JPS62273434A - Cylinder sticking type forcibly peeling measurement method and apparatus for adhesion - Google Patents

Abstract

PURPOSE:To measure adhesion of a tape, by peeling the tape at a fixed speed with a variable motor at the other end thereof after it is stuck on a cylindrical surface of a drum. CONSTITUTION:The other end of a sample tape 14 stuck on a drum 1 is fixed on a parallel square body 25 containing a parallel spring 21 and a thread bar 24 is driven to rotate with a peeling motor 17. A moving table 22 retracts together with the square body 25 and the tape 14 is peeled gradually being tracted. A coil spring 27 at the rear end of the square body 25 is linked to a micrometer 20 for shift loads and the top of the square body 25 is fixed to a member 26 through a differential transformer 18 and a micrometer 19 for zero-point adjustment. Prior to the start of a test, the tension of the tape 14 is measured with the meter 20 and the start point of the table 22 is set to zero with the meter 19. Then, when a peeling force is applied to the tape 14 with a variable speed motor 17, the top of the spring 21 is pulled by the tape and falls forward as shown by the broken line. The current displacement of the top of the spring 21 is detected with a micrometer not illustrated as connected to the transformer 18 and the adhesion of the tape is measured from the results and the spring constant of the spring 21.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention The present invention relates to a cylindrical adhesion measuring method and device, and more particularly to a method and device for measuring adhesion in which a sample tape is forcibly peeled off during a test. .

Conventionally, there are various methods for testing the effectiveness of adhesive tapes, but there are many industrial problems, such as the ball rolling method specified in JIS, which does not match actual usage conditions. To resolve these issues, the many factors that appear to influence adhesion must be analyzed.

The factors include, if the cylinder is attached using a mold, the pressure of the sample tape on the cylinder, the tension applied to the tape, the speed of attachment,
Pasting depends on the surface material and condition, peeling speed, peeling direction, etc.

In order to eliminate the impractical aspects of the conventional measurement methods, the present invention utilizes an adhesive force measurement method and a measuring device for the forcibly peeled cylindrical attachment of adhesive tape, which can freely control and determine the above-mentioned factors. provide.

One embodiment of the invention is described in detail below in conjunction with the drawings.

First, the adhesive force measuring device of the present invention will be explained in terms of its configuration.

As shown in FIG. 1, the main shaft 13 of the apparatus frame 1) passes through the center of A variable speed motor 9 that drives this main shaft 13 is attached. The above tape is attached directly above the drum 1, for example, by JI
A pressing rubber roller 4 having a weight of 2 kg is set according to S.

The pressure roller 4 is connected to an adjustment weight 5 at the other end via a U-shaped support 17 and a rond. The pressing force of the roller 4 against the sample tape can be adjusted by changing the position of the adjusting weight 5. A tension pulley 2 is provided on the opposite side of the apparatus frame 1) from the adjustment weight 5 so as to be in series with the drum 1 for tape application. This pulley 2 is rotatably supported by a shaft passing through the frame 1). A string is wound around this boo IJ 2, one end of the string is fixed to the free end of the sample tape 14 on the drum l, a tension weight 3 is fixed to the other end, and the weight 3 hangs freely. be done.

A pasting angle control pulley 6 and a scale plate 7 are mounted on the main shaft 13 within the device frame 1). A linear encoder 8 is operatively connected to the end of the main shaft 13 opposite the drum, to which a counter, for example a digital encoder 10, is functionally connected.

JIS requires that a drum made of stainless steel be used for attaching the tape, but it is possible to replace the drum with a surface made of other materials such as Bakelite or porcelain.

Next, the cylindrical pasting type adhesive force measurement method according to the present invention will be described. J, will be described in conjunction with the drawings together with the lateral parts.

To attach the tape, the tension weight 3 is removed from the free end of the sample tape 14 attached to the drum L, and is instead fixed to a parallel short body 25 containing a parallel spring 21 (see Figure 2).
. Next, the peeling motor 17 is rotated to rotate the threaded rod 24, and the movable table 22 is moved back together with the parallel short body 25. As a result, the sample tape 14 is pulled and gradually peeled off. The retraction speed of the moving table can be made constant or variable by adjusting the operation of the motor 17.

In reality, at the moment when the sample tape I4 starts moving from the drum I, the balance between the tape's adhesive strength and tension is lost, and the end of the tape vibrates.

A coil spring 27 is attached to the rear end of the parallel short body 25 for applying a preload to the sample tape 14. The rear end of this coil spring is connected to a shift load micrometer 2o attached to a fixing member 26 at the rear end of the stand 23, as shown in the figure. The upper part of the parallel short body 25 is fixed to the fixing member 26 via a differential transformer I8 and a micrometer 19 for adjusting the atmospheric point. When starting the test, the tension of the sample tape 14 is measured in advance using the micrometer 20, and the tension of the sample tape 14 is measured using the micrometer 19.
Let the start position of 2 be zero. When a peeling force is applied to the tape by the variable speed motor 17, the upper part of the parallel spring 21 is pulled by the tape and falls forward (see the broken line). The amount of displacement of the upper end of the parallel spring at this time is detected and determined by the differential transformer 18, an electric micrometer connected thereto, and a printer (both not shown). Adhesive force can be determined by knowing the spring constant of the parallel spring.

In this application, the tape is forcibly peeled off at a constant speed.
There is also a free type 91 model 1i that peels off by applying a constant load.

[Brief explanation of drawings]

FIG. 1 shows the method of applying the tape to the drum in the adhesive force measurement test of the present invention, and FIG. 2 shows the method of the forced peeling test of the tape.

Claims (2)

[Claims] (1) Affix one end of the sample tape to the cylindrical surface of a tape applicator drum fixed to one end of the main shaft rotated by a variable speed motor, position this end on the vertical top surface of the core drum, and place the pressure roller on the core drum. Place the sample tape vertically above the drum, hold one end of the tape, leave the other end of the tape free, and pull it in a nearly horizontal direction, rotate the drum, and paste the sample tape on the cylindrical surface of the drum. A cylindrical attachment type adhesive force measurement method comprising the steps of: attaching the cylindrical adhesive, then releasing the free other end, attaching it to a parallel spring, and peeling off the free other end at a constant speed using the variable speed motor. (2) a tape application drum having a cylindrical surface to which the test tape is applied; a pressure roller positioned vertically above the drum and in circumferential contact with the drum; a free end of the tape applied to the application drum; a tension pulley around which a traction string is wound, a parallel spring to which the free end is fixed in order to pull the free end during peeling, a movable table on which the parallel spring is supported, and a movable table for moving the table. A cylindrical adhesion measuring device consisting of a threaded rod and a peeling motor designed to peel off the tape.