阅读说明：本技术 一种彩色橡胶楼梯踏板的制备方法及橡胶楼梯踏板 (Preparation method of colored rubber stair tread and rubber stair tread ) 是由 张增科 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种彩色橡胶楼梯踏板的制备方法及橡胶楼梯踏板。所述方法包括：在彩色橡胶楼梯踏板的下模具设置锯齿纹路；依据警戒线胶片的设计宽度,在锯齿纹路两侧设置挡边,两个挡边形成的齿形模腔的宽度与警戒线胶片的宽度相当；警戒线胶片放入挡边形成的齿形模腔内；主胶片覆盖在警戒线胶片之上,合模硫化一次成型。本发明设计了特殊的模具结构,解决了现有的问题,从而制作出的橡胶楼梯踏板的质量能满足市场需求,使用寿命长,外表美观。(The invention discloses a preparation method of a colored rubber stair tread and the rubber stair tread. The method comprises the following steps: setting sawtooth lines on a lower die of a colorful rubber stair tread; according to the design width of the warning line film, flanges are arranged on two sides of the sawtooth lines, and the width of a tooth-shaped die cavity formed by the two flanges is equivalent to the width of the warning line film; the warning line film is placed into a tooth-shaped die cavity formed by the flanges; the main film covers the warning line film, and the main film is molded in one step by die assembly and vulcanization. The invention designs a special die structure and solves the existing problems, so that the quality of the manufactured rubber stair tread can meet the market demand, the service life is long, and the appearance is attractive.)

1. A preparation method of a colored rubber stair tread is characterized by comprising the following steps:

setting sawtooth lines on a lower die of a colorful rubber stair tread; according to the design width of the warning line film, flanges are arranged on two sides of the sawtooth lines, and the width of a tooth-shaped die cavity formed by the two flanges is equivalent to the width of the warning line film;

the warning line film is placed into a tooth-shaped die cavity formed by the flanges; the main film covers the warning line film, and the main film is molded in one step by die assembly and vulcanization.

2. The method of claim 1, wherein:

the depth of the sawtooth lines is 0.8mm-1.2mm, the tooth space is 1.8mm-2.2mm, and the tooth crest angle is 90 degrees.

3. The method of claim 1, wherein:

the flanges are flanges with semicircular sections.

4. The method of claim 3, wherein:

the height of the flange is 1.7mm-1.8 mm; the width of the flange is 2mm-3 mm.

5. The method of claim 1, wherein:

the vulcanization temperature is 150-170 ℃;

the vulcanization time is 9-15 min.

6. The method of claim 5, wherein:

the vulcanization temperature is 153-163 ℃.

7. The method of claim 5, wherein:

the color of the warning line film is different from that of the main film.

8. The method of claim 5, wherein:

the color of the warning line film is bright and striking, and is preferably yellow or red.

9. A colored rubber stair tread obtained by the method according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of rubber floors, in particular to a preparation method of a colored rubber stair tread and the rubber stair tread.

Background

Rubber floor with good anti-skid performance and comfortable foot feeling is made of rubber, and is widely applied and produced at home and abroad, and the production technical method is mature day by day; meanwhile, many enterprises and technicians also research and trial-produce colored rubber stair treads by utilizing the anti-skid property of rubber; at present, the rubber stair treads with different specifications and surface shapes can be seen in the market, the surface colors of the rubber stair treads can be manufactured by color matching, the stair treads which are the same as the rubber floors can be produced, and due to the successful application of the rubber stair treads with excellent anti-skid performance, the problem of surface anti-skid of a plurality of granite stairs, steel plate stairs and ceramic tile stairs is solved, and the safety of pedestrians walking up and down the stairs is ensured.

However, in the production process of the existing method, the produced product has the defects that: namely, the convex edge of the anti-slip strip at the external corner of the pedal is not provided with warning lines (such as yellow warning lines) with other colors, so that people cannot be reminded of stepping empty due to the fact that steps cannot be clearly distinguished when going upstairs and downstairs.

Later, some famous foreign enterprises adopt a cold bonding method, a groove is reserved at the anti-skid position of an external corner after the tread is vulcanized and formed, and then a vulcanized and cut yellow rubber strip is bonded into the groove by using a universal adhesive, so that the problem that the stair tread does not have a heterochromatic warning line is solved, but the following two defects exist: firstly, the joint of the cold-bonded heterochromatic adhesive tape and the pedal has obvious edge joint marks, which affects the beautiful effect of the appearance; secondly, the firmness of cold bonding is lower than the strength of combined vulcanization, and the heterochromatic adhesive tape is easy to fall off after treading and rubbing by upper and lower footsteps in use.

Disclosure of Invention

In order to solve the problems in the prior art, the invention designs a preparation method of a colored rubber stair tread and the rubber stair tread. The invention designs a special die structure, finds a new production method and solves the existing problems, thereby manufacturing a product which has the advantages of meeting the market demand on product quality, long service life, beautiful appearance and fully meeting the satisfaction of customers.

The invention aims to provide a preparation method of a colored rubber stair tread.

The method comprises the following steps:

setting sawtooth lines on a lower die of a colorful rubber stair tread; according to the design width of the warning line film, flanges are arranged on two sides of the sawtooth lines, and the width of a tooth-shaped die cavity formed by the two flanges is equivalent to the width of the warning line film;

the warning line film is placed into a tooth-shaped die cavity formed by the flanges; the main film covers the warning line film, and the main film is molded in one step by die assembly and vulcanization.

In a preferred embodiment of the present invention,

the depth of the sawtooth lines is 0.8mm-1.2mm, the tooth space is 1.8mm-2.2mm, and the tooth crest angle is 90 degrees.

In a preferred embodiment of the present invention,

the flanges are flanges with semicircular sections.

The rib is arranged in the mold, so that the color of the warning line can flow in a set interval in the vulcanization process, and the boundary between the warning line film and the main film is clear and straight; the phenomenon that the colors of two sizing materials are mutually staggered and the connected parts are uneven is avoided. The cross section of the flange is not limited, and the flange can be semicircular, arc-shaped, rectangular and the like, so long as the function of 'clear boundary between the warning line film and the main film in the vulcanization process' can be achieved. In the present invention, a rib having a semicircular sectional shape may be preferable.

In a preferred embodiment of the present invention,

the height of the flange is 1.7mm-1.8 mm; the width of the flange is 2mm-3 mm.

In a preferred embodiment of the present invention,

the vulcanization temperature is 150-170 ℃; preferably 153 ℃ to 163 ℃;

the vulcanization time is 9-15 min.

In a preferred embodiment of the present invention,

the color of the warning line film is different from that of the main film.

In a preferred embodiment of the present invention,

the color of the warning line film is bright and striking, and is preferably yellow or red.

Another object of the invention is to provide a colored rubber stair tread obtained by the method.

The invention can adopt the following technical scheme:

1. preparing a film:

(1) in thatAnd extruding the adhesive tape with the thickness of 4-5 mm and the width of 300 mm by using an extruder, cooling and cutting into 3065 mm-290 mm-4 mm-5 mm rectangular adhesive films.

(2) In thatThe extruder extruded a strip of 1.5 mm in thickness and 50 mm in width, cooled and cut into 3065002466 mm by 15mm by 1.5 mm rectangular sheets.

2. And (3) designing surface grains of the vulcanizing mold: transverse zigzag lines

The middle of the saw tooth line is provided with a saw tooth line with the depth of 1mm, and two sides of the saw tooth line are provided with semi-circular arc-shaped flanges with the height of 1.75 mm.

By the surface design of the model, when the heterochromatic sizing material is pressed to flow in the die cavity during die assembly, the heterochromatic sizing material can be guided by the sawtooth lines and blocked by the semi-circular arc edges to flow transversely in the groove with the width of 15mm, so that the edge of the warning line is ensured to be straight, and the phenomena that the two sizing materials are staggered in color and the connected parts are uneven are avoided.

3. Product die-filling vulcanization

The die filling is divided into two steps: firstly, putting a rectangular film with a warning line into a tooth-shaped die cavity with the width of 15 mm; and secondly, putting the main rubber sheet, and closing the die and vulcanizing.

The invention has the following effects:

1. through special mould structural design and semi-manufactured goods film preparation, let the stair tread that contains the warning line vulcanize out once, the limit portion of warning line has overcome the sizing material diffusion situation moreover, and two kinds of colours link up the straight smooth, and the impression that is the same with cutting.

2. The working time consumption is reduced, the production process is simplified, the product quality is improved, the service life is prolonged, and the product cost is saved.

Drawings

FIG. 1 is a schematic view of a mold of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a top view of the lower mold;

FIG. 4 is a schematic view of the mold filling;

FIG. 5 is a colored rubber stair tread obtained in example 1;

the warning line is yellow, the main film is gray, the boundary of the warning line is clear and straight, and after co-vulcanization, the warning line film and the main film are of an integrated structure and cannot fall off in the using process.

Description of reference numerals:

1, an upper die; 2, lower die; 3, molding a die cavity; 4, sawtooth lines; 5, blocking edges; 6 warning line films;

7 main film.

Detailed Description

While the present invention will be described in detail and with reference to the specific embodiments thereof, it should be understood that the following detailed description is only for illustrative purposes and is not intended to limit the scope of the present invention, as those skilled in the art will appreciate numerous insubstantial modifications and variations therefrom.

The starting materials used in the examples are all commercially available.

Example 1

Designing a mold: as shown in fig. 1-3.

The lower die of the colorful rubber stair tread is provided with sawtooth lines; according to the design width of the warning line film, flanges are arranged on two sides of the sawtooth lines, and the width of a tooth-shaped die cavity formed by the two flanges is equivalent to the width of the warning line film; the width is 15mm.

The depth of the sawtooth lines is 1mm, the tooth space is 2mm, and the tooth crest angle is 90 degrees.

The flanges are flanges with semicircular sections; the height of the flange is 1.75 mm; the width of the flange is 2.5 mm.

The warning line film (yellow) is put into a tooth-shaped die cavity formed by the flanges; the main film (gray) is covered on the warning line film, and the die is closed and vulcanized for one-time forming.

The preparation method comprises the following specific steps:

1. preparing a film:

(1) in thatAnd extruding the adhesive tape with the thickness of 4-5 mm and the width of 300 mm by using an extruder, cooling and cutting into 3065 mm-290 mm-4 mm-5 mm rectangular adhesive films.

(2) In thatThe extruder extruded a strip of 1.5 mm in thickness and 50 mm in width, cooled and cut into 3065002466 mm by 15mm by 1.5 mm rectangular sheets.

2. Product die-filling vulcanization

As shown in figure 4 of the drawings,

the die filling is divided into two steps: firstly, putting a rectangular film with a warning line into a tooth-shaped die cavity with the width of 15 mm; and secondly, putting the main rubber sheet, and closing the die and vulcanizing. The vulcanization temperature is 153 ℃; the vulcanization time was 10 min.

The prepared rubber stair tread warning line is yellow, the main rubber sheet is gray, the boundary of the warning line is clear and straight, and after co-vulcanization, the warning line rubber sheet and the main rubber sheet are of an integrated structure and cannot fall off in the using process.

Example 2

The mold design was the same as example 1;

the preparation process is the same as example 1;

the difference lies in that: the vulcanization temperature is 150 ℃; the vulcanization time is 12 min;

the prepared rubber stair tread warning line is yellow, the main rubber sheet is green, the boundary of the warning line is clear and straight, and after co-vulcanization, the warning line rubber sheet and the main rubber sheet are of an integrated structure and cannot fall off in the using process.

Example 3

The mold design was the same as example 1;

the preparation process is the same as example 1;

the difference lies in that: the vulcanization temperature is 170 ℃; the vulcanization time is 9 min;

the manufactured rubber stair tread warning line is green, the main rubber sheet is gray, the boundary of the warning line is clear and straight, and after co-vulcanization, the warning line rubber sheet and the main rubber sheet are of an integrated structure and cannot fall off in the using process.