CN1222112A - Method of forming blister pack packaging - Google Patents

Method of forming blister pack packaging Download PDF

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Publication number
CN1222112A
CN1222112A CN 97195608 CN97195608A CN1222112A CN 1222112 A CN1222112 A CN 1222112A CN 97195608 CN97195608 CN 97195608 CN 97195608 A CN97195608 A CN 97195608A CN 1222112 A CN1222112 A CN 1222112A
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CN
China
Prior art keywords
formpiston
temperature
mould
thermoplastic
ferrule
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.)
Pending
Application number
CN 97195608
Other languages
Chinese (zh)
Inventor
罗伯特·L·希克斯
劳伦斯·H·吕贝特
加里·L·科诺普
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gillette Canada Inc
Original Assignee
Gillette Canada Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gillette Canada Inc filed Critical Gillette Canada Inc
Priority to CN 97195608 priority Critical patent/CN1222112A/en
Publication of CN1222112A publication Critical patent/CN1222112A/en
Pending legal-status Critical Current

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Abstract

A method of forming blister pack packaging is provided including providing a thermoplastic material (10) and placing the thermoplastic material (10) between a pair of opposed male (24) and female (22) thermoforming dies, while cooling a portion of at least one of the dies (22, 24). The cooled portion of the die is positioned to contact the area of the thermoplastic material in which it is desired to avoid distortion.

Description

Make the method for blister pack packaging
Background of invention
The present invention relates to make the method for blister pack packaging (Blister pack packaging).
In the Retail commodity of showing often will be packaged in a kind of " bubble combination " packaging part.This bubble combination comprises flat sheet substrate and general " air bag of generally doing with cardboard or plastics " or " bubble " done with transparent plastic, then sheet substrate and bubble is bonded together, and forms the package cavity of shelving commodity.
The preparation method of the bubble part of packaging part is with the heating forming process, a part that is about to flat plastics is configured as the shape of requirement, for example, plastics are placed between a pair of yin, yang mould, the temperature of this mould is controlled in to be enough to make under the temperature of plastics deliquescing, yin, yang is embossed in together, makes on plastics, to form recess or " bubble ".
The method that forms the bubble part generally is effectively, but the undesirable plastics torsional deformation of general easy formation.Particularly, be difficult to usually maybe can not use the plastics that are printed on decorative pattern on it in advance, because pattern also will be out of shape owing to this distortion.As a result, typically pattern is added on the plastics that heat shaping with independent job step subsides, for example applique and/or label is added on the plastics.
Brief summary of the invention
In one aspect, the outstanding introduction of the present invention made improving one's methods of bubble combination.Method of the present invention advantageously can use the plastics of preprinted to heat shaping, and can not make plastics and the printed matter on plastics that bad deformation takes place.Method of the present invention also allows before heating is shaped applique or label to be added on the plastics that printed or not printing, and does not have the danger that damages applique or label during the heating forming technology.Method of the present invention can also be controlled the wall thickness of heating shaping bubble admirably.
Method of the present invention comprises the thermoplastic that provides flat basically, and this thermoplastic is placed between a pair of relative yin, yang heating finishing die, cools off the part of at least one mould simultaneously.The cooling segment of mould is positioned at the surperficial contacted position with thermoplastic, and this surface is the surface that need avoid deformation.So-called " cooling " is meant that the temperature of mould reduces with respect to normal operating temperature; Because the normal running temperature of mould may be significantly higher than room temperature, because friction, " cooling " means that the temperature with mould is reduced to the temperature that is higher than room temperature, but the temperature when being higher than mould and not being cooled.
Preferred embodiment comprises one or more following features.The part of formpiston is cooled, and the temperature of former then is controlled at and former is remained on be enough to make used plastics can be heated the temperature of shaping.This formpiston comprises: (a) ferrule, this ferrule have as aquaporin so that cool off the bore hole of this ferrule; (b) at the adiabatic wall of each side of ferrule.Plastics are preheated before being placed between the mould.Former is the vacuum forming mould.
On the other hand, the present invention highlights the thermoforming system of making blister pack packaging, and this system comprises relative former and formpiston, and one of them mould comprises the part that is cooled.As mentioned above, preferably the part of formpiston is cooled.
Below in conjunction with the description of drawings preferred embodiment, can obviously find out other features and advantages of the present invention from these explanations and claims.
Brief description of drawings
Fig. 1 is the production line perspective illustration that adopts the one embodiment of the invention method:
Fig. 2 and 2a are the cross-sectional views that is used in the heating finishing die in the production line shown in Figure 1 of 2-2 along the line respectively and 2A-2A intercepting;
Fig. 3 is the cross-sectional view along the positive mould of the another embodiment of the present invention of the 2-2 line intercepting of Fig. 1;
Fig. 4 is the cross-sectional view along the routine positive mould of another enforcement of the present invention of the 2A-2A line intercepting of Fig. 1.
The explanation of preferred embodiment
Fig. 1 illustrates the preferred method of the present invention.In this way, flat plastics 10 are pulled out from cylinder 14, have many patterns at regular intervals (preprinted pattern, label or applique) on the surface of these plastics.These plastics are at first with any heater that share 16 preheatings known in the vacuum forming technology.The technical staff clearly depends on used plastics in preheat temperature such as this technology, but this temperature is generally between 175 °~230 ℃.Make plastics pass collimator apparatus 18 subsequently, this device is any to share similar collimator apparatus, and collimator apparatus for example optics or machinery is used to align the spacing of pattern 12.Then plastics are delivered to vacuum forming station 20.
Vacuum forming station 20 comprises the heating shaping negative impression that heated and the heating shaping formpiston of cooling.The temperature of negative impression 22 preferably is controlled at about 20~80 ℃ steady temperature according to used plastics, this be the technical staff clearly.Formpiston is cooled to predetermined temperature, for example is cooled to-10 ℃ to 30 ℃, generally is cooled to 4 ℃~25 ℃, to prevent to be heated into plastics generation deformation during the shape.The temperature of selecting depends on used plastics; It is 15 ℃ for example for the suitable temperature of polyvinyl chloride (PVC).The technical staff adopts trial-and-error method can easily determine the suitable temperature of other plastics.Suitable temperature is to cannot see or cannot see fully the temperature of the deformation of printed patterns generation in advance basically.Formpiston preferably at first contacts plastics, and plastics contact negative impression more then, so that control distortion best.
Preferably only cool off the end portion 26 of formpiston, be not shaped so that do not influence the plastics heating of being undertaken by the formpiston sidewall.According to the position of pattern 12 on bubble, can cool off the zones of different of formpiston.Yet in most of the cases, at least a portion formpiston should not be cooled, and is shaped to guarantee correct heating.
Provide the formpiston shown in Fig. 2 and Fig. 2 a just can realize the cooling of formpiston end portion.Formpiston 24 comprises heart portion 27, and this heart portion has the coolant flow channel 28 that extends along its length, and this coolant flow channel has inlet 30 and outlet 32, and the end portion 26 of close mould.This coolant flow channel can make cold water or other cooling fluid flow through mould between heating shaping operational period continuously.Suitable flow diameter is quite little, so that it can be formed in the formpiston that requires width, but enough big again, so that form the cooling degree that requires with used fluid, this is that the technical staff is understandable.In an illustrated embodiment, the diameter of runner preferably is about 3~4mm.
Heart portion 37 the most handy metals or other high conductivity material are made, so that effectively cool off.The most handy heat-insulating material of the remainder of formpiston (sidewall 31 of mould) is made, as making of heat insulation layer goods or artificial compounded material, for example commodity GAROLITE by name that sells by the McMaster-Carr company in Illinois Chicago city and the laminate of YORLITE, or the Emerson﹠amp in Massachusetts Canton city; The commodity that Cuming company sells SYNTAC by name R350 artificial compounded material.Preferred its thermal conductivity of heat-insulating material is about 0.1~0.2W/ (m * K).
If the sidewall of formpiston is too cold in certain is used; Then can use another kind of formpiston shown in Figure 3, in this formpiston, between heart portion 27 and sidewall 31, adopt another kind of heat insulation layer 34.This heat insulation layer 34 can be any heat-insulating material that share such as glass mat material, for example the glass mat of the commodity sold of McMaste4-Carr company YOROLITE by name.
Other embodiment is included in claims.For example can adopt any suitable cooling means to cool off the part of mould, for example as technical staff's refrigerating circulation clearly.In addition, can also cool off mould and water not, for example use aliphatic diethyl alcohols such as ethylene glycol with other fluid, or compressed air.
In addition, as shown in Figure 4, coolant flow channel 28 can directly lead to outlet from inlet, and will extend downwardly into the termination near mould unlike shown in Fig. 2 A.Mould shown in Figure 4 is made more economical, if thereby select suitable material to make and can fully cool off the termination with the coolant flow channel of this structure, it is favourable then using this mould.

Claims (11)

1. method of making blister pack packaging may further comprise the steps:
Flat substantially thermoplastic is provided;
A part of thermoplastic is placed between a pair of relative the heating shaping former and formpiston, and the cooling part of at least one mould wherein is characterized in that simultaneously, and the needs that the cooling segment of mould is configured to the contacting thermoplastic material prevent the zone that is out of shape.
2. the method for claim 1 is characterized in that, the part of formpiston is cooled.
3. method as claimed in claim 2 is characterized in that, the above-mentioned part of formpiston is cooled to the temperature between-10 °~30 ℃.
4. method as claimed in claim 3 is characterized in that, the above-mentioned part of formpiston is cooled to the temperature between 4 °~25 ℃.
5. method as claimed in claim 2 is characterized in that the temperature of former is controlled in predetermined temperature, and this temperature is enough to thermoplastic is heated shaping.
6. method as claimed in claim 2 is characterized in that formpiston comprises: (a) ferrule, and this ferrule has the hole that is used to form cooling channels, to cool off this ferrule; (b) in the insulated side wall of each side of ferrule.
7. method as claimed in claim 6 is characterized in that above-mentioned cooling fluid is a water.
8. method as claimed in claim 6 is characterized in that, above-mentioned cooling fluid is aliphatic glycols (glycol).
9. the method for claim 1 is characterized in that, thermoplastic was preheated before putting between the mould.
10. the method for claim 1 is characterized in that, former is the vacuum forming die cavity.
11. a device that is used to make blister pack packaging comprises:
(a) heating shaping negative impression, be made to can remain on predetermined can be thermoplastic be heated the temperature of shaping;
(b) formpiston relatively separates with above-mentioned heating shaping negative impression, comprises coolant flow channel, so that cooling fluid flows through this mould.
CN 97195608 1996-06-17 1997-06-09 Method of forming blister pack packaging Pending CN1222112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 97195608 CN1222112A (en) 1996-06-17 1997-06-09 Method of forming blister pack packaging

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/664,353 1996-06-17
CN 97195608 CN1222112A (en) 1996-06-17 1997-06-09 Method of forming blister pack packaging

Publications (1)

Publication Number Publication Date
CN1222112A true CN1222112A (en) 1999-07-07

Family

ID=5179265

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 97195608 Pending CN1222112A (en) 1996-06-17 1997-06-09 Method of forming blister pack packaging

Country Status (1)

Country Link
CN (1) CN1222112A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112706355A (en) * 2019-10-25 2021-04-27 富鼎电子科技(嘉善)有限公司 Shell forming system and shell forming method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112706355A (en) * 2019-10-25 2021-04-27 富鼎电子科技(嘉善)有限公司 Shell forming system and shell forming method

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