CN104309259A - Method for manufacturing sheet-shaped packaging materials - Google Patents
Method for manufacturing sheet-shaped packaging materials Download PDFInfo
- Publication number
- CN104309259A CN104309259A CN201410594346.9A CN201410594346A CN104309259A CN 104309259 A CN104309259 A CN 104309259A CN 201410594346 A CN201410594346 A CN 201410594346A CN 104309259 A CN104309259 A CN 104309259A
- Authority
- CN
- China
- Prior art keywords
- layer
- packaging material
- crease line
- fold line
- refill
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/04—Punching, slitting or perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/14—Printing or colouring
- B32B38/145—Printing
Landscapes
- Wrappers (AREA)
Abstract
The invention provides a method for manufacturing sheet-shaped packaging materials. The method comprises the following steps: expanding a paper core layer and punching an opening hole, wherein a fiber direction of the paper core layer extends along the length direction; printing a printing layer on the outer surface of the paper core layer; extending a pattern and character direction of the printing layer along the width direction of the paper core layer; extruding and laminating a thermoplastic material on the printing layer to form an outermost layer; extruding and laminating a thermoplastic material on the inner side face of the core layer to form an intermediate layer; compounding a barrier layer on the inner side face of the core layer by the intermediate layer; extruding and laminating a thermoplastic material on an aluminum foil layer to form a binding agent layer; extruding and laminating a thermoplastic material on the binding agent layer to form an innermost layer; pressing a vertical fold line, a transverse fold line and an inclined fold line on one side of the outermost layer; and slitting a continuous packaging material of the plurality of sheet-shaped packaging materials to form the single-sheet packaging materials. The packaging materials can have a relatively good fold line effect by using relatively small pressure when the fold lines are pressed.
Description
Technical field
The present invention relates to a kind of packaging material manufacture method for packaged food, particularly relate to a kind of manufacture method of the flaky packaging material for packaging liquid food.
Background technology
At present, generally adopt square, triangle class package body for pourable food liquids such as fresh milk, yoghurt, fruit juice, wine, catsup, the material of this package body has multiple, and generally the most frequently used is adopt composite.Common composite at least comprise following which floor: thermoplastic outermost layer, printed layers, supporting layer, thermoplastic intermediate layer, barrier layer, adhesive layer and thermoplastic innermost layer.
Thermoplastic outermost layer is used for providing effective protection to the food liquid in package body, does not allow moisture and liquid state invade in packaging material; Printed layers is used for the information such as print product, producer, advertisement to be different from the product of other producers; Supporting layer is used for firm and strengthening packing container, and mostly be fibrous material, such as paper, this also length is called papery base layer; Supporting layer, for supporting layer and the barrier layer of boning, is protected in thermoplastic intermediate layer simultaneously, prevents food liquid from entering supporting layer; Barrier layer between thermoplastic intermediate layer and adhesive layer, for starvation, sunlight and prevent product taste to run off; It is firm that adhesive layer is used for adding between high containment and thermoplastic innermost layer; Thermoplastic innermost layer directly contacts with food liquid, for keeping the quality of food liquid, preventing food liquid relative to the infiltration of package body supporting layer simultaneously and soaking.Wherein, thermoplastic outermost layer, thermoplastic intermediate layer, adhesive layer and thermoplastic innermost layer can use the low density polyethylene (LDPE) (LDPE) produced by high-pressure process, recommendation LLDPE (LLDPE), further recommendation is by the ethyleneα-olefincopolymer (so-called metallocene PD, mLLDPE) of metallocene catalyst catalyzed polymerization; Supporting layer is generally papery base layer, can use the duplex paper (MB) etc. of the duplex paper (DULEX) of brown paper, bleached paper (FBL), non-bleached paper (UBL), bleached paper and non-bleached paper, clay coated paper, multilayer; Barrier layer can use aluminium foil, metal/inorganic oxide film, ethylene-vinyl alcohol copolymer (EVOH), nylon etc.By in aggregates for which floor compound at least above-mentioned and form compound package material, each layer of compound package material is not easily separated.Subsequently, the packaging material of rolling are cut into flaky packaging material, each flaky packaging material can make a packing container.
In order to prevent packaged food liquid from suffering secondary pollution, whole packaging forming process all will be carried out under aseptic conditions.First, be cylindrical packages material by sterile flaky packaging material roll forming, and dual-side is by longitudinal sealing-in, defines continuous, vertical tube.This tube is horizontal sealing-in in its one end, forms top or the bottom of packing container, then fills required food liquid, afterwards by corresponding for the residue end of tube horizontal sealing-in, and makes bottom or the top of packing container.Cut transverse packed region finally by cutting knife, to form single package body, and delivered to by these single package bodies final folding with in shaped device, the folding line along package body is folded into final shape by mechanical, as brick or other shapes.
So, in order to packaging process be finally convenient to shaping, first will according to the shape of packing box, in the process manufacturing this compound package material, just adopt special impression device to suppress different crease lines on this compound package material.Specifically, compound package material suppresses longitudinal crease line, lateral fold line and oblique crease line, longitudinal crease line is positioned at the vertical edges of package body, and lateral fold line is positioned at the base of package body and the position for transverse sealing, and oblique crease line is positioned at the knuckle place of package body.
Chinese invention patent application description CN103042798A discloses a kind of method manufacturing laminate wrapping material, comprises the steps: step 1, suppresses crease line and stamp out open hole at sandwich layer; Step 2, sandwich layer lateral surface is extruded lamination thermoplastic and forms outermost layer; Step 3, sandwich layer medial surface is extruded lamination thermoplastic and forms intermediate layer, barrier layer is compounded on sandwich layer medial surface by intermediate layer simultaneously; Step 4, extrudes lamination thermoplastic over the barrier layer and forms adhesive phase; Step 5, extrudes lamination thermoplastic over the binder layer and forms innermost layer; In above-mentioned steps 5, the LLDPE (MLLDPE) of blended metalloscene catalyst polymerization and low density polyethylene (LDPE) (LDPE) form the thermoplastic of described innermost layer.But even if this situation being provided with crease line in advance at sandwich layer, laminate wrapping material is in the laminated process of follow-up each thermoplastic material layer, and indentation line can be flattened by pressure roller or make crease line shoal, and makes folding forming deleterious.This is because compound package material has certain thickness, when the pressure of impression device is less, the effect of crease line on compound package material is also not obvious, is unfavorable for that follow-up FOLD AND PACK is shaping; When the pressure of impression device is larger, compound package material can produce larger stress at impression place, if now supporting layer uses fibrous material, then fibrous material is easily elongated in burst and has the danger generating crack, when tensile stress is larger, thermoplastic innermost layer in compound package material and aluminium foil layer have the danger of cracking, the danger causing the leakage of packing container and aluminium foil layer was lost efficacy.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method manufacturing flaky packaging material, and these packaging material can use less pressure can reach good crease line effect when crease line is suppressed.
For solving the problems of the technologies described above, the present invention takes following technical scheme: a kind of method manufacturing flaky packaging material, this flaky packaging material is used for making packing container, is cut and forms, comprise the steps: by the continuous packaging material comprising multiple flaky packaging material
Step 1, launch the refill layer of rolling, stamp out open hole at refill layer, this refill layer machine direction extends along its length;
Step 2, refill layer lateral surface prints printed layers, and the pattern and character direction of printed layers extends along refill layer width;
Step 3, extrudes lamination thermoplastic in printed layers and forms outermost layer;
Step 4, sandwich layer medial surface is extruded lamination thermoplastic and forms intermediate layer, barrier layer is compounded on sandwich layer medial surface by intermediate layer simultaneously;
Step 5, aluminium foil layer is extruded lamination thermoplastic and forms adhesive phase;
Step 6, extrudes lamination thermoplastic over the binder layer and forms innermost layer;
Step 7, suppresses longitudinal crease line, lateral fold line and oblique crease line from outermost layer side, this longitudinal crease line extends along refill layer width;
Step 8, by the continuous packaging material comprising multiple flaky packaging material formed through above-mentioned steps, cuts formation single piece of packaging material.
The present invention compared with prior art, because crease line carries out after packaging material lamination compound completes, so the pressure of compacting crease line does not need very large, avoid the roll-in injury that refill layer is subject in compacting crease line process, flaky packaging material has firmer crease line, there is again the well shaping easiness of packaging, eliminate the danger that thermoplastic innermost layer in packaging material and aluminium foil layer have cracking, the danger that can not cause the leakage of packing container and aluminium foil layer was lost efficacy.Further, because the pattern and character direction of printed layers extends along refill layer width, longitudinal crease line extends along refill layer width, the machine direction of refill layer in the packing container made is vertical with the length of packing container or short transverse, the packing container deflection made like this is good, container shapes good stability.
As a further improvement on the present invention, wherein, described step 3 is exchanged with the order of described step 4.
As a further improvement on the present invention, wherein, described step 7 is exchanged with the order of described step 8.
As a further improvement on the present invention, wherein, described step 7 and described step 8 perform simultaneously.
As a further improvement on the present invention, wherein, described longitudinal crease line, described lateral fold line and oblique crease line have from described outermost layer to the recessed profile of described innermost layer.
As a further improvement on the present invention, wherein, described innermost layer side has the protrusion profile corresponding with described longitudinal crease line, described lateral fold line and described oblique crease line.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the flaky packaging material using the inventive method to make.
Detailed description of the invention
Embodiment 1
A kind of method manufacturing flaky packaging material, this flaky packaging material is used for making packing container, cut by the continuous packaging material comprising multiple flaky packaging material and form, this flaky packaging material comprises the order thermoplastic outermost layer of lamination, printed layers, supporting layer, thermoplastic intermediate layer, aluminium foil layer, adhesive layer and thermoplastic innermost layer, comprises the steps:
Step 1, launch the refill layer of rolling, stamp out open hole at refill layer, this refill layer machine direction extends along its length;
Step 2, refill layer lateral surface prints printed layers, and the pattern and character direction of printed layers extends along refill layer width;
Step 3, extrudes lamination thermoplastic in printed layers and forms outermost layer;
Step 4, sandwich layer medial surface is extruded lamination thermoplastic and forms intermediate layer, barrier layer is compounded on sandwich layer medial surface by intermediate layer simultaneously;
Step 5, aluminium foil layer is extruded lamination thermoplastic and forms adhesive phase;
Step 6, extrudes lamination thermoplastic over the binder layer and forms innermost layer;
Step 7, suppresses longitudinal crease line, lateral fold line and oblique crease line from outermost layer side, this longitudinal crease line extends along refill layer width;
Step 8, by the continuous packaging material comprising multiple flaky packaging material formed through above-mentioned steps, cuts formation single piece of packaging material.
Embodiment 2
Differently from embodiment 1 be, described step 3 is exchanged with the order of described step 4.
Embodiment 3
Differently from embodiment 1 be, described step 7 is exchanged with the order of described step 8.
Embodiment 4
Differently from embodiment 1 be, described step 7 and described step 8 perform simultaneously.
After the step described in above-mentioned any embodiment, the flaky packaging material made as shown in Figure 1, flaky packaging material A has longitudinal crease line 11, lateral fold line 12 and oblique crease line 13.These three kinds of crease lines are suppressed by special indentation roller, indentation roller can adopt outer surface respectively with the impression bar of projection and recessed impression groove that, the working face one_to_one corresponding of impression bar and impression groove; Also outer surface can be adopted respectively with that without impression groove of the impression bar of projection and smooth working face.
Longitudinal crease line 11 on flaky packaging material A, lateral fold line 12 and oblique crease line 13 have from this outermost layer to the recessed profile of innermost layer, when the impression bar and the recessed impression groove that use the outer surface of indentation roller respectively with projection, now flaky packaging material A has the protrusion profile corresponding with longitudinal crease line 11, lateral fold line 12 and oblique crease line 13 towards the one side of innermost layer; When the outer surface using indentation roller respectively with the impression bar of projection and smooth working face without impression groove time, now flaky packaging material A is plane towards the one side of thermoplastic innermost layer, there is no the protrusion profile corresponding with longitudinal crease line 11, lateral fold line 12 and oblique crease line 13.Thisly to be by the benefit of outermost layer to the recessed doubling direction of innermost layer, when package body is foldable formed, packaging material be squeezed produce material stacks can carry out to the inside of package body, so neither affect the cleanliness moulding attractive in appearance of package body outer surface, be also not easy to scratch to package body burst in subsequent transportation process.
The downtrodden degree of crease line can represent by impression deflection, impression deflection is the ratio of material compared with the material without crease line of crease line, when crease line is darker, impression deflection value is less, and impression deflection can be realized by the suitable change folding line degree of depth.
Better be shaped and stablizing effect to reach packaging material, also can improve further in impression deflection, on flaky packaging material A, the impression deflection of longitudinal crease line 11 is lower than the impression deflection of lateral fold line 12, and the impression deflection of oblique crease line 13 is between the impression deflection and the impression deflection of lateral fold line 12 of longitudinal crease line 11.Adopt longitudinal crease line 11 that impression deflection is relatively weak compared with lateral fold line 12, package body can be made more easily to be shaped, meanwhile, adopt the lateral fold line 12 that impression deflection is relatively strong compared with longitudinal crease line 11, package body can be made to have good architectural characteristic.The impression deflection of oblique crease line 13 is between the impression deflection and the impression deflection of lateral fold line 12 of longitudinal crease line 11, packaging material can be made more easily to carry out around the corner when folding, and meet the also different feature of impression deflection that refill layer A can bear when grain direction is different.Concrete, the impression deflection of longitudinal crease line is in the scope of 55% ~ 65%, and the impression deflection of oblique crease line is in the scope of 60% ~ 70%, and the impression deflection of lateral fold line should be in the scope of 65% ~ 75%.Such as, time the impression deflection of longitudinal crease line is 55%, the impression deflection of oblique crease line is 60%, and the impression deflection of lateral fold line is preferably 65%; Time the impression deflection of longitudinal crease line is 60%, the impression deflection of oblique crease line is 65%, and the impression deflection of lateral fold line is preferably 70%; Time the impression deflection of longitudinal crease line is 65%, the impression deflection of oblique crease line is 70%, and the impression deflection of lateral fold line is preferably 75%.The impression deflection of longitudinal crease line is lower by 2% ~ 20% than the impression deflection of lateral fold line, is preferably 5% ~ 20%, is preferably 10%; The impression deflection of oblique crease line is lower by 2% ~ 15% than the impression deflection of lateral fold line, is preferably 2% ~ 10%, is preferably 5%.
Claims (6)
1. manufacture a method for flaky packaging material, this flaky packaging material is used for making packing container, is cut and forms, comprise the steps: by the continuous packaging material comprising multiple flaky packaging material
Step 1, launch the refill layer of rolling, stamp out open hole at refill layer, this refill layer machine direction extends along its length;
Step 2, refill layer lateral surface prints printed layers, and the pattern and character direction of printed layers extends along refill layer width;
Step 3, extrudes lamination thermoplastic in printed layers and forms outermost layer;
Step 4, sandwich layer medial surface is extruded lamination thermoplastic and forms intermediate layer, barrier layer is compounded on sandwich layer medial surface by intermediate layer simultaneously;
Step 5, aluminium foil layer is extruded lamination thermoplastic and forms adhesive phase;
Step 6, extrudes lamination thermoplastic over the binder layer and forms innermost layer;
Step 7, suppresses longitudinal crease line, lateral fold line and oblique crease line from outermost layer side, this longitudinal crease line extends along refill layer width;
Step 8, by the continuous packaging material comprising multiple flaky packaging material formed through above-mentioned steps, cuts formation single piece of packaging material.
2. a kind of method manufacturing flaky packaging material according to claim 1, is characterized in that: described step 3 is exchanged with the order of described step 4.
3. a kind of method manufacturing flaky packaging material according to claim 1, is characterized in that: described step 7 is exchanged with the order of described step 8.
4. a kind of method manufacturing flaky packaging material according to claim 1, is characterized in that: described step 7 and described step 8 perform simultaneously.
5. a kind of method manufacturing flaky packaging material according to any one of claim 1 to 4, is characterized in that: described longitudinal crease line, described lateral fold line and oblique crease line have from described outermost layer to the recessed profile of described innermost layer.
6. a kind of method manufacturing flaky packaging material according to any one of claim 1 to 4, is characterized in that: described innermost layer side has the protrusion profile corresponding with described longitudinal crease line, described lateral fold line and described oblique crease line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594346.9A CN104309259A (en) | 2014-10-29 | 2014-10-29 | Method for manufacturing sheet-shaped packaging materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410594346.9A CN104309259A (en) | 2014-10-29 | 2014-10-29 | Method for manufacturing sheet-shaped packaging materials |
Publications (1)
| Publication Number | Publication Date |
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| CN104309259A true CN104309259A (en) | 2015-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410594346.9A Pending CN104309259A (en) | 2014-10-29 | 2014-10-29 | Method for manufacturing sheet-shaped packaging materials |
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| Country | Link |
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| CN (1) | CN104309259A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953642A (en) * | 2016-10-17 | 2018-04-24 | Sig技术股份公司 | Sheet-like composite, particularly for the preparation of the food containers of dimensionally stable, has the first bending strength less than another bending strength |
| CN110300663A (en) * | 2017-03-10 | 2019-10-01 | 利乐拉瓦尔集团及财务有限公司 | A kind of print system for packaging material |
| CN112424073A (en) * | 2018-07-16 | 2021-02-26 | 利乐拉瓦尔集团及财务有限公司 | Sheet packaging material for producing sealed packages of pourable food products, sealed packages of pourable food products and method of manufacturing sealed packages of pourable product |
| CN112424074A (en) * | 2018-07-16 | 2021-02-26 | 利乐拉瓦尔集团及财务有限公司 | Method for producing packaging material |
| WO2021135866A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江美浓世纪集团有限公司 | Control method for transverse to longitudinal crease stiffness ratio |
| CN114379924A (en) * | 2021-12-08 | 2022-04-22 | 乐美包装（昆山）有限公司 | Compression roller, laminated material and packaging container |
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| CN1706634A (en) * | 2005-04-14 | 2005-12-14 | 浙江东经包装有限公司 | Composite paper-plastic board and its production process |
| CN101774449A (en) * | 2009-12-18 | 2010-07-14 | 上海界龙永发印务有限公司 | Liquid sterile composite package multicolor material and preparation method thereof |
| CN102294871A (en) * | 2011-06-13 | 2011-12-28 | 吴壮 | Method for producing lamination packing material |
| CN103042798A (en) * | 2012-12-31 | 2013-04-17 | 吴壮 | Method for manufacturing laminated packaging material |
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| WO2003037730A1 (en) * | 2001-11-02 | 2003-05-08 | Tetra Laval Holdings & Finance Sa | Web packaging material for packaging food products |
| CN1706634A (en) * | 2005-04-14 | 2005-12-14 | 浙江东经包装有限公司 | Composite paper-plastic board and its production process |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107953642A (en) * | 2016-10-17 | 2018-04-24 | Sig技术股份公司 | Sheet-like composite, particularly for the preparation of the food containers of dimensionally stable, has the first bending strength less than another bending strength |
| US11273617B2 (en) | 2016-10-17 | 2022-03-15 | Sig Technology Ag | Sheetlike composite, in particular for the production of dimensionally stable foodstuff containers, having a first bending resistance which is less than a further bending resistance |
| CN110300663A (en) * | 2017-03-10 | 2019-10-01 | 利乐拉瓦尔集团及财务有限公司 | A kind of print system for packaging material |
| CN110300663B (en) * | 2017-03-10 | 2022-04-12 | 利乐拉瓦尔集团及财务有限公司 | Printing system for packaging material |
| CN112424073A (en) * | 2018-07-16 | 2021-02-26 | 利乐拉瓦尔集团及财务有限公司 | Sheet packaging material for producing sealed packages of pourable food products, sealed packages of pourable food products and method of manufacturing sealed packages of pourable product |
| CN112424074A (en) * | 2018-07-16 | 2021-02-26 | 利乐拉瓦尔集团及财务有限公司 | Method for producing packaging material |
| US11535419B2 (en) | 2018-07-16 | 2022-12-27 | Tetra Laval Holdings & Finance S.A. | Sheet packaging material for producing sealed packages for pourable food products, sealed package for pourable food products and a method of manufacturing a sealed package for pourable products |
| US11772841B2 (en) | 2018-07-16 | 2023-10-03 | Tetra Laval Holdings & Finance S.A. | Method for producing a packaging material |
| WO2021135866A1 (en) * | 2019-12-31 | 2021-07-08 | 浙江美浓世纪集团有限公司 | Control method for transverse to longitudinal crease stiffness ratio |
| US11850819B2 (en) | 2019-12-31 | 2023-12-26 | Zhejiang Minong Century Group Co., Ltd | Control method for transverse to longitudinal crease stiffness ratio |
| CN114379924A (en) * | 2021-12-08 | 2022-04-22 | 乐美包装（昆山）有限公司 | Compression roller, laminated material and packaging container |
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Application publication date: 20150128 |