KR20210095034A - Composite vertical protection net for winter season and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a composite vertical protection net for the winter season, and more specifically, to a composite vertical protection net for the winter season and a manufacturing method thereof, wherein the composite vertical protection net can block outside air, has excellent mechanical properties, durability and flame retardancy and, at the same time, exhibits appropriate peel strength so that a film substrate can be easily peeled off after the winter season. The composite vertical protection net also has excellent air permeability after removal of the film substrate and is recyclable.

Description

Composite vertical protection net for winter season and manufacturing method thereof

The present invention relates to a composite vertical protective net for the winter season, and more specifically, it can block outside air, and it has excellent mechanical properties, durability and flame retardancy, and at the same time exhibits appropriate peel strength, does not peel excessively with a small external force, and is easy after winter It relates to a composite vertical protective net for the winter season, which can peel off the film substrate, has excellent air permeability after removal of the film substrate, and can be recycled, and a method for manufacturing the same.

At the construction site, workers fall and fall, and falling objects such as various tools occur, and a protective net is installed when constructing a building for the safety of workers and citizens from these dangers. In order to prepare for safety accidents, the protective net must have excellent mechanical properties and be installed at a point where all safety accidents can occur.

On the other hand, in the case of the conventional vertical protection net, as an example, KR 10-2001-0090349 A was able to express certain mechanical properties, but in winter, a separate aphrodisiac must be additionally installed, or after installing the aphrodisiac after winter There was a problem that additional work was required to remove the membrane.

Accordingly, while the need for additional work to separately install and remove the aphrodisiac membrane is remarkably low, it can block the outside air, and it has excellent mechanical properties, durability and flame retardancy, and at the same time develops an appropriate peel strength, it does not peel off excessively with a small external force, It is urgent to develop a vertical protection net that can easily peel off the film substrate after the winter season, has excellent air permeability after removing the film substrate, and exhibits a recyclable effect.

KR 10-2001-0090349 A (published date: 2001.10.18.)

The present invention has been devised to solve the above problems, and the problem to be solved by the present invention is that it can block external air, and has excellent mechanical properties, durability, and flame retardancy, and at the same time expresses appropriate peel strength, excessively with a small external force. An object of the present invention is to provide a composite vertical protective net for the winter season that does not peel, can easily peel off the film substrate after the winter season, has excellent air permeability after removing the film substrate, and exhibits a recyclable effect, and a method for manufacturing the same.

In order to solve the above problems, the present invention provides a mesh-shaped first substrate; and a second substrate in the form of a film, wherein the first substrate and the second substrate may satisfy the following condition (1).

(One)

In this case, a is the glass transition temperature (°C) of the first substrate, b is the melting point (°C) of the first substrate, c is the glass transition temperature (°C) of the second substrate, and d is the melting point of the second substrate (°C).

In a preferred embodiment of the present invention, the first substrate may have a glass transition temperature of 50 to 90 °C and a melting point of 240 to 270 °C.

In a preferred embodiment of the present invention, 90° peel strength measured according to ASTM D3330 may be 0.092 to 0.4 N/25 mm and 180° peel strength may be 0.03 to 0.2 N/25 mm.

In a preferred embodiment of the present invention, the first substrate and the second substrate may have a thickness ratio of 1: 0.015 to 0.9.

In a preferred embodiment of the present invention, the first substrate may have an average pore diameter of 0.03 to 2.5 mm.

In a preferred embodiment of the present invention, the second substrate may contain 9 to 16% by weight of the flame retardant based on the total weight.

In a preferred embodiment of the present invention, an adhesive layer may not be included between the first and second substrates.

For another object of the present invention, a method for manufacturing a composite vertical protection net for winter includes the steps of thermally laminating a mesh-shaped first substrate and a film-shaped second substrate, wherein the first substrate and the second substrate are subjected to the following conditions ( 1) can be satisfied.

(One)

In this case, a is the glass transition temperature (°C) of the first substrate, b is the melting point (°C) of the first substrate, c is the glass transition temperature (°C) of the second substrate, and d is the melting point of the second substrate (°C).

As a preferred embodiment of the present invention, the thermal lamination may be performed at a temperature of 200 to 235° C., a pressure of 3 to 7K, and a speed of 45 to 75 m per minute.

The composite vertical protective net for winter and its manufacturing method according to the present invention can block outside air, and at the same time have excellent mechanical properties, durability and flame retardancy, and at the same time express appropriate peel strength, do not peel excessively with a small external force, and easily film after winter The base material can be peeled off, and the air permeability is excellent after the film base material is removed, and there is an effect that can be recycled.

1 is a cross-sectional schematic view of a composite vertical protection net for winter according to an embodiment of the present invention;
Figure 2 is a perspective view of a winter composite vertical protection net according to an embodiment of the present invention, a schematic view showing the peeling of the second substrate.

Hereinafter, the composite vertical protection net for winter of the present invention will be described in detail.

As the composite vertical protective net for winter of the present invention is shown in FIGS. 1 and 2, the composite vertical protective net (100, 100 ') for winter according to the present invention is a mesh-shaped first substrate 10 and a film-shaped second substrate (20) is implemented including.

On the other hand, prior to explaining each configuration of the composite vertical protection net for winter (100, 100 ') of the present invention, the first substrate 10 and the second substrate (20) of the composite vertical protection net for winter (100, 100 ') according to the present invention ) should satisfy the following condition (1).

When the glass transition temperature of the mesh-shaped first substrate is low or the melting point is low, mechanical properties and durability are deteriorated, or the film substrate cannot be easily peeled after winter because it cannot show an appropriate peel strength, or the air permeability even after removing the film substrate may be significantly lowered, and when the glass transition temperature of the first substrate is high or the melting point is high, mechanical properties and durability may be reduced. In addition, when the glass transition temperature of the film-shaped second substrate is low or the melting point is low, mechanical properties and durability are deteriorated, or appropriate peel strength cannot be exhibited, so that the film substrate cannot be easily peeled after the winter season, or the film substrate is removed Even after, the air permeability may be significantly lowered, and when the glass transition temperature of the second substrate is high or the melting point is high, the peel strength is lowered, so that the first substrate and the second substrate are excessively peeled even by a small external force. there is.

Accordingly, the first substrate 10 and the second substrate 20 of the composite vertical protection net 100, 100' for winter according to the present invention satisfy the following condition (1).

일 수 있고, 바람직하게는

일 수 있다.as condition (1)

may be, preferably

can be

In this case, a is the glass transition temperature (°C) of the first substrate, b is the melting point (°C) of the first substrate, c is the glass transition temperature (°C) of the second substrate, and d is the melting point of the second substrate (°C).

Also, preferably, the first substrate is a mesh-shaped substrate including warp, weft, and ground yarns, and a in condition (1) may be the glass transition temperature (°C) of the warp and weft of the first substrate. and b may be the melting point (°C) of the warp and weft yarns of the first substrate.

가 0.046 미만이면 기계적 물성 및 내구성이 저하되거나, 적정 박리강도를 나타낼 수 없어서 동절기 이후 용이하게 필름 기재의 박리가 불가하거나, 필름 기재 제거 후에도 통기도가 현격히 저하될 수 있고, 상기 조건 (1)에서

가 0.92를 초과하면 기계적 물성 및 내구성이 저하되거나, 적정 박리강도를 나타낼 수 없어서 동절기 이후 용이하게 필름 기재의 박리가 불가하고, 필름 기재 제거 후에도 통기도가 현격히 저하되거나, 제1기재와 제2기재가 작은 외력으로도 과도하게 박리되는 문제가 발생할 수 있다.If, in the above condition (1),

If is less than 0.046, mechanical properties and durability may be reduced, or appropriate peel strength cannot be exhibited, so that peeling of the film substrate is not possible easily after the winter season, or air permeability may be significantly reduced even after removal of the film substrate, and in the above condition (1)

If is greater than 0.92, mechanical properties and durability are deteriorated, or appropriate peel strength cannot be exhibited, so that the film substrate cannot be easily peeled off after the winter season. Excessive peeling may occur even with a small external force.

Meanwhile, the first substrate 10 and the second substrate 20 may further satisfy the following condition (2).

일 수 있고, 바람직하게는

일 수 있다.as condition (2)

may be, preferably

can be

In this case, b is the melting point of the first substrate (°C), d is the melting point of the second substrate (°C), and e is the 90° peel strength between the first substrate and the second substrate (N/25 mm) and f is 180° peel strength (N/25 mm) between the first and second substrates.

Also, preferably, the first substrate is a mesh-shaped substrate including warp yarns, weft yarns, and ground yarns, and b in condition (2) may be the melting point (°C) of the warp yarns and weft yarns of the first substrate.

가 4.8 미만이면 기계적 물성 및 내구성이 저하되거나, 적정 박리강도를 나타낼 수 없어서 동절기 이후 용이하게 필름 기재의 박리가 불가하거나, 필름 기재 제거 후에도 통기도가 현격히 저하될 수 있고, 조건 (2)에서

가 28을 초과하면 기계적 물성 및 내구성이 저하될 수 있으며, 제1기재와 제2기재가 작은 외력으로도 과도하게 박리되는 문제가 발생할 수 있다.If, in the above condition (2),

If is less than 4.8, mechanical properties and durability may deteriorate, or appropriate peel strength cannot be exhibited, so that peeling of the film substrate is not possible easily after the winter season, or the air permeability may be significantly reduced even after removal of the film substrate, under condition (2)

If is greater than 28, mechanical properties and durability may be deteriorated, and a problem in which the first and second substrates are excessively peeled off even by a small external force may occur.

On the other hand, the first substrate 10 and the second substrate 20 may have a thickness ratio of 1: 0.015 to 0.90, preferably, a thickness ratio of 1: 0.025 to 0.80. If the thickness ratio of the first substrate and the second substrate is less than 1:0.015, a problem may occur that the first substrate and the second substrate are excessively peeled even with a small external force, and if the thickness ratio exceeds 1:0.90, mechanical properties and Durability may be lowered, and proper peeling strength may not be exhibited, so it may not be possible to easily peel the second substrate after winter.

Hereinafter, each configuration of the composite vertical protection net (100, 100') for the winter of the present invention will be described.

First, the first base 10 will be described.

The first substrate 10 is a mesh-shaped substrate, and may be used without limitation, as long as it is a material that can be conventionally used for a vertical protection net in the art, and may preferably include polyethylene terephthalate (PET).

At this time, the first substrate 10 is preferably, inclined; weft; and ground yarn; may include.

Specifically, the slope may have a fineness of 250 to 3000 De, preferably 300 to 2200 De. If the fineness of the slope is less than 250 De, the mechanical properties and light fastness of the vertical protection net may be reduced, and if the fineness exceeds 3000 De, the flame retardancy of the vertical protection net may be reduced.

On the other hand, the weft yarn may be used in a mixture of multifilaments and monofilaments, preferably monofilaments may be used alone, but in terms of mechanical properties and light fastness, it may be more advantageous to use monofilaments alone.

On the other hand, as described above, the ground yarn is arranged to weave the warp and weft yarns, and covers at least a part of the core and the core surface, and at least a part of the fusible yarn including a covering portion having a lower melting point than the warp, weft and core yarns. It may be formed by fusion.

The screening and coating parts of the ground company are each independently, and can be used without limitation as long as they are materials commonly used in the art, and preferably polyester-based fibers, polyolefin-based fibers, polyamide-based fibers, acrylate-based fibers, etc. and, more preferably, a polyester-based fiber may be used, and more preferably, a polyethylene terephthalate fiber may be used.

In addition, the melting point of the coating portion may be lower than the warp, weft and core, preferably 190° C. or less, and more preferably 185° C. or less. If the melting point of the covering portion exceeds 190° C., it is not possible to selectively fuse only at least a portion of the temporary fusion yarn through a predetermined heat treatment, and as the warp, weft and core may be melted first, mechanical properties may be deteriorated.

The ground yarn is not limited as long as it has a fineness that can be commonly used in the art, and preferably has a fineness of 30 to 350 De, more preferably a fineness of 50 to 300 De. If the fineness of the ground yarn is less than 30 De, the desired level of mechanical properties and light fastness cannot be expressed, and if the fineness exceeds 350 De, flame retardancy may be reduced.

Meanwhile, according to another exemplary embodiment of the present invention, the ground yarn may be provided in a state in which the above-described temporary fusion spliced yarn is not fused, but is not limited thereto.

In addition, the ground yarn is not limited as long as it has a fineness that can be commonly used in the art, and preferably has a fineness of 30 to 350 De, more preferably a fineness of 50 to 300 De. If the fineness of the ground yarn is less than 30 De, the desired level of mechanical properties and light fastness cannot be expressed, and if the fineness exceeds 350 De, flame retardancy may be reduced.

On the other hand, the average pore diameter of the first substrate 10 is not limited as long as it is an average pore diameter of a vertical protection net that can be commonly applied in the art, and preferably the average pore diameter may be 0.03 to 2.5 mm, more preferably It may be 0.05 to 2 mm. If the average pore diameter of the first substrate is less than 0.03, air permeability may be poor after removal of the second substrate to be described later, and if the average pore diameter exceeds 2.5 mm, mechanical properties and durability may decrease, and the first and second substrates Excessive peeling may occur even with a small external force.

In this case, the first substrate 10 may have a glass transition temperature of 50 to 90° C. to satisfy the above-described conditions (1) and (2), and preferably, a glass transition temperature of 55 to 85° C. .

In addition, the first substrate 10 may have a melting point of 240 to 270° C. to satisfy the above-described conditions (1) and (2), and preferably, a melting point of 245 to 265° C.

In addition, the glass transition temperature and melting point of the first substrate 10 may be, preferably, the glass transition temperature and melting point of the warp and weft yarns of the first substrate 10 .

If the glass transition temperature of the first substrate 10 is less than 50° C. or the melting point is less than 240° C., mechanical properties and durability are deteriorated, or appropriate peel strength cannot be exhibited, so that the film substrate cannot be easily peeled off after the winter season or , the air permeability may be significantly reduced even after the film substrate is removed. In addition, if the glass transition temperature of the warp and the weft of the first substrate 10 exceeds 90 ℃ or the melting point exceeds 270 ℃, mechanical properties and durability may be reduced.

In addition, the first substrate 10 may have a thickness of 0.3 to 1.5 mm, preferably 0.4 to 1.2 mm, to satisfy the thickness ratio range of the first substrate and the second substrate. If the thickness of the first substrate is less than 0.3 mm, mechanical properties and durability may be lowered, and the appropriate peel strength may not be exhibited, so that it may not be possible to easily peel the second substrate after the winter season, and the thickness exceeds 1.5 mm When the first substrate and the second substrate are excessively peeled off even by a small external force, a problem may occur.

Next, the second substrate 20 will be described.

The second substrate 20 blocks outside air in the winter season, and is easily peeled off as shown in FIG.

The second substrate 20 is a film-shaped substrate, and may be used without limitation as long as it is a material that can be used for forming a film-shaped substrate conventionally in the art, and preferably includes at least one selected from polyethylene and polypropylene. and more preferably polyethylene or polypropylene, and still more preferably polyethylene.

In addition, the second substrate 20 may have a glass transition temperature of -60 to -15° C. to satisfy the above-described conditions (1) and (2), and preferably has a glass transition temperature of -55 to -20. °C. In addition, the second substrate 20 may have a melting point of 95 to 150° C., preferably 100 to 145° C., so as to satisfy the above-described conditions (1) and (2). If the glass transition temperature of the second substrate is less than -60°C or the melting point is less than 95°C, mechanical properties and durability are lowered, or appropriate peel strength cannot be exhibited, so that the film substrate cannot be easily peeled after the winter season, or the film substrate Even after removal, the air permeability may be significantly reduced, and if the glass transition temperature of the second substrate exceeds -15°C or the melting point exceeds 150°C, the peel strength decreases, so that the first and second substrates are excessive even with a small external force. A problem of peeling may occur.

In addition, the thickness of the second substrate 20 may be 0.03 to 0.25 mm, preferably 0.04 to 0.20 mm, to satisfy the thickness ratio range of the first and second substrates described above. If the thickness of the second substrate is less than 0.03 mm, a problem may occur that the first substrate and the second substrate are excessively peeled even with a small external force. The peeling of the second substrate may not be possible.

On the other hand, the second substrate may include a flame retardant in an amount of 9 to 16% by weight, preferably 10 to 15% by weight of the total weight. If the flame retardant is included in less than 9% by weight of the total weight of the second substrate, there may be a problem that the flame retardancy of the composite vertical protective net for winter is significantly poor, and if it contains more than 16% by weight, the degree of improvement in flame retardancy is insignificant, and economic problems may arise.

In addition, the flame retardant may be used without limitation as long as it is a flame retardant commonly used in the art, but preferably, the flame retardant may include a non-halogenated cyclic phosphonate (Non-halogenated cyclic phosphonate).

On the other hand, the composite vertical protective net (100,100') for winter according to the present invention, measured based on ASTM D3330 to satisfy the above-mentioned condition (2), may have a 90˚ peel strength of 0.092 ~ 0.4 N/25mm, preferably For example, it may be 0.099 to 0.39 N/25 mm, and 180° peel strength may be 0.03 to 0.2 N/25 mm, preferably 0.037 to 0.195 N/25 mm.

At this time, the peel strength is measured in accordance with ASTM D3330 under the conditions of a test speed of 300 mm/min, a load cell of 20N, a temperature of 23±2° C., and a relative humidity of 50±5%.

If the 90˚ peel strength is 0.092 N/25 mm or less, or the 180˚ peel strength is 0.03 N/25 mm or less, the first substrate and the second substrate may be excessively peeled even by a small external force, and the If the 90˚ peel strength exceeds 0.4 N/25 mm or the 180˚ peel strength exceeds 0.2 N/25 mm, peeling of the second substrate may not be possible easily after the winter season.

On the other hand, the composite vertical protective nets 100 and 100 ′ for winter according to the present invention may not include an adhesive layer between the first substrate 10 and the second substrate 20 . Specifically, a portion of the first and/or second substrate is melted through thermal lamination to be described later without including a separate adhesive component and/or adhesive component between the first substrate 10 and the second substrate 20 . And by fusion bonding, the first substrate and the second substrate may be fixed. Accordingly, while the appropriate peel strength can be expressed, the air permeability is excellent after the film substrate is removed, and the effect that can be recycled can be expressed.

The method for manufacturing a composite vertical protective net for winter of the present invention may include the step of thermally laminating a mesh-shaped first substrate and a film-shaped second substrate.

At this time, the thermal lamination may be performed at a temperature of 200 to 235 °C, preferably 210 to 235 °C. If the thermal lamination temperature is less than 200 ℃, the first substrate and the second substrate may be excessively peeled off even by a small external force, and if the temperature exceeds 235 ℃, mechanical properties and durability may be reduced, and in winter Thereafter, it may not be possible to easily peel the second substrate, and even after the film substrate is removed, the air permeability may be significantly reduced.

In addition, the thermal lamination may be performed at a speed of 45 to 75 m per minute, preferably at a speed of 50 to 70 m per minute. If the thermal lamination speed is less than 45 m per minute, if it exceeds, mechanical properties and durability may be reduced, the peeling of the second substrate may not be easy after winter, and the air permeability may be significantly reduced even after removing the film substrate, If the thermal lamination speed exceeds 75 m per minute, a problem may occur in which the first and second substrates are excessively peeled off even by a small external force.

And, the thermal lamination may be performed under a pressure condition of 3 to 7K (JIS standard), preferably under a pressure condition of 3.5 to 6.5K. If the thermal lamination pressure condition is less than 3K, there may be a problem that the first substrate and the second substrate are excessively peeled even with a small external force, and if the pressure condition exceeds 7K, mechanical properties and durability may be reduced, and in winter Thereafter, it may not be possible to easily peel the second substrate, and even after the film substrate is removed, the air permeability may be significantly reduced.

Hereinafter, the present invention will be described with reference to the following examples. At this time, the following examples are only presented to illustrate the invention, and the scope of the present invention is not limited by the following examples.

[Example]

Example 1: Preparation of a composite vertical protection net for winter

First, the first substrate in the form of a mesh of polyethylene terephthalate (PET) material and the second substrate in the form of a film of polyethylene (PE) material having a thickness of 0.08 mm, a glass transition temperature of -38 ° C and a melting point of 125 ° C. Thermal lamination was performed at 225° C., a pressure of 5 K, and a speed of 60 m/min to prepare a composite vertical protective net for the winter season. At this time, the second substrate contained 12.5% by weight of AF-CU of Doosung Chemical as a flame retardant in the total weight.

At this time, the mesh-shaped first substrate had an average pore diameter of 0.2 mm and a thickness of 0.75 mm, and the first substrate was composed of warp, weft and ground yarns, and the melting point of the covering portion of the ground yarn was 170° C., and the first substrate The warp and weft yarns have a glass transition temperature of 70°C and a melting point of 256°C.

On the other hand, in the winter composite vertical protection net, the values of the following conditions (1) and (2) were 0.069 and 17.28, respectively.

Condition (1)

condition (2)

In this case, a is the glass transition temperature (°C) of the warp and weft yarns of the first substrate, b is the melting point (°C) of the warp and weft yarns of the first substrate, c is the glass transition temperature (°C) of the second substrate, and Where d is the melting point (°C) of the second substrate, e is the 90° peel strength between the first and second substrates (N/25 mm), and f is the 180° peel strength between the first and second substrates ( N/25 mm).

Examples 2 to 26 and Comparative Examples 1 to 24: Preparation of a composite vertical protection net for winter

A composite vertical protective net for winter was prepared in the same manner as in Example 1, but Examples 2 to 26 and Comparative Examples 1 to 24 were carried out under the same conditions as in Tables 1 to 10 below.

Experimental Example 1: Evaluation of physical properties of a composite vertical protection net for winter

The composite vertical protection nets for winter season prepared in Examples 1 to 26 and Comparative Examples 1 to 24 were evaluated in the following manner, and the results are shown in Tables 1 to 10 below.

(1) Peel strength measurement

The peel strength was measured under the conditions of a test speed of 300 mm/min, a load cell of 20N, a temperature of 23±2° C. and a relative humidity of 50±5% through the ASTM D3330 standard.

Specifically, a specimen having a width of 24 mm and a length of 100 mm was prepared, and the surface of a 50 mm stainless steel panel having a thickness of 1.1 mm was wiped with acetone and dried for at least 10 minutes.

Then, the dried specimen was pressed with a rubber roller of 2,040 g to a thickness of about 30 mm by matching one end of the panel, and the other side was pressed naturally with a rubber roller of 2,000 g at a speed of 5 mm/s.

Then, after fixing the specimen and the test plate at 90° (degrees) and 180° (degrees) in a universal testing machine, the peel strength at 90° and 180° was measured by pulling the crosshead speed to measure the load.

At this time, if the peeling did not go smoothly or if stretching or tearing occurred during peeling, it was marked as 'not peelable'.

(2) Measurement of tensile strength

Through the test method based on the standard KS F 8081 (2018), a 30 mm wide test piece collected from a vertical protection net was fixed to a fixture connected to a core so that the gage distance was 200 mm, hung on the testing machine, and the tensile test speed was given at 200 mm/min. The tensile strength was measured by measuring the breaking load and elongated length of the vertical protection net.

At this time, based on the above standard KS F 8081 (2018), when the tensile strength is less than 1.47 kN, it was judged as unsuitable as a vertical protection net.

(3) air permeability measurement

After fixing the prototype of the fabric to the tester and using a vacuum to make different air pressures on one side of the fabric, the air permeability was measured by measuring the velocity of the air flow from the high air pressure side to the low air pressure side.

(4) flame retardancy measurement

Through the test method based on the standard KS F 8081 (2018) ^{, randomly cut out from the object to be measured 2m 2} or more, and make 3 specimens each measuring 35cm in width and 25cm in length.

Then, each of the specimens is fixed in the specimen support frame without looseness, and the length of the burner flame is set to 45mm. After installing the burner so that the tip of the flame is in contact with the lower end of the center of the specimen, heating is carried out for each specimen for 1 minute, and the specimen that is dyed during the heating time is tested again. did.

At this time, when the afterflame time of the vertical protection net is 3 seconds or less and the residual time is 5 seconds or less, '○' is displayed. did

Example 1 Example 2 Example 3 Example 4 Example 5 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 55 85 55 T _m (℃) 256 256 256 256 245 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PP PE PE PE T _g (℃) -38 -15 -55 -20 -55 T _m (℃) 125 140 125 125 100 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.13 0.11 0.29 0.113 0.17 180° 0.06 0.05 0.15 0.05 0.08 Condition (1) 0.069 0.055 0.086 0.050 0.081 condition (2) 17.28 20.67 7.46 20.13 12.87 Tensile strength (kN) width 1.75 1.84 1.51 1.67 1.59 length 1.64 1.69 1.49 1.51 1.47 Air permeability (cm ³ /cm ² /s) 0.685 0.658 0.592 0.698 0.513 flame retardant ○ ○ ○ ○ ○

Example 6 Example 7 Example 8 Example 9 Example 10 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 85 55 85 55 85 T _m (℃) 265 245 265 245 265 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -20 -55 -20 -38 -38 T _m (℃) 145 145 100 125 125 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.098 0.26 0.10 0.29 0.102 180° 0.03 0.08 0.05 0.15 0.04 Condition (1) 0.055 0.088 0.049 0.075 0.064 condition (2) 26.02 9.69 24.11 7.41 23.22 Tensile strength (kN) width 1.58 1.53 1.61 1.61 1.58 length 1.48 1.48 1.53 1.58 1.52 Air permeability (cm ³ /cm ² /s) 0.529 0.538 0.687 0.612 0.712 flame retardant ○ ○ ○ ○ ○

Example
11 Example
12 Example
13 Example
14 Example
15 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 70 70 70 T _m (℃) 256 256 240 270 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.33 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -55 -20 -38 -38 -38 T _m (℃) 100 145 95 150 125 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.2 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.6
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.36 0.103 0.38 0.092 0.26 180° 0.19 0.05 0.2 0.03 0.16 Condition (1) 0.074 0.059 0.069 0.069 0.069 condition (2) 5.89 21.67 5.51 27.43 7.81 Tensile strength (kN) width 1.68 1.62 1.67 1.49 1.61 length 1.55 1.52 1.56 1.47 1.50 Air permeability (cm ³ /cm ² /s) 0.624 0.598 0.577 0.697 0.546 flame retardant ○ ○ ○ ○ ○

Example 16 Example 17 Example 18 Example 19 Example 20 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 70 70 70 T _m (℃) 256 256 256 256 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 1.33 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -38 -38 -38 -38 -38 T _m (℃) 125 125 125 125 125 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.04 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.03 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 210 235 225 225 Pressure (K) 5 5 5 3.5 6.5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.094 0.105 0.31 0.11 0.28 180° 0.03 0.04 0.15 0.04 0.13 Condition (1) 0.069 0.069 0.069 0.069 0.069 condition (2) 26.47 22.64 7.14 21.88 8.01 Tensile strength (kN) width 1.78 1.68 1.71 1.61 1.58 length 1.72 1.59 1.61 1.52 1.49 Air permeability (cm ³ /cm ² /s) 0.696 0.689 0.534 0.689 0.526 flame retardant ○ ○ ○ ○ ○

Example
21 Example
22 Example
23 Example
24 Example
25 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 70 70 70 T _m (℃) 256 256 256 256 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.03 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -38 -38 -35 -41 -38 T _m (℃) 125 125 126 122 125 Flame Retardant (wt%) 12.5 12.5 10 15 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 50 70 60 60 60 peel strength
(N/25mm) 90° 0.19 0.11 0.14 0.13 0.19 180° 0.11 0.05 0.07 0.06 0.08 Condition (1) 0.069 0.069 0.067 0.07 0.069 condition (2) 10.94 20.51 15.63 17.28 12.16 Tensile strength (kN) width 1.79 1.62 1.76 1.75 1.78 length 1.68 1.53 1.65 1.63 1.67 Air permeability (cm ³ /cm ² /s) 0.689 0.528 0.687 0.684 0.511 flame retardant ○ ○ ○ ○ ○

Example
26 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 40 100 40 100 T _m (℃) 256 256 256 230 280 Average hole diameter (mm) 2.5 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -38 -70 -5 -70 -5 T _m (℃) 125 125 125 80 160 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.10 non-peelable 0.09 non-peelable 0.03 180° 0.04 non-peelable 0.025 non-peelable 0.01 Condition (1) 0.069 0.095 0.04 0.096 0.041 condition (2) 21.88 not measurable 42.17 not measurable 84.45 Tensile strength (kN) width 1.56 1.38 1.44 1.32 1.13 length 1.48 1.32 1.41 1.20 0.95 Air permeability (cm ³ /cm ² /s) 0.755 0.196 0.706 0.145 0.114 flame retardant ○ ○ ○ ○ ○

Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Comparative Example 9 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 40 100 40 100 70 T _m (℃) 230 280 230 280 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -70 -5 -38 -38 -70 T _m (℃) 160 80 125 125 80 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° non-peelable 0.08 non-peelable 0.088 non-peelable 180° non-peelable 0.01 non-peelable 0.012 non-peelable Condition (1) 0.11 0.031 0.083 0.059 0.079 condition (2) not measurable 36.06 not measurable 46.8 not measurable Tensile strength (kN) width 1.25 1.21 1.55 1.36 1.58 length 1.13 1.12 1.41 1.31 1.39 Air permeability (cm ³ /cm ² /s) 0.177 0.691 0.266 0.726 0.457 flame retardant ○ ○ ○ ○ ○

Comparative Example 10 Comparative Example 11 Comparative Example 12 comparative example
13 Comparative Example 14 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 70 70 70 T _m (℃) 256 230 280 256 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 1.6 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -5 -38 -38 -38 -38 T _m (℃) 160 85 160 125 125 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.75 0.016 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:1.0 1:0.01
thermal paper Temperature (℃) 225 225 225 225 225 Pressure (K) 5 5 5 5 5 Speed (m/min) 60 60 60 60 60 peel strength
(N/25mm) 90° 0.089 0.45 0.078 non-peelable 0.02 180° 0.021 0.30 0.01 non-peelable 0.01 Condition (1) 0.048 0.068 0.068 0.069 0.069 condition (2) 33.41 4.21 38.38 not measurable 52.1 Tensile strength (kN) width 1.45 1.54 1.35 1.08 1.81 length 1.39 1.44 1.41 0.91 1.75 Air permeability (cm ³ /cm ² /s) 0.421 0.299 0.722 0.165 0.703 flame retardant ○ ○ ○ ○ ○

Comparative Example 15 comparative example
16 Comparative Example 17 comparative example
18 comparative example
19 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET PET T _g (℃) 70 70 70 70 70 T _m (℃) 256 256 256 256 256 Average hole diameter (mm) 0.2 0.2 0.2 0.2 0.2 Thickness (mm) 0.75 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE PE T _g (℃) -38 -38 -38 -38 -38 T _m (℃) 125 125 125 125 125 Flame Retardant (wt%) 12.5 12.5 12.5 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 200 245 225 225 225 Pressure (K) 5 5 2 8 5 Speed (m/min) 60 60 60 60 35 peel strength
(N/25mm) 90° 0.085 non-peelable 0.065 non-peelable peeling
impossible 180° 0.02 non-peelable 0.02 non-peelable peeling
impossible Condition (1) 0.069 0.069 0.069 0.069 0.069 condition (2) 31.26 not measurable 38.62 not measurable not measurable Tensile strength (kN) width 1.59 1.65 1.48 1.26 1.85 length 1.52 1.52 1.33 1.19 1.72 Air permeability (cm ³ /cm ² /s) 0.695 0.213 0.698 0.155 0.691 flame retardant ○ ○ ○ ○ ○

Comparative Example 20 Comparative Example 21 Comparative Example 22 Comparative Example 23 No. 1
(mesh) No. 1
(warp, weft) division PET PET PET PET T _g (℃) 70 70 70 70 T _m (℃) 256 256 256 256 Average hole diameter (mm) 0.2 0.2 0.01 3.0 Thickness (mm) 0.75 0.75 0.75 0.75 2nd entry
(film) 2nd entry division PE PE PE PE T _g (℃) -38 -38 -38 -38 T _m (℃) 125 125 125 125 Flame Retardant (wt%) 12.5 8 12.5 12.5 Thickness (mm) 0.08 0.08 0.08 0.08 Thickness ratio (1st substrate: 2nd substrate) 1:0.107 1:0.107 1:0.107 1:0.107
thermal paper Temperature (℃) 225 225 225 225 Pressure (K) 5 5 5 5 Speed (m/min) 85 60 60 60 peel strength
(N/25mm) 90° 0.056 0.14 0.26 0.08 180° 0.01 0.08 0.11 0.02 Condition (1) 0.069 0.066 0.069 0.069 condition (2) 49.73 14.92 8.87 32.82 Tensile strength (kN) width 1.44 1.76 1.81 1.25 length 1.39 1.65 1.72 1.13 Air permeability (cm ³ /cm ² /s) 0.195 0.688 0.135 0.798 flame retardant ○ × ○ ○

Looking at Tables 1 to 10, it was confirmed that Examples 1 to 26 were excellent in peel strength, tensile strength, air permeability and flame retardancy as all of the conditions (1) and (2) of the present invention were satisfied.

On the other hand, Comparative Example 1, in which the glass transition temperature of the first substrate is less than 50 ° C., and the glass transition temperature of the second substrate is less than -60 ° C., is compared with Example 3, the conditions (1) and conditions ( 2) was not satisfied, so it was confirmed that peeling of the first and second substrates was impossible, the tensile strength was poor, and the air permeability was very poor.

In addition, Comparative Example 2, in which the glass transition temperature of the first substrate exceeds 90° C., and the glass transition temperature of the second substrate exceeds -15° C., is compared with Example 4, Condition (1) and Condition (2) ), the peel strength of the first and second substrates was very poor, and it was confirmed that the tensile strength was poor.

In addition, Comparative Examples 3 to 6, in which the glass transition temperature and melting point of the first and second substrates are less than or exceeding the range, are the conditions of the present invention (1 ) and condition (2) were not satisfied, so it was confirmed that peeling of the first and second substrates was impossible, the tensile strength was poor, and the air permeability was very poor.

In addition, Comparative Examples 9 and 10 in which the glass transition temperature and melting point of the second substrate are less than or exceeding the range, compared with Examples 11 and 12, do not satisfy the condition (2) It was confirmed that the mechanical strength and peel strength of the vertical protective net were poor.

In addition, Comparative Examples 11 and 12, in which the melting points of the first and second substrates were less than or exceeding the range, did not satisfy the condition (2) when compared with Examples 13 and 14. It was confirmed that peel strength and mechanical strength were poor, and air permeability was also poor.

In addition, Comparative Example 13, in which the thickness ratio of the first substrate and the second substrate exceeds 1: 0.9, does not satisfy the condition (2) compared to Example 15, the peel strength cannot be measured, and the air permeability is poor. appeared, which is expected because the second substrate of the film type is excessively thick.

In addition, Comparative Example 14, in which the thickness ratio of the first substrate and the second substrate is less than 1: 0.015, does not satisfy the condition (2) as compared to Example 15, and thus it is confirmed that the peel strength and mechanical strength are remarkably poor. could

In addition, the thermal lamination temperature of Comparative Example 15 of less than 200 ℃, compared with Example 17, it could be confirmed that the peel strength is remarkably poor as it does not satisfy the condition (2).

In addition, the thermal lamination temperature of Comparative Example 16 exceeding 235 ° C., compared with Example 18, as it did not satisfy the condition (2), peeling was impossible, and it was confirmed that the air permeability was very poor.

In addition, it was confirmed that Comparative Example 17, in which the thermal lamination pressure was less than 3K, was remarkably poor in peel strength and tensile strength as it did not satisfy the condition (2) of the present invention when compared with Example 19.

In addition, in Comparative Example 18, in which the thermal lamination pressure exceeds 7K, it was confirmed that when compared with Example 20, peeling of the first and second substrates was impossible and the tensile strength and air permeability were also remarkably poor.

In addition, in Comparative Example 19 in which the thermal lamination speed was less than 45 m per minute, it was confirmed that the peeling of the first and second substrates was impossible and the air permeability was poor when compared with Example 21.

In addition, it was confirmed that Comparative Example 20, in which the thermal lamination speed exceeds 75 m per minute, did not satisfy the condition (2) of the present invention, so the peel strength and tensile strength were poor, and the air permeability was also very poor.

In addition, it was confirmed that Comparative Example 21, in which the flame retardant was less than 9% by weight, had poor flame retardancy.

In addition, Comparative Example 22, in which the average pore diameter of the first substrate was less than 0.03 mm, was confirmed to have very poor air permeability as compared to Example 25.

In addition, it was confirmed that Comparative Example 23, in which the average pore diameter of the first substrate exceeds 2.5 mm, had very poor peel strength and mechanical strength as compared to Example 26, the condition (2) of the present invention was not satisfied. could

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. will be able to easily suggest other embodiments, but this will also fall within the scope of the present invention.

100, 100': Composite vertical protection net
10: first base
20: second description

Claims (10)

a mesh-shaped first substrate; and
Including; a second substrate in the form of a film;
Composite vertical protection net for winter season, characterized in that the first substrate and the second substrate satisfy the following condition (1):
(One)

In this case, a is the glass transition temperature (°C) of the first substrate, b is the melting point (°C) of the first substrate, c is the glass transition temperature (°C) of the second substrate, and d is the melting point of the second substrate (°C).
According to claim 1,
The first substrate is a composite vertical protective net for winter, characterized in that the glass transition temperature of 50 ~ 90 ℃ and melting point of 240 ~ 270 ℃.
According to claim 1,
The second substrate has a glass transition temperature of -60 ~ -15 ℃ and a melting point of 95 ~ 150 ℃ composite vertical protective net for winter season, characterized in that.
According to claim 1,
Composite vertical protective net for winter season, characterized in that 90° peel strength is 0.092 ~ 0.4 N/25mm and 180° peel strength is 0.03 ~ 0.2 N/25mm, measured in accordance with ASTM D3330.
According to claim 1,
The first and second substrates have a thickness ratio of 1: 0.015 to 0.9.
According to claim 1,
The first substrate is a winter composite vertical protection net, characterized in that the average pore diameter is 0.03 ~ 2.5mm.
According to claim 1,
The second substrate is a winter composite vertical protective net, characterized in that it contains 9 to 16% by weight of the flame retardant in the total weight.
According to claim 1,
A composite vertical protective net for winter, characterized in that it does not include an adhesive layer between the first and second substrates.
Including; thermal lamination of the mesh-shaped first substrate and the film-shaped second substrate;
The method for manufacturing a composite vertical protection net for the winter season, wherein the first and second substrates satisfy the following condition (1):
(One)

In this case, a is the glass transition temperature (°C) of the first substrate, b is the melting point (°C) of the first substrate, c is the glass transition temperature (°C) of the second substrate, and d is the melting point of the second substrate (°C).
10. The method of claim 9,
The thermal lamination method for manufacturing a composite vertical protection net for winter season, characterized in that the temperature 200 ~ 235 ℃, pressure 3 ~ 7K, and performed at a speed of 45 ~ 75m per minute.

Images