CN102502069A - Compound easy-to-tear packaging film and manufacturing method thereof - Google Patents
Compound easy-to-tear packaging film and manufacturing method thereof Download PDFInfo
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- CN102502069A CN102502069A CN2011102577359A CN201110257735A CN102502069A CN 102502069 A CN102502069 A CN 102502069A CN 2011102577359 A CN2011102577359 A CN 2011102577359A CN 201110257735 A CN201110257735 A CN 201110257735A CN 102502069 A CN102502069 A CN 102502069A
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Abstract
The invention discloses a compound easy-to-tear packaging film and a manufacturing method thereof, wherein, the compound easy-to-tear packaging film comprises a polyethylene terephthalate film and a polythene film which are compounded; the polyethylene terephthalate film is used for strengthening, and the polythene film is used for heat-seal; intermittent damaging scores are formed on the polyethylene terephthalate film; and an easy-to-tear line is formed at the intermittent damaging scores. The manufacturing method of the compound easy-to-tear packaging film comprises the steps as follows: firstly, the polyethylene terephthalate film passes through a punching cutter, and the intermittent damaging scores are formed in preset positions on the polyethylene terephthalate film through the punching cutter in a punching manner; and secondly, the polyethylene terephthalate film provided with the punched scores and the polythene film are compounded through hot pressing so as to form the compound packaging film, and the easy-to-tear line is formed at the damaging scores of the compound packaging film. The compound easy-to-tear packaging film achieves a good tearing effect when in use, and can be torn to form a regular shape; and the manufacturing method cannot generate waste gas, and achieves lower cost.
Description
Technical field
The invention belongs to the soft package technology field, be specifically related to a kind of easy-tear type composite package film and manufacturing approach thereof.
Background technology
Traditional common flexible packaging film is not easy to be torn in use, even and after tearing, it is smooth that the place of tearing can not keep, cause using very inconvenient, also influence impression.
At present, occurred having the flexible packaging film of easy-torn line on the market, for example patent documentation CN1608951Y discloses a kind of method for making of soft packaging bag tearable mouth, and this method may further comprise the steps:
(1), designed patterns is input in the computer system; (2) control laser cutting system with computer system; (3) laser beam irradiation that described laser cutting system is generated is to the one side of soft packaging bag diaphragm seal, and described laser beam carves or cut into the line of weakness of corresponding pattern moulding in the one side of soft packaging bag diaphragm seal according to designed pattern; (4) described tearable mouth is formed according to line of weakness.
There is following weak point in this kind method: laser machine price is higher, and the manufacturing line infusion of financial resources is many; Because in most of technologies, film direction of travel and line of weakness direction be in same direction, so laser head must move the line of weakness that just can complete behind the certain distance, this rate travel is slower, loses time reduction production efficiency; The principle of laser beam indentation is to utilize the high temperature sintering film and form indentation in fact, so can produce niff, causes large quantity of exhaust gas.
Summary of the invention
The purpose of this invention is to provide a kind of easy-tear type composite package film that is prone to tear effect that has.
Another object of the present invention provides a kind of manufacturing approach of not having waste gas generation and lower-cost easy-tear type composite package film.
The technical scheme that realizes first purpose of the present invention is: a kind of easy-tear type composite package film is composited by polyethylene terephthalate rete that is used to strengthen and the polyethylene film layer that is used to seal; Said polyethylene terephthalate layer is provided with the destructive indentation of discontinuous, and forms easy-torn line at this destructiveness indentation place.
Between said polyethylene terephthalate rete and the polyethylene film layer, also be compounded with aluminium foil layer.
Said destructive indentation is the poroid indentation that on polyethylene terephthalate, forms through the die-cut mode of machinery.
Between said polyethylene terephthalate rete and the polyethylene film layer, also be compounded with aluminium foil layer.
The technical scheme that realizes second purpose of the present invention is: a kind of manufacturing approach of easy-tear type complex film may further comprise the steps:
1. with pet film process punching tool, punching tool preset position on film punches out the destructive indentation of discontinuous;
The pet film and the polyethylene foil hot pressing that 2. will punch out indentation are compounded to form composite package film, and this composite package film forms easy-torn line at this destructiveness indentation place.
Above-mentioned steps 1. in, said punching tool comprises a straight supporting plate and a punch die that is provided with the cutting of broach shape; Said pet film advances behind the certain distance at every turn, and punch die presses to pet film on the supporting plate, and on pet film, punches out the destructive poroid indentation of discontinuous.
Above-mentioned steps 1. in, comprise two cover punching tools, when die-cut, pet film stops earlier moving, two cover punching tools start synchronously die-cut actions.
Above-mentioned steps 2. in, between said polyethylene terephthalate rete and the polyethylene film layer, also be compounded with aluminium foil layer.
The present invention has positive effect: (1) product of the present invention since the higher polyethylene terephthalate rete of intensity by the poroid indentation in the die-cut place of the cutting on the punch die; The polyethylene film layer of effect is torn in the more weak influence hardly of intensity and aluminium foil layer is then complete remains; Both had good sealing effectiveness; Can just can tear with very little power again, form the regular shape opening of tearing along line of weakness, have excellent in-use performance along the easy-torn line that is provided with indentation.
(2) the inventive method no longer adopts the mode of laser light velocity scorification to make indentation; But adopt the die-cut pet film of punch die that is provided with the cutting of broach shape to obtain poroid indentation; All indentations at every easy-torn line place can be accomplished through the punch die one-step punching; And free from extraneous odour produces, comparatively environmental protection, and production efficiency is higher.
Description of drawings
Fig. 1 is a kind of structural representation of first kind of structure of product of the present invention;
Fig. 2 is a kind of cutaway view of easy-tear type composite package film shown in Figure 1;
Fig. 3 is a kind of cutaway view of second kind of structure of product of the present invention;
Fig. 4 is a kind of structural representation of the used easy-torn line former of the inventive method.
Be labeled as shown in the accompanying drawing: polyethylene terephthalate rete 1, polyethylene film layer 2, indentation 3, aluminium foil layer 4, take up roll 51, jockey pulley 52, punching tool 53, supporting plate 531, cutting 532, punch die 533.
The specific embodiment
(embodiment 1, easy-tear type composite package film)
Fig. 1 and Fig. 2 have shown a kind of specific embodiment of invention product, and Fig. 1 is a kind of structural representation of first kind of structure of product of the present invention; Fig. 2 is a kind of cutaway view of easy-tear type composite package film shown in Figure 1.
Present embodiment is a kind of easy-tear type composite package film, sees illustrated in figures 1 and 2ly, is composited by polyethylene terephthalate rete that is used to strengthen 1 and the polyethylene film layer 2 that is used to seal; Said polyethylene terephthalate layer is provided with the destructive indentation 3 of discontinuous, and forms easy-torn line at these destructiveness indentation 3 places.
Said destructive indentation is the poroid indentation 3 that on polyethylene terephthalate, forms through the die-cut mode of machinery.
Present embodiment since the higher polyethylene terephthalate rete of intensity by the poroid indentation in the die-cut place of the cutting on the punch die; The polyethylene film layer of effect is torn in the more weak influence hardly of intensity and aluminium foil layer is then complete remains; Both had good sealing effectiveness; Can just can tear with very little power again, form the regular shape opening of tearing along line of weakness, have excellent in-use performance along the easy-torn line that is provided with indentation.
(embodiment 2, easy-tear type composite package film)
Fig. 3 is a kind of cutaway view of second kind of structure of product of the present invention, has shown second kind of specific embodiment of product of the present invention.
Present embodiment and embodiment 1 are basic identical, and difference is: between said polyethylene terephthalate rete 1 and the polyethylene film layer 2, also be compounded with aluminium foil layer 4.
(manufacturing approach of embodiment 3, easy-tear type composite package film)
Fig. 4 is a kind of structural representation of the used easy-torn line former of the inventive method, has shown a kind of specific embodiment of easy-torn line composite packaging film manufacturing method among the present invention.
Present embodiment is a kind of manufacturing approach of easy-tear type composite package film; It specifically is the manufacturing approach of the foregoing description 1; May further comprise the steps: 1. with pet film process punching tool 53, punching tool 53 preset position on film punches out the destructive indentation 3 of discontinuous; The pet film and the polyethylene foil hot pressing that 2. will punch out indentation 3 are compounded to form composite package film, and this composite package film forms easy-torn line at these destructiveness indentation 3 places.
Above-mentioned steps 1. in; Through the easy-torn line former PET rete is carried out the indentation operation; Said easy-torn line former comprises the punching tool 53 of the take up roll 51, jockey pulley 52, drive system and at least two cover synchronization actions that are arranged on the head and the tail two ends; Each overlaps punching tool 53 and comprises a straight supporting plate 531 and a punch die 533 that is provided with broach shape cutting 532, and each cutting 532 is provided with over against straight supporting plate 531, and each cutting 532 is rectangular teeths.Said pet film advances behind the certain distance at every turn, and punch die 533 presses to pet film on the supporting plate 531, and on pet film, punches out the destructive poroid indentation 3 of discontinuous.
Above-mentioned steps 1. in, comprise two cover punching tools 53, when die-cut, pet film stops earlier moving, two cover punching tools 53 start die-cut actions synchronously.
Present embodiment no longer adopts the mode of laser light velocity scorification to make indentation; But adopt the die-cut pet film of punch die that is provided with the cutting of broach shape to obtain poroid indentation; All indentations at every easy-torn line place can be accomplished through the punch die one-step punching; And free from extraneous odour produces, comparatively environmental protection, and production efficiency is higher.
(manufacturing approach of embodiment 4, easy-tear type composite package film)
Present embodiment and embodiment 4 are basic identical, and difference is: step 2. in, between said polyethylene terephthalate rete 1 and the polyethylene film layer 2, also be compounded with aluminium foil layer 4.
Obviously, the above embodiment of the present invention only be for clearly the present invention is described and is done for example, and be not to be qualification to embodiment of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And these belong to conspicuous variation or the change that connotation of the present invention extends out and still belong to protection scope of the present invention.
Claims (8)
1. easy-tear type composite package film is composited by polyethylene terephthalate rete (1) that is used to strengthen and the polyethylene film layer (2) that is used to seal; It is characterized in that: said polyethylene terephthalate layer is provided with the destructive indentation (3) of discontinuous, and locates to form easy-torn line at this destructiveness indentation (3).
2. easy-tear type complex film according to claim 1 is characterized in that: between said polyethylene terephthalate rete (1) and the polyethylene film layer (2), also be compounded with aluminium foil layer (4).
3. easy-tear type complex film according to claim 1 is characterized in that: said destructive indentation is the poroid indentation (3) that on polyethylene terephthalate, forms through the die-cut mode of machinery.
4. easy-tear type composite package film according to claim 1 is characterized in that: said indentation (3) alinement shape.
5. the manufacturing approach of easy-tear type complex film according to claim 1 may further comprise the steps:
1. with pet film process punching tool (53), punching tool (53) preset position on film punches out the destructive indentation (3) of discontinuous;
The pet film and the polyethylene foil hot pressing that 2. will punch out indentation (3) are compounded to form composite package film, and this composite package film locates to form easy-torn line at this destructiveness indentation (3).
6. the manufacturing approach of easy-tear type composite package film according to claim 5 is characterized in that: above-mentioned steps 1. in, said punching tool (53) comprises a straight supporting plate (531) and a punch die (533) that is provided with broach shape cutting (532); Said pet film advances behind the certain distance at every turn; Punch die (533) presses to pet film on the supporting plate (531), and on pet film, punches out the destructive poroid indentation (3) of discontinuous.
7. the manufacturing approach of easy-tear type composite package film according to claim 5; It is characterized in that: above-mentioned steps 1. in, comprise two the cover punching tools (53), when die-cut; Pet film stops earlier moving, and two cover punching tools (53) start die-cut action synchronously.
8. the manufacturing approach of easy-tear type composite package film according to claim 5 is characterized in that: above-mentioned steps 2. in, between said polyethylene terephthalate rete (1) and the polyethylene film layer (2), also be compounded with aluminium foil layer (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102577359A CN102502069A (en) | 2011-09-02 | 2011-09-02 | Compound easy-to-tear packaging film and manufacturing method thereof |
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| CN2011102577359A CN102502069A (en) | 2011-09-02 | 2011-09-02 | Compound easy-to-tear packaging film and manufacturing method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765106A (en) * | 2012-07-31 | 2012-11-07 | 罗华荣 | Processing device and processing technology for protective films with pull tapes |
| CN103264840A (en) * | 2013-06-07 | 2013-08-28 | 浙江金石包装有限公司 | Aluminum foil openable cover and preparation method thereof |
| CN104986438A (en) * | 2015-06-11 | 2015-10-21 | 珠海新一代复合材料有限公司 | Novel membrane-coated aluminum plate or aluminum foil and preparation method thereof |
| CN111761237A (en) * | 2020-06-28 | 2020-10-13 | 青岛顺信包装制品有限公司 | Laser marking machine easy to tear line |
| CN113103728A (en) * | 2021-05-19 | 2021-07-13 | 上海紫江彩印包装有限公司 | On-line preparation method and system device of easy-to-tear composite film and prepared composite film |
| CN113119523A (en) * | 2021-04-19 | 2021-07-16 | 青岛海德包装有限公司 | Processing technology of linear easy-to-tear packaging bag |
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| CN1649717A (en) * | 2002-04-25 | 2005-08-03 | 加川清二 | Linearly easy-to-rupture thermoplastic resin film, and method and device for manufacturing the resin film |
| CN2688640Y (en) * | 2003-10-13 | 2005-03-30 | 吴旭东 | Easily-tearing plastic flexible packing composite materials |
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| JP2009292496A (en) * | 2008-06-04 | 2009-12-17 | Toppan Printing Co Ltd | Film sheet, pouch container, and method for manufacturing film sheet |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102765106A (en) * | 2012-07-31 | 2012-11-07 | 罗华荣 | Processing device and processing technology for protective films with pull tapes |
| CN103264840A (en) * | 2013-06-07 | 2013-08-28 | 浙江金石包装有限公司 | Aluminum foil openable cover and preparation method thereof |
| CN103264840B (en) * | 2013-06-07 | 2015-09-23 | 浙江金石包装有限公司 | A kind of aluminum foil openable cover and preparation method thereof |
| CN104986438A (en) * | 2015-06-11 | 2015-10-21 | 珠海新一代复合材料有限公司 | Novel membrane-coated aluminum plate or aluminum foil and preparation method thereof |
| CN104986438B (en) * | 2015-06-11 | 2018-05-01 | 珠海新一代复合材料有限公司 | A kind of novel film coating aluminium sheet or aluminium foil and preparation method thereof |
| CN111761237A (en) * | 2020-06-28 | 2020-10-13 | 青岛顺信包装制品有限公司 | Laser marking machine easy to tear line |
| CN113119523A (en) * | 2021-04-19 | 2021-07-16 | 青岛海德包装有限公司 | Processing technology of linear easy-to-tear packaging bag |
| CN113103728A (en) * | 2021-05-19 | 2021-07-13 | 上海紫江彩印包装有限公司 | On-line preparation method and system device of easy-to-tear composite film and prepared composite film |
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Application publication date: 20120620 |