KR20200066486A - Skin material of insulating material for building - Google Patents

Abstract

Provided is a surface material for a constructional insulation material, comprising a metal layer, a glass scrim layer, and a polyolefin-based composite nonwoven fabric layer. It is possible to derive excellent dimensional stability, breathability and flame retardancy.

Description

Face material of building insulation materials{SKIN MATERIAL OF INSULATING MATERIAL FOR BUILDING}

The present invention relates to a face material of a building insulation material.

By preventing the movement of heat by attaching an insulating material to the wall surface of the building, it is possible to reduce the influence of the external temperature change on the interior temperature of the building and maintain a constant indoor temperature with less energy. Among these insulation materials for construction, in the external heat insulating material that is attached to a wall made of concrete or mortar, there is a problem that structural stability is poor, such as a gap between the surface material of the heat insulating material and the wall of concrete or mortar, which is not well attached.

Accordingly, glass fibers are used as a face material to properly adhere to concrete or mortar walls. However, glass fibers are harmful to the human body and are scattered when handled, which gives the skin a greasy feel, and there is a risk of entering the eyes, which causes inconvenience to workers.

An object of the present invention is to provide a surface material of a building insulation material that provides excellent adhesion strength and provides excellent dimensional stability, breathability, and flame retardancy.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned can be understood by the following description, and will be more clearly understood by embodiments of the present invention. In addition, it will be readily appreciated that the objects and advantages of the present invention can be realized by means of the appended claims and combinations thereof.

It is possible to provide a surface material of a building insulation material comprising a metal layer, a glass scrim layer, and a polyolefin composite nonwoven fabric layer according to the present invention.

The surface material of the building insulation material according to the present invention can provide excellent adhesion strength to foams and wet mortars without including glass fibers, and can provide excellent dimensional stability, breathability and flame retardancy.

In addition to the above-described effects, the concrete effects of the present invention will be described together while describing the specific matters for carrying out the invention.

1 is a schematic cross-sectional view of a face material of a building insulation material according to an embodiment of the present invention.
2 is a schematic cross-sectional view of a heat insulating material including a face material of a building insulating material according to another embodiment of the present invention.
3 is a schematic cross-sectional view of a heat insulating material including a face material of a building heat insulating material according to another embodiment of the present invention.

The above-described objects, features, and advantages will be described in detail below with reference to the accompanying drawings, and accordingly, a person skilled in the art to which the present invention pertains can easily implement the technical spirit of the present invention. In the description of the present invention, when it is determined that detailed descriptions of known technologies related to the present invention may unnecessarily obscure the subject matter of the present invention, detailed descriptions will be omitted. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings are used to indicate the same or similar components.

In the following, the arrangement of any component in the "upper (or lower)" or "upper (or lower)" of the component means that any component is disposed in contact with the upper surface (or lower surface) of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Hereinafter, some embodiments of the present invention will be described.

One embodiment of the present invention provides a surface material of a building insulation material including a metal layer, a glass scrim layer, and a polyolefin composite nonwoven fabric layer. 1 is a schematic cross-sectional view of a face material of the building insulation according to an embodiment of the present invention. As shown in FIG. 1, the surface 100 of the building insulation material has a glass scrim layer 120 laminated on the other surface of the polyolefin composite nonwoven fabric layer 110, and a metal layer on the other surface of the glass scrim layer 120. The structure 130 may be stacked.

In general, the surface material of the building insulation material can serve as a carrier for the foamable composition to pass through the caterpillar. On the other hand, the insulation used for attaching to a mortar wall is a gap between the surface of the mortar and the mortar material, and the gap between the mortar material and the deterioration of the foam, condensation, etc. occur, and the insulation performance is remarkably deteriorated. there is a problem.

Accordingly, the glass fiber can be used as a cotton material so that it can be properly attached to the wall of the mortar material, but the glass fiber is harmful to the human body and is scattered during handling, inhaled into the respiratory tract, giving the skin a sharp touch, and There is a risk of entering, and there is a problem that causes inconvenience to workers.

The surface material of the building insulation material includes a metal layer, a glass scrim layer, and a polyolefin-based composite non-woven fabric layer, and does not contain glass fibers, while preventing worker's danger and inconvenience, while simultaneously providing excellent adhesion strength to foam and mortar walls. Imparting and implementing flame retardancy, it is possible to improve resistance to moisture, strength reinforcement, breathability and dimensional stability. And, it acts as a barrier layer to the foaming gas of the thermosetting foam, it is possible to realize a high level of thermal insulation for a long time.

The building insulation material may have a thickness of about 0.1 mm to about 0.9 mm. If the thickness is less than the above range, the thickness may be thin, resulting in tearing during handling, and problems such as quality defects may occur in the process. Due to this, there may be a problem in winding quality and adhesion with a thermosetting foam.

Specifically, the surface material of the building insulation material includes a polyolefin-based composite nonwoven fabric layer, and may provide excellent air permeability, along with excellent adhesion strength, dimensional stability and flame retardancy. The polyolefin composite nonwoven fabric layer is manufactured by a papermaking method and may have a uniform structure. The papermaking method means obtaining a nonwoven fabric by mixing the raw materials constituting the nonwoven fabric with water and then floating a certain basis weight through a mesh network to dehydrate the water with pressure or heat.

The polyolefin composite nonwoven fabric layer may include polyolefin (chop), pulp, and a binder.

Specifically, the polyolefin ?(chop) may have a length of about 10 mm to about 25 mm. The polyolefin ?(chop) has the length? In the shape, for example, it may be formed by spinning and cutting polyolefin. The polyolefin ?(chop) has a length in the above range, effectively exhibits an anchoring effect, imparts excellent adhesion strength, mechanical strength, and dimensional stability, and at the same time, can exhibit excellent breathability.

Specifically, when the length of the polyolefin ?(chop) is less than the above range, it aggregates with the polyolefin ?(chop) or pulp contained in the polyolefin-based composite nonwoven fabric layer, and the dispersibility decreases to form a uniform nonwoven fabric layer. none. In addition, tensile strength, adhesion strength and dimensional stability may be deteriorated. And, when the length of the polyolefin ?(chop) exceeds the above range, it is difficult to have a uniform orientation between pulp contained in the polyolefin composite nonwoven fabric layer, and it is difficult to obtain desired physical properties compared to the content, resulting in poor economic efficiency There may be. And, the surface area of the nonwoven fabric layer decreases, the adhesion strength between the interfaces decreases, and in the process of foaming the foamable composition, the foamable composition is impregnated in the surface material, the impregnated portion in the cured product becomes weak and the adhesion strength of the surface material Falling, problems such as contamination occur in the foam manufacturing process.

And, the polyolefin ?(chop) has a diameter of about 8㎛ to about 25㎛, to give the polyolefin-based composite non-woven fabric layer a certain level of adhesion strength and excellent air permeability, excellent thermal insulation for a long period of time in the building insulation material including it Performance can be imparted. The diameter is defined as the average value of the diameter of the cross-section cut so that the polyolefin? Is perpendicular to the longitudinal direction.

Specifically, when the diameter of the polyolefin ?(chop) is less than the above range, the polyolefin ?chop or pulp contained in the polyolefin-based composite nonwoven fabric layer is agglomerated, and the dispersibility decreases to form a uniform nonwoven fabric layer. none. And, tensile strength and dimensional stability may be deteriorated. In addition, when the diameter of the polyolefin ?(chop) exceeds the above range, the number of polyolefin ?(chop) contained in the polyolefin-based composite nonwoven fabric layer is reduced, and the spacing between the polyolefin? This can get worse.

The polyolefin ?(chop) may include one selected from the group consisting of polyethylene, polypropylene, and combinations thereof. The polyolefin-based composite nonwoven fabric layer may provide excellent air permeability, including excellent adhesion strength, dimensional stability and flame retardancy, including polyolefin ?(chop) of the material. In addition, the use of glass fibers can reduce skin irritation or dustability.

The polyolefin composite nonwoven fabric layer may include the polyolefin ?(chop) from about 20% to about 80% by weight, specifically, from about 30% to about 50% by weight. The polyolefin ?(chop) can provide excellent breathability even with a low content compared to glass fibers. The polyolefin-based composite nonwoven layer may exhibit excellent breathability, including the polyolefin ?(chop) in the above range. And, it is possible to impart excellent thermal insulation properties to the insulating material including the same.

The polyolefin composite non-woven fabric layer may contain pulp to protect the foam from physical impact, and prevent the foaming composition from being impregnated with the cotton material in the process of manufacturing the heat insulating material, thereby improving adhesion strength and imparting excellent breathability. have.

The pulp may be present in a curved or straight line among materials included in the polyolefin composite nonwoven layer. And, the pulp can reinforce the action of the polyolefin ?(chop) more economically and assist the action of the binder. In addition, the pulp can lower the breathability by making the structure of the polyolefin composite nonwoven fabric layer more dense. Accordingly, the polyolefin composite nonwoven fabric layer may include the pulp and maintain excellent breathability at a small basis weight.

The polyolefin composite nonwoven layer may include about 25 parts by weight to about 170 parts by weight of the pulp compared to 100 parts by weight of the polyolefin. Specifically, the pulp may include about 40 parts by weight to about 150 parts by weight or 50 parts by weight to 100 parts by weight.

The polyolefin-based composite non-woven fabric layer includes the pulp in the above-described range, thereby more economically binding materials in the polyolefin-based composite non-woven fabric layer, and simultaneously exhibiting excellent tensile strength, breathability, adhesion strength, and dimensional stability. .

The polyolefin composite nonwoven fabric layer may include a binder comprising one selected from the group consisting of (meth)acrylic resin, polyurethane resin, vinyl resin, styrene resin, and combinations thereof. Specifically, the binder may include a binder comprising one selected from the group consisting of acrylic styrene, polyvinyl chloride (PVC), polyvinyl alcohol (PVA), and combinations thereof. The binder is the polyolefin contained in the polyolefin-based composite nonwoven fabric layer in a solution form? And it is possible to increase the bonding strength of the pulp and the like, and impart improved adhesion strength and breathability.

The polyolefin composite nonwoven fabric layer may include the binder in an amount of about 10 parts by weight to about 50 parts by weight, compared to 100 parts by weight of the polyolefin. Specifically, the binder may include about 15 parts by weight to about 40 parts by weight.

The polyolefin composite nonwoven fabric layer may have a thickness of about 0.1 mm to about 0.4 mm. If the thickness is less than the above range, the thickness may be thin, resulting in tearing during handling, and there may be problems such as quality defects in the process. If it exceeds the above range, the cost may increase with a thicker thickness of the cotton material. Due to this, there may be a problem of winding quality and adhesion with a thermosetting foam.

Conventionally, in the surface material of a building insulation material, dimensional stability and adhesion strength are imparted by including a high content of glass fibers in the nonwoven fabric layer. On the other hand, the polyolefin-based composite nonwoven fabric layer may not contain expensive glass fibers that are harmful to the human body and are scattered during handling, causing inconvenience to workers. The surface material of the building insulation material does not contain glass fibers, and includes a metal layer, a glass scrim layer, and a polyolefin-based composite nonwoven fabric layer to exhibit proper density and breathability, and to provide excellent dimensional stability.

The polyolefin-based composite non-woven fabric layer does not contain glass fibers, and includes the polyolefin? (Chop), the pulp, and a binder, exhibits proper density and breathability, and can provide excellent dimensional stability.

The polyolefin composite nonwoven fabric layer may have a basis weight of about 30g/m2 to about 50g/m2. The polyolefin-based composite nonwoven fabric layer has a basis weight in the above range, thereby providing excellent adhesion strength and flame retardancy, and preventing contamination of a caterpillar or the like. In addition, the polyolefin-based composite nonwoven fabric layer constitutes a surface material together with a metal layer and a glass scrim layer, and by having a basis weight in the above range, it is possible to prevent the occurrence of a step difference with the glass scrim layer.

Specifically, when the basis weight of the polyolefin composite nonwoven fabric layer is less than the above range, the height difference in the width or length direction of the glass scrim layer may not be smoothly compensated, and since the overall content of the organic binder and the nonwoven fabric layer is small, the foam The adhesion strength with may be lowered. And, when the basis weight exceeds the above range, as the content of the organic binder in the nonwoven fabric layer increases, flame retardancy may deteriorate and manufacturing cost may increase.

The surface material of the building insulation material includes a glass scrim layer, imparts dimensional stability, and can improve the compressive strength of the building insulation material including the same, and may exhibit improved adhesion strength. The glass scrim layer may have a network structure in which neighboring glass fibers are separated at a wide interval of about 5 mm to about 10 mm. In addition, the glass scrim has a network structure in which about 3 to about 8 pieces and glass fibers are arranged side by side in each of the horizontal and vertical directions within a certain size of 1 inch * 1 inch, including the dimension stability of the face material as well as the Dimensional stability of building insulation materials can be imparted.

The glass scrim layer may have a thickness of about 0.1 mm to about 0.3 mm. If the thickness is less than the above range, the dimensional stability effect may be insignificant and may not have a protective effect against external impact, and if exceeded, there may be a problem that manufacturing cost increases.

The surface of the building insulation material includes a metal layer, and reflects radiation in the infrared region to block outdoor solar radiation in summer and to preserve radiant heat in the interior in winter to improve energy efficiency of buildings and to show flame retardancy. Can be.

The metal layer may have a thickness of about 5 μm to about 30 μm. If the thickness is less than the above range, the flame retardancy is lowered or the metal layer is easily scratched, and thus the flame retardant properties may not be exhibited. If it is exceeded, there is a problem of price increase, so compatibility is difficult, and the winding amount of the cotton material is small, resulting in poor workability. There may be a problem.

The metal layer may include one selected from the group consisting of iron, stainless steel (SUS), aluminum, magnesium, copper, and combinations thereof. Specifically, the metal layer may include aluminum, and aluminum has a small specific gravity, high thermal and electrical conductivity, and strong corrosion resistance, so that it can be easily processed into various forms and impart excellent flame retardancy.

The metal layer may be an aluminum thin film as a layer including aluminum foil. As described above, while implementing flame retardancy, including an aluminum thin film, it is possible to reinforce resistance and strength to moisture and improve dimensional stability. And, it acts as a barrier layer to the foaming gas of the thermosetting foam, it is possible to realize a high level of thermal insulation for a long time.

The metal layer may be combined with the glass scrim layer to provide excellent heat reflection effect, strength reinforcement, and excellent dimensional stability.

An acrylic coating layer may be further included on the surface of the metal layer. Generally, the adhesion of the aluminum layer to the interface may be a problem in a wet process with mortar. For example, when the aluminum layer is adhered to the wet mortar, an air pocket, that is, air bubbles may be generated by reacting with the aluminum layer and the wet mortar, and accordingly, a problem of deterioration in quality may occur. The surface material of the building insulation material may protect the surface of the metal layer by anodizing the surface of the metal layer or by additionally laminating an acrylic coating layer on the surface of the metal layer.

The surface material of the building insulation material may further include an adhesive layer. Specifically, the adhesive layer may be positioned between the metal layer and the glass scrim layer and/or between the glass scrim layer and the polyolefin composite nonwoven fabric layer to improve adhesion strength.

The adhesive layer may be formed by a hot melt or heat welding method. For example, after further placing a thermoplastic film between the glass scrim layer and the polyolefin composite nonwoven fabric layer, heat welding may be performed.

The adhesive layer is easily heat-sealed polyethylene (PE), polypropylene (PP), polyvinylidene chloride (PVDC), polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl alcohol copolymer (EVOH) and combinations thereof, and may be formed of a thermoplastic plastic film comprising one. For example, the adhesive layer may be formed of a polyethylene film, and accordingly, exhibits excellent adhesion with the polyolefin-based composite nonwoven fabric layer, thereby providing excellent adhesion strength to the surface of the building insulation material including the same.

The adhesive layer may have a thickness of about 10 μm to about 30 μm. If the thickness is less than the above range, the adhesive performance is poor, for example, there may be a problem of intercalation with the polyolefin-based composite nonwoven fabric layer, and if it exceeds, flame retardancy may be lowered due to an increase in manufacturing cost as well as an increase in the content of the organic adhesive layer. have.

2 is a schematic cross-sectional view of a heat insulating material including a face material of a building insulating material according to another embodiment of the present invention. As shown in FIG. 2, the surface material 100 of the building insulation material may be included on one surface of the foam 10 to form the building insulation material 200. Or, as shown in Figure 3, it is included on both sides of the foam 10 can form a thermal insulation material for building (200').

The building insulation material including the surface material of the building insulation material has excellent adhesion strength, so that the building wall and the building insulation material can be firmly attached to prevent the occurrence of a gap therebetween. Insulation can be maintained. In addition, the building insulation material can exhibit excellent dimensional stability, breathability and flame retardancy.

For example, the building insulation material, as shown in Figure 3, from the outermost layer, a metal layer, a glass scrim layer and a polyolefin-based composite non-woven fabric layer sequentially (upper) face/foam/polyolefin composite non-woven fabric layer, glass scrim layer and It may have a structure made of a (lower) face material sequentially comprising a metal layer.

The surface material of the building insulation material is sequentially laminated on top and bottom surfaces of a caterpillar or the like through which the foamable composition passes, and then the foamable composition is discharged between the face materials, and foamed and cured to insulate the foam material on the upper and lower parts of the foam. Can achieve At this time, the heat insulating material for the building may have an adhesive force with the top and bottom face materials by the foaming pressure. In addition, the insulating material for construction includes the metallic material, the glass scrim layer, and the surface material of the building insulating material including the polyolefin composite nonwoven fabric layer, and does not contain glass fibers, and provides excellent adhesion strength to foams and wet mortar. And excellent dimensional stability, breathability and flame retardancy.

(Example)

Example 1:

Using a papermaking method, a polyolefin-based composite nonwoven fabric layer comprising a polyolefin having a length of 13 mm (chop), 45 wt%, 38 wt% pulp and 17 wt% acrylic binder, and having a basis weight of 35 g/m 2 and a thickness of 0.2 mm It was prepared. At this time, the glass fiber was not included in the polyolefin composite nonwoven fabric layer.

Then, an aluminum foil layer having a thickness of 25 µm from the outermost layer, a glass scrim layer having a network structure of 0.3 mm in thickness with 5 glass fibers arranged side by side in each of the horizontal and vertical directions within a certain size of 1 inch * 1 inch, and The polyolefin-based composite nonwoven fabric layer was heat-press-laminated with a hydrophobic polyethylene film to prepare a cotton material. Subsequently, the caterpillar mass production line was placed on the upper and lower portions, respectively, and foamed and cured while discharging the phenolic foamable composition between the planar materials, thereby producing a building insulation material with a surface material attached to both sides of the foam.

Comparative Example 1:

Without the polyolefin? (Chop) and the pulp, a glass nonwoven layer having a thickness of 0.2 mm was prepared, including 70% of glass fibers having a length of 20 mm and 30% of an acrylic binder.

Then, an aluminum foil layer having a thickness of 25 µm from the outermost layer, a glass scrim layer having a network structure of 0.3 mm in thickness with 5 glass fibers arranged side by side in each of the horizontal and vertical directions within a certain size of 1 inch * 1 inch, and A heat insulating material for construction was prepared in the same manner as in Example 1, except that the glass nonwoven layer was heat-compressed and laminated with a hydrophobic polyethylene film to prepare a face material.

Comparative Example 2:

An insulating material for building was manufactured in the same manner as in Example 1, except that the glass scrim layer was not included in the surface material.

<Evaluation>

Experimental Example 1: Mortar adhesion strength

The insulating materials for construction of the examples and comparative examples were prepared as samples of 200 mm (width, W) x 200 mm (length, L) x 70 mm (thickness, T). Then, the mortar adhesion strength was measured using the adhesion strength tester, UTM (Instron, UTM) for each of the samples.

Specifically, according to the KS F 4716 method, the mortar on the surface of the building insulation material was raised to a size of 40 mm (W) X 40 mm (L) X 2 mm (T) and cured for 2 weeks. For example, mortar was cured on the surface of the metal layer. After that, the adhesive strength was measured using the tester after bonding with a tensile jig with an epoxy adhesive. And the results are shown in Table 1.

Experimental Example 2: adhesion strength between the face material and the foam

The insulation materials for construction of the examples and comparative examples were prepared as samples of 200 mm (W) x 200 mm (L) x 70 mm (T), and measured using an adhesion strength tester, UTM (Instron, UTM). Specifically, the surface of the surface material including the metal layer of the heat insulating material was cut at 25 mm intervals, and the end portion was fixed to a tensile jig and peeled 90 degrees at a 300 mm/min tensile speed. And the results are shown in Table 1.

Experimental Example 3: Dimensional stability

The building insulation materials of the examples and comparative examples were prepared as samples of 100 mm (W) x 100 mm (L) x product thickness (T), and the initial dimensions were accurately measured. Then, after standing at 70° C. for 24 hours according to KS M ISO 4898, the rate of dimensional change of length (L) and width (W) was measured. And, the average value of the dimensional change rate of each of the length (L) and the width (W) is shown in Table 1. The smaller the dimensional change rate, the higher the dimensional stability.

Experimental Example 4: Flame retardancy

According to KS F ISO 5660-1, the total heat release amount was measured using a cone calorimeter (FESTEC, cone calorimeter) to evaluate the semi-incombustibility, and the smaller the heat release value, the higher the semi-incombustibility.

Specifically, the heat insulating material for construction of the examples and comparative examples was prepared as a sample of 100 mm (W) Ⅹ 100 mm (L) Ⅹ 50 mm (T) and heated for 10 minutes with 50 kW/m2 radiant heat to measure the total heat release. And the results are shown in Table 1.

Experimental Example 5: Breathability

Air permeability was measured according to a certain pressure (20 Pa) and the flow rate of air per unit area using an air permeability measuring device (IDM Instruments, foam porosity tester), and the measured value was L/min.cm ² . And the results are shown in Table 1. The higher the measured value, the higher the air permeability, which means that the tissue is not dense and the air flow is high.

Bond strength to mortar (kPa) and fracture shape Bond strength between face material and foam (g/25㎜) Dimensional change rate
(%) Flame retardant
(MJ/㎡) Breathable
(L/min.cm ² ) Example 1 55 (broken foam) 201 0.3 0.2 0.3 Comparative Example 1 24 (interface dropout) 160 0.3 0.3 0.8 Comparative Example 2 49 (Foam broken) 172 1.3 0.4 0.5

As shown in Table 1, it can be confirmed that the embodiment shows excellent adhesion strength, dimensional stability, flame retardancy and breathability without including glass fibers in the polyolefin composite nonwoven fabric layer. For example, in Comparative Example 1 including the glass nonwoven layer, the adhesion strength between the face material and the foam fell when the adhesion strength test to the mortar, the interface in the face material dropped at 24 kPa. On the other hand, in the embodiment, it can be seen that the adhesion strength between the face material and the foam is excellent, and the interface adhesion in the face material is improved, so that no interfacial detachment occurs, the foam breaks, and has a high adhesion strength of 55 kPa. And, unlike the comparative example, it can be seen that the example shows an improved effect in the adhesion strength with the foam, and simultaneously exhibits an excellent dimensional change rate, flame retardancy and breathability.

As described above, the present invention has been described with reference to the exemplified drawings, but the present invention is not limited by the examples and drawings disclosed in the present specification, and it is various by a person skilled in the art within the scope of the technical idea of the present invention. It is obvious that modifications can be made. In addition, although the operation and effect according to the configuration of the present invention has not been explicitly described while explaining the embodiment of the present invention, it is natural that the effect predictable by the configuration should also be recognized.

100: cotton
110: polyolefin composite nonwoven fabric layer
120: glass scrim layer
130: metal layer
200, 200': insulation
10: foam

Claims (12)

Metal layer, glass scrim layer and a polyolefin-based composite nonwoven fabric layer comprising
Construction insulation materials.
According to claim 1,
The metal layer includes one selected from the group consisting of iron, stainless steel (SUS), aluminum, magnesium, copper, and combinations thereof.
Construction insulation materials.
According to claim 1,
The polyolefin-based composite nonwoven fabric layer includes polyolefin ?(pulp), pulp, and binder
Construction insulation materials.
According to claim 3,
The length of the polyolefin ?(chop) is 10㎜ to 25㎜
Construction insulation materials.
According to claim 3,
The polyolefin ?(chop) comprises one selected from the group consisting of polyethylene, polypropylene, and combinations thereof.
Construction insulation materials.
According to claim 3,
The polyolefin-based composite nonwoven fabric layer comprises 20 to 80% by weight of the polyolefin (chop)
Construction insulation materials.
According to claim 3,
The polyolefin? (Chop) containing 25 parts by weight to 170 parts by weight of the pulp compared to
Construction insulation materials.
According to claim 3,
10 parts by weight to 50 parts by weight of the binder compared to 100 parts by weight of the polyolefin (chop)
Construction insulation materials.
According to claim 3,
The binder includes one selected from the group consisting of (meth)acrylic resins, polyurethane resins, vinyl resins, styrene resins, and combinations thereof.
Construction insulation materials.
According to claim 1,
The polyolefin composite non-woven fabric layer does not contain glass fibers
Construction insulation materials.
According to claim 1,
The basis weight of the polyolefin composite nonwoven fabric layer is 30 g/m 2 to 50 g/m 2
Construction insulation materials.
According to claim 1,
Further comprising an adhesive layer
Construction insulation materials.

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