FABRIC PRICKLE MEASUREMENT TESTER

Abstract

A test device for determining the prickle property of the fabrics objectively includes nails on a measuring head fixed in an upper region of the test device, wherein the nails come in the contact with stiff fibers. The test device also includes an operation panel, a light source, a camera, a sample holder. The measurement uses a circular movement of the fabric instead of a linear movement unlike the previous studies. The measuring head does not apply any pressure on the fabric, only by lowering the measurement head, the nails squeezed in the head penetrate in the hairs of the fabric. In this situation, during the movement of the head, prickle force caused by the fiber ends can be detected. With the test device, it is possible to test both woven and knitted fabrics.

Claims

1. A test device for determining a prickle property of fabrics objectively, comprising nails and a measuring head fixed in an upper region of the test device, wherein the nails are on the measuring head and come in the contact with stiff fibers.

2. The test device according to claim 1, further comprising an operation panel, alight source, a camera, a sample holder, and a sample.

3. The test device according to claim 1, wherein the nails on the measuring head come in contact with the stiff fibers in a width of 5 to 25 mm of a sample.

4. The test device according to claim 1, wherein the nails on the measuring head come in contact with the stiff fibers on a sample with a height of 2 to 7 mm.

5. The test device according to claim 2, further comprising compression rings each with a diameter of 50 to 75 mm to prevent surface deformations.

6. The test device according to claim 2, wherein the sample holder has a thin plate on an outside for thin fabric samples.

7. The test device according to claim 1, wherein the nails are on a surface mounted inside the measuring head, and parts forming each of the nails are outside the measuring head.

8. The test device according to claim 1, wherein blocks containing a number the nails allocated in sections are fixed to the measuring head, wherein in each of the blocks, the number of the nails ranges from 1 to 4, and the nails are in a thin or flat body shape.

9. A test method for determining a prickle property of fabrics objectively, comprising performing a measurement with a circular friction force motion.

10. The test method according to claim 9, wherein for a measurement of a thick fabric sample, the test method further comprises the following steps: placing a felt on an outside of a sample holder, covering the thick fabric sample on the felt, compressing with a compression ring, and finally with a clamping ring, clamping the thick fabric sample and fixing the thick fabric sample.

11. The test device according to claim 2, wherein the nails on the measuring head come in contact with the stiff fibers in a width of 5 to 25 mm of the sample.

12. The test device according to claim 2, wherein the nails on the measuring head come in contact with the stiff fibers on the sample with a height of 2 to 7 mm.

13. The test device according to claim 2, wherein the nails are on a surface mounted inside the measuring head, and parts forming each of the nails are outside the measuring head.

14. The test device according to claim 2, wherein blocks containing a number the nails allocated in sections are fixed to the measuring head, wherein in each of the blocks, the number of the nails ranges from 1 to 4, and the nails are in a thin or flat body shape.

Description

DEFINITION OF THE FIGURES OF THE INVENTION

[0029] FIG. 1: Effects of different lengths of hairs (Previous Technique) (Ao et al., 2007)

[0030] FIG. 2: Technical drawing of the system developed by Donald James Ramsay (James Ramsay Donald, 2012) (Previous technique)

[0031] FIG. 3: One-side Fabric Compressing Tester (Ao et al., 2007) (Previous Technique)

[0032] FIG. 4: Schematic view of the Fabric Tactile Tester (FTT) (Previous Technique)

[0033] FIG. 5: Fabric Prickle Tester and its sections

[0034] FIG. 6: Demonstration of sample placement in the sample holder in thick fabric samples

[0035] FIG. 7: Compression rings of different diameters

[0036] FIG. 8: Acrylic plate and placing acrylic plate on the outer part of sample holder

[0037] FIG. 9: The lower part of the sample holder that is placed in the slot and the part where it is placed in the instrument

[0038] FIG. 10: The appearance of the structure forming the nail in the inner part of the measuring head (1.sup.st Model of Measurement head)

[0039] FIG. 11: Side and top views of 3 different measurement heads with 3 nails (in the 1.sup.st model)

[0040] FIG. 12: View of 3 measurement heads with different number of nails (in the 2.sup.nd model measurement head)

[0041] FIG. 13: View of the measurement head 1

[0042] FIG. 14: View of the measurement head 2

[0043] FIG. 15-18: Measuring heads ready for measurement by placing different numbers of nails on the measurement head 13

[0044] FIG. 19-21: Measuring heads ready for measurement by placing different numbers of nails on the measurement head 14

[0045] FIG. 22: Measuring heads for determination of roughness and prickle of the labels.

DEFINITIONS OF THE PARTS/ASPECTS/SECTIONS FORMING THE INVENTION

[0046] 1: Operation panel [0047] 2: Light Source [0048] 3: Camera [0049] 4: Sample Holder [0050] 5: Measurement Head [0051] 6: Thick Fabric Sample [0052] 7: Thin Fabric Sample [0053] 8: Outer Part of Sample Holder [0054] 9: Nonwoven felt [0055] 10: Compression Ring [0056] 11. Clamping Ring [0057] 12. Thin Plate [0058] 13. Back of Sample Holder [0059] 14. Slot of Sample Holder [0060] 15. Nail

[0061] a: Action of the length of fiber ends is less than or equal to the contact interspace (Previous Technique)

[0062] b: Action of the length of fiber ends is slightly longer than the contact interspace (Previous Technique)

[0063] c: Action of the length of fiber ends is remarkably longer than the contact interspace (Previous Technique)

[0064] d,e: Fiber ends giving sensations of prickle (Previous Technique)

DETAILED DESCRIPTION OF THE INVENTION

[0065] The invention is a test device that provides objectively determination of the fabric evoked prickle and consists of 6 basic parts (FIG. 5). These parts are operation panel (1), light source (2), camera (3), sample holder (4), measuring head (5) and sample (6,7). The device measures the moment due to the force created by the fibers causing prickle my means of the nails with a width of 5-25 mm.

[0066] In the device, a special sample holder (4) is used, which enables the measurement of samples having different thickness values (6,7). After the sample holder (4) is prepared outside the device by placing the sample (6,7) and the related parts, it is inserted in the insertion point of the device thus the load measurement sensors are prevented from being damaged due to overloading. The sample holder (4) can be easily moved outside the measurement area and inserted back. In order to be placed in the device, the back part (13) of the sample holder is placed on the insertion point (14) as shown in FIG. 9 and finally sample is ready for measurement.

[0067] Placement of thick fabric samples (6) in the sample holder (4) is given in FIG. 6. First, the felt (9) is placed on the outer part of the sample holder (8). Thick fabric samples (6) are also covered on the felt (9) and compressed with the compression ring (10). Finally, the sample is ready for measurement after clamping it with the clamping ring (11). Normally during clamping the holders, surface deformations such as wrinkling may occur on the surface of the sample. In this invention compression rings with different inner diameters, changing between 55 and 65 mm, were designed to create a homogeneous pressure on the edges of the fabric and to prevent the occurrence of potting and/or wrinkling on the surface due to the movement made to clamp the ring (FIG. 7).

[0068] In thin fabric samples (7), a thin plate (12) is placed on the outer part (8) of the sample holder, since all other parts are placed on the thin plate (12), the thin fabric sample (7) is prevented from collapsing to the bottom part and forming a wrinkle on the surface (FIG. 8). When placing thick samples (6), there is no need to use this thin plate (12).

[0069] During the measurement, a light source (2) and camera system (3) are integrated on the device to allow the control of the amount of penetration of the nails through the fiber ends on the fabric surface. By means of this system, it is also possible to check the nail penetration before measurements.

[0070] One of the different measuring heads (5) shown in FIG. 12 is attached to the part placed on the upper part of the measuring region before the measurement, depending on the type of fabric to be measured. Since the measuring head (5) is mounted on the upper part, the weight of the measuring head (5) has no effect on the measuring result, therefore, it is negligible.

[0071] Measuring heads (5) are available in two models. In the first model, the nail is on a surface and this surface is mounted on the inner side of the head, ensuring that the parts forming the nail (15) are outside the head and the measuring head is used in this integrated form. The structure of the nails (15) in this model is given in FIG. 10. The height and width of the nails (15) are designed to be adjusted as desired. There are 1-12 nails on the head and each nail have different width of neck parts. Nail height varies between 2-7 mm (FIG. 11).

[0072] In the second model, the blocks containing different shapes and numbers of nails are fixed by placing them in the sections allocated to the fixed measuring head, and this combined measuring head structure is used by mounting it on the device. Examples of measurement heads with different numbers of nails are given in FIG. 12.

[0073] The heads (5) are magnetically mounted on the upper part of the measurement zone and fixed before the measurement. Then the measurement is started, after pressing the “start” button in the computer software that is specially designed for the device.

[0074] During the measurement, the effect created by the friction force caused by the contact of the nails with the fiber ends and the vibration due to force fluctuation can be followed from the torq change curve on the screen. In order to enter other physical properties of the fabric, special areas are reserved in the program. The results can be taken in excel file format and automatically recorded by the device on the date of the test.

[0075] There are various measurement heads consisting different number of nails which also can be in different shapes. To place the nails on the gaps in the measurement heads, it is sufficient to tighten that area with a screw. Different design head productions were carried out to tighten the region where the nails will be placed on the header. The views of the produced measurement heads are given in FIG. 13 and FIG. 14.

[0076] The measurement heads, prepared by placing different number of nails in the head that is given in FIG. 13, are given in FIG. 15-18. Similarly measuring heads, prepared by placing different numbers of nails in the head that is given in FIG. 14, are given in FIG. 19-21. FIG. 22 indicates the design of measurement head to be used for the determination of roughness of different types of fabrics. The measurement head suggested for determining prickle of the labels in the clothes is also-showed in FIG. 22.

REFERENCES

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