JP2019124076A - Powder adhesive for laminated floor and construction method of laminated flooring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have less deterioration even during long-term storage, easy uniform application, a relatively long time for sticking, quick drying after sticking, and good adhesive performance after drying. A flooring adhesive is obtained that does not have the potential to cause sick building syndrome and allows laying when new flooring is applied on the surface of existing flooring. SOLUTION: This is a powder adhesive which is a suspension in which fresh water is added and kneaded before sticking, and is a powder emulsion, a curing agent, a water-soluble polymer agent, a powder inorganic filler, and a curing adjusting agent. And evenly. [Selection diagram] None

Description

  The present invention relates to a floor adhesive for attaching a floor material at the time of construction of a floor material in a store or a general home, and in particular, can eliminate concerns about storage stability such as freezing or decay of the adhesive during storage. Also, there is no smell peculiar to the adhesive left after the application, and the floor material is newly added on the surface of the existing floor material without removing the existing floor material at a store or a home renovation. The present invention relates to a floor adhesive composition capable of being piled up when it is applied and its application method.

  The first of the performance requirements for flooring that can be stepped on by many visitors and residents is durability. In addition, interior designs suitable for stores and general households are important. For this reason, many stores satisfy both the durability and the design by using flooring suitable for both the durability and the store by laying floor materials.

  For example, in the construction of this floor material, a floor material such as a cushion floor, composition vinyl floor tile, multi-layer vinyl floor tile, multi-layer vinyl floor sheet, etc. is coated with a floor adhesive and a mortar base substrate surface or plywood What is adhered and constructed with a base material such as a surface is the mainstream.

  In addition, in order to eliminate the extension of the work period by the repair process in order to eliminate the unevenness of the floor material accompanying the removal of the existing floor material as the base treatment of the existing floor as the base treatment of the existing floor, the present applicant To propose a floor construction method and floor adjustment agent used in this construction method, which made it possible to create a floor base that can be piled up when a new floor material is applied on the surface of the existing floor material (See Patent Document 1).

  FIG. 2: is process drawing which shows the operation | work process of one Example of conventional flooring construction. As shown in the figure, in the case of interior work such as remodeling, as the treatment of the existing floor, the removal work of the existing floor material and the repair work are necessary to eliminate the unevenness of the floor material accompanying the removal. Then, when repair etc. are performed, dry curing is needed and a new floor material will be installed.

JP, 2013-112975, A

  In the case of removing such an existing floor material, a great effort is required for peeling work to peel off the floor material adhered with an adhesive or the like, and if it is forcibly peeled off, the mortar surface and the plywood surface of the base are damaged However, again, it is necessary to adjust the non-landing with the surface control agent, and as a result, there is a problem that the construction period is prolonged.

  Therefore, even if you try to lay over without removing the existing floor materials, since these floor materials are often made of synthetic resin such as vinyl chloride resin, the floor material surface has almost no water absorption, and it is water-based There is a problem that when it is applied with a system adhesive, adhesive strength can not be exhibited due to non-drying.

  Therefore, when an epoxy resin adhesive or a urethane resin adhesive is used, although the adhesive strength is exhibited, there is a risk that swelling will occur due to the remaining of the solvent. In addition, the normal re-construction work has a short construction period, and in some cases the resident may live, and if the organic solvent remains during or after construction, the resident's health and safety aspects There was also a problem.

  On the other hand, when the flooring floor surface having a wooden surface is also subjected to double-plying, the performance with poor water absorption is the same as that of the synthetic resin flooring described above, and the surface of the flooring floor surface is Since the coating layer is applied and the wettability of the adhesive is deteriorated by this, it is necessary to roughen in advance by sanding treatment or the like.

  On the other hand, when sticking a new flooring to a new foundation, or sticking a new flooring to a regulated foundation in a reform, a paste-like floor adhesive that can be immediately applied is already marketed. ing. As this floor adhesive, those having the following characteristics are preferable.

  First, one that does not contain an organic solvent is desirable because it can cause sick house syndrome. Therefore, water-based aqueous adhesives are desirable. Furthermore, it is preferable that the drying after application be quick, and conversely, that the sticking possible time be long is preferable. In addition, it is necessary to firmly bond the base and the floor material after bonding.

  These characteristics are desirable characteristics for existing paste-like floor adhesives, but in existing floor adhesives, due to paste-like freezing due to low temperature during storage, temperature during storage Problems such as solidification and separation may occur due to changes.

  The present invention has less deterioration even during long-term storage, facilitates uniform coating, has a relatively long bonding time, dries quickly after bonding, and has good adhesion performance after drying. An object of the present invention is to obtain a floor adhesive and a floor covering construction method which can be stacked when a new floor covering is applied to the surface of an existing floor without causing a sick house syndrome.

The powder adhesive for floors according to the invention described in claim 1 is a powder adhesive to be a suspension obtained by adding and kneading clean water before sticking,
The powder emulsion, the curing agent, the water-soluble polymer agent, the powder inorganic filler, and the curing regulator are uniformly contained.

The powder adhesive for floors according to the invention described in claim 2 is a powder adhesive to be a suspension obtained by adding and kneading clean water before sticking,
40 to 60 parts by weight of the powder emulsion,
The curing agent consisting of cement component and / or hemihydrate gypsum component is more than hemihydrate gypsum component, and is more than 7 parts by weight and not more than 35 parts by weight, and curing agent of only hemihydrate gypsum component In excess of 20 parts by weight and less than 14 parts by weight for hardeners containing only cement components,
The water-soluble polymer agent is at least 0.1 parts by weight and less than 1.0 parts by weight,
More than 10 parts by weight of powder inorganic filler and 30 parts by weight or less,
0.1 to 1.0 parts by weight of a curing regulator,
The total of the powder emulsion, the curing agent, the water-soluble polymer agent and the powder inorganic filler does not exceed 100 parts by weight.

A floor material construction method according to the invention described in claim 3 is a construction method using the floor powder adhesive according to claim 1 or 2,
A kneading step of adding fresh water to the floor powder adhesive and kneading to prepare an adhesive suspension;
Applying the adhesive suspension to the adherend surface of the floor base substrate;
And a sticking step of sticking a floor material on the adhesive suspension subjected to the coating step.

  In the floor covering application method according to the invention described in claim 4, in the application step according to claim 3, when the adhesive suspension is applied, an equal pitch of the suspension is applied while being coated with a gore eye Forming a comb-like eye.

  In the floor covering construction method according to the fifth aspect of the present invention, the floor covering is applied to the adhesive suspension subjected to the application step even if the floor base base side is the existing floor side according to the third aspect. Flooring construction method characterized in that it has a sticking process to be put on.

  The present invention has less deterioration even during long-term storage, facilitates uniform application, has a relatively long bonding time, dries quickly after application, and has good adhesion performance after drying, In addition, there is no possibility of causing a sick house syndrome, and it is possible to obtain a floor powder adhesive and flooring application method that enables layering when newly laying flooring on the surface of existing flooring. It has the effect of

  In the paste state, the cost may increase when discarding as industrial waste, and it is necessary to remove the adhesive component for the container, but since this product is a powder, it is easy to discard it. Yes, cost can be reduced.

It is process drawing which shows the operation | work process of one Example of floor material construction using the powder adhesive for floors of this invention. It is process drawing which shows the work process of one Example of the conventional flooring installation.

  In the present invention, it is a powder adhesive which is a suspension obtained by adding and kneading clean water before sticking, which is a powder emulsion, a curing agent, a water soluble polymer agent, a powder inorganic filler, and a curing adjustment. Uniformly contains the agent, so it is less deteriorated even during long-term storage, uniform application can be easily performed, there is a time that relatively long adhesion is possible, it dries quickly after application, and good after drying It is possible to obtain a floor adhesive that has adhesive performance and does not have the possibility of causing a sick house syndrome and that enables layering when new flooring is applied on the surface of existing flooring.

  That is, in order to add and knead fresh water at the time of use, it is sufficient to knead only the amount to be used, and if fresh water is not added, the composition is in the form of powder, so degradation is small even during long-term storage. It can eliminate concerns about storage stability such as freezing and decay of the adhesive during storage. In addition, because it does not contain organic solvents, there is no possibility of causing sick house syndrome. Furthermore, since the composition in powder form is uniformly blended, when fresh water is added, a uniform adhesive can be obtained, and uniform coating can be easily performed.

A more preferable embodiment is a powder adhesive which is a suspension obtained by adding and kneading clean water before sticking, and a powder adhesive which is a suspension obtained by adding and kneading clean water before sticking,
40 to 60 parts by weight of the powder emulsion,
The curing agent consisting of cement component and / or hemihydrate gypsum component is more than hemihydrate gypsum component, and is more than 7 parts by weight and not more than 35 parts by weight, and curing agent of only hemihydrate gypsum component In excess of 20 parts by weight and less than 14 parts by weight for hardeners containing only cement components,
The water-soluble polymer agent is at least 0.1 parts by weight and less than 1.0 parts by weight,
More than 10 parts by weight of powder inorganic filler and 30 parts by weight or less,
0.1 to 1.0 parts by weight of a curing regulator,
The total of the powder emulsion, the curing agent, the water-soluble polymer agent and the powder inorganic filler does not exceed 100 parts by weight.

As the substrate to which the aqueous suspension of the powder adhesive of the present invention is applied, the powder emulsion and cement, the hemihydrate gypsum and the powder inorganic filler, on the surface of either the existing floor surface or the floor floor surface Applying an aqueous suspension of the powder floor adhesive, and applying a flooring prior to drying. Thereby, a quick flooring method can be obtained.
Floor materials are often made of synthetic resin such as vinyl chloride resin, so the floor material surface has little water absorption, and various compositions are considered in view of poor drying when it is applied with an aqueous adhesive. Consider the proportion of goods.

  In addition, by including the inorganic filler, the viscosity of the aqueous suspension can be improved, and the filling property can be imparted, so that it is possible to follow the unevenness of the base. In addition, by selecting the type and amount of the curing agent, there is a time in which relatively long adhesion is possible, and it dries quickly after application and can have good adhesion performance after drying.

In addition, by including a curing agent that reacts with water consisting of cement and hemihydrate gypsum, it is possible to improve the problem of non-drying in the floor covering of the floor material using an aqueous adhesive and to have good adhesion performance. it can.

  More specifically, the curing agent comprising 40 to 60 parts by weight of the powder emulsion, more preferably 50 to 60 parts by weight, and a cement component and / or a hemihydrate gypsum component, The hemihydrate gypsum component is more than the cement component and is more than 7 parts by weight and not more than 35 parts by weight, and the hardener of only the hemihydrate gypsum component exceeds 20 parts by weight, and the hardener of only the cement component By setting the amount of the powder inorganic filler to less than 14 parts by weight and not more than 10 parts by weight and not more than 30 parts by weight, it is possible to make the time for relatively long adhesion possible and to dry quickly after application.

  Further, by setting the water-soluble polymer agent in an amount of 0.1 parts by weight or more and less than 1.0 parts by weight, the initial adhesive strength can be made into a preferable state. Furthermore, by setting the amount of the powder inorganic filler to 10 parts by weight or more and 30 parts by weight or less, uniform coating can be easily performed, and a bonding time can be secured.

  In the powder adhesive of the present invention, 40 parts by weight or more and 60 parts by weight or less of fresh water, more preferably 45 parts by weight or more and 55 parts by weight or less of clean water are added to 100 parts by weight of the powder adhesive for floor Thus, a good suspension can be obtained.

  The powdery emulsion of the powder adhesive of the present invention is selected from water-dispersed adhesive components of ethylene-vinyl acetate resin emulsion, acrylic resin emulsion, vinyl acetate resin emulsion, versatic acid vinyl ester resin emulsion and their copolymers. It is selected from one or more.

  The curing agent of the present invention is added to improve initial adhesion and drying properties, but it also has the property of gradually curing a suspension kneaded with fresh water, so the adhesive itself is cured. There is an advantage that the disposal becomes easy. Specific curing agents include cement components and hemihydrate gypsum components, and after application, the curing agents of the cement component and / or the hemihydrate gypsum component will be cured together with the powdered inorganic filler. Just do it.

  Preferably, the curing agent consisting of a cement component and / or a hemihydrate gypsum component is more than 7 parts by weight and 35 parts by weight or less, and in addition, the hemihydrate gypsum component is more than the cement component, and thus a preferable curing is achieved. You can get the speed. Furthermore, a preferable curing rate can be obtained by setting it to be more than 20 parts by weight for a hardener containing only hemihydrate gypsum component and less than 14 parts by weight for a hardener containing only cement component.

  Furthermore, as a curing regulator for adjusting the curing rate, specifically, one comprising at least one or more of citric acid, sodium citrate, disodium citrate, trisodium citrate and malic acid is selected. Further, the amount to be added is 0.1 parts by weight or more and less than 1.0 parts by weight. In this case, if the amount is 0.1 parts by weight or less, the delay time is short, so the usable time is short, and if the amount is 1.0 parts by weight or more, the delay rate is too long. On the contrary, the dry condition is worse.

  The powder inorganic filler of the present invention is added as an aggregate and a filler of a powder adhesive. Specifically, at least one selected from calcium carbonate, anhydrous gypsum, gypsum dihydrate, fly ash, clay, talc, silica sand, vermiculite, serpentine, and hollow balloon is selected.

  Since the water-soluble polymer agent of the floor powder adhesive of the present invention contains a large amount of powder emulsion for the floor adhesive, it tends to sag and has low water retention. Therefore, it is excellent to use methylcellulose (MC) having a degree of polymerization of about 10000 to 40000 or a polysaccharide thickener containing xanthan gum, guar gum or the like, in order to have viscosity and high water retentivity and thixotropy.

  As a floor material construction method of the present invention, a kneading step of adding fresh water to the above-mentioned floor powder adhesive and kneading it to adjust the adhesive suspension, and kneading to the adherend surface of the floor base substrate are carried out. By providing an application step of applying the adhesive suspension and an attaching step of applying a flooring material on the adhesive suspension subjected to the application step, degradation is even less during long-term storage and uniform Floor covering construction which can be applied easily, has a relatively long pasting time, dries quickly after pasting, has good adhesion performance after drying, and can not cause sick house syndrome. You can get the law.

  In the floor covering application method of the present invention, preferably, when applying the adhesive suspension, a comb-like eye of the suspension is formed while being coated with a comb-like gote. As a result, peaks and valleys of the adhesive component are formed, and moisture, air, and the like can be released from the valleys, and the adhesive can be uniformly fitted to the floor material.

Example 1 (verification of powder adhesive for floor)
As shown in Tables 1 to 3, powder adhesives for floor of the compositions (parts by weight) of Experimental Examples 1 to 17 were produced. In addition, an aqueous suspension obtained by adding 50 parts by weight of fresh water to 100 parts by weight of the powder adhesive for floor is applied to the surface of the existing floor as a base material, and the coating property and the degree of the comb are Initial adhesive strength including sticking performance, bondable time, and strength after drying of the adhesive were verified.

  In Tables 1 to 3, ◎ is very good, は is good, Δ is not good, x is poor, the pot life is not “Δ”, ◎ is very good, ○ is Good and x were evaluated in three grades of failure. Moreover, "prazole NP5000 (brand name)" of Yayoi Chemical Industry Co., Ltd. manufacture was used about the conventional product. Moreover, the cushion floor HM-2030 made from Sangetsu Co., Ltd. was used about the existing flooring.

  As shown in Tables 1 to 3, the surface of the existing floor is a base having no water absorbability, so when using a conventional aqueous paste-like adhesive, it is difficult to develop the initial adhesive force, but instead the sticking possible time is It tends to be longer.

  When the amount of the powder inorganic filler is increased, the shift property of the tile is improved, and thus the initial adhesion is improved. On the contrary, when the amount is too large, other performances are deteriorated. This is because the incorporation of the powder inorganic filler helps prevent slippage by biting like a spike on the tile.

  When only cement is blended, the initial adhesive strength is improved but the sticking possible time is shortened. With regard to hemihydrate gypsum, while the initial adhesive strength is slightly improved, the balance between the initial adhesive strength and the sticking time can be maintained as in Experimental Example 3 by using in combination with cement.

  In addition, when the amount of cement and hemihydrate gypsum is reduced, the reactive water content decreases and the drying becomes insufficient, so the dry strength decreases. On the other hand, if the amount is too large, the curing time tends to be short when kneaded with water, so that the usable time tends to be short.

  When no hardening modifier is added, the adhesive for powder floor kneaded with water becomes shorter in usable life from the ratio of cement and gypsum, and the sticking possible time of the adhesive applied to the existing floor surface also becomes shorter. However, when the amount is too large, the pot life and the like increase, but the dry strength tends to decrease.

  As shown in Tables 1 to 3, the powder emulsion is 40 parts by weight or more and 60 parts by weight or less, and the hardening agent composed of the cement component and / or the hemihydrate gypsum component has more hemihydrate gypsum component than the cement component, It is more than 7 parts by weight and not more than 35 parts by weight, and it is more than 20 parts by weight in the case of the hardener with only hemihydrate gypsum component, and less than 14 parts by weight in the case of the hardener with only cement component. 0.1 parts by weight or more and less than 1.0 part by weight, more than 10 parts by weight of powder inorganic filler and 30 parts by weight or less, and 0.1 parts by weight or more and less than 1.0 parts by weight of a curing regulator The total of the powder emulsion, the curing agent, the water-soluble polymer agent and the powder inorganic filler does not exceed 100 parts by weight (Experimental Example 2, Experimental Example 3, Experimental Example 6, Experimental Example 8, Experimental Example 11 ) Has good workability and adhesion performance, and in particular, experimental examples There has been verified to be at good or all.

Example 2 (flooring method)
FIG. 1 is a process chart showing a working process of one embodiment of floor material construction using the floor powder adhesive of the present invention. As shown in the figure, the powder adhesive was kneaded with clean water, applied to the base material with gore-tick, placed on and affixed to the floor material, and the construction was verified. The test method is as follows.

  In the test method, 50 parts by weight of fresh water was added to 100 parts by weight of the powder type adhesive having the composition of Experimental Example 3 of Example 1 in a poly container, and sufficiently stirred and mixed using a spatula. The aqueous turbid solution adjusted to the existing floor material surface was applied using a goji eye at room temperature (23 ° C., 65 RH). In addition, the pitch of the scoop eyeball was 5 mm or less.

  After the application, the open time was taken for 15 minutes and 30 minutes, and a double-layered vinyl floor sheet (manufactured by Sungetsu; Essrium plain PP1632) was applied. As a blank test, a similar test was performed using an aqueous acrylic resin adhesive. After pasting, it was left at room temperature for 7 days, and various adhesive strengths were measured with a tensile tester. The results are shown in Table 4.

  As shown in Table 4, in the case of the aqueous acrylic resin adhesive, it was undried because there is no water absorption of the base, but when the floor powder adhesive was used, it was completely dried and the multilayer vinyl floor was used. The seat was constructed. As described above, by changing the shape of the adhesive to powder and blending the curing agent, it is possible to perform construction that could not be performed with the conventional aqueous acrylic resin adhesive. Since the condition is not an aqueous adhesive, there is no need to worry about freezing, etc., and since the odor is almost odorless because it does not use the petroleum resin that is the source of the smell, it is possible to cope with even sensitive residents. .

Claims (5)

It is a powder adhesive that becomes a suspension that is mixed and kneaded with fresh water before sticking,
A powder adhesive for double-layered floor comprising a powder emulsion, a curing agent, a water-soluble polymer agent, a powder inorganic filler and a curing regulator uniformly. It is a powder adhesive that becomes a suspension that is mixed and kneaded with fresh water before sticking,
40 to 60 parts by weight of the powder emulsion,
The curing agent consisting of cement component and / or hemihydrate gypsum component is more than hemihydrate gypsum component, and is more than 7 parts by weight and not more than 35 parts by weight, and curing agent of only hemihydrate gypsum component In excess of 20 parts by weight and less than 14 parts by weight for hardeners containing only cement components,
The water-soluble polymer agent is at least 0.1 parts by weight and less than 1.0 parts by weight,
More than 10 parts by weight of powder inorganic filler and 30 parts by weight or less,
0.1 to 1.0 parts by weight of a curing regulator,
The total of the said powder emulsion, a hardening | curing agent, a water-soluble polymer agent, and a powder inorganic filler does not exceed 100 weight part, The powder adhesive for lapped floorings characterized by the above-mentioned. It is a construction method using the powder adhesive for floors according to claim 1 or 2,
A kneading step of adding fresh water to the floor powder adhesive and kneading to prepare an adhesive suspension;
Applying the adhesive suspension to the adherend surface of the floor base substrate;
And a sticking step of sticking a flooring material on the adhesive suspension subjected to the coating step.   In the said application | coating process, when apply | coating the said adhesive suspension, the comb-tooth of the equal pitch of the said suspension is made to form, and it is made to form the comb-like floor material of the said suspension. Construction method.   The double-ply flooring application method according to claim 3 or 4, further comprising a sticking step of sticking a flooring material on the adhesive suspension subjected to the application step.

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