JPS6013655A - Manufacture of welded cover assembly and cover assembly - 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 TECHNICAL BACKGROUND OF THE INVENTION This invention relates to an improvement in the closure or canknob of a pharmaceutical container or bottle, and more particularly to a new and improved means for securing a removable part to a camp. The present invention relates to a lid having an attachably secured removable portion.

Some types of camp-style lids for pharmaceutical containers typically include a pierceable closure, such as a rubber stopper, that fits over the mouth of the container;
It is sealed by a camp that securely holds the stopper by fitting it onto the shoulder of the neck of the bottle.

Traditionally, these metal caps have included a removable central disc with an integral removable cover attached thereto. This is fitted by the user in order to pry the cover against the camp, and breaks the joint that connects the central disk to the outer part of the metal camp, thereby exposing the stopper. The contents are aspirated through the stopper with a hypodermic needle.

This common type of lid assembly is not new per se. For example, Raven Patent No. 3.071, -274
In the above, the plastic outer lid has a central depending portion that fits into an aperture in the removable disc of the camp at the location. When the cover is pushed up by the user's finger, the disk that is easily torn apart is removed, exposing the round stopper that fits into the mouth of the container.

While this lid is very useful, it also has drawbacks that this invention solves. For example, the jagged edges that result when the disc is removed can be damaged by human hands. Additionally, the force required to remove the disc will vary depending on the environmental conditions to which the cover unit is subjected.

And even if the removal force is made with the same tolerance, it will differ from camp to camp.

The applicant's patented invention then shows the same type of lid which is modified in the manner in which the cover unit is attached to the removable disc of the metal cap. For example, in Anderson Patent No. 3,358,865, a central removable disk is similarly connected to the outer periphery of a metal cap by a circumferentially spaced turn joint. However, in this example, the central disc has a button-like ridge that fits into the central aperture of the camp and is driven into place. This cap assembly has the same drawbacks as the Raven's cap and is slightly more expensive to manufacture.

LaBarge patent 3.369.692 is similar to Anderson patent 3.358.865. However, in this example, since the cap is metal and the neck of the button is not circular, the button and disk can be removed by twisting the cover together.

No. 3.547.297 of Verbert shows a lid assembly similar to that described above. However, in this example the disk is connected to the outer part of the metal cap by a partial indentation. However, the cover is Raven's patent No. 3.071.
It is connected to the removable disc section in the same way as No. 274. This lid also serves its intended purpose. but,
This also has high manufacturing costs. Furthermore, the opening in the metal cap that receives the hanging portion of the integral plastic cover provides an entry path for foreign matter, creating the possibility of contaminating the stopper.

That is, the partial nicks eliminate the possibility of contamination paths such as bacteria. The opening formed in the cover serves as another path, and the cover as a whole is not completely sealed due to the opening formed in the cover.

Anderson's patent No. 3.379.326 shows a number of embodiments in which the cover has attached legs or a continuous skirt, the lower part of which is bent against the metal camp to expose the plug. It fits into a central hole in the metal camp that rips when the cover is moved. On the other hand, according to this configuration, it is possible to eliminate jagged edges that occur when removing the central disk portion from the camp. However, this cab assembly is slightly more expensive to manufacture. Furthermore, in some embodiments, the removal force is not necessarily uniform at all fitting parts of the cover. Additionally, there is no guarantee that the entire lid, consisting of a metal cap and cover together, will provide a perfect seal.

Other useful wing assemblies are shown in the following prior patents:

US Patent Number Inventor Publication Date 3, 193.128 Renven July 6, 1965 3
, 446.170 Anderson May 27, 1969
Sun 3.587.897 Rope June 28, 1971 With these things in mind, the object of the present invention is to provide a lid assembly of the type mentioned above which is free from the risk of damage, in order to expose parts such as the stopper. The purpose of this invention is to provide a lid assembly that is characterized by a new structure and arrangement that allows for uniformity and adjustment of the force used to peel off a portion of the camp, and that is less expensive to manufacture than the aforementioned lids. do.

Another objective is to provide a lid assembly that is truly tamper-proof and completely sealed.

To this end, the lid assembly consists of a metal cap having a top plate followed by a skirt, the cap being adapted to hold the rubber stopper in place on the container.
Condense the lower part into the container. Further, an embodiment is included in which the top plate is formed with partial notches and connected to form a removable portion.

The outer surface of the metal camp, preferably made of aluminum, is covered with a thin plastic film such as polypropylene (
Covered with a plastic lacquer, a lacquer based on polypropylene. In these examples, the metal outer lid is covered with a thin plastic film or layer.
The coating is preferably approximately 1 w* thick. In the example of a metal lid covered with a plastic-based lacquer film, the thickness of the film is preferably Q, approximately 1 mm.

The lid also has a cover or button, preferably made of plastic, which is partially heat- or ultrasonically adhered to the removable portion of the metal lid. In use, the user hooks the periphery with his/her finger and moves the detachable part along the connecting part to expose the stopper.

Caps are easy to manufacture, inexpensive, and easy to use on containers. Furthermore, the surface on which the button is attached to the camp can be arbitrarily changed by adjusting the attachment force or the adhesive force that should give a uniform removal force.

Assemblies can be disinfected individually and assembled, or can be disinfected after being placed in containers. Final disinfection is usually chosen. In any case, the surface of the stopper that is exposed when the cover is operated is already disinfected. Furthermore, the assembled lid is completely secure and provides a tight seal between the container and the lid.

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, and in particular in FIGS. 1-9, a non-alterable lid assembly according to the invention is shown. The lid, generally indicated by the numeral 10, is fitted to hold a stopper 12 fitted into the mouth 11 of a container, such as a bottle 14 shown in FIGS. 8 and 9. This stopper 12 is an ordinary standard one, and is designed to fit tightly into the mouth 11 of the bottle.
8 and a top portion 22 that covers the shaft end surface 24 of the neck of the bottle, and is seated on this end surface.

The post 18 has a thin central wall 28 on its inside 26 for penetrating, for example by a hypodermic needle, for aspirating the contents of the bottle. The stopper 12 may be of any conventional shape, and the invention is not concerned with any particular shape of the stopper. The stopper may be of any shape.

The closure enclosing the closure comprises a cap 29, preferably made of sheet metal such as aluminium, which is generally tip-shaped and consists of a top 30 and a following skirt 32, which in the finished state encloses the closure 12 with the cap 29. It is fastened under the shoulder 33 of the bottle in a hugging manner. In this example, the top 30 has an inverted dish-shaped central disk 34 connected to the outer annulus by a slightly recessed annular notch or groove 38 . In this example, the central disk portion 34 has a camp having a cross section T.
Groove 3 whose thickness is reduced at s and forms a break line
Continuous partially scored annular line 3 formed on the outer surface 40 of 8
9 is removably connected to the outer ring 36.

The lid assembly also includes a cover unit 42, preferably a plastic layer such as polypropylene.

It is attached to the disc part 34, and as shown in FIG. 9, the user puts his finger on the end 44 and pushes up the cover assembly 42, thereby opening the disc part 34 away from the groove 39.
The stopper is exposed so that the contents can be sucked out with a syringe needle.

In accordance with the invention, the cover unit 42 is adhered to the camp's removal disc 34 by a new means that ensures a tight seal of the lid when assembled enclosing the stopper. This is easy and economical to manufacture.

For this purpose, the outer surface of the camp 29, at least in the area of the inverted dish-shaped removable disk 34, is provided with a thin layer of material 45 having a predetermined thickness Tpp.

The portion is then attached to the top of the camp by conventional means such as heat or the use of adhesives, and bonded to the cover unit 42 using heat and pressure. A polypropylene layer is suitable for this purpose.

The cover unit, as shown in FIG. 4, is generally dish-shaped and has a short radial flange 46 at the top of its outer periphery.

It has a rounded inward shoulder 48 so that the top of the cap and the skirt fit together (embracing). Also, the cover 42 has a shape that fits into the inverted dish-shaped part 34 of the top of the camp. A circular depending flange 50 is also formed forming a blur 1-50a.

Such a configuration provides a large adhesive surface "X" formed between the polypropylene-covered dish of the camp and the cover body 42 within the boundaries of the notch 39. This adhesion can be obtained by heat compression bonding or ultrasonic welding.

The large adhesive area formed between the camp dish 34 and the cover 42 can be achieved by prying the cover integrally against the cap, forming the partial notches 3, as shown in FIG.
Sufficient strength is obtained to ensure separation of the camp dish 34 along 9. It is desirable that the diameter of the notch 39 is smaller than the diameter D1 of the adhesive surface X.

The adhesive surface X between the camp and the cover can be changed or determined as desired so that the dimensions of the camp and the depth of the notches can be changed, and the force required for removal can be adjusted within a predetermined range.

However, in all cases, the adhesive force between the cover 42 and the cap 7 needs to be greater than the force that breaks the notch 39 in order to move the cover 42 and ensure separation of the camp disc 34. . The depth of the notches must be adjusted so that the disk does not open too quickly during handling or during handling during manufacturing, and so that it opens easily during use.

In the embodiment described above, the cover and the camp are automatically aligned by the dish formed in the cap and the pocket 50a formed in the cover by the flange 50 to fit therewith. So covers and camps are easily and accurately manufactured by automatic high-speed feeding combination equipment.

An example of preferred relative dimensions for a 13 dragon lid according to the invention is shown below.

D - Diameter of notch 39 - 5,36 (0,211 inches) DI - Diameter of adhesive surface X - 5,21 (0,205 inches) TIll - Camp"29 (7) Thickness - 0,18 mm
(0,00 inches) Ts - Thickness of cap notch 39 10, 08~0
．． 1 basket (0.003-0.004 inch) Tpp - Thickness of plastic layer 45 - 1 mm F - Separation car approximately 1.5 kg (3.4 lb) measured around cover 42 These dimensions and relationships are: It can be changed depending on the size of the lid.

The lid assembly according to the invention is easy and economical to manufacture.

For example, polypropylene-coated aluminum discs can be manufactured by stacking flat plates and stamping them into the desired shape of the cap, such as that shown in FIG. Further, with respect to FIGS. 14-17, for example, the notch 39 is formed by interposing the upper shaping mold 200 reciprocating relative to the lower split mold 202 having a cutting edge 203 in the camp.

The notched cap is assembled with the cover 42 and the first
5. It is assembled by heating and pressing as shown in Figure 16 or by ultrasonic welding as shown in Figure 17.

As shown in FIG. 15, the cover 42 is received by an alignment support (jig 205). The cap is placed on the abutment point of the cover. As shown in FIG. 16, an electric heating element 204 having a mold section 204a forming the off-center disc section of the cap is applied thereto, applying heat and pressure to the central section. This creates the desired adhesive effect between the cover and the polypropylene layer of camp 29.

Note that the part of the cover outside the notch is placed away from the annular top 30 of the camp so as to prevent adhesion between the cover and the camp in this part.

The method shown in FIG. 17 differs only in that it uses an ultrasonic head 206. This heats only the portion of the cap inside the notch 39 to achieve the desired adhesion effect to the cover.

Closure is achieved by placing it over the stopper of the container and tightening the bottom end.

Polypropylene 45 attached to aluminum cylinder
Alternatively, it may be coated with polypropylene lacquer. Of course, it is also possible to coat the camp with other economically possible thermofusible adhesives.

Another embodiment of a lid assembly according to the invention, which embodies the principles of the invention described above, is shown in FIGS. 10-13. In the embodiment shown in FIG. 10, the top 60 of the plastic coated camp 62 has a central hole 64, and the cover 66 has a diameter D of the hole 64 in the top of the camp.
Circular depending flange with inner diameter larger than 6゛8
is provided. The inner circumferential surface 70 of the flange 68 is flat and is adapted to be welded to the cap using heat and pressure methods similar to those of the previous embodiments. According to such a configuration, the welding surface X'' is determined by the inside of the surface 70 of the flange. The same method is used to push up the cover 66 and size it to provide the appropriate force to break the welds.This lid assembly is also easily and economically manufactured. Even if the welded portion between the flange 68 of the cover 66 and the top surface of the cap is torn, it can be re-welded by applying heat and pressure, thereby ensuring prevention of breakage.

According to the embodiment shown in FIG. 11, a polypropylene coated cap 80 similar to the embodiment of FIG. 10 has a circular aperture 82 in its top 84. Also in this example, the plastic layer 86 is circularly scored on the outside 96 of the hole at the top of the cap 80.

In this example, the cover 97 has an axial bulge 90;
It creates a step forming a central column and fits into a circular hole 82 in the camp. Then, an annular shoulder portion 94 is formed on the outer periphery of the trunk portion 92. The annular shoulder 94 is then welded to the cap by applying heat and pressure.

In this embodiment, the notches are only in the plastic layer 86, and the aluminum camp 80 is not scored and is of uniform thickness. The welded part X” is the camp plastic layer 8
6, so when the weld is broken with the cover, the plastic annular band will peel off cleanly from the notch and stick to the cover.

As mentioned in the previous embodiment, the welding surface X" is varied appropriately depending on the size of the lid to provide sufficient welding force to transmit a force from the cover to the cap that is greater than the force required to cut the notch 96. It will be done.

The stem 92 fits into the aperture and has the effect of facilitating proper placement of the parts during the welding process.

FIG. 12 shows a lid assembly similar in operation and function to the basic embodiment. However, in this example, the top 100 of the camp 102 is flat and the score line 104 is
06 to reach the aluminum top plate, and the removal part 111
is formed. The cover 110 has a central depending projection 112 with a diameter D3 smaller than the diameter D4 of the removal portion 111 formed by the notch 104. The cover is welded to the cap by the aforementioned method of applying heat and pressure.
This is in the plane of the protrusion indicated by ``.

In this example, the cap is removed from the notch by pressing the cover, but the adhesive force of the area X″' that holds the cover is 10
Step 4, make the force greater than the force required to peel off the removal portion 111.

FIG. 13 is similar to FIG. 12 except as follows. In this example, the top plate 120 of the camp 122 to which plastic N123 is welded has a shallow concave dish portion 124 . Then, the protruding portion 130 of the cover 128 just fits into this dish portion 124.

The welding force that joins the cover with the area X''''' and the camp is made larger than the force that tears off the removal portion 135 due to the notch 133. Then, when the cover is removed, the notch 13 will appear on the cover.
3 comes with a removal part 135. That is, the cover 128 is pushed open, the disc 135 is removed, and an opening is formed in the center of the cap.

In this example, the notch 133 extends through the plastic N123 to the top plate 120 of the camp.

The contents of the container can be aspirated with a hypodermic needle.

Fitting the protruding portion 130 into the recessed dish portion of the detachable portion 135 facilitates accurate placement of components during bonding work.

The cover and camp of the embodiment shown in FIGS. 10 to 13 are welded together by the above-described joining method of the main embodiment. The method is similar to that shown in FIGS. 14-17.

Although individual embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Changes and modifications can be made within the scope of the claims.

The preferred embodiment of the lid according to the present invention described above was an aluminum metal cap coated with a polypropylene plastic material, but CAMP uses the above-mentioned method of welding the cap and cover to designated areas only. Of course, it may be made of other materials, such as various types of plastics, which may be ultrasonically or otherwise welded to the cover.

[Brief explanation of the drawing]

The object according to the invention, the features and details of the lid assembly according to the invention and its manufacturing method are shown with particularity in the accompanying drawings. Figure 1 is a side view of the lid assembly according to the present invention before it is attached to a container, Figure 2 is a plan view of Figure 1, Figure 3 is a perspective view of the cover removed from the cap, and Figure 4 is the cap. Figure 5 is an enlarged cross-sectional view of the part circled by the broken line in Figure 4, Figure 6 is a cross-sectional view of the assembled cover, and Figure 7 is the broken line in Figure 6. Fig. 8 is an enlarged partially cutaway sectional view of the joint part circled in Fig. 8 is an enlarged partially cutaway sectional view showing a lid assembly used for a container such as a medicine bottle, and Fig. 9 is a partial enlarged sectional view showing the lid assembly used for a container such as a medicine bottle. The same view as FIG. 8 with the top surface exposed, FIGS. 10, 11, 12 and 13 are cross-sectional views of other embodiments of the lid according to the invention, and FIGS. 14 to 17 are the lid manufacturing apparatus according to the invention, FIG. 2 is a schematic diagram showing the method. In the figure, 12 is a stopper, 14 is a container, 29 is a camp,
34 is a dish-shaped portion, 38 and 39 are notches, and 42 is a cover. Agent Patent Attorney Yoshi Saigo Bisho Nei Shisho (self-motivated) August 29, 1980 Commissioner of the Patent Office Kazuo Wakasugi 1, Indication of the case Patent Application No. 115275 1982 2, Name of the invention fused Relationship between the manufacturing method of the lid assembly, lid assembly 3, and the case of the person making the amendment Patent applicant address Phoenixville, Pennsylvania 19460, United States of America (no address) 4, Agent 105 TFt 03-438-224
r (Representative) Address: 3-4-17 Toranomon, Minato-ku, Tokyo 6; Subject of amendment: Drawing (no change in content); 7; Content of amendment: As attached.

Claims (1)

[Scope of Claims] 1. A pot-shaped cap having at least a part that can be welded, the part being provided so as to be removable by means that can be peeled off from other parts of the cap,
A lid for a container comprising a cover integrally welded to the removable part, and by not moving the cover integrally, the removable part can be removed from other parts of the camp. 2. The cap has an inverted dish-shaped part in the center of the top plate and an annular partial notch on the outside thereof, and the cover integrally has a depending flange forming a pocket part that fits into the inverted dish-shaped part of the cap; A lid assembly according to claim 1, wherein the lid assembly is welded on the inner surface of the notch. 3. The lid assembly according to claim 2, wherein an outer surface portion of the depending flange integral with the cover is installed apart from the outer peripheral surface of the cap. 4. The lid assembly according to claim 1, wherein the camp has an opening in the center, the integral cover has an annular hanging projecting flange, and the flange surface and the outer side of the cap opening are welded. Goods. 5. The integrated cover has a stepped hanging protrusion in the center, the center of the protrusion fits into the opening of the cap, and the shoulder on the outer periphery of the step fits into the opening of the cap. 2. A lid assembly according to claim 1, wherein the lid assembly is bonded to an adhesive layer around an aperture inside an annular notch on the outside of the lid. 6. The top plate of the cap is provided with a continuous partial notch forming a removal portion, and the cover unit having a depending projection is adhered to the interior within the boundaries of the notch.
Lid assembly as described in section. 7. The lid assembly according to claim 6, wherein the depending protrusion is stepped, and the protrusion fits into a dish-shaped pocket provided in the disk portion of the cap. 8. Consisting of a kelp-shaped camp body having an outer circumferential part separated by partial notches and a removable disc part on the top, and an adhesive layer on the surface, and a cover adhered to the removable disc part, The disc part can be removed by not moving the cover unit relative to the cap, and an adhesive layer is attached to at least the outer peripheral surface of the core part and at least to the disc part, and the cover unit is attached to the camp disc part. A method of manufacturing a lid assembly, which comprises fitting the lid assembly to the disc part and adhering it to the disc part. 9. The method of manufacturing a lid assembly according to claim 8, wherein the adhesion is carried out by heat-pressing. 10. The method of manufacturing a lid assembly according to claim 8, wherein the cover is bonded to the camp by ultrasonic heating.