CN2066658U

CN2066658U - Polypropylene cellulosic screen moulding appliance for tobacco filter-tip

Info

Publication number: CN2066658U
Application number: CN 89218054
Authority: CN
Inventors: 严济民; 李观文
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-10-18
Filing date: 1989-10-18
Publication date: 1990-12-05

Abstract

The utility model relates to a polypropylene cellulosic screen moulding appliance for a tobacco filter-tip, comprising a moulding device main part, a gas distributor, a melt distributor and a belt moulding machine, wherein the moulding device main part comprises a back plate, a main plate body, an air passage cover plate, a material liquid sealing sheet and an air channel sealing sheet. The lower end of the material guiding groove of the main plate body has a material liquid filament spraying hole, and an air bearing producing device is formed between the main plate body and the air passage cover plate. The structure integrates the material feeding function, air supplying function, inside heating filament spraying function, air bearing extending function, etc. into integration. All the filaments become an infinite long cellulosic screen by one time whole moulding of the belt moulding machine, and the performance of the cellulosic screen is excellent.

Description

Polypropylene cellulosic screen moulding appliance for tobacco filter-tip

The utility model relates to the machine-shaping device of cigarette filter filtering material.

At present, the filtering material that cigarette filter adopted is acetate silk (be called for short CAT) and polypropylene fibre tow (abbreviation PPT), the production technology comparative maturity of CAT wherein, but raw material is limited.Polyacrylic raw material is abundanter, can enlarge the output of filter material, but the production technology of PPT is still not overripened, adopt the production technology and the equipment of textile industry synthetic fibers polypropylene filament yarn mostly, make spun PPT product can not satisfy cigarette industry for producing of the specific (special) requirements of dress mouth cigarette to tow, for example: owing to adopt traditional chemical fibre spinning-drawing machine to squeeze spray, and through multistage heating, stretch, the PPT product filament strength of producing is excessive, and the tow rod-making process is poor, barred body is difficult for fast shut-off, otch is difficult for concordant, and hardness is too high, and elasticity is little, pressure drop (draw resistance) is big, and focusing oil filtration efficient is low etc.Used various finishes owing to become in the silk process, some finish Cheng Sihou is difficult to thorough removal again, makes tow products have some peculiar smell, is difficult to meet state health standards.And tow is relatively poor etc. to the adaptive capacity of the existing filter-stick forming device of cigar mill, filter tip attaching machine.Therefore, be necessary to develop good novel polypropylene (PP) filter material of cigarette filter desired properties.

The purpose of this utility model provides produces the former of cigarette filter with the polypropylene web band, adopt this equipment, can be embodied as silk, the one-shot forming of fibre web band, exempt the assembly width of cloth operation of repeatedly stretching and fibre web band, and product length can not be subjected to any restriction, and suitable cigar mill commercial scale continuous is produced, in addition, the life-span of former itself is longer, and performance is more stable.Simultaneously, the product that makes can satisfy the specification requirement of cigarette filter to filtering material, and reduces material cost.

For achieving the above object, the utility model adopts following structure: former comprises former and becomes the band machine, former comprises gas distributor, melt distributor, former main part, and described former main part comprises: backboard, the charging aperture on the backboard, feed space; The mainboard body that does not have any splicing welding joint, have a row or two rows or three rows or four row's deflector chutes on the mainboard body, the upper end of every groove communicates with feed space on the backboard, and every groove lower end is the spinneret orifice of machine-shaping, also have collection chamber on body, collection chamber is positioned at the deflector chute both sides; Feed liquid diaphragm seal between backboard and mainboard body; The gas passage cover plate has inlet plenum on the cover plate, inlet plenum communicates with collection chamber on the body; Gas circuit diaphragm seal between mainboard body and gas passage cover plate; Also comprise the fastening bolt that above-mentioned each parts are fixed together.

Described gas distributor is a gas service pipes, and air inlet pipe on air supply header and each the former main part is linked up, and makes the gas uniform distribution.

Described melt distributor is a melt distributor, polypropylene (PP) feed liquid of fusion is dispensed in the feed space and each deflector chute of former main part.

Described one-tenth band machine comprises: support; Be supported on driving wheel, driven pulley on the support; Be supported on the interior endless metal belt of wheel rim cushion rubber of driving wheel, driven pulley; For no reason safe edge (endless metal belt be embedded in safe edge in) for no reason; Drive the buncher that driving wheel rotates.

In the former main part, row's number of spinneret orifice is preferably two rows, the corresponding row's spinneret orifice of each deflector chute.The aperture is 0.30～0.50mm, and draw ratio is 40:1～20:1, excessive, the too small yarn quality that all influences into of draw ratio.Corresponding two inlet plenums of every row's spinneret orifice, air supporting generates the gap length in crack and regulates by the thickness of gas circuit diaphragm seal.The air gap angle theta is controlled between 45～70 °.

Become in the band machine, the stepless speed regulation between 1.2 meters/minute～60 meters/minute of the linear velocity of endless metal belt, linear velocity is determined the quantitative requirement of fibre web band by production line output and cigarette filter.

The advantage of this former is: former adopts the efficient interior heating technique of uniformity of temperature profile, makes polypropylene (PP) raw material be subjected to thermal balance in becoming the silk process, become silk even; Adopt high temperature air supporting once to become a technology, from moulding process, exempted the excessive drawback of filament strength that repeatedly stretches and cause at all, thereby the cross-sectional geometry, the surface roughness that have both kept each monofilament effectively, making each monofilament keep moderate intensity again, also is simultaneously one of important means that improves fibre web band output; Each parts adopts overall structure in the former main part, and service life is longer, stable performance; In this former, the fibre web band is that one piece is continuously shaped, and strip length can reach endless; Do not need several to piece together; Without adhesive, exempt the unhygienic and peculiar smell that adhesive causes; The adaptation of product is strong, and technological transformation is promptly applicable a little for the filter-stick forming device of existing each cigar mill's operation.

Below in conjunction with accompanying drawing, the utility model is described in further detail:

Fig. 1: polypropylene web band technological process of production schematic diagram

Fig. 2: former main part front view

Fig. 3: former main part top view

Fig. 4: former main part side view

Fig. 5: former main part cross-sectional view

Fig. 6: spinneret orifice end construction schematic diagram

Fig. 7: become band machine structural representation

The A of Fig. 8: Fig. 7 is to view

Fig. 1 is divided into three parts with dotted line, first is for giving treatment system, in the system, the flow process of air is: filtering air (23) is sent into gas distributor (28) after air compressor machine (24), vacuum tank (25), filter (26), heater (27) heating, at this moment the temperature of air is greatly between 300～450 ℃.The flow process of polypropylene material is: raw material (29) is earlier through dehumidifier (30), and with after extruding machine (31) is delivered to melt distributor (32), the temperature of melt is between 280～350 ℃.The former that second portion designs for the utility model, comprise former main part (33) and become band machine (34), third part is a postprocessing working procedures, from becoming product that the band machine comes out through receiving system (35), packing packing (36), final finished dispatch from the factory (37).In whole flow process, first, third part is prior art.

Among Fig. 2,3,4, (1) is backboard, and (5) are the mainboard body, is placed with feed liquid diaphragm seal (3) between (1), (5), and (6) are the gas circuit diaphragm seal, and (7) are the gas passage cover plate, and (8) are air inlet pipe, and (2) are fastening bolt, and (4) are charging aperture.

Among Fig. 5, (1) is backboard, (4) be the charging aperture (having only) on the backboard, (9) be feed space, (5) be the mainboard body, (10) deflector chute for having on the body, deflector chute has two, the corresponding row's spinneret orifice of each deflector chute, and (3) are for being placed on the feed liquid diaphragm seal between backboard (1) and the body (5), (13) be spinneret orifice, (12) be collection chamber, collection chamber is positioned at the deflector chute both sides, and gas circuit diaphragm seal (6) is arranged in the below of (5), cover is gas passage cover plate (7) in (6) one sides, (11) be inlet plenum on the cover plate, one has four inlet plenums, is equivalent to corresponding two inlet plenums of every row's spinneret orifice, (14) for air supporting generates the crack, gap size is regulated by the thickness of (6).

Among Fig. 6, (5) are the mainboard body, and (10) are feed well, and (13) are spinneret orifice, and θ is the air gap angle.

Among Fig. 7,8, (16) are endless metal belt, and metal tape embeds for no reason in the safe edge (17), and (18) are driving wheel, and (19) are driven pulley, and (20) are the wheel rim cushion rubber, and (21) are support, and (22) are buncher.The direction of motion of endless metal belt top zone face is pointed to driving wheel, not reversible running.The fibril that is come out by the former main part is an endless fibre web band through becoming band machine endless metal belt Integratively formed.

Claims

1, cigarette filter is with polypropylene web band former, it is characterized in that it comprises former, become the band machine, former comprises gas distributor, melt distributor, former main part, described former main part comprises: backboard [1], the charging aperture on the backboard [4], feed space [9]; The mainboard body [5] that does not have any splicing welding joint, have a row or three rows or four rows' deflector chutes [10] on the mainboard body, the upper end of every groove communicates with feed space on the backboard, and every groove lower end is the spinneret orifice [13] of machine-shaping, also have collection chamber [12] on the body, collection chamber is positioned at the deflector chute both sides; Feed liquid diaphragm seal [3] between backboard and mainboard body; Gas passage cover plate [7] has inlet plenum [11] on the cover plate, inlet plenum communicates with collection chamber [12] on the body; Gas circuit diaphragm seal [6] between mainboard body and gas passage cover plate is regulated the gap length that air supporting generates crack [14] with the thickness of gas circuit diaphragm seal; The fastening bolt [2] that above-mentioned several parts are fixed together, described gas distributor is a gas service pipes, air inlet pipe [8] on air supply header and each the former main part is linked up, uniform distribution gas, described melt distributor is the melt distributing pipe, with the polypropylene feed liquid uniform distribution of fusion to the feed space and each deflector chute of former main part, described one-tenth band machine comprises: support [21], be supported on the driving wheel [18] on the support, driven pulley [19], be supported on driving wheel, endless metal belt [16] in the wheel rim cushion rubber [20] of driven pulley, for no reason safe edge [17] drives the buncher [22] that driving wheel rotates.

2, by the described former of claim 1, the hole count that it is characterized in that every row's spinneret orifice is 300～550, and the aperture is 0.30～0.50mm, and the spinneret orifice draw ratio is 40:1～20:1.

3, by claim 1 or 2 described formers, it is characterized in that the air gap angle is between 45～70 °.