JPS61259945A - Neck section end section of glass vessel - 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 Field of the Invention The present invention relates generally to new and useful improvements in glass containers of the jar and bottle type, and more specifically to neck-type glass containers. It concerns a neck end suitable for resealing, the end being specially shaped to work with well-known PT closures and constrained twist closures.

BACKGROUND OF THE INVENTION Conventional PT enclosures include a shell with a liner therein, usually made of plastisol. The liner includes an annular portion carried by an end panel of the enclosure, the annular portion being carried by an end panel of the enclosure.
The generally cylindrical portion is in sealing engagement with the end of the neck in a generally cylindrical portion that is in line with the neck. In use, the closure is pressed onto the neck end and the cylindrical liner portion flows around the plurality of lead screws at the neck end, sealing the closure into sealing relationship with the glass container. Hold it tightly. When the closure is opened, the closure is rotated or twisted and the screw pulls the closure away from the container.

Re-sealing of PT caps has always presented a difficult problem and has been a major obstacle to the use of such caps. At the end of the glass neck of a typical fine lead, it is difficult to reuse the seal by twisting and pressing the seal. The threads formed in the sealant (plastisol) do not easily engage over the threads at the end of the glass neck, and when attempting to reseal the cap, one side of the cap may engage the threads on the other side. A problem occurs in which the two sides do not mesh with the same screw. If reloading is initiated in this way and the contents are those that need to be shaken prior to use, the cap will fly off and the contents will spill out.

Also, in the case of a poorly resealed closure, there is a risk that the bottle and its contents will fall out if the container is lifted by the closure only.

SUMMARY OF THE INVENTION According to the invention, a modified neck end for a glass container is provided, in particular a neck end shaped to be closed by a PT closure. ing. The present invention relates primarily to a neck section with multiple single-head screws, which are initially utilized merely to facilitate the removal of the enclosure, and which are then used once the enclosure has been pressed onto the container. It should be appreciated that the threaded mold section is threaded into the cylindrical liner portion of the PT envelope. In other words, the neck end provided in accordance with the invention is such that the skirt portion of the envelope includes a metal or plastic part which is initially screwed for torsion pressure or rolled onto the neck end. This means that it is not intended to be used with enclosures that are subject to movement.

The improved neck end has a threaded portion whose width increases from the lead introduction portion of the thread, a neck end that is stepped or beveled above the thread, and an outer surface of the neck end that is stepped or beveled above the thread. Features such as a threaded portion that is conically arranged, a threaded portion with a generally flattened rectangular cross-section, a threaded portion with a generally double starting lead and a flattened outer central surface. contains parts.

The present invention will be described in more detail below with reference to the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to the accompanying drawings in detail and turning first to FIG. 1, there is illustrated a conventional PT enclosure generally designated by the numeral 20. The enclosure has a metal shell 22 that includes an end panel 24 and scars 1-26. Note that the skirt terminates in curls 28. The shell 22, in the illustrated embodiment, is formed of metal and is provided with a liner (indicated generally by the numeral 30) of a suitable deformable material such as plastisol. The liner 80 includes an upper annular section 32 that seats against the underside of the outer portion of the end panel 24. The liner 30 also includes a generally cylindrical portion 34 located inside the skirt 26.

As previously mentioned, this conventional PT closure is pressed onto the glass neck end of the glass container, and the threads at the neck end form complementary threads into the cylindrical liner section 34 to tighten the seal. Facilitates removal of the body from the neck end by twisting action.

1 to 5, there is illustrated a glass container, designated by the numeral 36, with a neck end according to the present invention. The neck end is indicated by the number 38 and is thick-walled to facilitate resealing of the container 36 with the closure 20.

As best shown in FIG. 4, neck end 38 includes an extremity 40 that mates with liner portion 32 and forms a seal with enclosure 20. As best seen in FIG. The neck end 38 immediately below the end 40 is stepped radially inwardly and tapers axially upwardly and radially inwardly;
Defining a tapered extreme end portion 42 of neck end 38 . Below the resulting step 44, the neck end has a constant diameter to define a threaded base 46.

The threaded base 46 terminates in an annular rib 48.

If desired, a bead, such as bead 49, projecting radially outwardly and spaced axially downwardly to a greater extent than the ribs can be provided.

Said threaded base 46 has a plurality of threads 5o projecting radially outward therefrom, each thread 50 having its own distinct lead tip 52.

As can be seen in FIG. 3, a plurality of screws 5o terminate in respective beams 748, and as can be seen in FIG. Please note that they are spaced apart.

Preferably, these screws overlap each other as shown in FIG.

A particular feature of each screw 5o is that in addition to having a rounded lead 52 as a rest, each screw has a width extending from the lead tip to the bottom connection with the rib 48.
This means that it is slanted.

Referring now to FIG. 5, the liner section 34 was initially generally cylindrical, but when the PT seal 20 was added, the threads 5o created a complementary threaded shape in the liner section 34.
It will be understood that it is cut into the constituent material of No. 4. Thus, the installed PT envelope can be easily removed by twisting action.

The difficulty lies not in initially fitting the PTI body or its seal to the container. As previously mentioned, the difficulty lies in resealing the container with a closure. The components of liner 30 are extremely soft and have excellent moldability.
υ, it should be understood that the screw 50 cannot be fully reinserted into the thread formed in the liner unless the seal is properly positioned relative to the neck end. However, if the uppermost section of the neck end is tapered and offset radially inward to form surface 42, a general straightening effect is achieved on the enclosure. This Taber angle, designated angle A, may be of the order of 4°±1°.

In addition, each of the tapered widths of the screws 5o includes one wide thread groove at the lower edge of the cylindrical liner portion 34, in which the said tapered ends 5 of the screw
2 can easily enter.

The combination of the aforementioned properties of the neck end allows containers provided with such a neck end, where the closure is a PT cap, to be resealable.

Next, referring to FIGS. 6 and 7, number 60 is shown in FIGS.
The neck end indicated by is illustrated. The end 60 is the end 6
2, the outer surface of the neck end proximate to the circumferential edge is sloped to define a generally conical surface 64, which surface 64 is radially inwardly offset and stepped. 66. The taper of the surface 64 forms an angle of 8, which may be on the order of 2°±1°. Below step 66 is another sloped outer surface 68 of the neck end, which surface is sloped at an angle C of the order of 7°±2°.

The surface 68 terminates in a cylindrical tortoise 70;
A plurality of circumferentially spaced screws 7 are connected to the bottom of the screw.
2 is formed, which thread can be of normal cross section terminating in the rib 74. In this case as well, beads 76 may be provided below the ribs 74 and spaced apart in the axial direction.

The sloping surfaces 64,68, together with the radially inward steps of the surface 64, align the cap with the neck end and thereby prevent screws from engaging within threads formed in the cylindrical liner portion 34. Provides a starter surface for easy cleanup.

8 and 9 illustrate yet another neck end, generally designated by the number @80. The neck end 80 is an end 82 sealed by the liner of the PT cap.
is defined. on the outer surface of the neck end near end 82; A sloped surface 84 is provided which is stepped radially inward to define steps 86.

Below step 86 is another inclined surface 88 .

The sloping surface 88 terminates in a cylindrical threaded base 90. The surface 84.88 is the surface 64.88 of the neck end 60.
Please understand that it is compatible with 68. The thread base 90 terminates in a rib 92 and above the rib 92 the thread base 90 has a plurality of threads 94 projecting therefrom, each thread having an angled lead 96.

The screw 94 terminates within the rib 92 and the gap between the bottom portion of the screw 94 and the gate of the rib 92 can be filled as at 98.

The radially outer surface of the thread lies along a conical path, the circuit pointing radially inwardly and upwardly at an angle that may be on the order of 2.5° +1°, -2°. is inclined to. Neck end 90 is similar to neck end 60 except for the threaded taper. The bevel of the threads results in a larger diameter groove, which results in a much greater depth at the inner edge of the liner section 34, and this, and the alignment action of the surfaces 84, 88, result in a larger diameter thread. This facilitates re-engagement V with the neck end of the PT cap.

10 and 11 illustrate yet another neck end, generally indicated by the numeral 100. The neck end 100 defines an end 102 for forming a seal with the liner portion 32 of the PT envelope. The upper outer surface of neck end 100 near end 102 is stepped radially inward to define step 104 and is sloped at an angle E on the order of 4°±1°. A sloped surface 106 is defined. Below the step 104 is a threaded base 108 which is inclined axially downwardly and radially outwardly at an angle F of the order of 3°±1°.

A screw 110 projects from the screw base 108 and includes a lead 112. Thread 110 terminates within an annular rib 114. As can be seen in FIG. 11, screw 110 has a generally flat rectangular cross section. Furthermore,
From FIG. 10, each of the leads 112 can be bifurcated as a whole.

Given the fact that thread base 108 is sloped, thread 110 is also sloped at a similar angle.

The inclined surface and the inclined screw cooperate to form a PT
This facilitates re-tacking of the threads within the threaded grooves molded into the enclosure liner.

12 and 13 illustrate another neck end, generally indicated by the numeral 120.

The neck end 120 is similar to the neck end 100;
It includes a sealing end 122. The outer axially outer portion of the neck end 120 is in the form of an angled surface 124 that is stepped radially inwardly to define a step 126 . The slope of surface 124 forms an angle F on the order of 4°±1°.

Below the step 126, the threaded base 128 slopes downwardly and radially outwardly at an angle G on the order of 4°±1°. This surface terminates in a beam 130.

A plurality of screws 132 project radially outwardly from the screw base 128 and include individual leads 134 as best shown in FIG. The lead screw 1
34 is generally flat in shape, with a flat radially outer uniform diameter surface 136, as best shown in FIG.

The neck end 120 performs substantially the same function as the neck end 100, re-engaging its threads 136 into threads formed in the 4° PT seal cavity. .

It should be emphasized again that each of the aforementioned neck ends is provided with a liner made of a suitable composition such as PT1, such as plastisol, and an enclosure is placed on the neck end. The necks disclosed and claimed herein are specially configured for use with PT closures of the type in which the neck end mold threads are pressed and threaded into the cylindrical liner section. A closure whose end is pre-threaded and is twisted onto the container or which is placed on the container and the screw is then inserted into the skirt of the container. It is not intended for use in

Although only some preferred embodiments of the invention have been illustrated and described, minor changes may be made to the neck end without departing from the spirit and scope of the invention as defined by the claims. I hope you understand that.

[Brief explanation of the drawing]

FIG. 1 is a fragmentary elevational view of the upper portion of a glass container with a neck end according to the present invention, illustrating in cross section a conventional PT closure attached to the upper portion. 2 is a plan view of the neck end of the container in FIG. 1, taken along line 2--2 in FIG. 1; FIG. 3 is an exploded view of the neck end of the container in FIG. Figure 4 is an enlarged fragmentary cross-sectional view taken along line 4-4 showing a particular cross-section of the neck end; Fig. 5 is a fragmentary sectional view similar to Fig. 4 with the P T 11 body or cap attached, Fig. 6 is a fragmentary exploded view of the neck end in another form, and Fig. 7 is a fragmentary cross-sectional view similar to Fig. 4. 6 is an enlarged fragmentary cross-sectional view of the neck end of FIG. 6 taken along line 7--7 of FIG. 6; FIG. 8 is a fragmentary layer m1 view of the neck end of another configuration; The figures show an enlarged fragmentary IIi cross-sectional view of the neck end of FIG. 8 taken along line 9--9, FIG. 10 is an enlarged fragmentary cross-sectional view of the neck end of FIG. 10, FIG. 12 is an exploded view of the neck end of a further alternative configuration, and FIG. FIG. 13 is an enlarged fragmentary cross-sectional view of the neck end of FIG. 12;

Claims (12)

[Claims] (1) Jar and bottle type glass containers,
The glass container has a neck end with a contouring device specially shaped for use with a press-and-twist type closure having a skirt with a generally cylindrical liner of deformable plastic material. at a neck end of a glass container, the neck end having a plurality of lead screws forming complementary threads in the liner when the closure is applied; A neck end of a glass container, characterized in that the neck end of a glass container is improved by providing a resealing device to facilitate remating of the neck end screw with the complementary screw in the liner. (2) In the neck end of a glass container according to claim 1, the resealing device is a radially outer circumferential surface above the neck end screw that is stepped and typically a radially outer circumferential surface including an axially outer section set radially inwardly from the neck end and an axially proximate section extending axially downwardly toward the neck end thread; and wherein said axially adjacent section flows downwardly and radially outwardly through an angle of the order of 7 degrees until it reaches the bottom diameter of said neck end thread. Neck end of glass container. (3) In the neck end of the glass container according to claim 2, the radially outer surface of the neck end extends downward in the axial direction and outward in the radial direction. neck end. (4) In the neck end of the glass container according to claim 1, the resealing device includes a radially outer surface of the neck end that extends axially downwardly and radially outwardly. A neck end of a glass container characterized by: (5) In the neck end of the glass container according to claim 2, both the threaded bottom diameter portion and the radially outer surface of the neck end expand downward in the axial direction and outward in the radial direction. A neck end of a glass container characterized by a (6) In the neck end of the glass container according to claim 1, the resealing device extends axially downwardly and radially outwardly from the threaded bottom diameter and the neck end threaded radius. 1. A neck end of a glass container, characterized in that it includes both an outer surface. (7) The neck end of a glass container according to claim 6, wherein the screw has a flattened, generally rectangular cross section. . (8) A neck end according to claim 6, characterized in that the screw has a flattened, generally rectangular cross-section and a double-nose starting end. the neck end of the glass container. (9) A neck end according to claim 1, wherein the resealing device has a flattened generally rectangular cross section and includes the screw with a double-nose starting end. A neck end of a glass container characterized by a (10) At the neck end of a glass container according to claim 1, the screw has a flattened generally rectangular cross section and is provided with a flat central peripheral surface. The neck end of a glass container. (11) A neck end of a glass container according to claim 1, wherein the neck end of the glass container includes the thread whose width increases from the lead end. (12) At a neck end of the glass container, the screw protrudes radially outward from a cylindrical bottom extending axially upwardly of the glass container, and the neck end projects radially inwardly above the cylindrical bottom axially. A neck end of a glass container characterized in that the neck end is stepped and generally slopes axially upwardly and radially inwardly toward the free end of the neck end.