Methods and apparatus for determining a crush strength of an edge

    公开(公告)号:US11549872B2

    公开(公告)日:2023-01-10

    申请号:US16537004

    申请日:2019-08-09

    Abstract: A test apparatus comprises a probe movably mounted relative to a carrier. The probe comprises an end portion with a surface area of about 5 mm2 or less. The test apparatus can be used in methods of determining a crush strength of an edge of a substrate. Methods can comprise aligning the probe with a test location of the substrate at a predetermined angle relative to a probe axis. Methods can further comprise applying a mechanical force to the test location with the probe in the direction of the probe axis. Also, methods can comprise increasing the mechanical force applied by the probe until the substrate cracks or a predefined force applied by the probe is reached. Based on the mechanical force applied by the probe, a crush strength of an edge can be determined.

    ADHESIVE COMPOSITIONS AND KITS FOR APPLICATION OF SCREEN PROTECTORS

    公开(公告)号:US20220411665A1

    公开(公告)日:2022-12-29

    申请号:US17778726

    申请日:2020-11-24

    Abstract: A screen protector application kit includes a glass-based substrate (110) having an adhesive belt (270) and an adhesive container (478) of an uncured adhesive composition. The adhesive belt (270) includes a first major surface (272) adhered to the glass-based substrate (110), a second major surface (274), a distal edge (276) extending between the first major surface (272) and the second major surface (274), and a proximal edge (278) extending between the first major surface (272) and the second major surface (274). The uncured adhesive composition includes 30 wt % to 99.9 wt % of at least one of: (i) a monomer; and (ii) an oligomer; and 0.01 wt % to 10 wt % of a visible-light photoinitiator. The uncured adhesive composition may further include 0.1 wt % to 10 wt % of a co-initiator. The uncured adhesive composition may further include 0.1 wt % to 5 wt % of an oxygen inhibitor.

    METHODS AND APPARATUS FOR DETERMINING A CRUSH STRENGTH OF AN EDGE

    公开(公告)号:US20200056968A1

    公开(公告)日:2020-02-20

    申请号:US16537004

    申请日:2019-08-09

    Abstract: A test apparatus comprises a probe movably mounted relative to a carrier. The probe comprises an end portion with a surface area of about 5 mm2 or less. The test apparatus can be used in methods of determining a crush strength of an edge of a substrate. Methods can comprise aligning the probe with a test location of the substrate at a predetermined angle relative to a probe axis. Methods can further comprise applying a mechanical force to the test location with the probe in the direction of the probe axis. Also, methods can comprise increasing the mechanical force applied by the probe until the substrate cracks or a predefined force applied by the probe is reached. Based on the mechanical force applied by the probe, a crush strength of an edge can be determined.

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