CN102802914B

CN102802914B - Vessel fabrication

Info

Publication number: CN102802914B
Application number: CN201080037837.3A
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: 2016-01-20
Anticipated expiration: 2030-06-25
Also published as: WO2010151724A2; JP5667179B2; BRPI1015116B1; CN102802914A; BR122020003478B1; JP2012531334A; BR122020003472B1; KR101812523B1; WO2010151724A3; BRPI1015116A2; KR20120111720A

Abstract

The method manufactured a product, comprises extruding one parison; The parison expanded by cutting part or the parison longitudinally weakened is pulled open and described parison is divided into parison half; And partly form described parison half against corresponding mould.Described method can also comprise and partly applies film against described parison half and/or described mould; And partly form described film and parison half to produce multi-layered product partly against described mould.Also disclose the equipment performing described method.

Description

Vessel fabrication

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 known of the hollow vessels produced multiple plastic product, particularly container or comprise fuel tank, reservoir etc.Generally speaking, the typical blow molding process of multilayer fuel tank comprises in the mould being squeezed in around expander bar and inflatable bar by a multilayer tubular parison and opening.Expander bar launches that pattern of fever base is radially stretched towards mould half.Mould half is closed together around the parison stretched, and inflatable bar is to parison internal spray gas-pressurized, to make parison consistent with the interior surface of mould half.Meanwhile, bracket and various fuel system components, as fuel quantity sensor, ventilation unit, petrolift, fuel filter etc. can be carried by inflatable bar and be molded in appropriate location.But, between blowing Formation period, in fuel tank, settle described component may be difficult, because only to close and parison is just attached to the inner surface of molded fuel tank against described component after mould half form at mould.

Equally, fuel tank can comprise the multilayer parison of the extruding of multiple structure barrier part and tack coat and produce frequently by blowing.But extruding needs the dedicated extruded equipment of the fixed qty parison layer of production fixed dimension and fastened configuration usually.Therefore, produce the flexibility with the fuel tank of the layer of varying number, size and configuration to be restricted.

Summary of the invention

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

According to another embodiment, the manufacture method of product comprises extruding one parison to comprise weakening part extending longitudinally, utilize the opposed fixture on the opposite side of weakening part to clamp described parison, and described opposed fixture of retracting is to tear to limit parison half by described parison.

According to another embodiment, the manufacture method of product comprises extruding one parison, is split into two halves by described parison, and between the mould half described parison being partly placed on mould.Described method also comprises at least one the applying film against described parison half or mould half, and forms film and parison half, with production multilayer fuel tank half against described mould half.

According to another embodiment, the manufacturing equipment of product comprises the extruder of extruded parison; There is the mould of mould half; Described parison upper and lower part is made to subside the pliers of the inside of the sealing limiting described parison.Described equipment also comprises described parison placement fixture in the mold, close to reserve gap between described mould half, and gas-pressurized is introduced into the inside of the sealing of described parison to make described parison swell wherein said mould part.Described equipment also comprises the cutting tool parison of expansion being cut into two halves along the gap between described mould half.

According to another embodiment, the manufacturing equipment of product comprises extruder, and it extrudes a parison to comprise the part longitudinally weakened; And opposed fixture, it advances to clamp described parison on the opposite side of the part of described reduction, and retracts to be torn by described parison to limit parison half.

Accompanying drawing explanation

Below with reference to accompanying drawings exemplary embodiment and best mode are described in detail, in figure:

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

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

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

Fig. 4 is the profile of the apparatus for blow moulding of Fig. 1, and it describes out the parison, blow needle and the parison cutting tool for parison being cut into two halves that expand completely;

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

Fig. 5 is the profile of the apparatus for blow moulding of Fig. 1, and it describes out the bracket be positioned between fuel system components and the mould half opened;

Fig. 6 is the transverse cross-sectional view of apparatus for blow moulding shown in Fig. 5, its describe out mould half around fuel system components and bracket closed together;

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

Fig. 7 is the top view of another exemplary embodiment of apparatus for blow moulding, and it illustrates the parison of extruding and keeps the fixture of described parison;

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

Fig. 9 is the top view of the equipment of Fig. 7, and it describes out parison and is divided into two halves and is partly pulled towards corresponding mould by fixture;

Figure 10 is the profile of equipment shown in Fig. 9, and its parison described out separately is partly formed with described mould and contacts;

Figure 11 is the profile of equipment shown in Figure 10, and it illustrates mould semi-closed together mutually to be bonded together by described parison half;

Figure 12 is the top view of the another exemplary embodiment of apparatus for blow moulding, its two halves separated describing out extruded parison and the additional clamp group be placed on by material membrane between mould half;

Figure 13 is the profile of the equipment shown in Figure 12, its describe out described in the parison half that separates partly formed with described mould and contact, and corresponding film and described parison half are formed in described parison inner side partly and contact;

Figure 14 is the profile of equipment shown in Figure 13, and it describes out described mould semi-closed together mutually to be bonded by described film;

Figure 15 is the profile of a replaceable configuration of equipment shown in Figure 13, and it describes membrane and described mould half and is formed in the die side of described parison half and contact;

Figure 16 is the profile of equipment shown in Figure 15, and it describes out described mould semi-closed together mutually to be bonded by described parison half;

Figure 17 is the profile of a replaceable configuration of equipment shown in Figure 13, and it describes out internal membrane parison half described in the interior side contacts of described parison half, and inner membrance and described mould half are formed in described parison die side partly and contact; And

Figure 18 is the profile of equipment shown in Figure 15, and it describes out described mould semi-closed together mutually to be bonded by described inner membrance.

Detailed description of the invention

In more detail see accompanying drawing, Fig. 1 describes out the exemplary embodiment of mould former 20, it may be used for the method implementing manufacture single or multiple lift plastic product (such as plastic fuel tank) of the present disclosure, during the manufacture of described product, one or more component can be introduced described product.Description of equipment below only provides the brief overview of an example devices, but the miscellaneous equipment do not illustrated here can support current disclosed method equally.

Generally speaking, equipment 20 can comprise the extruder 22 for the production of parison 24, and the mould 26 of blow molding and/or deep drawn machine forms product to make parison 24, such as fuel tank (not shown), and described mould comprises mould half 26a relative substantially, 26b.As used herein, term " mould half " can comprise single component or multi-component assemblies.In other words, each mould half 26a, 26b can comprise the multiple mold components forming and form surface.Extruder 22 can be set directly at above mould 26, or if necessary can be spaced with mould 26.Equally, robot (not illustrating separately) can be positioned near extruder 22 and mould 26, and above and/or under can comprising, fixture 28a, 28b transport parison 24 to clamp parison 24 self compaction machine 22 to mould 26.Fixture 28a, 28b can be vacuum fixtures.Equipment 20 can also comprise and blows bar 30 for what gas-pressurized is introduced parison 24, and the expander 32 for making parison 24 radially outward stretch.Generally speaking, extruder, molded or stretching-machine, fixture, expander and to blow bar be all that its 26S Proteasome Structure and Function is equipment well known to those of ordinary skill in the art, thus do not discuss to concentrate on the disclosure here in detail.An exemplary embodiment of disclosure method can be passed through to adopt any suitable equipment, as equipment 20 is implemented.

Parison can be produced in any known fashion by extruding or co-extrusion pressure, and described parison can be transported to mould by fixture.Such as, extruder 22 can extruded parison 24, and above and/or under fixture 28a, 28b parison 24 can be transported to mould 26.Parison 24 can by thermoplastic, and as high density polyethylene (HDPE) (HDPE), or polyester fiber is formed, or can be made up of thermosetting plastic.Parison 24 can be configured to have or do not have one or more such as ethenol copolymer (EVOH) or polyamide barrier layer, stops that fuel vapour diffuses through the fuel tank that will be formed.As used herein, term " parison " can comprise the shaping workpiece of soft heat, its have at least one deck by the plastic material extruded or co-extrusion press squeezes out.As used herein, 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 mould 26, and can pass through longitudinal axis extending transversely or the expansion of the relative parison 24 of expander 32 that can insert parison 24 inside, as shown in Figure 2.Such as, after parison 24 is placed in mould 26, expander 32 can from introducing parison 24 below.The expansion that this expander 32 can comprise fixing core and two or more transverse movables refers to.Mobile expansion is instigated separately, and this moves and parison 24 can be pulled into elongated ellipse.Fixing core can comprise and blows bar 30, and this core may be used for stoping the central area of the opposed wall portion of parison 24 contact with each other and fuse together.If necessary, in forming process, expansion refers to can remain in parison 24.If necessary, the contiguous material referred to of expanding can separate with the fuel tank formed and recycle afterwards.

Can such as by extruding or clamp the upper and lower part of parison 24, described upper and lower part be subsided with pliers.Such as, pliers can be fixture 28a, 28b itself, as described in Figure 3.In another embodiment, pliers can comprise other fixtures in groups, arm, blade or other extruding any or clamp the suitable equipment of described parison sections.The collapsed portion 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 by by gas-pressurized via blowing the sealed inside that parison 24 introduced by bar 30 in expander 32 core.Parison 24 partly can be expanded to a part for its final volume, roughly 20% to 40% of such as its final volume.Any suitable malleation can be taked to carry out partly inflated parison 24, such as about 0 to 3 bar (0-43 pound/square inch), or cling to according to embodiment 2 to 3 more specifically.

As described in Fig. 2 and Fig. 3, mould 26 partly can close or move but not exclusively closed towards closing position, at mould half 26a before mould 26 is completely closed, to retain the gap 34 of 20 to 70mm according to appointment between 26b.Mould 26 can before parison 24 demi-inflation, afterwards or period partly close with any applicable method.Such as, spacer block (not shown) can advance to mould half 26a, 26b, forming machine platen (not shown), mould half 26a, the position between the part faced by the mould rack between 26b and described platen or base (not shown) etc.This layout provides a kind of " hard stop " actively to limit gap 34.Other suitable layout any can be adopted to limit described gap 34, such as, be integrated in the hard stop in forming machine closing device (not shown), or be programmed in " soft stop " in shaping machine controller etc.

Still see Fig. 2, equipment 20 can comprise be supported on guard shield 33 outside mould 26 with during parison 24 demi-inflation when mould 26 prevents parison 24 from blowing out through gap 34 when only part is closed.Such as, guard shield 33 can comprise relative panel or plate 35a, 35b along mould half 26a, and the side of 26b is slidably supported.Relative plate 35a, 35b can by advancing as actuator 35c or retracting relative to each other.Plate 35a, 35b can advance to and to be combined with each other or against with closed gap 34.Any suitable actuator 35c can be adopted, as hydraulic pressure, air pressure or electromechanical actuator.As shown in Figure 2, guard shield 33 can be arranged along longitudinal side of mould 26, but other guard shield also can be close to top and/or the bottom setting of mould 26 for same or analogous object.

See Fig. 3, above and/or under equipment 20 can also comprise, cutting tool 29 is to remove part above and/or under parison 24.Cutting tool 29 can comprise such as blade, cutter, laser instrument and/or hot wire, or other suitable cutting tool.Equally, any suitable actuator 31 can be provided to advance and retraction cutting tool 29, as hydraulic pressure, air pressure or electromechanical actuator.Above and/or under parison 24 part can any suitable in remove, as by type bad 24 be configured as begin to take shape product 50 during or afterwards (Fig. 4).

Such as, as shown in Figure 4, parison 24(Fig. 2 and Fig. 3 of demi-inflation) can be shaped further in mould 26, such as by via the inside of blowing bar 30 or blow needle 30 ' or the two and to be introduced by gas-pressurized parison 24, and/or pass through such as via mould half 26a, the vacuum passage (not shown) in 26b applies vacuum to the outside of parison 24.In one embodiment, parison 24 can expand with the pressure of such as about 3 bar (43 pounds/square inch) by blowing bar 30, blow needle 30 ' can pass through blow mold half 26a, one in the 26b wall being pushed laterally through the hole the parison 24 by demi-inflation, and can expand further with the extra pressure of such as about 1.5 bar (21-22 pound/square inch) in the inside of the parison 24 expanded.Can apply any suitable pressure, such as 3 to 10 bar (43-145 pound/square inch) are until mould half 26a, 26b are filled up by parison 24 form fit.This pressure at least can keep suitable duration in the incipient stage, 15 to 25 seconds according to appointment, to produce the product 50 begun to take shape, but the product 50 avoiding sub-cooled to begin to take shape, so that interior surface thereof keeps temperature and viscosity.In one example, two blow needles 30 ' can be adopted.

Again see Fig. 4, the product 50 begun to take shape at mould half 26a, can be cut in the gap 34 between 26b.Such as, the part outside mould 26 tie lines (pinchline) of being projected into of the remainder of the parison 24 of expansion or the product 50 that begins to take shape can by such as blade, cutter, laser instrument and/or hot wire, or other suitable cutting tool any cutting.Any suitable actuator 37 can be used with along the plate 35a of mould 26 at guard shield 33, mobile cutting tool 36 between 35b.Therefore, guard shield plate 35a, 35b can retract to allow cutting tool 36 to enter gap 34 between mould half.In another embodiment, plate 35a, 35b can advance as closely as possible, still allow cutting tool 36 to give prominence to betwixt at least in part simultaneously.At this in rear embodiment, the room 39 of sealing can be limited between the relative guard shield of guard shield 33 half, and gas-pressurized can be provided in room 39 to prevent parison 24 through plate 35a, blow out between 35b.Under any circumstance, the degree of closeness in the face of part of the plate 35a of advance, 35b can enough to prevent parison 24 to be blown through.Cutting operation carries out before can expanding after parison 24 demi-inflation but completely, or is being formed during the pressure begun to take shape during product 50 keeps or carrying out afterwards.In other words, described cutting operation can carry out at any suitable time point of described technique.

As shown in Figure 5, can open mould 26, parison half 24a of the parison 24 wherein expanded, 24b remain on its corresponding mould half 26a, in 26b.In one example, parison half 24a, 24b can be remained in mould 26 by fixture (not shown).In another example, parison half 24a, 24b can pass through parison half 24a, and the undercutting around 24b or groove or pin (not shown) remain in mould 26.In another example, parison half 24a, 24b can pass through via being positioned at mould half 26a, and the vacuum of vacuum hole (not shown) applying in 26b or around remains in mould 26.

Generally speaking, component can be introduced into mould 26 with in the moulded product be placed on.Such as, one or more component 40,42,44,46 can collective be arranged on bracket 38, to be incorporated in mould 26 and to be connected to parison half 24a, and 24 and/or another one.Such as, adopt robot and fixture (not shown) one or more component can be placed to and one or two parison half 24a, the inner surface of 24b or wall contact, make described attaching components to described wall.In another example, component can be located by loosely, so that they are not attached to parison half 24a, and the wall of 24b.Such component can comprise fuel quantity sensor, ventilation unit, petrolift, fuel filter, wherein multiple component can be pre-installed on public bracket 38 and support component 48, this support component can reach the isolated region of fuel tank, as one or more folding corner region.One example of this kind of utility bracket is disclosed in the U.S. Patent application No.12/562 that the name submitted on September 19th, 2009 is called " fuel tank support ", 266(lawyer's document number is 2681.3322.001) in, it is transferred to the assignee of the application and combines in this application with the form quoting its entirety.After one or more component is fixed to inside fuel tank, robot can move away mould 26.

As shown in Figure 6, mould 26 can close, so that still hot parison half 24a, 24b tie lines along its corresponding edge or edge and mutually fuses to limit moulded product 150.If necessary, heater (not shown) can be adopted to strengthen the fusion at this edge or limit.

Can be pressurizeed by blow needle 30 ' to produce the net shape of moulded product 150 and/or suitable cooling molded product 150 in the inside of moulded product 150.Such as, product 150 can be forced into about 6 to 20 bar (86-290 pound/square inch) or, more specifically about 8 to 10 bar (115-145 pound/square inch).The inside of product 150 then can be ventilated, and blow needle 30 ' is retracted.

Then mould 26 can be opened, and moulded product 150 can be removed from mould 26, and and then moulded product 150 simultaneously or can remove its clout (flash) 151, is passed to destination, downstream afterwards.Such as, fuel tank 150 can be arranged by deflashing in any suitable mould and automatically remove clout, as shown in Figure 6A.Therefore, cutting tool 29 and/or 36 with the finished product that can to provide together with clout without the need to removing clout is further provided in mould.

On the whole see Fig. 7 to Figure 11, another exemplary embodiment of disclosure method is implemented by adopting any suitable equipment, and is here disclosed as and implements in conjunction with an example devices 220.This embodiment is similar with the embodiment of Fig. 1 to Fig. 6 in a lot, and Reference numeral identical between described embodiment usually represents identical or corresponding element in described several accompanying drawing.Therefore, aforementioned being described through quotes its overall combination in the following description, vice versa.In addition, may no longer repeat here for being described in of common theme.

As shown in Figure 7 and Figure 8, parison 224 can manufacture to be formed two weakening part 225a extending longitudinally by extruding and co-extrusion pressure, and 225b, it can be relative in diametric(al).In one embodiment, weakening part comprises recess or thin-walled portion, and it can be extending longitudinally along the whole length of parison 224.As shown in Fig. 8 the best, weakening part 225a, 225b can along interior surface, outer surfaces, or the two is formed.Such as, see Fig. 1, squeezer 22 can comprise have corresponding to concavity weakening part 225a, 225b(Fig. 8) the nozzle 23 of convex prominent features (not shown).In another example of this embodiment, convex prominent features can be arranged on the downstream of nozzle 23, such as, on the ring being installed on nozzle 23.(not shown) in another embodiment, weakening part can be hole extending longitudinally, and it can be formed by the spoke wheel at squeezer nozzle 23 place.(not shown) in another embodiment, weakening part can be portions cut extending longitudinally, and it does not pierce through the wall of parison 224.This portions cut can be formed by the rotating knife of the such as pizza knife at squeezer nozzle 23 place.

Under any circumstance, parison 224 then can by the transport fixture 28a of Fig. 1, and 28b is transported to the mould 226 opened in Fig. 7.But at transport fixture 28a, 28b(Fig. 1) unclamp parison 224 before, as shown in Figure 7 and Figure 8, be arranged on the relative modular fixture 252a at mould 226 place, 252b can advance to be close to weakening part 225a, and 225b engages parison 224 on the opposite side of weakening part 225a, 226b.Fixture 252a, 252b can be vacuum fixtures, or the fixture of other suitable type any.Parison 224 can be introduced into by relative modular fixture 252a, 252b the mould 226 opened and be positioned mould half 226a that opens, between 226b.

Relative modular fixture 252a, 252b can retract or drawn apart from one another, with by parison 224 along weakening part 225a, 225b separates or tears in two, so that the half 224a of the parison such as separated can be kept by least one group of fixture 252a, and second half 224b is kept by least one group of relative fixture 252b.The fixture of any right quantity, size and configuration can be adopted.As used herein, term " fixture " comprises and parison 224 is retained to enough degree to allow to be separated parison half 224a from whole parison 224, any component of 224b.

See Fig. 9, parison half 224a separated, 224b with at mould half 226a, the respective external of 226b are formed parison half 224a against mould half 226a, 226b location, being sealed and matched of the outside of 224b.Such as, fixture 252a, 252b can continue to retract, and can or mobile to open location, surface parison half 224a, 224b against mould half 226a, 226b.As shown in Figure 10, parison half 224a, 224b and mould half 226a, the space 227a between 226b, 227b then can be evacuated to aspirate against the sunk surface of mould half 226a, 226b or vacuum forms two fuel tank half 228a, 228b.

Can by one or more single component, or multiple component 40-46 be collectively arranged on bracket 38 introduces mould 226 and is connected to new fuel tank half 228a formed, on one or two in 228b.As shown in figure 11, mould 226 then can close to make fuel tank half 228a, and 228b fuses mutually along its corresponding edge, and component and/or bracket remain between fuel tank half.Mould 226 can be opened, and mold formed fuel tank 250 can be removed.

On the whole see Figure 12 to Figure 16, the another exemplary embodiment of disclosure method can adopt any suitable equipment to implement, and can implement particularly together with equipment 320 with two embodiments of the method recited above.This embodiment is similar with the embodiment of Fig. 1 to Figure 11 in a lot, and Reference numeral identical between described embodiment usually represents identical or corresponding element in described several accompanying drawing.Therefore, aforementioned being described through quotes its overall combination in the following description, vice versa.In addition, may no longer repeat here for being described in of common theme.

First, as described in Figure 12, film 352 can be positioned in mould 326 and be positioned at mould half 326a, between 326b.According to an example, film 352 can comprise diaphragm, coating film, membrane coat etc.Such as, the volume 354 of film 352 can be arranged on mould half 326a, the top of the upper end of 326b or its on, the relative fixture of film in groups 356a, 356b can clamp the appropriate section from the film 352 of film volume 354 and be pulled down by film 352 to mould half 326a, position below the lower end of 326b or lower end, to be positioned at mould half 326a that each is opened, 326b front by film 352.

In one embodiment, as shown in figure 12, film 352 can be positioned at parison half 324a separately, the inner side 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, such as, cut or tear.Then, parison half 324a, 324b and mould half 326a, the space 327a between 326b, 327b are evacuated to aspirate against the sunk surface of mould half 326a, 326b or vacuum forms two fuel tank half 328a, 328b, as shown in figure 13.Then, mould 320 can close to make new fuel tank half 328a formed, and 328b fuses to form fuel tank 350 along its corresponding edge mutually, as shown in figure 14.As the variant of this embodiment, film can be coating, and it can be sprayed on parison half 324a, on 324b inner surface.As used herein, term " applying " comprises such as placement or spraying.Exemplary spraying can comprise any suitable polyvinyl alcohol, polyamide etc.In another embodiment, no matter whether fuel tank half 328a of formation, 328b, have film, can carry out processing to provide to the stop of permeating or keeping out with fluorine gas (fluoro-gas) in fluorochemical reaction.

In another embodiment, as described in Figure 15, film can be placed against mould half 326a, 326b, and according to an aspect of this embodiment, parison half 324a separated, 324b then can place against the inner surface of film 352.According to a unshowned different aspect of this embodiment, parison can expand into and contact with film in the mould partially opened, and subsequently as cut along the gap between mould half relative to as described in Fig. 4 and Fig. 4 A front.As shown in figure 15, the gap between film 352 and mould half is evacuated to aspirate against the sunk surface of mould half 326a, 326b or vacuum forms two fuel tank half 428a, 428b, as shown in figure 15.Subsequently, mould 326 can close to make new fuel tank half 428a formed, and 428b fuses to form fuel tank 450 along its corresponding edge mutually, as shown in figure 16.

In the another embodiment described in Figure 17, film 352,353 can be placed on parison half 524a, the inner side and outer side of 524b.Such as, first group of film 352 can be placed against mould half 326a, 326b, then parison half 524a, the contiguous first group of film 352 of 524b is placed, and after this second group of film 353 can be placed against the inner surface of parison half 524a, 524b, so that parison half 524a, 524b are clipped in two groups of films 352, between 353.Subsequently, mould 326 can close to make new fuel tank half 528a formed, and 528b fuses mutually along its corresponding edge, to form fuel tank 550, as shown in figure 18.In this embodiment, first and second groups of films can have different structure sheaf configurations and/or can be made up of different materials.Below by the different film configuration of discussion and material.

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

In one exemplary embodiment, film 352,353 can comprise multilayer film, it comprises tack coat (a), this tack coat can be oriented to and contact with one corresponding in two fuel tanks half, so that relatively hot fuel tank partly melts tack coat at least in part with so that film is to fuel tank good fusion partly.Exemplary resin for tack coat can comprise maleic anhydride grafted linear low density polyethylene.

Equally, multilayer film can comprise barrier layer (b), and it can by the heat melts or non-fusible with the structural integrity of diaphragm from fuel tank half.Exemplary resin for barrier layer can comprise ethenol copolymer (EVOH), polyoxyethylene methylene (POM), can comprise the HYTREL board Thermoplastic polyester fibers elastomeric Thermoplastic polyester fibers elastomer (TPE) or other suitable Thermoplastic polyester fibers's elastomer any 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, as PA12, and fusing point to be the PA6/6-6 copolymer of 195 DEG C to 200 DEG C or fusing point the be PA6 of 220 DEG C to 225 DEG C.Another PA material can comprise MXD6, and it is semi-aromatic PA, can such as buy from the advanced Polymer Company (SolvayAdvancedPolymers) of Su Wei or Mitsubishi Gas Chemical Co., Ltd.Another PA material can comprise PA and polyethylene mixing, as mixture or alloy, as the ORGALLOY board polymer can buied from A Kema (Arkema) company, or the ZYTEL board polymer can buied from E.I.Du Pont Company.In another embodiment, barrier layer can comprise any suitable nano composite material, as nanoclay material or nano-tube material, to improve barrier properties.In another embodiment, barrier layer can be EVOH and the ORGALLOY that can buy from Arkema ^?the combination of FT-104.

In addition, multilayer film can comprise structure sheaf (c) to strengthen the structural integrity of film.Exemplary resin for structure sheaf can be the synthetic identical with extruded parison, as HDPE.Another exemplary resin for inner structure layer can comprise PE, PA or other polymer any, and their Conducting forms, and it can by such as mixing their base resin with conductive filler or such as nanotube and obtaining.Equally, structure sheaf and/or other layer one or more can provide as virgin material or from the grinding-material again produced.

In one embodiment, structure sheaf (c) can not be conductive layer, but can be made up of such as 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 described material is not bonded to the material of parison half to leave space between structure sheaf and parison half.In this embodiment, film can with it the fusion of the tie lines place of the fuel tank formed or being otherwise welded on certainly.Such as, the mold insert (not shown) of heating can be used to improve the temperature of material at tie lines place with by film coalescence together.Especially in this case, if the mold insert of heating is induction type heater, conducting polymer may be desirable.

In the another embodiment relevant to the last period, film can be provided as the single tunic only comprising barrier layer.In this embodiment, can barrier layer disposed to leave space between barrier layer and parison half.In this embodiment, barrier layer monofilm in the fusion of the tie lines place of the fuel tank formed or otherwise can weld on itself.Such as, the mold insert (not shown) of heating can be used to improve the temperature of material at tie lines place with by film coalescence together.Especially in this case, if the mold insert of heating is induction type heater, conducting polymer may be desirable.

Although illustrate and describe preferred embodiment, those of ordinary skill in the art are easy to recognize being described as illustrating but not proposing for restriction above, and can carry out various amendment and replacement and without departing from the spirit and scope of the present invention.Such as, although fuel tank is described relatively, method and apparatus of the present disclosure may be used for the suitable container of any type.The present invention is limited by claim below.

Claims

1. the method manufactured a product, comprising:

Extrude a parison to comprise the part longitudinally weakened;

Relative fixture is utilized to clamp described parison at the opposite side of described weakening part; And

Retract described relative fixture to be torn to limit parison half along described weakening part by described parison.

2. method according to claim 1, also comprises:

Described relative fixture is utilized to be located in the mold by described parison half against the corresponding mould half of mould;

The space of finding time between described parison half-sum mould half forms the product half of described product with vacuum;

One or more component is introduced between described mould half; And

Around described one or more component by described mould semi-closed together, to make described parison half mutually fuse along corresponding edge.

3. method according to claim 1, also comprises at least one the applying film against described parison half or mould half.

4. the method manufactured a product, comprising:

Extrude a parison;

Described parison is positioned at and has among mould mould partly;

The upper and lower part of described parison is made to subside to limit the sealed inside of described parison;

Partly closed described mould to reserve gap between described mould half;

Gas-pressurized is introduced the described sealed inside of described parison with the described parison that expands;

The parison of described expansion is partly formed against described mould to begin to take shape described product in the mould that described part closes; And

The described product begun to take shape is split into two halves along the gap between described mould half,

Wherein, described method also comprises at least one the applying film against described parison half or mould half.

5. method according to claim 4, wherein by introducing the gas-pressurized of raised pressure further partly to form described parison against described mould.

6. method according to claim 5, the step of wherein said introducing gas-pressurized comprises gas pressure and reaches 3 bar, and reaches 6 bar for the described raised pressure beginning to take shape described product.

7. method according to claim 4, also comprises:

Remove the upper part of described parison or at least one of lower part.

8. method according to claim 7, described removal step is implemented during partly forming the step of the parison of described expansion against institute's mould.

9. method according to claim 4, also comprises:

Open the mould that described part is closed;

One or more component is introduced between described mould half;

Described mould is closed, to make described parison half fuse with one another with the product forming fusion along corresponding edge around described one or more component; And

To the internal pressurization of the product of described fusion.

10. method according to claim 9, is also included in and described parison is transversely stretched in the direction of the extruding longitudinal direction of described parison in the mold afterwards in described parison location.

11. methods according to claim 9, wherein said one or more attaching components is to the madial wall of one or two fuel tank half.

12. 1 kinds of methods manufactured a product, comprising:

Extrude a parison;

Described parison is divided into parison half;

Between the mould half described parison being partly positioned at mould;

Film is applied against described parison half or described mould partly at least one; And

Described film and parison half is partly formed to produce multi-layered product partly against described mould.

13. methods according to claim 12, wherein said product half is by following formation, the space of finding time between parison described in described mould half-sum half forms described multi-layered product half with vacuum, and, mutually fuses along corresponding edge to make described multi-layered product half by described mould semi-closed together.

14. methods according to claim 12, gas-pressurized, by following formation, by described mould semi-closed together to make described product half mutually fuse along corresponding edge, and is introduced described closed mould half by wherein said product half.

15. methods according to claim 12, wherein said film is by clamping and the diaphragm be deployed between described mould half and locating.

16. methods according to claim 12, wherein said film is only against described parison half location.

17. methods according to claim 12, wherein said film is only positioned between described parison half-sum mould half.

18. methods according to claim 12, wherein said film be positioned to not only against described parison partly but also between mould described in described parison half-sum half.

19. methods according to claim 12, wherein said parison is separated by following steps:

The top and the bottom of described parison are made to subside to limit the sealed inside of described parison;

Partly closed described mould reserves gap between described mould half;

Described sealed inside gas-pressurized being introduced described parison expands to make described parison sections; And

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

20. methods according to claim 12, wherein said parison is separated by following steps:

Extrude a parison to comprise the part longitudinally weakened;

Retract described relative fixture to be torn by described parison to limit described parison half.

21. 1 kinds of products manufactured by method according to claim 12, wherein said film is configured with at least one barrier layer and at least one tack coat.

22. products according to claim 21, at least one barrier layer wherein said is made up of at least one in following material: ethenol copolymer (EVOH), polyamide (PA) sill or nano composite material.

23. products according to claim 22, wherein said polyamide based material comprises PA12, PA6, PA6/6,6 copolymers, MXD6, or at least one of PA and polyethylene mixture or alloy.

24. products according to claim 21, at least one tack coat wherein said is made up of maleic anhydride grafted linear low density polyethylene.

The described product of 25. claims 21, wherein said film is also configured with at least one structure sheaf.

26. products according to claim 25, at least one structure sheaf wherein said is by pure or grind high-density polyethylene material again and form.

27. products according to claim 25, at least one structure sheaf wherein said is made up of conducting polymer.

28. products according to claim 25, at least one structure sheaf wherein said is made up of a kind of material, and described material is not bonded to described parison half to leave space between at least one structure sheaf described and its corresponding parison half.

29. products according to claim 28, wherein said film is welded on self at the tie lines place of described product.

30. 1 kinds, for the manufacture of the equipment of product, comprising:

Extruder, it extrudes a parison to comprise the part longitudinally weakened; And

Relative fixture, it advances to clamp described parison at the opposite side of described weakening part, and retracts to be torn to limit parison half along described weakening part by described parison.