Technical advantages and performance comparison of glue injection and threading aluminum profiles

1. Technical advantages of glue injection and threading aluminum profiles

Principle of glue injection:

1, first, design a heat insulation groove on the aluminum profile of the door, window or curtain wall .

2Inject the two-component polyurethane insulation glue into the insulation tank.

3After the heat-insulating glue reacts quickly to form a strong polymer, the temporary bridge at the bottom of the heat-insulating groove is cut off, and the aluminum door, window and curtain wall profiles are insulated. The hot glue is divided into two parts, the inner and outer parts, to achieve the purpose of blocking heat exchange.

Principle of threading:

The threading process is to connect the aluminum profile with two heat-insulating strips The inner and outer parts are connected to prevent the conduction of heat inside and outside the aluminum profile and achieve energy saving.

Technical advantages of glue injection and threading aluminum profiles: span>

Glue injection and strip aluminum alloy doors and windows , has the characteristics of light weight, high specific strength, good rigidity, large lighting area, good sealing, waterproof and sound insulation performance, long service life, etc. It can significantly reduce the heat exchange inside and outside the building, achieve obvious heat insulation, energy saving and good environmental protection. Effect.

Glue injection and threading projects It uses the company’s technical advantages and existing production site facilities to introduce world-leading equipment and technology to produce new glue-injected thermal insulation cold bridge high-performance architectural aluminum alloy profiles. Project products can choose materials with corresponding properties according to indoor and outdoor environmental requirements to increase the practicality and decoration of doors and windows and meet the decoration needs of different consumer classes

2. Performance comparison of glue injection and threading aluminum profiles

Compound insulated aluminum profiles are divided into two types, one is a strip profile, the other The first type is glue-injected profiles; the strip profiles are divided into two types: nylon 66 and PVC strips. Injection profile is to inject polymer polyurethane insulation material into the middle notch of the aluminum alloy profile, and then solidifies to form a heat insulation layer to achieve the purpose of heat preservation and energy saving. Doors, windows and curtain walls made of the above two types of materials are called thermal insulation and energy-saving doors, windows and curtain walls.

At present, the insulating door and window profiles with a large market share are strip profiles, and In the past, imported polyurethane glue injection equipment and polyurethane glue were more expensive, which made the cost of glue-injection insulated doors and windows higher. As a result, they occupied a smaller share in the domestic market and could only be used in some high-end windows and export profiles. At present, the latest glue injection equipment and polyurethane glue independently developed by relevant domestic companies have reached the level of foreign imported products in terms of performance, but the price is much cheaper. The cast profiles can meet or even exceed the heat-insulating aluminum profile standards officially promulgated by the country. , has a strong competitive advantage in terms of performance and cost. Let’s make a comprehensive comparison between this cast-type profile and the strip-type profile.

(1), Insulation profile cost analysis
The cross-sectional area of ​​glue-injected profiles is smaller than that of threaded profiles, and in order to ensure the strength of the profile, the threaded profiles must be designed with threaded grooves Wider, on the one hand, the light-transmitting area of ​​the window is smaller, and on the other hand, more aluminum is used per unit length of the profile. Usually the width of the slot of the casting glue is smaller than the width of the strip glue0.8cm, it is calculated that the yield rate of glue-injected aluminum profiles is higher than that of strip-toned profiles11.8%around, manufactured1000A square meter of doors and windows saves about approximately 1ton profile.
(2) Comprehensive performance analysis and comparison
1.Intensity
Polyurethane injection composite aluminum profile Stronger than nylon66. Since polyurethane is poured into the heat insulation groove of the aluminum profile and solidified to form a heat insulation bridge, which is a process in which the polyurethane and the aluminum alloy are bonded together, the aluminum material has high strength.
The strip-type composite aluminum profile is the partition The hot strip is passed into the process tank of the two aluminum profiles, and then rolled into one piece. The rolling process causes the internal structure of the material to change, generating stress that worsens the overall strength of the profile and even causes obvious cracks. Make it a waste product. In order to prevent cracks during the rolling process, the hardness of the profile must be controlled not to be too high during extrusion. In this way, in places with higher requirements, such as sports venues, curtain walls, natural history museums, coastal areas and earthquake-prone areas, castable profiles show outstanding advantages.
2.Plasticity
Polyurethane-injected aluminum profiles have better bending properties than strip-type profiles. Nowadays, there are many kinds of doors and windows, and there are more and more special-shaped doors and windows, which requires that the plasticity of the profiles must be good. Cast aluminum profiles are easy to process for doors and windows of any shape. However, due to the weak connection between the heat insulation strip and the profile of the through-strip profile, when the profile deforms greatly, the heat insulation strip is easy to come out of the connection groove of the aluminum profile, which limits the applicable window types.
(3) Thermal insulation effect and double color inside and outside
Polyurethane injection composite aluminum profile and nylon66 can achieve two colors. The aluminum alloy part of the threaded composite aluminum profile is extruded twice, and the inner and outer parts of the aluminum profile are surface treated separately; the two-color structure can be completed by toothing, threading, and rolling. Pouring-type two-color forming process;

( 1), aluminum profiles inside and outside The two parts are extruded twice and surface treated separately.

（2), the aluminum profiles are composited through special equipment span>—Glue injection—cut bridge ,Currently , two-color glue injection has become a unique technical advantage of our company.

In terms of color, the interior and exterior two-color windows can not only achieve the decorative effect of the exterior, but also achieve harmony with the interior decoration. Unified, it meets the needs of modern and fashionable architecture and meets the architect’s personalized design requirements.

Comparison table: