CN1239688A

CN1239688A - PET bottle blowing mould with fast cooling function

Info

Publication number: CN1239688A
Application number: CN 99114310
Authority: CN
Inventors: 李缵缨
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-08
Filing date: 1999-07-08
Publication date: 1999-12-29
Anticipated expiration: 2019-07-08
Also published as: CN1089669C

Abstract

The mold capable of cooling blown bottle fast has upper mold mouth to fix mouth of PET bottle blank, bottle-shaped mold cavity to mold the blown PET bottle, heater around the mold cavity to heat it, and cooling pipeline between the mold cavity and the heater for cold water or compressed air to flow through. The present invention can produce PET bottle capable of bearing relatively high temperature without deformation at high production efficiency and low cost.

Description

Has the P.E.T. bottle blowing mould that fast cold-working is used

The present invention relates to a kind of P.E.T. bottle blowing mould that fast cold-working is used that has.

The plastic material of existing manufacturing plastic cement bottle is generally P.E. (POLY ETHYLENE), P.P. (POLY PHOPYLENE) and P.V.C. (POLYINYL CHLORIDE), and its manufacture method is normally by the moulding of blowing mould cramping.Yet because plastic material can produce toxin, can not be approved, and the bottle periphery can produce unnecessary part of scrapping when the manufacturing cramping, need manually eliminate burr by food medication management department, labor intensive and time, and waste part is easily influential to environmental protection.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 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 is thermo-labile, and can not be used for the liquid of can heat, as fluid temperature is 70 ℃, container will be out of shape, so can only be 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 it is heat-resisting to 98 ℃ that container is wanted.Therefore traditional way is to use vial to carry out hot filling, or adds anticorrisive agent therein, and uses the mode can of cold filling instead, but vial is filled with Heavy Weight, shortcoming such as frangible, and it is harmful easily to add anticorrisive agent.Also have in addition the P.E.T. bottle container after being shaped, handle through special processing again, make the high temperature resistant suitable hot filling of its energy, but its procedure complexity, production cost height and speed of production are slow.

Purpose of the present invention is exactly in order to address the above problem, provide a kind of P.E.T. bottle container that makes production to bear higher temperature and indeformable, and can improve P.E.T. bottle speed of production greatly and can reduce the P.E.T. bottle blowing mould that the fast cold-working of having of its production cost is used.

Technical solution of the present invention:

A kind of have a P.E.T. bottle blowing mould that fast cold-working is used, it is characterized in that being provided with above mould can be to the P.E.T. bottle embryo bottleneck die orifice of clamping location in addition, the die orifice below then is formed with the die cavity of doleiform, the P.E.T. bottle embryo that can Gong propel the price of is moulded and is made shape, and be provided with the heater that impels mold heated around the mould, and in heater, all around locate near die cavity, cooling line be provided with, and pass to outside the mould by arm, so that pass to cold water and compressed air.

The present invention can be to the bottleneck of the P.E.T. bottle embryo die orifice of clamping location in addition by being provided with in bottle blowing mould upper end, the die orifice below then is formed with the die cavity of doleiform, mould for the P.E.T. bottle embryo that propels the price of and to make shape, and ring is covered with the heater that impels mold heated around the mould, all around locating near die cavity in the heater, be provided with cooling tube, and lead to outside the mould by arm, effect by heater, make bottle embryo when the clamping blowing, the temperature of mold cavity reaches 130 ± 20 ℃, P.E.T. can pass to the cold water in several seconds after bottle is shaped by the cooling line around the mold cavity, and then pass through several seconds with compressed air again, make mold cavity temperature on every side drop to 105 ± 20 ℃ rapidly,, impel the P.E.T. plastics to generate comparatively stable molecularity so that reach the effect of fast cooling cooling, can bear higher temperature and can not produce distortion, thereby the P.E.T. bottle that production filling hot solution is used becomes possibility.

The present invention can produce continuously, can avoid getting putting and wait for complicated process, quickens P.E.T. bottle speed of production and reduces production costs, and social benefit and economic benefit are very remarkable.

Fig. 1 is the sectional view of bottle embryo embodiment of the present invention;

Fig. 2 is the schematic perspective view of mould embodiment of the present invention;

Fig. 3 is the three-dimensional cross-sectional schematic of mould embodiment of the present invention.

Among the figure, 1-P.E.T. bottle embryo, 2-mould, 10-bottleneck, 20-die orifice, 21-die cavity, 22-heater, 23-cooling line arm-24.

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

As Fig. 1-3, the present invention is provided with above mould 2 can be to P.E.T. bottle embryo 1 bottleneck 10 die orifice 20 of clamping location in addition, die orifice 20 belows then are formed with the die cavity 21 of doleiform, the P.E.T. bottle embryo 1 that can Gong propel the price of is moulded and is made shape, and mould 2 is provided with the heater 22 that impels mould 2 heating on every side, and in heater 22, all around locate, be provided with cooling line 23, and lead to outside the mould 2 by arm 24 near die cavity.

When the present invention manufactures, earlier as shown in Figure 1, be made into hollow tube shape P.E.T. bottle embryo 1 with bottleneck 10 with the P.E.T. material, after being heated Microsoft, die orifice 20 places that deliver to bottle blowing mould 2 more as shown in Figure 2 are the clamping location in addition, then with compressed air by being blown in 10 pairs of P.E.T. bottles of bottleneck embryo 1, make P.E.T. bottle embryo 1 heated to 130 ± 30 ℃ mould 2 by heater 22, shape according to die cavity 21 propels the price of shaping (about 8 ± 3 seconds), P.E.T. after bottle is shaped, behind the logical cold water of several seconds of the cooling line around mould 2 die cavities 21 23, and then pass through several seconds with compressed air more again, make mould 2 die cavities 21 temperature on every side drop to 105 ± 20 ℃ rapidly, meanwhile in bottle, blow several seconds with circulating cold wind from bottleneck 10, bottle is cooled off in mould 2, open mould 2 then rapidly, take out bottle, because the P.E.T. plastics are when being shaped, be subjected to the effect of fast cooling cooling, molecularity is generated comparatively stable status, so can bear higher temperature and can not produce distortion, can be used as the filling hot solution uses, and can produce continuously, thus can quicken the production of P.E.T. bottle speed and reduce production costs, increase economic efficiency.

Claims

1. one kind has the P.E.T. bottle blowing mould that fast cold-working is used, it is characterized in that being provided with above mould can be to the P.E.T. bottle embryo bottleneck die orifice of clamping location in addition, touch the die cavity that mouthful below then is formed with doleiform, the P.E.T. bottle embryo that can Gong propel the price of is moulded and is made shape, and be provided with the heater that impels mold heated around the mould, and in heater, all around locate near die cavity, cooling line be provided with, and pass to outside the mould by arm, so that pass to cold water and compressed air.