CN204552553U - A kind of angie type is every cigarette sound insulating seal bar - Google Patents

Abstract

The utility model relates to an angle-type smoke-proof and sound-proof sealing strip, which comprises a hard PVC sealing base strip. Arc sealing section or transition section, the angle formed between the transition section and each base strip is 135°, and a flame-retardant soft wing strip modified by nitrile rubber to PVC is arranged at the outer end of each section of base strip ; At the same time, a layer of double-sided adhesive layer is set on the back of each section of the base strip. The beneficial effects of the utility model are: the structure can be completed by an automatic line, the quality is better, the structure is more reliable, the application range is wider, it is beneficial to realize the mechanization of product application, automatic production, stable product quality, and greatly reduce labor costs , Bringing better market prospects and economic benefits to enterprises.

Description

An angle type smoke and sound insulation sealing strip

technical field

The utility model relates to the production technology of a fire-proof, smoke-proof and sound-proof sealing strip, in particular to an angle-type smoke-proof and sound-proof sealing strip produced by a new processing method.

Background technique

With the development of the sealing industry and the improvement of the requirements for fireproof doors and windows, fireproof, smokeproof and soundproof sealing strips play an increasingly important role in fireproof doors and windows, such as fireproof sealing, smokeproof, sound insulation, dustproof, heat preservation and energy saving. The general sealing strip is formed by extrusion of PVC, modified PVC, EPDM, elastomer sealing strip (TPV, TPE, TPR), silica gel and other materials. However, the above-mentioned materials cannot play a role in fireproof doors and windows, and even in the event of a fire, they cannot achieve the fireproof effect of isolating smoke and expanding and sealing gaps. Instead, they will increase the intensity of the fire and release dense smoke and toxic gases, causing secondary disasters. It is restricted in the use of fire doors and windows.

The production process of the existing fireproof sealing strip is complicated, and the size and matching requirements of the parts are high, which leads to high manufacturing cost, unstable quality, complicated installation, and even limitations in the application of the fireproof sealing strip used in some occasions. The reason is due to the traditional processing method. Generally speaking, the sealing strip is made of soft film or foam ring, and then manually assembled into the T-shaped or U-shaped groove of the door frame, which only plays the role of one-sided sealing.

Many sealing strips with traditional structures, for example, a kind of sealing strip disclosed by the Chinese patent whose authorized announcement number is CN201225075Y and patent number is 200820071429. , the top of the flame retardant layer and the two sides of the flame retardant layer are covered with a flame retardant decorative layer, 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 The structure can use the co-extrusion process to produce a continuous length of fire 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 No. 200420061216.0 discloses a sealing strip that is mainly used for fire doors, fire windows, fire shutters, fire dampers, and fire glass partitions, and can also be used in vehicles and ships. 1. On the aircraft, the sealing strip is composed of two parts: the base strip and the sealing strip. The sealing strip and the base strip are made of the same intumescent fireproof material and connected as a whole; It is also convenient to make it as a whole with the same material as the base strip, so that the sealing strip and the base strip have the same fireproof and flame retardant effects. 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, through the analysis of the above technologies and the experience accumulated in production, innovation is carried out, and a new co-extrusion process is used to make the hard bottom plate and soft wing of the fireproof, smokeproof and soundproof sealing strip, using molds and two extrusion lines. , complete the assembly, gluing, cutting, packaging and other work at one time, and the production line produces finished products from the beginning to the end; it should be pointed out that the key to implementing the technology of this case lies in the structural design of the product, because the traditional method can only make the product in the normal position of the door and window The pressure side or the side surface produces a sealing on one surface, so the effect of smoke and sound insulation is not good, and this scheme has both front and side surfaces sealed at the same time, so the effect of smoke and sound insulation is greatly improved; in addition, due to the conception of the new structure, It can produce new shapes and structures (such as three soft wing seals, etc.) that cannot be implemented by traditional methods, while traditional methods can only produce single-sided films or bubble rings. 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 an angle-type smoke and sound insulation sealing strip which is beneficial to the mechanization and automatic production of products, stable product quality, and can reduce labor costs, so as to solve many shortcomings of the prior art.

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

An angle-type smoke and sound insulation sealing strip, including a rigid PVC sealing base strip, the rigid PVC sealing base strip is composed of two mutually perpendicular base strips, and an arc sealing section is arranged at the junction of the two sections of base strips Or a transition section, the angle formed between the transition section and each base strip is 135°, and a flame-retardant soft wing strip modified by nitrile rubber to PVC is arranged at the outer end of each section of the base strip; at the same time, A layer of double-sided adhesive layer is provided on the back of each section of base strip;

A soft wing II is added in the middle of one of the base strips.

Correspondingly, the flame-retardant soft wings modified by the nitrile rubber to PVC are made of PVC and NBR materials; the two nitrile rubbers have good elasticity to the flame-retardant soft wings modified by PVC and are in the natural state aligned on the same straight line.

The beneficial effects of the angle-type smoke and sound insulation sealing strip described in the utility model are as follows: the single structure of the traditional product is improved, and the hard PVC sealing base strip is composed of two mutually perpendicular base strips and connected at the two sections of base strips. Set a section of circular arc sealing section or transition section, and set a flame-retardant soft wing strip modified by nitrile rubber to PVC at the outer end of each section of the base strip, so that the structure can be completed through an automatic line, with better quality and more structured structure. It is reliable and has a wider application range, which is conducive to the realization of product mechanization, automatic production, stable product quality, and greatly reduces labor costs, bringing better market prospects and economic benefits to enterprises.

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 angle-type smoke and sound insulation sealing strip described in Embodiment 1 of the utility model;

Fig. 2 is a structural schematic diagram of the angle-type smoke and sound insulation sealing strip described in the second embodiment of the utility model;

Fig. 3 is a structural schematic diagram of the corner-type smoke and sound insulation sealing strip described in the third embodiment of the utility model.

In the picture:

1. Rigid PVC sealing base strip; 2. Flame retardant soft wing strip modified by nitrile rubber on PVC; 3. Double-sided adhesive layer; 4. Transition section; 5. Angle; 6. Soft wing II.

Detailed ways

Example 1

As shown in Figure 1, the angle-type smoke and sound insulation sealing strip described in the embodiment of the utility model includes a hard PVC sealing base strip 1, and the hard PVC sealing base strip 1 is composed of two mutually perpendicular base strips and A circular arc sealing section is arranged at the junction of the two sections of sealing strips, and a flame-retardant soft wing strip 2 made of PVC and NBR material modified by nitrile rubber to PVC is arranged at the outer end of each section of the vertical base strip; at the same time, A layer of double-sided adhesive layer 3 is arranged on the back of each section of the base strip, and the two nitrile rubbers have good elasticity to the PVC-modified flame-retardant soft wing strip 2 and are aligned on the same straight line in a natural state. 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 angle-type smoke and sound insulation sealing strip described in the embodiment of the utility model includes a hard PVC sealing base strip 1, and the hard PVC sealing base strip 1 is composed of two mutually perpendicular base strips and a The transition section 4 is formed and the transition section 4 is arranged at the junction of two sections of the base strips, and the angle 5 formed between the transition section 4 and each base strip is 135°;

Correspondingly, a flame-retardant soft wing strip 2 made of PVC and NBR material modified by nitrile rubber to PVC is arranged on the outer end of each section of the base strip; at the same time, a layer of double-sided adhesive layer is provided on the back of each section of the base strip 3. The two nitrile rubber-to-PVC modified flame-retardant soft wing strips 2 have good elasticity and are aligned on the same straight line in the natural state.

Example 3

As shown in Figure 3, the angle-type smoke and sound insulation sealing strip described in the embodiment of the utility model includes a hard PVC sealing base strip 1, and the hard PVC sealing base strip 1 is composed of two mutually perpendicular base strips and a The transition section 4 is formed and the transition section 4 is arranged at the junction of two sections of the base strips, and the angle 5 formed between the transition section 4 and each base strip is 135°;

Correspondingly, a flame-retardant soft wing strip 2 made of PVC and NBR material modified by PVC is provided at the outer end of one of the base strips, and a PVC-made soft wing strip 2 is added in the middle and outer end of the other base strip in turn. Flame-retardant soft wing strips 2 and soft wing II 6 modified with nitrile rubber made of NBR material to PVC; at the same time, a layer of double-sided adhesive layer 3 is arranged on the back of each base strip, and two nitrile rubbers are modified to PVC. The flame-retardant soft wing strip 2 has good elasticity and in the natural state, the flame-retardant soft wing strip 2 modified by the nitrile rubber in the middle of one base strip and the PVC modified by the nitrile rubber at the outer end of the other base strip The permanent flame-retardant soft wings 2 are aligned on the same straight line.

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 (3)

1. An angle-type smoke and sound insulation sealing strip, including a rigid PVC sealing base strip (1), characterized in that: The rigid PVC sealing base strip (1) is composed of two mutually perpendicular base strips and a circular arc sealing section or transition section (4) is arranged at the junction of the two sections of base strips, and the transition section (4) and The angle (5) formed between each base strip is 135°, and a flame-retardant soft wing strip (2) modified by nitrile rubber to PVC is arranged at the outer end of each base strip; at the same time, each section of base strip A double-sided adhesive layer (3) is provided on the back of the strip; A soft wing II (6) is set up in the middle of one of the base bars. 2. The corner-type smoke and sound insulation sealing strip according to claim 1, characterized in that: the flame-retardant soft wing strip (2) modified by nitrile rubber to PVC is made of PVC and NBR materials. 3. The corner-type smoke and sound insulation sealing strip according to claim 1, characterized in that: the two nitrile rubber modified PVC flame-retardant soft wing strips (2) have good elasticity and are aligned in the natural state on the same straight line.