WO2009031839A2 - Packing film manufacturing method and packing film - Google Patents

Packing film manufacturing method and packing film Download PDF

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Publication number
WO2009031839A2
WO2009031839A2 PCT/KR2008/005230 KR2008005230W WO2009031839A2 WO 2009031839 A2 WO2009031839 A2 WO 2009031839A2 KR 2008005230 W KR2008005230 W KR 2008005230W WO 2009031839 A2 WO2009031839 A2 WO 2009031839A2
Authority
WO
WIPO (PCT)
Prior art keywords
film layer
self
adhesive strength
film
packing
Prior art date
Application number
PCT/KR2008/005230
Other languages
English (en)
French (fr)
Other versions
WO2009031839A3 (en
Inventor
Bo-Yeong Lee
Original Assignee
Negopack.Co., Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39572799&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2009031839(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Negopack.Co., Ltd filed Critical Negopack.Co., Ltd
Publication of WO2009031839A2 publication Critical patent/WO2009031839A2/en
Publication of WO2009031839A3 publication Critical patent/WO2009031839A3/en

Links

Classifications

    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/22—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of both discrete and continuous layers
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • 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
    • B32B2038/045—Slitting
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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
    • B32B2435/00—Closures, end caps, stoppers
    • 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
    • B32B2553/00—Packaging equipment or accessories not otherwise provided for
    • 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

Definitions

  • the present invention relates to a packing film for adjusting an emission amount of an aromatic and an absorption amount of an absorbent and a method for manufacturing the same. More particularly, the present invention relates to a packing film for adjusting an emission amount of an aromatic and an absorption amount of an absorbent and a method for manufacturing the same, capable of reducing the material cost and the manufacturing process due to the removal of an adhesive to lower the manufacturing cost, adjusting a self-adhesive strength between films by regulating a self-adhesive strength of a second PP film layer, a self-adhesive strength of a first PE film layer, and an extrusion pressure to reduce the material cost and the manufacturing cost, and providing an tamper-proof function since it is difficult to bond the films to each other through the adjustment of the self-adhesive strength once the films are peeled.
  • an aromatic includes a container C, which is made from polyethylene terephthalate to receive aromatic components (not shown) therein, and a packing film is used to seal the container C in order to pack the container C such that the container C can be kept in an air-tightness state.
  • FIG. 1 is a view showing a conventional aromatic packing film.
  • the aromatic packing film includes a first film layer 110 and the second film layer 120, and further includes an adhesive layer 130.
  • the first film layer 110 is formed with a first polypropylene (PP) film layer 111 and a second PP film layer 112 to seal and adhere to the outer portion of the container C.
  • the first film layer 110 includes a nylon layer 113 that is formed on the second PP film layer 112 and provided at the inside thereof with a half -cutting part 113a.
  • the second film layer 120 includes a polyethylene (PE) film layer 121 and a polyethylene terephthalate (PET) film layer 122.
  • the adhesive layer 130 is interposed between the nylon layer 113 of the first film layer 110 and the PE film layer 121 of the second film layer 120 such that the first film layer 110 adheres to the second film layer 120.
  • an adhesive (not shown) is applied to bond the first and second PP film layers 111 and 112 to the nylon layer 113 formed with the half -cutting part 113a, and then the first and second PP film layers 111 and 112 are laminated with the nylon layer 113 through dry-lamination, thereby forming the first film layer 110(step Sl).
  • the first film layer 110 is laminated to the second film layer 120, thereby forming the aromatic packing film.
  • the method includes first and second steps.
  • a first sheet is formed by simultaneously co-extrusion molding a first PP film layer, a second PP film layer, and a first PE film layer.
  • the first PP film layer has a melting point of 135 0 C or less.
  • the second PP film layer has a melting point of 165 0 C or less, is formed with a half -cutting part formed by cutting a half of a whole thickness, and has one side with a self-adhesive strength.
  • the first PE film layer has a self-adhesive strength at a top surface thereof, which makes contact with a bottom surface of the second PP film layer having the self-adhesive strength, such that the first PE film layer can be bonded to the second PP film layer through a self- adhesive force.
  • the top surface of the first PE film layer of the first sheet is bonded to a bottom surface of a second PE film layer of a second sheet through a extrusion-lamination process such that the second sheet including a PET film layer provided at an upper portion thereof and the second PE film layer provided at a lower portion thereof is bonded to the first sheet.
  • the manufacturing cost can be lowered due to the reduction of the material cost and the manufacturing process derived from the removal of an adhesive.
  • the self-adhesive strength between films to be bonded is regulated by adjusting a self-adhesive strength of a second PP film layer, a self-adhesive strength of a first PE film layer, and an extrusion pressure
  • the packing film can be manufactured only by using a PE film having a low price. Accordingly, the manufacturing cost and the number of processes for the packing film can be reduced.
  • the present invention can provide a tamper-proof function.
  • FIG. 1 is a perspective view showing a conventional aromatic packing film
  • FIG. 2 is a flowchart showing the manufacturing process of a conventional aromatic packing film
  • FIG. 3 is a view showing a first process according to the present invention.
  • FIG. 4 is a view showing a second process according to the present invention.
  • FIG. 5 is a flowchart showing the manufacturing process of a packing film for adjusting an emission amount of an aromatic and an absorption amount of an absorbent according to the invention
  • FIG. 6 is a perspective view showing a packing film for adjusting an emission amount of an aromatic and an absorption amount of an absorbent according to the invention.
  • FIG. 7 is a view showing the use of a packing film for adjusting an emission amount of an aromatic and an absorption amount of an absorbent according to the invention.
  • a first polypropylene (PP) film layer 11 having a melting point of 135 0 C or less, a second PP film layer 12 having a melting point of 165 0 C or less, and a first polyethylene (PE) film layer 21 are simultaneously combined with each other through a co-extrusion molding scheme, thereby forming a first sheet A (step SlO).
  • the second PP film layer 12 is formed with a half- cutting part, which can be formed by inwardly cutting a half of the whole thickness of the second PP film layer 12, and has self-adhesive strength at one side thereof.
  • the first PE film layer 21 has a self-adhesive strength at a top surface thereof, which makes contact with a bottom surface of the second PP film layer 12 having the self-adhesive strength, such that the first PE film layer 21 can be bonded to the second PP film layer 12 through a self-adhesive force.
  • a typical PP film layer includes a HOMO PP film layer (obtained by polymerizing only a polypropylene), the PP film layer has a melting point of 165 0 C or less.
  • a RANDOM TERPOLYMER PP film layer (which is a compound obtained by polymerizing PP, PE, and BE-I) has an average melting point of 135 0 C or less.
  • the first PP film layer 11 according to the present invention includes the RANDOM TERPOLYMER PP film layer to have a melting point lower than that of a typical PP film layer.
  • the first PP film layer 11 includes a PP film having a low melting pint such that a container C can be sealed at a low temperature.
  • the second PP film layer 12 includes a PP film layer having a melting point higher than that of the first PP film layer 11 in order to form a half -cutting part 12a, which is obtained by cutting a half of the whole thickness of the second PP film layer, on one surface thereof.
  • a blade (not shown) may be mounted on a typical press device (not shown), and manipulated such that a half of the whole thickness of the second PP film layer 12 is cut.
  • the half -cutting part 12a may be formed on the surface of the second PP film layer 12 by allowing the second PP film layer 12 to pass through a typical roller(not shown) provided on the surface thereof with a blade (not shown).
  • the self-adhesive strength of the second PP film layer 12 the self-adhesive strength of the first PE film layer 21, or an extrusion pressure P may be adjusted.
  • step SlO when the first process (step SlO) is performed, the adhesive strength of the first PE film layer 21 is varied in a state in which the adhesive strength of one surface of the second PP film layer 12 provided on the first sheet A and the extrusion pressure P used in a co-extrusion molding scheme are fixed.
  • the second PP film layer 12 must be provided at one surface thereof with the half -cutting part 12a as described above. IHbwever, if the adhesive strength of the second PP film layer 12 is varied, the forming of the half -cutting part 12a is difficult. Accordingly, the adhesive strength of the second PP film layer 12 must be fixed to perform the first process.
  • the extrusion pressure P when co-extrusion is performed to produce products, the extrusion pressure P may be adjusted by regulating gap tolerance. In this case, since a machine (not shown) used for the co-extrusion process must be exchanged in order to adjust the extrusion pressure P, the manufacturing cost is increased. For this reason, the extrusion pressure P must be fixed.
  • Table 1 shows experimental data obtained by adjusting the self-adhesive strength of the first PE film layer 21 in a state in which the self- adhesive strength of the second PP film layer 12 and the extrusion pressure P are fixed.
  • the peel strength desired by a user that is, the adhesive strength desired by the user can be obtained by adjusting the self-adhesive strength of the first PE film layer 21.
  • a packing film 50 can be sufficiently manufactured without the unnecessary use of an adhesive and a high-priced film used to prevent the adhesive strength of the adhesive from being degraded due to a volatile aromatic component (not shown).
  • step SlO is laminated to a second sheet B including a PET film layer 23 and a second PE film layer 22 through extrusion lamination (step S20), thereby manufacturing the packing film 50 according to the present invention.
  • the second PE film layer 22 of the second sheet B and the first PE film layer 21 of the first sheet A include films having the same type such that the second PE film layer 22 can be smoothly laminated to the first PE film layer 21 through extrusion lamination.
  • the first film layer 10 sealing the container C includes the first
  • the first PP film layer 11 has a melting point of 135 0 C or less.
  • the second PP film layer 12 has a melting point of 165 0 C or less.
  • the second PP film layer 12 has one surface with a self-adhesive strength and the other surface provided with the half -cutting part 12a.
  • the second film layer 20 includes the first PE film layer 21, the second PE film layer
  • the first PE film layer 21 has a self-adhesive strength corresponding to the self-adhesive strength of the second PP film layer 12 of the first film layer 10.
  • the second PP film layer 12 of the first film layer 10 is bonded to the first PE film layer 21 of the second film layer 20 through a self-adhesive strength.
  • the packing film 50 for adjusting an emission amount of an aromatic and an absorption amount of an absorbent which is manufactured through the method of the present invention, seals the container C containing an aromatic component.
  • the container C includes a PP material, and the first PP film layer 11 sealing the container C includes a PP material, so that the first PP film layer 11 having a low melting point can seal the container C without deforming the container C.
  • the half -cutting part 12a of the second PP film layer 12 of the first film layer 10 is bonded to the first PE film layer 21 of the second film layer 20 through the self- adhesive strength. Accordingly, if a user delaminates the first PE film layer 21 of the second film layer 20 by applying predetermined force, some of the first PP film layer 11 including the same material as that of the second PP film layer 12 is removed from the first PP film layer 11 together with the second PP film layer 12 of the first film layer 10 while sticking to the second PP film layer 12 due to the self-adhesive strength.
  • the films which are bonded to each other by adjusting the self- adhesive strength as described above, are separated from each other, the films cannot be bonded to each other. Accordingly, the films may have the tamper-proof function.

Landscapes

  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Packages (AREA)
PCT/KR2008/005230 2007-09-06 2008-09-04 Packing film manufacturing method and packing film WO2009031839A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020070090439A KR100825830B1 (ko) 2007-09-06 2007-09-06 방향제 및 흡수제의 발산량 및 흡수량 조절용 층간박리필름 제조방법 및 발산량 및 흡수량 조절용 층간박리 필름
KR10-2007-0090439 2007-09-06

Publications (2)

Publication Number Publication Date
WO2009031839A2 true WO2009031839A2 (en) 2009-03-12
WO2009031839A3 WO2009031839A3 (en) 2009-05-07

Family

ID=39572799

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/005230 WO2009031839A2 (en) 2007-09-06 2008-09-04 Packing film manufacturing method and packing film

Country Status (2)

Country Link
KR (1) KR100825830B1 (ko)
WO (1) WO2009031839A2 (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105128496A (zh) * 2015-10-15 2015-12-09 昆山金华安电子科技有限公司 高粘cpp自粘保护膜的生产工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112172294A (zh) * 2020-09-04 2021-01-05 南京仙谷高新技术产业研究院有限公司 发散量和吸收量调节用层间剥离薄膜及其制备方法
KR102441696B1 (ko) * 2022-05-27 2022-09-08 주식회사 성정티앤티 두부 보호 착용구용 방향제 및 그의 제조방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6531216B1 (en) * 1999-04-15 2003-03-11 Foto-Wear, Inc. Heat sealable coating for manual and electronic marking and process for heat sealing the image
US6599997B2 (en) * 1997-06-06 2003-07-29 Daikin Industries, Ltd. Fluorine-containing adhesive and adhesive film and laminated article made by using same
US6713183B2 (en) * 1995-12-08 2004-03-30 Daikin Industries, Ltd. Fluorine-containing adhesive and adhesive film and laminated article produced by using same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020042288A (ko) * 2000-11-30 2002-06-05 장용균 이축연신 폴리에스테르 필름 및 이를 이용한 포장지

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713183B2 (en) * 1995-12-08 2004-03-30 Daikin Industries, Ltd. Fluorine-containing adhesive and adhesive film and laminated article produced by using same
US6599997B2 (en) * 1997-06-06 2003-07-29 Daikin Industries, Ltd. Fluorine-containing adhesive and adhesive film and laminated article made by using same
US6531216B1 (en) * 1999-04-15 2003-03-11 Foto-Wear, Inc. Heat sealable coating for manual and electronic marking and process for heat sealing the image

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105128496A (zh) * 2015-10-15 2015-12-09 昆山金华安电子科技有限公司 高粘cpp自粘保护膜的生产工艺

Also Published As

Publication number Publication date
KR100825830B1 (ko) 2008-04-28
WO2009031839A3 (en) 2009-05-07

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