CN1070154A

CN1070154A - Extruded tube

Info

Publication number: CN1070154A
Application number: CN92102447A
Authority: CN
Inventors: 凯孙
Original assignee: Colgate Palmolive Co
Current assignee: Colgate Palmolive Co
Priority date: 1991-04-08
Filing date: 1992-04-07
Publication date: 1993-03-24
Anticipated expiration: 2007-04-07
Also published as: FR2675123A1; FR2675123B1; ATE139968T1; CA2065519A1; GB2255324B; DE69211883T2; ES2091349T3; NO304644B1; HUT67960A; JPH07165245A; KR920019631A; YU48614B; FI921534A0; RO109313B1; PL294131A1; NO921353D0; BR9201246A; DK45692A; BG96198A; EP0508168B1

Abstract

Pipe of the present invention is flexible, but can not fold usually.The nozzle that has a porthole and to stretch out on the body.Pipe can be with blow moulding or extrusion forming manufactured.Porthole can make the people understand the surplus of retentate in the pipe, and nozzle then makes extruding convenient.

Description

Extruded tube

The present invention relates to a kind of extruded tube of adorning various personal belongings and food, in particular, this extruded tube of the present invention is flexible, has a porthole at least, and a nozzle is preferably arranged.

Extruded tube is usually with opaque multilayer material or opaque extrusion molding pipe manufacturer.Thing in the pipe pushes out by the nozzle on the pipe shoulder.Usually do not have porthole, how much surplus the thing in not knowing to manage is also.This problem that is nothing for converting pipe.Therefore shape behind this pipe pressurized behind the maintenance pressurized has clearly illustrated the surplus of retentate in the pipe.But, after being extruded several times, pipe just is difficult to determine the surplus of retentate in the pipe for restorable flexible tube behind the pressurized.Establish a porthole in the pipe side and just also have how many retentate in the deferent as can be known.

General extruded tube opening part does not have the nozzle of lengthening.Nozzle is exactly the part of one section lengthening, its effect be make in the pipe object on tube wall and pipe shoulder again by a segment distance.It is more accurate when the object extruding is exported in the pipe like this.Can also the pumpback of object in the control tube after pressure disappearance and pipe reinstatement.The object pumpback just can not condense into piece at opening part in nozzle.Remain fresh clean.Can cause the pumpback phenomenon when pipe extruding back restores to the original state, in order to control pumpback, nozzle needs special size.

We have been noted that the such extruded tube of ivory cream is multiple-structure mostly.The multiple-structure pipe has been substituted aluminum pipe.Multilayer pipe is generally all more than three layers.Usually in the middle of is aluminium foil layer, and respectively there is a polymeric layer outside.Useful binders is bonded at polymeric layer on the aluminium foil.Polymeric layer generally is the polyhexene layer.One deck paper can also be arranged, printing the description of product above.The material of multiple-structure is made tubulose,, fix a pipe shoulder and nozzle in the above vertical material lap edge sealing.In the filling tube of pipe bottom, flanging seals object.The multiple-structure pipe is commonly used, because it is similar with the oldfashioned aluminum pipe, and the distortion of extruding back.

The extrusion molding pipe also is used for adorning various personal belongings and food.Its method for making is with the body extrusion molding, will manage shoulder and nozzle again and be fixed on the body.Object seals the heating of pipe bottom edgefold in the filling tube of pipe bottom then.The difference of extrusion molding pipe and multiple-structure pipe is to restore to the original state behind the former pressurized.Here it is, and it does not use the reason of aluminium foil layer, though because aluminium foil layer mainly plays buffer action, but have the characteristic of distortion.

For indeformable flexible tube, need a porthole, otherwise be difficult to determine to also have how many retentate in the pipe.Resemble on the plastic bottle of adorning automobile oil porthole is all arranged.People just can know to also have how many oil in the bottle like this, because generally can once not use up oil.But extruded tube does not particularly also have porthole on the such extruded tube of ivory cream.And do not make the interior object of pipe on the toothpaste again by the nozzle of a segment distance with the control pumpback yet.

The above-mentioned prior art relevant with the transparent toothpaste tube has explanation in No. 439616 patents of the U.S. and No. 4376762 patents.Pipe in No. 493616 patents is made with cellulosic material, and the back that is squeezed restores to the original state.Object in the pipe comes into plain view.The toothpaste of the transparent tube dress in No. 4376762 patents has granule.Because pipe is transparent or semitransparent, has been difficult to local printed product explanation above.Staying porthole on most of opaque pipes is of great use.

The body of the pipe in No. 3356263 patents of the U.S. and pipe shoulder nozzle segment separate, by heating with its involution together.Body is an extrusion molding.Disclosed pipe is common distressed structure in No. 4011968 patents of the U.S., and a multilayer body and an independent pattern shoulder nozzle are arranged.By adding heat sealing together.No. 4526823 patent disclosures of the U.S. a kind of pipe of three-decker, three layers all is plastic layer, and special buffer action is all arranged.Middle one deck can be isolated oxygen effectively.Bonding between each plastic layer with adhesives.

The above-mentioned prior art relevant with using nozzle has explanation in No. 4842165, US Patent, a nozzle and a pneumatic shuttle are arranged in the extrusion equipment of this patent disclosure.Toothpaste or other objects are contained in the bag.When the outer wall pressurized of this device, the air between inwall and the sack is compressed, and the object in the bag just has been extruded out.One nozzle is arranged at the top of device.The flow and the pumpback of a valve may command object at pipe shoulder place.There is not porthole on this device.

One or more portholes are arranged on the pipe of the present invention, and an end of pipe has a nozzle.Pipe can be with blow moulding or extrusion molding manufactured, and blow moulding preferably because nozzle, pipe shoulder and tube wall can once-formings, but also can be made different shape.

Have a porthole on the pipe at least,, so just can observe and determine the surplus of retentate in the pipe along the vertical trend of tube body wall.This point is very important to this pipe, the back and indeformable because it is squeezed.The pipe extrusion just can demonstrate the surplus of retentate in the pipe.In addition, the nozzle on the pipe can make the interior object of pipe up carry a segment distance again from the pipe shoulder, like this object that pushes out with regard to easier control.This nozzle is particularly useful for toothpaste, because toothpaste is up carried a bit of distance again from the pipe shoulder, with regard to easier being coated on the toothbrush.Nozzle can also play the effect of controlling pumpback better.

Extruded tube all is a multiple-structure, because each layer all has the effect of each layer regardless of still being the extrusion molding manufactured with blow moulding.In most cases one deck is the damp proof insulation layer, and another layer is organic isolation layer.The damp proof insulation layer can prevent that object from becoming dry, and organic isolation layer can keep fluid and organic viscosity of object.In addition, may also have one to which floor sealing layer, the words that need can be used for sealing.

Fig. 1 is the front elevation with the extruded tube at the continuous end.

Fig. 2 is the lateral plan that has shown the extruded tube of porthole.

Fig. 3 is the cutaway view of the extruded tube among Fig. 1, has shown multiple-structure.

Fig. 4 is the decomposition view of extruded tube, has shown anchor fitting and small cap.

Fig. 5 is the embodiment decomposition view of the extruded tube at the bottom of the band fold closure.

Fig. 6 is the birds-eye view of extruded tube among Fig. 5.

Fig. 7 is the backplan of extruded tube among Fig. 5.

Fig. 8 is the forward sight or the back view of extruded tube among Fig. 5, has shown the porthole on front tube wall or the back side tube wall.

The lateral plan of extruded tube among Fig. 9 Fig. 5 has shown the porthole of tube wall side.

Figure 10 is the decomposition view of extrusion molding pipe each several part.

The most handy blowing manufacturing of extruded tube that the present invention introduces. Like this, nozzle, pipe shoulder and tube wall just can once-formings. Even the pipe bottom opening, object injects from opening part, also uses Blow moulding is made. Although extruded tube can be blow molded into an integral body, comprise the bottom, if pipe will fill the such paste of toothpaste, just can not be shaped by integral blow. Because can not inject toothpaste in pipe by a very little nozzle, injection length is oversize. Like this, when blowing, according to still injecting from the bottom from the top, perhaps do not want the nozzle segment at top, perhaps do not want nonvolatil bottom. After the extruded tube blow molding with nozzle, just do not inject from the top, and then nozzle is fixed on the extruded tube. After the extruded tube blow molding with permanent bottom, just do not inject from the bottom, again the base fold closure.

Extruded tube is available extruding formation method manufacturing also. Pipe is continuously extruded be configured as certain-length after, be cut into again required length. Pipe shoulder nozzle segment is made separately with injection molding or similar techniques. And then be connected together with heat sealing method and pipe. The pipe bottom opening injects from the bottom. After the injection, bottom fold is added hot-seal.

No matter be to adopt blow moulding or extruding formation method, an observation panel and a nozzle to be arranged at least all on the pipe. Observation panel is along the tube wall tape of a transparent or substantially transparent longitudinally. This tape can be on any tube wall. It must be transparent, and one fixed width and length are arranged, in order to determine the surplus of retentate in the pipe. In most cases pipe is opaque, and a fillet observation panel is arranged on the tube wall. The normally opaque reason of tube wall is that opaque tube wall surface is printed explanation and ornament easily. From 0.2 to 2 centimetre of observation panel width does not wait. Preferably width is 0.35-1 centimetre. Observation panel and opaque tube wall be same material and be integrated, and in the making opaque part removed to get final product. No matter pipe is with blow moulding or extruding formation method manufacturing, and observation panel all is to finish simultaneously with other parts of tube wall.

As mentioned above, when pipe was used the extrusion molding manufactured, nozzle was made separately.When pipe is made with blow moulding, together finish as go into then nozzle and tube wall from rising pouring, make separately as inject then nozzle from the top.Which kind of method manufacturing that don't work, nozzle all must exceed the pipe shoulder also separately has 0.25-1 centimetre for about 1-2.5 centimetre approximately.Nozzle outer surface generally will have screw thread, so that screw on small cap.The diameter of small cap diameter best and pipe is approximate, and pipe just can stand on the small cap like this.

Fig. 1 is the pipe made from blow moulding 10, and a front 11 is arranged, continuity bottom 13 and small cap 12.The connecting bridge of small cap and body is 14, and this pipe comprises that lower part 13 is an integral body.The bottom need not fold, and also need not heat or use adhesive seal.Object is in pipe upper opening filling tube.Nozzle is not made in the process of blowing.

Fig. 2 is the lateral plan of pipe, can see sidewall 15 and porthole 16 on scheming, and except that porthole, pipe all is an opaque material.Porthole extends to the top from the bottom of pipe always.Porthole uses the plastics identical with other parts of pipe to make.

Fig. 3 has shown the multiple-structure of this pipe, and this is the cross section of pipe bottom.17 is damp proof insulation layers among the figure, the 18th, and organic isolation layer, the 19th, integrated protection printed layers.The damp proof insulation layer is generally used the polyolefin manufacturing, preferably low-density polyethylene or polypropylene.Organic isolation layer is generally made with vinyl alcohol.Outmost protection printed layers is also made with polyolefin.It with nexine can be the same also can be different.In a dentifrice tube most preferred embodiment, one deck of close toothpaste is a low density polyolefin, and the about 75-200 micron of thickness generally is the 100-150 micron, preferably 125 microns.Immediate is the organic isolation layer of vinyl alcohol, and thickness is the 15-40 micron, preferably 25 microns.Outermost is a low density polyethylene layer, and thickness is about the 200-400 micron, general 250-325 micron, preferably 280 microns.It is the adhesive phase of 5-25 micron that one thickness can be arranged between each layer, is preferably the 10-15 micron.Proper adhesives is acrylic polymers and polyvinyl alcohol condensed polymer.

These polymeric layer decapacitation damp proof insulations and having outside organic isolation features also help the structure of holding tube.Tube wall just can return to the original form at once after pressure disappears, and can not produce fold and distortion.Tube wall must be very pliable and tough and can be stored and could just in time return to the original form, and the plastic component in the tube wall must be able to be stored original position and just can return to the original form.Low density polyethylene (LDPE) and polypropylene just have this characteristic.Highdensity polyethylene does not then have this characteristic, can't be used as isolation layer, because it can form nonvolatil fold and distortion.But the high density polyethylene (HDPE) and the low density polyethylene (LDPE) of 50% weight can be mixed use, the most handy 25% weight.

The storage capacity of tube wall must be enough to make the almost pumpback simultaneously of the interior object of pipe of spout.The amount of drawing back spout is 0.3 centimetre at least, preferably 0.6 centimetre.

Fig. 4 is the decomposition view of whole extruded tube, and body 10 is arranged, standing finish 20 and small cap 12.The rill 12(a of being convenient to screw is arranged) on the small cap.Standing finish comprises the nozzle 21 of a band bottom non-breathing zone 22.One opening 23 is arranged on the pipe.The flange 24 of pipe and an engagement on the standing finish make standing finish be connected with pipe.Screw thread on the standing finish and the screw thread in the small cap coincide, and small cap is tightened on the standing finish.Can the support level pipe for small cap when the size of small cap must guarantee that the pipe example is come.

Fig. 5 is the embodiment with the integrally formed pipe of blow moulding, and pipe 30, pipe shoulder 31 and nozzle 32 are arranged.The pipe bottom is an opening during shaping, and the band overlap, overlap is just cut can make bottom opening.Porthole 33 from the side up arrives nozzle 32 through the pipe shoulder always, forms a fillet.Opening 35 is arranged on the nozzle and small cap 36 is fixed on screw thread 37 on the pipe.The rill 36(a that the usefulness of tightening is arranged on the small cap).The diameter of small cap is identical with pipe basically.Just can stand on the small cap when pipe turns around like this.After pipe is full from the bottom injection, just seal in 34 folding heating.The pipe front is 38.Fig. 6 is the birds-eye view that does not have the pipe of small cap.Fig. 7 then is a backplan.The bottom of pipe is 39.Fig. 8 is the embodiment of porthole 33 at the pipe in tube wall front 38.33 of pipe portholes among Fig. 9 are on sidewall.

Pipe among Figure 10 extrusion molding manufactured.Tube wall 40 is to cut off after the progressive forming manufacturing.Pipe shoulder 41 and nozzle 42 usefulness injection moldings are made respectively, are fixed on the body 40 of extrusion molding with the heating method for sealing again, inject the such object of toothpaste in the pipe after, the folding heating in base sealed.Rill 44 is arranged on the small cap 43.

At all embodiment that injects from the bottom, small cap has been screwed on during injection.Screw on behind the small cap, object just can not overflow from nozzle during injection.When from top injection, light beam is gone into object, then nozzle fittings is loaded onto.Just pipe can have been put into the box as ready afterwards.

Claims

1, a kind of extruded tube comprises a continuous body, on described body is vertical porthole is arranged, and a pipe shoulder is arranged on the top, on the pipe shoulder nozzle is arranged, and the suitable described body of nozzle extends, and the centre is the aperture, and the object in the pipe is extruded from the aperture, and the pipe bottom is an osed top.

2, according to the extruded tube in the claim 1, its described tube wall has memory function, when the pipe pressurized, after object is extruded in the pipe, pressure one on the tube wall disappears, and tube wall returns to the original form immediately, at least down 0.3 centimetre of pumpback of the object in the nozzle simultaneously.

3, according to the extruded tube in the claim 2, its described tube wall is a multiple-structure, and it is the damp proof insulation layer that one deck is wherein arranged.

4, according to the extruded tube in the claim 3, its described tube wall is a multiple-structure, and it is organic isolation layer that one deck is wherein arranged.

5, according to the extruded tube in the claim 1, its described nozzle exceeds body 1-2.5 centimetre.

6, according to the extruded tube in the claim 1, its described body seals in bottom fold, and described porthole converges with sealing at an end of fold closure.

7, according to the extruded tube in the claim 1, its described body seals in bottom fold, and its described porthole converges with sealing in the middle of the fold closure two ends.

8, according to the extruded tube in the claim 1, its described pipe bottom is continuous, with other parts of sidewall are one.

9, the extruded tube in according to Claim 8, its described porthole is in the pipe side.

10, according to the extruded tube in the claim 1, the width of its described porthole is 0.2-2 centimetre.

11, a kind of extruded tube comprises a single-piece body and pipe shoulder, and described body is continuous, on body is vertical a porthole is arranged, on the described pipe shoulder nozzle is arranged, nozzle extends along described body, and the centre is the aperture, object in the pipe is extruded in the aperture, and the folding heating in pipe bottom is sealed.

12, according to the extruded tube in the claim 11, its described tube wall has memory function, when the pipe pressurized, after object is extruded in the pipe, pressure one on the tube wall disappears, and tube wall returns to the original form immediately, at least down 0.3 centimetre of pumpback of the object in the nozzle simultaneously.

13, according to the extruded tube in the claim 12, the one deck in its described tube wall is an organic isolation layer.

14, according to the extruded tube in the claim 13, its described tube wall is a multiple-structure, and it is the damp proof insulation layer that one deck is wherein arranged.

15, according to the extruded tube in the claim 11, its described nozzle exceeds the about 1-2.5 of body centimetre.

16, according to the extruded tube in the claim 11, the width of its described porthole is about 0.2-2 centimetre.