CN1009352B - Method and apparatus for packaging permanent adhesive materials - Google Patents

Abstract

The present invention relates to a method for packaging an agglomerate permanent adhesive material, which can prevent a packaged object from being pasted on another packaged object or being contaminated by impurities in the process of storage and transportation. The method of the present invention comprises a stage that the material is cast in a casting mould so that the material is formed. The present invention is characterized in that the whole inner surface of the casting mould forms a powder material net before casting operation, the adhesion of the net is maintained in the whole process of casting so that the particles of the powder material are kept pasted with each other all the time, and the powder material net is formed in a static electricity method and kept adhesive. The packaged object is taken out of the casting mould after being hardened and formed, and all the surfaces of the packaged object, which are originally opposite to the inner surface of the casting mould, are protected by the powder material net.

Description

Method and apparatus for packaging permanent adhesive materials

The present invention relates to be block, the surface is coated with a kind of packing method with the permanent adhesive materials of dusty material particle, more particularly, relate to and depend on character and composition, it is fusible to be heated, shape is indefinite, is in pasty state, plastic state, resilient, a kind of packing method of semisolid or solid-state block.

The present invention also relates to carry out a kind of device of this method.

In many chemical industrie active procedures, must use permanent adhesive materials, this is on record, and is common with indispensable.This permanent adhesive materials more particularly under the normal temperature about 20 ℃, satisfies following one or more conditions when cooling:

The intrinsic stickness of-block,

-under normal temperature and pressured state, there is stickness on the surface,

-pressure-sensitive,

-because temperature rises (for example in summer) naturally, apparent condition (stickness) changes.

Therefore, general tems " permanent adhesive materials " comprising:

(1) binder resin (rosin, coumarone-indene resin and group aliphatic resin)

(2) the adhesive runny wax of certain surface is arranged,

(3) poly-mer (polypropylene, polyisobutene) and the copolymer of certain kind,

(4) the certain kind pitch and artificial pitch prill that can not be out of shape.

(5) use resin, the pitch prill and the artificial pitch prill of plasticizer and elastomeric material improvement.

(6) elastic body of certain kind, buttress rubber for example,

(7) by at least a poly-mer, at least a natural or synthetic resin, a kind of plasticizer and, if necessary, the hot-melt adhesive of the various prescriptions that a kind of filler is formed.

(8) generally speaking, all produce the product or the process product processed of the adhesive state of nature of front rated condition when cooling.

Because intrinsic stickness during above-listed various materials cooling though in processing, transportation or storage process, must be protected it, is bonded together so that prevent it, perhaps is stained with impurity.

Therefore, in order to pack permanent adhesive materials, thereby prevent that it is bonded in one and prevent to be stained with impurity, once proposed and carried out many methods.

At first, as everybody knows, do not packing this material in co-content and the shapes of containers (keg, shipshape vessel and sack), the inside face of these containers is lined with non-adhesive material, and for example special wax perhaps usually is coated with to contain the compound of silicone.But this guard method has following shortcoming: the one, and the container cost height, the 2nd, need user oneself from mold, to take out packaged block.

Secondly, as everybody knows, these permanent adhesive materials of packing in having not co-content and shapes of containers (various bulk containers) are protected it, and these containers are generally cylindrical, mostly are greatly that metallic becomes and inner unshielded layer.

In above-mentioned two kinds of situations, packed article is obviously attached on the container.Second kind of guard method must have following two kinds of significant disadvantages: use for the user in order to take out packed article (1); need isolated plant (heating electrode or other make the device and the dedicated transport pump of product fusing); all these isolated plants; be heating electrode, melter and dedicated pump are all very expensive.(2) this guard method meeting causes a large amount of consumes of protected material, because on the wall of a container, particularly the bottom of container is surplus lot of materials, is bonded at the there, can not pump.

The 3rd, as everybody knows, do not pack permanent adhesive materials in the co-content and shapes of containers having, but the volume of these containers is less, as plate, its recess can hold 100 to 1000 gram bulk materials.This plate is made by special plastics, so the character that cannot not have stickingly of Pan Bi, and therefore this plate can be used to pack the permanent adhesive materials through processing.

This method also has two kinds of major defects: the cost height (2) of (1) this disc shaped container needs user oneself to take out material from dish, and its operation is very difficult, particularly when shrinking less in the permanent adhesive materials metamorphosis process or not shrinking.

The 4th, as everybody knows, the rod that provides, piece, grain, bar, sheet, tabular permanent adhesive materials are encapsulated in the film that polyethylene, polypropylene or polyethylene and polypropylene composite material make.But the packing method cost of this use film is also very high.And, available, be applicable to that the film of this packing is quite limited, this be because, on the one hand when the packaged material of casting, its temperature can reach 160 ℃, temperature is more taller sometimes, film must not be melted; When on the other hand, melting packaged material during use once more; Film will mix admirably with packaged material, because packaged material can not separate with protective film this moment, this point is most important.Last this 4th kind of method is only limited to the sticky material of packing several melted by heat, because the product that obviously has only those viscosity to be suitable for this packing principle just can be packed in this way.

The 5th; as everybody knows, can melt and some adhesive material being heated, promptly the block of mixed rubber or caoutchous stirs in powdery medium; obtain a coating on its surface, so that before sulfuration, it is protected and/or in sulfuration, successfully it is suppressed.

This method by coating protection; at patent specification DE-A-2; 037; open in 878; but it has many shortcomings; for example irregularity of (1) powder coating material and remaining always characteristics; (2) the powder coating material occupies high percentum; during ball shape material that especially the processing list area is very big; (3) use thereafter has the problem that the rubber of this coating produces; or rather, the material of coating is different from coated material as everybody knows, and this insignificant material occupies high percentum can hinder or damage the processed that the user carries out the rubber that has this coating.

The objective of the invention is to eliminate all above-mentioned shortcomings; a kind of packing method and device are proposed for this reason; can protect permanent adhesive materials in the expense lowland; and when using, needn't from its mold, take out by needs; thereby saved a large amount of time, and also needn't be heating, carry protected material and be that specialized equipment is invested; amount importantly uses method and apparatus of the present invention that very big alerting ability is arranged, and can pack and protect all permanent adhesive materials of mentioning in this specification sheets.

Of the present invention first to as if a kind of packing method of permanent adhesive materials, block or tabular permanent adhesive materials is coated with the particle of dusty material, so that in the process that stores or carry packed article (still staying in the mold in from mold, having taken out or having transported), prevent that itself and another packed article is bonded together, prevent that perhaps impurity from adhering to its surface.This packing method comprises the stage of casting in order to make packaged permanent adhesive materials moulding in mold.It is characterized by (1) before casting; a dusty material net is provided on the mold total inner surface; (2) in whole pouring operation, keep this net to adhere; therefore the particle of dusty material adhesion mutually all the time; the dusty material net is formed by electrostatic methods and keeps adhering; (3) after sclerosis and moulding, packed article is taken out from mold, the original all surface relative with the mold inside face of this packed article all protected by the dusty material net.

By carrying out said method; though each product packaged and protection ideally and intactly is closed by the dusty material net; the thickness uniform and thin of this net; and the dusty material requirement is very little can to reach the protection purpose; can accurately grasp the percentum of dusty material, can accomplish to know what's what this user with respect to packaged material.

Therefore, if dusty material is inertia aspect chemical, it just can not have problems in the use of permanent adhesive materials.On the other hand; if selected dusty material constitutes a kind of composition of permanent adhesive materials prescription; just can use a certain amount of with the form of guard net in advance; so just no longer needing to add this composition has in addition filled a prescription to finish; perhaps can be in advance use with the form of guard net not enough; but strictly determined amount, when adding all other compositions of this prescription thereafter, this dusty material can reach desirable percentum like this.

Use electrostatic methods before casting, to form the dusty material net and in whole casting cycle, keep stickness; like this; how the inner surface configuration of mold all may make the dusty material net even fully; homogeneity and continuous; thereby guaranteed the formation of guard net, made its thickness accurately corresponding to packaged permanent adhesive materials piece.And a result of this method is that any fusible permanent adhesive materials in back that is heated of might casting does not make displacement of dusty material net or distortion and can not cause, because this net is " electricity consumption installation ".

In an embodiment of this method, this net be which floor the dusty material particle is overlapping forms, if necessary, the several layers of its outermost can reclaim after being that packaged material is taken out from mold.

A result of this method is, guard net can use the least possible dusty material, and if requirement, also make the percentum of dusty material with respect to the permanent adhesive materials of being packed fully, be reduced to desirable value.

In a specific embodiment of this method; permanent adhesive materials is cast in the mold of an opened upper end; on the upper surface of the approximate horizontal of packed article; before after sclerosis and from mold, taking out, can sprinkle with the identical or different dusty material particle of guard net or coat a kind of oleaginous fluent material and protected.

In this embodiment, the dusty material of the upper surface of protection packed article is to be same as, and still is different from the material of the net between mold inside face and the packed article apparent surface, can be selected by the user.

Another aspect of the present invention is to carry out the device of said method, and this device comprises a casting permanent adhesive materials and make the mold (seeing DE-A-2,037,878) of its moulding that this mold has the device that forms the dusty material net in this mold total inner surface; In order on this mold total inner surface, to form the dusty material net, provide the device of positive charge to each particle of dusty material; Make mold ground connection, thereby in whole casting cycle, make this net keep the device of adhesion, and packaged product is taken out from mold so that the device that the original all surface relative with the mold inside face protected by the dusty material net with electrostatic methods.

In first embodiment, this device has a mold at least, this mold is made up of the two parts that are called bed die and die cap respectively, the dusty material net is all arranged and make it keep adhesion, the permanent adhesive materials of all can casting in each mold in the total inner surface of each mold.

In this embodiment, this device also has combines two parts of mold, thereby make the contacted device of upper surface of each half packaged ingot bar of cast molding in two parts of mold, and if necessary, after the contact surface refuse of two half packaged ingot bars, make the device of its close adhesion.

In another embodiment, the device of carrying out packing method of the present invention comprises: the mold of an opened upper end forms the dusty material net and keeps this net to adhere to device there on this mold total inner surface; When keeping the intact adhesion of dusty material net, the device of casting permanent adhesive materials in this mold; By the method for dusting powder material particle or greasing fluent material, protect the device of upper surface of basic horizontal of the packed article of moulding; And the device that from mold, takes out such protection fully of process and packaged products.

With first kind of device package among above-mentioned two kinds of embodiment, be block or tabular permanent adhesive materials, have thin and the uniform dusty material net of thickness at its outside face, thereby improve ground and intactly protected permanent adhesive materials.

With the device above-mentioned second kind of embodiment pack the bulk or tabular permanent adhesive materials; surface except that its upper surface has thin and the uniform dusty material net of thickness, and this upper surface is by oil fluent material coating or sprinkle the dusty material particle that is different from this net and protect.

Under special circumstances, must add filler in permanent adhesive materials, advantageously, the dusty material of forming this net is the part of filler, or a kind of composition of ideal formulations, and for example antioxidant or fire retardant is whole or a part of.

From above explanation of the present invention as can be seen, this new mode that the present invention proposes, the method for the prior art of general introduction has some advantages when this specification sheets begins.

First kind of guard method mentioning when beginning with specification sheets compared, and the advantage that the present invention has is: greatly reduce Packing Fee (need not container) and eliminated all operations that takes out when using from mold, thereby also saved the time greatly.

Compare with the second method of mentioning, the present invention has avoided the loss of material, and the user also needn't invest and purchase the special equipment of carrying packaged permanent adhesive materials.

Compare with the third method of mentioning; the advantage that the present invention has is: the plate that has replaced special non-adhesive material to make with the guard net of dusty material; and economization the relevant operation that must from mold, take out block or tabular permanent adhesive materials when using, thereby reduced Packing Fee.

Compare with the 4th kind of method of mentioning; the present invention has the selectivity of broad to the character of the employed dusty material of guard net, thereby has very big alerting ability, and; as a result of the present invention, the present invention can pack the almost whole permanent adhesive materials described in this specification sheets.In fact; the present invention can protect all sticky materials outside the material of removing those excess flow by isolated mode, this be because; if the initial block or tabular excessive deformation that forms just can't guarantee whether the dusty material net still can keep rectangular distribution.

Compare with the 5th kind of method of mentioning, regardless of the stickness of various sticky materials, the present invention can pack it.And method of the present invention can guarantee the perfect homogeneity of dusty material layer and perfect homogeneity, this point be the coating of in mixer, carrying out method can't guarantee.At last; packing for similar block sticky material; method of the present invention can reduce widely and form the needed dusty material amount of effective guard net; that is, the required dusty material amount of method of the present invention only be for store or the polysulphide rubbers piece when carrying out coating method therefor about a thirtieth.And to compare consumption small owing to guarantee to pack needed dusty material and protected material by special quality, in some application scenario of the present invention, just might be used as a kind of composition in the last ideal formulations to the dusty material net.On the other hand, the protection rubber block needs a large amount of dusty materials, and this just makes used dusty material can not be used as composition in the ideal formulations except being used as filler at all.

In order to make the people understand object of the present invention better, now contrast description of drawings some embodiment of the present invention, but the present invention has more than and is confined to these embodiment.

Fig. 1 a and 1b are to use the cross sectional representation of the device of the inventive method, are respectively a uncovered mold and one and have two antimeric molds.

Fig. 2 is to use the longitudinal section of the baling line of mold among Fig. 1 b.

Fig. 3 is half ingot bar of explanation by bonding packaged two symmetries, thus the cross sectional drawing of the operating process of formation permanent adhesive materials piece.

The cross sectional drawing explanation of Fig. 4 is taken out the permanent adhesive materials piece that forms in the operating process shown in Figure 3 from mold operation.

Fig. 5 is from Fig. 1 b, and Fig. 2 is to the perspective diagram of the packaged product that device shown in Figure 4 obtained.

Fig. 6 is the phantom view of an embodiment of apparatus of the present invention, and this embodiment is bonded together two packaged half block ingot bars serially, and then it is taken out from mold.

The contrast accompanying drawing, as can be seen, label 1 representative can make one to several permanent adhesive materials moulding, have one or the mold of several die cavitys, this mold can be made of (label is 2 among Fig. 1) the part of an open-top, also can be made up of two parts, i.e. a bed die 3 and a die cap 4 are as shown in Fig. 1 b and Fig. 2 to Fig. 4.The label of the die cavity of open mold is 5, and the label of the die cavity of the bed die 3 of the mold of being made up of two parts and the die cavity of die cap 4 is respectively 6 and 7.As shown in the figure, these two partial shapes are just the same and symmetrical, and perhaps as another kind of embodiment, these two parts also can have different shapes, and for example, die cap is flat, rely on the die cavity of bed die to make the ingot bar moulding; In this third embodiment; for example can use preesure-poured mode; permanent adhesive materials is injected the die cavity of bed die; the inside face of bed die and die cap protects with the dusty material net according to the present invention in advance; behind the module hardened forming; as long as die cap is opened from bed die, can from mold, take out the bed die upset to this ingot bar.

But, the third embodiment of the asymmetric mold of this use two parts, it is comparatively complicated carry out, and when especially adopting the die casting mode, compared with common casting, die casting is always difficult to be carried out.

When each die cavity 5,6 and 7 whens cleaning, it is carried out the static dusting can adopt method known in any similar techniques, for example, the method that cable coating uses or to radiator, employed method when bicycle and all complex-shaped objects carry out coating.For example; patent specification US-A-2; 560; 07 discloses on the ground connection tire and has been coated with powder particle; as talcous method, powder particle is blowed to an electrode, powder particle obtains positive charge on electrode; and then it is blowed to tire, these particles just by electrostatic methods attached on the surface of tyre.

In device of the present invention, when spraying mold, when perhaps making mold pass through fluid bed with spray gun, all parts 2 of mold, 3 and 4 all are grounded, as shown in the reference numeral 8, so that on the inside face of all parts of mold, deposit the particle of the dusty material that has positive charge by the electrostatic adhesion phenomenon.For example, use about 20,000 to 80,000 volts positive voltage to make the dusty material particle have very high positive charge (+), mold constitutes and all charged particle lotuses number opposite negative pole, therefore charged particle is adsorbed on the inside face of mold die cavity securely.

Obviously, make can form in this way one evenly, homogeneity and continuous dusty material net 9, the thinner thickness of this net, and under any circumstance, no matter die cavity 5,6 and 7 shape how (hollow, protruding or recessed) they all are uniform.And, use this method by electrostatic methods formation dusty material net, can accurately decide the thickness of net, approximately from 10 to 80 microns according to packaged block.

After finishing by the static dusting operation of alphabetical A representative among Fig. 2, it then is the permanent adhesive materials of in inside face has all mold die cavitys of dusty material net, casting, in the casting operation with arrow 10 representatives among Fig. 1 and Fig. 2, casting amount in each die cavity will be grasped, so that make permanent adhesive materials reach the horizontal surface of this die cavity end face substantially, and form horizontal surface 11 at this die cavity end face.

In the whole process of casting operation (representing by letter b among Fig. 2), the dusty material net 9 of " electricity consumption is installed " remains its tack, and do not have broken-up danger, so permanent adhesive materials will not contact with the inside face of mold, thus avoided adhering to the danger on the mold inside face.

We can say that the particle of dusty material has constituted the complete impervious net of one or more layers cast material; This net is represented by continuous fine rule 12 in Fig. 1 a.

For example, use the method for blowing, make the permanent adhesive materials piece 13,23 and 33 of moulding in die cavity 5,6 and 7 cool off, so that quicken its sclerosis and moulding with cold wind.This process is represented by letter C in Fig. 2.

At this moment, can make in all sorts of ways, finish protection the product that does not protect fully as yet.

In the device shown in Fig. 2 to 4, mold is made up of two parts, these two parts by well-designed be two half modules that cooperatively interact, the half module 3 in left side and the half module 4 on right side, both are hinged together by the longitudinal axis 14 in the middle of it.As shown in 34 and 35 among Fig. 3 (Fig. 3 is the detail drawing of Fig. 2), these two half modules can be lifted symmetrically around its common axis 14, be in vertical substantially position up to these two half modules, in this position, half ingot bar that each is packaged, promptly 23 and 33 upper surface 11 contacts with each other, and tightly is not bonded together because of this surface is held mutually as yet.

After two half packaged ingot bars are bonded together, ingot bar is taken out from mold, its method is, two half modules of direction inclination with arrow 15, it is the assembly that left half module 3 and right half module 4 are formed, rotate left half module with the opposite sense shown in the arrow 16 around axle 14 then and make it break away from right half module, use any suitable holding device 17 that block packed article is taken out from the die cavity 7 of half module 4 at last.This packaged good product is to obtain by the method that the upper surface of not protected by the dusty material net of two half packaged ingot bars is bonded together.

The ingot bar 18(Fig. 5 that makes like this) seems that the outside has many particles, in fact constituted the thin net 19 that two packaged half ingot bars 20 and 21 complete closed are got up, therefore can be clear that the boundary line 22 of these two half blocks.

Because this guard net 19 intactly closes each permanent adhesive materials piece 18, thereby has prevented that they are bonding mutually, has prevented that also any impurity is bonded at its surface.So, as shown in arrow 24, can be put into the carboard box there with each ingot bar 18 fortune to a packing lines, perhaps transport to a marking line, stamp whole explanations (representing by D among Fig. 2) of relevant this packaged material.

In the operation that two upper surfaces 11 of half ingot bar 23 packaged two and 33 are bonded together, the stickness that each upper surface may take place is not enough to guarantee the situation of binding force certain between two half packaged ingot bars.For example, as the C of Fig. 2 when the stickness of undercooling or material itself is not enough in the stage, will this thing happens.In two kinds of above-mentioned situations, as long as recover the stickness on surface 11, for example, can provide heat with hot blast, make surface portion metamorphosis, become pasty state, thereby improve bonding situation.

After packed article 18 is taken out from mold; as the E of Fig. 2 in the stage shown in the label 25; from the die cavity 6 and 7 of half module 3 and 4, remove dust; and it is as shown in arrow 26; these two half modules are sent back to the beginning part of baling line; again cast there before the permanent adhesive materials, form guard net with the static coating device at inside face once more.

Whole working cycle is: the static dusting, make the dusty material net keep stickness with static, casting, cooling, the upper horizontal surface that does not have dusty material of two half packaged ingot bars is in contact with one another, is bonded together, from mold, take out ingot bar so that guarantee it, remove ash from empty mould, this circulates in shown in Fig. 2 to 4 and carries out continuously repeatedly on the baling line.

Fig. 6 represents to carry out second kind of embodiment of the continuous baling line of this self-shield sticky material.Mold 36 is made of some die cavitys 37, and die cavity 37 is a truncated pyramid, and its bottom surface is less, opened top.For example each mold 36 has three truncated pyramid die cavitys.

At F/s, the inside face-bottom surface 38 of each die cavity 37 and sidewall-protected with dusty material net 39, this net are to use aforementioned any electrostatic methods deposition to form and keep adhering.For example, can spray with spray gun when carrying out the static dusting, powder particle in the shower nozzle of spray gun, uses about 20,000 to 80,000 volts high potential and about 2.5 microamperes low current to make each powder particle have positive charge by shower nozzle air-flow spray feed.This step static dusting operation is by label 40 representatives.

Then, the direction according to arrow 41 moves to the casting station to each mold 36 along operating line from the dusting station.GPRS casting amount when carrying out the casting operation 42 of sticky material is so that the end face of the horizontal surface of cast material and each die cavity 37 is in sustained height.In whole casting operation, obviously fully keep its tack with the dusty material net 39 of electric forming so that make permanent adhesive materials by continuously and the net 39 of homogeneity fully completely cut off with the wall of die cavity.

Then, move to cooling stations according to the steering handle mold 36 of arrow 44 from casting station, whole cooling stations is represented by label 45.When mold passes through cooling stations, material cast 46 is cooled, for example, the method for cooling can be to blow extraneous air, perhaps makes mold pass through a cooling air channel, so that quicken the sclerosis and the moulding of each packed article.

Advantageously, mutual duplicate mold 36 is moved to bonding station as far as possible equably along cooling stations in couples, and whole bonding station is by label 47 representatives.

At this moment, dusty material net 39 weakens the adsorption affinity of the wall of each die cavity 37, even disappears, and the stickness of cast material has strengthened.Therefore, the dusty material net tends to adhere to the surface of cast material gradually with the inside face disengaging of die cavity, thus the protection cast material.Therefore, the work that can easily carry out each ingot bar taken out from mold and be bonded together by its exposed upper surface and identical second half packaged ingot bar.

For this reason, mold 36 is cooled off in couples, and delivers to conveyer with the direction of arrow 48 and 49, and conveyer is made up of the belt conveyor 50 and 51 of two symmetries, and two conveyor belt ends are relatively placed.Belt conveyor 50 and 51 carries out linearly shown in arrow 52 and 53, and speed equates, the motion that direction is opposite, therefore, in the zone that two belt conveyor are joined, the motion of two belt conveyor be symmetry and direction down.

Casting full mold 36 is placed on each belt conveyor 50 and 51 abreast, thereby move towards the zone that two conveyor belt ends are joined with constant speed, the exposed upper surface 43 that casts in two half packaged ingot bars in two relative die cavitys 37 in this zone is in contact with one another under pressure.

When moving downward end, after two relative half packaged ingot bars have been in contact with one another under pressure, fully, be surrounded by ingot bar 18 by gravitys of the permanent adhesive materials of dusty material net admirably, fall on the belt conveyor 55 with the direction of arrow 54, belt conveyor 55 is stood or printing station to vanning with this ingot bar fortune of steering handle of arrow 56.

Meanwhile, empty half module 36 for example, is adsorbed on belt conveyor 50 and 51 with magnetic force, delivers to end face with the direction of arrow 57 and 58 from the bottom surface of belt conveyor respectively, after cleaning, transports static dusting station again back.

Each operation of carrying is above carried out according to above-mentioned complete circulation.

In the device shown in Fig. 1 a, mold partly is made up of mono-and is open upwards, and after casting operation 10, then permanent adhesive materials hardens in this mold, and obviously the upper horizontal surface of this ingot bar 13 is not add protection, thereby adheres.In this embodiment, before packaged product is taken out from mold, can coat oil fluent material in this upper horizontal surface, as commercially available trade mark is the sort of of " Teepol ", perhaps also can (use spray gun, perhaps use auger type distributor, perhaps use the electrostatic cloth glassware) sprinkle the particle 27 of suitable dusty material, this dusty material can be same as or be different from this dusty material net 9 employed dusty materials, but also to belong to purposes, the material ranges compatible with permanent adhesive materials for user's expection.

On this problem, be used for guard net 9, and if necessary, be used for 27 dusty material and preferably have following character:

-in its state of nature or after treatment, can be electrically charged adapting to the requirement of static dusting,

-preferably can be melted,

-compatible with packaged sticky material,

-do not change the intrinsic speciality of packaged sticky material, as astringency and solidfying point.

Be applicable to many mineral that have of these requirements, organically, the dusty material of organometallic or plant, for example:

-calcium carbonate and amargosite when they add prescription, can reduce the price of material,

-barium sulfate, it can make the sticky material can detection of radioactive,

-titanium dioxide and zinc oxide, they are the most important fillers of sticky material,

-antimony oxide, it makes material have flame-proofness,

-french talc, it is used for controlling the stickness of prescription, and white

,

-cataloid etc.,

-hard wax, Tissuemat E (polyethylene waxes) and modified polyethylene wax (modified polyethylene waxes)

-polymer powder (polyethylene, polypropylene, ethene-vinyl acetate copolymer),

-hot melt or powdery resin,

-antioxidant or UV resistant agent, for example, phenol derivatives,

-natural resin (Arabic gum),

-starch, bone meal, guar gum powder.

The weight of ingot bar 13 that protection is made with said method or 18 dusty material is compared with the weight of protected sticky material, only accounts for small amount in theory.But; no matter this dusty material is used for forming net 19 by electrostatic methods; still form net 27 with the method that sprays; ratio between the material usage of accurately grasp formation net 19 and/or net 27 and the amount of packaged material; outside all having very much,, for example has the function (antioxidant of protection sticky material if when particularly forming net 19 and/or net 27 materials and being not inert filler; UV resistant agent or flame-proofing agent) or when having the function (plasticizer) that makes things convenient for the end user, especially like this.Therefore, in certain application scenario, preferably as far as possible accurately grasp the ratio of the material usage that constitutes net 19 and/or net 27.For this reason, a solution is, the net that several layers is thin is stacked to net 9, its way is the particle of (with spray gun or fluidization technique) continuous administration dusty material, because these particles all adhere to electrostatic methods, so they are attached together the film that forms a homogeneity, its thickness is greater than once dusting or fluidisation is operated the thickness of formed net, and is easier to accurately determine thickness.

If form one or more layers net 19 and/or 27 dusty material consumption surplus, and consumption that should surplus is an impediment to the operation of suitably carrying out thereafter, work as so each ingot bar 13,18 from mold, take out after, this superfluous consumption can reclaim from outermost layer, can carry out once other static dusting operation if necessary again, especially used dusty material more needs to do like this when costing an arm and a leg.

Obviously, the several layers of removing the outermost layer of net 19 and/or net 27 or outermost will never have influence on directly contact with packaged material layer, owing to the intrinsic stickness of packaged material, on the irreversibly bonding packaged material of this layer.

Obviously, the present invention is not limited to already mentioned method and embodiment, and the present invention also comprises other the different embodiment that belongs to by within the scope of the present invention of claims regulation.

Form as for mold more belongs to this situation, mold can be become by two parts or plural part, and under one situation of back, each several part can be all-in-one-piece, and be hinged, perhaps also can be separation type, in this case can be with riveted joint, bolt of rear end plate or screw or use other method to combine.Therefore, the height of the bed die of mold can be different from the height of die cap, the exposed upper surface of each the half packaged ingot bar that obtains in upper and lower mould respectively after key is to harden should be the same, and they could be bonded to each other together to form a smooth ingot bar like this.

This point is equally applicable to operable mold in the die casting.In this case, mold is made of a bowl-shape bed die and a flat die cap, before die casting, with screw or bolt this bed die and this die cap is fixed together, so that the pressure during opposing die casting.At the center of die cap or the top of a wall of bowl-shape bed die be provided with injection port.

The mold that is made of the die cap of the bed die peace of hollow also can be used for general casting; at this moment packaged material is only by gravity casting; when casting; mold is opened; and bed die and die cap scribble dusty material; cover die cap and firm being fixed on the bed die then, so that make the upper surface acquisition of ingot bar and the protection of its same way as that other surface obtained.

Be protected and separate bed die and die cap again after the ingot bar sclerosis of net and the moulding.

Claims (13)

1, packaged bulk (18) permanent adhesive materials surface scribbles dusty material particle (19), so that in the process that take out from mold in accumulating or the still packed article of this among mold, prevent itself and another packed article adhesion or be stained with a kind of packing method of impurity, this method is included in mold (1,2,36) this permanent adhesive materials of casting is so that make the stage of this packed article moulding in, at pouring operation (10,42) before, total inner surface at mold forms a dusty material net (9,39), it is characterized in that: this net keeps adhesion in whole casting cycle, so that make the particle of dusty material keep tacky state each other, this dusty material net is formed by electrostatic methods and keeps adhering; After sclerosis and moulding, packed article is taken out from mold, the original all surface relative with the mold inside face of this packed article all protected by this dusty material net.

2, desired method in the claim 1, it is characterized in that: by complete symmetry and around two parts (3 of hinged of its common axis (14), 4) before the middle casting of the mold of Zu Chenging (1) permanent adhesive materials, on the total inner surface of each part (3,4), form net (9) with static; The casting permanent adhesive materials till forming the surface (11) equal with the end face of each die cavity, uses electrostatic methods equally in the die cavity (6,7) of each part (3,4), keeps the adhesion of this net in whole casting cycle; Make two packaged half ingot bar (23,33) coolings in die cavity (6,7), holding respectively; Lift two parts of mold, the surface that does not add protection (11) of two half packaged ingot bars is in contact with one another; These two half packaged ingot bar are bonded together; At this moment the assembly of being made up of two parts (3,4) of mold is tilted; Two parts of mold are separated; At last the packed article (18) of particulate (19) is intactly taken out from mold.

3, desired method in the claim 1, it is characterized in that: before the permanent adhesive materials of in a mold (39) of forming by some die cavitys (37), casting, form net (39) with electrostatic methods in the total inner surface of each die cavity (37), the permanent adhesive materials of in each die cavity, casting, till forming the surface (43) equal with the end face of each die cavity, the same method of static of using is in whole casting cycle, this net is adhered on the wall of die cavity, make foundry goods (46) cooling of holding in this die cavity, each foundry goods (46) constitutes half packaged ingot bar; The foundry goods of casting in the same manner (46) is also arranged in the die cavity of second mold, and the surface that does not add protection (43) that makes each constitute the foundry goods (46) of half packaged ingot bar is in contact with one another; Exert pressure to these two molds all relative half packaged ingot bars are bonded together in couples; The packaged ingot bar of particulate (19) is fully taken out from mold.

4, desired method in the claim 2 and 3 is characterized in that: making before the surface (1,43) that does not add protection contacts with each other, handle this top layer, surface and make the metamorphosis of cast material surface portion.

5, desired method in the claim 1 is characterized in that: permanent adhesive materials is cast in the mold (2) of opened upper end; Before after sclerosis and from mold, taking out; upper surface for the basic horizontal of the packed article of protecting moulding; spread to be same as or to be different from the particle of the dusty material of the net (9) between mold (2) inside face and the packed article apparent surface, perhaps at this upper surface (11) sloshing property fluent material at this upper surface (10).

6, one of claim 1 to 3 or 5 desired methods is characterized in that: the overlapping several layers dusty material particle of net (9,39) and obtaining, if necessary, the several layers of its outermost can be reclaimed after packed article is taken out from mold.

7, one of claim 1 to 3 or 5 desired methods is characterized in that: must add filler in particular cases in permanent adhesive materials, the material that constitutes dusty material net (9,39) is the part of filler; Or composition in the ideal formulations, for example antioxidant or fire retardant is all or part of.

8; the device of one of enforcement of rights requirement 1 to 7 desired method; comprise casting permanent adhesive materials (10; 42) and make a mold (1 of the packed article moulding that this permanent adhesive materials makes; 2; 36); it is characterized in that: this mold has dusty material net (9 of formation on this mold total inner surface; 39) device (4; 40); make the positively charged device of each particle of dusty material in order on this mold total inner surface, to form the dusty material net; make this mold ground connection; thereby in whole casting cycle, make the dusty material net keep the device (8) of adhesion with electrostatic methods; and packed article taken out from mold, thereby the device that original relative with this mold inside face all surface is protected by this dusty material net.

9, the desired device of claim 8, it is characterized in that: this mold (1) is made up of at least two parts, be called bed die (3) and die cap (4) respectively, form dusty material net (9) and keep its adhesion on this two-part each total inner surface, these two parts respectively hold a permanent adhesive materials foundry goods (10).

10, the desired device of claim 8 is characterized in that: this mold (36) is made up of some die cavitys (37), and each die cavity all is used for holding a foundry goods as packaged half ingot bar (46).

11, claim 9 or 10 desired devices, it is characterized in that: this device has the two parts (3,4 that make this mold, 37) draw close, thereby make the upper surface (11 of each half packaged ingot bar (23,33,46) of moulding in these two parts of this mold, 43) device (14 that is in contact with one another, 34,35,50,51), and the device that these two half packaged ingot bar tightly are bonded together.

12; claim 8 is desired; more particularly being used for enforcement of rights requires the device of 5 desired methods; it is characterized in that: this device has the mold (2) of an opened upper end; on this mold total inner surface, form a dusty material net (19); and make this net keep adhering to the device (18) there; when making this dusty material net keep adhesion; the device (10) of casting permanent adhesive materials in this mold; for the upper surface (11) of the basic horizontal of the packed article of protecting moulding and spread with dusty material particle (27); the perhaps device of sloshing property fluent material, an and device that the packed article (13) that so fully protects takes out from this mold.

13, the desired device of claim 8; it is characterized in that: this mold is made up of die cap two parts of bed die peace; on this two-part total inner surface, all protect with the dusty material net; this net forms by the electrostatic methods deposition and keeps adhering; this bed die of this mold is the whole ingot bar that is used for holding permanent adhesive materials; this ingot bar can be worked as this mold and be formed by gravity casting when being in opening-wide state, perhaps also can work as this mold when closed, makes with preesure-poured method.

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