JPS5877728A - Method and device for mass-producing mount cup for aerosol - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Aerosol dispensing containers are widely used for containing fluid materials, including liquid and powdered particulate products.

The container is equipped with a valve-controlled discharge valve, and is operated by the action of a volatile propellant which is confined within the container together with the product to be dispensed. Since the propellants mentioned above have significant vapor pressures at room temperature, the product in the closed container will be under high pressure.

A typical aerosol unit consists of a hollow cylindrical container that is tightly sealed at one end and has an opening at the opposite end for receiving a dispensing valve assembly. A closure member, commonly referred to as a mounting cup, serves as a closure for the container and as a support member for the valve assembly. The mounting cup typically comprises a panel portion having a hole for receiving the valve assembly, a skirt portion depending from the periphery of the panel portion, and an annular groove portion extending outwardly from the edge of the skirt portion. When the mounting cup is placed in a sealed position on a container, the groove portion rests on a bead surrounding the container opening, and the lower portion of the skirt portion adjacent the groove portion extends outwardly against the container wall adjacent the bead. It has a flared shape. In order to ensure a proper seal between the closure member and the container, the cup is provided with a gasket located in or primarily in its annular groove portion.

Conventionally, a mount cup gasket sealing body is formed by attaching it to a Y-groove portion of a gasket cut in advance. This type of gasket is undesirable because when the mounting cup and container are joined (swaged) together for sealing, the gasket often shifts to a bent position, which prevents the joining operation from being carried out effectively. As a result of this phenomenon, the gasket was disadvantageous in that it did not rest against the mounting cup when filling propellant or operating other valve unit assemblies.

Other industrial methods of forming gaskets on mounting cups consist of forming the gasket in situ from a liquid gasket-forming composition consisting of an elastomer dispersed or dissolved in a volatile organic liquid vehicle. . In manufacturing such a gasket, the liquid composition is deposited at a desired position in the groove portion of the cup while the cup is rotated under a flow rate adjusting nozzle through which the liquid composition flows. The deposit is then converted into a dry, solid encapsulation by driving off the liquid vehicle at elevated temperatures. Although this technique of flowing a gas tube into a predetermined location is widely accepted industrially, it is disadvantageous in that it requires a careful drying operation.

That is, the mounting cup must be handled carefully to avoid tilting it inappropriately out of the horizontal, and expensive equipment must be provided to recover the drained organic liquid. Sink gaskets are generally an expensive method of forming mounting cups.

An example of a sink gasket is U.S. Patent No. 3,342,3.
See specification No. 81.

Another technique for attaching a gasket onto a mounting cup is described in U.S. Pat. No. 3,417,177;
The gasket seal is formed from a heat shrinkable material. A band of gasket material having a diameter greater than the outer diameter of the skirt portion of the mounting cup is placed over the skirt portion and the cup is heated at a temperature and for a time sufficient to cause the band to contract and form a tight frictional bond with the skirt portion. Heat.

Another similar method is described in U.S. Pat. No. 3,443.00'6, in which a band of gasket material is swollen to increase its diameter by using a suitable swelling agent to increase the diameter of the mounting cup. Place it on the skirt part. The swelling agent is then removed from the gasket material and the band is brought into tight frictional contact with the skirt portion.

The disadvantage of both the heat shrink and swelling methods described above for applying gasket material to the mounting cup is that they are expensive and relatively time consuming methods.

U.S. Patent No. 3,417.177, column 4, 27-
Note the statement in line 61 that the placed band must be heated to 240° F' for approximately 2-3 minutes to obtain a tight frictional bond. US 1 Patent No. 3,443,
In the method described in the 006 specification, according to Example 2 thereof, it is necessary to place the band in the swelling liquid for 0.5 to 1.5 minutes, followed by leaving it for the time required for drying. Additionally, large scale production using this method requires the use of an organic liquid recovery system.

U.S. Patent Application No. 112,791' (February 1, 1980)
The specification describes a new mounting cup with a socket, a method for manufacturing the same, and an apparatus. That is,
It is provided that the gasket material is placed in a location on the mounting cup that is preferred to provide a seal between the mounting cup and the bead of the container, and that the disadvantages of the conventional method of applying gasket material to the cup are avoided. . Additionally, it provides an apparatus and method for gasketing an aerosol mount cup in a very fast and efficient operation that produces a gasketed mount cup with excellent sealing properties.

In general, the inventive method described in the aforementioned U.S. Patent Application No. 1112,791 involves passing a tubular sleeve of gasket material over a compressible mandrel, first positioning and in alignment such that a sleeve of gasket material passes through the skirt portion, the mandrel having a fixed portion and a movable portion with respect to relative position to each other and with respect to forward and backward movement with respect to the mounting cup); Push the movable part of the material-carrying mandrel toward the mounting cup to pass the gasket material through the skirt portion of the cup, retract the movable part of the mandrel to its initial position, and cut the sleeve between the mounting cup and mandrel to remove the gasket material. the band of gasket material, and then advances the mounting cup into position 1, at which point the band of gasket material is further pushed onto the skirt portion of the mounting cup. Here the band of gasket material does not extend beyond the skirt portion of the mounting cup. At this stage the gasketed mounting cup can be further processed.

In some applications of the gasketed mount cup described in the aforementioned U.S. patent application Ser. No. 112,791, the so-called "under the cup"
When utilizing such mounting cups for propellant filling in cup ) j, it has been observed, in limited cases, that the gasket band becomes dislodged from the mounting cup during the filling operation. Additionally, it has been observed that in a significant number of gasketed mounting cups, the band of gasket material tends to retreat from the grooved or curved portion of the mounting cup prior to rolling the mounting cup into the container. . Both of these disadvantages reduce productivity in mass production.

The present invention relates to improvements in the methods, apparatus, and cups made for use in the invention described in US Patent Application No. 112,791.

Generally, the products of the present invention consist of one or more compressive deformations in a band of gasket material.

The invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view of an aerosol mount cup made by the method and apparatus described in US Patent Application No. 112,791.

Figures 2A through 21+' are U.S. Patent Application No. 112,
791 is an illustration of one embodiment of the method described in the '791 specification, illustrating several steps in positioning the gasket material onto the aerosol mount cup; FIG.

FIG. 6 is a perspective view of the apparatus shown in FIG. 2, together with the apparatus used for the new second operation according to the invention applied to the product obtained by the embodiment shown in FIG. .

FIG. 4 is a sectional view taken along line 4--4 in FIG. 6.

FIG. 5 is a cross-sectional view along line 5--5 of FIG. 2 of the new second operating device according to the invention shown in FIG. 2;

FIG. 6 is a timing diagram illustrating one cycle of manufacturing a mounting cup according to the embodiment shown in FIG.

FIG. 7 is a perspective view showing another embodiment of the invention.

8 and 9 are partial cross-sectional views illustrating the operation of the apparatus of FIG. 7, respectively, in the initial and advanced positions relative to the mounting cup.

FIG. 10 is a partial cross-sectional view of an apparatus used in the present invention to advance a band of gasket material to a desired location on a mounting cup when the apparatus is in a non-advanced position relative to the mounting cup; Equivalent to.

FIG. 11 is a partial sectional view similar to FIG. 10, and corresponds to the case where the mounting cup is in the advanced position toward the mounting cup.

FIG. 12 is an enlarged sectional view of the portion circled in FIG. 11.

FIG. 16 is a perspective view of a mount cup with a gasket obtained according to the present invention.

FIG. 14 is a diagram illustrating several operations or steps in a preferred embodiment of manufacturing a gasketed mounting cup in accordance with the present invention.

FIG. 15 is a partial cross-sectional view of a preferred apparatus for advancing a band of gasket material onto a mounting cup so that the end of the gasket material is located in a straight section of the skirt portion of the mounting cup.

FIG. 16 is a perspective view of one of the flexible fingers of the device shown in FIG. 15;

17 and 18 are cross-sectional views taken along lines 17-17 and 18-18 in FIG. 15.

FIG. 19 is a partial sectional view taken along line 19-19 in FIG. 15.

FIG. 20 is a partial cross-sectional view of a preferred apparatus for use in the operation of advancing gasket material at 1 to a desired location on a mounting cup.

FIG. 21 is an enlarged partial cross-sectional view of the plunger sleeve, mounting cup and gasket material in the fully advanced position.

FIG. 22 is a plan view of the top surface of one piece of the centering device.

FIG. 1 is a cross-sectional view of a mounting cup with a socket made in the general manner described in U.S. Pat. The mounting cup, indicated by 10 in the figure, has an annular panel portion 12 and an integral skirt portion 14 that hangs from its periphery.
Consists of. The free end of the skirt portion 14 forms an outer edge at 16, beading around the edge of the opening (not shown) of the receiving container when the cup is positioned over the container. An annular groove portion 18 is formed for this purpose. The inner part of the panel section 12 is a dish forming a tubular lip 20 from which an annular wall 22 depends and is joined in perfect contact with a perforated horizontal wall 24. When the cup is in the sealing position, the lip 20 serves as a bearing rest for the valve unit, and the valve shaft passes through the perforated wall 24 into the container.

A gasket 26 is placed on the outer surface of the skirt portion 14 and extends beyond the junction of the skirt portion and the groove portion and into the groove portion.

In Figure iZA to Figure 2F, the parts in each figure that correspond to those in Figure 2A are numbered and explained. Figures 2A to 2F show each stage of the cycle as the plastic gasket material is advanced onto the mounting cup, a tube of gasket material is cut, and a band of gasket material is formed and finally placed on the skirt portion of the mounting cup. FIG. 2 is a schematic diagram showing the relative position of each component during operation of the device.

In FIG. 2A, the sleep portion of gasket material 30 is longer than the length of mandrel 32. In FIG. Mounting cup 34 is securely positioned within seat 36 on a suitable platform by known methods. Locating pin 38 extends through the central diameter of the bearing pedestal of mounting cup 34 and defines a defined space between bottom surface 40 of mandrel 32 and mounting cup 34.

The mandrel 32 has an upper portion 42 and a lower portion 44 that can be folded into each other (this structure is explained in more detail in FIG. 4). The upper and lower grip pieces are indicated at 46 and 48, respectively.

Figure 112A shows the first stage of a cycle.

The mandrel 32 is placed on top of the locator bin 38 and the gasket material at the beginning of the cycle ends at the bottom surface 40 of the mandrel 32. Both grip pieces 46 and 4
8 is in the open position in FIG. 6i2B, the upper grip piece 46 approaches the mandrel 321C and subsequently moves the upper portion 42 of the mandrel 32 towards the mounting cup 34. This movement moves gasket material 30 past the fixed bottom surface 40 of mandrel 32. Both grip pieces 46 and 48 are in the open position.

In FIG. 2C, the gasket material is placed in the desired location on the skirt portion of the mounting cup 34, and the lower gripping piece 48 then grips the lower portion 44 of the mandrel 32.

In the next step, shown in FIG. 2D, the upper gripping piece 46 loosens and the upper portion 42 of the mandrel 32 returns to its initial position.

At the same time, the positioning pin 38 is lowered below the mounting cup 34 and then the cutting edge 50 (shown only in Figure 2D)
) penetrates the gasket material 30.

FIG. 2E shows the mounting cup with gasket material placed on the skirt portion.

The next step is shown in Figure 2F, where the lower grip piece 48 has closed on the lower portion 44 of the mandrel 32, and the positioning bin 38 has moved to the position shown in Figure 2A. Thereafter, The grip pieces are loosened and the device is in the initial stage shown in Figure 2A.

FIG. 3 shows a six station assembly of gasketed mounting cups. Gasket material 30 is supplied from each roll of gasket material (not shown). The upper grip piece 46 has an opening 520 for receiving the mandrel 32.
have columns. The lower grip piece is 48. A mounting cup 34 is fed into position beneath each mandrel 32 through a raceway 54. This is accomplished by means of transporting the desired number of mounting cups (here six) through raceways 54 into positions in vertical alignment with each mandrel to be associated, although the construction is not described here as it is a known technique. In the timing diagram shown in FIG. 6, this structure is shown as a feed finger, feed arm and positioning device. The cutting edge 50 is placed on a rotating shaft 56 and undergoes an oval motion during advancement and retraction of the cutting edge during the cutting cycle. After receiving the gasket material 30, the mounting cup moves to a station where hollow bottom plunger means 58 (detailed in FIG. 5) advances over the skirt portion of the mounting cup.
Press gasket material 30 onto the skirt portion.

FIG. 4 shows in more detail the construction of the single spindle-mount r-cup station of the embodiment shown in FIG.

Upper portion 42 of mandrel 32 has a tapered upper surface 60;
It is threaded on the upper part 42 and part 6
The 0 shape facilitates the passage of gasket material on mandrel 32. Additionally, the upper portion 42 of the mandrel 32 has a cavity 62 in which a spring 64 is disposed. 2A-2F, the juxtaposition of fingers 66 forming the lower end of the upper portion 42 of the mandrel 32 and the eyes/gallons 6 are aligned to receive the upper portion of the mandrel 32 as it moves toward the lower portion of the mandrel. , the juxtaposition of the depressions 68 in the lower portion 44 of the mandrel 32 is best.

The upper gripping piece 46 is a conventional chuck, which rapidly advances and retracts from the mounting cup and is connected to a reciprocating ram such that when gripping the upper part of the mandrel, said part moves towards the mounting cup. Ru.

Lower grip piece 44 is a conventional chuck.

The cutting blade portion 50 is mounted in a conventional manner and inhibits an elliptical trajectory in its advancement and retraction from the mounting cup 34.

FIG. 5 shows a reciprocating plunger whose lower outer shoulder engages the upper end of the gasket material and forces it further into the skirt portion of the mounting cup. In FIG. 5, the sylanger, generally designated 104, is shown at shoulder 108.
It has a lower hollow portion 106 terminating in . lower part 106
The inner set requires a built-in spring with protrusion 112 and pin 11.
It is 0. The protrusion 112 has a beveled end portion 114 that engages and centers the mounting cup by contacting the angled panel portion 113 of the mounting cup.

The function of the sylanger action shown in FIG. 5 is to advance a band of gasket material onto the mounting cup, said band being at or below the sloped surface 113 of the mounting cup 34.

The purpose of locating the gasket band in this manner is to provide the pan r end carried against the straight section 115 of the skirt portion of the mounting cup 34, thereby placing the band of gasket material in its intended position on the mounting cup. properly positioned and interlocked with the second and final plunger action to advance the plunger.

FIG. 6 shows a timing period suitable for the six station unit shown in FIG. In Figure 6', the clamp is a gripping piece, the pin is a pin, and the feed finger and feed arm are a conventional mechanism for advancing six mounting cups per cycle. , positioned to receive gasket material.

A second embodiment of the mandrel-grip arrangement is shown in FIGS. 7-9. This embodiment provides a simplified structure that eliminates the need for a positioning pin through the central opening of the mounting cup. In the perspective view of FIG. 7, gasket material 30 passes over the mandrel, generally indicated at 80. The mandrel 8o has an upper part 82 and a lower part 84, the latter having a recessed part 86 and an upper extension part 88 passing through the upper part 82.
have. The upper extension 88 is resiliently supported against the upper surface of portion 80. The upper gripping piece each has upper and lower sets of rollers 92 and 94, respectively, which rollers are adjusted relative to the upper mandrel portion 82 to prevent movement of the mandrel portion 80. Lower grip piece 96
is a conventional chuck design and has means, not shown, for mutually advancing the lower grip pieces toward the mounting cup. Mount cup 98 is stand 10
9 is mounted in a suitable holding device on the 0.

FIG. 8 shows the initial position of the mandrel-grip arrangement of the FIG. 7 embodiment for moving gasket material onto the mounting cup. It has been found that the gasket material 3o extends slightly beyond the mandrel portion 84 and that a ridge is sufficient. FIG. 9 shows the lower grip 96 approaching the axle portion 84. As the lower grip 96 moves toward the mounting cup 98, the gasket material 30 advances into the skirt portion of the mounting cup. The properties of the gasket material are as follows:
4 is such that gasket material 30 passes over rollers 92 and 94 of upper grip piece 90 as it advances toward the mounting cup. After the gasket material is placed on the skirt portion of the mounting cup, the lower grip piece 96 is released and the mandrel portion 84 returns to the initial position shown in FIG. In this way, we are ready to repeat the cycle. After the core, rod portion 84 returns to its original position, the cutting blade portion 102
advances to cut through the gasket material. After cutting, the mounting cup is transported to a station (see FIG. 5) where gasket material 30 is further advanced onto the skirt portion of the mounting cup. The single core rods in Figures 7 to 9 are 2nd to 5th.
It can also consist of a multi-rod-grip piece arrangement as in the embodiment shown.

Following the initial advancement of the band of gasket material into the skirt portion of the mounting cup, the mounting cup is passed in a normal trajectory through a zone in which the band of gasket material is heated by conventional heating means. For example, the heating zone can be a conventional mounting cup top in indirect heat exchange with an insulated heated water system, which can be hermetically controlled through a conventional heated water control system.

It has been found that heating the mounting cup to 160-180''F is sufficient.

From the heating zone, the gasketed mounting cup is sent to a second flash station. The syranger and plunger action at the second plunger station are 10th to 1st.
It is described in Figure 2.

In FIG. 10, band 116 of gasket material is shown in an initial advanced position on the skirt portion of the mounting cup. The syringe of FIG. 10 is indicated generally at 120 and consists of an outer sleeve portion 122, a head portion 124, a chuck portion 126 connected to a syringe advancement mechanism (not shown), and includes an outer sleeve portion 122, a head portion 124, and a chuck portion 126 connected to a syringe advancement mechanism (not shown).
22 constitutes a depression 128. Inside the recess 128 is a mounted cup stripping piece, generally indicated at 130, which consists of slidable interlocking parts 132 and 134 and a mounted cup center piece 136, which is attached to the head by a spring 138. 1
It is offset from 24. Portion 132 of mounted cup stripping piece 130 is biased from head portion 124 by spring 140. A portion 134 of the mounting cup stripping piece 130 is offset from a portion 132 of the spring 142.

Sleeve portion 122 has a lower portion 144 with an annular shoulder 146 and an end 148. Band mounts cup 1
During advancement to its destination position on 18, shoulder portion 116 interlocks with band 116 of gasket material.

The end portion 148 is best shown in FIG.
It has a shape with a projecting portion 150 so as to appear as shown in FIG. This end 148 has a slightly curved profile.

During operation, mounting cup 118 is placed in place at the second plunger station. When advancing the syringe 120 toward the mounting cup 118 by centering the cup relative to the plunger 120, the mounting force horn center piece 136 assists in this function. 10th
As shown, the mouth/top cap stripping also contacts the cup. When the syringe 120 is further advanced into the configuration shown in FIG.
2 advances to engage the shoulder 146 against the gasket material band 116 and mounts the band 116 onto the cup 1.
18 over the skirt portion to finally advance the band to the final position shown in FIG. As shown in FIG. 11, the end 148 of the sleeve portion 122 terminates its advancement as the wall 152 of the groove portion of the mounting cup bottoms out, while the annular lip formed in the band of gasket material 116 in the meantime. 154 acts on the sket material through the compressive deformation caused by the ledge 150. During retraction of plunger 120, portion 134 of one piece of mount lever 120 is removed from sleeve portion 120.
2 force,; it moved forward but was deflected by the spring 142 with respect to the shima/tokatsuzo 118 until it clearly moved to the sket;
Accordingly, the retractable sleeve portion 122 prevents the mounting cup 118 from lifting. Obviously, Shiransha 1
During the advancement of 20, springs 140 and 142
must be designed so that it can be advanced towards section 134.

A preferred plunger for use in the second noranger position is shown in Figures 15-21.

In FIG. 15, plunger 200 has an arbor 202 connected by conventional means to a reciprocating ram (not shown), with a section 206 retracted into its pore 204. Piece 206 is spring loaded and retracted independently of pore 204. The folded section of section 206 terminates in a slotted collar portion 220. Located within the piece 206 is an independently spring loaded mounting cup centering means 208. A slotted collar 210 is located on the outside of the folded cross section of the piece 206, the slots of the collar 210 receiving the fingers 212.

The finger 212, the details of which are shown in FIG. 16, is fixed to the shear bar 202 by a dowel pin 214. Slot 216id receives O-ring 218. This O-ring serves to constantly apply inward pressure to the fingers 212. The finger 212 is a slotted collar portion 22
0 slot 222 (FIG. 18).
. A play 4224 is fixed to the bottom of the retracting piece 206. The plate 224 has a shoulder 226 against which the shoulder 228 of the fin 212 abuts as the plunger 200 advances.

The distance that finger 212 travels to meet shoulder 226 determines the distance that gasket 230 advances over skirt portion 232 of mounting cup 234. Threaded onto the slotted collar 210 is an adjustable outer sleeve piece 236. This sleeve piece 236 serves to prevent fingers 212 from expanding outward and to direct bottom surfaces 238 of fingers 212 against the top surface of gasket material 230. The gasket is first advanced over the mounting cup where the cup and sket are heated to 160-180°F and then advanced to the final plunger position.

The sylanger device 240 shown in FIG. 20 first centers the mounting cup 242 and advances the gasket 244 to the desired position on the mounting cup.

The syringer device 240 is mounted to an arbor (not shown), which in turn is mounted to a reciprocating press (not shown) by conventional means. The sylanger device has a plug piece 250 with a central pore defining a chamber 252. The plug piece 250 has an inner sleeve piece 2.
54 is attached to the reed, and the sleeve part is connected to the plug part 2.
It has a flange 256 for connection to 50.

Connected to the inner sleeve piece 254 is an outer sleeve piece 258 via seven flange 260 .

A centering device 262 is located within the inner sleeve piece 254 and chamber 252 and is located within the inner sleeve piece 254 and chamber 252 and is located within the spring retainer and fastener 2
64, Rotsu V266, piston piece 268.0 ring 2
10 and a centering plug 272.

An independently panel-loaded mounted cup stripper 274 is incorporated within the interior of the inner sleeve section 254 and rides on a shoulder 276 of the inner sleeve section 254. Opening 278 of stripper 274 has a slot configuration shown in detail in FIG.

This slot structure prevents the centering device from disengaging from the plunger assembly. Spring retainer and fastener 26
4 abuts against the upper surface of stripper 274. A tip surface 284 bounded by an inner sleeve piece 254 and an outer sleeve piece 258
is shown enlarged in FIG. The recessed portion 286 on the surface 284 of the outer sleeve portion 258 and the shoulder 290 of the inner sleeve portion 254 are clearly visible.

In operation, pressurized air is blown into chamber 252 to advance centering device 262 relative to the mounting cup. This advancement occurs at the beginning of the downward stroke of the reciprocating press. Air passes through the slot in filter 9 tripper 274 to create pressure against piston 268. This pressure overcomes the retraction pressure of spring 288 and advances the centering device relative to the mounting cup. Before the advancing sleeve part contacts the gasket, the air supply is cut off and the spring force returns the centering device to the retracted position. The plunger sleeve portion continues to move forward and its shoulder 29
0 engages gasket 292 and pushes the gasket further onto the mounting cup (FIG. 21). The inner and outer sleeve portions eventually bottom out in the groove portion 294 of the mounting cup. During this bottoming action, the plastic sleeve portion is able to exert a compressive force against the sket material, causing the gasket to fold into the recess 286.

The gasket surface is thus distorted as shown in FIG. After advancing and bottoming out the plunger, the sleeve portion is retracted but the stripper remains in contact with the mounting cup. This contact occurs for a portion of the retraction cycle of the independent spring portion of the stripper, ie, until the inner sleeve portion leaves the mounting cup. Following this actuation of the syranja, the mounting cup is rapidly
Cool to 'F'.

For a mounting cup that is 0.011 inch thick, the thickness g is set such that the sleeve portion stops advancing 0.016 inch from the surface on which the mounting cup rests.
It was found that 0.014 inches of gasket material produced sufficient compression and distortion.

Once the gasket material has been advanced to the desired location on the mounting cup, the socketed mounting cup is preferably subsequently cooled to room temperature.

To form a frictional bond between the gasket material and the mounting cup skirt portion, the inner diameter of the sleeve of gasket material is slightly smaller than the outer diameter of the mounting cup skirt portion. Normally, the skirt diameter of the so-called 11-inch aerosol mount cup is 0.980 to 0.
．． It is 990 inches. It has been found that a gasket material with a thickness of 0.1 inch is satisfactory. To accommodate this gasket thickness, the skirt diameter is 0.95.
I was able to use a 0 inch mount cup. As a gasket band, one with a width of 32 inches could be used satisfactorily.

Any plastic can be used as a material for the sketches as long as it has sufficient elasticity, but if you take into account the compatibility between the contents of the container and the plastic material, a molecular weight of 40.
,000~200,000 polyisobutylene content 5~
Plastics comprising low-density (density 0.916-0.922) polyethylene of 15% and stabilizers commonly used for polyethylene under the conditions of use as gasket materials have been found to be satisfactory gaskets in a wide range of products. It was found that the materials were provided.

The present invention has been described above with respect to the case in which an annular groove is provided in the gasket, but one along the width direction of the gasket has been described.
The present invention also includes a case where a series of radial lips are provided. It is also possible to have multiple annular lips, generally due to discontinuities in the flatness or smoothness of the gasket, such as the lip formation described above, which resists movement during filling of the gasket or into its initial advanced position on the mounting cup. It has been found that this provides resistance to returning the gasket position.

Compared to mounted cups that carry gasket material only along the cup skirt portion, the cup according to the present invention carries gasket material from the juncture between the cup and the container pedestal, and the cup skirt also carries the gasket material into the groove portion. Because it is extended, it has better sealing properties. Additionally, the mounting cup socket of the present invention has a substantially uniform thickness throughout prior to joining to the container. However, prior art poured gas feet are non-uniform and thinner toward the outer ends of the groove portions and near the intersection of the skirt portion and the groove portion. Uniform thickness provides a better seal.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an aerosol mouth cup made by the method and apparatus described in U.S. Patent Application No. 112,791. Figures 28 through 2F are U.S. Patent Application No. 112,79.
FIG. 1 is an explanatory diagram showing several steps of an embodiment of the method described in Meisho No. 1. FIG. 6 is a perspective view of the apparatus of FIG. 2 together with the apparatus used for the second operation according to the invention performed on the product obtained according to the embodiment shown in FIG. 2; FIG. 4 is a sectional view taken along line 4--4 in FIG. 6. FIG. 5 is a sectional view along line 5--5 in FIG. 2 of the device for a second operation according to the invention shown in FIG. FIG. 6 is a timing diagram illustrating one cycle of the embodiment shown in FIG. 2. FIG. 7 is a perspective view showing another embodiment of the invention. 8 is a partial sectional view illustrating the initial position of operation of the device of FIG. 7; FIG. FIG. 9 is an external sectional view illustrating the advanced position of operation of the device of FIG. 7; FIG. 10 is a partial cross-sectional view of the device used to advance a band of gasket material in accordance with the present invention, in a non-advanced position relative to a mounting cup. FIG. 11 is a partial cross-sectional view of a device similar to FIG. 10 in an advanced position toward the mounting cup; FIG. 12 is an enlarged sectional view of the portion circled in FIG. 11. FIG. 16 is a perspective view of a mount cup with a gas mat obtained according to the present invention. FIG. 14 is a diagram illustrating the flow of several operations or steps in a preferred embodiment of the invention. FIG. 15 is a partial cross-sectional view of a preferred apparatus for advancing a band of gasket material onto a mounting cup. FIG. 16 is a perspective view of one of the flexible fingers of the device shown in FIG. 15; FIG. 17 is a sectional view taken along line 17-1-7 in FIG. 15. FIG. 18 is a sectional view taken along line 18-18 in FIG. 15. FIG. 19 is a sectional view taken along line 19-19 in FIG. 15. FIG. 20 is a partial cross-sectional view of a preferred apparatus for use in advancing gasket material to a desired location on a mounting cup. FIG. 21 is an enlarged partial cross-sectional view of the galley/jasleep, mounting cup and gasket material in the fully advanced position. FIG. 22 is a plan view of the top surface of one piece of the centering device. Fig. 2D Fig. 2E Fig. 2F Fig. 6 Fig. 1O Fig. 11 Fig. 13 Fig. 11 Fig. +8 Fig. 22 Fig. 21 Procedure Supplement 11:, -F (Method) %
Formula % 1, Incident Indication 1982 Patent Application No. 16161
1 No. 3 Person making the amendment Relationship to the case Patent application population Bart, Henry, Abplanalp (and 1 other person); Agent Tameike Tokyu Building, 1-1-1 Akasaka, Minato-ku, Tokyo [Telephone (58. I) 0782.1 5 Date of amendment order Voluntary 6 Number of inventions to be increased by amendment Procedures Amendment December 18, 1980 I Box Office Director General 1, +l (Indication of the matter 1982 patent Petition No. 16
1611υYo Tairyo 2 Name of the invention Person of mounting cup for aerosol 111:3 Consideration for supplementary IF Relationship with the incident
Patent application population: Bart, Henry, Abplanalb 4 Agent Tameike Tokyu Building 5, Akasaka 1-1@t/1, Minato-ku, Tokyo Date of amendment order From
Issue 6 Number of inventions increased by Supplementary IF 8, Contents of Supplementary iE The following amendments will be made to the description of the amendment (Patent Application No. 57-161611) as shown in the attached sheet. 1. On page 32, lines 5 and 6, "Figures 15 to 21 show Φ." is corrected as follows. A preferred plunger that is advanced in two stages to its final position over the gasket material full mount cup in the second plunger position is shown in Figures 15-19 and 20-22, respectively. 15-19 illustrate a preferred apparatus for advancing the gasket material from its initial position on the mounting cup to the position shown in FIG. 15 after cutting the gasket tube. After heating, the mounting cup is moved from the plunger position of FIG. 15 to the final plunger position. In this device, advancement of the plunger and centering of the mounting cup is accomplished by a simple movement of advancing a reciprocating ram. This action is the normal method for advancing and centering the plunger. The centering device 208 includes an independent spring.
The action of the plunger shown in FIG. 15 is simple advancement due to the movement of the reciprocating ram, since the ram can be retracted as the plunger is advanced. In contrast, the apparatus shown in Figures 20-22 for final positioning of the gasket involves multiple operations: positioning and retraction of the centering device and advancement of the plunger. 2, page 32, lines 9 to 11, ``Has 202, fist...boa 204'' has r202. Boa 2
The part 206 inside the 04 is the bore 204.'' I am correcting this. 3. Correct column A on each of the following pages (rows) as shown in E*. Page (line) A
B24 (5) Part Surface 24 (2nd from 2nd) 44 4826 (Thursday)
80 8227 (2)
Piece Piece 9゜27 (3)
80 8234 (3)
Gasket Next, in Gasket 4, Figure 2A, as written in red on the copy of Figure 2A attached to this procedural amendment, r68J is changed to r66J, and "70j is changed to".
68”, respectively. 5. In Figure 2B, Figure 2B attached to this procedural amendment
As written in red on the copy of the diagram, r68J is "66",
and "70" will be corrected to "68". 6. In Figure 3, r32J is corrected to "r60" as written in red on the copy of Figure 3 attached to this written amendment. 7. In Figure 4, r32J is corrected to 160, as written in red on the copy of Figure 4 attached to this written amendment.

Claims (1)

[Claims] (Gasket having 13 panel parts, a skirt part, and a groove part) When mass producing a mount cup for Y-carrying aerosol, (a) a mount cup on the mount cup skirt part and beyond the mount cup panel part; forming a band of gasket material that extends (kl) such that the edge of the gasket material remote from the mounting cup groove section ends at a position at or below the peripheral edge of the mounting cup panel section; (C) heating the band of gasket material; and (C) heating the band of gasket material;
cl) A method for mass production of a gasket-bearing aerosol mounting cup as described above, comprising advancing a band of gasket material to a desired position on the mounting cup while simultaneously imparting compressive deformation to the gasket material. (2) The method according to (1) above, wherein the gasket material is cooled subsequent to the formation of the rhizo portion thereof. (3) An apparatus for mass production of an aerosol mount cup carrying Gaskent and having a panel portion, a skirt portion hanging down from the peripheral edge of the panel portion, and an annular groove portion extending outward from the skirt portion, the device comprising: (a) (b) means for placing a band of gasket material on the mounting cup skirt portion such that the band end distal from the mounting cup groove'' portion extends beyond the mounting cup panel portion; (c) operation of the first plunger means for advancing the band of gasket material relative to the mounting cup skirt portion to a position at or below the panel portion periphery; means for subsequently heating the band of gasket material; and (d) retraction for advancing the heated band of gasket material onto the mounting cup skirt portion and within the groove portion to a desired location and imparting a compressive deformation to the band of gasket material. a second plunger means having a possible sleeve portion;
The above-mentioned aerosol mouth/cup large-value production equipment. (4) The apparatus according to item (3), further comprising means for cooling the band of gasket material subsequent to the operation of the second plunger means. (5) The device according to item (3) above, wherein the second plunger means has means for preventing movement of the gasketed mount cup when the sleeve portion is advanced or retracted. (6) The device according to item (5) above, wherein the second plunger means includes means for aligning the mount cup and the second plunger means. (7) The second plunger means has a recess defined by a plunger head portion and a retractable plunger sleeve portion, and means for preventing movement of the gasketed mounting cup when the sleeve portion is advanced or retracted is placed in the recess. The apparatus described in the preceding paragraph (5), using a (8) The device according to item (7) above, wherein the first second plunger means includes means for aligning the mount cup and the second plunger means in its recess. (9) The device according to item (7), wherein the means for preventing movement of the gasketed mount cup includes a piece that is deflected with respect to the mount cup when the second plunger sleep portion is advanced and retracted. 3. The device according to item (8) above, wherein the means for aligning the mount cup and the second plunger means is a device that is deflected with respect to the mount cup when the second plunger sleeve portion is advanced and retracted. (11) As a means for aligning the mount cup and the second plunger means, in addition to a means for preventing movement of the mount cup with a gasket, a device that is deflected with respect to the mount cup when the second plunger sleep portion is advanced and retracted is used; The device described in the preceding section (8). (12) The device according to item (3), wherein the second silancia means includes a plunger sleeve portion having a gasket contacting portion with an extension portion for imparting compressive deformation to the band of gasket material. (13) As a second plunger sleeve portion, the peripheral edge of the gasket contacting portion contacts the leading edge of the gasket material band at or just before the final advancement of the plunger sleeve portion to create compressive deformation in the gasket. The device according to the preceding item (12), which includes a gasket contact portion sized to cause the device to rise. 04) The device according to item (9) above, wherein the 82 plunger file has a gasket contacting portion with an extension portion that imparts an annular relief to the gasket material band. (The device described in the preceding paragraph (10) using a 151i22 plunger sleeve that has a gasket contacting part with an extension part that provides an annular lip to the gasket material band. (16) Second plunger sleeve part As a second plunger sleep part, the device described in the previous item αυ uses a gasket material pan having a gasket contacting part with an annular extension part attached thereto. α7) As the second plunger sleep part, the peripheral edge of the gasket contacting part includes a gasket contacting portion dimensioned to contact the leading edge of the slit material band at the same time or just prior to the final advancement of the blunting league portion to form an annular groove in the gasket;
The device described in the preceding paragraph 0 (a). (+81) As a second plunger sleep section, the peripheral edge of the gasket contacting section contacts the leading edge of the gasket material band at the same time or immediately before the final advancement of the plunger sleep section to form an annular groove in the gasket. The apparatus according to paragraph f151, using a device including a gasket contacting portion of dimensions A9 as the second plunger sleep portion, the peripheral edge of the gasket contacting portion being the final advance of the plunger league portion relative to the front line of the band of gasket material. The device according to the preceding paragraph (16), which includes a gasket contacting portion dimensioned to form an annular rib on the gasket by contacting the gasket at the same time or just before contacting the gasket. (20) The panel portion, the skirt portion, and the groove portion. Used for mass production of mount cups that carry gaskets.
Apparatus for advancing gasket material to a destination location on a mounting cup, said gasket material advancement device comprising plunger means having a retractable sleeve portion having a gasket contacting portion for imparting compressive deformation to the gasket material. . (21) The device according to item 120), wherein the sylanger means has a means for preventing movement of the gasketed mount cup when the sleep portion is advanced or retracted. (22) The device according to item (21), wherein the plunger means includes means for aligning the mount cup and the plunger means. (As described in the previous item 0υ, the plunger means has a recess divided by a plunger head portion and a retractable plunger sleep portion, and a means for preventing movement of a mount cup with a gasket is placed in the recess. (2) The device described in the previous section (c), which uses a means for aligning the mount cup and the sylanger means in the recess as the sylanger means. hand to prevent
. The device described in the preceding paragraph (2 (support)) using a step that includes a part that is deflected with respect to the mount cup when the plunger sleep portion is advanced and retracted. (26) Aligning the mount cup and the plunger means As a means for aligning the plunger means, the device described in the preceding paragraph (24J) uses a device that is deflected with respect to the mount cup when the plunger sleep portion advances and retracts. (27) As a means for aligning the mount cup and the plunger means, a gasket is used. 1. The device according to item C24) above, which uses a movement prevention means for the attached mount cup and a device that is deflected with respect to the mount cup when the plunger sleep portion advances and retracts. (C) Panel portion and the peripheral edge of this panel portion and a skirt portion which is integral with the skirt portion and which extends downward and further outwardly to form an annular groove portion that fits into the bead of the receiving vessel opening, and the gasket material is inserted into the junction point on the skirt portion. a mounting cup with a gasket, the gasket having a gasket on the mounting cup, such that the gasket material extends from below into the groove portion and outward of the inside diameter of the head of the receiving vessel; The above-mentioned mount cup with a gasket is characterized in that, following the positioning at the target position, a compressive deformation is applied to the outer surface of the gasket. 28) The mount cup with a gasket according to the above item. (3) The mount cup with a gasket according to the above item, in which the gasket is deformed by a series of radial lips extending in the width direction of the gasket.