WO2004028802A1 - 成型用ラミネート紙 - Google Patents
成型用ラミネート紙 Download PDFInfo
- Publication number
- WO2004028802A1 WO2004028802A1 PCT/JP2003/012471 JP0312471W WO2004028802A1 WO 2004028802 A1 WO2004028802 A1 WO 2004028802A1 JP 0312471 W JP0312471 W JP 0312471W WO 2004028802 A1 WO2004028802 A1 WO 2004028802A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paper
- molding
- synthetic resin
- thermoplastic synthetic
- laminated
- Prior art date
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 43
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 44
- 239000000057 synthetic resin Substances 0.000 claims abstract description 44
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 42
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 42
- 239000000758 substrate Substances 0.000 claims description 38
- 238000010030 laminating Methods 0.000 claims description 28
- 239000011800 void material Substances 0.000 claims description 25
- -1 polypropylene Polymers 0.000 claims description 21
- 239000004743 Polypropylene Substances 0.000 claims description 18
- 229920001155 polypropylene Polymers 0.000 claims description 18
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 14
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 description 38
- 238000003475 lamination Methods 0.000 description 34
- 239000000463 material Substances 0.000 description 26
- 229920005989 resin Polymers 0.000 description 19
- 239000011347 resin Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 16
- 229920005629 polypropylene homopolymer Polymers 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000002844 melting Methods 0.000 description 13
- 230000008018 melting Effects 0.000 description 13
- 230000035515 penetration Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000126 substance Substances 0.000 description 7
- 229920000098 polyolefin Polymers 0.000 description 6
- 238000009499 grossing Methods 0.000 description 4
- 229920001684 low density polyethylene Polymers 0.000 description 4
- 239000004702 low-density polyethylene Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000005003 food packaging material Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000001045 blue dye Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 238000009877 rendering Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 241000956417 Tramea virginia Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920006167 biodegradable resin Polymers 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000012611 container material Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B32B29/00—Layered products comprising a layer of paper or cardboard
-
- 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
-
- 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
- B32B27/10—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 paper or cardboard
-
- 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
- B32B3/26—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—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 a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- 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
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
- D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
-
- 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
- B32B2323/043—HDPE, i.e. high density 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
- B32B2323/04—Polyethylene
- B32B2323/046—LDPE, i.e. low density 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
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
-
- 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
- B32B2398/00—Unspecified macromolecular compounds
- B32B2398/20—Thermoplastics
Definitions
- the present invention relates to a laminated paper for molding provided with water resistance.
- a paper base material having elongation properties given by providing fine irregularities due to its ease of molding is used.
- This paper base material is made of Clupak paper (US Wes, USA) produced by passing wet paper between a dryer roll and a rubber belt that has been stretched in advance, and using the shrinkage of the rubber belt to shrink it.
- Clupak paper US Wes, USA
- crepe paper made by wrinkling wet paper on a press roll or dryer roll using doctor blade
- paper base materials are three-dimensionally molded by a molding machine such as press molding, compressed air molding, vacuum molding, or drawing molding, and are widely used as containers and packaging materials.
- paper substrates have the advantage that they can be molded at room temperature and have rigidity, but have poor water resistance, compared to synthetic resins.
- Containers and packaging materials formed by molding these paper base materials are often used as food packaging materials. In the field of food packaging materials, water resistance to dew condensation by cooling and freezing, sterilizing washing water, food and beverages, etc. is required. Therefore, in order to impart water resistance to the paper base, laminated paper for molding in which a thermoplastic synthetic resin is laminated on the surface of the paper base has been proposed and used.
- Lamination of a thermoplastic synthetic resin onto a paper substrate is usually performed by an extrusion lamination method or a co-extrusion lamination method. That is, the surface of the paper base layer taken out from the winding roll is melted by a T-die film forming machine. Extruded thermoplastic synthetic resin, or co-extruded two or more thermoplastic synthetic resins, and the nip roll consisting of a cooling roll and a rubber roll immediately used to form the paper base layer and this (these) thermoplastic synthetic resin layer. Lamination is carried out by laminating by pressing and crimping (for example, see Japanese Patent Application Laid-Open No. 10-54045).
- thermoplastic synthetic resin layer is laminated on a paper base material having elongation characteristics imparted by providing fine irregularities
- laminating of the thermoplastic synthetic resin layer on the paper base material is difficult.
- a gap is easily formed between the concave portion on the surface of the paper base material and the laminated thermoplastic synthetic resin layer, but no consideration is given to the gap at the time of lamination.
- the molding laminating paper of the present invention is a molding laminating paper in which at least one thermoplastic synthetic resin layer is laminated on at least one surface of a paper base material to which elongation characteristics have been imparted by providing fine irregularities.
- the laminated paper is characterized in that the concave portions on the surface of the paper base material are filled with a thermoplastic synthetic resin so that the average void cross-sectional area is less than 0.1 mm 2 . As described above, the average void cross-sectional area is 0.1 in the concave portion on the surface of the paper base material.
- the thermoplastic synthetic resin is filled so as to be less than mm 2 , water absorption from between the surface of the paper base material and the thermoplastic synthetic resin layer is suppressed, and the end face has excellent penetration resistance. Laminate paper for molding can be obtained.
- the laminated paper for molding of the present invention is characterized in that, of the thermoplastic synthetic resin layer, a layer in contact with the paper base is made of a single-site linear low-density polyethylene.
- the layer of the thermoplastic synthetic resin layer that comes into contact with the paper substrate is made of a syndsite-type linear low-density polyethylene
- the single-site linear low-density polyethylene flows when melted. Since this is particularly good, when it is laminated on a paper base material by the extrusion lamination method or the coextrusion lamination method, it is possible to satisfactorily fill the ⁇ portion of the surface of the paper base material.
- the laminated paper for molding of the present invention is characterized in that an outermost layer of polypropylene is provided on the single-site linear low-density polyethylene layer.
- polypropylene When the outermost layer of polypropylene is provided on the layer of single-site linear low-density polyethylene in this manner, heat resistance can be imparted to the product molded with the laminating paper for molding. .
- polypropylene has poor fluidity during hot melting.However, it can compensate for this disadvantage by co-extruding and laminating with single-site linear low-density polyethylene, which has excellent fluidity during hot melting. Can be.
- thermoplastic synthetic resin layers are laminated on at least one surface of a paper base material which has been given elongation characteristics by providing fine irregularities with a small dimension.
- a concave portion on the surface of the paper base material is filled with a thermoplastic synthetic resin so that the average void cross-sectional area is less than 1 mm 2 .
- the paper substrate is provided with elongation properties by giving fine irregularities to paper produced by intertwining and affixing plant fibers or other fibers with plant fibers to impart moldability. Things.
- Examples of such a paper base material include clupak paper, crepe paper, and condensed between a pair of rollers described in JP-T-11-5099276 to simultaneously impart longitudinal and transverse stretching characteristics.
- Such as paper manufactured by the method described above which is manufactured by shrinking the surface of a paper web by some external force.
- Any such paper base material can be used in the present invention.
- laminated paper based on paper provided with an elongation property of 10% or more of elongation property is formed of water from the end face.
- the present invention is suitable as a paper substrate to which the present invention is applied since the present invention has a large effect of improving the penetration resistance of the end face by the present invention.
- thermoplastic synthetic resin layer laminated on the surface of the paper base examples include high-density polyethylene (HD PE), low-density polyethylene (LD PE), linear low-density polyethylene (LLDPE), and shingle.
- Polyolefins such as linear low-density polyethylene (linear low-density polyethylene (SS—LLDPE) synthesized using a single-site catalyst), random polypropylene, homopolypropylene, and polymethylpentene (TPX).
- Fatty acid, polyester resin such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polystyrene resin, biodegradable resin (polylactic acid, starch resin) and the like can be used.
- thermoplastic synthetic resin so that the average void cross-sectional area of the recess is less than 0. 1 mm 2
- the extrusion temperature at the time of laminating these thermoplastic synthetic resins on the surface of the paper base material by the extrusion lamination method or the co-extrusion lamination method may be adjusted so as to minimize the melt viscosity.
- the lamination temperature By setting the lamination temperature in this way, the fluidity of the resin to be laminated improves,
- the synthetic resin is sufficiently filled in the concave portion formed in the above, and the lamination paper for molding of the present invention can be obtained.
- 33-1 10 £ is particularly preferred as a resin to be laminated on one or both surfaces of a paper substrate by extrusion lamination or co-extrusion lamination because of its particularly good fluidity during hot melting. .
- the rubber mouth which forms the Ep roll in a pair with the cooling roll usually has a hardness of 80 degrees (JISK-6253). ) It is preferable to press and press the paper substrate and the thermoplastic synthetic resin layer at a linear pressure of 15 kgf Z cm or more using the above. If the laminating resin has low fluidity during thermal melting or if the laminating thickness is small, it is difficult to fill the resin to the bottom of the recess formed in the paper base material.
- the average void cross-sectional area of the recesses 0 1 mm and less than 2 can also be a Become
- the surface of the fine uneven paper substrate Shin Pi characteristics imparted by the application of, in filling the thermoplastic synthetic resin so that the average void cross-sectional area of the recess is less than 0. 1 mm 2 is It is also effective to smooth the surface of the paper base by force rendering using a chilled opening / recalender, a Souno calender, a soft-top calender, or the like.
- the average void cross-sectional area of the recess 0. Less than 1 mm 2 and Thus, it becomes possible to fill a thermoplastic synthetic resin.
- such a resin film is sandwiched between an anchor coat resin and a paper base material which has been subjected to elongation characteristics by imparting fine irregularities and then subjected to a surface smoothing treatment. What is necessary is just to laminate.
- the above-mentioned smoothing treatment was applied to the surface of the paper substrate to which elongation characteristics were imparted by the provision of fine irregularities. If the extrusion lamination or co-extrusion lamination with a resin having excellent fluidity at the time of thermal melting is performed after the above, the filling of the thermoplastic synthetic resin into the concave portions on the surface of the paper substrate becomes more sufficient.
- the outermost layer of the laminate layer is made of polypropylene having a high melting point and heat resistance. It is desirable to form.
- extrusion lamination is difficult because polypropylene is inferior in fluidity at the time of hot melting compared to polyethylene, etc., but lamination is performed by coextruding a resin with excellent flowability at the time of hot melting and polypropylene. Thus, this disadvantage can be solved.
- SS-LLDPE is selected as the resin to be co-extruded with polypropylene
- SS-LLDPE is co-extruded and laminated so that it is in contact with the paper substrate surface, and the fluidity of SS-LLDPE during hot melting
- the polypropylene used here may be either homopolypropylene or random polypropylene.Homopolypropylene is somewhat superior to random polypropylene in terms of fluidity during heat melting, and has an adhesive property with SS-LLDPE. Therefore, it is desirable to use homopolypropylene.
- the thickness of the laminate must be determined in consideration of the unevenness of the surface of the paper substrate, but usually, the total thickness of the thermoplastic synthetic resin layer laminated on the surface of the paper substrate and other layers, It is desirable that the thickness be 40 ⁇ m or more on one side of the paper substrate. If less than 4 0 / im, it is difficult to fill the resin to the bottom of the recess formed in the paper substrate, it becomes difficult to the average void cross-sectional area as 0. Less than 1 mm 2.
- thermoplastic synthetic resin layer and other layers laminated on one or both surfaces may be added to the thermoplastic synthetic resin layer and other layers laminated on one or both surfaces, as long as the object of the present invention is not impaired.
- these additives and coatings include sizing agents, inorganic fillers (titanium oxide, carbonated calcium, clay, talc, silica, etc.) on the paper base, and one or both surfaces of the paper base.
- Commonly used additives and coating agents such as antistatic agents and anti-blocking agents (acrylic beads, glass beads, silicic acid, etc.) are used for the thermoplastic synthetic resin layer and other layers to be laminated. Can be used.
- the laminated paper for molding of the present invention can also be manufactured by a known laminating method other than the above-described extrusion laminating method, co-extrusion laminating method or San German thiramine method. That is, when these methods are used alone or in combination as appropriate, and when a thermoplastic synthetic resin layer or this thermoplastic synthetic resin layer and another layer are laminated on one or both surfaces of a paper base, paper The average void area of the ⁇ part on the substrate surface is
- thermoplastic synthetic resin can be filled so as to be less than 0.1 mm 2 .
- the evaluation was performed on the permeation resistance of the end face and the average void cross-sectional area of the concave portion on the surface of the paper substrate as follows.
- the permeation resistance of the end face was determined by cutting the test piece, which was cut to 50 mm in width and 15 O mm in length and conditioned at 23 ° C and 50% humidity, with a blue dye. It was immersed in water at 10 ° C. at a depth of 10 cm, and after 5 minutes and 2 hours, the penetration distance of the blue dye from its end face was measured and evaluated.
- the average void cross-sectional area of the part was measured by a cross-sectional micrograph of the sample using an image analyzer, and the obtained value was calculated by length-weighted average.
- Example 1 Produced by the method described in Tokuhyohei 1 1 1 5 0 9 2 7 6, basis weight 250 g / thickness 5 0 0 // m, MD direction elongation 20%, CD direction elongation 15% , Sutekihi Tosaizu degree 1 5 0 seconds, the average cross-sectional area is the paper substrate of 0. 3 mm 2 of surface recesses, LDPE (manufactured by Mitsui Chemicals "Mirason L 1 1”), the extrusion temperature 3 3 0. C.
- LDPE manufactured by Mitsui Chemicals "Mirason L 1 1
- Lamination was performed by extrusion lamination at a laminate thickness of 50 xm and a nip pressure of 15 kgf / cm, and the permeation resistance of the end face and the average void cross-sectional area of the recess were evaluated. Table 1 shows the results.
- Example 1 The paper substrate used in Example 1 was coated with SS—LLDPE (“Harmorex NH 725 N” manufactured by Nippon Polyolefin) at an extrusion temperature of 330 ° C, a laminate thickness of 50 / zm, Laminates were formed by extrusion lamination at a pressure of 15 kgf Zcm, and the end face penetration resistance and the average void cross-sectional area of the concave portions were evaluated. Table 1 shows the results.
- SS—LLDPE Hardmorex NH 725 N” manufactured by Nippon Polyolefin
- Example 1 The paper substrate used in Example 1 was coated with SS—LLDPE (“Harmolex NH725N” manufactured by Nippon Polyolefin) and homopolypropylene (Mitsui Chemicals) at a nip pressure of 15 kgfcm. Co-extrusion lamination was performed so that SS-LLDPE was in contact with the paper substrate surface, and the laminate was evaluated. Table 1 shows the results.
- SS—LLDPE Hardmolex NH725N” manufactured by Nippon Polyolefin
- homopolypropylene Mitsubishi Chemicals
- the extrusion temperature of each resin was 330 ° C for SS-LLDPE and 300 ° C for homopolypropylene, and the laminate thickness was 30 ⁇ for both SS—LLDPE and homopolypropylene. It was hot.
- the surface of the paper substrate used in Example 1 was subjected to a two-fold chill roll force rendering treatment at a linear pressure of 60 kgf Z cm.
- the average void cross-sectional area of the paper substrate surface after the force render treatment was 0.15 mm 2 .
- Homopolypropylene manufactured by Mitsui Chemicals, Inc.
- the end face permeability and the average void cross-sectional area of the concave portion were evaluated. The results are shown in Table 1.
- SS-LLDPE (Hamolex NH725N” manufactured by Nippon Polyolefin Co., Ltd.) was extruded onto the paper base material subjected to the force render treatment in Example 4 at an extrusion temperature of 330 ° C, a laminate thickness of 30 / m, Lamination was carried out by extrusion lamination at a nip pressure of 15 kgf Z cm, and the end face penetration resistance and the average void cross-sectional area of the recess were evaluated. Table 1 shows the results.
- LDPE (“Mirason L11” manufactured by Mitsui Chemicals) was extruded on the paper base material used in Example 1 at an extrusion temperature of 310 ° C, a laminate thickness of 50 m, and a -p pressure of 15 kgf Zcm. Lamination was performed to evaluate the end face penetration resistance and the average void cross-sectional area of the concave portion. Table 1 shows the results.
- Example 1 The paper substrate used in Example 1 was coated with SS—LLDPE (“Harmorex NH 725 N” manufactured by Nippon Polyolefin) at an extrusion temperature of 330 ° C., a laminate thickness of 30 jum, and a nip pressure of 1 Lamination was performed by extrusion lamination at 5 kgf Z cm, and the end face penetration resistance and the average void cross-sectional area of the concave portion were evaluated. Table 1 shows the results.
- SS—LLDPE Hardmorex NH 725 N” manufactured by Nippon Polyolefin
- Example 1 The paper substrate used in Example 1 was immersed in SS-LLDPE (Harmorex NH725N manufactured by Nippon Polyolefin) and homopolypropylene (Mitsui Chemicals) at a nip pressure of 10 kgf / cm. Then, co-extrusion lamination and lamination were performed so that SS-LLDPE was in contact with the surface of the paper substrate, and the end-face penetration resistance and the average void cross-sectional area of the concave portion were evaluated. The results are shown in Table 1. You.
- the extrusion temperature of each resin is SS-LLDPE force S 300 ° C
- homopolypropylene is 300 ° C
- laminate thickness is SS-LLDPE and homopolypropylene 30 // m.
- Homopolypropylene (made by Mitsui Chemicals) is laminated on the paper substrate used in Example 1 by extrusion lamination at an extrusion temperature of 300 ° C., a laminate thickness of 50 / im, and a nip pressure of 15 kgf Z cm. Then, the end face penetration resistance and the average void cross-sectional area of the concave portion were evaluated. Table 1 shows the results.
- Homopolypropylene (made by Mitsui Chemicals) was extruded on the paper substrate used in Example 4 at an extrusion temperature of 300 ° C., a laminate thickness of 30 // m, and a nip pressure of 15 kgf / cm. After lamination, the end face penetration resistance and the average void cross-sectional area of the concave portion were evaluated. Table 1 shows the results.
- Comparative Example 4 the extrusion temperature of SS-LLDPE was lower and the nip pressure was lower than in Example 3, and the fluidity of homopolypropylene itself was not sufficient. Due to the small thickness of the pyrene laminate, the concave resin on the surface of the paper substrate could not be sufficiently filled with the laminate resin. As a result, the laminated paper for molding manufactured in these comparative examples had an average void cross-sectional area of 0.1 mm 2 or more in the concave portion, and the end face had poor permeation resistance.
- the molding laminated paper according to the present invention As described above, the molding laminated paper according to the present invention, the concave portion of the front surface of the paper substrate, a thermoplastic synthetic resin so that the average void cross-sectional area that is less than 0. 1 mm 2 is filled Therefore, water absorption from between the surface of the paper base material and the thermoplastic synthetic resin layer is suppressed, and a molding laminated paper having excellent permeation resistance at its end surface can be obtained.
- the layer of the thermoplastic synthetic resin layer which is in contact with the paper base is made of single-site linear low-density polyethylene. Since the linear linear low-density polyethylene has particularly good fluidity during hot melting, it can be filled into the recesses on the surface of the paper substrate by laminating it on the paper substrate by extrusion lamination and co-extrusion lamination. can do.
- the laminated paper for molding according to the present invention was molded with the laminating paper for molding. To something Heat resistance can be imparted.
- co-extrusion of polypropylene with single-site linear low-density polyethylene which has excellent fluidity during thermal melting, results in poor fluidity during thermal melting. Can make up for the shortcomings of polypropylene.
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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AU2003266703A AU2003266703A1 (en) | 2002-09-30 | 2003-09-30 | Laminated paper for molding |
JP2004539576A JP4240487B2 (ja) | 2002-09-30 | 2003-09-30 | 成型用ラミネート紙 |
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JP2002286040 | 2002-09-30 | ||
JP2002-286040 | 2002-09-30 |
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WO2004028802A1 true WO2004028802A1 (ja) | 2004-04-08 |
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PCT/JP2003/012471 WO2004028802A1 (ja) | 2002-09-30 | 2003-09-30 | 成型用ラミネート紙 |
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JP (1) | JP4240487B2 (ja) |
KR (1) | KR20050071530A (ja) |
AU (1) | AU2003266703A1 (ja) |
WO (1) | WO2004028802A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006022439A (ja) * | 2004-07-08 | 2006-01-26 | Hokuetsu Paper Mills Ltd | 成型紙及びその製造方法 |
WO2007126080A1 (ja) | 2006-04-28 | 2007-11-08 | Ishida Co., Ltd. | 立体デザインを有する袋を製造する装置 |
WO2007126079A1 (ja) | 2006-04-28 | 2007-11-08 | Ishida Co., Ltd. | 立体デザインを有する袋 |
JP2011116407A (ja) * | 2009-12-03 | 2011-06-16 | Dainippon Printing Co Ltd | 紙容器用包装材料及び紙容器 |
Families Citing this family (1)
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---|---|---|---|---|
KR102321693B1 (ko) * | 2020-12-30 | 2021-11-03 | 하호 | 압착 가열에 의해 자체밀봉이 가능한 적층시트 및 이를 이용한 친환경 포장재 |
Citations (7)
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JPH05138829A (ja) * | 1991-11-20 | 1993-06-08 | Showa Denko Kk | ラミネート加工紙 |
WO1996003281A1 (en) * | 1994-07-22 | 1996-02-08 | Giorgio Trani | Paper composite for making packages for liquid or granular products |
WO1996031647A1 (en) * | 1995-04-07 | 1996-10-10 | Cartiere Cariolaro S.P.A. | Method for producing yieldable paper and plant for implementing the method |
JPH09193323A (ja) * | 1996-01-18 | 1997-07-29 | Toppan Printing Co Ltd | 紙を含む積層材料から成る容器 |
JPH1029255A (ja) * | 1996-07-12 | 1998-02-03 | Toyobo Co Ltd | 紙容器用ヒートシール性フィルム、これを用いた積層体及び紙容器 |
JP2000289164A (ja) * | 1999-04-07 | 2000-10-17 | Dainippon Printing Co Ltd | 紙容器 |
JP2000296588A (ja) * | 1999-04-14 | 2000-10-24 | Mitsui Kagaku Platech Co Ltd | 複合セパレートシート及びその製造方法 |
-
2003
- 2003-09-30 JP JP2004539576A patent/JP4240487B2/ja not_active Expired - Fee Related
- 2003-09-30 KR KR1020057005510A patent/KR20050071530A/ko not_active Application Discontinuation
- 2003-09-30 WO PCT/JP2003/012471 patent/WO2004028802A1/ja active Application Filing
- 2003-09-30 AU AU2003266703A patent/AU2003266703A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05138829A (ja) * | 1991-11-20 | 1993-06-08 | Showa Denko Kk | ラミネート加工紙 |
WO1996003281A1 (en) * | 1994-07-22 | 1996-02-08 | Giorgio Trani | Paper composite for making packages for liquid or granular products |
WO1996031647A1 (en) * | 1995-04-07 | 1996-10-10 | Cartiere Cariolaro S.P.A. | Method for producing yieldable paper and plant for implementing the method |
JPH09193323A (ja) * | 1996-01-18 | 1997-07-29 | Toppan Printing Co Ltd | 紙を含む積層材料から成る容器 |
JPH1029255A (ja) * | 1996-07-12 | 1998-02-03 | Toyobo Co Ltd | 紙容器用ヒートシール性フィルム、これを用いた積層体及び紙容器 |
JP2000289164A (ja) * | 1999-04-07 | 2000-10-17 | Dainippon Printing Co Ltd | 紙容器 |
JP2000296588A (ja) * | 1999-04-14 | 2000-10-24 | Mitsui Kagaku Platech Co Ltd | 複合セパレートシート及びその製造方法 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006022439A (ja) * | 2004-07-08 | 2006-01-26 | Hokuetsu Paper Mills Ltd | 成型紙及びその製造方法 |
JP4634080B2 (ja) * | 2004-07-08 | 2011-02-16 | 北越紀州製紙株式会社 | 成形紙 |
WO2007126080A1 (ja) | 2006-04-28 | 2007-11-08 | Ishida Co., Ltd. | 立体デザインを有する袋を製造する装置 |
WO2007126079A1 (ja) | 2006-04-28 | 2007-11-08 | Ishida Co., Ltd. | 立体デザインを有する袋 |
JP2011116407A (ja) * | 2009-12-03 | 2011-06-16 | Dainippon Printing Co Ltd | 紙容器用包装材料及び紙容器 |
Also Published As
Publication number | Publication date |
---|---|
KR20050071530A (ko) | 2005-07-07 |
AU2003266703A1 (en) | 2004-04-19 |
AU2003266703A8 (en) | 2004-04-19 |
JP4240487B2 (ja) | 2009-03-18 |
JPWO2004028802A1 (ja) | 2006-01-19 |
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