US20070261809A1 - Method for making bio-degradable paper board - Google Patents

Method for making bio-degradable paper board Download PDF

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Publication number
US20070261809A1
US20070261809A1 US11/878,011 US87801107A US2007261809A1 US 20070261809 A1 US20070261809 A1 US 20070261809A1 US 87801107 A US87801107 A US 87801107A US 2007261809 A1 US2007261809 A1 US 2007261809A1
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United States
Prior art keywords
paper board
layer
bio
paper
cooling
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.)
Abandoned
Application number
US11/878,011
Inventor
Hsi-Ching Chang
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Individual
Original Assignee
Individual
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
Priority claimed from US11/171,426 external-priority patent/US20060246307A1/en
Application filed by Individual filed Critical Individual
Priority to US11/878,011 priority Critical patent/US20070261809A1/en
Publication of US20070261809A1 publication Critical patent/US20070261809A1/en
Abandoned legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/66—Coatings characterised by a special visual effect, e.g. patterned, textured
    • D21H19/70—Coatings characterised by a special visual effect, e.g. patterned, textured with internal voids, e.g. bubble coatings
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/007—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a foam layer
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B32B5/20—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material foamed in situ
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/46—Applications of disintegrable, dissolvable or edible materials
    • B65D65/466—Bio- or photodegradable packaging materials
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0264—Polyester
    • 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
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/62—Boxes, cartons, cases
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

Definitions

  • a conventional food box made by paper material generally includes a paper board and a layer which is glued to the outside of the food box.
  • the layer includes printed patters and does not contact the food.
  • the layer is made by polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) or corn starch. Only the corn starch is bio-degradable.
  • the layer has to be made to have a certain thickness and patterns are printed on the layer before the layer is glued to the food box.
  • An adhesive is located between the outside of the paper box and the layer. Besides, the layer is not directly connected to the food box, the layer might be peeled off if the adhesive is not applied evenly on the surface of the paper-made food box. Furthermore, the layer has to be made to have a certain thickness so that it includes a higher manufacturing cost. Most important is that PE, PP and PVC cannot be bio-degraded.
  • the present invention intends to provide a bio-degradable paper board which is made into food boxes and includes a layer of PET which is coated on the paper board directly by extrusion-coating machine.
  • the present invention also provide a method for making paper boards that are suitable for being contact with food and can be made to be food containers for storage of food.
  • the method for making the paper board of the present invention includes a step of pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment; a step of pre-heating the bio-degradable material to be liquid status; a step of extruding the bio-degradable material to be foam type layer and coating the foam type layer on the paper roll; a step of cooling the foam type layer by cooling rollers which evenly press the layer on the paper board; a step of cooling the layer on the paper board by cooling rollers and treated by another corona treatment, and a step of cutting the paper board into desired sections.
  • FIG. 1 shows a paper roll of the present invention
  • FIG. 2 is a cross sectional view to show the bio-degradable layer on the paper board.
  • the paper board 10 of the present invention is in a form of a paper roll and a biodegradable layer 20 is coated to the paper board 10 by extrusion-coating machine.
  • the biodegradable layer 20 is a layer of Polylactic Acid (PLA), Polyethylene Terephthalate (PET) or corn starch.
  • the bio-degradable layer 20 can be made from PET such as Biomax PET by Dupond, bio-degradable PET particles by Far-Eastern Textile Ltd (Taiwan), Polylactic Acid (PLA) particles by Nature works L.L.C., or corn starch.
  • PET such as Biomax PET by Dupond, bio-degradable PET particles by Far-Eastern Textile Ltd (Taiwan), Polylactic Acid (PLA) particles by Nature works L.L.C., or corn starch.
  • the material is heated to be liquid and extruded by an extruder and the liquid is extruded by T-Die to be foam-type bio-degradable layer 20 .
  • the paper board 10 is in a form of a paper roll which is pre-heated and then treated by corona treatment.
  • the foam type bio-degradable layer 20 is applied on the paper board 10 and both of which are fed between silicon rollers and cooling rollers to evenly press the bio-degradable layer 20 on the paper board 10 .
  • the material of the bio-degradable layer 20 is combined with fibers of the paper board 10 .
  • the pressed paper board 10 and the bio-degradable layer 20 are then treated by another corona treatment to open the orifices of the paper board 10 .
  • the paper board 10 is then can be cut and folded to be food containers.
  • the paper board 10 and the bio-degradable layer 20 are both bio-degradable and the material of the bio-degradable layer 20 can be degraded into water and carbon dioxide within few months.
  • the paper board 10 is sold in a form of paper roll which can be cut as desired.
  • the method for making the paper boards 10 includes the following steps:
  • Step 1 pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment
  • Step 2 pre-heating the bio-degradable material to be liquid status
  • Step 3 extruding the bio-degradable material to be foam type layer 20 and coating the foam type layer 20 on the paper roll which is stretched between silicon rollers to be paper board;
  • Step 4 cooling the foam type layer 20 by cooling rollers which evenly press the layer 20 on the paper board 10 ;
  • Step 6 cutting the paper board into desired sections.
  • the iron rollers are heated by providing hot water through pipes in the iron rollers and the hot water is supplied constantly to keep the iron rollers at desired temperature.
  • One of the iron rollers is coated with TEFLON such that the foam type layer 20 does not stick on the rollers.
  • the bio-degradable layer 20 is crystallized when being in contact with air and is melted again when the paper board 10 is fed by the heated iron rollers so as to be combined with the fibers of the paper board 10 .

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

A method for making the paper board includes a step of pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment; a step of pre-heating the bio-degradable material to be liquid status; a step of extruding the bio-degradable material to be foam type layer and coating the foam type layer on the paper roll; a step of cooling the foam type layer by cooling rollers which evenly press the layer on the paper board; a step of cooling the layer on the paper board by cooling rollers and treated by another corona treatment, and a step of cutting the paper board into desired sections.

Description

    FIELD OF THE INVENTION
  • This is a Continuation In Part application for applicant's former patent application Ser. No. 11/171,426, filed on Jul. 1, 2005.
    • BACKGROUND OF THE INVENTION
  • A conventional food box made by paper material generally includes a paper board and a layer which is glued to the outside of the food box. The layer includes printed patters and does not contact the food. The layer is made by polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC) or corn starch. Only the corn starch is bio-degradable. The layer has to be made to have a certain thickness and patterns are printed on the layer before the layer is glued to the food box. An adhesive is located between the outside of the paper box and the layer. Besides, the layer is not directly connected to the food box, the layer might be peeled off if the adhesive is not applied evenly on the surface of the paper-made food box. Furthermore, the layer has to be made to have a certain thickness so that it includes a higher manufacturing cost. Most important is that PE, PP and PVC cannot be bio-degraded.
  • The present invention intends to provide a bio-degradable paper board which is made into food boxes and includes a layer of PET which is coated on the paper board directly by extrusion-coating machine.
  • The present invention also provide a method for making paper boards that are suitable for being contact with food and can be made to be food containers for storage of food.
    • SUMMARY OF THE INVENTION
  • The method for making the paper board of the present invention includes a step of pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment; a step of pre-heating the bio-degradable material to be liquid status; a step of extruding the bio-degradable material to be foam type layer and coating the foam type layer on the paper roll; a step of cooling the foam type layer by cooling rollers which evenly press the layer on the paper board; a step of cooling the layer on the paper board by cooling rollers and treated by another corona treatment, and a step of cutting the paper board into desired sections.
  • The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a paper roll of the present invention, and
  • FIG. 2 is a cross sectional view to show the bio-degradable layer on the paper board.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Referring to FIGS. 1 and 2, the paper board 10 of the present invention is in a form of a paper roll and a biodegradable layer 20 is coated to the paper board 10 by extrusion-coating machine. The biodegradable layer 20 is a layer of Polylactic Acid (PLA), Polyethylene Terephthalate (PET) or corn starch.
  • The bio-degradable layer 20 can be made from PET such as Biomax PET by Dupond, bio-degradable PET particles by Far-Eastern Textile Ltd (Taiwan), Polylactic Acid (PLA) particles by Nature works L.L.C., or corn starch. The material is heated to be liquid and extruded by an extruder and the liquid is extruded by T-Die to be foam-type bio-degradable layer 20. The paper board 10 is in a form of a paper roll which is pre-heated and then treated by corona treatment.
  • The foam type bio-degradable layer 20 is applied on the paper board 10 and both of which are fed between silicon rollers and cooling rollers to evenly press the bio-degradable layer 20 on the paper board 10. The material of the bio-degradable layer 20 is combined with fibers of the paper board 10. The pressed paper board 10 and the bio-degradable layer 20 are then treated by another corona treatment to open the orifices of the paper board 10. The paper board 10 is then can be cut and folded to be food containers.
  • There is no adhesive located between the bio-degradable layer 20 and the paper board 10 and the bio-degradable layer 20 does not need to be made to be a certain thickness so that the procedures are simplified and the manufacturing cost is reduced. The paper board 10 and the bio-degradable layer 20 are both bio-degradable and the material of the bio-degradable layer 20 can be degraded into water and carbon dioxide within few months. The paper board 10 is sold in a form of paper roll which can be cut as desired.
  • The method for making the paper boards 10 includes the following steps:
  • Step 1: pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment;
  • Step 2: pre-heating the bio-degradable material to be liquid status;
  • Step 3: extruding the bio-degradable material to be foam type layer 20 and coating the foam type layer 20 on the paper roll which is stretched between silicon rollers to be paper board;
  • Step 4; cooling the foam type layer 20 by cooling rollers which evenly press the layer 20 on the paper board 10;
  • Step 5: cooling the layer 20 on the paper board 10 by cooling rollers and treated by another corona treatment, and
  • Step 6: cutting the paper board into desired sections.
  • The iron rollers are heated by providing hot water through pipes in the iron rollers and the hot water is supplied constantly to keep the iron rollers at desired temperature. One of the iron rollers is coated with TEFLON such that the foam type layer 20 does not stick on the rollers. The bio-degradable layer 20 is crystallized when being in contact with air and is melted again when the paper board 10 is fed by the heated iron rollers so as to be combined with the fibers of the paper board 10.
  • While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (3)

1. A method for making bio-degradable paper board, comprising the following steps:
step 1: pre-heating and the paper roll and removing static electricity from the paper roll by way of corona treatment;
step 2: pre-heating the bio-degradable material to be liquid status;
step 3: extruding the bio-degradable material to be foam type layer and coating the foam type layer on the paper roll;
step 4; cooling the foam type layer by cooling rollers which evenly press the layer on the paper board;
step 5: cooling the layer 20 on the paper board 10 by cooling rollers and treated by another corona treatment, and
step 6: cutting the paper board into desired sections.
2. The method as claimed in claim 1, wherein the paper roll is stretched between silicon rollers to be paper board and the iron rollers are heated.
3. The method as claimed in claim 2, wherein the iron rollers are provided with hot water which flows through the iron rollers.
US11/878,011 2005-07-01 2007-07-20 Method for making bio-degradable paper board Abandoned US20070261809A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/878,011 US20070261809A1 (en) 2005-07-01 2007-07-20 Method for making bio-degradable paper board

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/171,426 US20060246307A1 (en) 2005-04-27 2005-07-01 Bio-degradable paper board
US11/878,011 US20070261809A1 (en) 2005-07-01 2007-07-20 Method for making bio-degradable paper board

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/171,426 Continuation-In-Part US20060246307A1 (en) 2005-04-27 2005-07-01 Bio-degradable paper board

Publications (1)

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US20070261809A1 true US20070261809A1 (en) 2007-11-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3183182A4 (en) * 2014-08-20 2018-03-28 Frontier Paper & Packaging Inc. Biodegradable packaging for shipping

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547392A (en) * 1981-07-25 1985-10-15 Sony Corporation Method for making a transferrable dye medium
US5130754A (en) * 1989-04-03 1992-07-14 Canon Kabushiki Kaisha Conveying rotatable member and conveying apparatus
US6096810A (en) * 1997-09-18 2000-08-01 Monsanto Company Modified polyhydroxyalkanoates for production of coatings and films
US6111006A (en) * 1994-12-19 2000-08-29 Monsanto Company Process for preparing films and coatings
US6190741B1 (en) * 1998-12-02 2001-02-20 Tetra Laval Holdings & Finance, Sa Double corona treatment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4547392A (en) * 1981-07-25 1985-10-15 Sony Corporation Method for making a transferrable dye medium
US5130754A (en) * 1989-04-03 1992-07-14 Canon Kabushiki Kaisha Conveying rotatable member and conveying apparatus
US6111006A (en) * 1994-12-19 2000-08-29 Monsanto Company Process for preparing films and coatings
US6096810A (en) * 1997-09-18 2000-08-01 Monsanto Company Modified polyhydroxyalkanoates for production of coatings and films
US6190741B1 (en) * 1998-12-02 2001-02-20 Tetra Laval Holdings & Finance, Sa Double corona treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3183182A4 (en) * 2014-08-20 2018-03-28 Frontier Paper & Packaging Inc. Biodegradable packaging for shipping

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