JPS6058388A - Method of sealing vessel with screw cap - 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 The present invention relates to a method for sealing a container with a screw cap; 'p
The present invention relates to a method for efficiently carrying out the over-the-moon operation in which the screw cap that seals the container is opened;

Conventionally, the contents stored in containers with lids are prevented from being removed, and the contents are guaranteed not to be opened (or the lid opened) during use by consumers. In order to
f ) type container lid has been proposed and put into practical use (
Publication, U.S. Patent No. 3. g
! However, these pilfer-proof container lids have the drawbacks of being complicated in structure, requiring high manufacturing costs, and high cost. .

Pilfer-proof type container: As a product that eliminates the drawbacks mentioned in -1- of
') Publication, Jitko Showa/-y33og>JiKoSho 3
-3-3776.5' Publication, 1985-2-2/3θ
- Is the cap of the structure described in Shijiko + Ii - / the method 1? 4. These gap sealing methods (, t/%) form a part whose strength is weakened by carving perforations in a cylindrical material made of heat-shrinkable material. It is placed over the open CI part of the container, heated and shrunk to reach the 1-1 part of the container, and is sealed from the soil of the lid. ”
-J In the method of sealing, it is necessary to form a portion that weakens the strength of the sealing cap to be used, and to form/stiffen a tab piece, which makes the manufacturing process complicated.

Furthermore, since the 4A material of the sealing cap is mainly made of polyester film or polyvinyl chloride, the opening of the container is not easily peeled off.
There was a drawback of not being able to snow. History (When parts 1-71 of the container are closed with a screw cap, the sealing gap will become idle and you will not be able to open the screw cap unless you firmly squeeze the sealing gap.) There are some shortcomings such as:

Under such circumstances, the present inventor has devised a product that is easy to manufacture, easy to process, has a beautiful appearance after sealing, and has easy-to-use line packaging for sealing. The purpose of this invention was to provide a method for sealing various containers with a screw gear opening that was easy to open. 97 things - (73) However, this brings us to the gist of the present invention (1-1 of each of the two types of screw gap examples) Biaxially stretched JB'rH whose rate is in the range of 20~go
A female mold is used from a styrene-based resin sheet; a Kokonobu molded product is molded by the 1' pressure molding method, and heat is applied between the 11 parts of the screw cap container and the -1 knob-shaped molded product. )V) Sex tree 1f! r Opening of a conozo-shaped molded product by covering it with soil or adhesive [ ] Adding the periphery ~, shrinking - Cs "): l : lt
:.

Screw key ＼′Tsupui・J-ki container lJ part 11C′
An example of a screw gap characterized by a gap opening]
There is a VC method for sealing stone tools.

13, below, the present invention will be explained in detail.

In the present invention, a screw gear knob (''＠￥?
A container is a container such as a bottle, with 11 parts of the container soaked in L-1 and a lid (cap) with a screw formed to match the 1 part of the container. Depending on the structure of the screw cap, there are names such as Prescrico-Cat9a-no-twist-off-gap, P-cap, P-cap, Alfunky-tub, etc.

According to the method V of the present invention, a container with a screw gap (
The heat shrinkage rate of the knob-shaped molded product that covers the second part ε is 2.
The difference FIjjQ shape method i/
c Therefore, use the first molded one.

Here, a polymer of run-based resin, SuJ-ren, α-mesolnoren, or a polymer containing these as the main component, 17,
This refers to a copolymer with other compounds that can be copolymerized. Other copolymerizable compounds include (rl, -]'acrylic acid,
Unsaturated carboxylic acids such as methacrylic acid and C!
Examples include the compounds of T. et al., acrylonyl-1), Getashev', and the like.

In order to manufacture a biaxial sheet from the above-mentioned Sujishi Yuno-based resin, it is necessary to use two known tenter-type high-pressure sheets.
Frey/Jonkaj ( should be adopted.

JI of biaxial 1!5 elongation-1 used in the method of the present invention
P salmon, 0.0! , '-o, ot inm range is 1
1-f-:i l-i.

Uniaxial jjE extension・2・-l-iT that can be used in the method of the present invention
J, the thermal contraction rate is assumed to be in the range of 20-IO.Here, the thermal contraction rate is the temperature of the hot air, /410 to ν and θC. θChljfz
Note 6:
person j1. ．． y.

hold for a minute, and then use the following formula K,, ))"I (
+(v(,'1.gi・j−i(′−)i,)1.''
'j3 refers to the large value.

The heat of the biaxially stretched sheet is 1i, and the shrinkage rate is θ%lv. 7 Sob shape 1J
ly form crystal (-), the strength is too weak, and the strength is too weak.
After covering it, it is heated and C is hard to shrink, and it tightly adheres to the 1" part of the container (,2 not υ', good size 16〈1.2 side 1
When the heat convergence of the processing zone exceeds the coefficient of θ, it is difficult to form four small-shaped molded products from this sheet by the differential pressure forming method using a female mold. It's so small that it doesn't look good. , ′-j Formability of tube-shaped molded products, strength of pot-shaped molded products, screw gasobuimaj@
Yong? Taking into consideration the shrinkage due to heating of the 111 part of H, it is preferable that the heat shrinkage rate is within the above range.

-1 to 6: A differential pressure molding method (using a female mold) is used to produce a tip-shaped molded product from a triaxially stretched styrene resin sheet. When molded, the two-knob-shaped molded product obtained is shown in the longitudinal cross-sectional side view in Figure 2 1.
Shown as (/C1 open [-1 part's wall thickness is thicker than other parts.) Cover L with slurry: 1---1 part of the container with 1 container, and make this cup shape. When the periphery of the opening of the molded product is heated, the periphery of the opening tends to contract inward, and this can be preferably brought into close contact with the 1-" part of the container. # When molded using a mold, the resulting small-tip molded product is 9
Figure 1:3 (This is a vertical cross-sectional view of 11411 and shown as
) t'+=, the meat at the opening is one mountain: 'ilj juice 6) 10 ha, L smaller. Put this JL into the mouth of the container and heat the periphery of this cup-shaped molded product, and the periphery will open. However, it is molded using a female mold/4
- In Fig. 2, 1 < Sheet = 1 Q, which is different from that of a tube-shaped molded product, is difficult to shrink inward, and it fits tightly to the mouth of the container (T cannot be formed).

In the method of the present invention, the tip-shaped molded product is molded by differential pressure molding.
U'li L'3-1. which is a latent property imparted to 1,.'-t by biaxial stretching method. %
ji figCut-shaped molded products (r
(Remaining j-7゜Can these l characteristics be utilized?
-) 1. Using the method of the present invention, the differential pressure molding method is applied,
ξ′rito molding method, pressure molding method, both methods: +11
It refers to the molding method where the length is 1 length.

Hereinafter, the present invention will be explained with reference to FIG.
However, the present invention is not limited to the following examples as long as it goes beyond the scope of the present invention.

Figure 7 is a longitudinal cross-sectional side view of the main part of an example of a state in which a pot-shaped molded product is molded from a styrene resin sorted using a female 1111. FIG. 1tJcflll1
Is the screw cap in the top view, No. 4/- (a)?
dK part 1-1 is covered with a pot-shaped molded product with adhesive interposed linearly on the inner wall surface. A partially cutaway side view showing the condition where the old wire is drawn out by heating the first peripheral edge and shrinking it, the old wire is attached to the second part of the container.
jf) It is a partially cutaway side view showing a state in which =1'J is cut in a kelp-shaped molded product in which l-j resin films are interposed on the entire inner wall of the pot-shaped product.

The figure (/here, / is biaxially stretched styrene-based resin 1 resin, -8,) is the -L side, -''' M-shaped female type, and the 7-piece vent pipe, Otsu is the plug type, ni, no, 2, 3.2, 41.
2 is a pot-shaped molded product, No. 3, 33. G3 is the opening of the JL tap-shaped molded product [1 periphery, llo, 3θ
(-, 1 so I'l- tore d Niji:) state capital, Hirogu is adhesive, 1+ is Atsushi town.)--1j resin fu (/1),, ti
, s, and ss are the packaging, respectively. , biaxially stretched styrene series (☆1 fat')-1・L), fl'j: , using a long length (no/-1・L), this was heated in the heating section. , the molded part, and the punched part from the molded product 11, respectively, iI: i row (/ζ 1, s) or ゛no 1'
/It is better to use type molding. Force Il in the hot part, /-
Heating can be done by any method such as contact heating method, radiation heating method, hot air heating method, etc.
! 'I use it. Size of female mold, depth snow 1:j,
J=f 7. pE-J-ru Screw Can Buoy" Container [-1 part person's size) (can be selected accordingly) for Jz production 1 [Vat and screw cap included" tableware. It is best to set it to 7+ or 71 so that there is a slight gap between the 11th part and the outer wall surface. When the pot-shaped molded product is so-called deep drawing/'), it is best to use a plug type together.5. - When performing differential pressure molding, if the compressed air formation 1fg 7i 20' is required, Jj-1, which applies heated compressed air at 7 tor, may be used. In the molding section, the kelp-shaped molded product is made into a molded product.The entire sheet is sent to the punching section in relation to the intermittent transfer pitch, and the kombu-shaped molded product is punched out.

When using the method of the present invention, the seven-spot shaped molded product formed as described above is placed over the mouth of a container with a screw cap, as shown in the partially cutaway side view of Figure (A). At this time, a thermoplastic resin film spanning adhesive is interposed between the mouth of the container with a screw cap and the pot-shaped molded product. The thermoplastic resin film and adhesive interposed between the two are used to eliminate the gap between the screw gap at the container mouth and the outer packaging, or to bond them together, so that when the container is opened, the sealing outer packaging and the screw It functions to simultaneously rotate the gap and enable opening.

Examples of the heat-riT plastic resin firn that can be interposed include polyethylene, polypropylene, olefin resins such as ethylene-vinyl H1 acid copolymer, polyvinyl chloride, polyvinylidene chloride, etc., with a thickness of 30 microns or less.
Examples include polyurethane, resin, phthalate, polyethylene phthalate, polyurethane, polyamides, and polyamides. Tangent yf that can be interposed
1-agent and (7) rubber-based adhesives such as ethylene-acid-resistant vinyl copolymer, polyamide thread, hot-melt polychloroprene system such as polyester system, nitrile rubber system * +3 13 1 (system), etc. .

The method of interposition is as follows:
It is best to place the filter in the form of planar or linear outer dots on a part of the inner wall surface.If a thermoplastic resin filter is used, it should be biaxially stretched before being formed into a spout-shaped molded product. It is preferable to laminate it on a styrene resin notebook, but after forming it into a pot-shaped molded product, it is pasted on the entire inner wall surface.
Alternatively, the LJ portion of the container with a screw cap may be covered with a heat-treated plastic resin film, and a pot-shaped molded product may be placed over this. When using adhesive,
It is preferable to apply adhesive to the screw camp in a planar, linear, or dotted manner, and then cover it with a kelp-shaped molded product (
However, the adhesive may be applied in a planar, linear or dotted manner to the inner wall surface of the pot-shaped molded product, and the container 1-1 may be covered with the adhesive. The intervening thermoplastic resin film and adhesive are preferably transparent.

The pot-shaped molded product placed over the mouth of the screw camp container is then heated and shrunk around the opening, resulting in a partially cutaway side view shown in Figure ≠ (mouth) and Figure 5. As shown, a container with a conventional screw cap and an outer packaging can be obtained. Figure 5 (
"") is 1g. Figure 5 shows an example in which the 'l'f agent is interposed in a linear manner. , respectively.F heating the opening periphery of the pot-shaped molded product
A heating method such as hot air or a radiant heater may be used.

A container with a screw-gap sealed as shown in Fig. 1 can be easily opened by turning the cap along the screw on the container [ ] in the same way as opening a container with a regular screw cap. Can be plugged. Furthermore, all the outer packaging can be easily removed from the container mouth.

The method of the present invention is as described above, and has particularly remarkable effects as follows, and its industrial utility value is extremely high.

(11) The kelp-shaped molded product used for the outer packaging in the method of the present invention has a simple structure and is therefore easy to mold.

(2) When using the method of the present invention, it is sufficient to break a kelp-shaped molded product into the mouth of a container with a screw gap and heat the opening periphery of this molded product to shrink it. It's in the barrel for the first time.

(3) When using the method of the present invention, since the thermoplastic resin film, glue, and agent are interposed inside the outer packaging for sealing, when opening the container, the outer packaging is removed once and the screw camp is removed. It can also be turned, making it easy to open.

(4) When the method of the present invention is used, the heat shrinkage rate is within the local range. Since a biaxially stretched sheet molded product with a fixed length of 1 m is used, even if the outer packaging for sealing collides with each other, it will not be easily damaged. i- Because the molecular orientation of the periphery of the pot-shaped molded product is relaxed compared to other parts due to heating, the strength is slightly lower than that of other parts, and it is difficult to break the product from this part when opening the bottle. , all can be easily removed from the container mouth.

(5) Unexploded IJ] The pot-shaped molded product made of biaxially stretched styrene resin sheet is transparent,
If a transparent thermoplastic resin film is used as the adhesive on the inside of the outer sealing package, it will be easy to identify what is printed on the top of the screw cap, and the appearance will be excellent. becomes.

[Brief explanation of the drawing]

Figure 1 is a longitudinal cross-sectional side view of the main part of an example of a state in which a pot-shaped molded product is being molded, and Figure 2 is a vertical side view of an example of a kelp-shaped molded product molded using a female mold. Figure 3 is a vertical side view of an example of a pot-shaped molded product molded using a male mold, and Figure 3 (A) shows a state in which the kelp-shaped molded product is placed over the mouth of the container. Partially cutaway side view showing ≠ Figure (Lj
) and Figure 5 (Sealing the 1'' part of the d1 container with the outer packaging (~
FIG. In the figure, / is biaxially stretched styrene resin sort, 2 is the upper heater, 3 is the lower t''--ter, g is the female mold, jl 7 is the IL ventilation pipe, and O is the plug. Type 1
．． 1', 2.2.32.4t, 2 i, i sotl, respectively, a pot-shaped molded product, 23', 33. ≠3 is the opening periphery of the cup-shaped molded product, 0 is the neck of the container, 1 is the neck of the container, and 1. t≠ is a contact agent, j is a thermoplastic resin film,
11. f, 3-. 3 is the IL 11 outer packaging. Applicant Mitsubishi Monsanto Chemicals Co., Ltd. Agent
Patent attorney for good or bad - (/'t or 7 people) Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] (1) When sealing a restrainer with a screw cap, a female mold is made from a biaxially stretched styrene resin sheet with a heat shrinkage rate in the range of 20 - θ. The pot-shaped molded product formed by the differential pressure molding method using 4. A method for sealing a container with a screw cap, characterized by heating and shrinking the open periphery of a pot-shaped molded product, and bringing it into close contact with the open part of the container with the screw key V-shaped knob.4.