CN1599685A

CN1599685A - Chemical container for high-pure chemicals

Info

Publication number: CN1599685A
Application number: CNA028239547A
Authority: CN
Inventors: H·－U·哈恩
Original assignee: Honeywell Specialty Chemicals Seelze GmbH
Current assignee: Honeywell Specialty Chemicals Seelze GmbH
Priority date: 2001-11-30
Filing date: 2002-11-26
Publication date: 2005-03-23
Anticipated expiration: 2022-11-26
Also published as: DE60213467D1; US20060037931A1; JP2005510419A; ATE334061T1; CN1289356C; AU2002352151A1; KR20040055821A; WO2003045790A1; EP1458616B1; DE60213467T2; EP1458616A1; DE10158811A1

Abstract

Chemical container made of plastics, comprising a body having side walls being arranged perpendicularly with respect to each other and a base , whereby at least one mold separation seam or accumulation of material due to production, respectively, is arranged in the edge being formed between two side walls and at least one mold separation seam or a combination of material due to production, respectively, is arranged diagonally over the base.

Description

Store the chemical vessel of high purity chemical

The present invention relates to a kind of chemical vessel of storing high purity liquid chemical goods.Usually, this chemical vessel is to make a kind of bottle that has handle by high density polyethylene (HDPE) (PE-HD) is carried out corporation.This container has round vase shape profile usually or sidewall is the ampuliform profile that the limit is arranged on plane.

Wherein, a kind of bottle in back is formed by high purity PE-HD corporation, preferred Lupolen6021D or 5021D type.In fact, this bottle is combined by two parts, so its molded isolation seam extends to two openings on the flat sidewall from the bottom always.This molded isolation seam is extended to the bottom section of container.

Yet the bottle of being made by high purity PD-HD breaks because of container material in-to-in tension force easily.Increase if be contained in the vapour pressure of the chemicals in the closed container, for example increase the then easier increase of this tension force owing to temperature build-up makes vapour pressure.Particularly when the high vapour pressure of bottle interior causes sidewall and bottom to deform, flat sidewall and bottle bottom are just born the pressure that has increased simultaneously.Because the steam of chemicals always tries hard to enlarge the volume of oneself, therefore bottle can be deformed into hemispherical object under the effect of vapour pressure.Especially easier breaking stitched in the molded isolation on flat sidewall between bottle two parts, and this breaking occurs when the bottle generation overvoltage of long-term storage especially easily.

If adopt circular bottle, then can alleviate this deficiency.But,,, will lose the big quantity space between the bottle that stacks mutually if for example in order to deposit or to transport more bottle is deposited on the saddle when bottle when being circular.

In present technology, also have a kind of technology that overcomes this bottle shortcoming to be, it is to make container become firmer by increasing wall thickness.Yet the weight of this container is bigger, and its cost of production is also higher.

Thereby, the purpose of this invention is to provide a kind of can preventing, and it is in light weight owing to the tension force effect causes the chemical vessel that breaks, productive costs is low.

This purpose can realize by the described chemical vessel of claim 1.The preferred embodiment of chemical vessel of the present invention is seen dependent claims.

Thereby, the present invention relates to a kind of chemical vessel that is made of plastics, it comprises a main body and a bottom that mutual vertical arrangement sidewall is arranged, wherein, at least one molded isolation seam or manufacturing are arranged and the plastic material accumulation part of formation respectively on the edge of the chemical vessel that forms between two sidewalls.And, also have a molded isolation seam to be formed at the bottom of chemical vessel at least, be diagonally opposing corner with the bottom.

As described herein, by the necessary molded isolation seam of at least one production chemical vessel of being made up of some crimping sections is set, will greatly reduce the danger that molded isolation seam breaks on container edge.Owing on flat sidewall, do not have molded isolation seam, the material equiblibrium mass distribution on the sidewall.Even vapour pressure increases, and deforms, they also can avoid the tension force effect to greatest extent.And on structure, the edge of container is firmer than sidewall, is difficult for increasing roughly distortion because of vapour pressure.Thereby, be arranged on the danger that the molded isolation seam on the edge breaks and obtained very big reduction.

According to a preferred embodiment, chemical vessel is made by high density polyethylene (HDPE) (PD-HD), preferred Lupolen 6021D or Lupolen 5021D type.The verified long-term storage that is particularly suitable for high purity chemical of this material because contact for a long time with chemicals or the long-term storage process in have only seldom that particulate can parse from material, and enter chemicals.Preferably, chemical vessel wall thickness of the present invention is 1.5-3mm.

According to another preferred embodiment, two sidewalls of chemical vessel cross section thereon respectively have a regional area to tilt towards the rear on each sidewall plane.The regional area of these two sidewalls is that opposite sense recedes and mutually in the face of forming a zone of this chemical vessel, in good working condition, it is approximately perpendicular to the bottom of chemical vessel, and parallel with the diagonal line of bottom.

Preferably, in the front in the zone that as above forms a handle is set, it is located at approaches this regional upper and lower, perhaps just on this zone.Because side wall upper part reduces the volume of chemical vessel towards the existence of the above-mentioned sidewall regional area at rear.But the front in formed zone especially on the connection lead between two sidewalls, can be provided with a handle like this, and it can side direction not given prominence on the sidewall that it depended on, and vertical substantially with the bottom of chemical vessel.Therefore, more similar chemical vessel just can be deposited in the obstruction that is subjected to its handle together and not.

According to another preferred embodiment, the edge symmetry that forms between the handle of elongated or bar shaped and the chemical vessel sidewall, and be positioned at the regional front that forms by the sidewall regional area.

Still according to another preferred embodiment, being provided with of this handle can make it can be not outstanding on the bottom on the direction that is parallel to the cross-sectional plane that the chemical vessel bottom forms.

According to another preferred embodiment, the handle of chemical vessel is to blow to form in the process of producing the container each several part.This mode of production is economical especially, does not need other step so that paste handle.

About using more features of the present invention, advantage and feasibility to reach a conclusion from accompanying drawing, it comprises:

Fig. 1 a: chemical vessel lateral plan of the present invention,

Fig. 1 b: the further lateral plan of chemical vessel of the present invention, the relative Fig. 1 half-twist in the position of chemical vessel among the figure,

Fig. 1 c: chemical vessel birds-eye view of the present invention,

Fig. 1 d: the view that shows from the chemical vessel bottom,

Fig. 2: pass the viewgraph of cross-section of chemical vessel handle shown in Fig. 1 b along the A-A line,

Fig. 3 a, b, c and d: the another embodiment of chemical vessel of the present invention,

And Fig. 4: along the A-B of Fig. 3 b and two viewgraph of cross-section of C-D line intercepting.

Chemical vessel shown in Fig. 1 a and the 1d has a main body 1 of symmetry fully, and this main body 1 is a bottle shape, and sidewall 1a-1d and a bottom 4 of approximate vertical are formed each other by 4.On the top of container, sidewall forms an opening 8 of chemical vessel.Below opening 8, container has a threaded cylindrical part.Container is preferably by commercial closure sealing of utility model G 91 02 564.8 usefulness.

Two sidewall 1a, 1b have regional area 2a and 2b at an upper portion thereof, and this regional area tilts towards the rear on sidewall 1a, 1b plane, and reverse each other.When chemical vessel was in good working condition, these two regional area 2a, 2b were connected to each other, and formed as the complete zone 5 perpendicular to bottom 4 of sidewall 1a-1d.This can clearly find out from Fig. 1 b.Shown in Fig. 1 c, zone 5 is slightly crooked, but it is roughly parallel to the diagonal line of container bottom 4.A molded isolation seam 7 that produces is in process of production arranged at 4 the bottom in the bottom.This molded isolation seam 7 and bottom 4 are diagonal line on 4 the tops between two edges bottom passing, and continue up to the vessel port 8 on the opposite edges that form between two sidewalls.

Owing on the plane of the sidewall 1a-1d of chemical vessel, there is not molded isolation seam, thus the material rectangular distribution on the sidewall 1a-1d, more anti-splitting, especially all the more so under long overvoltage and chemical vessel and situation that aggressive chemicals contacts.Molded isolation seam is on the edge between the sidewall.Because sidewall 1a-1d be connected in a angle on the edge below, so chemical vessel is firmer than sidewall 1a-1d on those edges, its reason is that the structure at these edges can prevent distortion.And that the inner vapour pressure that raises of chemical vessel is stitched 3 applied pressures to molded isolation is more much smaller than oppose side wall 1a-1d applied pressure.

The setting of molded isolation seam 3 on 4 diagonal angles, chemical vessel bottom also has an advantage, and molded exactly isolation seam 7 is difficult for because of tension force breaks, because the edge strengthening that bottom 4 is had diagonal line to pass.Thereby steam pressure stitches 7 applied forces to the molded isolation on the diagonal line and will compare and be parallel to the molded isolation of bottom on 4 edges to stitch 7 applied forces little.The 4 molded isolation seams 7 that form can obtain by the corporation to pipe at the chemical vessel production period in the bottom.

In addition, chemical vessel also has the handle 6 of a blowing.This handle 6 is positioned at the front in the zone 5 that is formed by sidewall 1a, 1b regional area 2a, 2b, and its top is connected on the container, and the bottom is connected on the zone 5.And handle 6 is made up of 2 parts, and these two parts are molded isolates seam 3 separately.Shown in Fig. 1 b, handle 6 is preferably roughly towards on the edge direction that forms between the sidewall 1a-1d.Preferably, this handle 5 has certain space and distance apart from the zone, and its set-up mode makes chemical vessel be suitable for wearing gloves to carry.This is essential, because in the application of a large amount of similar semiconductor production, picking and placeing and soaring of chemical vessel all worn gloves and finished.In order to simplify production process, two parts of handle 6 and bottle preferably form in identical corporation process respectively.But, the production of the container of described type can not wanted handle 6 yet.In this case, regional area 2a, the 2b after being tilted to also can save.The chemical vessel that obtains like this has a bigger volume.Handle also can be fixed on the chemical vessel like this, for example its top is fixed on the both sides adjacent with vessel port 8.

Fig. 2 has shown along the cross-sectional plane of the A-A line of handle 6.Handle 6 has a T type profile, and therefore, its stability enlarges markedly, and has reduced its danger from the staff slippage.

Fig. 3 a-3d and 4a, 4b show another embodiment of chemical vessel of the present invention.This embodiment and first embodiment have any different at the textural of handle 6.The part identical with Fig. 1 a-1d and 2 represented with identical Reference numeral.In the present embodiment, handle 6 has one in roughly cylindrical main body, and the top and the bottom of this main body are fixed on the chemical vessel by fine-structure mesh.

Fig. 4 a and 4b show the cross-sectional plane of the net on top and the bottom respectively.The profile of top net is the T type, and lower wire then roughly is a serrate flat pattern.

Described chemical vessel is suitable for holding high purity chemical, as hydrofluoric acid (HF), hydrochloric acid, thiosulfonic acid, hydrogen peroxide, ammonium fluoride solution, HF and ammoniacal liquor etch compound, ammoniacal liquor, acetic acid, dipropyl alcohol, phosphoric acid and nitric acid.

The most handy same material of all parts that comprises the chemical vessel of screw thread and handle 6, high purity PE-HD preferably, corporation forms, preferred Lupolen 6021D or 5021D type.

Reference numeral:

(1) main body

(1a-1d) sidewall

(2) a, b regional area

(3) molded isolation seam

(4) bottom

(5) zone

(6) handle

(7) the molded isolation seam in bottom

(8) vessel port

Claims

1, the chemical vessel made of a kind of plastics, it comprises:

Have orthogonal sidewall (1a, 1b, 1c, 1d) and the main body (1) of bottom (4), wherein,

By two sidewalls (1a, 1b) edge of Xing Chenging has at least one molded isolation seam (3) respectively or by making the accumulation part that forms; With

(7) are stitched at least one molded isolation or (4) are the diagonal line layout in the bottom by making the material interface that forms.

2, chemical vessel according to claim 1 is characterized in that, this chemical vessel is made by high density polyethylene (HDPE) (PD-HD), is preferably by Lupolen6021D or Lupolen5021D type and makes.

3, according to the described chemical vessel of aforementioned each claim, it is characterized in that (1a 1b) so forms in the two side of this chemical vessel in its top section separately, promptly, make this sidewall (1a, (2a 2b) is oriented and leaves sidewall (1a after being tilted to regional area 1b), plane separately 1b), and (2a 2b) forms a zone (5) to regional area together, and this zone (5) are vertical with bottom (4) and parallel with a diagonal line of bottom (4).

4, chemical vessel according to claim 3, it is characterized in that, handle (6) is connected on the chemical vessel at the top and the place, bottom in zone (5), this handle and chemical vessel are with respect at two side (1a, the edge that forms respectively 1b) and symmetry, and be located at by the sidewall regional area that is in tilted layout (2a, 2b) front of the zone of Xing Chenging (5).

5, according to an aforementioned described chemical vessel of claim, it is characterized in that, wherein handle (6) be arranged to can not make its on the direction that is parallel to the transverse cross-sectional area that forms by bottom (4), protrude in the bottom (4).

6, according to the described chemical vessel of aforementioned each claim, it is characterized in that, chemical vessel comprise one with the integrally formed handle of chemical vessel (6).

7, a kind of application that is used to store and transport chemicals according to the described chemical vessel of aforementioned each claim.

8, according to the described application of claim 7, it is characterized in that chemicals is selected from following: hydrofluoric acid (HF), hydrochloric acid, thiosulfonic acid, hydrogen peroxide, ammonium fluoride solution, HF and ammoniacal liquor etch compound, ammoniacal liquor, acetic acid, dipropyl alcohol, phosphoric acid and nitric acid.