CN1082849A

CN1082849A - Improvement to the extruding of tobacco containing materials

Info

Publication number: CN1082849A
Application number: CN93107068A
Authority: CN
Inventors: P·M·格林
Original assignee: British American Tobacco Co Ltd
Current assignee: British American Tobacco Investments Ltd
Priority date: 1992-05-15
Filing date: 1993-05-15
Publication date: 1994-03-02
Anticipated expiration: 2013-05-15
Also published as: GB2266834A; IN181208B; GB2266834B; HK105096A; GB9210469D0; CN1038221C; GB9309539D0

Abstract

A kind of pressing method of thin slice of tobacco containing materials, this thin slice is formed by a mould extruding tobacco containing materials that has the slot-shaped outlet nib of straight line.This mould has a plurality of adjustable positions.Each mould part can export regulating in a lateral direction of nib along this on the position.This mould can be regulated at the scene, thereby, in the time of consequently can not exporting nib, cause when obstruction takes place in this outlet nib zone by this when the particle of tobacco containing materials is too big, can be in this mould part of position adjusted to widen the outlet nib of this mould, to allow particle by this outlet nib.

Description

Improvement to the extruding of tobacco containing materials

The extruding that the present invention relates to tobacco containing materials is to provide laminar extrudate.

Thin slice by a continuous tobacco containing materials of an extruder mould extruding is disclosed in the specification of BP GB2201080.The tobacco of using is advisable with acinous for this purpose, and for example, it can be joined by grinding waste tobacco material system.

The GB2201080 patent is described and is illustrated an extruder mould, and the outlet nib of this mould is the slit of a loop configuration.From the extrudate that extrusion die flows out, be the section of approximate tubulose at first, the thin slice shape that then generate is flat.In order to make tobacco containing materials stream, adopted annular mould outlet nib continuously equably by nib.In continuous experiment work, find well-designed extruding flow channel, consider the rheological properties of this kind tobacco containing materials, using the mould of the outlet nib of a slit-shaped that has a straight line is can be gratifying.When using this mould, find, can stop up the outlet nib zone of mould frequently just like cabo particle, and on thin slice shape extrudate, produce the groove of weakening property, or even geosutures.In order to correct this defective mode, the extruder and mould pulled down of must stopping is removed overdimensioned particle.

Utilize the present invention, when the above-mentioned reconstituted tobacoo of extruding, remove the oversize grain that is blocked in the mould, can need not to stop extrusion process.

The pressing method that the purpose of this invention is to provide a tobacco containing materials thin slice, wherein, tobacco containing materials is to utilize extruder to pass through a mould extruding, this mould band thin slice is shaped and exports nib, it is characterized in that the mould part that limits the longer sides of outlet nib can export regulating in a lateral direction of nib along mould on the position.When too big through the particle in described material of this outlet nib, and when stopping up this outlet nib zone, said mould partly can be regulated on the position, and mould is partly widened at above-mentioned mould, therefore, allows this particle to pass through from this outlet nib.

By behind the mould, this mould part of mould can reset into initial position again at particle.By preferably, used a kind of mould, adjustable mould partly is in a plurality of moulds part of this mould one on the position, and this mould partly is arranged on the long limit of mould outlet nib, and each mould part all can export regulating in a lateral direction of nib along mould on the position.All above-mentioned moulds parts all are arranged on the same longer sides of this mould outlet nib and are advisable.

The present invention also provides the equipment of finishing the inventive method, said equipment comprises an extrusion die, and this mould comprises upper and lower two parts, and these two parts removably link together, and have a material flow channel in mould, this passage is led to the outlet nib of the narrow slit shape of straight line by the ingate.

The spendable mould for the object of the invention is according to US Patent specification: US3940221 in general; US3985845; US4003689; US4055398; US4125350; Disclosed mould among US4252519 and the US4281980.

In order clearly to understand and the present invention easy to implement, with reference to following sketch, illustrate, wherein:

Fig. 1 is the cutaway view of Fig. 3 III-III line place extrusion die;

Fig. 2 is the front view (by direction shown in the arrow A) of Fig. 1;

Fig. 3 is the view of the mould that the arrow B direction is observed among Fig. 1;

When enforcement was of the present invention, the extrusion die 1 among Fig. 1 utilized piecing devices 7 to be contained in the port of export of extruder barrel, and the section that it should be noted that Fig. 1 is the vertical plane that contains the extruder barrel axis.

The main body of the steel of mould 1 comprises top 2 and bottom 3, and two parts removably link together by the bolt (not shown).Material circulation passage 4 in the mould 15 extends to narrow slit shape wide, straight line outlet nib 6 from the ingate, and this ingate 5 is coaxial with extruder barrel.

For the purpose of expression clearly, being limited to shown in figure is right after that gap between the flat surfaces of passage 4 of upstream of outlet nib 6 draws in the mode of exaggeration.

Steel side plate 8 and 9 removably is loaded on mould main body and the metallic gasket (not shown), this pad is positioned between said side plate 8,9 and the mould main body, two sides with the flow channel 4 of guaranteeing to export nib 6 zones are sealed, and above-mentioned zone just passage 4 extends to the zone of die body major side edges.

Mould 1 top 2 has one and extends to the deep trouth 10 of another side on one side from it, as shown in Figure 1, groove 10 is set means, the metal thickness between the lower surface on mould 1 bottom and top 2 is relatively said fewer, and this regional metal forms a neck 11.Therefore, the part on the top 2 on neck 11 right sides is called nose 14.

By a not shown device that goes out, be fixed on mould 1 top 2 be a girder steel 12, this beam partly extends across groove 10.Nine bolts 13 pass from this beam 12, and with beam 12 on screwed hole engagement.Best, each bolt 13 tool head is hexagonal recess, therefore can use the die nut swivel bolt.Each bolt 13 can make away from the terminal part of head one side surface of groove 10 is applied active force after being rotated, and central authorities as shown in Figure 1 regulate bolt 13.Further rotate each bolt 13 in the same way, it is crooked that neck 11 is produced, and nose 14 offsets downward around neck, can reduce to export the slit of nib like this.

In extrusion operation, tobacco containing materials is forced to apply a suitable active force by utilizing adjusting bolt 13 at nose 14 by passage 4 from above-mentioned extruder barrel continuously, but so that will export the thin slice shape extrudate that production institute required thickness is set in the slit of nib for.

This nib slit can for example be 700 μ m.

Reference number 15(Fig. 1) indicated an overdimensioned particle, as offal, it is brought to the position that is indicated with tobacco containing materials stream.Because oversize grain 15 can not pass through outlet nib 6, thereby is blocked in this marker location.Tobacco containing materials is divided into two limits by particle 15, therefore forms a continuous defect line on the extrudate film.

The method according to this invention when having formed the defect line, one of the most close defect line is regulated bolt or a plurality of bolt 13 is unscrewed, to loosen the active force that acts on facing on the nose 14 of defect line.Make under the internal pressure effect of the object that nose 14 flows in mould upwards curved like this.In this way, therefore also be the gap width expansion that will export nib 6 facing to plugging particle 15 location facing to the defect line, allow particle 15 to pass through outlet nib 6 like this with the logistics of tobacco containing materials.When particle by behind the mould, the mould nose that pressure has been loosened can be transferred to the home position again by regulating an identical bolt or a plurality of bolt 13.The oversize grain of removing in the mould need not to stop extrusion process or dismounting mould.

Claims

1, the sheet method of a kind of extruding tobacco containing materials, wherein this tobacco containing materials is pushed by an extruder that has the mould of thin slice shaping outlet nib, it is characterized in that, a mould part that limits a longer sides of this outlet nib can export regulating in a lateral direction of nib along this on the position, when consequently stopping up this outlet nib zone by the particle in the said material of this outlet nib is too big, said mould part can be regulated on the position, the above-mentioned mould of mould is partly widened, therefore, allow particle by the outlet nib.

According to the method for claim 1, it is characterized in that 2, wherein, by behind this mould, said mould can be adjusted to its initial position again at particle.

3, according to the method for claim 1 or 2, it is characterized in that, wherein, mould in order to the extruding tobacco containing materials is a kind of like this mould, wherein the mould of position-adjustable partly is a mould part that is arranged in a plurality of mould parts on the mould outlet nib longer sides, and each mould part all can export regulating in a lateral direction of nib along this on the position.

4, realize the equipment of arbitrary method in the claim 1,2 or 3, it is characterized in that, this equipment comprises: the extruder with mould, said mould comprises: upper and lower two parts, the logistics corridor of outlet nib that these two parts removably link together and one is extended to the narrow slit of straight line by the ingate in mould.

5, according to the equipment of claim 4, it is characterized in that, one side the top of wherein said mould has a deep trouth that extends to another side from top.

6, according to the equipment of claim 5, it is characterized in that wherein having a beam to extend across described deep trouth at least in part.

7, according to the equipment of claim 6, it is characterized in that a plurality of adjusting bolts wherein being arranged by above-mentioned beam, and with described beam on the hole screw-threaded engagement.

According to the equipment of claim 7, it is characterized in that 8, wherein said each adjusting bolt has a head device that matches with spanner, in order to independently to rotate said adjusting bolt respectively.