U.S. patent application number 15/149965 was filed with the patent office on 2017-07-20 for back pad capable of color rendering end-of-life and manufacturing method thereof.
The applicant listed for this patent is San Fang Chemical Industry Co., Ltd.. Invention is credited to CHUNG-CHIH FENG, HSIN-RU SONG, LYANG-GUNG WANG, I-PENG YAO.
Application Number | 20170203407 15/149965 |
Document ID | / |
Family ID | 58608600 |
Filed Date | 2017-07-20 |
United States Patent
Application |
20170203407 |
Kind Code |
A1 |
FENG; CHUNG-CHIH ; et
al. |
July 20, 2017 |
BACK PAD CAPABLE OF COLOR RENDERING END-OF-LIFE AND MANUFACTURING
METHOD THEREOF
Abstract
A back pad capable of color rendering end-of-life includes an
absorption layer, a dye capsule layer and a carrier layer. The
absorption layer has a surface. The dye capsule layer is disposed
on the surface of the absorption layer. The carrier layer is
laminated onto the dye capsule layer. The dye capsule layer of the
present disclosure can be dissolved to release dyes after water
penetrates in the back pad, and the end-of-life of the back pad can
be easily determined through a color-rendering effect of the
dyes.
Inventors: |
FENG; CHUNG-CHIH; (Kaohsiung
City, TW) ; YAO; I-PENG; (Kaohsiung City, TW)
; WANG; LYANG-GUNG; (Kaohsiung City, TW) ; SONG;
HSIN-RU; (Kaohsiung City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
San Fang Chemical Industry Co., Ltd. |
Kaohsiung City |
|
TW |
|
|
Family ID: |
58608600 |
Appl. No.: |
15/149965 |
Filed: |
May 9, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B24B 37/24 20130101 |
International
Class: |
B24B 37/24 20060101
B24B037/24 |
Foreign Application Data
Date |
Code |
Application Number |
Jan 20, 2016 |
TW |
105101771 |
Claims
1. A back pad capable of color rendering end-of-life, comprising:
an absorption layer having a surface; a dye capsule layer disposed
on the surface of the absorption layer; and a carrier layer
laminated onto the dye capsule layer.
2. The back pad of claim 1, wherein the absorption layer is a
polyurethane (PU) film.
3. The back pad of claim 1, wherein the dye capsule layer includes
at least io one dye micro-capsule.
4. The back pad of claim 3, wherein a length of the dye
micro-capsule is in a range of 10 .mu.m to 100 .mu.m inclusive.
5. The back pad of claim 3, wherein the dye micro-capsule includes
a soluble capsule body and a dye disposed in the soluble capsule
body.
6. The back pad of claim 1, wherein a thickness of the dye capsule
layer is in a range of 10 .mu.m to 1000 .mu.m inclusive.
7. The back pad of claim 1, wherein a thickness of the dye capsule
layer is less than a thickness of the absorption layer.
8. The back pad of claim 1, wherein a thickness of the dye capsule
layer is less than a thickness of the carrier layer.
9. The back pad of claim 1, wherein the carrier layer is a gum
film.
10. The back pad of claim 1, further comprising an adhesive layer
disposed between the dye capsule layer and the carrier layer.
Description
FIELD
[0001] The disclosure relates to a back pad and manufacturing
method thereof, more particular to a back pad capable of color
rendering end-of-life and manufacturing method thereof.
BACKGROUND
[0002] Referring to FIG. 1, which shows a schematic view of a
grinding device having a conventional back pad disclosed by U.S.
Pat. No. 5,871,393. The grinding device 10 includes a lower base
plate 11, a back pad 12, a workpiece 13, an upper base plate 14, a
polishing pad 15, and a grinding slurry 16. The lower base plate 11
is opposite to the upper base plate 14. The back pad 12 is disposed
on the lower base plate 11, and the back pad 12 is used for bearing
and fixing the workpiece 13. The polishing pad 15 is fixed onto the
upper base plate 14, faced with the lower base plate 11, and is
used for polishing the workpiece 13.
[0003] The operation mode of the grinding device 10 is as follows.
First, the workpiece 13 is placed on the back pad 12, and the
workpiece 13 is absorbed by the back pad 12. Then, the upper base
plate 14 and the lower base plate 11 are rotated in opposite
directions, and meanwhile the upper base plate 14 is moved
downwards, so that the polishing pad 15 is in contact with a
surface of the workpiece 13; and the workpiece 13 can be polished
by continuously supplementing the grinding slurry 16 and under the
function of the polishing pad 15.
[0004] However, the back pad 12, after being used for a long time,
may be faced with the situation in which water penetrates in the
sheet and therefore causes damage to siphonage, so that an
adsorption force between the workpiece 13 and the back pad 12
deteriorates, further causing that the workpiece 13 cannot be
polished to be flat or may even fall into fall into pieces. The
occurrence of the foregoing water penetration is indicative of that
the back pad 12 reaches the end-of-life and must be changed.
[0005] However, because it is impossible to accurately acquire a
first time when the water penetration occurs, it is also impossible
to immediately change the back pad 12 at the first time when the
water penetration occurs, causing that a great amount of the
workpieces 13 are wasted due to poor polishing or crushing. Hence,
waste of the workpieces 13 can be avoided if the first time when
the water penetration occurs (that is, the end-of-life of the back
pad 12) is accurately determined and the back pad 12 is immediately
changed.
[0006] Based on the foregoing analysis, it is necessary to provide
a back pad capable of color rendering end-of-life and manufacturing
method thereof, so as to solve the foregoing deficiencies in the
prior art.
SUMMARY OF THE INVENTION
[0007] In accordance with one aspect of the present disclosure, a
back pad is capable of color rendering end-of-life includes an
absorption layer, a dye capsule layer and a carrier layer. The
absorption layer has a surface. The dye capsule layer is disposed
on the surface of the absorption layer. The carrier layer is
laminated onto the dye capsule layer.
[0008] In accordance with another aspect of the present disclosure,
a manufacturing method for a back pad capable of color rendering
end-of-life includes step in which an absorption layer is provided,
wherein the absorption layer has a surface. The method continues
with step in which a dye capsule layer is formed on the surface of
the absorption layer. The method continues with step in which a
carrier layer is laminated onto the dye capsule layer.
[0009] The dye capsule layer of the present disclosure can be
dissolved to release dyes after water penetrates in the back pad,
and the end-of-life of the back pad can be easily determined
through a color-rendering effect of the dyes.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Aspects of the present disclosure are understood from the
following detailed description when read with the accompanying
figures. It is emphasized that, in accordance with the standard
practice in the industry, various features are not drawn to scale.
In fact, the dimensions of the various features may be arbitrarily
increased or reduced for clarity of discussion.
[0011] FIG. 1 shows a schematic view of a grinding device having a
conventional back pad disclosed by U.S. Pat. No. 5,871,393.
[0012] FIG. 2 shows a schematic structural view of a back pad
capable of color rendering end-of-life according to the present
disclosure.
[0013] FIG. 3 shows a schematic structural view of a dye
micro-capsule according to the present disclosure.
[0014] FIG. 4 shows a schematic structural view of a back pad
according to another embodiment of the present disclosure.
[0015] FIG. 5 shows a schematic view of color rendering of a back
pad capable is of color rendering end-of-life in water penetration
according to the present disclosure.
[0016] FIG. 6 is a flow diagram of a manufacturing method for a
back pad capable of color rendering end-of-life according to the
present disclosure.
[0017] FIG. 7A shows a schematic view of an absorption layer in the
manufacturing method according to the present disclosure.
[0018] FIG. 7B shows a schematic view of forming a dye capsule
layer on a surface of an absorption layer according to the
manufacturing method of the present disclosure.
[0019] FIG. 7C shows a schematic view of laminating a carrier layer
onto a dye capsule layer according to the manufacturing method of
the present disclosure.
DETAILED DESCRIPTION OF THE INVENTION
[0020] It is to be understood that the following disclosure
provides many different embodiments or examples, for implementing
different features of various embodiments. Specific examples of
components and arrangements are described below to simplify the
present disclosure. The present disclosure may, however, be
embodied in many different forms and should not be construed as
being limited to the embodiments set forth herein; rather, these
embodiments are provided so that this description will be thorough
and complete, and will fully convey the present disclosure to those
of ordinary skill in the art. It will be apparent, however, that
one or more embodiments may be practiced without these specific
details.
[0021] In addition, the present disclosure may repeat reference
numerals and/or letters in the various examples. This repetition is
for the purpose of simplicity and clarity and does not in itself
dictate a relationship between the various embodiments and/or
configurations discussed.
[0022] It will be understood that singular forms "a", "an" and
"the" are intended is to include the plural forms as well, unless
the context clearly indicates otherwise.
[0023] Unless otherwise defined, all terms (including technical and
scientific terms) used herein have the same meaning as commonly
understood by one of ordinary skill in the art to which this
invention belongs. It will be further understood that terms; such
as those defined in commonly used dictionaries, should be
interpreted as having a meaning that is consistent with their
meaning in the context of the relevant art and the present
disclosure, and will not be interpreted in an idealized or overly
formal sense unless expressly so defined herein.
[0024] FIG. 2 shows a schematic structural view of a back pad
capable of color rendering end-of-life according to the present
disclosure.
[0025] Referring to FIG. 2, a back pad 20 capable of color
rendering end-of-life includes an absorption layer 21, a dye
capsule layer 22 and a carrier layer 23.
[0026] In this embodiment, the absorption layer 21 is a
polyurethane (PU) film, and the absorption layer 21 has a surface
21S.
[0027] The dye capsule layer 22 is disposed on the surface 21S of
the absorption layer 21, and the dye capsule layer 22 includes at
least one dye micro-capsule 221. In this embodiment, the dye
capsule layer 22 includes a plurality of dye micro-capsules
221.
[0028] FIG. 3 shows a schematic structural view of a dye
micro-capsule according to the present disclosure.
[0029] Referring to FIG. 3, the dye micro-capsule 221 includes a
soluble capsule body 221C and a dye 221D. The dye 221D is disposed
in the soluble capsule body 221C. In this embodiment, the soluble
capsule body 221C can be dissolved with io water and then releases
the dye 221D, so as to achieve a color-rendering effect.
[0030] Referring to FIG. 2 and FIG. 3 again, in order to maintain a
bonding strength between the carrier layer 23 and the absorption
layer 21 and the structural strength of the back pad 20 capable of
color rendering end-of-life, the thickness of the dye capsule layer
22 should not be excessively thin or excessively thick. Preferably,
a thickness of the dye capsule layer 22 should be controlled in a
range of 10 .mu.m to 1000 .mu.m inclusive, and the thickness of the
dye capsule layer 22 should be less than a thickness of the
absorption layer 21 and less than a thickness of the carrier layer
23.
[0031] In addition, to successfully control the thickness of the
dye capsule layer 22 in a range of 10 .mu.m to 1000 .mu.m
inclusive, preferably, a length of the dye micro-capsule 221 should
be controlled in a range of 10 .mu.m to 100 .mu.m inclusive.
[0032] The carrier layer 23 is laminated onto the dye capsule layer
22. In this embodiment, the carrier layer 23 is a gum film, and the
gum film can be directly laminated onto the dye capsule layer 22.
In addition, the back pad 20 capable of color rendering end-of-life
can also be laminated onto a grinding device (not shown) by means
of the gum film.
[0033] FIG. 4 shows a schematic structural view of a back pad
according to another embodiment of the present disclosure.
[0034] Referring to FIG. 4, in another embodiment, an adhesive
layer 24 can be disposed between the dye capsule layer 22 and the
carrier layer 23, so that the carrier layer 23 can be laminated
onto the dye capsule layer 22 through the adhesive layer 24.
Preferably, the adhesive layer 24 is a gum film or a paste, and a
material of the carrier layer 23 can be polyethylene terephthalate
(PET).
[0035] FIG. 5 shows a schematic view of color rendering of a back
pad capable of color rendering end-of-life in water penetration
according to the present disclosure.
[0036] Referring to FIG. 5, after water penetrates in the back pad
20 capable of color rendering end-of-life, the dye micro-capsules
221 of the dye capsule layer 22 can be dissolved with water and
then releases the dyes 221D, and the end-of-life of the back pad 20
can be easily determined through a color-rendering effect of the
dyes 221D.
[0037] FIG. 6 is a flow diagram of a manufacturing method for a
back pad capable of color rendering end-of-life according to the
present disclosure. FIG. 7A shows a schematic view of an absorption
layer in the manufacturing method according to the present
disclosure. FIG. 7B shows a schematic view of forming a dye capsule
is layer on a surface of an absorption layer according to the
manufacturing method of the present disclosure. FIG. 7C shows a
schematic view of laminating a carrier layer onto a dye capsule
layer according to the manufacturing method of the present
disclosure.
[0038] With reference to step S61 in FIG. 6 and FIG. 7A, an
absorption layer 21 is provided, and the absorption layer 21 has a
surface 21S. In this embodiment, the absorption layer 21 is a
polyurethane (PU) film.
[0039] With reference to step S62 in FIG. 6 and FIG. 7B, a dye
capsule layer 22 is formed on the surface 21S of the absorption
layer 21. In this step, the dye capsule layer 22 can be formed on
the surface 21S of the absorption layer 21 by means of either
coating or spraying.
[0040] In addition, the dye capsule layer 22 includes at least one
dye micro-capsule 221. In this embodiment, the dye capsule layer 22
includes a plurality of dye micro-capsules 221.
[0041] Referring to FIG. 3 and FIG. 7B again, the dye micro-capsule
221 includes a soluble capsule body 221C and a dye 221D. The dye
221D is disposed in the soluble capsule body 221C. In this
embodiment, the soluble capsule body 221C can be dissolved with
water and then releases the dye 221D, so as to achieve a
color-rendering effect.
[0042] With reference to step S63 in FIG. 6 and FIG. 7C, a carrier
layer 23 is laminated onto the dye capsule layer 22. In this
embodiment, the carrier layer 23 is a gum film, and the gum film
can be directly laminated onto the dye capsule layer 22.
[0043] Referring to FIG. 4 again, or, in another embodiment, an
adhesive layer 24 can be disposed between the dye capsule layer 22
and the carrier layer 23, so that the carrier layer 23 can be
laminated onto the dye capsule layer 22 through the adhesive layer
24. Preferably, the adhesive layer 24 is a gum film or a paste, and
a material of the carrier layer 23 can be polyethylene
terephthalate (PET).
[0044] Furthermore, the adhesive layer 24 can be disposed between
the dye is capsule layer 22 and the carrier layer 23 by using
either of the two methods as follows:
[0045] 1. In step S62, the adhesive layer 24 is disposed on the dye
capsule layer 22, so that the carrier layer 23 can be laminated
onto the dye capsule layer 22 through the adhesive layer 24 in step
S63.
[0046] 2. In step S63, the adhesive layer 24 is disposed on the
carrier layer 23, and the carrier layer 23 is then laminated onto
the dye capsule layer 22 through the adhesive layer 24.
[0047] Referring to FIG. 7C again, in order to maintain a bonding
strength between the carrier layer 23 and the absorption layer 21
and the structural strength of the back pad 20 capable of color
rendering end-of-life, the thickness of the dye capsule layer 22
should not be excessively thin or excessively thick. Preferably, a
thickness of the dye capsule layer 22 should be controlled in a
range of 10 .mu.m to 1000 .mu.m inclusive, and the thickness of the
dye capsule layer 22 should be less than a thickness of the
absorption layer 21 and less than a thickness of the carrier layer
23.
[0048] Furthermore, to successfully control the thickness of the
dye capsule layer 22 in a range of 10 .mu.m to 1000 .mu.m
inclusive, preferably, a length of the dye micro-capsule 221 should
be controlled in a range of 10 .mu.m to 100 .mu.m inclusive.
[0049] Moreover, the scope of the present application is not
intended to be limited to the particular embodiments of the
process, machine, manufacture, and composition of matter, means,
methods and steps described in the specification. As those skilled
in the art will readily appreciate form the present disclosure,
processes, machines, manufacture, compositions of matter, means,
methods, or steps, presently existing or later to be developed,
that perform substantially the same function or io achieve
substantially the same result as the corresponding embodiments
described herein may be utilized according to the present
disclosure.
[0050] Accordingly, the appended claims are intended to include
within their scope such processes, machines, manufacture, and
compositions of matter, means, methods or steps. In addition, each
claim constitutes a separate embodiment, and the is combination of
various claims and embodiments are within the scope of the
invention.
* * * * *