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High-strength plywood for building shutter panel

A technology for building formwork and plywood, which is used in construction, building structure, formwork/formwork components, etc., can solve the problems of less turnover, large one-time investment, inconvenient disassembly and assembly, etc., and achieves more turnover and low amortization cost. , Easy to cut effect

Inactive Publication Date: 2009-08-05
NANJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the current formwork operation process, commonly used formwork panels include steel plate panels and traditional bamboo (wood) plywood panels, etc., among which steel plate panels have disadvantages such as heavy weight, high cost, inconvenient disassembly and assembly, and large one-time investment; while traditional bamboo (wood) Although the one-time investment of plywood panel is small, its deformation is large, the number of turnovers is small, the quality of the processed concrete is not high, and it is difficult to meet the high standard requirements, so it is used in fair-faced concrete or concrete structures with high quality requirements. question

Method used

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  • High-strength plywood for building shutter panel
  • High-strength plywood for building shutter panel
  • High-strength plywood for building shutter panel

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:

[0018] In the accompanying drawings, 1 is the covering film, 2 is the panel, 3 is the core board, 4 is the outer layer board in the core board, and 5 is the inner layer board in the core board.

[0019] Such as figure 1 , 2 , and shown in 3, a high-strength plywood for building formwork panels, including a film 1, a panel 2 and a core board 3, the thickness of the plywood is 21mm. The covering film 1 is a phenolic resin laminated film. According to requirements such as wear resistance, the laminated film amount is 80-200g / m2 on the front side of the plywood, and about 80g / m2 on the reverse side; the thickness of the panel 2 is about 1-200g / m2. 3mm, the panel 2 is glued together by dipped glass fiber mat, and the adjacent layers are perpendicular to each other; the core board is a three-layer structural board, each layer is a laminated board, the ou...

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Abstract

The invention provides a veneer which is used for fair-faced concrete building template and has the advantages of lightness, high strength, convenient disassembly and assembly, easy cutting, high cost performance, weather resistance, corrosion prevention, strong durability, easy demoulding, high turnover frequency and being suitable for industrial production. The veneer consists of a covering film, a panel and a core plate; the covering film is prepared from a resin pressed film; the panel is prepared by gluing a gum dipping fiber reinforced composite material; and the core plate is a three-layer structural plate. The invention is mainly used for panels in building template systems, particularly for panels of fair-faced concrete templates.

Description

technical field [0001] The invention relates to a high-strength plywood for building formwork, which is mainly (but not exclusively) used as a panel in a building formwork system, especially as a clear-faced concrete formwork panel. Background technique [0002] Building formwork is an important tool in the construction of concrete structures. Statistics show that in the construction process of general concrete structures, formwork works account for 20% to 30% of the cost of concrete structure projects, occupy 30% to 40% of the workload, and account for about 50% of the construction period. In the current formwork operation process, commonly used formwork panels include steel plate panels and traditional bamboo (wood) plywood panels, etc. Among them, steel plate panels have disadvantages such as heavy weight, high cost, inconvenient disassembly and assembly, and large one-time investment; while traditional bamboo (wood) Although the one-time investment of plywood panel is s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G9/02B32B27/06B32B21/08B32B21/10B32B5/12B32B7/12
Inventor 刘伟庆方海杨会峰岳孔
Owner NANJING UNIV OF TECH
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