CN1355092A

CN1355092A - Color preform and its forming mold and manufacturing method

Info

Publication number: CN1355092A
Application number: CN 00132695
Authority: CN
Inventors: 宋健民
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-11-23
Filing date: 2000-11-23
Publication date: 2002-06-26

Abstract

The invention relates to a color bottle blank, which comprises a bottom blank and an outer blank, wherein the upper section of the bottle opening and the bottle body are thicker bottle walls when the bottom blank is injected, the other parts of the bottom blank are thinner walls extending outwards from the inner wall to form a recess, and the outer blank is used for injecting the bottom blank by the same material with different colors to fill the outer wall of the recess, so that the bottle body can form the bottle blank with the same wall thickness. At least one layer of medium embryo with different colors is arranged between the bottom embryo and the outer embryo, and each medium embryo forms the outer wall of a section of bottle embryo in sequence. The bottle embryo is made of high molecular material, preferably PET, and at least one of the bottom embryo, the middle embryo and the outer embryo is transparent and colorless. The bottle body is formed after being extended and blown. The invention also provides a forming die and a manufacturing method thereof.

Description

Colour row bottle and mould thereof and method for making

The present invention relates to a kind of colour row bottle and mould thereof and method for making, belong to the plastic products manufacture field.

By the normal bottle that claims of bottle device or people institute supply people as container capable for a long time, it alternates to some extent along with the difference in epoch, especially because of the development of industrial technology and the evolution of civilization, the material of also feasible bottle device, by the initial nature thing of taking from, and through pottery, metal, glass, and even present common macromolecular material, often claim " PET " container of PET bottle as people.

The macromolecule container, as Bottle ﹠ Can, its method for making is to utilize the ductility of material, and carry out to penetrate extension blowing moulding mode, also be people the normal bottle blowing technique that claims, be to desire the material of moulding at this moment, as the PET material,, penetrate earlier one hollow but have bottleneck bottle embryo partly with injection molding method, then the bottle embryo is inserted in extension and the air blowing mould, form the bottle that inside is hollow to extend to blow, and in extending air blowing process, finish the stage that then can be used as, or two the stage finish, but basically after finishing.Just form have can with the sealed bottleneck of bottle cap partly, and the hollow body that the below one connects is partly.

On the other hand, because bottle is container, for packing container, the liquid commodity of consumer market especially, so as fruit juice, the occasion of beverage often must be earnestly hoped by means of vision, to commend the characteristic of commodity, puts as paster can add, or prints body, obtains this function.In other words, with the bottle tool of present various blowing mouldings, it is single color, so other vision demand function of several nothings can be sayed except that the appearance of bottle.

The objective of the invention is to propose a kind of colour row bottle and mould thereof and method for making, make the bottle of making have different color and the variation of look section, propose its required corresponding shaping mould and method for making simultaneously.

The technical scheme of implementing above-mentioned purpose of the present invention and taking is as described below: this colour row bottle comprises that an end embryo is that bottleneck and body epimere partly are thicker bottle wall when penetrating, and all the other partly then are from the inwall thin wall thickness that stretches out and form depression; One outer embryo is that embryo of the aforementioned end is penetrated the outer wall of filling up its depression with the different same material material of color, makes whole bottle body form the bottle embryo of identical wall thickness; Have the middle embryo of one deck different color at least between end embryo and outer embryo, embryo forms the outer wall of one section bottle embryo in regular turn in respectively being somebody's turn to do; The bottle embryo is made by macromolecular material; Macromolecular material is good with PET; Have at least one to be clear, colorless between end embryo, middle embryo and outer embryo; Bottle forms through extension and after blowing; Its method for making comprises that an end embryo forming step is that macromolecular material is poured into ejection shaping die, and obtains bottleneck and body epimere through ejection formation and be thicker bottle wall, the end embryo that its periphery of bottle wall of hypomere then has depression; One outer embryo forming step is that end embryo is inserted outer embryo ejection shaping die, and the macromolecular material that will be different from end embryo color injects outer embryo forming mould, behind ejection formation, this outer embryo can be filled up the depression part of end embryo, forms identical wall thickness but the bottle embryo of tool different color; End embryo forming step and outside between the embryo forming step, add and put at least one middle embryo forming step, be that end embryo is inserted in the middle embryo forming mould at this moment, and injection macromolecular material, behind ejection formation, fill up the wall thickness of embryo depression at the bottom of a section, fill up to form the outer wall of at least three sections its adjacent color inequalities for outer embryo forming step but still leave one section depression; Its mould comprises that a bed die is made up of two-half die, has the big hopper that forms bottleneck and bottle embryo upper semisection on it, and the thin hopper in below, and is communicated in the injection of material road feed liquid; One external mold is made up of two-half die, has on it to supply the thin hopper of this bed die hopper partly, and is communicated in the material road; Feed liquid is injected bed die can form end embryo, and end embryo is inserted external mold and injected the different colours feed liquid, then forms the bottle embryo of identical wall thickness; Can add and put at least one middle mould, mould has the hopper that can supply the thin part of embryo at the bottom of a section in this, and is communicated in the material road; External mold then has supplies the hopper that middle mould is filled up surplus section of back, and end embryo places mould in regular turn, obtains the identical bottle embryo of wall thickness behind the outer mold forming.

Now the embodiment shown in conjunction with the accompanying drawings is further elaborated colour row bottle of the present invention and mould thereof and method for making.Wherein:

Fig. 1 is moulding bed die of the present invention and end embryo schematic diagram;

Fig. 2 is second mould of the present invention and the second look embryo schematic diagram;

Fig. 3 is the present invention's the 3rd mould and the 3rd look embryo schematic diagram;

Fig. 4 is finishing die of the present invention and bottle embryo finished product schematic diagram;

Fig. 5 is a flow chart of the present invention.

As shown in the figure, the present invention is an example with the bottle embryo of four looks basically, but can be two looks or more than the two look bottle embryos, depend on the needs not as limit when implementing.

As shown in Figure 1, bed die 1 of the present invention is made up of the half module 11 of all right one way or the other folding each other, its central authorities then are a core 12, and and 11 of aforesaid two-half dies, form the hopper 13 of ring-type, actually this hopper 13 is for penetrating the ccontaining and formation bottle embryo component part of material, so it has a material road 14 and is communicated in feed arrangement, as shown in the figure, the hopper 13 of bed die 1 comprises bottleneck 15 and bottle embryo inwall, and shown in the imaginary line then is the peripheral outline line of finished product bottle embryo, so, in the thickening of bed die 1 hypomere die wall, and make it form the thick first thin down look embryo 16 in hopper 13, this first look embryo 16 comprises aforesaid bottleneck 15 partly.

Second mould 2 is similar to aforesaid bed die 1 as shown in Figure 2 and has second core 22, but its difference is in the side thickness of die of its second half module 21, more aforementioned bed die 1 is for thin, and with the aforementioned first look embryo, 16 joints, form one second hopper 23 with mould inner wall, simultaneously, be communicated in the second material road, 24, the second hoppers 23 and behind pouring material, then can form the second look embryo 25 that is coated on the aforementioned first look embryo, 16 lower semisections part.

The 3rd mould 3 also is similar to the aforementioned bed die 1 and second mould 2 as shown in Figure 3, central authorities also have one the 3rd core 32, but more aforementioned again second half module 21 of the side thickness of die of the 3rd half module 31 is for thin, simultaneously, peripheral upper end by the aforementioned second look embryo 25 down partly then forms the 3rd hopper 33, and be communicated in the 3rd material road 34, behind the 3rd hopper 33 pouring materials, then form the 3rd a look embryo 35 from the aforementioned second look embryo, 25 peripheral these second look embryos 25 of hypomeres coating.

The 4th mould 4 as shown in Figure 4, also similar in appearance to aforementioned each mould, and form by two the 4th half modules 41, central authorities have a four-core mould 42, simultaneously, respectively in the 4th half module 41, have a periphery and the 4th a corresponding hopper 43 of bottle embryo profile, and be communicated in one the 4th material road 44, injection for material, and the 4th hopper 43 then coats all parts of aforementioned the 3rd look embryo 35 hypomeres at filled material and after being shaped, and forms the 4th look embryo 45, the 3rd look embryo 35 of the 4th look embryo 45 and its epimere as shown in the figure, reach the second look embryo 25 of epimere again,, can form different colors because of the difference of material color together with the first look embryo 16 and bottleneck 15.

Discuss with the colour mixture principle, be water white transparency if establish the first look embryo 16, and the second look embryo 25 can be as yellow, green or blue, and even other multicolour, and the 3rd look embryo 35 is selected the color that is different from the first look embryo 16 and the second look embryo 25 again for use, and the 4th look embryo 45 is elected as inequality again, then can mix out the bottle embryo of various look embryo section different colors, and after follow-up extension and blowing, promptly get bottle with different color and the variation of look section.

Also can produce the bottle embryo with not homochromy section when using non-transparent material, of all kinds section then can be periphery according to Mould design contour or wavy, and even other default section faces cut apart, but this all belongs to the known technology of mould design, so do not intend giving unnecessary details.

Preparation method of the present invention sees also the flow chart of Fig. 5, and this flow chart also is set as four identical molded journeys, promptly comprises the first look embryo forming A, the second look embryo forming B, the 3rd look embryo forming C, and step such as the 4th look embryo forming D.

The first look embryo forming steps A is that material is fed in the aforesaid bed die 1, and ejection formation, and die sinking then obtains the first look embryo 16.

The second look embryo forming B inserts the aforementioned first look embryo 16 in second mould 2, and injects with materials of different colors, obtains the local second look embryo 25 that coats the aforementioned first look embryo 16 after injecting moulding.

The 3rd look embryo forming C inserts the aforementioned second look embryo 2 in the 3rd mould 3, and through injecting with the second look embryo, 25 materials of different colors, promptly obtains local the 3rd look embryo 35 that coats the second look embryo 25 behind ejection formation and the demoulding.The 4th look embryo forming D inserts aforementioned the 3rd look embryo 35 in the 4th mould 4, and injects and the 3rd look embryo 35 materials of different colors, promptly obtains the local bottle embryo finished product that coats aforementioned the 3rd look embryo 35 behind ejection formation.

The above-mentioned step that respectively penetrates can be carried out as the rotating disk mold in turn via the mode of automation, and between two steps of being separated by, the color inequality is for sufficient, and also promptly first bottle of embryo 16 and second bottle of embryo 25 are different colours, are not can only limit to make different colours separately.

Be good with PET in the selection of material, but not as limit, other can all can use for the macromolecular material that penetrates and extend blowing moulding.

Actually go up, the described occasion of making four looks of the embodiment of the invention, but its minimum dichromatism of making, also promptly by embryo at the bottom of the bed die moulding, reach an external mold and form outer embryo, and end embryo connects bottleneck and partly exposes, all the other are then coated by outer embryo, so promptly forming two sections is the bottle embryo of different colours, and can obtain double-colored bottle after extending the bottle blowing processing of blowing.

So, can obtain the bottle embryo of colored bottle via enforcement of the present invention, extend the bottle obtain and blow through it, have the above color change of dichromatism at least, this be known bottle blowing technique can't obtain.

Disclosed, be one of preferred embodiment, Ju Bu change or modification and come from the technology of the present invention thought and this technical staff is easy to know by inference in order to be familiar with such as all do not break away from patent right category of the present invention.

Claims

1. A colored preform, characterized in that, the colored preform comprises:

A bottom embryo is a thicker bottle wall at the bottle mouth and the upper part of the bottle body when it is injected, while the rest of the bottle is formed with a thinner wall thickness extending outward from the inner wall to form a depression;

An outer embryo is to inject the aforementioned bottom embryo with the same material material of different colors to fill the outer wall of the depression, so that the entire bottle body forms a preform with the same wall thickness.

2 . The colored preform according to claim 1 , wherein there is at least one layer of mesoderms of different colors between the base embryo and the outer embryo, and each of the mesoderms sequentially forms a section of the outer wall of the preform. 3 .

3. The colored preform according to claim 1, characterized in that the preform is made of polymer material.

4. The colored preform according to claim 3, wherein the polymer material is preferably PET.

5 . The colored preform according to claim 2 , wherein at least one of the bottom embryo, the mesoderm and the ectomorph is transparent and colorless.

6. The colored preform according to claim 1, wherein the bottle body is formed by stretching and blowing.

7. A method for preparing a colored preform, characterized in that the method comprises:

The first base molding step is to pour the polymer material into the injection molding mold, and through injection molding, the upper part of the bottle mouth and the bottle body is thicker, and the lower part of the bottle wall has a concave base around its periphery;

The first step of ectogenetic molding is to put the base into the ectogenetic injection mold, and inject the polymer material different from the color of the base into the ectogenetic mold. After injection molding, the ectogene can fill the concave part of the base , forming preforms with the same wall thickness but different colors.

8. The method for making a colored preform as claimed in claim 7, characterized in that, between the bottom blank forming step and the outer blank forming step, at least one medium blank forming step is added, at this time, the bottom blank is placed in the middle blank. Inject the polymer material into the embryo forming mold. After injection molding, fill the wall thickness of a section of the bottom embryo depression, but there is still a section of depression for the outer embryo forming step to fill in to form at least three adjacent sections with different colors. outer wall.

9. The method for preparing a colored preform according to claim 7, wherein the polymer material is PET.

10. The method for preparing a colored preform according to claim 7, wherein the polymer material is transparent.

11. A forming mold for a colored preform is a polymer injection mold, characterized in that the forming mold comprises:

A bottom mold is composed of two halves, on which there is a larger trough forming the bottle mouth and the upper half of the preform, and a thinner trough at the bottom, which is connected to the injection of the feed liquid in the forehearth.

An outer mold is composed of two halves, on which there is a trough that complements the thinner trough part of the bottom mold, and communicates with the material channel;

The material liquid is injected into the base mold to form a base embryo, and the base embryo is placed in the outer mold and injected with different color material liquids to form a preform with the same wall thickness.

12. The color preform as claimed in claim 11, characterized in that at least one middle mold can be added, and the middle mold has a material trough that can complement a thinner part of the bottom embryo, and is connected to the material channel; The mold has a trough that complements the rest of the middle mold, the bottom embryos are placed in the middle mold in sequence, and the preforms with the same wall thickness are obtained after the outer mold is formed.