U.S. patent application number 14/269491 was filed with the patent office on 2014-08-28 for roof-greening sheet.
This patent application is currently assigned to RENEW SYSTEM CO., LTD. The applicant listed for this patent is RENEW SYSTEM CO., LTD. Invention is credited to Il-Kyu CHO, Jong-Yong LEE, Sang-Keun LEE.
Application Number | 20140242361 14/269491 |
Document ID | / |
Family ID | 44059779 |
Filed Date | 2014-08-28 |
United States Patent
Application |
20140242361 |
Kind Code |
A1 |
LEE; Sang-Keun ; et
al. |
August 28, 2014 |
ROOF-GREENING SHEET
Abstract
Disclosed therein is a sheet for green roof that includes a
copper or aluminum thin film or a nonwoven fabric having a
predetermined thickness firmly laminated on both sides of a glass
fabric having a predetermined area through an adhesive to prevent
the root growth of plants and maximizes insulation from moisture,
thermal insulation, and reduction of thermal conductivity, thereby
extending the lifetimes of the sheet, the waterproof layer and the
building structure.
Inventors: |
LEE; Sang-Keun;
(Gyeonggi-do, KR) ; LEE; Jong-Yong; (Seoul,
KR) ; CHO; Il-Kyu; (Geonggi-do, KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
RENEW SYSTEM CO., LTD |
SEOUL |
|
KR |
|
|
Assignee: |
RENEW SYSTEM CO., LTD
SEOUL
KR
|
Family ID: |
44059779 |
Appl. No.: |
14/269491 |
Filed: |
May 5, 2014 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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13500161 |
Apr 4, 2012 |
|
|
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PCT/KR2009/006894 |
Nov 23, 2009 |
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14269491 |
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Current U.S.
Class: |
428/212 |
Current CPC
Class: |
B32B 2419/06 20130101;
B32B 7/12 20130101; B32B 2262/101 20130101; Y02A 30/254 20180101;
B32B 15/20 20130101; Y10T 428/24942 20150115; B32B 15/082 20130101;
A01G 20/20 20180201; B32B 5/26 20130101; B32B 27/12 20130101; E04D
11/002 20130101; B32B 15/14 20130101; Y02B 80/32 20130101; B32B
2250/40 20130101 |
Class at
Publication: |
428/212 |
International
Class: |
E04D 11/00 20060101
E04D011/00 |
Claims
1. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a glass
fabric having a predetermined thickness and a predetermined area
and being coated with an adhesive on both sides thereof; and a
copper film having the same area of the glass fabric and being
integrally laminated on both sides of the glass fabric using
pressure.
2. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a glass
fabric; a copper film having the same area of the glass fabric and
being laminated on the one side of the glass fabric; and an
aluminum thin film having the same area of the glass fabricant
being integrally laminated on the other side of the glass fabric
using pressure.
3. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a glass
fabric; a copper film having the same area of the glass fabric and
being laminated on the one side of the glass fabric; and a nonwoven
fabric having the same area of the glass fabric and being
integrally laminated on the other side of the glass fabric using
pressure.
4. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a glass
fabric being coated with an adhesive on both sides thereof; and an
aluminum thin film having the same area of the glass fabric and
being firmly laminated on both sides of the glass fabric using
pressure.
5. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a copper film
being coated with an adhesive on both sides thereof; and a nonwoven
fabric and a PVC sheet having the same area of the copper film and
being firmly laminated on both sides of the copper film using
pressure.
6. A sheet for green roof, which is installed on the top of a
waterproof layer to prevent the root growth of plants in vegetation
of a green roof, the sheet for green roof comprising: a PVC sheet
being coated with an adhesive on both sides thereof; and a copper
film and a nonwoven fabric having the same area of the PVC sheet
and being laminated on both sides of the PVC sheet using pressure.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a sheet installed not only
to prevent the root growth of plants but also to provide a
waterproof seal when vegetating a building roof, and more
particularly, to a sheet for green roof including copper or
aluminum thin films or nonwoven fabrics firmly laminated on both
sides of a glass fabric using an adhesive to eliminate moisture and
maximize thermal insulation in vegetating a building roof.
[0003] 2. Background Art
[0004] As well known, green roofs involve growing plants on
rooftops for providing a vegetation environment in an urban area to
minimize air pollutions and provide the urban area with beautiful
views. To make the green roofs safe and stable, it is required to
establish a "safe foundation" on the building structure where the
green roofs are provided (that is, "planted"), as designed so that
the vegetation does not affect the structural stability and
durability of the building.
[0005] The establishment of a safe foundation includes forming a
waterproof layer, which is the most fundamental base constructed on
the rooftop of the building, and providing a root barrier material
for protection of the waterproof layer against the green roof
portion (e.g., plants, water, soil, manure, etc.). The primary
reason of establishing the root barrier material is the growth
control of the plant roots in vegetating the top of a building
structure, where the roots may grow vigorously penetrating into the
waterproof layer and into the building structure that is made up of
concrete, ending up with reduced lifetime of the building
structure.
[0006] To overcome this problem, a recent approach has been
developed to form a root barrier layer prior to construction of
green roofs. For example, a roof barrier method involves providing
a nonwoven fabric overlying the top of a drainage plate to keep the
drainage plate from being in direct contact with the waterproof
layer. The nonwoven fabric is a regular polyester nonwoven fabric
or a performance-improved polymer nonwoven fabric applied on the
drainage plate, only keeping the roots of plants from penetrating
into the water-storage space of the drainage plate without
deterioration of the drainage function of the drainage plate,
thereby only controlling the root growth of the plants. The plant
roots tend to penetrate into fine gaps and create a water path. But
the nonwoven fabric takes on a form susceptible to penetration of
the growing roots and thus cannot provide a good root barrier
function.
[0007] For protection of the waterproof layer from penetration of
plant roots, a PE film with stable chemical and physical properties
may be adhesively applied on the top of the waterproof layer to
form a root barrier layer for keeping the plant roots from growing
into the waterproof layer. The PE film has a joint portion to which
an adhesive or an adhesive tape is applied, so the joint portion
becomes a main weak point ready to form a water path because of its
poor adhesion stability, allowing the penetration of plant roots
and thus causing a deterioration of the root barrier function.
SUMMARY OF THE INVENTION
[0008] Accordingly, the present invention has been made to solve
the above-mentioned problems occurring in the prior arts, and it is
an object of the present invention to provide a sheet for green
roof that includes a copper or aluminum thin film or a nonwoven
fabric having a predetermined thickness firmly laminated on both
sides of a glass fabric having a predetermined area through an
adhesive to prevent the root growth of plants and maximizes a
moisture barrier function, thermal insulation and reduction of
thermal conductivity, thereby extending the lifetimes of the sheet,
the waterproof layer and the building structure.
[0009] To accomplish the above object, according to the present
invention, there is provided a sheet for green roof which is
installed on the top of a waterproof layer to prevent the root
growth of plants in vegetation of a green roof, the sheet for green
roof including a glass fabric having a predetermined thickness and
a predetermined area, and a copper film having the same area of the
glass fabric and being integrally laminated on both sides of the
glass fabric using pressure.
[0010] In another aspect of the present invention, a copper film
having the same area of the glass fabric is laminated on the one
side of the glass fabric, and an aluminum thin film having the same
area of the glass fabric is laminated on the other side of the
glass fabric using pressure.
[0011] In still another aspect of the present invention, a copper
film having the same area of the glass fabric is laminated on the
one side of the glass fabric, and a nonwoven fabric having the same
area of the glass fabric is integrally laminated on the other side
of the glass fabric using pressure.
[0012] As described above, the sheet for green roof according to
the present invention that has a firm dual-composite laminate of a
copper film and an aluminum thin film or a nonwoven fabric prevents
the root growth of plants during vegetation of the green roofs,
removes the moisture, minimizes thermal conductivity, enhances
thermal insulation, increases the lifetimes of the sheet and the
building structure, increases the economy efficiency and
workability to shorten the required construction time, and reduces
the maintenance cost.
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 is a schematic exploded perspective of a first
embodiment of the present invention.
[0014] FIG. 2 is an enlarged cross-section showing the first
embodiment of the present invention.
[0015] FIG. 3 is an enlarged cross-section showing a second
embodiment of the present invention.
[0016] FIG. 4 is an enlarged cross-section showing a third
embodiment of the present invention.
[0017] FIG. 5 is an enlarged cross-section showing a fourth
embodiment of the present invention.
[0018] FIG. 6 is an enlarged cross-section showing a fifth
embodiment of the present invention.
[0019] FIG. 7 is an enlarged cross-section showing a sixth
embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0020] According to the feature of the present invention, in a
sheet for green roof which is installed on the top of a waterproof
layer to prevent the root growth of plants in vegetation of a green
roof, the sheet for green roof includes a glass fabric having a
predetermined thickness and a predetermined area, and a copper film
having the same area of the glass fabric and being integrally
laminated on both sides of the glass fabric using pressure.
[0021] Reference will be now made in detail to the preferred
embodiment of the present invention with reference to the attached
drawings.
[0022] FIG. 1 is a schematic exploded perspective of a first
embodiment of the present invention; and FIGS. 2 to 7 are enlarged
cross-sections showing the first to sixth embodiments of the
present invention, respectively.
[0023] As illustrated in the figures, a sheet 100 for green roof
according to the present invention comprises a glass fabric 10, a
copper film 20, an aluminum thin film 30, a nonwoven fabric 40, and
a PVC sheet 50.
[0024] The glass fabric 10, which features high-temperature
durability, non-corrosiveness pertaining to resistance to
chemicals, high tensile strength, good thermal insulation, and low
thermal conductivity, is positioned at the center of the sheet 100
and provided as a core material having a predetermined area and a
predetermined thickness. The copper film 20 is made from copper as
a principal component into a thin film by rolling and provided in a
predetermined area and a predetermined thickness to make the copper
component suppress the growth point of the primary root, inhibiting
the vertical growth of lateral roots. This secures the root barrier
function and contributes to the stability against the growth of
plants.
[0025] The aluminum thin film 30 is made from industrial aluminum
into a thin film by rolling. Due to its excellence in heat
conservation and insulation, the aluminum thin film 30 is inserted
into the ceiling or walls of a building for the purpose of thermal
insulation, or laminated on a sheet as a means for reflecting light
and heat. Hence, the aluminum thin film 30 is provided in a
predetermined area and a predetermined thickness to prevent a heat
loss of the building structure.
[0026] The nonwoven fabric 40 is not made by weaving fibers but by
arranging fibers in parallel or at random and then bonding them
together with a synthetic resin adhesive into a felt structure. The
nonwoven fabric is made from a polypropylene (PP) or polyethylene
(PE) resin and provided in a predetermined area and a predetermined
thickness.
[0027] The PVC (also called "polyvinyl chloride resin") sheet 50 is
made from a homopolymer of vinyl chloride, or a copolymer
containing at least 50% vinyl chloride, and provided in a
predetermined area and a predetermined thickness for the
multi-purpose as a root barrier and waterproof seal to protect the
copper film 20 and provide a waterproofing function.
[0028] In a method of forming the sheet 100 using the
aforementioned materials, as shown in FIGS. 1 and 2, an adhesive is
applied on both sides of the glass fabric 10 having a predetermined
thickness and a predetermined area, and then the copper film 20
having the same area of the glass fabric 10 is firmly laminated on
both sides of the glass fabric 10 using pressure to complete the
three-layered sheet 100 for green root, which provides resistance
to external shocks and hence a root barrier function.
[0029] In another aspect, as shown in FIG. 3, an adhesive is
applied on both sides of the glass fabric 10 having a predetermined
thickness and a predetermined area, and then the copper film 20
having the same area of the glass fabric 10 is laminated on the one
side of the glass fabric 10 using pressure, while the aluminum thin
film 30 having the same area of the glass fabric 10 is integrally
laminated on the other side of the glass fabric 10 using pressure.
The sheet 100 thus completed provides a root barrier function,
reduces heat conductivity, and enhances thermal insulation.
[0030] In still another aspect, as shown in FIG. 4, an adhesive is
applied on both sides of the glass fabric 10 having a predetermined
thickness and a predetermined area, and then the copper film 20
having the same area of the glass fabric 10 is laminated on the one
side of the glass fabric 10 using pressure, while the nonwoven
fabric 40 having the same area of the glass fabric 10 is integrally
laminated on the other side of the glass fabric 10 using pressure.
The sheet 100 thus completed provides a root barrier function and
eliminates moisture.
[0031] In still another aspect, as shown in FIG. 5, an adhesive is
applied on both sides of the glass fabric 10 having a predetermined
thickness and a predetermined area, and then the aluminum thin film
30 having the same area of the glass fabric 10 is firmly laminated
on both sides of the glass fabric 10 using pressure. The sheet 100
thus completed is excellent in thermal insulation.
[0032] In still another aspect, as shown in FIG. 6, an adhesive is
applied on both sides of the copper film 20 having a predetermined
thickness and a predetermined area, and then the nonwoven fabric 40
having the same area of the copper film 20 is laminated on the one
side of the copper film 20 using pressure, while the PVC sheet 50
having the same area of the copper film 20 is integrally laminated
on the other side of the copper film 20 using pressure. The sheet
100 thus completed provides a root barrier function and eliminates
moisture.
[0033] In still further another aspect, as shown in FIG. 7, an
adhesive is applied on both sides of the PVC sheet 50 having a
predetermined thickness and a predetermined area, and then the
copper film 20 having the same area of the PVC sheet 50 is
laminated on the one side of the PVC sheet 50 using pressure, while
the nonwoven fabric 40 having the same area of the PVC sheet 50 is
integrally laminated on the other side of the PVC sheet 50 using
pressure. The sheet 100 thus completed provides a root barrier
function and eliminates moisture.
[0034] To construct green roofs using the sheet 100, a water
repellent with good adhesiveness is applied in a predetermined
thickness on the top of the waterproof layer of the green roof, and
then a plurality of sheets 100 cut out in a predetermined area are
firmly bonded to the coating of the water repellent, where the
consecutive connections between the sheets are combined together
using a copper tape. Then, a soil layer is provided on the top of
the sheets 100, and a variety of plants such as trees or flowering
plants are set into the soil layer to vegetate the green roofs.
[0035] The sheet for green roof according to the present invention
that includes a dual laminate structure of a copper film, an
aluminum thin film, or a nonwoven fabric can prevent the root
growth of plants in vegetation of green roofs, eliminate moisture,
minimize thermal conductivity, and enhance thermal insulation to
extend the lifetimes of the sheet and the building structure, with
enhanced economy efficiency and workability, and reduce the
construction time and the maintenance cost, which secures the high
industrial availability of the present invention.
* * * * *