CN1050090C

CN1050090C - Method for producing air-tight bag

Info

Publication number: CN1050090C
Application number: CN96114262A
Authority: CN
Inventors: 王水木
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-12-17
Filing date: 1996-12-17
Publication date: 2000-03-08
Anticipated expiration: 2016-12-17
Also published as: CN1185376A

Abstract

The present invention relates to a method for manufacturing an air-tight bag body. A hollow tubular embryo material in a melting state squeezed by an annular mold heat at the front end of an extruding machine is directly led between a left forming mold and a right forming mold with both sides opening; the inner-side walls of the left forming mold and the right forming mold are symmetrically and concavely provided with a plurality of mold cavities of air-tight chambers; a plurality of ventilation elements are respectively and fixedly arranged between the air-tight mold cavities and the hollow chambers of the molds, and the hollow chambers of the molds are respectively communicated with an air pumping catheter of a vacuum pump; the hollow chambers of the molds are pumped to be in a vacuum state by the vacuum pump; a thin film of the hollow tubular embryo material in a melting state can be adsorbed on the wall surfaces of the mold cavities of air-tight chambers, and the air-tight bag body which is completely sealed and has a plurality of air chambers is manufactured.

Description

The manufacture method of air-tight bag

Generally by thermoplasticity (Thermoplastic) material, as polyamine base Ethyl formate, (Polyurethane) made air-tight bag be widely used in sports equipment filling protection air cushion partly.For example: the shoe-pad of motion sneakers or knee-pad cover etc., it mainly is that installing is filled with air-tight bag as the shock-absorbing air cushion, and then the protection user is in order to avoid be subjected to athletic injury.So the scope of application of this kind air-tight bag is very extensive, so have exploitation value matter on the industry; And the manufacture method of at present relevant this kind air-tight bag, be that the thermoplasticity raw material is put into casing drum, screw rod via cartridge heater and extruder pushes forward then, continue it, plastics with molten squeeze out die head again, make to form the hollow tubular stock, this stock then is directed in the open mould, behind the mould mold closing of both sides, then need in addition to insert air blowing in this mould by a blow pressure tip (Blow Pin), only make the hollow tubular stock in this mould be subjected to the influence of injecting gas, and produce swelling and be adjacent to the die cavity internal face of mould, thereby form and the identical shaped structure of die cavity; Afterwards,, make and to remove this blow pressure tip, and open this mould and have the utricule semi-finished product structure (shown in first figure) of blow vent to make one again via the short time cooling program.But, then need use manually aeration in the semi-finished product utricule again, and again with the blow vent (T) of this semi-finished product utricule of high frequency facility fusion sealing if will make complete air-tight bag (air cushion) structure time.At last, the burr of periphery are sealed in the finishing fusion, promptly finish the manufacturing process of a hollow air-tight bag (air cushion).In sum, known manufacture method must be by the mould of aerating of a blow pressure tip, just can make one and have the semi-finished product utricule structure of blow vent (T), need simultaneously in addition consuming time take a lot of work the ground aeration and by the high frequency facility with fusion sealing its blow vent (T), so no matter at plant, manufacturing process or make on the usefulness all difficulty and be called and be suitable for value on the industry, and need a large amount of manpowers semi-finished product that carry out consuming time to add operation once more with taking a lot of work, obviously do not conform in the trend of industry automation.

In view of this, this collection of this case inventor goes in for the study for many years and makes the experience of air-tight bag (air cushion), satisfy the several times repeatedly trial-production of sample and test, finish the present invention and cause initiative eventually, its main purpose is to provide a kind of manufacture method of air-tight bag, make it to be made into integration a hollow air-tight bag (air cushion), and process operation once more with need not to expend man-hour, make usefulness and product quality to improve it;

Another object of the present invention is to provide a kind of manufacture method of air-tight bag, improve the drawback that to process operation on the prior art once more and consume plant.

The object of the present invention is achieved like this: a kind of manufacture method of air-tight bag, to be squeezed out fusion hollow tubular stock by extruder front end annular die, directly import an open left side, both sides, between right mould, and should a left side, the equal symmetry of interior sidewall surface of right mould is concaved with a plurality of sealed chamber die cavitys, it is characterized in that: between the hollow chamber of these a plurality of airtight die cavitys and mould, then be installed with a plurality of ventilation components respectively, and system of the hollow chamber of this mould is connected with the conduit of bleeding of a vavuum pump respectively, this vavuum pump is the hollow chamber of the mould state that is evacuated just, make this fusion hollow tubular stock film can be adsorbed in the air chamber die cavity wall of mould, make the air-tight bag of an airtight fully and plural air chamber of tool.

Purpose of the present invention also can be realized by following measure, a plurality of air chamber die cavitys of this mould can communicate, the plural air chamber structure or this mould that its air-tight bag of making are had be connected also can be concaved with independently air chamber die cavity, make its air-tight bag of making have independently air chamber structure; Wherein this left and right mould can a side be plane also, and side then is concaved with a plurality of air chamber die cavitys in addition, makes its air-tight bag of making form the air cushion structure of tool single face relief air chamber.

Air-tight bag manufacture method of the present invention, its major technique is to utilize hollow chamber with the left and right mould status method that is evacuated, make this stock that is the fusion tubulose can be adsorbed in the air chamber die cavity internal face of mould fully, thereby be made into integration a complete airtight air-tight bag.So, the present invention need not to adopt plants such as the blow pressure tip of the prior art and high frequency fully, and need not the operation of processing once more consuming time with taking a lot of work, so manufacture method of the present invention method for making method obviously more of the prior art has more value on the industry, and can specifically improve the manufacturing usefulness and the quality of air-tight bag.

The explanation of accompanying drawing drawing:

Fig. 1 is the semi-finished product structural representation of prior art air-tight bag, and in its upper edge one blow vent (T) structure is arranged.

The hollow air-tight bag structural representation that Fig. 2 manufacture method of the present invention is made into integration.

Fig. 3 cross-sectional view that fusion hollow tubular stock is imported open left and right mould of the present invention.

Fig. 4 is the hollow chamber of the left and right mould of Fig. 3 the be evacuated state and the cross-section structure action schematic diagram of absorption fusion tubular blank thereof.

The die sinking tool is finished mold closing to Fig. 5 and the cross-sectional view of the action of bleeding for the left and right mould of Fig. 4 is finished.

Fig. 6 is hollow chamber's injecting gas of the left and right mould of Fig. 5, and cross-section structure and the action schematic diagram thereof of opening mold to finish the air-tight bag manufacturing.

Describe the present invention in detail below in conjunction with embodiment and accompanying drawing thereof;

Lucerne please cooperate Fig. 2 to shown in Figure 6 earlier, the manufacture method of air-tight bag of the present invention, to be squeezed out fusion hollow tubular stock 30 by extruder front end annular die, directly import an open left side, right mould 10, between 20, and should a left side, right mould 10, the equal symmetry of 20 interior sidewall surface is concaved with a plurality of sealed

chamber die cavitys

12,22, and these a plurality of sealed

chamber die cavitys

12,22 with the hollow chamber 11 of mould, 21, then be installed with a plurality of ventilation components 15 respectively, 25, so gas can be by the no part 15 of this ventilation, 25 end face slotted eye 151,251 to circulate in the sealed chamber die cavity 12 of mould, 22 with hollow chamber 11, between 21, this left side, the hollow chamber 11 of right mould, 21 respectively with the conduit 111 of bleeding of a vavuum pump, 211 are connected, so, when this left side,

right mould

10,20 before mold closing moment, its nationality by vavuum pump with the hollow chamber 11 of this mould, 21 states that are evacuated, make these fusion hollow tubular stock 30 films be adsorbed in the sealed chamber die cavity 12 of both sides mould, 22 walls, as shown in Figure 4.When this fusion hollow tubular stock 30 is adsorbed in a plurality of air

chamber die cavitys

12,22 walls of mould fully, then can carry out the mold closing operation (as shown in Figure 5) of mould, make a complete close utricule structure of air chamber airtight and the plural air chamber of tool again, via cooling off and injecting an amount of air in 11,21 of mold, and be beneficial to finish (as shown in Figure 6) of stripping operation, so, then can finish and be made into integration complete airtight air-tight bag 31 product persons;

Made air-tight bag 31 its materials that adopted of relevant the present invention are thermoplasticity material (as: polyamine base Ethyl formate), also can be the plastic aluminum alloy materials of a tool, see also shown in Figure 2 again, 32 of the plural air chambers of this air-tight bag 31 can be communicated with each other, also can be respectively the structure of independent air chamber 33.In addition, this air chamber utricule 31 can be a side and is plane, and it is side a plurality of air chamber 32 structures of relief then in addition, make this air-tight bag 31 form the air cushion structure of tool single face relief air chambers 32.

In sum, air-tight bag manufacture method of the present invention, its major technique is to utilize hollow chamber with the left and right mould status method that is evacuated, make this stock that is the fusion tubulose can be adsorbed in the air chamber die cavity internal face of mould fully, thereby be made into integration a complete airtight air-tight bag.So, the present invention need not to adopt plants such as the blow pressure tip of the prior art and high frequency fully, and need not the operation of processing once more consuming time with taking a lot of work, so manufacture method of the present invention method for making method obviously more of the prior art has more value on the industry, and can specifically improve the manufacturing usefulness and the quality of air-tight bag.

Claims

1, a kind of manufacture method of air-tight bag, to be squeezed out fusion hollow tubular stock by extruder front end annular die, directly import an open left side, both sides, between right mould, and should a left side, the equal symmetry of interior sidewall surface of right mould is concaved with a plurality of sealed chamber die cavitys, it is characterized in that: between the hollow chamber of these a plurality of airtight die cavitys and mould, then be installed with a plurality of ventilation components respectively, and system of the hollow chamber of this mould is connected with the conduit of bleeding of a vavuum pump respectively, this vavuum pump is the hollow chamber of the mould state that is evacuated just, make this fusion hollow tubular stock film can be adsorbed in the air chamber die cavity wall of mould, make the air-tight bag of an airtight fully and plural air chamber of tool.

2, according to the manufacture method of the described air-tight bag of claim 1, it is characterized in that a plurality of air chamber die cavitys of this mould can communicate, make its air-tight bag of making have the plural air chamber structure that is connected.

3, according to the manufacture method of the described air-tight bag of claim 1, it is characterized in that this mould also can be concaved with independently air chamber die cavity, make its air-tight bag of making have independently air chamber structure.

4, according to the manufacture method of the described air-tight bag of claim 1, it is characterized in that this left and right mould can a side be plane also, side then is concaved with a plurality of air chamber die cavitys in addition, makes its air-tight bag of making form the air cushion structure of tool single face relief air chamber.