CN1004067B - Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties - Google Patents
Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties Download PDFInfo
- Publication number
- CN1004067B CN1004067B CN85101194.2A CN85101194A CN1004067B CN 1004067 B CN1004067 B CN 1004067B CN 85101194 A CN85101194 A CN 85101194A CN 1004067 B CN1004067 B CN 1004067B
- Authority
- CN
- China
- Prior art keywords
- container
- glass fibre
- moulding
- temperature
- resisting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
The present invention provides a container shaped through biaxial orientation. The container can be easily cast and shaped by an extrusion or injection stretching blow molding method. Even if the glass fiber content is 10% smaller than the weight, the container has favorable heat resistance and pressure resistance.
Description
The present invention relates to one through the biax orientation container for moulding, this container is made by the thermoplastic base resin that contains glass fibre.
By stretch-blow thermoplastic base resin (polyethylene terephthalate resin for example, polyvinylchlorides etc.) make it biax orientation and container for moulding is compared with the container that obtains with blow moulding and had better gas barrier properties and mechanical strength, this container is not only holding aspect the beverage but also all is being widely used at aspects such as packaged food, cosmetics, medicines.
In recent years, particularly increase year by year by polyethylene terephthalate resin biax orientation container for moulding demand, and its glass transition temperatures is equally low with Koroseal, even the mechanical strength of container is because moulding increases significantly through biax orientation, always but its resistance to effect of heat has certain limit.In this case, if container is used to hold temperature and then must strengthens its resistance to effect of heat with some method when the fill more than 70 ℃.When container is used for thing that splendid attire has certain pressure and for example is filled with the beverage of carbonate gas, even the temperature of the thing of filling is not high, because temperature improves the modification that the interior pressure increase that causes can cause container bottom, make container not only lose self holding capacity, and because the impact of charges when flowing can cause that combustion is fried as bottle.
A kind of method that solves these problems of above-mentioned biax orientation container molding is, the heating stretch-blow makes container formation under the glass transition temperatures being higher than, to stablize its resistance to effect of heat, even in this way, resistance to effect of heat near glass transition temperatures is made moderate progress, but under higher ambient-air temperature, the durability when being higher than the temperature and pressure of mentioning does not at first improve.
According to another kind of method, glass fibre is mixed in the polyethylene terephthalate resin, by the characteristic of glass fibre with heat-resisting, withstand voltage and gas barrier properties of improving container and the like.Yet the plasticity that contains the themoplasticity resin stretch-blow of glass fibre changes with the difference of content of glass fiber.The content of glass fibre is many more, and various characteristics is good more, but container is stretch blow-molded then difficult more.
Therefore, even the content of glass fibre is because the cause of casting need be limited in the plastic region, and its trapping characteristic still can be brought up to certain degree, but can not obtain satisfied heat and pressure resistance property.
In view of top described, inventor of the present invention is by to by the repeatedly research of thermoplastic base resin through the biax orientation container for moulding, found a kind of new biax orientation container that contains glass fibre, this by thermoplastic base resin particularly by the polyethylene terephthalate resin, the biax orientation container of moulding such as Vinyl chloride resin has extremely excellent heat-resisting and voltage endurance.And the content of its glass fibre is in practicable stretch blow-molded scope.
An object of the present invention is to provide a biax orientation container, it can pass through employed extruding so far or injection stretch blow molding process moulding at an easy rate, and have a satisfied heat-resisting and voltage endurance, even also be like this less than 10% o'clock of weight at the content of glass fibre.
Another object of the present invention provides a kind of biax orientation container with extremely excellent heat-resisting and voltage endurance, it can be widely used as the packing container of the carbonated drink that is beverage, food and needs heating and filler and the container that is used as cosmetics, medicine, liquid etc., it in addition under higher ambient-air temperature, also be enough to stand in the danger of pressing with the bearing characteristics that keeps self and not having to explode.
Have above-mentioned purpose and the invention provides one by the thermoplastic resin molded biax orientation container that contains glass fibre, its face area stretching amplification degree is above 3 times, the content of glass fibre is 0.3% to 10% of weight, and carries out thermal finalization in 70 ℃ to 180 ℃ range of temperatures.
Its fibre diameter of the glass fibre that can use in the present invention is 5 to 20 microns, and fibre length is 1 to 6 millimeter, and length-to-diameter is 200 to 300, and it also can be tiny glass particle, and this can depend on the circumstances.
The content of glass fibre is the 0.3% to 10%, 1.5% to 4% then better of weight in the resin, and its content changes with the shape and the purposes of casting container.Yet, if the content of glass fibre just may out of reach less than the strengthening effect of 0.3% o'clock glass fibre of weight, if the content overweight of glass fibre 10% realize that with common stretch blow molding process the moulding of container just becomes exceedingly difficult.
According to the present invention, a biax orientation container can be earlier at container mold with extruding or injecting method casting of axial tension, and the temperature of this mold is controlled near the glass transition temperatures, then blows into air and makes it fully to expand in cavity.
When the mold moulding, the glass fibre of predetermined quantity is added in the resin equably, it is mixed with resin in an extruding or injected with heated cylinder, the parent batching that perhaps prepares a kind of high-load is with them and resin mixing mutually under a predetermined ratio.
Preferably finish continuously from the moulding that is formed into the biax orientation container of face area expansion more than 3 times (product that vertical and horizontal stretch) of mold, a moulding even an also available cold mould base system carry out, that is: with behind the mold cool to room temperature, be heated to glass transition temperatures once more and carry out stretch-blow.Yet, this forming method when stretch blow-molded its mold adjustment than pattern of fever base system difficulty.In pattern of fever base system, stretch blow-moldedly near being remained on glass transition temperatures, the mold temperature realizes.
With length is 3 millimeters, diameter is 10 microns a glass fibre, be added to (TEIJIN in the polyethylene terephthalate resin with the ratio that accounts for total weight 2.2%, Co., Ltd, TR-8550), they are in an injection cylinder and mixed with resin, and resin is injected into the container mold that forms a band bottom in the injection molding thereafter, and glass fibre has obtained uniform mixing in mold.
Mold weight is approximately 29 grams, its neck and a carrier ring moulding integrally together, mold is in high as far as possible temperature bottom knockout, regulate its internal temperature then at once, then mold is heated to 70 ℃ to 180 ℃ temperature stretch-blow to 500 ml containers of face area stretching amplification degree above 3 times in blow molding die.In moulding, container discharges from blow molding die heat a period of time in blow molding die after, is transported through the biax orientation container of thermal finalization then.
In the container of the biax orientation of moulding, the resin between the glass fibre, the heating by after the moulding causes pyrocondensation, and the resistance to effect of heat below heating-up temperature is stablized.In addition, since resin by glass fiber-reinforced.Thereby increased bending strength.
Be the casting condition of an embodiment below:
Machine uses Asub-50(NISEEI Asub machinery Co., Ltd)
270 °-280 ℃ of the temperature of injection cylinder
10 °-12 ℃ of the temperature of injection molding
100 ℃ of the temperature of container mold
Blow gas pressure (air) 14 kilograms per centimeter
2
Gassing time 12 seconds
105 ℃ of blown-mold temperature
It should be noted that container can carry out thermal finalization and need not heat blowing mould by the air blowing medium, the temperature of the medium of blowing in this case is decided to be 200 ℃ to 250 ℃, and gassing time remained between 3 to 10 seconds.
Twin shaft according to the present invention is expressed as follows to the performance of oriented containers and comparative example:
Hot water shrinkage's percentum
90 ℃ hot water injects bottle, measures after 12 hours
Shrinkage percentage=
In the formula
V
0: the volume of bottle before hot water injects
V: hot water injects the volume of back bottle
Bending strength
Adopt the stretching/compression testing machine TCM-500 crossbeam of SHINKO TSUSHIN KOGYO Co., Ltd manufacturing vertically load to be added on the empty receptacle, when container deformation, obtain maximum load with 500 millimeters/minute speed.
Compressive resistance (under high pressure)
Be filled with carbon dioxide (or the 7 gram CO of 3.6 times of bottle volumes
2) bottle put into one 76 ℃ controlled-temperature cabinet, check the size of bottle each several part and the variation of profile thereof after 20 minutes, 76 ℃ of following 3.6 times of volume gaseous tensions are approximately the 12-13 kilograms per centimeter
2, the stretch ratio of bottle each several part can be used following Equation for Calculating
Stretch ratio=
In the formula
A
0: container is put into the size before 76 ℃ of controlled-temperature cabinets
A: the size that container is measured after putting into behind 76 ℃ of controlled-temperature cabinets under low temperature through 12 hours
As mentioned above, according to this biax orientation container for moulding of the present invention, the existing container of the advantage that it had does not have, it has fabulous heat-resisting and voltage endurance, it is the splendid attire thing at high temperature, also can be used as the pressure container that fills CO 2 aerated beverage and similar thing and can stand higher ambient-air temperature.
Claims (3)
1, container with fabulous heat and pressure resistance property, this container is made by the themoplasticity resin that contains glass fibre, face area stretch to be enlarged more than 3 times and moulding through biax orientation, it is characterized in that the content of glass fibre is 0.3% to 10% of weight in the said vesse, and in 70 ℃ to 180 ℃ range of temperatures, carry out thermal finalization.
2, desired according to claim 1 is the container that fabulous heat and pressure resistance property is arranged, and wherein used thermoplastic base resin includes polyethylene terephthalate.
3, according to claim 1 desired container with fabulous heat and pressure resistance property, the diameter range of wherein said glass fibre is 5 to 20 microns, and length range is 1 to 6 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101194.2A CN1004067B (en) | 1985-04-01 | 1985-04-01 | Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85101194.2A CN1004067B (en) | 1985-04-01 | 1985-04-01 | Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85101194A CN85101194A (en) | 1986-10-08 |
| CN1004067B true CN1004067B (en) | 1989-05-03 |
Family
ID=4791676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85101194.2A Expired CN1004067B (en) | 1985-04-01 | 1985-04-01 | Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004067B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3501788B1 (en) * | 2005-04-28 | 2022-02-09 | Yoshino Kogyosho Co., Ltd. | Synthetic resin preform and bottle having a gradation pattern |
| US9023446B2 (en) * | 2009-09-22 | 2015-05-05 | Graham Packaging Lc, L.P. | PET containers with enhanced thermal properties and process for making same |
| US9725802B2 (en) | 2014-11-11 | 2017-08-08 | Graham Packaging Company, L.P. | Method for making pet containers with enhanced silicon dioxide barrier coating |
-
1985
- 1985-04-01 CN CN85101194.2A patent/CN1004067B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85101194A (en) | 1986-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5145632A (en) | Process for the manufacture of pet containers designed to be filled with a hot liquid | |
| JPH0343342A (en) | Pressure-proof selfstanding bottle | |
| CN1004067B (en) | Biaxially oriented moulding container with excellent heat resisting and pressure resisting properties | |
| CA2134046C (en) | Method for injection stretch blow molding of polyethylene | |
| EP0893229A1 (en) | Container having a reduced amount of acetaldehyde released therefrom and method of molding the same | |
| JPS584611B2 (en) | plastic containers | |
| GB2124543A (en) | Parison for oriented plastic containers | |
| JPS5613141A (en) | Manufacture of thermoplastic polyester container | |
| CA2455873C (en) | Method for producing bottle-shaped container mainly made of polyethylene terephthalate resin | |
| US4235837A (en) | Method of making oriented containers | |
| US4567224A (en) | Biaxially oriented container excellent in heat resisting property and pressure resisting property | |
| US4254079A (en) | Forming non-cylindrical articles from preforms of polyalkylene terephthalate | |
| CN105690812B (en) | A kind of online deep cooling reforming apparatus of high molecular material injection-moulding device | |
| EP0273897A2 (en) | Hollow containers | |
| EP0868992B1 (en) | Method for obtaining blow moulded plastic articles | |
| CA1080416A (en) | Oriented containers | |
| JPH0767732B2 (en) | Biaxial stretch blow molding method | |
| JPH0622861B2 (en) | Biaxially stretched blow molding bottle | |
| JPH0344571B2 (en) | ||
| JPH0622860B2 (en) | Biaxial stretching blow molding method | |
| JPS6410329B2 (en) | ||
| JPS5613142A (en) | Molding method for thermoplastic polyester container | |
| JPS6319330B2 (en) | ||
| JPS59103832A (en) | Polyester vessel | |
| JPH09290457A (en) | Preparation of polyester bottle and polyester bottle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |