CN101395068B - Composite spout, and injection molding device for molding the same - Google Patents
Composite spout, and injection molding device for molding the same Download PDFInfo
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- CN101395068B CN101395068B CN200780007969XA CN200780007969A CN101395068B CN 101395068 B CN101395068 B CN 101395068B CN 200780007969X A CN200780007969X A CN 200780007969XA CN 200780007969 A CN200780007969 A CN 200780007969A CN 101395068 B CN101395068 B CN 101395068B
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- Prior art keywords
- sleeve pipe
- inner peripheral
- nozzle
- nozzle body
- tubular sleeve
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Bag Frames (AREA)
Abstract
The present invention provides a composite spout and an injection molding apparatus for molding the composite spout. In the composite spout, a sleeve fitted to a core member is not displaced during injection molding and the end face of the sleeve is not exposed to the inside of a spout body. A functional resin layer is provided as an intermediate layer in the sleeve, a spout body is injection-molded with the sleeve that functions as a core and is put over the core member of an injection molding die. Therefore, substantially only the inner peripheral surface of the sleeve is exposed to the inner peripheral surface of the spout body. At least a circumferential part of one end of the inner peripheral surface of the spout body meets the inner peripheral edge on one end side of the sleeve or forms a slope radially outwardly tilting from the part of the spout body toward the one end of the spout body.
Description
Technical field
The present invention relates to a kind of can make during fabrication have functional resin sleeve pipe when injection moulding non-migration, the end face of sleeve pipe is not exposed in air, be installed on the nozzle body or is installed in during fabrication sleeve pipe on the nozzle body is positioned at the combining nozzle in the shaping dies easily and forms combining nozzle when injection moulding injection molding device for molding.
Background technology
The containers such as pouch, paper container that the band nozzle of filling high functional food etc. and outpouring from Figure 14 and the instrument that outpours (hereinafter referred to as nozzle) 1 shown in Figure 15 is arranged in recent years, as everyone knows.Content is rotten, the local flavor reduction for anti-block causes for said vesse, not only requires the oxygen transit dose considerably less to container bodies such as pouch, paper containers, even also require the oxygen transit dose considerably less to nozzle.Therefore, for nozzle a kind of combining nozzle 1 that sleeve pipe 10 that barrier properties for gases or the good conduct of oxygen absorption cut off body forms of installing is proposed on the inwall of nozzle.
As functional resin, barrier properties for gases material and oxygen absorption material are arranged.As the barrier properties for gases material, resin materials such as ethylene-vinyl alcohol copolymer are for example arranged.The oxygen absorption material can add oxygen absorbent in the barrier properties for gases resin, also can be the structure that the barrier properties for gases resin self has oxygen absorption.As material, poly-butadiene as the oxidisability organic material, polyisoprene etc. are for example arranged with oxygen absorption.As the material of internal layer 10b and outer 10c, for example use ethylene series resin as thermoplastic base resin.
Figure 17 represents to utilize the injection molding device for molding shaping to possess the manufacturing process of the combining nozzle 1 of sleeve pipe 10.
Shown in Figure 17 A, form nozzle by formpiston 21 and former 31, formpiston 21 is provided with the core 22 of the cylindrical shape that is formed by same diameter from the base end side to the front, sleeve pipe 10 is installed around core 22.Former 31 is opened about being cuts apart mould, and the shape of inner peripheral surface forms the corresponding shape of outer peripheral face with Figure 14 and nozzle body shown in Figure 15.
Shown in Figure 17 C, on a right former 31b, be connected with the cast gate 33 that never graphic injection machine penetrates molten resin.
Adopt such structure, the core 22 of formpiston 21 is inserted in the former 31 and closing molding shown in Figure 17 C, penetrates molten resin from cast gate 33 in die cavity 32.Form the part of the nozzle body 2 that becomes combining nozzle 1 by this molten resin, the inboard that is formed on nozzle body 2 possesses the combining nozzle 1 of sleeve pipe 10 (with reference to TOHKEMY 2001-213455 communique).
Yet, be under the situation of same diameter at cross-sectional plane from the base end side of above-mentioned core 22 to front core 22, shown in Figure 17 D, because the resin flow pressure that penetrates from injection machine, sleeve pipe 10 be that guiding piece is offset to the axial base end side of core 22 with core 22.Like this, be displaced under the such situation of the base end part of core 22 at sleeve pipe 10, the end face of sleeve pipe 10 exposes in the inside of combining nozzle 1 sometimes.
Prevent countermeasure as this, the manufacture method of combining nozzle 1 is as shown in figure 18 arranged.
Shown in Figure 18 A, former 31 does not change, but the base end side of the core 22 of formpiston 21 form with the thickness of sleeve pipe 10 about equally and with core 22 axially roughly the stage portion 29 of quadrature (with reference to Figure 18 to looking E), one of sleeve pipe 10 is distolaterally connected at the base end side of core 22 with stage portion 29.Alignd mutually with the position that sets sleeve pipe 10 in combining nozzle 1 in the position that forms this stage portion 29.
Adopt said structure, shown in Figure 18 B, the core 22 of formpiston 21 is advanced move to former 31 side closure formpistons 21, former 31, shown in Figure 18 C, penetrate molten resins and form combining nozzle 1 from cast gate 33.In the time of in the die cavity 32 that molten resin is injected in the former 31, even sleeve pipe 10 is subjected to the flow pressure of molten resin, stage portion 29 also can limiting boot 10 moving axially to core 22.
Yet, shown in Figure 18 A, when forming stage portion 29 on the core 22 at formpiston 21 and come limiting boot 10 mobile, molten resin can not spread to a distolateral end face 10g of sleeve pipe 10, this sleeve pipe 10 with the state that exposes in the inner space of combining nozzle 1 be mounted (with reference to Figure 18 to looking F).Its result, the end face 10g of sleeve pipe 10 exposes, and when having filled content, from the functional resin layer 10a stripping functional resin of forming sleeves 10, the local flavor that causes problem on the health or content reduces, changes such problem.
Summary of the invention
The 1st purpose of the present invention is In view of the foregoing made, and its purpose is to provide a kind of injection molding device for molding that is installed in the combining nozzle that sleeve pipe can not be offset, box face is not exposed on the core and forms combining nozzle when injection moulding in nozzle body.
In addition, with the inner peripheral surface of sleeve pipe 10 during, shown in Figure 17 A, between the inner peripheral surface of the core 22 of formpiston 21 and sleeve pipe 10, do not form the gap at the mode formed composite nozzle that the inner peripheral surface of combining nozzle 1 exposes.Therefore, existence is difficult to sleeve pipe 10 is installed in problem such on the core 22.
In addition, may cause resin do not spread to formed combining nozzle 1 sleeve pipe 10 both ends and peel off the end of sleeve pipe 10.Therefore, the end face 10g of sleeve pipe 10 exposes in container, thus strippings such as material such as the gas barrier material deterioration of functional resin layer 10a and oxygen absorbent, thus functional resin does not play a role effectively.
The 2nd purpose of the present invention is In view of the foregoing made, and its purpose is to provide on a kind of core that sleeve pipe easily can be installed in formpiston, the combining nozzle at overlapping casing tube both ends and the injection molding device for molding of formed composite nozzle reliably.
In addition, a spot of molten resin has only been filled in the end of outlet opening 6 sides of formed combining nozzle 1 because the thin capacity of wall thickness is less.Therefore, the heat of molten resin can fully not pass to sleeve pipe 10, may cause the deposited state variation of sleeve pipe 10 and nozzle body 2, as the long and two-short dash line 10h of Figure 14 and shown in Figure 15, may cause the front end of an end 10e of sleeve pipe 10 to be peeled off from nozzle body 2.The content that causes in the container of peeling off of sleeve pipe 10 spreads between nozzle body 2 and the sleeve pipe 10.In addition, because the end face 10g of sleeve pipe 10 exposes,, when filling content, cause the problem on the health or the local flavor reduction of content etc. in container therefore from functional resin layer 10a stripping functional resin.
The 3rd purpose of the present invention is In view of the foregoing made, and its purpose is to provide the combining nozzle of bonding plane of a kind of main body of gluing nozzle reliably and sleeve pipe and the injection molding device for molding of formed composite nozzle.
In order to reach above-mentioned the 1st purpose, combining nozzle of the present invention is configured as the state that the inner peripheral surface in fact the tubular sleeve pipe being buried underground and only made this tubular sleeve pipe exposes at the inner peripheral surface of nozzle body, above-mentioned tubular sleeve pipe is equipped with the functional resin layer as interlayer, on at least a portion of the circumferencial direction of the inner peripheral surface of this nozzle body one end, form from the inner peripheral positions aligning of an end of this tubular sleeve pipe or from than an end inner peripheral of this tubular sleeve pipe by the outside side's bevelled of end radius vector dip plane, the position of radially inner side towards this nozzle body.
In above-mentioned combining nozzle, preferably this of this nozzle body end constitutes the discharge end of this nozzle.
In addition, in above-mentioned combining nozzle, preferably this end of this inner peripheral surface of this nozzle body is this dip plane on the whole circumference direction.
In addition, in above-mentioned combining nozzle, this end of this inner peripheral surface of this nozzle body is this dip plane on a plurality of positions devices spaced apart in a circumferential direction.
In order to achieve the above object, injection molding device for molding of the present invention comprises that outer being with is equipped with as the functional resin layer of interlayer, as the core component of the tubular sleeve pipe of core with around this core component and be coated at the female die member of this tubular sleeve pipe on this core component, in fact this injection molding device for molding is used to form buries this tubular sleeve pipe underground and only makes the combining nozzle of the state that inner circumferential surface exposes at the inner peripheral surface of nozzle body, this core component have at least a portion of circumferencial direction from the inner peripheral positions aligning that is coated at this tubular sleeve pipe one end on this core component or from than this tubular sleeve pipe one end inner peripheral by the position of radially inner side towards an end of this nozzle body shaping die cavity to dip plane that radial outside extends.
In addition, about the statement of an end of nozzle, not stating the distolateral or another is distolateral of nozzle as, is because the dip plane can be formed on one distolateral (with reference to Fig. 3) of nozzle, also can be formed on another distolateral (with reference to Fig. 5) of nozzle.
In order to reach above-mentioned the 2nd purpose, combining nozzle of the present invention is being coated at as core under the state on the core component of injection moulding mould nozzle body is being carried out injection moulding to be equipped with tubular sleeve pipe as the functional resin layer of interlayer, thereby be configured as the state of in fact this tubular sleeve pipe being buried underground and inner circumferential surface being exposed at the inner peripheral surface of this nozzle body, become an end that sets sleeve pipe at the leading section of nozzle body, set the combining nozzle of the other end of sleeve pipe at the base end part of nozzle body, the inner peripheral surface end that constitutes this nozzle body of this nozzle base end part is formed the inside side's bevelled of open end radius vector dip plane towards base end part.
In above-mentioned combining nozzle, distolateral another distolateral inner peripheral surface that can cover this tubular sleeve pipe of this dip plane.
In addition, in above-mentioned combining nozzle, can on the leading section of this nozzle body of the discharge end that constitutes this nozzle, inner peripheral surface, form at this nozzle body from the inner peripheral positions aligning of an end of this tubular sleeve pipe or from than an end inner peripheral of this tubular sleeve pipe by the outside side's bevelled of front end radius vector dip plane, the position of radially inner side towards this nozzle body.
In addition, in above-mentioned combining nozzle, can on the leading section of this nozzle body of the discharge end that constitutes this nozzle, inner peripheral surface, form the sealing area of specified length of front that extends to a distolateral end of this tubular sleeve pipe from the front end of this nozzle body at this nozzle body.
In addition, injection molding device for molding of the present invention comprises that outer being with is equipped with as the functional resin layer of interlayer, as the convex core component of the tubular sleeve pipe of core and with the female die member of the core component devices spaced apart ground that is with this tubular sleeve pipe outward around this core component, in fact this injection molding device for molding is used to form buries this tubular sleeve pipe underground and only makes the injection molding device for molding of the combining nozzle of the state that inner circumferential surface exposes at the inner peripheral surface of nozzle body, the leading section of this core component is by forming from towards leading section side direction radially inner side slyness tapered of the base end part side of this core component, base end part at this core component, end side at this tubular sleeve pipe, from the inner peripheral surface of this tubular sleeve pipe to the corresponding position, the axial outside of this tubular sleeve pipe, can form than the inner peripheral surface of this tubular sleeve pipe more to the recess of radially inner side depression.
In above-mentioned injection molding device for molding, tapered of this core component can extend to from outstanding position, the other end of this tubular sleeve pipe from another distolateral inner peripheral surface extension of this tubular sleeve pipe always.
In order to reach above-mentioned the 3rd purpose, combining nozzle of the present invention is being coated at as core under the state on the core component of injection moulding mould nozzle body is being carried out injection moulding to be equipped with tubular sleeve pipe as the functional resin layer of interlayer, thereby be configured as and in fact this tubular sleeve pipe buried underground and only made the combining nozzle of the state that inner circumferential surface exposes at the inner peripheral surface of this nozzle body, leading section at this nozzle body of the discharge end that constitutes this nozzle, at the outer peripheral face of this nozzle body and/or inner peripheral surface, the corresponding position of leading section side this tubular sleeve pipe and this nozzle body is formed with radius vector to foreign side and/or the outstanding appendix of inner peripheral surface.
In above-mentioned combining nozzle, this appendix may reside on the whole circumference direction or the circumferencial direction devices spaced apart set a plurality of.
In above-mentioned combining nozzle, the appendix of the inner peripheral surface side of this nozzle body can cover a distolateral inner peripheral surface of this tubular sleeve pipe.
Description of drawings
Fig. 1 is the cutaway view of the combining nozzle of the present invention's the 1st embodiment.
Fig. 2 is the cutaway view of formpiston of injection molding device for molding that forms the combining nozzle of Fig. 1.
Fig. 3 represents to utilize the operation of the combining nozzle of injection molding device for molding shaping Fig. 1, A is the cutaway view that the state of sleeve pipe has been installed on the core of formpiston, B is the cutaway view of state that formpiston and former have been closed, C is the cutaway view of filling the state of molten resin from cast gate in mould, and D is the cutaway view that takes out the state of combining nozzle from mould.
Fig. 4 is the cutaway view of the combining nozzle of modified embodiment of the present embodiment.
Fig. 5 is the combining nozzle of other variation of present embodiment, and A is the cutaway view that the state of sleeve pipe has been installed on the core of formpiston, and B is the cutaway view that takes out the state of combining nozzle from mould.
Fig. 6 is the combining nozzle of the present invention's the 2nd embodiment, and A is the front view of combining nozzle, and B is the cutaway view of observing from frontal, and C is the cutaway view of direction observation from the side.
Fig. 7 is the cutaway view of observing from the frontal that makes seal cover cap seal the state of combining nozzle shown in Figure 6.
The A of Fig. 8 is the expansion cutaway view in looking the circle that M represents of Fig. 6 B, the B of Fig. 8 is the expansion cutaway view in looking the circle that N represents of Fig. 6 B.
Fig. 9 is the cutaway view of formpiston of injection molding device for molding that forms the combining nozzle of Fig. 6.
Figure 10 represents to utilize the operation of the combining nozzle of injection molding device for molding shaping Fig. 6, A is the cutaway view that the state of sleeve pipe has been installed on the core of formpiston, B is the cutaway view with formpiston and former closing state, C is the cutaway view of filling the state of molten resin from cast gate in mould, and D is the cutaway view that takes out the state of combining nozzle from mould.
Figure 11 is the cutaway view of the combining nozzle of the 3rd embodiment of the present invention.
Figure 12 is the cutaway view of combining nozzle of the variation of the present invention's the 3rd embodiment.
Figure 13 is the cutaway view of combining nozzle of another variation of the present invention's the 3rd embodiment.
Figure 14 is the cutaway view of the combining nozzle of example in the past.
Figure 15 is another cutaway view of combining nozzle of example in the past.
Figure 16 is that the present invention reaches the block diagram of the sleeve pipe of the combining nozzle of example in the past.
Figure 17 represents the operation of utilizing injection molding device for molding formed composite nozzle in the past, A is the cutaway view that the state of sleeve pipe has been installed on the core of formpiston, B is the cutaway view with formpiston and former closing state, C is the cutaway view of filling the state of molten resin from cast gate in mould, the cutaway view of the state that D is a combining nozzle to the axial offset of core.
Figure 18 represents that another utilized the operation of injection molding device for molding formed composite nozzle in the past, A is the cutaway view that the state of sleeve pipe has been installed on the core of formpiston, B is the cutaway view with formpiston and former closing state, C is the cutaway view of filling the state of molten resin from cast gate in mould, the cutaway view of the state that D is a combining nozzle to the axial offset of core.
The specific embodiment
Below, with reference to the combining nozzle of the invention of description of drawings the present invention the 1st embodiment and form the injection molding device for molding of combining nozzle.
In addition, the sleeve pipe 10 that has illustrated in example in the past is to comprise as shown in Figure 16 with the adhesive linkage of sleeve pipe 10 same structures of present embodiment and by 5 layers of multilayer sleeve that constitutes 10, therefore omits its detailed description.In addition, combining nozzle 1 will have a side of outlet opening 6 as front, and the side that installation portion 17 will be arranged is as base end side.Sleeve pipe 10 with outlet opening 6 sides of combining nozzle 1 as an end 10e, with the installation portion side of combining nozzle 1 as the other end 10f.In addition, about the shape of this sleeve pipe 10 and combining nozzle towards, following the 2nd embodiment and the 3rd embodiment are also identical.
Fig. 1 is the cutaway view of combining nozzle 1 of the present invention.As shown in the figure, combining nozzle 1 is made of nozzle body 2 and the sleeve pipe 10 that is installed in nozzle body 2 inner peripheral surfaces.Nozzle body 2 the inner peripheral surface side be formed be used to flow into and flow out content, the guide hole 3 of the substantial cylindrical shape that forms by nozzle body 2 and sleeve pipe 10.The inner peripheral surface side on the top of guide hole 3 form sealing with not shown seal cover cap connect in all sealing surfaces 5, at the upper end of interior all sealing surfaces 5 formation outlet opening 6.
Outer peripheral face side at nozzle body 2, be used for the outside thread 7 that is threaded with the negative thread of seal cover cap at the distolateral screw-shaped roughly of being formed with of outlet opening 6, the bottom of outside thread 7 be formed be arranged on seal cover cap on show and surreptitiously open fastening portion 15 that (tamper evident) engage and and the flange 16 of these fastening portion 15 devices spaced apart.Functional effects such as flange 16 plays when mobile combining nozzle 1 and controls, supporting.And, form the installation portion 17 that pouch is installed in the bottom of the 2nd flange 16, utilize this installation portion 17 to keep the leak tightness of the connecting portion of pouch and combining nozzle 1.
Formation is step-like from guide hole 3 and the outstanding minor diameter 18 in the inside of the face of joint guide pore 3 of sleeve pipe 10 on the combining nozzle 1 at another the distolateral 10f place that is positioned at sleeve pipe 10, at minor diameter 18 and the boundary portion formation of sleeve pipe 10 and the maintenance face that axially the meets at right angle 18a of guide hole 3.Maintenance face 18a forms equal length with respect to the height radially of guide hole 3 and the wall thickness of sleeve pipe 10, needs the functional resin layer 10a of sleeve pipe shown in Figure 16 10 to be held face 18a covering at least.At the inner peripheral surface mounting sleeve 10 of nozzle body 2, avoided the functional resin layer 10a of sleeve pipe 10 to expose like this in the inner space of guide hole 3.
As the resin that constitutes nozzle body 2, can adopt ethylene series resin as thermoplastic base resin, low density polyethylene (LDPE) (LDPE) for example, medium density polyethylene (MDPE), high density polyethylene (HDPE) (HLDE), wire low density polyethylene (LDPE) (LLDPE), wire ultra-low density polyethylene polyethylenes (PE) such as (LVLDPE), polypropylene (PP), ethylene-propylene copolymer, poly-1-butylene, ethene-butene-1 copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene-1 copolymer, vinyl-vinyl acetate copolymer (EVA), ionomer olefin copolymer (ionomer), perhaps their compound.In addition, can use all thermoplastic polyesters, also can adopt ethylene glycol terephthalate based thermoplastic polyester (PET), polybutylene terephthalate (PBT), Polyethylene Naphthalate (PEN) to wait other polyester or the compound of they and polycarbonate, polyarylate etc.In addition, about constituting the resin of nozzle body 2, following the 2nd embodiment and the 3rd embodiment also can use identical resin.
The functional resin layer 10a of sleeve pipe 10 is according to purposes for example using gases barrier resin, oxygen absorption resin or have moisture and cut off the resin that the resin etc. of property has predetermined function.In addition, as the barrier properties for gases resin, the preferable example when the oxygen barrier layer for example, the amount of enumerating vinyl alcohol units are above, the 99 moles of ethylene-vinyl alcohol copolymers that % is above particularly of 40～85 moles of %, particularly 55～80 moles of %, 96 moles of % of saponification degree.In addition, as other carrier of oxygen barrier resin, nylon resin, particularly nylon 6, nylon 8, nylon 11, nylon 6 have been enumerated, 6, nylon 6,10, nylon 10,6, aliphatics nylon such as nylon 6/6,6 copolymer, poly hexamethylene adipamide m-xylene diamine partially aromatic nylon such as (poly-m-xylylene-adipamide), also have polyglycolic acid resin.And from the keeping quality and the fragrance protectiveness viewpoint of content, the oxygen transmission coefficient of these oxygen-barrier properties is preferably 5.5 * 10
-12Cccm/cm
2Below the seccmHg (23 ℃, 0%RH).In addition, about the resin of the functional resin layer 10a of forming sleeves 10, following the 2nd embodiment and the 3rd embodiment also can use identical resin.
On the other hand, above-mentioned functions resin bed 10a is being made as under the situation of oxygen absorption resin bed, can add oxygen absorption in above-mentioned gas barrier resin layer, the resin self that also can be made as above-mentioned gas barrier resin layer has the structure of oxygen absorption.As above-mentioned resin, for example enumerate the material that the oxidizing reaction of having utilized resin forms, can use material, for example poly-butadiene, polyisoprene, polypropylene, ethene-carbonoxide polymer, add in such polyamide-based of nylon-6, PA-12, m-xylene diamine (MX) nylon and comprise transitional metallo-organic acid salt, Benzophenone, acetophenone, the such photosensitizers of chlorination ketone such as cobalt, rhodium, copper as oxide catalyst in oxidisability.Under the situation of using these oxygen absorbing materials,, can also show further effect by the high-energy line of irradiation as ultraviolet ray, electron ray.In addition, functional resin layer 10a is being made as under the situation of oxygen absorption resin bed, following the 2nd embodiment and the 3rd embodiment also can use identical resin.
In addition, contain oxidable organic component in the resin of above-mentioned gas barrier resin layer, the reduction that does not then produce the barrier properties for gases that the oxidative degradation of barrier properties for gases resin bed causes also can show oxygen absorption.As above-mentioned oxidation organic component,, preferably import carbonyldioxy, carbonic anhydride base, hydroxyl preferably from the polyolefin polymer of polyolefin derivative.The acid anhydride of acrylic acid, methyl acrylic acid, maleic acid, unsaturated carboxylic acid, maleic anhydride, unsaturated carboxylic acid etc. is enumerated by these functional groups, as transition-metal catalyst cobalt preferably.In addition, about contain oxidable organic component in the resin of barrier properties for gases resin bed, the 2nd following embodiment and the 3rd embodiment also are identical.
In addition, also can in the resin that constitutes above-mentioned gas barrier resin layer, mix oxygen absorbent, as above-mentioned oxygen absorbent, enumerate metal powder, for example reducibility iron powder, reducibility zinc powder, reducibility glass putty, one or more oxygen absorbents that form as main component of combination metal low oxide, reducing metal cmpd with reducibility.They also can be as required be used in combination with the such auxiliary agent of hydroxide, carbonate, sulfite, acylate, halide and activated carbon, the activated alumina of alkalies, alkaline earth.Perhaps, enumerate the high molecular compound that in skeleton, has multivalence phenol, for example contain the phenol resin etc. of multivalence phenol.In addition, about mix oxygen absorbent in the resin that constitutes the barrier properties for gases resin bed, the 2nd following embodiment and the 3rd embodiment also are identical.
And, under the situation that functional resin layer 10a is made as the moisture property cut off resin bed, can use the amorphous state or the low-crystalline copolymer (COC) of cyclic olefine copolymer, alkene and cycloolefin as the moisture property cut off resin.But lubricant, modifier such as mixed filler, colorant, heat-resisting stabilizing agent, weather stabilizer, antioxidant, age resister, light stabilizer, ultraviolet absorbent, charged preventor, metallic soap, wax in above-mentioned gas barrier resin, oxygen absorption resin etc.In addition, about functional resin layer 10a being made as the situation of the moisture property cut off resin bed, the 2nd following embodiment and the 3rd embodiment also are identical.
As the internal layer 10b of sleeve pipe 10 and the material of outer 10c, for example can use the ethylene series resin as thermoplastic base resin identical with nozzle body 2, from sleeve pipe 10 viewpoint with the thermal bonding of said nozzle main body 2, preferred above-mentioned at least internal layer 10b uses fusing point to be lower than the ethylene series resin of fusing point of the ethylene series resin of nozzle body 2.In addition, about the internal layer 10b of sleeve pipe 10 and the material of outer 10c, the 2nd following embodiment and the 3rd embodiment also are identical.
The injection moulding mould of shaping combining nozzle 1 then, is described.
Fig. 2 represents the formpiston 21 of injection moulding mould, on the base station 23 of formpiston 21 with to being formed with the core 22 of cylindrical shape with the outstanding mode of the rectangular direction of the face of base station 23.In addition, core 22 with a side of base station 23 as base end side, with free end side as front (about this content, the 2nd and the 3rd following embodiment is also identical).
In the present embodiment, dip plane 22c equates with the wall thickness of sleeve pipe 10 that with respect to the height radially of core 22 external diameter of large-diameter portion 22a equates that with the external diameter of sleeve pipe 10 external diameter of minor diameter 22b equates with the internal diameter of sleeve pipe 10.But, as long as dip plane 22c is arranged in the position of inner peripheral surface on the extended line of the axially-extending of sleeve pipe of sleeve pipe 10.
The axial length of the minor diameter 22b of core 22 forms longer than the axial length of sleeve pipe 10.
As shown in Figure 3A, former 31 can about divide and to cede territory to form by left former 31a and right former 31b, about the inside of former 31 be formed with die cavity 32, the inner peripheral surface shape of former 31 forms the shape identical with the peripheral shape of nozzle body 2.In a right former 31b, be provided with towards die cavity 32 and the cast gate 33 (Fig. 3 C) that is communicated with the exit wound of bullet of not shown injection machine.Above-mentioned formpiston 21 is constituted as and can takes out and put into core 22 ground with respect to the die cavity 32 of former 31 along the vertical direction and advance and retreat mobile.
The forming process of combining nozzle 1 then, is described.
Combining nozzle 1 is formed by the injection molding device for molding with injection machine and shaping dies.
As shown in Figure 2, on the core 22 of formpiston 21 sleeve pipe 10 is installed, a distolateral 10e of sleeve pipe 10 inserts till the root with dip plane 22c connects.Thereby dip plane 22c plays the effect of the location of sleeve pipe 10.As shown in Figure 3A, under the state that sleeve pipe 10 is coated on the core 22, core 22 is inserted in the die cavity 32 of former 31, shown in Fig. 3 B, closes positive female mold 21,31.
Then, shown in Fig. 3 C, by injection machine will stir fusion resin inject to the die cavity 32 from cast gate 33.Sleeve pipe 10 is subjected to the flow pressure of molten resin and is added the load of desiring to the large-diameter portion 22a side shifting of core 22 base end sides, but the dip plane 22c of this mobile core 22 restriction.Thereby sleeve pipe 10 needs not can be to the hardness of radially expansion, the degree that can not move along dip plane 22c.Because dip plane 22c is used for the position of limiting boot 10,, dip plane 22c need be formed on the core 22 therefore for sleeve pipe 10 being configured on the regular position of nozzle body 2.
Utilize injection machine between the core 22 of former 31 and formpiston 21, to fill molten resin, thereby form nozzle body 2.One distolateral and be formed on the gap that is formed with triangle between the dip plane 22c on the core 22 at sleeve pipe 10 filled molten resin and forms the teat 8 of nozzle body 2 in this gap.The part that end face teat 8 and distolateral 10e sleeve pipe 10 connects forms restriction face 8a, and the face that connects with dip plane 22c core 22 teat 8 forms dip plane 8b (with reference to Fig. 3 to looking Y and Z).At another distolateral 10f place of sleeve pipe 10, its end face is melted resin and covers and formation maintenance face 18a.Like this, the end face of one of sleeve pipe 10 distolateral 10e and another distolateral 10f is covered by nozzle body 2.Nozzle body 2 contacts with sleeve pipe 10 with molten condition when being shaped, thereby has improved connecting airtight property and the gleyness of nozzle body 2 with sleeve pipe 10.
Molten resin cools off and is cured, thereby forms combining nozzle 1.Nozzle body 2 for having solidified can take out combining nozzle 1 by opening former 31.In sleeve pipe 10, owing between the minor diameter 22b of sleeve pipe 10 and core 22, do not form the gap, therefore between them, can not enter molten resin, the inner peripheral surface of sleeve pipe 10 and the inner peripheral surface of combining nozzle 1 are connected.
Like this, in the present embodiment, when injection moulding, sleeve pipe 10 can be owing to the flow pressure of molten resin along the moving axially of core 22, after nozzle body 2 is shaped, the combining nozzle 1 that both ends of the surface that can shaping sleeve 10 are not exposed.Thus, after combining nozzle 1 is finished, can prevent functional resin layer 10a stripping functional resin from sleeve pipe 10.
The variation of the combining nozzle of this 1st embodiment then, is described.
As Fig. 3 to looking shown in Y and the Z, the combining nozzle 1 that has illustrated in the above-described embodiment, on the core 22 of formpiston 21, form and extend to the dip plane 22c of minor diameter 22b side, thereby make teat shown in Figure 18 form ring-type continuously along the inner peripheral surface of guide hole 3 to radially inner side from the large-diameter portion 22a of core 22.The shape of teat 8 also can form discontinuously, but is formed by dip plane and rib by devices spaced apart as described below.
Fig. 4 has represented to form the combining nozzle 1 of above-mentioned rib.Combining nozzle 1 forms a plurality of dip plane 8c along the inner peripheral surface circumferencial direction devices spaced apart ground of nozzle body 2.Between dip plane 8c and 8c, form the inwardly square outstanding rib 8d in footpath of guide pore 3.Only change the shape of core 22 when being shaped, sleeve pipe 10 can use sleeve pipe and the former identical with above-mentioned embodiment with former 31.
When forming rib 8d, as long as the partial sum that alternately is formed with dip plane 22c along the circumferencial direction of core 22 with the regulation amplitude with respect to the core 22 of Fig. 2 has omitted the part of dip plane 22c.When being shaped, omitting the partially filled molten resin of dip plane, thereby forming rib 8d shown in Figure 4.The whole end face that dip plane 8c and rib 8d overlapping casing tube 10 1 are distolateral has been avoided from functional resin layer 10a stripping functional resin.When injection moulding, sleeve pipe 10 be tilted face 8c and rib 8d limit its with respect to core 22 to moving axially.
In addition, combining nozzle 1 forms the installation portion 17 (Fig. 1) of pouch at the outlet opening 6 of the large-diameter portion 22a side formation combining nozzle 1 that is positioned at core shown in Figure 2 22 base end sides in the minor diameter 22b side that is positioned at core 22 front.About this combining nozzle 1 towards, also can form outlet opening 6 in the minor diameter 22b side that be positioned at core 22 front at the installation portion 17 of large-diameter portion 22a side configuration pouch.
Fig. 5 represents the above-mentioned combining nozzle 1 that has formed installation portion 17 in the large-diameter portion 22a of core 22 side.Shown in Fig. 5 A, the core 22 of formpiston 21 and sleeve pipe 10 can use formpiston and the sleeve pipe identical with above-mentioned embodiment.The shape of former 31 also can form by the former that uses the shape that in fact turned upside down.The position that is formed on the dip plane 8e on the nozzle body 2 (Fig. 5 B) of the combining nozzle 1 of formed thereby is formed on the installation portion 17, and this point is different from the embodiment described above.
Even constitute as described above, dip plane 8e is the whole end face of overlapping casing tube 10 also, can be from functional resin layer 10a stripping functional resin.When injection moulding, utilize dip plane 8e to come axial move of limiting boot 10 to core 22.
Below, with reference to the combining nozzle of description of drawings the present invention the 2nd embodiment and the injection molding device for molding of formation combining nozzle.
Fig. 6 is a combining nozzle 1 of the present invention, and Fig. 6 A is a front view, and Fig. 6 B is the cutaway view of observing from frontal, and Fig. 6 C is the cutaway view of direction observation from the side, and Fig. 7 is the cutaway view from the frontal observation under the state of combining nozzle loam cake top cover labyrinth.
Combining nozzle 1 is made of nozzle body 2 and sleeve pipe 10.Combining nozzle 1 is formed by nozzle body 2 and sleeve pipe 10, is formed for flowing into and flowing out the guide hole 3 of the substantial cylindrical shape of content in the inner peripheral surface side, at the upper end of guide hole 3 formation outlet opening 6.
Outer peripheral face side at nozzle body 2, be used for the outside thread 7 that is threaded with the negative thread 4a of seal cover cap shown in Figure 74 at the distolateral screw-shaped roughly of being formed with of outlet opening 6, be formed with in the bottom of outside thread 7 with showing of seal cover cap 4 and surreptitiously open fastening portion 15 that the fastening portion of band 4b engage and and the flange 16 of these fastening portion 15 devices spaced apart.Functional effects such as flange 16 plays when mobile combining nozzle 1 and controls, supporting.And, form the installation portion 17 that pouch is installed in the bottom of flange 16, utilize the installation portion 17 that is positioned at these nozzle body 2 base end sides to keep the leak tightness of the connecting portion of pouch and combining nozzle 1.
Shown in Fig. 8 A, teat 8 is formed with the restriction face that axially the meets at right angle 8a of guide hole 3 with towards the dip plane of outlet opening 6 sides (echelon form circular conical surface or conical suface) 8b, promptly towards the dip plane 8b of outlet opening 6 sides expansion.
Shown in Fig. 8 A, on the inner peripheral surface of sleeve pipe 10 1 distolateral 10e, form the appendix 9 of extending continuously from dip plane 8b.Appendix 9 forms from the inner peripheral surface of sleeve pipe 10 outstanding to the radially inner side of sleeve pipe 10, forms with identical cross-sectional shape along the circumferencial direction integral body of sleeve pipe 10.The position that forms appendix 9 is the inner peripheral surface of the end side of sleeve pipe 10 1 distolateral 10e.
Like this, the end face 10g of a distolateral 10e of sleeve pipe 10 (Fig. 8 A) is covered as a bag shape by the guide hole 3 of nozzle body 2, teat 8 and appendix 9, and the functional resin layer 10a of sleeve pipe 10 is not formed and exposes in the inner space of guide hole 3.
Inner peripheral surface side on the top of guide hole 3 forms interior all sealing surfaces 5 that the sealing 4e with seal cover cap 4 connects.In all sealing surfaces 5 be positioned at the leading section of nozzle body 2 of the formation outlet opening 6 of combining nozzle 1, the inner peripheral surface of nozzle body 2 extends to from the front end of nozzle body 2 in front of the end of a distolateral 10e of sleeve pipe 10, makes teat 8 between sealing surface 5 and sleeve pipe 10.
On seal cover cap 4, inboard and the skirt section 4d devices spaced apart of the roof 4c of lid be formed with sealing 4e, the outer peripheral face by sealing 4e contacts with sealing surface 5 and seals.
On the nozzle body 2 at another the distolateral 10f place that is positioned at sleeve pipe 10, be integrally formed therewith covering part 26.Shown in Fig. 8 B, the open end 27 from the inner peripheral surface of the other end 10f of sleeve pipe 10 to installation portion 17 sides of nozzle body 2 forms covering part 26.Covering part 26 covers pouch with the distolateral 10f of another of sleeve pipe 10, and the inner peripheral surface of covering part 26 forms the dip plane 26a of the circular cone echelon form that the radially inner side diameter towards open end 27 side direction nozzle bodies 2 reduces.
Like this, on the inner peripheral surface of the endoporus of nozzle body 2 sleeve pipe 10 is installed, the functional resin layer 10a (Figure 16) of sleeve pipe 10 can not expose in the inner space of guide hole 3.
The injection moulding mould of shaping combining nozzle 1 then, is described.
Fig. 9 represents the formpiston 21 of injection moulding mould, is formed with the core 22 of cylindrical shape on the base station 23 of formpiston 21.Core 22 by the large-diameter portion 22a of the base end side (in addition, core 22 is opposite with respect to combining nozzle 1 its front position) of base station 23 sides that are positioned at core 22, at the minor diameter 22b of the front of core 22, be formed on trapezoidal cone shape dip plane 22c between large-diameter portion 22a and the minor diameter 22b and appendix and form recess 25 and constitute.Dip plane 22c extends crustal inclination towards the front of core 22 to radially inner side.
In the present embodiment, the external diameter of the large-diameter portion 22a of preferred core 22 external diameter that equals external diameter, the minor diameter 22b of sleeve pipe 10 position that equals the interior square end side of the internal diameter of sleeve pipe 10, dip plane 22c be in sleeve pipe 10 inner peripheral surface the position or than the inner side's of inner peripheral surface of sleeve pipe 10 position.
It is the positions that are used to form the appendix 9 of nozzle body 2 that appendix forms recess 25, and 22c forms continuously with the dip plane.In addition, appendix formation recess 25 forms than the internal diameter of sleeve pipe 10 and the external diameter of minor diameter 22b and more attenuates to the radially inner side of core 22.
When being installed in sleeve pipe 10 on the core 22, core 22 is configured in interior all sides of sleeve pipe 10, and the shape of appendix formation recess 25 is preferably formed arc shape, triangle and the shape similar with it for the demoulding slyness that makes core 22.
Form the dip plane 28 of circular cone echelon form at the leading section of the minor diameter 22b of core 22.The front end that dip plane 28 forms towards core 22 tilts to radially inner side, relation between the distolateral 10f of another of dip plane 28 and sleeve pipe 10 is configured to, and the end position of another distolateral 10f of sleeve pipe 10 is axially corresponding with the roughly centre of dip plane 28 with respect to sleeve pipe 10.
The axial length of core 22 forms longer than the axial length of sleeve pipe 10, makes the front end of dip plane 28 outstanding from the end of another distolateral 10f of sleeve pipe 10.
Figure 10 A represents former 31, former 31 by can about left former 31a and the right former 31b cut apart form, be formed with die cavity 32 in the inside of former 31, the inner peripheral surface shape of former 31 forms the shape identical with the peripheral shape of nozzle body 2.Shown in Figure 10 C, right former 31b is provided with towards die cavity 32 and the cast gate 33 that is communicated with the exit wound of bullet of not shown injection machine.Above-mentioned formpiston 21 is constituted as and can takes out and put into core 22 ground with respect to the die cavity 32 of former 31 along the vertical direction and advance and retreat mobile.
The forming process of combining nozzle 1 then, is described.
Combining nozzle 1 utilizes the injection molding device for molding with injection machine and shaping dies to form.As shown in Figure 9, mounting sleeve 10 on the core 22 of formpiston 21, a distolateral 10e of sleeve pipe 10 insert near the boundary portion of dip plane 22c and appendix formation recess 25.Under this state, only between the end of a distolateral 10e of sleeve pipe 10 and dip plane 22c, form the gap that the molten resin when being shaped enters.When being coated at sleeve pipe 10 on the core 22, owing to form the dip plane 28 of circular cone echelon form at the leading section of core 22, so sleeve pipe 10 can be set on the core 22 easily, easily carry out the installation exercise of sleeve pipe 10.
Then, shown in Figure 10 A, outside with sleeve pipe 10, be set under the state on the core 22, core 22 be configured in the die cavity 32 of former 31, shown in Figure 10 B, close formpiston 21, former 31 like that.
Then, shown in Figure 10 C, with injection machine will stir fusion resin inject to the die cavity 32 from cast gate 33.As shown in Figure 9, between the end of a distolateral 10e of sleeve pipe 10 and dip plane 22c, be formed with the gap, so the appendix that molten resin spreads to core 22 easily forms recess 25.In addition, to the large-diameter portion 22a side shifting of the base end side of core 22, what also the regulation of the dip plane 22c limiting boot 10 of core 22 was above moves even sleeve pipe 10 is subjected to the flow pressure of molten resin.
In addition, need to set the length of sleeve pipe 10, so that when moving near the dip plane 22c of core 22 in the end of a distolateral 10e of sleeve pipe 10, the end of another distolateral 10f of sleeve pipe 10 is in the 28 corresponding positions, dip plane with the front of core 22.
Like this, utilize injection machine between the core 22 of former 31 and formpiston 21, to fill molten resin, thereby form nozzle body 2.Shown in Figure 10 A, at a distolateral 10e of sleeve pipe 10 and be formed on the gap that is formed with triangle between the dip plane 22c on the core 22, in this gap, fill molten resin, thereby form the teat 8 of nozzle body 2.Shown in Fig. 8 A, the part that end face 10g teat 8 and distolateral 10e sleeve pipe 10 connects forms restriction face 8a, and the face that connects with dip plane 22c core 22 teat 8 forms dip plane 8b.
In addition, as shown in figure 10, form between the recess 25 in a distolateral 10e of sleeve pipe 10 and the appendix between the core 22 and to fill molten resin (to looking P), thereby on the inner peripheral surface of sleeve pipe 10, form appendix 9 (to looking Q), the end of one distolateral 10e of sleeve pipe 10 is covered as a bag shape by appendix 9, thereby a distolateral 10e who has prevented sleeve pipe 10 peels off from nozzle body 2.
At this moment, the inner and outer circumferential surfaces of the end of a distolateral 10e of sleeve pipe 10 is firmly coupled together, and has prevented to peel off.
Shown in Fig. 8 A, on another distolateral 10f of sleeve pipe 10, between its end and dip plane 28 (Fig. 9), fill molten resin, thereby form covering part 26, the end face 10i of another distolateral 10f of sleeve pipe 10 is mounted portion and covering part 26 covers pouch.
In addition, another distolateral 10f place at sleeve pipe 10, because installation portion 17 is arranged, therefore utilize the heat of being put aside in the molten resin in installation portion 17, perhaps since be in penetrate cast gate 33 near, make nozzle body 2 deposited easily, producing under the deposited condition of poor, also exist to prevent the effect peeled off with the outer peripheral face of sleeve pipe 10.Like this, the end face of one of sleeve pipe 10 distolateral 10e and another distolateral 10f is covered by nozzle body 2 reliably.
Owing to the molten resin cooling is cured, thereby form combining nozzle 1.For the nozzle body 2 that has solidified, can take out combining nozzles 1 by opening former 31.Owing between the minor diameter 22b of sleeve pipe 10 and core 22, do not form the gap, therefore between them, do not enter molten resin, the inner peripheral surface of sleeve pipe 10 is exposed at the inner peripheral surface of combining nozzle 1.
In the present embodiment, when injection moulding, even the thinner wall section that is in nozzle body 2 away from the nozzle body 2 that penetrates cast gate 33 1 sides and the melt-coating part between the sleeve pipe 10, also can to utilize the heat of appendix 9 fully they to be carried out deposited by forming appendix 9, therefore can be more reliably carry out deposited to the contact surface of nozzle body 2 and sleeve pipe 10.
In addition, though sleeve pipe 10 since the flow pressure of molten resin along the moving axially of core 22, after nozzle body 2 is shaped, the combining nozzle 1 that the both ends of the surface that do not make sleeve pipe 10 of also can being shaped are exposed.Therefore, after combining nozzle 1 is finished, can prevent materials such as functional resin layer 10a stripping oxygen barrier material from sleeve pipe 10.
More than, the 2nd embodiment of the present invention has been described, in the present embodiment, though the shape of the leading section of the core 22 of formpiston 21 is formed the dip plane 28 of circular cone echelon form, but also can change the shape of dip plane 28 and form polygonal cone-shaped, semi-spherical shape, be tapered as long as the leading section of core 22 is formed by the shape of the slyness that does not have step in the front of minor diameter 22b at least.
In addition, the combining nozzle shown in Figure 61 that has illustrated in the above-described embodiment makes teat 8, appendix 9 and the covering part 26 form ring-type continuously on the inner peripheral surface of sleeve pipe 10, though the shape of teat 8, appendix 9 and covering part 26 forms ring-type continuously, also can form they but devices spaced apart ground discontinuously and form.
Then, the 3rd embodiment of the present invention is described.In addition, in the present embodiment, also the accompanying drawing with reference to above-mentioned the 2nd embodiment describes.
The combining nozzle 1 that has illustrated in the above-described embodiment forms appendix 9 on the inner peripheral surface of a distolateral 10e of sleeve pipe 10, but the position that forms appendix 9 is not limited to the inner peripheral surface of sleeve pipe.
Figure 11 forms appendix 12 on the outer peripheral face of the thinner wall section 6a of nozzle body 2.This appendix 12 is with the corresponding position of a distolateral 10e of sleeve pipe 10, form ring-type at the outer peripheral face of nozzle body 2.The height of appendix 12 need form the height of the ridge height that is lower than outside thread 7, so that it does not disturb with the negative thread of not shown seal cover cap.
When forming this appendix 12, as long as the appendix of removing on the core 22 shown in Figure 9, that be formed on formpiston 21 forms recess 25 and makes the minor diameter 22b of core 22 extend to dip plane 22c.And, form at appendix 12 corresponding positions with the identical shaped recess of appendix 12 and get final product with the internal perisporium of the former 31 shown in Figure 10 A.
Like this, even on the outer peripheral face of nozzle body 2, form appendix 12, also can utilize the heat of in molten resin, putting aside to carry out deposited to the contact surface of nozzle body 2 and sleeve pipe 10 reliably.
In addition, combining nozzle 1 shown in Figure 12 forms appendix shown in Figure 69 and appendix 12 shown in Figure 11 simultaneously.Like this, on the inner peripheral surface by appendix 9,12 being formed on sleeve pipe 10 and the outer peripheral face of nozzle body 2, can be reliably carry out deposited to contact surface away from the nozzle body 2 that penetrates cast gate 33 1 sides and sleeve pipe 10.Compare with combining nozzle 1 shown in Figure 6 and combining nozzle 1 shown in Figure 11, can carry out deposited to contact surface more reliably the contact surface additional heat of nozzle body 2 with sleeve pipe 10.
The combining nozzle shown in Figure 61 that has illustrated in the above-described embodiment makes the appendix 9 form ring-type continuously on the inner peripheral surface of sleeve pipe 10.The shape of appendix 9 can not be to form continuously also, but devices spaced apart forms a plurality of appendix.
Figure 13 has represented to form the combining nozzle 1 of above-mentioned appendix 13.As shown in the figure, appendix 13 form on the circumferencial direction of the inner peripheral surface of nozzle body 2 devices spaced apart, along the interior all side edge that axially stride across sleeve pipe 10 of sleeve pipe 10, outstanding to the private side of sleeve pipe 10.Be formed with between each appendix 13 sleeve pipe 10 axially on the cross section be the teat 8 of triangle, on teat 8, be formed with along the restriction face 8a that radially extends of sleeve pipe 10 and dip plane 8b towards outlet opening 6 sides.The thickness of the end face of the width of the restriction face 8a of teat 8 and a distolateral 10e of sleeve pipe 10 forms roughly the same, and a distolateral 10e of sleeve pipe 10 and restriction face 8a are connected.
When forming appendix 13, as long as along the circumferencial direction devices spaced apart ground formation of core 22 and the recess of appendix 13 corresponding shapes.
With reference to Fig. 9, when being installed in sleeve pipe 10 on the core 22, the dip plane 22c of end and the core 22 of the dip plane 8b that forms teat 8 of a distolateral 10e of sleeve pipe 10 being connected get final product, dip plane 22c plays the effect of location.When being penetrated by injection machine, molten resin can be from entering with appendix 13 corresponding parts, thereby easily form nozzle body 2.In addition, when penetrating, sleeve pipe 10 be subjected to molten resin flow pressure and by the additional load of desiring to the large-diameter portion 22a side shifting of the base end side of core 22, but the dip plane 22c of the mobile core 22 of sleeve pipe 10 restriction.
Like this, as Figure 11～shown in Figure 13,, also can carry out deposited to contact surface more reliably to the contact surface additional heat of nozzle body 2 with sleeve pipe 10 even constitute appendix.
Combining nozzle of the present invention, under the state on the core component that is coated at the injection moulding mould at tubular sleeve pipe as core with the functional resin layer that is equipped with interlayer, nozzle body is carried out injection moulding and becomes following combining nozzle, in fact above-mentioned combining nozzle is configured as buries this tubular sleeve pipe underground and the state that exposes at the inner peripheral surface of this nozzle body of inner circumferential surface only, on the inner peripheral surface of an end of this nozzle body, on at least a portion of circumferencial direction, be provided with from the inner peripheral positions aligning of this tubular sleeve pipe one end or from than the inner peripheral of this tubular sleeve pipe one end by the position of radially inner side towards the outside side's bevelled of the end radius vector dip plane of this nozzle body, be coated at sleeve pipe the moving axially on the core component when therefore may be limited to injection moulding to core.
This end of this inner peripheral surface of the combining nozzle main body of foregoing invention is this dip plane on the whole circumference direction, therefore whole end face that can overlapping casing tube, from the functional resin layer stripping functional resin of sleeve pipe, prevented that reliably the local flavor of problem on the health or content from reducing, changing when having prevented to fill content.
This end of this inner peripheral surface of this nozzle body of foregoing invention devices spaced apart ground in a circumferential direction is these dip plane at a plurality of positions, therefore can limit outer tubular sleeve pipe the moving axially to core component when the injection moulding that is set on the core component by forming minimal dip plane.
In injection molding device for molding of the present invention, core component have at least a portion of circumferencial direction from the inner peripheral surface positions aligning of an end that is coated at the tubular sleeve pipe on this core component or from than an end inner peripheral surface of this tubular sleeve pipe by radially inner side towards an end of nozzle body shaping die cavity to the dip plane that radial outside extends, therefore can limit sleeve pipe the moving axially to core component when injection moulding that is coated on the core component.
In combining nozzle of the present invention, the inner peripheral surface end of this nozzle body that constitutes the base end part of this nozzle makes the inside side's bevelled of the open end radius vector dip plane towards base end part, in above-mentioned combining nozzle, therefore another distolateral inner peripheral surface of one this tubular sleeve pipe of distolateral covering of this dip plane, the both ends of overlapping casing tube reliably.Its result can prevent the deterioration and the stripping of gas barrier material of the functional resin layer of sleeve pipe.
Injection molding device for molding of the present invention is formed with from the base end part side of this core component towards leading section side direction radially inner side bevelled dip plane smoothly at the leading section of the core component of formpiston, therefore can easily sleeve pipe be installed on the core.
Combining nozzle of the present invention is formed with the appendix of an end of the inner peripheral surface front that covers the tubular sleeve pipe at least a portion of the circumferencial direction of nozzle body, perhaps at the outer peripheral face of this nozzle body, with be formed with radius vector to the outstanding appendix of foreign side on the corresponding position, an end of the front of this tubular sleeve pipe, therefore when injection moulding, form appendix and put aside the heat that is used for they are carried out deposited molten resin fully by melt-coating part place at nozzle body and sleeve pipe, therefore can be reliably carry out deposited to the contact surface of nozzle body and sleeve pipe, and from the functional resin layer stripping functional resin of sleeve pipe, can prevent the problem on the health in the time of can preventing to fill content, or the local flavor reduction of content etc.
Claims (14)
1. a combining nozzle is characterized in that,
This combining nozzle is configured as the state that the inner peripheral surface in fact the tubular sleeve pipe being buried underground and only made this tubular sleeve pipe exposes at the inner peripheral surface of nozzle body, and above-mentioned tubular sleeve pipe is equipped with the functional resin layer as interlayer,
On the inner peripheral surface of an end of this nozzle body, at least a portion of circumferencial direction, be provided with from the inner peripheral positions aligning of an end of this tubular sleeve pipe or from than an end inner peripheral of this tubular sleeve pipe by the outside side's bevelled of end radius vector dip plane, the position of radially inner side towards this nozzle body.
2. combining nozzle according to claim 1, this of this nozzle body end constitutes the discharge end of this nozzle.
3. combining nozzle according to claim 1, this end of this inner peripheral surface of this nozzle body is this dip plane on the whole circumference direction.
4. combining nozzle according to claim 1, this end of this inner peripheral surface of this nozzle body are this dip plane on a plurality of positions devices spaced apart in a circumferential direction.
5. a combining nozzle is characterized in that,
Be coated at as core at tubular sleeve pipe under the state on the core component of injection moulding mould with the functional resin layer that is equipped with interlayer, nozzle body is carried out injection moulding, thereby form the state of in fact this tubular sleeve pipe being buried underground and inner circumferential surface being exposed at the inner peripheral surface of this nozzle body, become an end that sets sleeve pipe at the leading section of nozzle body, set the combining nozzle of the other end of sleeve pipe at the base end part of nozzle body
The inner peripheral surface end of this nozzle body that constitutes this nozzle base end part is by constituting towards the inside side's bevelled of base end part open end radius vector dip plane.
6. combining nozzle according to claim 5, another distolateral inner peripheral surface of this tubular sleeve pipe of distolateral covering of this dip plane.
7. combining nozzle according to claim 5 is characterized in that,
At the leading section of this nozzle body of the discharge end that constitutes this nozzle, on the inner peripheral surface of this nozzle body, have from the inner peripheral positions aligning of an end of this tubular sleeve pipe or from than an end inner peripheral of this tubular sleeve pipe by the outside side's bevelled of front end radius vector dip plane, the position of radially inner side towards this nozzle body.
8. combining nozzle according to claim 7, at the leading section of this nozzle body of the discharge end that constitutes this nozzle, on the inner peripheral surface of this nozzle body, form the sealing area of specified length of front that extends to a distolateral end of this tubular sleeve pipe from the front end of this nozzle body.
9. combining nozzle according to claim 1 or 5, at the leading section of this nozzle body of the discharge end that constitutes this nozzle, the outer peripheral face of this nozzle body, the corresponding position of leading section side this tubular sleeve pipe and this nozzle body be formed with radius vector to the appendix of foreign side and/or the inner peripheral surface of nozzle body, the corresponding position of leading section side this tubular sleeve pipe and this nozzle body is formed with to the outstanding appendix of inner peripheral surface.
10. combining nozzle according to claim 9, this appendix be present on the whole circumference direction or the circumferencial direction devices spaced apart set a plurality of.
11. combining nozzle according to claim 10, the appendix of the inner peripheral surface side of this nozzle body cover a distolateral inner peripheral surface of this tubular sleeve pipe.
12. injection molding device for molding, comprise outer be be equipped with as the functional resin layer of interlayer, as the core component of the tubular sleeve pipe of core with around this core component and be coated at the female die member of this tubular sleeve pipe on this core component, in fact this injection molding device for molding is used to form buries this tubular sleeve pipe underground and only makes the combining nozzle of the state that inner circumferential surface exposes at the inner peripheral surface of nozzle body, it is characterized in that
This core component have at least a portion of circumferencial direction from the inner peripheral positions aligning of an end that is coated at this tubular sleeve pipe on this core component or from than an end inner peripheral of this tubular sleeve pipe by the position of radially inner side towards an end of this nozzle body shaping die cavity to dip plane that radial outside extends.
13. injection molding device for molding, comprise outer be be equipped with as the functional resin layer of interlayer, as the convex core component of the tubular sleeve pipe of core and with the female die member of the core component devices spaced apart ground that is with this tubular sleeve pipe outward around this core component, in fact this injection molding device for molding is used to form buries this tubular sleeve pipe underground and only makes the combining nozzle of the state that inner circumferential surface exposes at the inner peripheral surface of nozzle body, it is characterized in that
The leading section of this core component is formed towards tapered smoothly of leading section side direction radially inner side by the base end part side from this core component,
At the base end part of this core component,, be formed with to corresponding position, the axial outside than the inner peripheral surface of this tubular sleeve pipe more to the recess of radially inner side depression with this tubular sleeve pipe at inner peripheral surface from this tubular sleeve pipe in an end side of this tubular sleeve pipe.
14. injection molding device for molding according to claim 13, tapered another distolateral inner peripheral surface extension from this tubular sleeve pipe of this core component extends to from outstanding position, the other end of this tubular sleeve pipe always.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006059276A JP4848800B2 (en) | 2006-03-06 | 2006-03-06 | Composite spout and injection molding apparatus for forming composite spout |
| JP059276/2006 | 2006-03-06 | ||
| JP2006059278A JP4934330B2 (en) | 2006-03-06 | 2006-03-06 | Composite spout and injection molding apparatus for forming composite spout |
| JP059278/2006 | 2006-03-06 | ||
| PCT/JP2007/054497 WO2007102566A1 (en) | 2006-03-06 | 2007-03-01 | Composite spout and injection molding apparatus for molding composite spout |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101395068A CN101395068A (en) | 2009-03-25 |
| CN101395068B true CN101395068B (en) | 2010-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780007969XA Expired - Fee Related CN101395068B (en) | 2006-03-06 | 2007-03-01 | Composite spout, and injection molding device for molding the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4848800B2 (en) |
| CN (1) | CN101395068B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5072239B2 (en) * | 2006-03-06 | 2012-11-14 | 東洋製罐株式会社 | Composite spout |
| US10065781B2 (en) | 2014-06-23 | 2018-09-04 | Hosokawa Yoko Co., Ltd. | Spout for pouch, spout-attached pouch, and manufacturing method for spout for pouch |
| US9937799B2 (en) | 2015-10-23 | 2018-04-10 | Caterpillar Inc. | Pantograph down stop for trolley |
| MY193060A (en) * | 2016-02-05 | 2022-09-26 | Hosokawa Yoko Kk | Barrier plug and container with barrier plug |
| JP2019031328A (en) * | 2017-08-09 | 2019-02-28 | 旭化成株式会社 | Spout |
| JP2019031318A (en) * | 2017-08-09 | 2019-02-28 | 旭化成株式会社 | Spout |
| JP7530712B2 (en) * | 2019-12-06 | 2024-08-08 | 株式会社細川洋行 | Discharge member with blocking member and storage container |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3088603B2 (en) * | 1994-01-24 | 2000-09-18 | 株式会社クボタ | Manufacturing method of pipe with inlet |
| JP4641078B2 (en) * | 2000-02-01 | 2011-03-02 | 大日本印刷株式会社 | Pouring tool and packaging bag with pouring tool |
| JP4345482B2 (en) * | 2001-09-28 | 2009-10-14 | 東洋製罐株式会社 | Pouch for pouch and plastic pouch to which the spout is fixed |
| JP2006001623A (en) * | 2004-06-21 | 2006-01-05 | Toppan Printing Co Ltd | Barrier bung and bag-like container with barrier bung |
| DE102005011770A1 (en) * | 2005-03-11 | 2006-09-14 | Georg Menshen Gmbh & Co. Kg | Kunststoffausgiesser-welding part |
| JP5261905B2 (en) * | 2005-09-16 | 2013-08-14 | 大日本印刷株式会社 | Outlet with barrier properties |
-
2006
- 2006-03-06 JP JP2006059276A patent/JP4848800B2/en not_active Expired - Fee Related
-
2007
- 2007-03-01 CN CN200780007969XA patent/CN101395068B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2007238104A (en) | 2007-09-20 |
| CN101395068A (en) | 2009-03-25 |
| JP4848800B2 (en) | 2011-12-28 |
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