JPH0347797A - Template shop for steel structure - Google Patents

Abstract

PURPOSE:To improve the affinity to aqueous ink, to easily and certainly erase the ink and to obtain excellent durability and dimensional stability by forming a surface layer from a sheet composed of thermoplastic rubber or a thermoplastic synthetic resin containing no chlorine atom. CONSTITUTION:10pts.wt. or more, pref., 10 - 200pts.wt. of an inorg. filler is compounded with 100pts.wt. of thermoplastic rubber or resin and, if necessary, an aging inhibitor, an antistatic agent, an ultraviolet absorber, pigment and a dye are added thereto. This resin composition is formed into sheets in parts by a calender and four respective sheets of the same kind are laminated under heating to form a sheet and fine embossed parts having mean roughness of 10 - 0.1mum are subsequently formed to the surface of said sheet by an embossing roll and the obtained sheet is laid to obtain a template shop for steel structure.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the actual construction of steel structures, and more specifically, the present invention relates to the field of steel structure construction, and more specifically, the present invention relates to a method for using water-based ink that is used when drawing actual construction drawings and that is easy to erase. This refers to the actual steel structure that can be used without any damage for a long period of time.

[Prior art]

Traditionally, steel structure construction sites have been used by covering the floor with plywood, etc., and coating the surface with paint.

[Problem that the invention seeks to solve]

However, in actual steel structures where plywood or the like is laid and paint is applied to the surface, the following problems arise.

■ Since the paint is applied to the surface of plywood, not only is the surface hard and slippery, but the paint may peel off during use and the surface may become uneven, requiring reapplication.

■ For reuse, actual-size blueprints that are no longer needed are erased with a damp rag or mop, but they do not erase sufficiently and the actual-size blueprints become difficult to see as they are used over and over again.

■ The painted surface is glossy, the water-based ink does not adhere well, and it is difficult to see the actual size design drawings. [Means for solving the problem] The present invention is an iron coater that solves all of these conventional problems. The purpose is to provide a site for construction dimensions.

That is, the present invention provides: (1) An actual steel structure whose surface layer is made of a thermoplastic sheet made of thermoplastic rubber or chlorine-free thermoplastic resin.

(2) The iron structure according to claim 1, wherein the thermoplastic sheet contains 10 parts by weight or more of a filler based on 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin. Place.

(3) The thermoplastic sheet contains 10 to 10 parts by weight of filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin.
Claim 1, which contains 200 parts by weight
The steel structure actual size according to any one of Items 1 to 2.

(4) The average roughness of the thermoplastic sheet expressed in one set is 10
The steel structure site according to any one of claims 1 to 3, which has a fine uneven surface of μm to 0.11 Im.

(However, f(χ) is a function indicating the cross-sectional curve of the unevenness, and L is the measured length of the cross-sectional curve.) (5) The average roughness of the thermoplastic sheet expressed by one equation is 5μ
The steel structure on-site according to any one of claims 1 to 4, which has fine irregularities of m to 0.5 μm.

(6) The average roughness expressed by the above formula 1 is LOum-0,1
Bedding sheet for steel structures on site, consisting of thermoplastic sheet of μm (thermoplastic sheet contains 10 parts by weight or more of filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin) A bedding sheet for steel structures on site according to claim 6.

(8) The thermoplastic sheet contains 10 to 10 parts by weight of filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin.
Claim 6 which contains 200 parts by weight
The bedding sheet for steel structures on site as described in any one of Items 7 to 7.

(9) Flooring for steel structures on site according to any one of claims 6 to 8, wherein the thermoplastic sheet is lined with a base material such as woven fabric or nonwoven fabric on the back side. sheet.

0 [D The thermoplastic sheet according to any one of claims 6 to 9, wherein a base material such as a woven fabric or a non-woven fabric is embedded somewhere in the thickness direction of the thermoplastic sheet. Flooring sheet for steel structures on site.

The gist is:

Thermoplastic rubbers used in the present invention include non-vulcanized chlorosulfonated polyethylene, block styrene-butadiene rubber such as styrene-butadiene-styrene block copolymer, and block styrene-butadiene rubber such as styrene-isoprene-styrene block copolymer. Examples include styrene isoprene rubber, thermoplastic urethane rubber, and oil-extended products thereof.

These can be used alone or in combination.

Examples of thermoplastic synthetic resins that do not contain chlorine atoms include polyolefin resins such as polyethylene and polypropylene, homopolymers and copolymers such as vinyl acetate resins, polyamide resins, acrylic resins, and urethane resins. These can be used alone or in combination.

Inorganic fillers to be added to thermoplastic rubbers or thermoplastic resins that do not contain chlorine atoms include calcium carbonate, magnesium carbonate, magnesium hydroxide, aluminum hydroxide, calcium oxide, magnesium sulfate, titanium oxide, etc., magnesium, aluminum, Oxides, hydroxides or salts containing titanium etc. can be used.

The amount of these inorganic fillers used is 1 part or more per 100 parts by weight of thermoplastic rubber or thermoplastic resin, and 10 parts by weight.
If it is less than the weight part, the water-based ink used to draw the blueprint tends to have a slightly poor grip. The amount is preferably 10 to 200 parts by weight in view of the adhesion of water-based ink and the mechanical strength of the sheet.

For thermoplastic rubber or thermoplastic resin, process oils such as aromatic, naphthenic, and paraffinic oils are added as necessary.
Various conventional resin additives such as anti-aging agents, antistatic agents, ultraviolet absorbers, pigments, dyes, etc. can be added.

Antiaging agents that can be blended into thermoplastic rubber or thermoplastic resin before the sheet forming process include 2.6-ditertiarybutyl-P-cresol, 4.4°thiobis-(
Examples include phenolic anti-aging agents such as 3-methyl-6-tert-butylphenol. Examples of antistatic agents include cationic or nonionic surfactants, and examples of UV absorbers include hydroquinone UV absorbers, salicylic acid UV absorbers, benzophenone UV absorbers, and benzotriazole UV absorbers. can be mentioned. Of course, these resin additives are not limited to the exemplified types.

These resin additives are used in a usual amount, for example, 5 parts by weight or less per 100 parts by weight of thermoplastic rubber or thermoplastic resin.

In the present invention, it is also possible to form fine irregularities on the surface of the thermoplastic rubber or thermoplastic synthetic resin sheet. The size of the fine irregularities is indicated by the average roughness expressed by the following formula 1, and the range of R1 is 10 μm to O.l p m.

(However, R1 is the average roughness, [(X) is a function indicating the cross-sectional curve seen from the sheet cross section of the unevenness formed on the surface of the thermoplastic rubber or thermoplastic synthetic resin sheet, and L is the measured length of the cross-sectional curve. ) If the average roughness R is less than 0.1 μm, the surface of the thermoplastic rubber or thermoplastic synthetic resin sheet is no different from that of a flat thermoplastic rubber or thermoplastic synthetic resin sheet with no unevenness formed on its surface. Average roughness R
If 1 exceeds 10 μm, the design will be difficult to erase when wiped with a wet mop after several days, and a very thin trace of the design will tend to remain on the sheet surface. In the present invention, the particularly preferred average roughness is 5 μm or more. It is 0.5 μm.

The thermoplastic rubber or thermoplastic synthetic resin sheet used in the present invention may be lined with a base material such as a woven or nonwoven fabric made of natural fibers, synthetic fibers, inorganic fibers, etc., or The base material may be embedded at any location in the thickness direction of a thermoplastic rubber or thermoplastic synthetic resin sheet. When using sheets lined with a base material or embedded with a base material in this way, they have excellent dimensional stability, and gaps between the sheets may occur in the actual steel structure, or the sheet periphery may warp. This is preferable. A particularly preferred base material is a nonwoven fabric mainly composed of glass fibers.

Further, in the present invention, it goes without saying that the thermoplastic rubber or thermoplastic synthetic resin sheet can be used not only as a single-layer sheet but also as a multi-layer sheet.

Further, as for the color of the sheet, a green color is preferable since it does not cause eye strain, and even among green colors, a slightly dark green color is more preferable.

Further, the thickness of the sheet is preferably 0.5- or more, and 0.5- or more.
If it is less than m+a, it will not only have poor durability as a bedding sheet for actual site use of steel structures, but also the stability of riveting for determining reference positions used when drawing blueprints will be poor.

〔Example〕

Example 1 TRII (10) (Styrene-butadiene 100! manufactured by Shell Kagaku Co., Ltd. (1-part polyurethane copolymer thermoplastic rubber) Naphthene-based resin oil
10 Calcium carbonate
150 Pigment (green)
2. Dispense the resin composition of the above formulation into sheets with a thickness of 0.4 mm using a calendar, and divide each sheet into 4 sheets of the same type.
The sheets are heat laminated to form a 1.6 m thick sheet.
Then, unevenness was formed on the surface using an embossing roll with a 300-mesh satin texture, and this sheet was laid down to obtain the actual size of the steel structure.

The ink coverage, ink erasability, walkability, durability, and dimensional stability of this actual steel structure were measured using the following test methods.

(Ink transfer, ink erasability) A blueprint is drawn on a sheet with water-based ink, and after the ink dries, the adhesion of the ink is wiped off with a dry cloth, and the quality of the ink transfer is evaluated based on the condition of the remaining ink on the sheet. The erasability of the ink was evaluated by wiping it with a water-soaked cloth and checking the remaining state of the ink on the sheet. The results are shown in the table.

Criteria for judging ink coverage◎...The lines on the blueprint were dark and did not disappear at all.

○...The lines on the blueprint were dark, and although a small portion had disappeared, the blueprint remained clear.

Mouth... The lines on the blueprint were faint, or only a small portion had disappeared, but the blueprint was fully readable.

△...The lines on the blueprint were so thin that some of them disappeared and became mottled, making the blueprint difficult to read.

×...The lines on the blueprint were faint (more than half of them had disappeared, making the blueprint unreadable.

Criteria for determining the erasability of ink ◎...The design is erased cleanly, and the sheet surface is not colored with the color of the ink.

O: The blueprint has disappeared completely, and only a small portion of the sheet surface has been colored with the color of the ink. Colored.

Δ...The blueprint has disappeared, but the entire surface of the sheet has been colored with a slightly darker ink color.

×...The design drawing did not completely disappear, leaving traces of the design drawing on the sheet surface, and the entire sheet surface was colored with the color of the ink.

(Walkability) We actually walked on the actual site of the steel structure and investigated whether it would slip or get caught.

Criteria for determining walkability: ◎...No slipping or getting caught while walking.

O...I almost never slip or get caught while walking.

Mouth: Sometimes it slips or gets caught while walking, but it does not interfere with walking at all.

Δ: Occasionally slips or gets caught while walking, causing some difficulty in walking.

×: It is dangerous to often slip or get caught while walking.

(Durability) After actually using the actual steel structure for one year, there was no surface peeling, damage to the surface, or not only the surface.
I observed it to see if it was damaged.

Durability Judgment Criteria ◎...No surface peeling, no surface damage, no damage, and no change in surface condition.

O: There is no surface peeling, surface damage, or breakage, and there is almost no change in the surface condition.

Mouth: There was no surface peeling, surface damage, or damage at all, and slight unevenness from shoe soles was observed on the surface.

Δ: There is surface peeling and repainting is necessary.

×...Surface damage and breakage are observed, and replacement is required.

(Dimensional stability) We actually used the actual steel structure for 6 months and observed that gaps appeared between the sheets that were pasted together, and that the edges of the sheets warped.

Criteria for determining dimensional stability: ◎... No gaps between sheets and no warping of the sheet periphery.

O: An extremely small gap is observed in a small portion between the sheets, but there is no warping of the sheet periphery at all.

Mouth: An extremely small gap is observed between the sheets, but there is no warping of the sheet periphery at all, and there is no problem in creating the actual size design drawing.

Δ...Extremely small gaps are observed between the sheets, curling is observed at the sheet periphery, and there are some areas where ink does not adhere when creating a full-scale design drawing.

×...Gap is observed between the sheets, and
There is some warpage on the sheet periphery, and there are some areas where ink does not adhere when creating the actual size design drawing.

Examples 2 to 4 Ethylene-brobylenebu Fuku copolymer
100ml 1 part (melt index 1.0) Ethylene-vinyl acetate copolymer
5 (vinyl acetate content 20χ) Pigment (green) 2 A resin composition with the above formulation and a resin composition in which 50 parts by weight of calcium carbonate was blended with the above resin composition, each of which was extruded to a thickness of 0.8
A sheet of 1.6 m in thickness was prepared by heat laminating each sheet of the same type to obtain a sheet with a thickness of 1.6 m, and then unevenness was formed on the surface using an embossing roll with a 150-mesh satin texture to make it suitable for steel structures on site. I got a bedding sheet. In addition, a sheet using the above resin composition that was not embossed and had no irregularities was also prepared. The actual size of the steel structure was obtained by laying down these sheets.

The ink coverage and ink erasability of these steel structures at actual scale,
Walkability, durability, and dimensional stability were measured using the same test methods as in Example 1. The results are shown in the table.

Comparative Examples 1 and 2 Plywood plywood was laid down and a green acrylic paint and a urethane paint were respectively applied to the surface to obtain an actual steel structure.

The ink coverage, ink erasability, walkability, durability, and dimensional stability of each actual steel structure were measured using the same test methods as in Example 1. The results are shown in the table.

[Effect]

Since the surface layer of the iron horizontal actual size sheet of the present invention is made of thermoplastic rubber or a thermoplastic synthetic resin sheet that does not contain chlorine atoms, water-based ink used when drawing actual size design drawings is easily applied. On the other hand, when erasing water-based ink, it can be erased cleanly and reliably, and it also has excellent walkability without slipping or getting caught when walking, and has extremely little surface damage or breakage (durable). Not only does it have excellent properties, but it also has excellent dimensional stability with no curling around the sheet periphery.

On the other hand, it is clear from the examples and comparative examples that products using veneer plywood not only have problems with ink transfer and ink erasability, but also have poor walkability, durability, and dimensional stability, making them unsuitable. It is. In addition, it has all the general properties necessary for a bedding sheet, and it is clear that it is most suitable as a bedding sheet for actual steel structures.

Claims (10)

[Claims] (1) An actual steel structure whose surface layer is made of a thermoplastic sheet made of thermoplastic rubber or thermoplastic resin that does not contain chlorine atoms. (2) The iron structure according to claim 1, wherein the thermoplastic sheet contains 10 parts by weight or more of a filler based on 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin. Place. (3) The thermoplastic sheet contains 10 to 10 parts by weight of filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin.
Claim 1, which contains 200 parts by weight
The steel structure actual size according to any one of Items 1 to 2. (4) The average roughness of the thermoplastic sheet expressed by formula I is 1.
The steel structure site according to any one of claims 1 to 3, which has a fine uneven surface of 0 μm to 0.1 μm. R_a=1/L∫＾L_0｜f(X)｜dX・・・・・・
......I (However, f(X) is a function indicating the cross-sectional curve of the unevenness, and L is the measured length of the cross-sectional curve.) (5) The average roughness of the thermoplastic sheet expressed by formula I is 5.
The steel structure site according to any one of claims 1 to 4, which has fine irregularities of μm to 0.5 μm. (6) The average roughness expressed by the above formula I is 10 μm to 0.
Steel structure flooring sheet made of thermoplastic sheet with a thickness of 1μm (7) The iron structure according to claim 6, wherein the thermoplastic sheet contains 10 parts by weight or more of a filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin. Bedding sheet for venue. (8) The thermoplastic sheet contains 10 to 10 parts by weight of filler per 100 parts by weight of thermoplastic rubber or chlorine-free thermoplastic resin.
Claim 6 which contains 200 parts by weight
The bedding sheet for steel structures on site as described in any one of Items 7 to 7. (9) Flooring for steel structures on site according to any one of claims 6 to 8, wherein the thermoplastic sheet is lined with a base material such as woven fabric or nonwoven fabric on the back side. sheet. (10) The thermoplastic sheet according to any one of claims 6 to 9, wherein a base material such as a woven fabric or a nonwoven fabric is embedded somewhere in the thickness direction of the thermoplastic sheet. Flooring sheet for steel structures on site.