CN1337351A

CN1337351A - Metal can and its manufacture

Info

Publication number: CN1337351A
Application number: CN 00113597
Authority: CN
Inventors: 周勋
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-03
Filing date: 2000-08-03
Publication date: 2002-02-27

Abstract

The present invention discloses a sight metal tank and its production method. Said metal tank incldues tank body, tank bottom and tank cover, in which its tank bottom is made up by using transparent materials of glass, etc. and the glass tank bottom and tank wall combined position structure is characterized by that the periphery of the tank well of lower end portion of tank body is equipped with inward-recessed positioning internal rib, internal edge of tank body is tightly adjoined to the positioning internal rib, the sealing ring is adjoined to external edge of tank bottom, and the inward-flanged edge of bottom end of the tank body is retained tightly on the bottom portion of sealing ring. Its production method includes the following steps: making tank body, rolling positioning internal rib, placing glass tank bottom placing sealing ring and inward flanging edge of bottom wall of tank body. The internal-held material in the tank can be clearly seen, and said tank can be high-temp. sterilized, and can resist corrosion, and its cost is low.

Description

Metal can and manufacture method thereof

The present invention relates to a kind of metal can that is used for splendid attire drinks, beverage, mixed congee, seed etc., especially a kind of metal can.The invention still further relates to the manufacture method of this metal can.

At present, the maximum defective of metal can (can, aluminium pot etc.) popular on the market is to see the thing of adorning of the inside clearly, and it is very worried that the customer internally adorns amount.Though once designed a kind of metal can that visual bottom is installed before me, its structure is for to add the layer of transparent flexible plastic in original metal can bottom, and establishes inspection door on metal bottom cover.But the transparent flexible plastic non-refractory of this jar can't carry out high temperature sterilization; Simultaneously, because the virgin metal bottom can only be taked the stamping forming again technology of first anticorrosion with coat, its coating structure is easily loose during punching press, so as dress drinks, strong acid class (tomato juice etc.) food often because of not withstanding corrosion corrosion, thereby influence the outward appearance of quality of food and commodity; Simultaneously owing to increase flexible plastic, still keep at the bottom of the virgin metal and also need punch, so manufacturing process is complicated, cost is also higher.Also has the not anti-static of this flexible plastic (when dust being arranged, then still not seeing the inside thing of adorning) as the dress seed.

The object of the present invention is to provide and a kind ofly can see jar interior thing of adorning clearly, and can high temperature sterilization, and deep-etchings such as anti-liquor, strong acid class, and the low metal can of cost.

Another object of the present invention is to provide the manufacture method of above metal can, this manufacturing approach craft is comparatively simple.

The object of the present invention is achieved like this, this metal can, comprise tank body, the jar end and cover, be characterized in, adopt the thermostable transparent material at the bottom of its jar, at the bottom of the transparent jar with the structure of tank skin joint portion be: tank body bottom tank skin circumference is provided with muscle in the location of indent, tank body least significant end is crimping (spacing foundation ring) in the location that inwardly is rolled into of tank skin, at the bottom of the transparent jar in the location muscle and locate between the crimping, seal ring be positioned at the bottom of the transparent jar (on) limit or outer (descend) limit, in the location in muscle and the location crimping with transparent jar at the bottom of and seal ring push against to seal; When transparent material was made cover, it was identical with above structure when doing jar end with structure of tank skin joint portion, only reversed in order up and down.

Described thermostable transparent material refers to glass or hard plastic; Described seal ring refers to rubber seal or injecting glue seal ring.

The method of described this metal can of manufacturing comprises the making tank body; On tank body diapire or roof circumference, roll muscle in the location; Place at the bottom of the transparent jar or cover; Put seal ring or injecting glue; Tank body diapire or roof are rolled into crimping in the location.

Metal can of the present invention is owing to adopt resistant to elevated temperatures transparent material such as glass or hard plastic to make, the jar end or cover (the general jar end of doing) can be seen jar interior thing of adorning clearly, easily so that the customer is relieved, can carry out high temperature sterilization again, to guarantee the amount of being adorned.Simultaneously since at the bottom of this glass or the hard plastic jar corrosion stability strong, can high liquor, the strong acid based food (tomato juice etc.) of the various corrosion strengths of splendid attire, Applicable scope is more extensive, commodity inherent quality and outward appearance are more reliable.Add,, simplified manufacturing process owing to, therefore reduced cost with substituting at the bottom of glass or the hard plastic at the bottom of the virgin metal and the two-layer bottom of flexible plastic.Adopt at the bottom of the glass in addition or the metal can splendid attire seed of lid, can alleviate electrostatic influence, both having made has dust in the seed, also easily see the thing of adorning clearly.

Below in conjunction with drawings and Examples the present invention is described in further detail.

Fig. 1 is this metal can structural representation.

Fig. 2 is the local enlarged diagram of Fig. 1.

Fig. 3 is for making a kind of processing step diagram of circuit of this jar.

Fig. 4 is for making the another kind of processing step diagram of circuit of this jar.

As shown in Figure 1 and Figure 2, metal can comprises tank body 1, jar end 4, cover (not shown).Tank body 1 general employing tin-plate (built-up tin) or aluminium (seamless tin) are material.Cover is generally the easy-open lid that adopts aluminum to make.Glass casting moulding or hot-forming is adopted at the jar ends 4, also can adopt other resistant to elevated temperatures transparent materials making such as hard plastic (following is that easy of narration is proposed at the bottom of the glass jar).4 shape of cross section is a bone-shaped at the bottom of this glass jar, the structure of itself and tank skin 2 joint portions is, tank body 1 bottom tank skin 2 circumference are provided with muscle 3 (nests in the location of indent, muscle in the metal can of prior art is only established and strengthened, and establish the interior muscle that plays the role of positioning is one of important inventive point of the present invention), near muscle 3 in the location, 4 external diameters are slightly less than tank body 1 bottom internal diameter to 4 inner edges at the bottom of the glass jar (i.e. the circumferential edge on plane at jar end 4) at the bottom of its glass jar.Seal ring 5 is near 4 outside at the bottom of the glass jar, and between the herringbone grooves of 4 outsides and the inwall 2 in the gap, seal ring 5 can adopt the seal ring of prefabricated rubber seal or on-the-spot injecting glue at the bottom of being embedded in jar.Crimping 6 in the location that the tank skin 2 of tank body 1 bottom inwardly is rolled into (spacing foundation ring) pushes against the bottom (the jar diapire of prior art or roof only have outside crimping, and it is another important inventive point of the present invention that this jar inwardly is rolled into the interior crimping that plays the role of positioning) of seal ring 5.The location in muscle 3 and the location in crimping 6 with at the bottom of the transparent jar 4 and seal ring 5 push against sealing.Muscle 3 is generally the indent semicircle in the location.Also can be indent half rectangle, form step, in order to place seal ring 5 with muscle 3 bottoms in the location.Seal ring 5 also can be pressed at the bottom of the glass jar in 4 inner edges and location between the muscle 3 except that 4 outsides at the bottom of the above is placed on glass jar.The above makes the situation (at this moment, cover is generally the aluminum easy-open lid) at jar end 4 for glass.As make cover (not adopting as aluminum container under the situation of easy-open lid) with glass, identical at the bottom of the structure of its cover and tank skin 2 joint portions and the glass jar, reversed in order up and down only.In other words, be about at the bottom of the above glass jar 4 metal can fall turnback the metal can of glass cover.

Make the method for visual jar of this metal, can adopt two kinds of different processing steps.Embodiment (one) (referring to Fig. 3):

1, makes tank body.The tank body of different materials, shape is taked different method for makings, needs the welding of spraying back as can (built-up tin), is generally dielectric bonding, if irregular shaped can shown in Figure 1 also needs drawing and forming.More than for system jar industry common technology, so do not describe in detail.

2, roll muscle in the location.The tank body of making moulding is placed on the special-purpose roller, will rolls out muscle 3 in the location that concaves (location inner ring) on its tank body 1 bottom circle wall 2.

3, place at the bottom of the glass jar 4.4 inner edges at the bottom of the glass jar are close to muscle 3 in the location.

4, injecting glue or placement seal ring (, treating that glue is from doing or drying and carry out next procedure again) as injecting glue.

5, the tank skin 2 with tank body 1 bottom inwardly is rolled into crimping in the location.The general cover mouthful method (a system jar industry current techique) that adopts inwardly is rolled into interior crimping (inwardly crimping rather than outwards crimping, this is one of technical essential of the present invention) to push against at the bottom of the glass jar and the pressing seal ring with the tank skin 2 of tank body 1 bottom.

Above describedly be glass as the manufacture craft at jar end, as cover, its structure and processing step thereof are identical, the turnback of just jar being fallen is made cover and is used and get final product.As (adopting the seamless tin that directly stretches and form as the aluminium pot cover, at the bottom of the existing aluminum container) when using, step is the same, and its difference only is, earlier jar domestic demand dress thing is installed, carry out again with upper cover step (content product and capping belong to the production process of can, beverage and food production producer).

The manufacture method of embodiment (two) (being the concrete grammar of each step) so repeat no more, is sequence of process steps difference (referring to Fig. 4) with embodiment one:

1, makes tank body 1.

2, with the inside crimping of tank body diapire 2 (or roof), to form spacing foundation ring 6.

3, place rubber seal 5.(the unsuitable injecting glue of present embodiment)

4,4 (or covers) at the bottom of the placement glass jar.Need 4 to put and to push against seal ring 5 well at the bottom of with glass jar from tank deck.

5, roll muscle 3 in the location.With 4 (or covers) and pressing seal ring 5 at the bottom of compressing jar.

More than in two examples, also can adopt and mould at the bottom of carbonic acid polyester hard plastic and other thermostable transparent material jars or cover.Also can adopt crimping in the spinning method.Muscle 3 generally is rolled into the indent semicircle in the location.

Place at the bottom of the glass jar in 4 inner edges and location between the muscle 3 as seal ring 5, then place seal ring 5 just in time opposite with the order of placing transparent jar bottom 4 (in such cases, locate interior muscle 3 and be rolled into indent half rectangle).

Claims

1, a kind of metal can, comprise tank body (1), the jar end (4) and cover, it is characterized in that, (4) adopt the thermostable transparent material at the bottom of its jar, the structure of (1) and tank skin (2) joint portion is at the bottom of the transparent jar: tank body (1) bottom tank skin (2) circumference is provided with muscle (3) in the location of indent, tank body (1) least significant end is crimping (6) in the location that inwardly is rolled into of tank skin (2), (4) are positioned between location muscle (3) and the location crimping (6) at the bottom of the transparent jar, seal ring (5) is positioned at the inner edge or the outside of (4) at the bottom of the transparent jar, in the location in muscle (3) and the location crimping (6) (4) and seal ring (5) at the bottom of the transparent jar are pushed against with sealing; When transparent material was made cover, it was identical with above structure when doing jar end with structure of tank skin joint portion, only reversed in order up and down.

According to the described metal can of claim 1, it is characterized in that 2, described thermostable transparent material refers to glass or hard plastic; Described seal ring (5) refers to rubber seal or injecting glue seal ring.

3, a kind of method of making the described metal can of claim 1 comprises the tank body making, it is characterized in that, described manufacture method also is included in and rolls muscle (3) in the location on tank body (1) diapire or the roof circumference; (4) or cover at the bottom of the placement transparent jar; Place seal ring (5) or injecting glue (5); The tank skin (2) on tank body (1) bottom or top is rolled into crimping (6) in the location.

4, manufacture method according to claim 3 is characterized in that, its manufacturing technology steps is followed successively by: make tank body (1); Roll muscle (3) in the location; (4) or transparent cover at the bottom of the placement transparent jar; Place seal ring (5) or injecting glue (5); With tank body (1) bottom or top tank skin (2) inwardly be rolled in the location crimping (6) with pressing seal ring (5) and standing tank at the bottom of (4) or cover.

5, manufacture method according to claim 3 is characterized in that, its processing step is followed successively by: make tank body (1); Tank body (1) bottom or top tank skin (2) inwardly are rolled into crimping (6) in the location; Place seal ring (5); (4) or cover at the bottom of the placement transparent jar; Roll in the location muscle (3) with (4) or cover and pressing seal ring (5) at the bottom of compressing jar.

6, manufacture method according to claim 3 is characterized in that, described interior crimping (6) adopts a cover mouthful flange crimping crimping.