WO1994009227A1 - Coffrage en resine thermoplastique pour beton - Google Patents

Coffrage en resine thermoplastique pour beton Download PDF

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Publication number
WO1994009227A1
WO1994009227A1 PCT/JP1993/001474 JP9301474W WO9409227A1 WO 1994009227 A1 WO1994009227 A1 WO 1994009227A1 JP 9301474 W JP9301474 W JP 9301474W WO 9409227 A1 WO9409227 A1 WO 9409227A1
Authority
WO
WIPO (PCT)
Prior art keywords
thermoplastic resin
concrete
concrete formwork
formwork
glass fiber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1993/001474
Other languages
English (en)
Japanese (ja)
Inventor
Shohei Masui
Seiji Suzuki
Munehisa Togami
Takeo Kitayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP4275770A external-priority patent/JP2727889B2/ja
Priority claimed from JP30361892A external-priority patent/JPH06146576A/ja
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to KR1019940702025A priority Critical patent/KR100308440B1/ko
Priority to EP93922630A priority patent/EP0625620A4/fr
Publication of WO1994009227A1 publication Critical patent/WO1994009227A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/346—Manufacture of moulds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/028—Forming boards or similar elements with reinforcing ribs on the underside

Definitions

  • the present invention relates to a background art related to a concrete formwork made of thermoplastic resin.
  • Concrete surface ⁇ The surface of the concrete panel (hereinafter collectively referred to as the concrete surface) is covered with natural stones such as marble and tiles.
  • a surface decoration material usually, an adhesive, cement cement, or the like is applied to the surface of the concrete and bonded.
  • the bonding strength between the adhesive layer and the concrete surface is not sufficient, and the surface decoration material is not bonded to the adhesive layer. May be separated from the concrete surface and cause an unexpected accident. When it occurred in a high place such as a building, it was extremely difficult and dangerous to repair it.
  • thermoplastic resin containing a specific amount of glass fiber of a specific length was used, the thickness of the top plate and the height of the ribs had a specific relationship, and thermal press molding was performed.
  • the concrete formwork made of thermoplastic resin manufactured by the method can be used very effectively as a concrete formwork without having the above-mentioned disadvantages.
  • the present inventors have found that it is very effective to provide a concave or convex pattern on the surface of the cleat form, and have reached the present invention. . [Brief description of the drawings]
  • FIG. 1 shows an example of a thermoplastic resin concrete formwork viewed from the rib side of the present invention.
  • FIG. 2 shows a part of a cross section of the concrete formwork shown in FIG.
  • FIGS. 3A to 3C show the outline of the method for producing the thermoplastic resin concrete formwork of the present invention by injection press molding.
  • FIGS. 4A to 4C schematically show a method for producing a thermoplastic resin concrete formwork of the present invention by injection press molding.
  • Fig. 5A and Fig. 5B show a book based on the sheet stamping method. The outline of the method for producing the thermoplastic resin concrete formwork of the present invention will be described.
  • Figure 6 shows the impact test equipment used for the impact strength test.
  • Figure 7 shows an example of a thermoplastic concrete formwork with a pattern on the panel surface.
  • FIG. 8 shows a cross section of the thermoplastic resin concrete form shown in FIG.
  • FIGS. 9A to 9E show examples of various convex patterns provided on the panel surface.
  • the average fiber length is 0.1 mu! 550
  • a thermoplastic concrete formwork (hereinafter simply referred to as “container”) formed by thermopress molding a thermoplastic resin containing 15 to 35% by weight of glass fiber.
  • the glass fiber blended in the thermoplastic resin has a length of 0.1 to 50 bands, preferably 1 to 15 mm. If a glass fiber shorter than this range is used, sufficient strength as a concrete formwork cannot be obtained, and it is longer than this range. When glass fiber is used, the filling of the glass fiber into the rib portion is poor, and a product in which the glass fiber is uniformly dispersed cannot be obtained. There is a problem that makes it difficult to use.
  • the glass fiber diameter may be about 1 to 50 ⁇ m, which is usually used, and is not particularly limited.
  • Such glass fibers may be untreated on the surface, but preferably are treated with a surface such as aminonlan or vinyllan.
  • the form of use may be a single fiber, or a fiber bundle in which tens to hundreds of single fibers are converged with a sizing agent.
  • the amount of the glass fiber blended in the thermoplastic resin is 15 to 35 as the glass fiber content due to the physical strength of the concrete form and the production problems. It should be in the range of preferably 20 to 30% by weight.
  • thermoplastic resin used in the present invention examples include: polyethylene, polypropylene, polyvinyl chloride, ABS resin, polyamide, polycarbonate, and the like. Common thermoplastic resins such as polyethylene latex, modified products thereof, polymer alloys, or mixtures thereof, are particularly preferred. Polypropylene resins such as a propylene homopolymer or a copolymer are preferred.
  • thermoplastic resin may be blended with various additives such as a heat stabilizer and an ultraviolet ray inhibitor, a coloring agent, and an inorganic filler as required.
  • the glass fiber content in the case where such a third component is blended is intended only for the thermoplastic resin excluding these components.
  • the thermoplastic resin concrete formwork of the present invention has a shape in which a reinforcing rib is integrally formed on the top plate as a single molded body. If necessary, a side plate may be provided around the top plate. In this case, a part of the rib is usually provided around the top plate as a side plate, but it is provided separately from the rib. It may be of any width, height, and preferably equal to or lower than the rib.
  • the structure in which the top plate and the rib are integrally formed as the same molded body by simultaneously forming the top plate and the rib with the same material is used. It does not include those made separately from each other and joined by an adhesive or subsequent welding.
  • the thickness t of the top plate is in the range of 2.5 to 5 mm, and if the thickness is less than 2.5 mm, the mechanical strength becomes poor. Beyond 5 mm, there is no particular advantage, and the unnecessary thickness is not only uneconomical, but also impairs the benefits of weight reduction.
  • the width w of the rib is usually 0 at the base of the top plate. 5 t to t, and the rib tip is usually the same width.Forcing the rib tip to be slightly thinner, preferably less than 2 degrees between the base and the base. A taper angle of 1 ° or less, more preferably 0.5 ° or less is preferred to prevent the molded article from slipping off during manufacturing.
  • Such ribs may be provided in either the length direction or the width direction of the concrete formwork, or may be provided in both of them.
  • the number of ribs depends on various conditions such as the size of the concrete form and the thickness of the top plate, and is not particularly limited. 20-300 Provided at hidden intervals.
  • auxiliary ribs having a height lower than the ribs, separate holes, etc. may be used as necessary. It may be provided as appropriate.
  • thermoplastic resin-concrete formwork of the present invention is obtained by subjecting the above-mentioned thermoplastic resin containing glass fiber to hot press molding, thereby forming an integral molded article. It can be manufactured in a special way.
  • thermoplastic resin concrete of the present invention There are various methods for molding a thermoplastic resin, such as an injection molding method and a method of pouring a molten resin into a mold, and the thermoplastic resin concrete of the present invention is used. Molding must be performed by the hot press method for molds, and glass fibers of the desired length are contained because the glass fibers are severely cut during production by injection molding and the like. Is difficult to fill, the filling of the ribs with resin is poor, or the product is warped or deformed. The shape is produced, and only insufficient products can be obtained as a practical concrete formwork.
  • the glass fiber-containing thermoplastic resin used as a raw material may be a melt of the glass fiber-containing thermoplastic resin, or may be a pre-manufactured glass resin.
  • Fiber-containing thermoplastic sheet may be, for example, a stampable sheet heated above the melting temperature of the resin, but when producing high rib products, It is preferable to use the former melt.
  • Examples of the hot press forming method include those shown in FIGS. 3A, 3B, and 3C, and 4A, 4B, and 4C.
  • a pair of upper and lower male and female molds 2 and 3 designed to have a predetermined product shape is used, and a plasticizing device (shown in the figure) is inserted between the two molds whose cavities are not closed.
  • the resin is supplied through a resin passage 4 provided in a mold. It may be supplied into the cavity (hereinafter, this method is referred to as injection press molding), or as shown in Figs. 4A to 4A (using an external supply device 5). It may be supplied (hereinafter, this method is referred to as injection molding).
  • this method is referred to as injection molding.
  • a glass fiber-containing thermoplastic resin sheet is used (hereinafter referred to as a sheet standing method)
  • the sheet is preliminarily heated in an infrared heating furnace or the like.
  • thermoplastic resin concrete formwork of the present invention which is carried out by heating both the molds and then clamping both molds, is usually a product as it is. However, if the smooth concrete surface is left as an exterior, the purpose is to make the surface more smooth. Rather it may also have been stuck is required under Ji the surface material, and with such surface material various thermoplastic resin sheet over preparative, etc. off Lee Lum are exemplified.
  • the concrete form to which the surface material is bonded can be used, for example, in the production of the above-described concrete form, in a melt of a thermoplastic resin containing glass fiber.
  • a glass fiber-containing thermoplastic resin sheet heated to a temperature higher than the melting temperature of the resin between the male and female molds place the surface material between the male and female molds in advance. And can be easily obtained o
  • a concrete type with a concave or convex pattern on the surface is used.
  • the frame is valid. If concrete is cast using a concrete formwork with such a concave or convex pattern, the pattern is transferred to the concrete surface. Then, the concrete surface is roughened by the transferred pattern of unevenness, and the adhesiveness between the concrete surface and the adhesive or cement mortar is remarkable. It will improve.
  • Such a concave or convex pattern is such that when the pattern is transferred to the concrete surface, the concave and convex patterns are added to the concrete surface.
  • the shape is not limited as long as it is not limited, such as various column-shaped patterns, recesses such as blinds, lattices, wavy shapes, bricks, and so on, or patterns in which convex portions are continuous, or individual squares
  • a plurality of projections such as a circle, a cross, and the like may be provided.
  • the proportion of such a pattern occupying the panel plane is usually 10% or more, preferably 30% or more, as the projected area of the concave or convex portion.
  • each pattern is arbitrary enough to provide sufficient bonding strength when adhesive or cement mortar is applied to the concrete surface. This is necessary. If it is too large or too small, the difference from the smooth surface will not be sufficient, and the improvement of the adhesive effect will be poor.
  • the position of the pattern is almost even on the entire surface of the panel, but this is not the case when the surface decoration material is bonded only to a part of the cast concrete surface. It may be partial depending on the intended use.
  • the pattern is concave, it is not necessarily less than the thickness of the panel.
  • the concrete formwork made of thermoplastic resin of the present invention is light in weight, has good nailing and sawing properties, and has extremely good workability because no pier is required. Also has many advantages such as excellent recyclability, and the concrete formwork of the present invention can be used by itself, and of course, Since it can be used in combination with a clear formwork, its practical utility value is very high.
  • a concrete formwork having a concave or convex pattern on the panel surface can be obtained by placing concrete using this formwork. Since the pattern corresponding to the irregularities is transferred to the clear surface and the surface becomes rough, cement mortar for bonding surface decoration materials such as marble and tiles, etc. Can firmly adhere to the concrete surface, and as a result, the surface decoration agent can be firmly adhered to the concrete surface.
  • the performance tests and on-site construction tests are evaluated by the following methods.
  • the evaluation was made by measuring the amount of deformation of the concrete formwork when it was driven.
  • This test is similar to an underground beam.
  • the displacement of the concrete formwork is set at 450 mm from the lower part, 900 mm, and 135 mm. Measured at the position of 0 mm, and in any of these parts, if the displacement is 6 mm or less, it is regarded as ⁇ .
  • the ⁇ was defined as 0 for the thighs, and X for exceeding 10 mm.
  • Impact strength Conducted using the impact test device shown in Fig. 6.
  • a 50 mm X 50 mm test piece 7 cut out of the molded concrete formwork is placed with a 2 x 1 inch semi-circular strike core 8 with a tip force diameter of 2 inches.
  • Drop the load 9 from above measure the minimum drop distance (break height) (cm) of the load when the test bus is destroyed, and obtain the destruction obtained by the following formula.
  • the impact strength was taken as the energy.
  • Breaking energy (kg ⁇ cm) Load (kg) X Breaking height (cm)
  • Nailability A 3 inch nail is punched into a concrete formwork, and the nails are visually evaluated based on the nail penetration and the cracks around the nail and around the nails. did.
  • Example 1 A pellet made of polypropylene containing 25% by weight of glass fiber having an average fiber length of 6 ram was supplied to a plasticizer, and heated and melted at 240 ° C. The melt 1 was supplied between the male and female dies with a cavity clearance of about 1 O min through a resin passage 4 provided in the female dies 2. The cavity clearance force on the flat part of the male and female molds is 3.5. The mold is clamped until it becomes a marauder, pressurized and cooled, and the length shown in Fig. 1 is set at 180 ram, A concrete form made of thermoplastic resin having a width of 600 mm was obtained.
  • Top plate thickness 3.5 ram, Rib height: 58.5 mm Width of the base of the rib with the top plate: 3.5
  • Formwork thickness 61.5 mm
  • Number of ribs 11 at equal intervals in the length direction (including both side plates)
  • a total of 6 in the width direction (at 150 mm and 65 0 mm respectively from both sides and both ends in the length direction)
  • Table 1 shows the results of the performance tests and on-site construction tests of the obtained concrete formwork.
  • Examples 2-6, Comparative Example! ⁇ 2 In the same manner as in Example 1 except that the average fiber length and glass fiber content of the glass fiber are changed, and the thickness of the top plate and the height of the rib are changed. Various concrete molds made of thermoplastic resin were obtained.
  • Table 1 shows the results of the performance tests and on-site construction tests of the concrete formwork obtained.
  • Example ⁇ Average fiber length 1 2 Smackable sheet containing 25% by weight of glass fibers of bandits and matrix resin is polypropylene (Ke-plait: Kepler) (Manufactured by Sheet Co., Ltd.) at 220 ° C. This is placed between the male and female molds, then the molds are clamped, pressurized and cooled, and the length shown in FIG. A concrete formwork made of thermoplastic resin with a width of 180,000 and a width of 600 mm was obtained.
  • Top plate thickness 5 Marauder, rib height: 22 mm
  • Root width of rib with top plate 3.5
  • Rib taper angle 0.5 degree
  • Number of ribs 11 at equal intervals in the length direction (including both side plates)
  • Table 1 shows the results of the performance tests and on-site construction tests of the concrete formwork obtained.
  • a stannous sheet (capless type) containing 25% by weight of glass fibers having an average fiber length of 12 and a glass fiber having an average fiber diameter of 10 and having a matrix resin of polypropylene. G: made by Kappa Sheet Co., Ltd.) in a heating furnace until the sheet surface temperature reached 220 ° C.
  • the heating sheet had a cylindrical shape with a diameter of 10 images and a height of 3 mm on the surface of the panel at a height of 20 mm in the vertical and horizontal directions, and a length of 4 mm on the back surface.
  • Both metal pieces are placed between male and female molds having a mold surface that has a rib with a height of 20.5 mm and a thickness of 4 mm that is continuous in the width direction at a band width.
  • the mold is clamped, pressurized (100 kg Z cm 2 ), cooled and cooled to a length of 1,800 mm and a width of 600 mm, as shown in Fig. 7.
  • a concrete mold made of thermoplastic resin having a 4.5 thigh with a projection on the panel surface and a rib on the back of the panel was obtained.
  • the two concrete formwork are placed so that the raised surfaces face each other with a gap of 50 mm, and after the concrete is injected into the gap, cure for one week.
  • a concrete panel with a thickness of 50 thighs was created.
  • the surface of the obtained concrete panel had a cylindrical concave pattern corresponding to the cylindrical protrusion on the surface of the concrete formwork used.
  • Example 8 Using a press molding machine consisting of both male and female molds similar to that used in Example 8, the average weaving was performed from the molten resin passage provided in the female mold with both molds not closed. A required amount of a resin melt of a polypropylene resin composition containing 30% by weight of glass fiber with a fiber length of 1 mm and an average fiber diameter of 10 mm is supplied, and both molds are clamped and pressurized. (190 kg Z cm 2 ), cooled and applied to a panel surface of 1,800 mm in length, 600 mm in width, and 4.5 mm in panel thickness similar to those obtained in Example 8. A concrete concrete formwork made of a thermoplastic resin having protrusions and a rib on the back surface of the panel was obtained.
  • Example 8 Using the obtained concrete formwork, concrete in the same manner as in Example 8. A panel was manufactured and subjected to a tile adhesion test to the panel surface. The result was the same as in Example 8.
  • IP injection press molding and SS is seat stand.
  • the present invention provides a concrete formwork that is lightweight, has excellent nailing properties and sawing properties, and does not require a pier, and has extremely good workability.
  • this formwork can be used in combination with the conventional concrete formwork depending on the place of use, conditions, and the like, and in that respect, its utility is high.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention décrit un coffrage en résine thermoplastique pour béton, que l'on obtient en moulant thermiquement par compression une résine thermoplastique contenant une quantité prédéterminée d'une fibre de verre de longueur moyenne spécifique. Une plaque supérieure et des nervures sont moulées d'une seule pièce, l'épaisseur t de la plaque supérieure et la hauteur h des nervures satisfont aux relations t = 2,5 à 5 mm et t + h = 25 à 70 mm, et si on le désire, des motifs peuvent être formés sur une surface de panneau.
PCT/JP1993/001474 1992-10-14 1993-10-14 Coffrage en resine thermoplastique pour beton Ceased WO1994009227A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1019940702025A KR100308440B1 (ko) 1992-10-14 1993-10-14 열가소성수지로제조된콘크리트형틀
EP93922630A EP0625620A4 (fr) 1992-10-14 1993-10-14 Coffrage en resine thermoplastique pour beton.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP4/275770 1992-10-14
JP4275770A JP2727889B2 (ja) 1992-10-14 1992-10-14 熱可塑性樹脂製コンクリ−ト型枠
JP4/303618 1992-11-13
JP30361892A JPH06146576A (ja) 1992-11-13 1992-11-13 熱可塑性樹脂製コンクリ−ト型枠

Publications (1)

Publication Number Publication Date
WO1994009227A1 true WO1994009227A1 (fr) 1994-04-28

Family

ID=26551612

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/001474 Ceased WO1994009227A1 (fr) 1992-10-14 1993-10-14 Coffrage en resine thermoplastique pour beton

Country Status (6)

Country Link
EP (1) EP0625620A4 (fr)
KR (1) KR100308440B1 (fr)
CA (1) CA2125153A1 (fr)
SG (1) SG45368A1 (fr)
TW (1) TW293859B (fr)
WO (1) WO1994009227A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623434A1 (fr) * 1993-04-28 1994-11-09 Sumitomo Chemical Company, Limited Moule transparent pour béton
EP0623435A1 (fr) * 1993-04-30 1994-11-09 Sumitomo Chemical Company, Limited Procédé pour la fabrication d'un moule pour béton en résine thermoplastique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105735632A (zh) * 2016-02-25 2016-07-06 中国建筑股份有限公司 一种多次周转使用的带框塑料模板及其施工方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555768A (en) * 1978-10-18 1980-04-23 Kichio Tokuyama Panel for molding flask for reinforced concrete
JPS59148840U (ja) * 1983-03-25 1984-10-04 野沢　嘉道 コンクリ−ト型枠用パネル
JPS61176348U (fr) * 1985-04-23 1986-11-04
JPH028459A (ja) * 1988-02-26 1990-01-11 Idemitsu N S G Kk コンクリート打込用型枠及びその製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6128845U (ja) * 1984-07-26 1986-02-21 鹿島建設株式会社 モルタル上塗りコンクリ−ト構造物用型枠材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555768A (en) * 1978-10-18 1980-04-23 Kichio Tokuyama Panel for molding flask for reinforced concrete
JPS59148840U (ja) * 1983-03-25 1984-10-04 野沢　嘉道 コンクリ−ト型枠用パネル
JPS61176348U (fr) * 1985-04-23 1986-11-04
JPH028459A (ja) * 1988-02-26 1990-01-11 Idemitsu N S G Kk コンクリート打込用型枠及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0625620A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0623434A1 (fr) * 1993-04-28 1994-11-09 Sumitomo Chemical Company, Limited Moule transparent pour béton
US5431366A (en) * 1993-04-28 1995-07-11 Sumitomo Chemical Company, Limited See-through concrete form
EP0623435A1 (fr) * 1993-04-30 1994-11-09 Sumitomo Chemical Company, Limited Procédé pour la fabrication d'un moule pour béton en résine thermoplastique
US5525285A (en) * 1993-04-30 1996-06-11 Sumitomo Chemical Company, Limited Process for producing concrete form made of thermoplastic resin

Also Published As

Publication number Publication date
KR940703963A (ko) 1994-12-12
CA2125153A1 (fr) 1994-04-28
KR100308440B1 (ko) 2001-12-01
EP0625620A4 (fr) 1995-03-15
EP0625620A1 (fr) 1994-11-23
SG45368A1 (en) 1998-01-16
TW293859B (fr) 1996-12-21

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