CN102802914A

CN102802914A - Receptacle manufacturing

Info

Publication number: CN102802914A
Application number: CN2010800378373A
Authority: CN
Inventors: A.J.贝克; A.W.多布迈尔; A.埃勒; P.格明德; P.格劳尔; M.豪亚拉; M.B.奥尔布里奇; P.E.德尔巴勒
Original assignee: TI Automotive Technology Center GmbH
Current assignee: TI Automotive Technology Center GmbH
Priority date: 2009-06-25
Filing date: 2010-06-25
Publication date: 2012-11-28
Anticipated expiration: 2030-06-25
Also published as: WO2010151724A3; BRPI1015116A2; JP2012531334A; BR122020003472B1; BR122020003478B1; WO2010151724A2; BRPI1015116B1; KR101812523B1; JP5667179B2; CN102802914B; KR20120111720A

Abstract

A method of manufacturing a product, including extruding a parison, and separating the parison into parison halves by cutting a partially expanded parison or by pulling apart a longitudinally weakened parison, and forming the parison halves against corresponding mold halves. The method may also include applying a film against the parison halves and/or the mold halves, and forming the film and parison halves against the mold halves to produce multi-layer product halves. Apparatuses for performing the method are also disclosed.

Description

Container is made

Technical field

The present invention relates to a kind of method of producing plastic containers on the whole, relates more specifically to a kind of molding process of plastic product.

Background technology

Blow molding is a kind of method of knowing of producing multiple plastic product, particularly container or comprising the hollow vessel of fuel tank, reservoir etc.Generally speaking, the typical blow molding process of multilayer fuel tank comprises a multilayer tubular parison is squeezed in the mould of opening around expander bar and inflatable bar.The expander bar launches so that the pattern of fever base radially stretches towards mould half.Mould half is closed together around the parison that stretches, and inflatable bar is to parison internal spray gas-pressurized, so that the inner surface of parison and mould half is consistent.Simultaneously, carriage and various fuel system member can carry and be molded in the appropriate location by inflatable bar like fuel quantity sensor, ventilation unit, petrolift, fuel filter etc.But it possibly be difficult during blowing forms, in fuel tank, settling said member, because only just be attached to the inner surface of molded fuel tank at mould closes and parison said member after the mould half form.

Equally, fuel tank often can comprise that through blowing the multilayer parison of the extruding of a plurality of structure block pieces and tack coat produces.But extruding needs the dedicated extruded equipment of the fixed qty parison layer of production fixed dimension and fastened configuration usually.The flexibility of therefore, producing the fuel tank of the layer with varying number, size and configuration is restricted.

Summary of the invention

In an embodiment of the method for optimizing that manufactures a product at present, parison is extruded and is positioned in the mould with mould half, and the upper and lower part of said parison subsides with the inside of the sealing that limits said parison.In addition, said mould part closure is to leave the gap between said mould half, and the sealed inside of gas-pressurized the said parison of introducing is with the said parison of demi-inflation.Equally, the parison of said demi-inflation is cut into two halves along the gap between the said mould half.

According to another embodiment; The manufacturing approach of product comprises that extruding one parison is to comprise the weakening part of longitudinal extension; The opposed anchor clamps that are utilized on the opposite side of weakening part come the said parison of clamping, and the said opposed anchor clamps of withdrawing are to tear said parison to limit parison half.

According to another embodiment, the manufacturing approach of product comprises extruding one parison, with said parison in two, and said parison partly is placed between the mould half of mould.Said method comprises that also against said parison half or mould half at least one applies film, and partly forms film and parison half against said mould, with production multilayer fuel tank partly.

According to another embodiment, the manufacturing equipment of product comprises the extruder of extruded parison; Mould with mould half; Said parison upper and lower part is subsided with the pliers of the inside of the sealing that limits said parison.Said equipment also comprises said parison is placed on the anchor clamps in the said mould, and wherein said mould part ground is closed between said mould half, reserving the gap, and the inside of sealing that gas-pressurized is introduced into said parison is so that said parison swell.Said equipment also comprises the cutting tool that the parison that expands is cut into two halves along the gap between the said mould half.

According to another embodiment, the manufacturing equipment of product comprises extruder, and it pushes a parison to comprise the part of vertical reduction; And opposed anchor clamps, it advances with the said parison of clamping on the opposite side of the part of said reduction, and withdrawal is to tear said parison to limit parison half.

Description of drawings

Below with reference to accompanying drawings exemplary embodiment and best mode are at length explained, among the figure:

Fig. 1 is the longitudinal sectional drawing of the exemplary embodiment of apparatus for blow moulding;

Fig. 2 is that it describes out unexpanded parison with dotted line, describes out the parison of demi-inflation with solid line along the profile of the line 2-2 intercepting of Fig. 1;

Fig. 3 is the amplification segment figure of the apparatus for blow moulding part of Fig. 1, and it describes out the closed upper and lower part of upper and lower parison anchor clamps clamping parison;

Fig. 4 is the profile of the apparatus for blow moulding of Fig. 1, the parison cutting tool that it is described out parison, the blow needle of complete expansion and is used for parison is cut into two halves;

Fig. 4 A is the amplification segment figure of the part of equipment shown in Fig. 4;

Fig. 5 is the profile of the apparatus for blow moulding of Fig. 1, and it describes out the carriage between the mould half that is positioned at the fuel system member and opens;

Fig. 6 is the transverse cross-sectional view of apparatus for blow moulding shown in Fig. 5, and it is closed together around fuel system member and carriage that it describes out mould half;

Fig. 6 A is the longitudinal sectional drawing of the equipment of Fig. 1, and it is described out mould and partly is separated the clout to open mould and to remove moulded product;

Fig. 7 is the vertical view of another exemplary embodiment of apparatus for blow moulding, and it illustrates the parison and the anchor clamps that keep said parison of extruding;

Fig. 8 is the enlarged drawing of the equipment part of Fig. 7;

Fig. 9 is the vertical view of the equipment of Fig. 7, and it is described out parison and is divided into two halves and moving towards corresponding mould half by anchor clamps;

Figure 10 is the profile of equipment shown in Fig. 9, and it is described out parison separately and contacts with half formation of said mould;

Figure 11 is the profile of equipment shown in Figure 10, and it illustrates the mould semi-closed together so that said parison half-phase is together bonding mutually;

Figure 12 is the vertical view of the another exemplary embodiment of apparatus for blow moulding, and it is described out the two halves that separate of extruded parison and material membrane is placed on the additional clamp group between the mould half;

Figure 13 is the profile of the equipment shown in Figure 12, and it is described out the said parison that separates half and forms with said mould half and contact, and corresponding film contacts in the inboard formation partly of said parison with said parison half;

Figure 14 is the profile of equipment shown in Figure 13, and it describes out said mould semi-closed together so that said film is bonding each other;

Figure 15 is the profile of a replaceable configuration of equipment shown in Figure 13, and it is described membrane and contacts with the die side formation of said mould half at said parison half;

Figure 16 is the profile of equipment shown in Figure 15, and it describes out said mould semi-closed together so that said parison half-phase is bonding mutually;

Figure 17 is the profile of a replaceable configuration of equipment shown in Figure 13, and it describes out the interior side contacts said parison half of internal membrane at said parison half, and inner membrance contacts with the die side formation of said mould half at said parison half; And

Figure 18 is the profile of equipment shown in Figure 15, and it describes out said mould semi-closed together so that said inner membrance is bonding each other.

The specific embodiment

In more detail referring to accompanying drawing; Fig. 1 describes out the exemplary embodiment of mould former 20; It can be used to implement the method for manufacturing single or multiple lift plastic product of the present disclosure (for example plastic fuel tank), during the manufacturing of said product, can one or more members be introduced said product.Following description of equipment only provides the brief overview of an example devices, but the miscellaneous equipment that does not illustrate here can be supported current disclosed method equally.

Generally speaking; Equipment 20 can comprise the extruder 22 that is used to produce parison 24, and the mould 26 of blow molding and/or deep drawn machine is so that parison 24 forms product, for example fuel tank (not shown); And said mould comprises relative substantially mould half 26a, 26b.As used here, term " mould half " can comprise single member or multi-component assemblies.In other words, each

mould half

26a, 26b can comprise a plurality of mold components that constitute the formation surface.Extruder 22 can be set directly at mould 26 tops, or if necessary can be spaced with mould 26.Equally, robot (not illustrating separately) can be positioned near extruder 22 and the mould 26, and anchor clamps 28a above and/or under can comprising, 28b transports parison 24 with clamping parison 24 and self compaction machine 22 to mould 26.Anchor

clamps

28a, 28b can be vacuum fixtures.Equipment 20 can also comprise and be used for blowing bar 30 with what gas-pressurized was introduced parison 24, and is used to expander 32 that parison 24 is radially outward stretched.Generally speaking, extruder, molded or stretching-machine, anchor clamps, expander and to blow bar all be that its 26S Proteasome Structure and Function is equipment well known to those of ordinary skill in the art, thereby do not go through here will concentrate on the disclosure.An exemplary embodiment of disclosure method can be implemented like equipment 20 through adopting any suitable equipment.

Parison can be pressed through extruding or co-extrusion and produced with any known mode, and said parison can be transported to mould by anchor clamps.For example, extruder 22 can extruded parison 24, and above and/or under

anchor clamps

28a, 28b can be transported to mould 26 with parison 24.Parison 24 can be by thermoplastic, and like high density polyethylene (HDPE) (HDPE), or polyester fiber constitutes, or can be made up of thermosetting plastic.Parison 24 can constitute has or does not have one or more for example ethenol copolymers (EVOH) or polyamide barrier layer, stops that fuel vapour diffuses through the fuel tank that will form.As used here, term " parison " can comprise the shaping workpiece of soft heat, it has the plastic material that one deck is at least pushed out by extruding or co-extrusion press.As used here, term " extruding " comprises the extruding of individual layer parison or the co-extrusion pressure of multilayer parison.

The parison 24 of extruding can be introduced into or be positioned in the mould 26, and can be through inserting the longitudinal axis extending transversely or the expansion of the inner expander 32 relative parisons 24 of parison 24, and is as shown in Figure 2.For example, in parison 24 is placed on mould 26 after, expander 32 can be from following introducing parison 24.This expander 32 can comprise fixing core with two or more laterally movably the expansion refer to.Mobile expansion is instigated separately, and this moves and can parison 24 be pulled into elongated ellipse.Fixing core can comprise and blow bar 30, and this core can be used to stop the central area of the relative wall part of parison 24 to be in contact with one another and to fuse together.If necessary, expansion refers to can remain in the parison 24 in forming process.If necessary, the contiguous material that refers to of expanding can separate with the fuel tank that forms and recycle afterwards.

Can for example through the upper and lower part of pushing or clamp parison 24 said upper and lower part be subsided with pliers.For example, pliers can be

anchor clamps

28a, and 28b itself is of Fig. 3.In another embodiment, pliers can comprise other in groups anchor clamps, arm, blade or any other extruding or clamp the suitable equipment of said parison part.The part of subsiding of parison 24 can limit the inside of the sealing of parison 24.

Equally, as shown in Figure 2, parison 24 can partly expand, as through with gas-pressurized via the sealed inside that bar 30 is introduced parisons 24 of blowing in expander 32 cores.Parison 24 can partly be expanded to the part of its final volume, and for example roughly 20% to 40% of its final volume.Can take any suitable malleation to come partly inflated parison 24, for example about 0 to 3 crust (0-43 pound/square inch), or cling to according to embodiment more specifically 2 to 3.

Of Fig. 2 and Fig. 3, mould 26 is can be partly closed or move but not exclusively closed towards closing position, so as before mould 26 to be closed fully at mould half 26a, keep 20 to 70mm gap 34 according to appointment between the 26b.Mould 26 can before parison 24 demi-inflations, afterwards or during partly closed with any suitable method.For example, the spacer block (not shown) can advance to mould

half

26a, 26b, make-up machine platen (not shown), mould half 26a, the position between the part of facing of mould rack between 26b and the said platen or base (not shown) etc.This layout provides a kind of positive " hard stop " to limit gap 34.Can adopt any other suitable layout to limit said gap 34, for example be integrated in the hard stop in the make-up machine closing device (not shown), or be programmed in " soft stop " in the shaping machine controller etc.

Still referring to Fig. 2, equipment 20 can comprise that the guard shield 33 that is supported on mould 26 outsides is 34 to blow out through the gap when mould 26 prevents parison 24 when only part is closed during parison 24 demi-inflations.For example, guard shield 33 can comprise relative panel or

plate

35a, and 35b is along mould half 26a, and the side of 26b is supported slidably.

Relative plate

35a, 35b can be through advancing like actuator 35c or withdrawing relative to each

other.Plate

35a, 35b can advance to and mutually combine or against with closed gap 34.Can adopt any suitable actuator 35c, like hydraulic pressure, air pressure or electromechanical actuator.As shown in Figure 2, guard shield 33 can be along vertical side setting of mould 26, but top and/or bottom that other guard shield also can be close to mould 26 from same or analogous purpose are provided with.

Referring to Fig. 3, cutting tool 29 part above and/or under removal parison 24 above and/or under equipment 20 can also comprise.Cutting tool 29 can comprise for example blade, cutter, laser instrument and/or hot wire, or other suitable cutting tool.Equally, can provide any suitable actuator 31 to advance and the cutting tool 29 of withdrawing, like hydraulic pressure, air pressure or electromechanical actuator.Part can be removed in suitable any above and/or under the parison 24, as type bad 24 is configured as begin to take shape product 50 during or (Fig. 4) afterwards.

Such as; As shown in Figure 4; The parison 24 of demi-inflation (Fig. 2 and Fig. 3) can further be shaped in mould 26; For example through via blowing bar 30 or blow needle 30 ' or inside that the two introduces parison 24 with gas-pressurized, and/or through for example via mould half 26a, the vacuum passage (not shown) among the 26b applies vacuum to the outside of parison 24.In one embodiment; Parison 24 can expand with the for example pressure of about 3 crust (43 pounds/square inch) through blowing bar 30; Blow needle 30 ' can pass through blow mold half 26a; A quilt among the 26b laterally promotes the wall through the parison 24 of demi-inflation, and can further expand with the for example extra pressure of about 1.5 crust (21-22 pound/square inch) in the inside of the parison 24 that expands.Can apply any suitable pressure, for example 3 to 10 the crust (43-145 pound/square inch) up to mould

half

26a, 26b by parison 24 form fit fill up.This pressure can keep suitable duration in the incipient stage at least, and 15 to 25 seconds according to appointment, the product 50 that begins to take shape with production, but the product 50 of avoiding sub-cooled to begin to take shape were so that interior surface thereof keeps temperature and viscosity.In one example, can adopt two blow needles 30 '.

Referring to Fig. 4, the product 50 that begins to take shape can be cut in the gap 34 between the 26b at mould half 26a again.For example, the part that is projected into outside mould 26 tie lines (pinch line) of the remainder of the parison 24 of expansion or the product 50 that begins to take shape can be by for example blade, cutter, laser instrument and/or hot wire, or any other suitable cutting tool cutting.Can use any suitable actuator 37 with along the plate 35a of mould 26, move cutting tool 36 between the 35b at guard shield 33.Therefore,

guard shield plate

35a, 35b can withdraw to allow cutting tool 36 to get into the gap 34 between the mould half.In another embodiment,

plate

35a, 35b can as far as possible closely advance, and still allows cutting tool 36 outstanding betwixt at least in part simultaneously.In the embodiment of back, can between the relative guard shield half of guard shield 33, limit the chamber 39 of sealing at this, and can in chamber 39, provide gas-pressurized to prevent that parison 24 from through plate 35a, blowing out between the 35b.Under any circumstance, the plate 35a that advances, the degree of closeness of 35b in the face of part can be enough with prevent parison 24 blown through.Cutting operation can be after parison 24 demi-inflation but is carried out before the complete expansion, or the pressure during formation begins to take shape product 50 keep during or carry out afterwards.In other words, said cutting operation can carry out at any suitable time point of said technology.

As shown in Figure 5, can open mould 26, parison half 24a of the parison 24 that wherein expands, 24b remains on its corresponding mould half 26a, among the 26b.In one example,

parison half

24a, 24b can remain in the mould 26 through the anchor clamps (not shown).In another example,

parison half

24a, 24b can pass through parison half 24a, and undercutting around the 24b or groove or pin (not shown) remain in the mould 26.In another example,

parison half

24a, 24b can be through via being positioned at mould half 24a, among the 24b or the vacuum that applies of vacuum hole (not shown) on every side remain in the mould 26.

Generally speaking, member can be introduced into mould 26 with in the moulded product that is placed on completion.For example, one or

more members

40,42,44,46 can collective be arranged on the carriage 38, are incorporated in the mould 26 and are connected to

parison half

24a, 24 and/or another one.For example, adopt robot and anchor clamps (not shown) can one or more members be placed to and one or two parison half 24a, the inner surface of 24b or wall contact make said member be attached to said wall.In another example, member can be located by loosely, so that they are not attached to parison half 24a, the wall of 24b.Such member can comprise fuel quantity sensor, ventilation unit, petrolift, fuel filter; Wherein a plurality of members can be installed on public carriage 38 and the support component 48 in advance; This support component can reach the isolated zone of fuel tank, like one or more folding corner regions.One example of this type utility bracket is disclosed in the U.S. Patent application No.12/562 that the name of submitting on September 19th, 2009 is called " fuel tank support "; In 266 (lawyer's document number is 2681.3322.001), it is transferred the application's assignee and is combined in this application to quote its whole form.After one or more members were fixed to the fuel tank inboard, robot can move away mould 26.

As shown in Figure 6, mould 26 can be closed, so that parison half 24a of heat still, 24b tie lines along its respective edges or edge and fuses each other to limit moulded product 150.If necessary, can adopt the heater (not shown) to strengthen the fusion on this edge or limit.

The inside of moulded product 150 can be through blow needle 30 ' pressurization to produce the net shape and/or the suitable cooling molded product 150 of moulded product 150.For example, product 150 can be forced into about 6 to 20 crust (86-290 pound/square inch) or, more specifically about 8 to 10 cling to (115-145 pound/square inch).The inside of product 150 then can be ventilated, blow needle 30 ' withdrawal.

Mould 26 can be opened then, and moulded product 150 can be removed from mould 26, and and then moulded product 150 can simultaneously or remove its clout (flash) 151, is passed to the destination, downstream afterwards.For example, fuel tank 150 can be arranged and remove clout automatically through deflashing in any suitable mold, shown in Fig. 6 A.Therefore, cutting tool 29 and/or 36 is removed clout the finished product that need not further to remove clout can be provided in mould.

Referring to Fig. 7 to Figure 11, another exemplary embodiment of disclosure method can be implemented through adopting any suitable equipment on the whole, and here is disclosed as and combines an example devices 220 to implement.This embodiment is similar with the embodiment of Fig. 1 to Fig. 6 aspect a lot, and identical Reference numeral is represented identical or corresponding element usually between the said embodiment in said several accompanying drawings.Therefore, aforementioned description its integral body by reference is combined in the following description, and is as the same on the contrary.In addition, possibly no longer repeat for being described in here of common theme.

Like Fig. 7 and shown in Figure 8, parison 224 can be pressed through extruding and co-extrusion and made forming the weakening part 225a of two longitudinal extensions, 225b, and it can be relative on diametric(al).In one embodiment, weakening part comprises recess or thin-walled part, and it can be along the whole length longitudinal extension of parison 224.Shown in Fig. 8 the best, weakening part 225a, 225b can be along inner surface, outer surfaces, or the two formation.For example, referring to Fig. 1, squeezer 22 can comprise having corresponding to concavity weakening part 225a, the nozzle 23 of the convex prominent features (not shown) of 225b (Fig. 8).In another example of this embodiment, the convex prominent features can be arranged on the downstream of nozzle 23, for example on the ring that is installed on nozzle 23.(not shown) in another embodiment, weakening part can be the hole of longitudinal extension, it can form through the spoke wheel at squeezer nozzle 23 places.(not shown) in another embodiment, weakening part can be the portions cut of longitudinal extension, it does not pierce through the wall of parison 224.This portions cut can form through the rotating knife such as the Piza cutter at squeezer nozzle 23 places.

Under any circumstance, parison 224 then can through Fig. 1

transport anchor clamps

28a, 28b is transported to the mould of opening 226 among Fig. 7.But transporting

anchor clamps

28a, 28b (Fig. 1) unclamps before the parison 224, like Fig. 7 and shown in Figure 8; Be arranged on the relative modular fixture 252a at mould 226 places; 252b can advance to be close to weakening part 225a, and 225b engages parison 224 at weakening part 225a on the opposite side of 226b.Anchor

clamps

252a, 252b can be vacuum fixtures, or the anchor clamps of any other suitable type.Parison 224 can pass through relative modular fixture 252a, and mould half 226a that 252b is introduced into the mould of opening 226 and is positioned to open is between the 226b.

Relative modular fixture 252a; 252b can withdraw or draw back each other; With with parison 224 along weakening part 225a; The 225b branch is opened or is torn in two, so that half 224a of the parison that for example separates can be kept by at least one group of anchor clamps 252a, and second half 224b is kept by at least one group of relative anchor clamps 252b.Can adopt the anchor clamps of any right quantity, size and configuration.As used here, term " anchor clamps " comprises that parison 224 is retained to enough degree separates parisons half 224a, any member of 224b with permission from whole parison 224.

Referring to Fig. 9, parison half 224a that separates, 224b be against mould half 226a, and the 226b location forms parison half 226a with at mould half 226a on the respective external of 226b, being sealed and matched of the outside of 226b.For example,

anchor clamps

252a, 252b can continue withdrawal, and can or move with against

mould half

226a, and 226b opens location, surface parison half 224a, 224b.Shown in figure 10,

parison half

226a, 226b and mould half 226a, the space 227a between the 226b, 227b then can be vacuumized with against mould half 226a, and suction of the sunk surface of 226b or vacuum form two

fuel tank half

228a, 228b.

Can be with one or more single members, or a plurality of member 40-46 that collectively is arranged on the carriage 38 introduces mould 226 and is connected to fuel tank half 228a of new formation, on one or two among the 228b.Shown in figure 11, mould 226 then can closure so that

fuel tank half

228a, 228b fuses along its respective edges each other, and member and/or carriage remain between the fuel tank half.Mould 226 can be opened, and mold formed fuel tank 250 can be removed.

Referring to Figure 12 to Figure 16, the another exemplary embodiment of disclosure method can adopt any suitable equipment to implement on the whole, can implement with equipment 320 and with two method embodiment recited above particularly.This embodiment is similar with the embodiment of Fig. 1 to Figure 11 aspect a lot, and identical Reference numeral is represented identical or corresponding element usually between the said embodiment in said several accompanying drawings.Therefore, aforementioned description its integral body by reference is combined in the following description, and is as the same on the contrary.In addition, possibly no longer repeat for being described in here of common theme.

At first, of Figure 12, film 352 can be positioned at and be positioned at mould half 326a in the mould 326, between the 326b.According to an example, film 352 can comprise diaphragm, coating film, membrane coat etc.For example; The volume 354 of film 352 can be arranged on mould half 326a, on the top of the upper end of 326b or its, and the relative anchor clamps of film in groups 356a; 356b can clamping from the appropriate section of the film 352 of film volume 354 and with film 352 to being pulled down to mould half 326a; The position of the lower end of 326b or below, lower end is to be positioned at film 352 in each mould of

opening half

326a, 326b the place ahead.

In one embodiment, shown in figure 12, film 352 can be positioned at parison half 324a separately, the inboard of 324b, and against

parison half

324a, 324b inner surface location or placement.

Interior parison half

324a, 324b can be separated from each other in any suitable manner, for example cuts or tears.Then,

parison half

324a, 324b and mould half 326a, the space 327a between the 326b, 327b are vacuumized with against mould half 226a, and suction of the sunk surface of 226b or vacuum form two

fuel tank half

324a, and 324b is shown in figure 13.Then, mould 320 can be closed so that new fuel tank half 328a that forms, 328b fuses to form fuel tank 350 along its respective edges each other, and is shown in figure 14.As the variant of this embodiment, film can be a coating, and it can be to be sprayed on parison half 324a, on the 324b inner surface.As used here, term " applies " and comprises for example placement or spraying.Exemplary spraying can comprise any suitable polyvinyl alcohol, polyamide etc.In another embodiment, fuel tank half 328a of formation, 328b no matter whether film is arranged, can be in fluoridizing chemical reaction handles to provide stopping of permeating or to keep out with fluorine gas (fluoro-gas).

In another embodiment, of Figure 15, film can be against

mould half

326a, and 326b places, and according to the aspect of this embodiment, parison half 324a that separates, 324b then can place against the inner surface of film 352.According to the unshowned different aspect of this embodiment, parison can expand into film in the mould that partially opens and contact, and subsequently as preceding said along the gap cutting between the mould half with respect to Fig. 4 and Fig. 4 A.Shown in figure 15, the gap between film 352 and the mould half is vacuumized with against mould half 326a, and suction of the sunk surface of 326b or vacuum form two

fuel tank half

428a, and 428b is shown in figure 15.Subsequently, mould 326 can be closed so that new fuel tank half 428a that forms, 428b fuses to form fuel tank 450 along its respective edges each other, and is shown in figure 16.

In the described another embodiment of Figure 17, film 352,353 can be placed on parison half 524a, the inboard of 524b and the outside.For example, first group of film 352 can be against

mould half

326a, and 326b places, then parison half 524a; The contiguous first group of film 352 of 524b placed, and after this second group of film 353 can be against parison half 524a, and the inner surface of 524b is placed; With with parison half 524a, 524b is clipped between two groups of films 352,353.Subsequently, mould 326 can be closed so that new fuel tank half 528a that forms, 528b fuses along its respective edges each other, and is to form fuel tank 550, shown in figure 18.In this embodiment, first and second groups of films can have various structure layer configuration and/or can be made up of material different.Different film configuration and material will be discussed below.

The layer of any right quantity and configuration can be provided, comprise one or more tack coats (a), barrier layer (b) and/or structure sheaf (c).In one embodiment, film can be five layers or multilayer film more, and it has following basic configuration: c/a/b/a/c.In another embodiment, film can be three layers or multilayer film more, and it has following basic configuration: a/b/a.In another embodiment, film can be two-layer or multilayer film more, and it has following basic configuration: a/b, and its middle level a can be oriented half contact of its corresponding parison.Film can have the layer of any right quantity and can comprise the extra play of not describing here.

In one exemplary embodiment; Film 352; 353 can comprise multilayer film; It comprises tack coat (a), this tack coat can be oriented to two fuel tanks half in corresponding one contact so that the fuel tank of relatively hot partly melts tack coat at least in part with so that the good fusion of film to fuel tank half.The exemplary resin that is used for tack coat can comprise the maleic anhydride graft LLDPE.

Equally, multilayer film can comprise barrier layer (b), and it can be by from the heat melts of fuel tank half or do not melt the structural integrity with diaphragm.The exemplary resin that is used for the barrier layer can comprise ethenol copolymer (EVOH), polyoxyethylene methylene (POM), can comprise thermoplastic polyester fibrous elasticity body (TPE) or any other suitable thermoplastic polyester fibrous elasticity body of the HYTREL board thermoplastic polyester fibrous elasticity body that can buy from the E.I.Du Pont Company of the Delaware State.Another Exemplary barrier layers resin can comprise any amount of polyamide (PA) sill, and like PA12, fusing point is the PA6 that 195 ℃ to 200 ℃ PA6/6-6 copolymer or fusing point is 220 ℃ to 225 ℃.Another PA material can comprise MXD6, and it is semi-aromatic PA, can for example buy from advanced Polymer Company (Solvay Advanced Polymers) of Su Wei or Mitsubishi Gas Chemical Co., Ltd.Another PA material can comprise that PA and polyethylene mix, like mixture or alloy, and like the ORGALLOY board polymer that can buy from A Kema (Arkema) company, the ZYTEL board polymer that maybe can buy from E.I.Du Pont Company.In another embodiment, the barrier layer can comprise any suitable nano composite material, like nanoclay material or nano-tube material, to improve barrier properties.In another embodiment, the barrier layer can be EVOH and the ORGALLOY that can buy from Arkema The combination of FT-104.

In addition, multilayer film can comprise the structural integrity of structure sheaf (c) with reinforcing membrane.The exemplary resin that is used for structure sheaf can be the synthetic identical with extruded parison, like HDPE.The another exemplary resin that is used for the inner structure layer can comprise PE, PA or any other polymer, and their conduction form, its can through for example with their base resin and conductive filler or for example nanotube mix and obtain.Equally, structure sheaf and/or one or more other layer can be used as virgin material or provide from the grinding-material of producing again.

In one embodiment, structure sheaf (c) can not be a conductive layer, but can be made up of for example HDPE, and independent conductive material can exist with tenuinexinous form.

In the another embodiment of the structure sheaf (c) of multilayer film, structure sheaf can be made up of a kind of material, and said material is not bonded to the material of parison half between structure sheaf and parison half, to leave the space.In this embodiment, film can be on one's body the fusion of the tie lines place of the fuel tank that forms or otherwise being welded on certainly.For example, can use heated mold insert (not shown) improves material at the tie lines place temperature with together with film coalescence.Especially in this case, if the heated mold insert is the induction type heater, conducting polymer possibly be desirable.

In the another embodiment relevant with the last period, film can be provided as the single tunic that only comprises the barrier layer.In this embodiment, can barrier layer disposed between barrier layer and parison half, to leave the space.In this embodiment, the barrier layer monofilm can or otherwise be welded on himself in the fusion of the tie lines place of the fuel tank that forms.For example, can use heated mold insert (not shown) improves material at the tie lines place temperature with together with film coalescence.Especially in this case, if the heated mold insert is the induction type heater, conducting polymer possibly be desirable.

Though illustrate and described preferred embodiment, those of ordinary skills are easy to recognize being described as explanation but not for restriction proposes, and can carrying out various modifications and replacement and without departing from the spirit and scope of the present invention of front.For example, though fuel tank is described relatively, method and apparatus of the present disclosure can be used for any kind proper container.The present invention is limited following claim.

Claims

1. method that manufactures a product comprises:

Squeeze out a parison:

Said parison is positioned in the mould with mould half;

The upper and lower part of said parison is subsided to limit the sealed inside of said parison;

Partly closed said mould is to reserve the gap between said mould half;

The said sealed inside that gas-pressurized is introduced said parison is so that said parison swell;

In the closed mould of part, form the parison that expands to begin to take shape said product against said mould half; And

Gap along between the said mould half cuts into two halves with the said product that begins to take shape.

2. the described method of claim 1, wherein the gas-pressurized through further introducing rising pressure is partly to form said parison against said mould.

3. the described method of claim 2, the step of wherein said introducing gas-pressurized comprise that gas pressure reaches about 3 crust, and the said rising pressure that is used to begin to take shape said product reaches about 6 crust.

4. the described method of claim 1 also comprises:

Remove on the said parison or at least one of lower part.

5. the described method of claim 4, said removal step is implemented during the step that partly forms said inflated parison against said mould.

6. the described method of claim 1 also comprises:

Open the closed mould of said part;

Between said mould half, introduce one or more members;

Around the closed said mould of said one or more members, so that corresponding edge, said parison half edge fuses to form the product of fusion each other; And

Internal pressurization to the product of said fusion.

7. the described method of claim 6 also is included in after being positioned at said parison in the said mould along the direction transverse to the extruding longitudinal direction of said parison and stretches said parison.

8. the described method of claim 6, wherein said one or more members are attached to the madial wall of one or two fuel tank half.

9. the described method of claim 1 also comprises against said parison half or partly at least one of mould applying film.

10. method that manufactures a product comprises:

Push a parison to comprise the part of vertical reduction;

Utilize the opposite side clamping said parison of relative anchor clamps at said weakening part; And

Withdraw said relative anchor clamps said parison is torn to limit parison half.

11. the described method of claim 10 also comprises:

Utilize said relative anchor clamps that the corresponding mould of said parison half against said mould partly is positioned in the said mould;

Find time space between the said parison half-sum mould half forms the product half of said product with vacuum;

One or more members are introduced between the said mould half; And

Around said one or more members together, said parison half is fused each other along respective edges with said mould semi-closed.

12. the described method of claim 10 also comprises against at least one said parison half or partly at least one of mould applying film.

13. a method that manufactures a product comprises:

Push a parison;

With said parison in two;

Said parison partly is positioned between the mould half of mould;

Apply film against said parison half or partly at least one of mould; And

Partly form said film and parison half to produce multi-layered product half against said mould.

14. the described method of claim 13; Wherein said product half is through following formation; The space of finding time between the said mould half-sum parison half forms said multi-layered product half with vacuum, and with said mould semi-closed together, said multi-layered product half is fused each other along respective edges.

15. the described method of claim 13, wherein said product half be through following formation, together so that said product half fuses along respective edges each other, and the mould through gas-pressurized being introduced said closure partly with said mould semi-closed.

16. the described method of claim 13, wherein said film is located through clamping and the diaphragm that is deployed between the said mould half.

17. the described method of claim 13, wherein said film are only located against said parison half.

18. the described method of claim 13, wherein said film only are positioned between the said parison half-sum mould half.

19. the described method of claim 13, wherein said film are positioned to not only against said parison partly but also between said parison half-sum mould half.

20. the described method of claim 13, wherein said parison is separated through following steps:

Partly closed said mould is to reserve the gap between said mould half;

The said sealing content that gas-pressurized is introduced said parison is so that said parison demi-inflation; And

The parison of said demi-inflation is cut into two halves along the gap between the said mould half.

21. the described method of claim 13, wherein said parison separates through following steps:

Push said parison to comprise the part of vertical reduction;

Withdraw said relative anchor clamps said parison is torn to limit said parison half.

22. a product of being made by the described method of claim 13, wherein said film is constructed with at least one barrier layer and at least one tack coat.

23. the described product of claim 22, wherein said at least one barrier layer is made up of at least a in the following material: ethenol copolymer (EVOH), polyamide (PA) sill or nano composite material.

24. the described product of claim 23, wherein said polyamide based material comprises PA12, PA6, PA6/6,6 copolymers, MXD6, or at least a in PA and polyethylene mixture or the alloy.

25. the described product of claim 22, wherein said at least one tack coat is made up of the maleic anhydride graft LLDPE.

26. the said product of claim 22, wherein said film also is constructed with at least one structure sheaf.

27. the described product of claim 26, wherein said at least one structure sheaf is by pure or grind high-density polyethylene material again and constitute.

28. the described product of claim 26, wherein said at least one structure sheaf is made up of conducting polymer.

29. the described product of claim 26, wherein said at least one structure sheaf is made up of a kind of material, and said material is not bonded to said parison half between said at least one structure sheaf and its corresponding parison half, to leave the space.

30. the described product of claim 29, wherein said film is welded on self at the tie lines place of said product.

31. an equipment that is used to manufacture a product comprises:

The extruder of extruded parison;

Mould with mould half;

Said parison upper and lower part is subsided with the pliers of the sealed inside that limits said parison;

Said parison is positioned at the anchor clamps in the said mould, and wherein said mould part ground is closed between said mould half, reserving the gap, and the said sealed inside that gas-pressurized is introduced into said parison is with the said parison that expands; And

The parison of said expansion is cut into the cutting tool of two halves along the gap between the said mould half.

32. an equipment that is used to manufacture a product comprises:

Extruder, it pushes a parison to comprise the part of vertical reduction; And

Relative anchor clamps, said anchor clamps advance with the said parison of opposite side clamping at said weakening part, and withdrawal is to tear said parison to limit parison half.