expressed as: Nominal Specifications-Series. For example, Neck Finish 20-410, means 410 series, with a nominal diameter of 20mm. Check the table below for other sizes of this specification.
颈部表面处理表示为：标称规格系列。例如，Neck Finish 20-410，表示 410 系列，标称直径为 20mm。查看下表了解此规格的其他尺寸。
If you still can't choose neck finish, then consult Somewang's packaging experts, and let Somewang give you the most suitable packaging solutions.
如果你还是不能选择颈饰，那就咨询一下Somewang的包装专家，让Somewang给你最合适的包装方案。
For more information on new products, please follow us or contact us!
请关注我们或联系我们以获得更多新品信息！