JP-7857023-B2 - Peeling test apparatus

JP7857023B2JP 7857023 B2JP7857023 B2JP 7857023B2JP-7857023-B2

Inventors

星埜由典

Assignees

協和界面科学株式会社

Dates

Publication Date: 20260512
Application Date: 20230508

Claims (16)

A peel test apparatus for peeling a test film from an adherend surface that extends in the direction of its surface length, wherein the test film is attached to the adherend surface along the direction of its surface length, and one end of the test film that is separated from the adherend surface is pulled to peel the test film from the adherend surface, The adherend that forms the adherend surface, A base for supporting the object to be attached, A test film holder is positioned on the base and holds one end of the test film, A linear moving body is positioned on the base and moves the adherend linearly relative to the base in a vertical direction such that the adherend approaches and separates from the test film holder, A rotating support is interposed between the linearly moving body and the adherend, allowing the adherend to rotate relative to the linearly moving body about a pivot center axis that intersects the surface length direction and the vertical direction and extends in the height direction which is the film width direction of the test film attached to the adherend surface, A sliding mechanism that slides the object to be attached in the direction of the surface length relative to the linear moving body and the rotating support, A load measuring device for measuring the longitudinal load when the test film peels off from the adhered surface, Equipped with, The aforementioned sliding mechanism is A direction changing member is provided on the aforementioned rotating support, and is centered on the direction changing axis extending in the height direction, A transmission member which is a bendable linear member, belt, or chain that is wound around the direction changing member and has one end supported on the base side or the test film holder side and the other end supported on the adherend side, and transmits tension acting on it to the adherend as the linear moving member moves away from the test film holder, thereby sliding the adherend toward the side in which the test film peels away from the adherend surface, A peeling test apparatus having a peeling test device.
The peeling test apparatus according to claim 1, wherein the distance between the direction change axis and the rotation center axis is 5 mm or less.
The peeling test apparatus according to claim 2, wherein the direction change axis and the rotation center axis are arranged coaxially.
The peel test apparatus according to any one of claims 1 to 3, wherein the direction-changing axis is always located between one end and the other end in the surface length direction of the adherend that is slid by the sliding mechanism, as viewed from the height direction.
When defining the sliding movement of the test film by the sliding mechanism toward the side where the test film peels off in the plane length direction as a sliding movement toward the positive side, the peeling test apparatus according to any one of claims 1 to 3 further comprises a biasing member that biases the adherend toward the opposite side, which is opposite to the positive side.
The peel test apparatus according to claim 5, wherein the biasing force of the biasing member is greater than the gravitational force acting on the adherend when the vertical direction coincides with the vertical direction.
The base side is provided with a one-end support portion that supports one end of the transmission member, and the attached object side is provided with a other-end support portion that supports the other end of the transmission member. The peel test apparatus according to any one of claims 1 to 3, wherein the one-end support portion is movable in the vertical direction relative to the base, and/or the other-end support portion is movable in the plane length direction relative to the object to be adhered.
The peeling test apparatus according to any one of claims 1 to 3, wherein the peeling position on the adherend surface where the test film peels off from the adherend surface is located near the rotational center axis.
The peel test apparatus according to any one of claims 1 to 3, wherein the test film holder is movable in the vertical direction relative to the base.
The peeling test apparatus according to claim 9, wherein the peeling position on the adherend surface where the test film peels off is located at a position different from the rotational center axis.
When the direction changing member is a pulley, the nominal diameter of the pulley is defined as the diameter of the changing member; when the direction changing member is a timing pulley or a gear, the pitch circle diameter is defined as the diameter of the changing member. The peeling test apparatus according to any one of claims 1 to 3, wherein the diameter of the conversion member is 30 mm or less.
The peeling test apparatus according to any one of claims 1 to 3, wherein the transmission member is a metal wire.
The transmission member is a timing belt. The peeling test apparatus according to any one of claims 1 to 3, wherein the direction changing member is a timing pulley.
The peeling test apparatus according to claim 1, further comprising a peeling phenomenon measuring sensor provided on the rotating support or the linearly moving body, which measures a physical quantity generated at the peeling position on the adherend surface when the test film peels off from the adherend surface.
A peel test apparatus for peeling a test film from an adherend surface that extends in the direction of its surface length, wherein the test film is attached to the adherend surface along the direction of its surface length, and one end of the test film that is separated from the adherend surface is pulled to peel the test film from the adherend surface, The adherend that forms the adherend surface, A base for supporting the object to be attached, A test film holder is positioned on the base and holds one end of the test film, A linear moving body is positioned on the base and moves the adherend linearly relative to the base in a vertical direction such that the adherend approaches and separates from the test film holder, A rotating support is interposed between the linearly moving body and the adherend, allowing the adherend to rotate relative to the linearly moving body about a pivot center axis that intersects the surface length direction and the vertical direction and extends in the height direction which is the film width direction of the test film attached to the adherend surface, A sliding mechanism that slides the object to be attached in the direction of the surface length relative to the linear moving body and the rotating support, A peeling phenomenon measuring sensor provided on the rotating support or the linear moving body, which measures a physical quantity generated at the peeling position on the adherend surface when the test film peels off from the adherend surface, A peel test apparatus equipped with the following features.
The peeling phenomenon measuring sensor is provided on the linearly moving body. The peeling test apparatus according to claim 14 or 15, wherein the peeling position on the adhered surface where the test film peels off from the adhered surface is located near the rotational center axis.

Description

This invention relates to a peel test apparatus used for peeling a test film from an adherend surface. Traditionally, peel tests have been conducted to measure the adhesive strength of adhesive tapes and sheets, and the peel-resistance strength of adhesives. For example, JIS Z 0237 specifies 90-degree peel tests and 180-degree peel tests. Patent Document 1 describes an apparatus for performing a peel test at a 90-degree peel angle. This apparatus ensures test accuracy by maintaining a 90-degree peel angle while simultaneously separating the test object from the adhesive on the base by lifting the test object and base via a lifting platform. Japanese Patent Publication No. 2006-194599 This is an overall top view of a peel test apparatus according to an embodiment of the present invention.This is an overall top view of the peel test apparatus described above, showing the state after the peeling of the test film has progressed compared to the state shown in Figure 1.This is an overall top view of the peeling test apparatus, showing the state in which the peeling angle θ is changed from the state shown in Figure 1.This is an overall side view of the peeling test apparatus, shown as viewed from the direction of arrow I in Figure 1.This schematic diagram shows the movement of the slide mechanism when the peeling angle of the peeling test apparatus described above is changed, where (a) shows the case where the peeling angle is the angle shown in Figure 1, and (b) shows the case where the peeling angle θ is the angle shown in Figure 3.This is an overall top view of the peeling test apparatus according to a modified example 1 of the above embodiment.This is a schematic diagram showing the slide movement mechanism of a peeling test apparatus according to a modified example 2 of the above embodiment. Embodiments of the present invention will be described in detail below with reference to the drawings. (Overall structure) As shown in Figures 1 and 2, the peel test apparatus 100 is a device that, with the test film T attached to the adherend surface 1x, pulls one end Ta of the test film T that is separated from the adherend surface 1x to peel the test film T from the adherend surface 1x. The peel test apparatus 100 comprises an adherend 1 that forms the adherend surface 1x to which the test film T is attached, a base 2 that supports the adherend 1, a test film holder 3 that holds the test film T on the base 2, a load measuring device 4 that measures the load when the test film T peels off from the adherend 1, a linear moving body 5 and a rotating support 6 interposed between the adherend 1 and the base 2, a sliding movement mechanism 7 that slides the adherend 1 relative to the linear moving body 5 and the rotating support 6, and a peel phenomenon measuring sensor 8 provided on the rotating support 6. The test film T is, for example, an adhesive tape, and the surface facing one side in the tape thickness direction is the adhesive surface B. (adherent) The adherend 1 is rod-shaped or plate-shaped and forms a planar adherend surface 1x extending in its longitudinal direction. The adhesive surface B of the test film T can be adhered to the adherend surface 1x. Hereinafter, the longitudinal direction of the adherend 1 is defined as the surface length direction D1 of the adherend surface 1x. The test film T is attached to the adherend surface 1x along this surface length direction D1. (Base) The base 2 is positioned on one side of the object to be attached 1 in the height direction D2, which intersects the surface length direction D1 and is aligned with the surface to be attached 1x. The base 2 supports the object to be attached 1 so that it can move and rotate via a linear moving body 5 and a rotating support 6, which will be described in detail later. In this embodiment, the height direction D2 may be, for example, aligned vertically or horizontally, and the orientation of the peel test apparatus 100 is not particularly limited. However, in the following description, we will assume that the height direction D2 is aligned vertically, i.e., that the base 2 is located at the lowest point of the peel test apparatus 100. (Test film holder) The test film holder 3 is positioned on one side of the vertical direction D3, which intersects the plane length direction D1 and the height direction D2, that is, on the side facing the adherend surface 1x of the adherend 1 (the upper side when viewed from the plane of the paper in Figure 1). The test film holder 3 is also positioned on the base 2, on the other side (upper side) of the height direction D2 relative to the base 2, and is connected to the load measuring device 4, which will be described in detail later. The test film holder 3 has a planar holding surface 3a that faces one side of the plane length direction D1 (the right side when viewed from the plane of the paper in Figure 1). When the adhesive surface B of one end Ta of the test film T is attached to this holding surface 3a a