JPS581667A - Thermal sealing type covering cover sealed paper 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 The present invention is a method for binding paper with a main strength material. This article relates to the improvement of a container body and a cover vase, which have a good shape. The contents are stored in the main body, and the lid is covered! The juku seal is used to seal the container, and the sealed cover is designed to prevent harmful birds from coming off, and the trout can be used as a cover to escape from the main body of the container, so that a sufficient amount of insects can be covered. That's what I did.

Conventionally, it has been extremely common practice to form a container using a laminated material made of a suitable combination of plastic, paper, metal foil, etc., and to heat-seal the lid after filling the container with food or other contents. , mainly paper-l! Materials and Kusho request paper contents -
In the pigeon coop, especially the pigeon coop, in the container using the cover bush, the pigeon ssgowg: Hiroshi, the pigeon mouth, and the iris under the roof.
It is relatively difficult to seal the seal with a seal, and the strength of the seal is often as high as J4-T* due to the loss of intestinal stability in Seal II trout! As mentioned above, there is one point that the lid is easily deformed and broken, and therefore loses its function as a lid after 'JiJ'. 1kt-
In the case of the paper containers used, thermosoling of the lids was not performed.

In view of this point, the present invention has developed a paper using covered buds that has both heat-sealing properties and easy-to-open lid properties.

As a result of repeated studies and tests on the material used for the container, we succeeded in developing a paper container that fully satisfies the conflicting demands of heat-cooling strength and easy-opening properties.

In other words, the sealability of the lid depends on the heat sealability of the heat-adhesive plastic layer, and the peelability of the heat-sealed part when opening the lid depends on
The heat-cooled thermoadhesive plastic layer is applied by interposing an adhesion inhibitor band layer to the layer so that tearing of the layer due to delamination from the substrate surface can occur, thereby sufficiently retaining both properties. This is the paper container obtained.

The present invention will be further explained below using examples.

1 to 5 show a first embodiment, in which a container body 10
has a bottom 19, and the upper edge of the peripheral wall 11 is provided with a protruding collar 8 which is rolled up outwardly and press-formed in the outer circumferential direction.

20 is a cover jar, 6 is, and the cover plate 21 is M! The first grade has a short plow-shaped lid flange 26, and a protruding flange 8 on the upper edge of the container body 10.
The outer periphery of the cover can be slightly elastically fitted.

After accommodating the liquid and solid contents M in the container body 10, the lid plate 2 is placed with the cover 1120 covered.
1, the lower surface of the strip 21 and the upper surface of the protruding flange 8 of the container body 10 are brought into pressure contact.
Heat sealing is performed as described below.

Container body 10 circumference @ 11 is Is2.5.6 Figure 1Cyr
c, f On the inward side of the slightly thick paper layer 2, a heat-adhesive plastic layer 5 such as polyethylene or polyvinyl chloride.
4 is made of a coated or covered laminated sheet 1, and the seaming part 18 on the upper edge thereof has a tsuba 8 that comes out from the center after seaming.
When extrusion molding is carried out, the 5th. ,．．
An adhesion inhibitor band 7 1151 as shown in FIG. 6 is interposed. Adhesion inhibitors include Boria ζ doe polyurethane and nitrified cotton.

Select silicon etc. as appropriate. Note that this is the adhesive cost for forming the 17th office wall. Also cover the bottom surface of the thick paper layer 22 with a heat-adhesive plastic layer 25. It has a lid plate 21 with a suitable plastic layer 24 laminated on its upper surface, the outer periphery of the lid plate 21 is press-molded downward to form a bent circumference@25, and the outer surface has an upper edge #cII! ! A short paper cylinder 28 with a tying edge 27 projecting inward is fitted into the inner wall 29 with its lower edge folded back onto the inner surface of the bent peripheral edge 25.
Thus, the lid face plate 21 is held by the lid flange 26 reinforced by the short paper tube 28 that surrounds the bent edge 25 of the lid face plate 21, and is in the fitted state shown in @2. , the outer peripheral surface of the protruding collar 8 and the lid collar 2 of the cover 1120
There is no elastic tension with the inner wall 29 of the heating mold 50, and the lower surface of the lid plate 21 and the upper surface of the protruding flange 8 are in contact with each other, as shown in FIG. The heat adhesive plastic layer 23.5 on both sides is suppressed and heated on the 51 side.
A fusion seal is performed.

The cover lid 20 that has been hermetically sealed in this manner has its lid flange 2
6 from the container body 10. At this time, the fused portion between the lid face plate 21 and the protruding flange 8rM is interposed between the bottom of the heat-adhesive plastic layer 3 of the protruding flange 8. Due to the adhesion inhibitor band @7, it peels off from the two sides of the base paper layer, causing the thin plastic layer s itself to elongate and break, and the covered rice 20 can be easily separated and opened.

Therefore, the lid 20 can be folded onto the container body 10 again without leaving any deformation or strain.

Although not shown, there is a shrine on the protruding tsuba 8, and a cover plate 2.
It is also possible to provide a narrow convex strip in order to make the adhesive area smaller and easier to open.

In FIG. 4, an inner winding tightening projection collar 8' is formed in place of the outer winding joint wire projection collar 8 provided on the container body 10 in the previous embodiment, and a narrow annular protruding strip 9 is formed on the upper surface of the collar. This is an example in which a weak heat stamping seal is possible, and furthermore, it is easier to break and separate the seal of the cover lid.Furthermore, FIG. 8"
is formed by folding back and the annular protruding strip 9 is press-molded, and it is shown that the edge binding material band layer 7 is interposed in the lower layer of the heat-adhesive plastic Ff13 of the annular protruding strip 9. It is possible to put it into practical use depending on the strength of the laminated sheet, the usage conditions, and the design of the container.

Therefore, the tightening of the protruding edge according to the present invention includes the case of using a bent helical edge.

Of course, in the present invention, a flat protruding flange may be used without forming the annular protruding strip 9.

Furthermore, for the Ii face plate 21 of the cover plate 20, it is also possible to use an aluminum foil material as appropriate.

In the above description, a case has been shown in which a thermal mold is used as a means for thermally bonding the container body 10 and the covering plexus 20, but it goes without saying that other known thermal cooling means such as ultrasonic heating, bird frequency heating, etc. can also be applied. be.

As explained above, the present invention uses paper as the main strength material,
In order to obtain a heat-sealed sealed container by using a laminated sheet of heat-adhesive plastic and a container body and a cover lid, a reinforcing protruding flange is provided at the upper edge of the opening of the container body, and the steeply cooled part of the container body is provided with a protruding flange. By interposing an adhesion inhibitor on the lower surface of the plastic layer, it is possible to maintain a good balance between sufficient sealing performance and easy opening.
An extremely favorable sealed container for ice cream and other foods can be obtained.

[Brief explanation of the drawing]

Figure 1 shows an embodiment of the present invention, where Figure 1 is a partially cutaway side view, Figure 2 is an enlarged side view with a partially cutaway main part of te1j, and Figure 3 is a side view with a partially cutaway cross section. FIG. 4 is a perspective view of a container body of another embodiment; FIG. 5 is a plan view of a cylindrical wall blank plate of the container body; FIG. FIG. 7 is an enlarged cross-sectional view of the lid, and FIG.
FIG. 8 is a cross-sectional view of the main part of the main body of the container 6 in still another embodiment. 1... Laminated sheet 2... Paper layer 3, 4. ...Plastic layer 5...Edge 7...Adhesion inhibitor band layer
8... Protruding collar 10... Container body 11... Peripheral wall 20... Covering lid 21... 1111ri/1i25
...Folded peripheral edge 26...Budging edge 27...Tightening edge 28...Short paper s 29...Folding edge 3o...Press member 51...Protruding end

Claims (1)

[Scope of Claims] 1) Laminated V- layer with 11 layers + 2) as main strength materials and 9 on both sides with thermoadhesive plastic layers (5)
Container body (10) and cover lid (2) formed by H1)
In a sealed container consisting of 0), a protruding flange (8) is provided on the upper hoe of the sai-sai main body (10), the peripheral wall of which is tightened with I red, and the protruding flange (8) is pressed out on the outer periphery. (8) The adhesion inhibitor band layer (7) runs all around the glabella between the thermoadhesive plastic layer (3) on the upper surface and the lower layer.
), the container body (10) contains the contents.
A heat seal hfli cover mm characterized in that the lower surface of the cover lid (20) is thermally bonded to the protruding collar (8) surface of the
Tribute-0 2) A thin vote-shaped protrusion (
9) A heat-sealable cover lid 1f sealed container according to claim 1 of the present invention.