CN101259755A - Method for making car foot mat with waste PVC material - Google Patents

Abstract

The invention discloses a method for manufacturing automobile foot pads from waste PVC materials. The process steps are: weighing the following raw materials in weight percentages: 40% to 50% of waste and old PVC materials after selection and crushing; 10% to 50% of leftover materials. 20%; calcium carbonate 30% ~ 40%; melanin 0.1% ~ 0.2%; granular paraffin 0.2% ~ 0.4%; put the raw materials of the above ratio into the mixer and stir them; put the stirred raw materials into the screw extrusion The extruder is extruded at a temperature of 160-190°C; the extruded material is sent to a mixer for mixing at a temperature of 150-180°C; the mixed material is sent to a calender to be drawn at a temperature of 150-180°C Sheet material; then send the sheet material and the carpet to the two rotating upper and lower pressing rollers, so that one side of the sheet material and the back of the carpet are pressed into shape; cooling and shaping, that is, the finished product. The manufacturing method can make full use of waste resources and greatly reduce the cost of the automobile floor mat.

Description

Method for making car foot mat with waste PVC material

technical field

The invention relates to a method for manufacturing automobile foot pads, in particular to a method for manufacturing automobile foot pads with waste PVC materials.

Background technique

The automobile floor mat of the prior art is generally a composite planar structure, and the surface is a carpet such as a carpet of fiber, polypropylene fiber or nylon material, and the lower floor is plastic, and the plastic usually adopts PVC material, and its manufacturing method is generally direct extrusion molding. The manufacturing method of the above prior art has the defect that the production raw materials must be new materials, because if waste and old PVC materials are used, the miscellaneous materials therein can easily block the extrusion die of the extruder that is directly extruded and formed, making the production impossible. Carry out normally; This just causes on the one hand because of the higher price of new materials such as PVC, makes the cost of the automobile floor mat of prior art relatively high, and on the other hand, a large amount of waste and old PVC materials and the leftover material of manufacturing automobile floor mat are Due to the limitation of the manufacturing method in the prior art, it cannot be used in the production of automobile foot pads, resulting in waste of resources and environmental pollution.

Contents of the invention

The technical problem to be solved by the present invention is to provide a method for manufacturing automobile floor mats from waste PVC materials which can make full use of waste resources and greatly reduce the cost of automobile floor mats.

The technical solution of the present invention is to provide a kind of method that uses waste and old PVC material to manufacture automobile pedal mat, and its process step is:

a. Weigh the following raw materials in weight percentage

40% to 50% of waste PVC materials after selection and crushing;

10% to 20% of the leftovers left over from the previous manufacture of car floor mats;

Calcium carbonate 30% to 40%;

Melanin 0.1%～0.2%;

Granular paraffin 0.2%～0.4%;

B, put the raw material of step a into the blender and stir evenly;

c. Put the stirred raw materials into a screw extruder and extrude at a temperature of 160-190°C;

d. Send the extruded material to a mixer for mixing at a temperature of 150-180°C;

e. Send the kneaded material to a calender and pull it down at a temperature of 150-180°C to form a sheet;

f. Then send the sheet material and the carpet to the two rotating upper and lower pressure rollers, so that one side of the sheet material and the back of the carpet are pressed into shape;

g. After cooling and setting, it is the finished product.

The raw material that weighs preferably following percentage by weight

The selected and crushed waste PVC materials are 46% to 48%;

14% to 16% of the leftovers left over from the previous manufacture of car floor mats;

Calcium carbonate 37%～39%;

Melanin 0.1%～0.2%;

Granular paraffin 0.2% to 0.4%.

The leftover left over from the manufacture of the automobile foot pad in the past preferably adopts the leftover left over from the manufacture of the automobile foot pad by the formula in the above-mentioned step a.

Described calcium carbonate preferably adopts the calcium carbonate that powder particle diameter is 200 orders (powder particle diameter is 74um).

After adopting the above structure, compared with the prior art, the present invention has the following significant advantages and beneficial effects:

Adopt manufacturing method of the present invention, owing to be not direct extrusion molding (step d and step e replaced the step of former direct extrusion molding), there is no extruding die head of the extruder of direct extrusion molding, so avoided waste and old PVC material The phenomenon that the miscellaneous materials in the mold block the extrusion die head of the direct extrusion molding extruder and make the production cannot be carried out normally, overcomes the defect that the production raw materials of the above-mentioned prior art manufacturing method must be new materials, and a large amount of The waste PVC material is used in the production of car floor mats, and the scraps left by the previous manufacturing of car floor mats that were originally thrown away are also completely recycled. Even if the raw material resources are regenerated, raw material resources are saved and greatly reduced. It reduces the production cost of automobile floor mats (generally, the cost of PVC raw materials used in automobile floor mats can be reduced by about 4,000 yuan per ton), reduces the pollution of waste to the environment, and improves the environment.

Detailed ways

The present invention will be further described below in conjunction with embodiment, but the present invention is not limited only to following embodiment:

Example 1

The present invention uses waste and old PVC material to manufacture the method for automobile pedal mat, and its process step is:

a. Weigh the following raw materials (unit: kg)

Selected and crushed waste PVC materials 40;

The leftovers from the previous manufacture of car floor mats (preferably the leftovers from the last or several previous manufacturing of car floor mats according to the formula in this step) 20;

The powder particle size is 200 mesh calcium carbonate 39.4;

Melanin (used for plastic coloring, directly called this name, available in the market, also known as black powder, the same below) 0.2;

Granular paraffin 0.4.

b. Put the raw materials in step a into an automatic mixer and stir well to mix evenly.

c. Put the evenly stirred raw materials into a screw extruder and heat them to 170-190°C to extrude.

d. Send the extruded material to the mixer through the conveyor belt and mix it at a temperature of 160-180°C (this temperature generally refers to the temperature that the surface of the material is exposed to);

e. Send the mixed material to the calender through the conveyor belt and pull it down into a sheet at a temperature of 160-180°C (this temperature generally refers to the temperature that the material surface is exposed to);

f. Then (i.e. make full use of the waste heat of the flake material) send the flake material and the carpet to the two rotating upper and lower pressure rollers, so that one side of the flake material and the back of the carpet are pressed into shape, that is, the back of the carpet is facing upwards and placed On the feeding mechanism, extend one end of the carpet and one end of the sheet material into the upper and lower pressure rollers at the same time, start the transmission device, the upper and lower pressure rollers rotate relatively, the sheet material and the carpet are rolled into the upper and lower pressure rollers and squeezed by the upper and lower pressure rollers forming;

g. Cooling and setting (such as air cooling), that is, the finished car floor mat.

Example 2

The present invention uses waste and old PVC material to manufacture the method for automobile pedal mat, and its process step is:

a. Weigh the following raw materials (unit: kg)

Selected and crushed waste PVC materials 46;

The leftovers from the previous manufacturing of car floor mats (preferably the leftovers from the last or several previous manufacturing of car floor mats according to the formula in this step) 16;

The powder particle size is 200 mesh calcium carbonate 37.7;

Melanin 0.1;

Granular paraffin 0.2;

All the other steps are the same as in Example 1.

Example 3

The present invention uses waste and old PVC material to manufacture the method for automobile pedal mat, and its process step is:

a. Weigh the following raw materials (unit: kg)

Selected and crushed waste PVC materials 46.7;

The scrap left over from making the car foot pad before (preferably the last time or last several times to make the car according to the formula in this step

Leftovers from foot pads) 15;

The powder particle size is 200 mesh calcium carbonate 38;

Melanin 0.1;

Granular paraffin 0.2;

All the other steps are the same as in Example 1.

Claims (4)

1, a kind of method with waste and old PVC material manufactures automobile floor mat, its process step is: a. Weigh the following raw materials in weight percentage 40% to 50% of waste PVC materials after selection and crushing; 10% to 20% of the leftovers left over from the previous manufacture of car floor mats; Calcium carbonate 30% to 40%; Melanin 0.1%～0.2%; Granular paraffin 0.2%～0.4%; B, put the raw material of step a into the blender and stir evenly; c. Put the stirred raw materials into a screw extruder and extrude at a temperature of 160-190°C; d. Send the extruded material to a mixer for mixing at a temperature of 150-180°C; e. Send the kneaded material to a calender and pull it down at a temperature of 150-180°C to form a sheet; f. Then send the sheet material and the carpet to the two rotating upper and lower pressure rollers, so that one side of the sheet material and the back of the carpet are pressed into shape; g. After cooling and setting, it is the finished product. 2. The method for manufacturing car floor mats from waste PVC materials according to claim 1, characterized in that: the raw materials in the following weight percentages are weighed The selected and crushed waste PVC materials are 46% to 48%; 14% to 16% of the leftovers left over from the previous manufacture of car floor mats; Calcium carbonate 37%～39%; Melanin 0.1%～0.2%; Granular paraffin 0.2% to 0.4%. 3. The method for manufacturing car floor mats from waste PVC materials according to claim 1, characterized in that: the scraps left in the previous manufacturing of car floor mats refer to the formula in step a of claim 1 Leftovers from the manufacture of car floor mats. 4. The method for manufacturing car floor mats with waste PVC materials according to claim 1, characterized in that: said calcium carbonate refers to calcium carbonate with a powder particle size of 200 mesh.