CN1245750A

CN1245750A - Production method for P. E. T. container bottle neck for hot filling

Info

Publication number: CN1245750A
Application number: CN 99114307
Authority: CN
Inventors: 李缵缨
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-08
Filing date: 1999-07-08
Publication date: 2000-03-01
Anticipated expiration: 2019-07-08
Also published as: CN1089668C

Abstract

The present invention relates to a production method of P. E. T. container bottle neck for hot filling, and said production method includes the following steps: using mouth die to jacket the P. E. T. bottle blank or container bottle neck, holding and fixing it, then in the inteior of bottle neck using a heater whose diameter is identical to internal diameter of the bottle neck and temp. is 130 plus or minus 20 deg.C to heat the bottle neck from inside, then using a cooling device whose diameter is also identical to the internal diameter of the bottle neck to quickly cool so as to obtain the invented bottle neck which can resist high temp. and is favourable for filling thermal solution.

Description

The hot filling manufacture method of P.E.T. container bottle neck

The present invention relates to the manufacture method of a kind of hot filling with the P.E.T. container bottle neck

The existing plastic material of making the plastic cement bottle is generally P.E. (POLY ETHYLENE), P.P. (POLY PROPYLENE) and P.V.C. (POLYVINYL CHLORIDE), and its manufacture method is normally via the moulding of blowing mould cramping.Yet because plastic material can produce toxin, can not be approved, and bottle periphery outside is when making cramping by food medication management department, unnecessary part of scrapping can be produced, the unhairing limit need be manually eliminated, labor intensive and time, and easily produce dioxin during waste recovery, cause environmental issue.So in 1970, a kind ofly be developed by penetrating blow-molded new technology and the resin of prestretching, employed resin is called P.E.T. (POLY ETHYLENE THREPHTALATE) in this manufacture method, and this resin is also through the approval of U.S. F.D.A. food and drug administration, can be used on food, diet, packing aspect, and that the P.E.T. bottle has more is transparent, light weight and durable characteristic, so the plastic cement bottle is used this material more instead and manufactured.Yet general P.E.T. bottle container hear resistance is bad, can not be used for the liquid of can heat, as fluid temperature is 70 ℃, container will be out of shape, so majority only is used for the drink of use cold fillings (being can under the normal temperature) such as filling drinking water, soft drink, but fruit juice, Sugared beverages (not containing vapour) or fruit, vegetables, cream etc. then must use the hot filling mode to load, and grow in airtight container to prevent bacterium, cause and addle.So container is wanted can be heat-resisting to 90 ℃.Therefore traditional way is to use vial to carry out hot filling, or add anticorrisive agent therein, thereby use the mode of cold filling instead, perhaps in the P.E.T. container bottle neck, mould to make and be coated with a heat-resisting plastic layer, the cooling of air or in addition filling when low temperature slightly during by filling.But vial is filled with Heavy Weight, shortcoming such as frangible, and it is harmful easily to add anticorrisive agent, and bottleneck coats a heat-resisting plastic cement, is not easy to production and processing, and environmental protection when reclaiming two kinds of plastic materials be difficult for splitting, be necessary to be improved.

Purpose of the present invention is exactly in order to address the above problem; propose a kind of hot filling manufacture method with the P.E.T. container bottle neck, it makes the bottleneck of P.E.T. container can bear higher temperature and indeformable, but and faster production; the puzzlement that can avoid environmental protection to reclaim has vast market prospect.

Technical solution of the present invention:

A kind of hot filling manufacture method of P.E.T. container bottle neck, it is characterized in that it is with P.E.T. bottle embryo, P.E.T. container or when its bottle blowing is moulded the system process, with the mouth mould bottleneck of bottle embryo or container is covered by overcoat and to grip, and in bottleneck inside, identical with a diameter with the bottleneck internal diameter, temperature is at 130 ± 20 ℃ heater, heated from the interior bottleneck of facing, and then use the diameter cooler also identical rapidly instead with the bottleneck internal diameter, make it quick cooling, make blown P.E.T. container bottle neck grease bear higher temperature, so that the can hot solution.

It is not good to the present invention is directed to existing P .E.T. container hear resistance, inconvenience is used for the shortcoming of can hot liquid, with P.E.T. bottle embryo, P.E.T. container or when its bottle blowing is moulded the system process, with the mouth mould bottleneck of bottle embryo or container is covered by overcoat and to grip, and in bottleneck inside, identical with a diameter with the bottleneck internal diameter, temperature is at 130 ± 20 ℃ heater, heat from the interior bottleneck of facing, and then use the diameter cooler also identical rapidly instead with the bottleneck internal diameter, make it quick cooling, outer like this have the cover of mouthful mould to cover clamping, the restriction of interior having heaters and cooler, thus the bottleneck size of bottle embryo or container can be remained unchanged, and with the method for fast cooling cooling and shaping, make the P.E.T. plastic molecules of P.E.T. container bottle neck sexually revise comparatively stable state, thereby can bear higher temperature and indeformable, so that filling hot filling solution usefulness has vast market prospect.

The present invention is owing to only make with the single plastic cement of P.E.T., so but faster production and reducing production costs can be avoided the puzzlement of environmental protection recovery simultaneously again, have good social benefit and economic benefit.

Fig. 1 is the sectional view that the present invention inserts heater embodiment;

Fig. 2 is the sectional view that the present invention inserts cooler embodiment;

Fig. 3 is the sectional view of the present invention embodiment when the bottle embryo heats;

Fig. 4 is the sectional view of the present invention embodiment when bottle blowing is moulded system;

Among the figure, 1-P.E.T. bottle embryo or container 2-mould 3-mouth mould 4-heater 5-cooler 6-stretching bar 10-bottleneck 11-bottleneck 20-die orifice 21-die cavity.

Below in conjunction with accompanying drawing the present invention is further described:

As Fig. 1-4, the present invention is mainly with P.E.T. bottle embryo or container 1, mouth mould 3, heater 4, cooler 5 and mould 2 are manufactured, wherein P.E.T. bottle embryo or container 1 are the hollow tube column with bottleneck 10 that is made into the P.E.T. material, the bottleneck 11 that mould 2 ends then are provided with available mouthful of mould 3 pairs of P.E.T. bottles embryo or container 1 covers the die orifice 20 that clamping is located by overcoat, die orifice can be provided with die cavity 21 20 times, make shape so that the P.E.T. bottle embryo that rises moulded, in addition then the internal diameter with bottleneck 11 is identical for the diameter of heater 4 and cooler 5, and but sleeve is gone in the bottleneck 11, heater 4 also can form the through hole shape in central authorities with cooler 5 in case of necessity, so that stretching bar 6 passes, impelling when bottle blowing stretches the bottle embryo to mould makes shape.

When the present invention manufactures, earlier P.E.T. bottle embryo or container 1 are covered the position of clamping at bottleneck 11 with mouth mould 3 by overcoat, be installed with then at die orifice 20 places of mould 2 and fixed, again from the bottleneck top, identical with diameter with bottleneck 11 internal diameters, temperature is at 130 ± 20 ℃ heater 4, sleeve advances in the bottleneck 11, heat from the interior bottleneck 11 of facing, and then use the diameter cooler 5 also identical rapidly instead with bottleneck 11 internal diameters, make it quick cooling, like this, cover by mouth mould 3 cover and to be clamped in bottleneck 11 outsides and heater 4 is nested with in bottleneck 11 inside with cooler 5, with shape and size bottleneck 11, when heating and quick cooling, limited, impel the bottleneck 11 of P.E.T. bottle embryo or container 1 to remain unchanged, because the effect of fast cooling cooling and shaping makes the P.E.T. plastic molecules of bottleneck 11 sexually revise comparatively stable status, thereby can bear higher temperature and can not produce deformation, use so can be used to filling hot filling solution.Above-mentioned again manufacture method can be engaged in the P.E.T. container bottle blowing manufacture process and finish simultaneously; thereby the time of manufacturing can be saved; be illustrated in figure 3 as when the bottle embryo heats and manufacture simultaneously; Figure 4 shows that when bottle embryo bottle blowing is moulded system and manufacture simultaneously; like this can faster production; reduce production costs, increase economic efficiency, the puzzlement that can avoid environmental protection to reclaim simultaneously again.

Claims

1. a hot filling is with the manufacture method of P.E.T. container bottle neck, it is characterized in that it is with P.E.T. bottle embryo, P.E.T. container or when its bottle blowing is moulded the system process, with the mouth mould bottleneck of bottle embryo or container is covered by overcoat and to grip, and in bottleneck inside, identical with a diameter with the bottleneck internal diameter, temperature is at 130 ± 20 ℃ heater, heated from the interior bottleneck of facing, and then use the diameter cooler also identical rapidly instead with the bottleneck internal diameter, make it quick cooling, make blown P.E.T. container bottle neck grease bear higher temperature, so that the can hot solution.