CN1093646A

CN1093646A - Preparation has the method for intermittent multicoloured foaming product

Info

Publication number: CN1093646A
Application number: CN 93103839
Authority: CN
Inventors: 方文山
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-15
Filing date: 1993-04-15
Publication date: 1994-10-19

Abstract

The present invention relates to the method that a kind of preparation has intermittent multicoloured foaming product, mainly utilize the carrier of colorant to have the characteristics higher than the softening point of foaming body body, the flowability of colorant is poor than foaming body when mixing, form inhomogeneous shape and distribute, make goods have intermittent multicolour characteristic; This method comprises: prefabricated colorant, the direct slice of colorant or colorant add that the mixing slice of pigment carrier, foaming body body are made, the body and colorant slice mixing afterwards slice of foaming body after mixing, or foaming body after mixing body and the mixing slice of colorant slice of pulverizing, place steps such as pressure platform foaming.

Description

Preparation has the method for intermittent multicoloured foaming product

The present invention relates to the method that a kind of preparation has the foaming product of intermittent color, relate in particular to a kind of ethylene-vinyl acetate copolymer (EVA) product that is applicable to, manufacturing cost can be reduced, and the method for the rubber plastic foaming product that is rich in multicolour or how intermittent COLOR COMPOSITION THROUGH DISTRIBUTION and shape can be produced.

The foaming product classification of rubber plastic is a lot, EVA foaming product for example, polyurethanes (PU) foaming product, polyethylene (PE) foaming product and polystyrene (PS) foaming product etc., and its industrial application suitable extensively; For aesthetic property and the viewability that increases foaming product, usually after goods are finished, to carry out artificially coloring again and handle traditionally, its method mainly makes product surface tool multicolour and improves value of the product in the mode of spraying paint; Yet the mode of manually spraying paint in the processing of reality with use, have many shortcomings really, as foaming product for EVA, therefore plant spray paint and the EVA foaming body between tack bad, following shortcoming often appears:

(1) with the made goods with dotted colour that cause of artificial method for paint spraying, the skin of paint on surface comes off and can't be durable easily, the very fast chromatic beauty perception of just having lost goods.

(2) the spray paint dotted colour of product surface, mainly manually to spray paint, the utmost point is not easy to control the amount of spraying paint of whole pigment, often cause extremely many pigment losses, the use amount of pigment is bigger, and adopt suitable labor intensive of artificial method for paint spraying and time, do not meet very much the economic requirement of modern production.

(3),,, do not meet the multi-functional needs that require attractive in appearance, practical so the variation of its color is few because of easily causing the overlapping phenomenon of color with the made goods that manually spray paint with dotted colour.

Main purpose of the present invention provides the method that a kind of preparation has intermittent multicoloured foaming product, especially refer to the EVA foaming product, use the above-mentioned shortcoming that produce to go up exists of commonly using of effective solution, thereby simplify and lower-cost manufacturing and reaching the painted purpose of rubber plastic by step.

Another object of the present invention promptly can be carried out multicoloured painted to foaming body by manufacture method of the present invention, and can control intermittent COLOR COMPOSITION THROUGH DISTRIBUTION, color shape and the size that distributes easily.

The method that preparation of the present invention has intermittent multicoloured foaming product is that pigment is added in the expanded material body, and foaming.

In the described method for making, the softening point of pigment carrier is than the height of expanded material body, can use a kind of colorant when mixing or use the coloring material for mixing of two kinds and two or more colors, causes the uneven distribution shape, and obtains having intermittent multicoloured foaming product.

Described expanded material body is ethene one vinyl acetate co-polymer (EVA), polyurethanes (PU), polyethylene (PE) or polystyrene (PS) etc.

Described pigment carrier is the PE material, and expanded material is originally as EVA.

Manufacture method of the present invention comprises the following step:

(1) prefabricated PE colorant: required pigment is added in the PE particles, fully mixing evenly, and be made into PE particle colorant by granulation;

(2) PE colorant slice: with the prefabricated PE colorant of finishing, be made into the thin slice of the following thickness of 0.5mm with film-discharging machine, operating temperature is about 120 ℃, and the time is about 10 minutes, and this thin slice is cut into suitable size;

(3) making of EVA foaming body body: based on the EVA plastic rubber material, add various additives, be mixed into the semi-finished product of body material through mixer, about 80～85 ℃ of operating temperature, the time is about 7～10 minutes;

(4) mixing and the slice of EVA body material and PE colorant:

(1) EVA foaming body body in mixer, mix finish after, promptly gradually to wherein adding the prefabricated PE colorant thin slice of finishing, rub to roll over through reasonable time and mix, after the taking-up again through two running roller Luntai slices; Or

(2) EVA foaming body body is mixed in mixer finish after, take out and to be transferred to two roller roller platform slices, in slice, gradually to wherein add PE colorant thin slice rubbed roll over mix after slice again;

About 2～the 3mm of above slice thickness, operating temperature need be controlled at about 80～85 ℃;

(5) pressure platform foaming: get the semi-finished product that an amount of step (4) makes and place pressure platform mould, pressurized, heated, give foaming the process time through setting, about 160 ℃ of mold heated temperature, decide on mould is thick process time.

Aforesaid preparation has the method for intermittent multicoloured foaming product, and wherein the component design of step (3) is filler, activator, bridging agent or processing inorganic agent.

Employed colorant can slice, and obtains required powder through grinding, it is made an addition in the foaming body body mixing, and its colorant powder size is 0.1～2mm.

Brief Description Of Drawings:

Fig. 1 is the manufacturing flow chart of the inventive method.

Preparation of the present invention has the method for intermittent multicoloured foaming product, sees also shown in Figure 1ly, and being mainly provides a kind of method with intermittent multicoloured EVA foaming product for preparing, and whole process comprises following step:

(1) prefabricated PE colorant: required colorant is added in the PE particle, and the interpolation of colorant can be according to demand, for multicolour or can be made into the PE colorant of different colours.

(2) PE colorant slice: with the prefabricated PE colorant of finishing, make into about the thick sheet of 0.5mm with film-discharging machine, operating temperature is about 120 ℃, film-discharging machine and slice method are customary way, operating time is about 10 minutes, then again this thin slice is cut off into suitable size, so that and EVA bulk material mixing. The size of this thin slice is decided on the size of mixer, is generally the size of 60cm * 100cm.

(3) making of EVA foaming body body: take the EVA plastic rubber material as main body, add various additives, be mixed into the semi-finished product of body material through kneader, operating temperature is about 80～85 ℃, time is about 7～10 minutes, and the additive that adds comprises filler, activator, crosslinking agent, blowing agent, reinforcing agent or processing inorganic agent etc.

(4) mixing and the slice of EVA bulk material and PE colorant: this step has two kinds of methods:

Method (one): EVA foaming body body in kneader, mix finish after, namely gradually to wherein adding the prefabricated PE colorant thin slice of finishing, rub to roll over through reasonable time and mix, after the taking-up again through two running roller Luntai slices.

Method (two): EVA foaming body body in mixer, mix finish after, take out and to transfer to two running roller Luntai slices, in slice, add gradually PE colorant thin slice, rubbed roll over mix after slice again.

The slice thickness of above-mentioned two methods is about 2～3mm, and operating temperature need be controlled at about 80～85 ℃.

(5) pressure platform foaming: get the semi-finished product that an amount of step (4) makes and place pressure platform mould, pressurized, heated, give foaming the process time through setting, and the heating-up temperature of mould is about 160 ℃, decide on mould is thick process time, is generally 12 minutes.

Below be described further with an embodiment:

Get PE colorant 100 gram, behind two running roller Luntais mixing evenly (temperature is 120 ℃, and the time is about 10 minutes), slice again, the about 0.3～0.5mm of thickness, and cut into appropriate size as required.

Getting 200 gram EVA plastic rubber materials, 40 gram fillers, 1.2 gram activators, 1.3 gram crosslinking agents, 5.7 gram blowing agents puts into mixer and tentatively mixes (80～80 ℃ of temperature, about 7～10 minutes of time).

Method (one): get an amount of above-mentioned thin slice colorant of making and insert in the mixer and mix (80～85 ℃ with the EVA major ingredient, 2～3 minutes time), the material that mixing is finished is inserted in two running roller Luntais and is mixed slice (80～85 ℃ of temperature, 1～2 minute time, thickness 2～3mm) again.

Method (two): the above-mentioned EVA major ingredient of finishing inserted earlier in two running roller Luntais mixes, get an amount of above-mentioned PE thin slice colorant again, add gradually, rub roll over mix after slice (80～85 ℃ of temperature, 2～3 minutes time, thickness 2～3mm) again.

Again will be the suitably above-mentioned mixing EVA semi-finished product material with intermittent dotted colour that goes out is inserted pressurized, heated in the pressure platform mould, foaming (160 ℃ of temperature, pressure is 6.5psi, and the time is about 12 minutes), can obtain the needed intermittent multicoloured foaming product that has.

It is low, easy and simple to handle that method of the present invention has cost relative to existing technologies, saves the characteristics such as manpower, man-hour, and the intermittent dotted colour that the foaming product of making has has certain stability.

Claims

1, a kind of preparation has the method for intermittent multicoloured foaming product, it is characterized in that: add colorant in foaming body body foaming.

2, the method for claim 1, it is characterized in that: the carrier of colorant has the softening point higher than foaming body bulk material, can use a kind of colorant when mixing, or with two kinds of coloring material for mixing with two or more colors, cause the uneven distribution shape, and obtain having intermittent multicoloured foaming product.

3, the method for claim 1 is characterized in that: the foaming body bulk material is EVA, PU, PE or PS.

4, the method for claim 1 is characterized in that: pigment carrier is PE, and the foaming body body is EVA, and this method comprises the following step:

(1) prefabricated PE colorant: required colorant is added in the PE plastic pellet, fully mixing evenly, and be made into PE particle colorant by granulation;

(3) EVA foaming body body is made: based on the EVA plastic rubber material, add various additives, be mixed into the semi-finished product of body material through mixer, operating temperature is 80～85 ℃, and the time is 7～10 minutes;

(4) mixing and the slice of EVA body material and PE colorant:

(1) EVA foaming body body in mixer, mix finish after, promptly to wherein adding the prefabricated PE colorant thin slice of finishing gradually, rub to roll over through reasonable time and mix, after the taking-up again through two running roller Luntai slices; Or

(2) EVA foaming body body in mixer, mix finish after, take out and to be transferred to two running roller Luntai slices, in slice, gradually to wherein adding PE colorant thin slice, rubbed roll over mix after slice again;

Above slice thickness is 2～3mm, makes temperature and need be controlled at 80～85 ℃;

(5) pressure platform foaming: get the semi-finished product that an amount of step (4) finishes slice and place pressure platform mould, pressurized, heated gives foaming, about 160 ℃ of mold heated temperature, and decide on mould is thick process time.

5, method as claimed in claim 4 is characterized in that: the additive of step (3) is filler, activator, crosslinking agent or processing inorganic agent.

6, method as claimed in claim 4 is characterized in that: colorant can slice, carries out mixingly in the foaming body body and make the powder of required particle diameter and make an addition to through grinding, and its colorant powder size is 0.1～2mm.