CN204663347U - A kind of Novel fireproof Smoke prevention weather strip - Google Patents

Abstract

The utility model relates to a novel fireproof and smokeproof sealing strip, which comprises a fireproof core material. The outer surface of the fireproof core material is wrapped with a layer of hard PVC sealing shell and the shell seals the fireproof core material inside the shell. The hard PVC One or two middle soft wing strips are arranged in the middle of the PVC sealed shell; correspondingly, one or two side soft wing strips are respectively added on both sides of the hard PVC sealed shell. The beneficial effects of the utility model are: multiple soft wings can be set according to different requirements, so that the structure can be completed through an automatic line, the quality is better, the structure is more reliable, the application range is wider, and it is beneficial to realize the mechanization and automatic production of products , The product quality is stable, and the labor cost is greatly reduced, which brings better market prospects and economic benefits to the enterprise.

Description

A new type of fireproof and smokeproof sealing strip

technical field

The utility model relates to the technical field of door and window sealing, in particular to a novel fireproof and smokeproof sealing strip.

Background technique

In the sealing industry, sealing strips play such roles as sound insulation, dustproof, frostproof, heat preservation, waterproof and energy saving in plastic steel doors and windows, broken bridge aluminum doors and windows, wooden doors and windows or other fields. For example, sealing strips are generally extruded from PVC, modified PVC, EPDM, elastomeric sealing strips (TPV, TPE, TPR, SEBS), silica gel and other materials. However, the above-mentioned materials will reduce their own material properties under high temperature conditions, and the toxic substances released will seriously pollute the atmospheric environment and affect human health. At the same time, the sealing strip currently used adopts the traditional processing method, which needs to produce three parts, assemble, glue, and use five processes to produce the finished product.

Many sealing strips adopt traditional structures. For example, the Chinese patent with the authorized announcement number of CN201225075Y and the patent number of 200820071429.X discloses a fireproof expansion sealing strip, which belongs to the field of door and window sealing technology, and specifically relates to fireproof doors or anti-theft doors. The sealing strip is covered with a flame retardant decorative layer on the top of the flame retardant layer and on both sides of the flame retardant layer, and the upper flat surface of the flame retardant decorative layer is connected with an arc-shaped cavity structure of the same material as the flame retardant decorative layer ; The structure can use the co-extrusion process to produce a continuous length of fireproof sealing strip, which not only improves the production efficiency, but also improves the quality of the product. However, this structure is also a traditional shell, a fireproof inner core plus rubber strips, and also adopts a wrapped structure, which is not only inconvenient to produce, but also has poor sealing performance.

For another example, the authorized announcement number is CN2725486Y, and the Chinese patent with the patent number 200420061216.0 discloses an elastic expansion fireproof sealing strip which is mainly used in fireproof doors, fireproof windows, fireproof shutters, fireproof valves and fireproof glass partition walls, and can also be used in On vehicles, ships, and airplanes, the elastic expansion fireproof sealing strip is composed of a base strip and a sealing strip. The sealing strip and the base strip are made of the same expanded fireproof material and are connected as a whole; It is convenient to make it into a whole with the base strip, and it is also convenient to make it into the same material as the base strip, so that the sealing strip and the base strip have the same functions of fire prevention, expansion and flame retardancy. However, the structure is too simple, especially the base strip itself is a single-layer structure, and the performance is obviously poor.

In this case, on the basis of the above case, on the basis of structural improvement, one of the key technical problems to be solved in the present invention is the formulation of materials, so that the temperatures of the three materials can be adapted to each other, and the three materials with different processing temperatures can be well compounded in the Together. Especially fireproof expanded graphite will expand when it is above 140°C. Therefore, the formula needs to be reasonably optimized to ensure that the soft wing and the outer shell are firmly adhered, while the inner core fireproof material and the outer shell are sticky and non-sticky and will not fall off. As for sticking too firmly (if it is too firm, the shell will shrink and shrink, and the size and appearance of the product will not meet the flatness requirements of the drawing).

In order to achieve a reasonable structure, the previous products need to make "shell, fireproof inner core, rubber strip" and then assemble, and then stick double-sided tape to make a complete product; because the fireproof and smokeproof sealing strips of various countries are strong Inspection of products, and because of the height requirements of fire doors, fire and smoke prevention strips generally have a length of 2 meters to 3 meters, and there must be no joints or breakpoints in the middle; this requires that the three parts have a good size fit, otherwise it will be too If it is tightly assembled, it will not fit in, and if it is too loose, it will easily fall off. This is time-consuming, laborious, and unstable in quality. During production, the process is transferred many times, and the surface is easy to scratch and affect the appearance. In addition, due to many processes, human factors have a greater impact on product quality.

In order to improve work efficiency, reduce the impact of human factors on quality, manufacture better performance fire-proof and smoke-proof sealing strip products, meet the fire-proof and smoke-proof door market for export to the EU and British standards, as well as the future Chinese market. Therefore, in view of the above aspects, it is necessary to make reasonable improvements to the prior art.

Utility model content

In view of the above defects, the utility model provides a new type of fireproof and smokeproof sealing strip which is beneficial to mechanization and automatic production of products, stable product quality, and can reduce labor costs, so as to solve many deficiencies in the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions:

A novel fireproof and smokeproof sealing strip, comprising a fireproof core material, the outer surface of the fireproof core material is wrapped with a hard PVC sealed shell and the shell seals the fireproof core material inside the shell, and the middle part of the hard PVC sealed shell is One or two middle soft wing strips are provided with a certain gap between the two soft wing strips, and each middle soft wing strip is inclined to the two sides of the shell;

Correspondingly, one or two side soft wings are respectively added on both sides of the hard PVC sealed casing.

Correspondingly, the soft wing strips are made of PVC and NBR materials, each middle soft wing strip forms a certain angle with the outer surface of the hard PVC sealed shell, and a double-sided adhesive layer is arranged outside the hard PVC sealed shell;

Or, one side of the exterior of the hard PVC sealed casing is provided with a single piece of soft wing strip.

The beneficial effects of the novel fire-proof and smoke-proof sealing strip described in the utility model are as follows: the single structure of the traditional product is improved, a hard PVC sealed shell is set, and multiple soft wing strips can be set in the middle and both sides of the shell according to different requirements, This structure can be completed through an automatic line, the quality is better, the structure is more reliable, and the application range is wider, which is conducive to the realization of product mechanization, automatic production, stable product quality, and greatly reduces labor costs. Better market prospects and economic benefits.

Description of drawings

Below according to accompanying drawing, the utility model is described in further detail.

Fig. 1 is a structural schematic diagram of the new fire-proof and smoke-proof sealing strip described in Embodiment 1 of the present utility model;

Fig. 2 is a structural schematic diagram of the new fire-proof and smoke-proof sealing strip described in the second embodiment of the utility model;

Fig. 3 is a structural schematic diagram of the new fire-proof and smoke-proof sealing strip described in the third embodiment of the utility model;

Fig. 4 is a structural schematic diagram of the new fire-proof and smoke-proof sealing strip described in Embodiment 4 of the present utility model.

In the picture:

1. Hard PVC sealed shell; 2. Middle soft wing strip; 3. Fireproof core material; 4. Side soft wing strip; 5. Single piece soft wing strip.

Detailed ways

Example 1

As shown in Figure 1, the novel fire-proof and smoke-proof sealing strip described in the embodiment of the present utility model includes a fire-proof core material 3, and the outer surface of the fire-proof core material 3 is wrapped with a hard PVC sealing shell 1, and the shell wraps the fire-proof core The material 3 is completely enclosed inside the shell, and the middle part of the hard PVC sealed shell 1 is provided with one or two middle soft wing strips 2 with a certain gap between the two soft wing strips, and each middle soft wing strip 2 faces the shell Both sides are inclined and each middle soft wing strip 2 forms a certain angle with the outer surface of the hard PVC sealed casing 1 . After the processing is completed, another new technology is to design a complex mold structure to ensure the reasonable flow of the three molten materials and combine them at the best position. After vacuum shaping, water cooling and drying, the process is completed in one go.

Example 2

As shown in Figure 2, the novel fire-proof and smoke-proof sealing strip described in the embodiment of the present utility model includes a fire-proof core material 3, and the outer surface of the fire-proof core material 3 is wrapped with a hard PVC sealed shell 1 and the shell wraps the fire-proof core The material 3 is completely enclosed inside the shell, and a side soft wing 4 is respectively arranged on both sides of the hard PVC sealed shell 1, each side soft wing 4 is inclined to the two sides of the shell and each side soft wing The strip 4 forms a certain angle with the outer surface of the hard PVC sealed casing 1 .

Example 3

As shown in Figure 3, the novel fire-proof and smoke-proof sealing strip described in the embodiment of the utility model includes a fire-proof core material 3, and the outer surface of the fire-proof core material 3 is wrapped with a hard PVC sealed shell 1 and the shell wraps the fire-proof core The material 3 is completely enclosed inside the shell, and one side of the hard PVC sealed shell 1 is provided with a side soft wing 4, and the other side is provided with two side soft wings 4, and the two sides are located on the same side. The lengths of the side soft wings 4 are not equal;

Correspondingly, each side soft wing strip 4 is inclined to the two sides of the shell and each side soft wing strip 4 forms a certain angle with the outer surface of the hard PVC sealed shell 1 .

Example 4

As shown in Figure 4, the novel fire-proof and smoke-proof sealing strip described in the embodiment of the present utility model includes a fire-proof core material 3, and the outer surface of the fire-proof core material 3 is wrapped with a hard PVC sealing shell 1 and the shell wraps the fire-proof core The material 3 is completely enclosed inside the housing, and a single piece of soft wing strip 5 is arranged on one side of the exterior of the hard PVC sealed housing 1 .

The above description of the embodiments is for those of ordinary skill in the technical field to be able to understand and apply the technology of this case. Those skilled in the art can easily make various modifications to these examples, and apply the general principles described here to other embodiments without creative effort. Therefore, this case is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of this case should be within the scope of protection of this case.

Claims (5)

1. a Novel fireproof Smoke prevention weather strip, comprises fire prevention core (3), it is characterized in that:

Described fire prevention core (3) external surface wraps up one deck hard PVC can (1), and and this shell will be prevented fires, core (3) is closed in enclosure interior, described hard PVC can (1) middle part arranges soft wing bar (2) in the middle of one or two and with certain interval between two soft wing bars, the soft wing bar (2) in each centre is tilted to shell both sides;

Correspondingly, described hard PVC can 1 both sides external sets up the soft wing bar (4) of one or two side respectively.

2. Novel fireproof Smoke prevention weather strip according to claim 1, is characterized in that: described soft wing bar is made up of PVC and NBR material.

3. Novel fireproof Smoke prevention weather strip according to claim 1, is characterized in that: the soft wing bar (2) in each centre and hard PVC can (1) external surface shape have a certain degree.

4. Novel fireproof Smoke prevention weather strip according to claim 1, is characterized in that: described hard PVC can (1) outside wherein side arranges a soft wing bar (5) of monolithic.

5. Novel fireproof Smoke prevention weather strip according to claim 1, is characterized in that: described hard PVC can (1) outer setting layers of two-sided.