CN1309552C - Method for making foamed material with three-dimensional relief by using thermoplastic elastomer - Google Patents

Abstract

A method for making a foam material with three-dimensional convex patterns using a thermoplastic elastomer comprises the following steps: making a foam material sheet using a thermoplastic elastomer granule, heating the foam material sheet by a heating device to soften the foam material sheet to a plasticized degree, attaching and fixing a high-temperature resistant mesh cloth on the surface of the foam material sheet, applying pressure to the foam material sheet by a mold having a uniform surface and a plurality of small grooves, so that a part of the plasticized foam material sheet that bears a greater pressure moves to a part that bears a lesser pressure, and under the influence of the high-temperature resistant mesh cloth, the part passes through the mesh holes of the high-temperature resistant mesh cloth to form three-dimensional convex patterns on the upper surface of the foam material sheet, and then peeling off the mesh cloth to form a three-dimensional pattern or design on the surface of the foam material sheet according to the mesh cloth pattern or design.

Description

Method for making foamed material with three-dimensional relief by using thermoplastic elastomer

technical field

The invention relates to a manufacturing method of a foaming material, in particular to a method for making a foaming material with three-dimensional embossed lines by utilizing a thermoplastic elastomer.

Background technique

As we all know, because rubber foam material has good elasticity and damping properties, it is often processed into floors, mats or other pads, which are widely used in daily life to absorb vibration, sound insulation or anti-slip. However, since the foamed material sheet made of rubber foamed material has weak material strength, it cannot withstand large shear stress, so the foamed material sheet is generally made into a square or rectangular sheet. In order to prevent the rolled foam material sheet from breaking due to pulling during the rolling and handling process.

In addition, because the surface of the foamed material sheet is generally made into a flat shape, it cannot show its anti-slip effect. Therefore, some manufacturers specialize in making square or rectangular foamed material sheets to solve this problem. After the body, the mold is used to form many three-dimensional reliefs on the surface of the foam material sheet by hot pressing to increase the friction on the surface of the foam material sheet. However, this method greatly increases the production process. , man-hours and cost, but still can not solve the problem of continuous production of foam material sheet and insufficient strength of itself, therefore, limit the range of use of foam material sheet.

In order to solve the problem that the foam material sheet cannot be mass-produced and the strength is insufficient, some processing manufacturers of the foam material sheet, especially when making the foam material sheet, paste and fix a A layer of mesh cloth is used to effectively improve the strength of the foam material sheet, but in this way, because the layer of mesh cloth separates the area of direct contact between the foam material sheet and other objects, the foam material sheet can The damping characteristics and anti-slip effects provided are greatly reduced, and its proper characteristics are lost.

Contents of the invention

The object of the present invention is to provide a method for making a foamed material with three-dimensional embossing by utilizing a thermoplastic elastomer, by cutting the foamed material completed by foaming a thermoplastic elastomer particle according to the required thickness. The sheet body is heated by a heating device to soften the foam material sheet to the degree of plasticization, and a high-temperature-resistant mesh cloth is attached and fixed on the surface of the foam material sheet. The mold with many small grooves exerts pressure on it, so that the part of the plasticized material sheet that bears greater pressure moves to the part that bears less pressure. Through the mesh holes of the high-temperature-resistant mesh, three-dimensional reliefs are formed on the surface of the foam material sheet, so as to achieve the purpose of making a non-slip foaming material with a strong structure and three-dimensional reliefs.

Another object of the present invention is to provide a method for making a foamed material with three-dimensional embossed patterns using a thermoplastic elastomer. Or patterns for the purpose of forming three-dimensional patterns or patterns.

Another object of the present invention is to provide a method for making foamed material with three-dimensional embossments by using thermoplastic elastomer, by introducing frozen water into the mold in a circulating manner to form a low-temperature state on the surface of the mold, so that it can When the foam material sheet is pressed to form three-dimensional embossing, the foam material sheet can be cooled immediately, so that the three-dimensional embossing can be quickly shaped, and the anti-slip foaming material with three-dimensional embossing can be quickly produced. Purpose.

The object of the present invention is achieved like this: a kind of method that utilizes thermoplastic elastomer to make the foaming material that has three-dimensional embossment, it is characterized in that: this method comprises the steps:

(1) Utilize a kind of thermoplastic elastomer colloid to produce a foam material sheet;

(2) using a heating device to heat the foamed material sheet, so that the foamed material therein is softened to a degree of plasticization;

(3) Paste and fix a high-temperature-resistant mesh cloth with a predetermined mesh size on at least one side surface of the foam material sheet;

(4) Apply pressure to the foamed material sheet with at least one mold, and a mold for applying pressure to the side of the foamed material sheet covered with the high-temperature-resistant mesh cloth has uniform openings on the surface of the foamed material sheet. There are many small grooves, during the process of applying pressure, the part of the foamed material that has been plasticized that bears more pressure moves to the part that bears less pressure, so as to rush through the mesh. The surface of the foam material sheet forms uniform and three-dimensional embossments corresponding to the positions of the mesh holes.

The method of the present invention also includes peeling off the mesh cloth to form a three-dimensional pattern or pattern similar to the mesh cloth pattern or pattern on the surface of the foam material sheet.

The composition of the foam material sheet is in parts by weight: 100 parts of thermoplastic elastomer colloids, 2-6 parts of foaming agent, 0.1-1.0 parts of bridging agent, 5-60 parts of filler agent and 1-10 parts of anti-aging agent. The thermoplastic elastomer particles are styrene-butadiene-styrene block copolymer, styrene-ethylene-butylene-styrene block copolymer, styrene-isoprene-styrene block copolymer or ethylene-vinyl acetate copolymer.

The mesh size of the high temperature resistant mesh cloth needs to be at least 0.5mm. The high temperature resistant mesh cloth needs to be at least above 140 degrees Celsius. The heating device is an infrared heating furnace. When the foaming material sheet passes through it, the foaming material sheet is heated to make it rapidly soften to the degree of plasticization. The depth of the small groove is at least 1.0 mm. The width of the small groove is at least 2.0 mm.

Further description will be given below in conjunction with preferred embodiments and accompanying drawings.

Description of drawings

Fig. 1 is the schematic diagram of the sheet body that foam material of the present invention is cut into a plurality of sheets;

Fig. 2 is a schematic diagram of the operation of heating, plasticizing and attaching the foam material sheet of the present invention;

Fig. 3 is a schematic diagram of the operation of the foamed material sheet of the present invention being press-molded;

Fig. 4 is a schematic partial cross-sectional view of the foamed material sheet of the present invention during pressure molding.

Detailed ways

The invention uses a kind of thermoplastic elastomer colloid to replace the traditional rubber raw material, and utilizes the characteristic that the elastomer colloid is easy to heat and form during the foaming process to produce the non-slip foaming material of the invention.

In the process of the present invention, the thermoplastic elastomer colloids are first put into a fixed mold for foaming operation. After the foaming operation is completed, the foaming material is taken out from the fixed mold and removed. After edge trimming and trimming, a cubic foam material 10 is formed, as shown in FIG. 1 ; and then, the foam material 10 is cut into a plurality of sheets 21 according to the actual required thickness.

Referring to Fig. 2, in the manufacturing process of the present invention, the foamed material sheet 21 can be conveyed to a heating device 60 first, and the high temperature generated by the heating device 60 is used to heat the foamed material sheet 21, so that the foamed material sheet 21 is heated. The foam material 10 is softened to the degree of plasticization, and then a high-temperature-resistant mesh cloth 40 with a predetermined mesh size 41 is attached and fixed on one side surface of the foam material sheet 21, or it can be pasted and fixed according to actual needs. on both sides of the surface.

When the present invention is actually implemented, it is not limited thereto, and the high temperature resistant mesh cloth 40 can also be attached and fixed on one side (or two sides) of the foam material sheet 21 first, and then coated with a high temperature resistant mesh cloth. The foam material sheet 21 of the mesh cloth 40 is sent to the heating device 60 to be heated by the heating device 60 to make it soften to a degree of plasticization.

Referring to shown in Fig. 3, press it with an upper mold 70 and a lower mold 71, and pay special attention to: in the molds 70, 71, the foam material sheet 21 is covered with mesh cloth 40. On the one hand, the upper mold 70 for applying pressure has a plurality of small grooves 80 evenly opened on its surface, so that in the process of applying pressure, the plasticized foam material 10 can be subjected to a relatively high pressure. Part 22 moves to the part 23 (or the part not under pressure, that is, the part corresponding to the groove 80) that bears less pressure, as shown in the direction shown by the arrow in Figure 4, so that the mesh cloth 40 is not affected. The foaming material that entangles will rush through the mesh 41 of the high temperature resistant mesh cloth 40, and on the surface of the foam material sheet 21, according to the mesh 41 pattern of the mesh cloth 40, at the position corresponding to each mesh hole 41 After forming the three-dimensional embossed lines 90 , and immediately cooling the foam material sheet 21 , the foam material 10 can be made into a non-slip foam material with firm structure and three-dimensional embossed lines 90 .

During the actual implementation of the present invention, after the anti-slip foam material is produced, the mesh cloth 40 can be peeled off to form a three-dimensional pattern or pattern such as the pattern or pattern of the mesh cloth 40 on the surface of the foam material sheet 21 .

In a preferred embodiment of the present invention, the composition of foam material 10 comprises 100 parts by weight of thermoplastic elastomer particles, 2-6 parts by weight of foaming agent, and 0.1-1.0 parts by weight of bridging agent, 5-60 parts by weight filler and 1-10 parts by weight anti-aging agent.

Thermoplastic elastomer particles, such as: styrene-butadiene-styrene block copolymer (SBS for short), styrene-ethylene-butylene-styrene block copolymer (SEBS for short), styrene-iso Pentadiene-styrene block copolymer (SIS for short) or ethylene-vinyl acetate copolymer (EVA for short), etc.;

The size of the mesh 41 of the high temperature resistant mesh cloth 40 must be at least 0.5mm, and its high temperature resistance must be at least above 140 degrees Celsius;

The heating device 60 can be an infrared heating furnace, so as to heat the foam material sheet 21 when the foam material sheet 21 passes therethrough, so that the material can be rapidly softened to the degree of plasticization;

The plurality of small grooves 80 provided on the surface of the upper mold 70 have a depth of at least 1.0mm and a width of at least 2.0mm.

In this way, in the process of applying pressure, there is enough space for the part of the foam material 10 corresponding to the small groove 80. Referring to FIG. Move to punch through the mesh holes 41 of the high-temperature-resistant mesh cloth 40 , and form three-dimensional reliefs 90 on the surface of the foam material sheet 21 according to the pattern of the mesh holes 41 of the mesh cloth 40 .

In addition, in the present embodiment, the upper mold 70 and the lower mold 71 are evenly distributed with circulating pipelines, and chilled water is introduced into it for circulation, and the foam material sheet 21 can be pressed on the upper mold 70 and the lower mold 71. , while forming the three-dimensional embossed lines 90, it is cooled to make the embossed lines 90 be shaped quickly, and the non-slip foaming material with firm structure and three-dimensional embossed lines 90 can be produced quickly. When the present invention is actually implemented, it is not limited to this, and other independent cooling devices can also be used. After the upper mold 70 and the lower mold 71 complete the pressure molding of the foam material sheet 21, it is then cooled. .

The above description is only a preferred embodiment of the present invention, and the process of the present invention is not limited thereto. Any changes or modifications that are easily conceived by those familiar with the art in the field of the present invention shall be included in the present invention. within the scope of protection of the invention.

Claims (12)

1, a kind ofly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this method comprises the steps:

(1) utilizes a kind of thermoplastic elastomer micelle, produce an expanded material lamellar body;

(2) utilize a heater that this expanded material lamellar body is heated, the softening degree of order expanded material wherein to plasticization;

(3) a high temperature resistant screen cloth with predetermined mesh size is pasted and fixed at least one side surface of this expanded material lamellar body;

(4) with at least one mould this expanded material lamellar body is exerted pressure, in order to the mould that the one side that is coated with this high temperature resistant screen cloth on this expanded material lamellar body is exerted pressure, evenly offer most little grooves on its surface, in course of exerting pressure, bearing the bigger part of pressure in this expanded material that order has plastified moves to bearing the less part of pressure, breaking through described mesh, form evenly and be the burr of stereo structure corresponding to the position of this mesh respectively on the surface of this expanded material lamellar body.

2, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: further comprising this screen cloth is peeled off, form stereo structure decorative pattern or the pattern that is similar to this screen cloth decorative pattern or pattern with surface at this expanded material lamellar body.

3, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: the composition of this expanded material lamellar body is counted with parts by weight: 100 parts thermoplastic elastomer micelle, the blowing agent of 2-6 part, 0.1-1.0 the bridging agent of part, the age resistor of the filler of 5-60 part and 1-10 part.

4, as claimed in claim 3ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this thermoplastic elastomer micelle is a SBS.

5, as claimed in claim 3ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this thermoplastic elastomer micelle is the styrene-ethylene-butylene-styrene block copolymer.

6, as claimed in claim 3ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this thermoplastic elastomer micelle is a SIS.

7, as claimed in claim 3ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this thermoplastic elastomer micelle is an ethylene-vinyl acetate copolymer.

8, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: the mesh size of this high temperature resistant screen cloth needs more than the 0.5mm at least.

9, as claimed in claim 8ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: the high temperature resistant of this high temperature resistant screen cloth needs at least more than 140 degree Celsius.

10, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: this heater is an infrared furnace, when this expanded material lamellar body passes through wherein, this expanded material lamellar body is heated, make its softening rapidly degree to plasticization.

11, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: the degree of depth of described little groove is at least 1.0mm.

12, as claimed in claim 1ly utilize thermoplastic elastomer to produce to have the method for the expanded material of three-dimensional burr, it is characterized in that: the width of described little groove is at least 2.0mm.

Images