JPH04209253A - Composite sheet for coated floor material - Google Patents

Abstract

PURPOSE:To simplify construction work by a method in which a composite sheet formed by bonding a meshed sheet to one side of an expanded thermoplastic synthetic resin sheet having many through holes is bonded to a floor, and the sheet is coated with a fluid paint flooring material. CONSTITUTION:Many through holes 4 are formed in an expanded sheet 1 of polyethylene or others and a meshed sheet 2 is bonded to one side of the sheet 1 to form a composite sheet. The composite sheet is bonded to concrete floor 5 and coated with a fluid urethane paint flooring material 7 to strongly connect it to the concrete floor. The floor excellent in soundproofing effect and non- slipping property can thus be constructed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite sheet for external flooring material suitable for the floor surfaces of concrete structures, especially open corridors of residential buildings, around staircases, and balconies. In particular, the present invention relates to a composite sheet for coating flooring that has excellent sound insulation properties and anti-slip properties, and has good construction and workability.

[Conventional technology]

BACKGROUND ART Conventionally, the floor surfaces of open hallways, around staircases, and balconies in residential buildings have generally been finished with concrete troweled or painted with flooring and waterproof materials. Furthermore,
Although synthetic resin sheeting and ceramic tile finishing have been used, various desired performances as floor covering materials are not necessarily met.

In recent years, there has been a demand for ensuring soundproof environmental performance as part of improving livability, and with regard to blocking floor impact noise, which is a particular problem, improvements have been made to indoor living room floors, and some results have been achieved. (open side outside the living room) and around the staircase,
In addition, the issue of impact noise caused by walking on balconies has not been resolved, and it is hoped that appropriate construction methods and flooring materials will be developed soon.

In addition, most of the conventional floor construction methods have a flat finish,
The floor surface is slippery, especially when moisture is present, so there is a risk of falling while walking. To prevent slipping and falling.

Proposals have been made to add silica sand, urethane chips, rubber powder, etc. to the coating material, but a satisfactory preventive effect has not yet been obtained.

[Problem to be solved by the invention]

As described above, there is currently no known flooring material that can be applied to floor surfaces such as corridors of residential buildings where one person walks and can satisfy both sound insulation and slip prevention properties at the same time.

Therefore, an object of the present invention is to provide a composite sheet for coated floors that substantially eliminates impact noise caused by walking on floors such as open doors and has excellent slip resistance.

[Means to solve the problem]

The present inventors have developed a laminated flooring material that overcomes the above problems.
As a result of extensive experimental research, we have developed a sheet for laminated flooring that is extremely desirable for practical use.

That is, the gist of the present invention is a composite sheet for floor coating, which is formed by integrally bonding a mesh sheet to one side of a thermoplastic synthetic resin foam sheet.

The composite sheet having the above structure according to the present invention can be used as a coating material for concrete floors in residences as described above, for example, coating materials such as polyurethane resin, epoxy resin, polyester resin, acrylic resin, etc. When used in construction, this member provides a coated flooring material that simultaneously satisfies excellent sound insulation and anti-slip properties.

Examples of the material resin for the synthetic resin foam constituting the composite sheet of the present invention include polyethylene, polypropylene,
Polyolefins such as polybutene.

Examples include polyvinyl acetate, polyvinyl chloride, and polyurethane, which may be used alone or in combination of two or more. When considering practicality, polyolefin resins are preferred.

Particularly preferred is polyethylene.

These resin foam sheets may be produced using any commonly known method, such as the mechanical foaming method, the reaction product gas method, the blowing agent method, the spray method, etc. Ru.

The expansion ratio of this foam is suitably in the range of 2 to 30 times from the viewpoint of practicality and soundproofing effect. If the foaming ratio is less than 2 times, the sound insulation effect will be insufficient.

If it exceeds 30 times, it is not preferable because not only the practical strength of the foam sheet decreases, but also the sound insulation properties deteriorate due to the formation of open cells. The practically desirable foaming ratio is 5~
It is 20 times more.

Furthermore, the thickness of this foam sheet is usually 1.

, Lm to about 20 mm is employed, but the preferred thickness is about 21 to 5 mm. In addition, this foam
In order to improve the adhesion of the surface, primer treatment or corona discharge treatment may be applied in advance, and synthetic fibers or A woven fabric of natural fibers, a non-woven fabric, a synthetic resin film, etc. can be interposed.

The mesh sheet bonded and integrated on one side of the synthetic resin foam sheet may be made of, for example, single fibers of polyester, polyamide, vinylon, polyethylene, polypropylene, aramid, carbon, glass, or plants, or twisted or knitted yarns thereof. It is made of thread formed into a mesh shape. In this mesh sheet, when the coating resin is applied to the surface of the coating composite sheet, mesh-like protrusions are formed on the surface layer of the coating resin due to the mesh sheet, which prevents slipping when walking. However, it is also intended to effectively prevent falls, and the thickness of the mesh yarn and the shape of the mesh are appropriately selected in consideration of the darning function.

The thickness of the thread is, for example, an apparent diameter of 1 to 2 mm.
1 or so, and the shape of the mesh may be square, but a hexagonal shape, particularly a tortoise-like shape, is advantageously adopted.

The size of the hexagonal mesh is preferably in the range of 5 to 50 squares per repeat, particularly preferably in the range of 1° to 40 squares. If one repeat is too small or too large, the anti-slip properties will be insufficient, making it difficult to employ.

This mesh sheet can be bonded and fixed to one side of the synthetic resin foam sheet using commonly known integration methods such as lamination using an adhesive or heat welding such as extrusion lamination. Although it can be advantageously used, in order to improve the adhesion between the synthetic resin foam sheet and the mesh sheet, woven fabrics made of materials that have good affinity with the iji material components,
A nonwoven fabric or other suitable resin film can be interposed.

However, it is usually preferable that the inclusions be bonded to the surface of the synthetic resin foam sheet before the mesh sheet is bonded and fixed to the synthetic resin foam sheet.

In addition, in order to further strengthen the bond with the resin layer of the coating material, the synthetic resin foam sheet has a diameter of 2 to 20 mm, for example.
It is practical to make through holes of about 100 mm evenly over the entire area, and the number of through holes is 100 per 1 rri'.
~1,000 pieces is preferable. When applying floor coating resin, the fluid coating material flows into the through-holes and comes into contact with the concrete base surface, etc., and is strongly bonded to it, resulting in an excellent anchoring effect and a strong bond to the base surface. A stable coating material is formed that is fixed to the surface.

Next, the present invention will be explained in more detail with reference to the accompanying drawings.

FIG. 1 is a schematic partially enlarged cross-sectional view of an example of the composite sheet for coating floor materials of the present invention, and FIG. 2 is a schematic partially enlarged cross-sectional view of a coated floor material constructed on a concrete floor using the composite sheet. It is.

In the figure, a composite sheet for coating flooring is shown, in which a hexagonal mesh sheet 2 of about 101 repeats is integrally bonded to the upper surface of a polyethylene foam sheet 1 with an adhesive 3.

The polyethylene foam sheet 1 is provided with through holes 4 having a diameter of approximately 5 mm at a ratio of approximately 500/2 over the entire surface.

This composite sheet consists of a lower polyethylene foam sheet 1
is adhered to the concrete 5 via an adhesive layer 6, and a fluid urethane resin coating material 7 is applied from the top surface of the composite sheet.
is coated, the entire surface including the mesh sheet 2 is covered with the flooring material layer, and the through holes 4 of the foam sheet are also filled.
Strong adhesion to concrete floors has been obtained.

On the surface of the coated flooring material formed in this way, convex stripes 8 of the coating resin layer are formed by the covering portion of the mesh sheet 2 of the composite sheet 5, and this effectively prevents slipping when people walk. Ru.

[Effect]

In such a composite sheet for floor coating of the present invention, moderate mesh-like protrusions are formed on the surface resin layer of the floor coating over the entire surface, and the floor coating coated with the resin layer is formed on the floor base material. Since the composite sheet is firmly adhesively fixed to the surface, the excellent anti-slip and sound insulation effects of the composite sheet provide a comfortable flooring for residences and the like.

〔Example〕

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Example 1 A foamed polyethylene sheet with a thickness of 3 cm in which through holes of 101 in diameter were opened at a rate of about 400 per 1 d (manufactured by Tanemizu Chemical Industry Co., Ltd., product name: Softlon S 1003: foaming ratio of about 10 times) Then, using a polyester-modified polyurethane adhesive, a polyester mesh sheet (manufactured by Benitoyama Co., Ltd.) with a mesh size of approximately 25 squares was bonded together, and the composite sheet for coated flooring material (1) was created by bonding and fixing them together. did.

Example 2 A foamed polyethylene sheet with a thickness of 5 cm (manufactured by Tanemizu Kagaku Kogyo Co., Ltd., trade name: Softlon 52005: foaming ratio of about 20
A soft polyester woven fabric is heat-sealed to one side of the paper, and a polyester mesh sheet (manufactured by Benitoyama Co., Ltd.) with a mesh 1 repeat of 35 is laminated thereon using a polyester-modified polyurethane adhesive. The joint is fixed together,
A composite sheet (2) was created.

Examples 3-5 and comparative examples 1-2 Using the composite sheet created in the above example.

A two-component urethane was used as the coating material, and the coating was applied in the following manner.

First, a polyester-modified polyurethane adhesive or waterproof material is applied to the concrete floor surface, a composite sheet is pasted on top of it with the mesh sheet facing upward, and then a urethane-based flooring material is applied over the sheet using a metal trowel. Applying amount 2 using
It was applied to the entire surface at a rate of 4 kg/rn''.

The polyurethane adhesive and waterproof material used are as follows.

Adhesive = A liquid (Takenate L-496) 10
0 parts by weight Liquid B (Takerac P C-596) 20
0 parts by weight waterproofing material: A liquid (Takenate L-1020)
100 parts by weight of liquid B (Takelac p c-3ioo)
zooo parts by weight In addition, the urethane-based flooring materials are of the following two-component type.

Coating floor material ■: 100 parts by weight of liquid A (Color Top DL main ingredient) 100 parts by weight of liquid B (curing agent) Coating floor material ■: A
Liquid (grip coat main ingredient) 100 parts by weight Liquid B (〃
Curing agent) 100 parts by weight Note) Takenate L-496: A prepolymer containing polymethylene polyphenyl polyisocyanate, polyoxypropylene polyol, and castor oil as main components.

Takelac P C-596: A compound containing castor oil, polyoxypropylene polyol, and calcium carbonate as main components.

Takenate L-1020: A prepolymer consisting of tolylene diisocyanate and polyoxypropylene polyol.

Takelac P C-3100: A compound containing methylenebisorthochloroaniline, polyoxypropylene polyol, and calcium carbonate as main components.

All of the above product names are manufactured by Shikinichi Yakuhin Kogyo Co., Ltd.

Further, Color Top DL is a polyurethane flooring material manufactured by NPC Shokai Co., Ltd., and Grip Coat is a polyurethane flooring material manufactured by Jujumu Kogyo Co., Ltd.

The various materials and construction conditions used in the construction of the painted flooring materials are shown in Table 1. For comparison, a case where only each coating material was applied without using the composite sheet was compared.

Furthermore, various floor performance tests were conducted on each applied flooring material, and the results are summarized in Table 1.

1st Surface coating material Adhesive Adhesive Waterproofing material --Amount of application (
ψblindness) 0.5 0.5 2.2 − −
Composite sheet (1) (2) (1) --Coated flooring material ■ ■ ■ ■■ Application amount (ICg/bo) 2.4 2.4 2.4
2.4 2.4 Floor impact sound (number of L) 66
52 62 82 82 Anti-slip property (dry) 0.
77 0=78 0.75 0,50 0.52
You (wet) 0.66 0.67 0.64
0.35 0.36 Abrasion resistance 46 44 46 5
2 46 Hardness 87 84 85 87
86 The floor impact noise count for the bare slab floor without coating was 85.

The respective measurement methods and their evaluations in the above measurements are as follows.

[Test Items] Floor impact sound level (number of L): Measured according to JIS A 1418. A practically desirable value is 70 or more.

Ichiname Ichimasu Ichidoku: Measured according to JIS A 1407. Practically desirable values are 0.6 or more when dry and 0.5 or more when wet.

Abrasion resistance (IK/1000rev): JISK63
Measured according to 01. A practically desirable value is less than ioo■.

East skin: Measured according to JISK6301. A practically desirable value is 50 or more.

Alkali resistance: Measured according to JIS A 6021, immersed in 1% NaOH aqueous solution for 168 hours and observed state change.

Acid resistance: 2% H, SO, according to JIS A 6021
Soak for 168 hours and observe changes in state. - The test results of the alkali resistance and acid resistance of the floor coating materials of Examples 3, 4, and 5 were all practically satisfactory.

〔Effect of the invention〕

The composite sheet of the present invention can be directly bonded to the floor without any additional work during construction, and can be applied with ordinary floor coating construction methods, so it is extremely easy to handle and has excellent workability. Moreover, as is clear from the above table, the sound insulation performance and anti-slip performance are significantly improved compared to conventional coated flooring materials, and the excellent functionality of the floor is maintained, so it has extremely high practical value.

[Brief explanation of the drawing]

Fig. 1 is a schematic partially enlarged cross-sectional view of an example of the composite sheet for coating floor materials of the present invention, and Fig. 2 is a schematic diagram of a coating floor material using the coating method on a concrete floor surface. FIG. 3 is a partially enlarged sectional view. Explanation of symbols: 1...Polyethylene foam sheet 2...Mesh sheet 3...Adhesive layer 4...Through hole 5...Concrete floor 6...Adhesive layer 7...Resin Painted flooring material 8... Convex stripes Patent applicant: Masa N. Banki (4 people) Agent/patent attorney: Ryo Yamamoto -□-

Claims (1)

[Scope of Claims] 1. A composite sheet for flooring, which is made by integrally bonding a mesh sheet to one side of a thermoplastic synthetic resin foam sheet. 2. A composite for coating floor materials, which is formed by interposing a woven fabric, non-woven fabric, or film between the synthetic resin foam sheet and the mesh sheet to enhance the bondability of both sheets and improve the strength of the composite sheet. sheet. 3. The composite sheet according to claim 1 or 2, wherein the synthetic resin foam has an expansion ratio of 2 to 30 times and a thickness of 1 to 20 mm. 4. The composite sheet according to claim 1 or 2, wherein the foam sheet has 100 to 1,000 through holes with a diameter of 2 to 20 mm per 1 m^2. 5. The composite sheet according to claim 1 or 2, wherein the mesh sheet has a mesh of 1 repeat of 5 to 50 mm.