A performance testing method and device for a plastic screw cap

Abstract

The invention relates to a performance testing method and a performance testing device for a plastic spiral cover. The device comprises a vertical-direction performance testing device and a horizontal-direction performance testing device; the vertical-direction performance testing device comprises an upper connecting converting head, an upper drawing die, a lower drawing die and a lower connecting converting head; the upper drawing die and the lower drawing die have cylinder structures; the side surface of the lower drawing die is provided with external threads matched with the plastic spiralcover to be detected; and an upper drawing die and a lower drawing die of the horizontal-direction performance testing device both have semi-cylinder structures which are connected in a matching way to form a cylinder structure; and the side surface of a cylinder is provided with external threads matched with the plastic spiral cover to be detected. The invention has the beneficial effects that the testing device has a novel and simple structure, and is convenient to use; the engagement strength in a vertical direction and the tensile strength in a horizontal direction on the spiral cover canbe tested by the device; furthermore, the testing method has high operability; and the tested data are accurate, specific and objective.

Description

[technical field] [0001] The invention relates to the technical field of performance testing of plastic screw caps, in particular to a performance testing method and device for plastic screw caps. [Background technique] [0002] With the emergence of plastics with various new properties and functions, more and more plastic products are widely used in various industries such as household appliances, automobiles, electromechanical, aerospace, ships, and daily necessities. As a kind of plastic products: although plastic lids are widely used to seal the openings of various containers, there are no relevant international or national unified requirements for the testing of various performances of plastic lids, and there is no one that is more effective. Representative test method for uniform evaluation of the performance of various plastic closures. [0003] At present, similar national and world standards only involve the use of traditional torque meters to test and inspect the ...

AI Technical Summary

Problems solved by technology

As a kind of plastic products: although plastic lids are widely used to seal the openings of various containers, there are no relevant international or national unified requirements for the testing of various performances of plastic lids, and there is no one that is more effective. Representative test method for uniform evaluation of the performance of various plastic lids

[0003] At present, similar national and world standards only involve the use of traditional torque meters to test and inspect the sealing and damage of products, and most of them can only record the maximum value of damage, but cannot reflect the corresponding process.

In addition, caps or similar products that are sealed in a threaded manner are actually subjected to both horizontal and vertical forces during use, and there are no relevant specific descriptions in the current standards and aspects, which makes the testing of similar products very uncertain. factor

Images