Composite type building framework and manufacturing method thereof

Abstract

The invention discloses a composite type building framework and a manufacturing method thereof. The composite type building framework comprises a plastic framework base material. A PP composite layer sheet is connected with a working face of the plastic framework base material in a hot mode, the PP composite layer sheet comprises a non-woven layer, a PP mixture laminated layer and a pure PP film layer which are connected into a whole part, and the pure PP film layer is connected with the upper surface of the PP mixture laminated layer in a hot mode; and the non-woven layer is connected with the lower surface of the PP mixture laminated layer in a hot mode, and the non-woven layer faces to the working face of the plastic framework base material and is connected with the working face of the plastic framework base material together in a hot mode. Firstly PP particles are extruded and melted, the PP particles are mixed with 30-50 mm fiberglass evenly to be co-extruded and enter a thermal insulated cylinder to be stored temporarily, then quantitative extrusion is conducted to fall on the PP composite layer sheet located at the bottom of a lower mould and a parison is formed after an upper mould and a lower mould are assembled, pressure-maintained and cooled; vertical walls extending upwards are arranged on the periphery of the parison, a rib plate is arranged on the upper end surface, and a composite type building framework finished product is formed after the upper mould is pressure-released and backhauled, and the parison breaks away from the upper mould and is deburred. The composite type building framework can be used repeatedly, is low in construction cost, and does not stick with concrete.

Description

technical field [0001] The invention relates to a composite building template, and also relates to a manufacturing method of the composite building template, which belongs to the technical field of building templates. Background technique [0002] In the process of building construction, the formwork needs to be supported in occasions such as concrete pouring, and the formwork is supported by keels. In places with large areas such as pouring floors, wooden formwork is often used, and most of the wooden formwork is plywood. Since the formwork has to bear a large load, there are high requirements for the strength of the formwork. Where the concrete layer is relatively thick, it is often necessary to use a thicker formwork or increase the support density of the keel. And because the formwork cannot be disassembled until the concrete has a certain strength, the formwork needs to work in the outdoor environment for many days after each formwork is erected, while the wooden form...

AI Technical Summary

Problems solved by technology

And because the formwork cannot be disassembled until the concrete has a certain strength, the formwork needs to work in the outdoor environment for many days after each formwork is erected, while the wooden formwork is exposed to the outdoor environment, exposed to the sun and night, and exposed to wind and rain, so it is easy to Corruption, high scrap rate

For example, under the scorching sun, the wooden formwork will soon crack due to excessive loss of moisture, reducing the strength; in the season with more rain, the wooden formwork is easily deformed by moisture and gradually decays

If the above situation occurs before the formwork is removed, it will bring certain hidden dangers to the construction quality and safety.

Due to the above reasons, wooden formwork can only be used once, resulting in a huge waste of resources and greatly increasing the construction cost

[0003] In order to improve the strength of the template, steel molds are mostly used in the market. The steel mold is easy to corrode and bond with the concrete. Before use, the working surface of the steel mold needs to be brushed with machine oil. Concrete bonding, the back of the formwork will still corrode due to the lack of oil

In addition, the weight of the steel mold is heavy, the area of ​​a single steel mold is small, and multiple splicing is easy to cause the bottom surface of the concrete to be uneven

When the formwork is removed, due to the workers' throwing and smashing, it is easy to cause local deformation of the steel formwork, which will further affect the flatness

[0004] In order to improve the accuracy of the formwork, aluminum alloy formwork is also being used more and more, but the aluminum alloy formwork needs to be welded, the cost is high, and the problem of bonding with concrete still cannot be solved, and the density is still as high as 2.71g / cm³

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