CN106553384B - Composite paper, manufacturing method thereof and papermaking equipment - Google Patents
Composite paper, manufacturing method thereof and papermaking equipment Download PDFInfo
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- CN106553384B CN106553384B CN201510616990.6A CN201510616990A CN106553384B CN 106553384 B CN106553384 B CN 106553384B CN 201510616990 A CN201510616990 A CN 201510616990A CN 106553384 B CN106553384 B CN 106553384B
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- embossing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
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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
- 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
- B32B29/005—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 another layer of paper or cardboard layer
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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
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/06—Embossing
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/08—Interconnection of layers by mechanical means
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- 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
- D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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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
- B32B2555/00—Personal care
- B32B2555/02—Diapers or napkins
Abstract
The invention discloses composite paper, which comprises at least two base layers of paper, wherein each base layer of paper is provided with an embossing pattern, the embossing pattern comprises at least two embossing units, each base layer of paper is provided with two base surfaces which are arranged oppositely, at least part of the embossing units on each base layer of paper are recessed from one base surface of the base layer of paper, the other base surface is kept to be a plane or is raised corresponding to the recessed part, the at least two base layers of paper are bonded into a whole through at least part of the bottom walls of the embossing units, and the ratio of the thickness of the bottom walls of the embossing units of the two base layers of paper to the distance between the two base surfaces is 1:3-1: 2. The invention also provides a manufacturing method of the composite paper and papermaking equipment. The composite paper has good softness and good touch feeling by setting the ratio of the thickness of the bottom wall of the embossing unit to the distance between the two base surfaces to be in the range of 1:3 to 1:2.
Description
Technical Field
The invention relates to composite paper, in particular to a manufacturing method of the composite paper and papermaking equipment.
Background
The cellulose fiber structure is widely applied to living goods such as toilet paper, napkin paper and the like. Typically, the paper product is a cellulosic fibrous structure having at least one base layer, typically paper, laminated together in face-to-face relationship to form a laminate. In order to meet the demand of consumers for beauty, manufacturers adopt an embossing process to paper towels comprising multiple layers of base paper, and the embossing process not only enables the paper towels to be beautiful, but also increases the surface area of the layers and improves the bulkiness, the water holding capacity and the softness.
In the prior art, multi-layer paper is usually embossed, however, the thickness increase of the multi-layer paper is limited, and even the thickness increase is not improved, so researchers use a technology of pressing the multi-layer paper after embossing, so that the multi-layer paper is combined together to improve the thickness of the paper, and the like, but the paper after embossing is pressed by using a laminating wheel, so that the whole embossing effect of the paper surface is usually damaged, and meanwhile, the bonding strength is low, and the layering phenomenon is prominent under the condition of water absorption; the method of bonding paper layers by using an adhesive is contrary to the desired goals of improving the softness and water absorption capacity of paper after embossing the paper, because the adhesive is dried after the paper layers are bonded by using the adhesive, the paper is stiff, and the water absorption capacity of the paper is reduced.
It can be seen that how to increase the bonding strength between the sheets of the multi-layer embossed composite paper, and to make the paper surface maintain good softness, have good water absorption performance, and reduce embossing loss has been a problem in many times in the art.
Disclosure of Invention
The invention mainly solves the technical problem of providing the embossed composite paper which has good bonding strength between papers, good flexibility and low water absorption.
In order to solve the technical problem, in one technical solution of the present invention, a composite paper is provided, where the composite paper includes at least two base papers, each of the base papers has an embossed pattern formed thereon, the embossed pattern includes at least two embossed units, each of the base papers has two base surfaces disposed opposite to each other, at least some of the embossed units on each of the base papers are recessed from one of the base surfaces of the base paper, the other base surface is kept as a plane or raised in an area corresponding to the recessed portion, the at least two base papers are bonded together through at least some of the bottom walls of the embossed units, and a ratio of a thickness of the bottom walls of the embossed units of the two base papers to a distance between the two base surfaces is 1:3-1: 2.
In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a papermaking apparatus for composite paper, including:
the embossing device comprises two embossing devices and at least two embossing rollers, wherein the two embossing devices are respectively used for embossing two pieces of base layer paper, each embossing device is provided with an embossing roller and an embossing roller which are parallel and opposite to each other, the two embossing rollers of the two embossing devices are parallel and spaced, and the embossing rollers are convexly provided with at least two convex parts;
the embossing roller and the embossing roller are matched to enable the base paper passing between the embossing roller and the embossing roller to generate an embossing pattern, the embossing pattern comprises at least two embossing units, the base paper is provided with two base surfaces which are arranged oppositely, the embossing units are recessed from one base surface of the base paper, the other base surface is kept to be a plane or is raised corresponding to the recessed part, and the ratio of the thickness of the bottom wall of the embossing unit of the two base papers to the distance between the two base surfaces is 1:3-1: 2;
the two embossing rollers of the two embossing devices are matched to enable the two base layer papers passing between the two embossing rollers to be pressed together, so that the two base layer papers are bonded into a whole through at least part of the bottom walls of the embossed units of the bulges.
In order to solve the above technical problem, another technical solution of the present invention is to provide a method for manufacturing composite paper, including the steps of:
providing two base layer papers, wherein each base layer paper comprises two base surfaces which are arranged oppositely;
embossing the two base papers respectively to form an embossing pattern on each base paper, wherein the embossing pattern comprises at least two embossing units, at least part of the embossing units on each base paper are recessed from one basic surface of the base paper, the other basic surface is kept to be flat or raised corresponding to the recessed part, and the ratio of the thickness of the bottom wall of the embossing unit of each base paper to the distance between the two basic surfaces is 1:3-1: 2;
and carrying out pressing treatment on the embossed two base layer paper so as to bond the two base layers into a whole through at least part of the bottom walls of the embossing units.
Different from the prior art, the composite paper provided by the invention has the advantages that the embossing units are formed on at least two base paper layers, the convex parts of the embossing units are arranged correspondingly and oppositely, and the ratio of the thickness of the bottom wall of the embossing units of the two base paper layers to the distance between the two base surfaces is set to be in the range of 1:3-1:2, so that the composite paper has good flexibility, and the composite paper has good touch.
Drawings
FIG. 1 is a schematic cross-sectional view of a composite paper according to an embodiment of the present invention;
FIG. 2 is an enlarged, fragmentary schematic view of an embodiment of the composite paper shown in FIG. 1;
FIG. 3 is an enlarged, fragmentary schematic view of another embodiment of the composite paper shown in FIG. 1;
FIG. 4 is an enlargement of the composite paper shown in FIG. 1 with the embossing unit having a bottom wall too loose
A schematic diagram;
FIG. 5 is an enlargement of the composite paper shown in FIG. 1 with the embossing unit having a bottom wall that is too dense
A schematic diagram;
fig. 6 is a schematic view of a papermaking apparatus of the composite paper of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to fig. 1 and 2, in the composite paper 10 according to the preferred embodiment of the present invention, the composite paper 10 may be, but is not limited to, a household paper, and the composite paper 10 includes at least two base papers 11 and an adhesive layer 13, and each base paper 11 is a single-layer paper or a multi-layer paper.
Each of the base layer papers 11 is formed with an embossing pattern including at least two embossing units 113. The base paper 11 may be a nonwoven paper or a fiber paper. The fiber paper is formed by at least one of wood pulp fiber, bamboo pulp fiber, straw pulp fiber and reed pulp fiber. In this embodiment, the composite paper 10 includes two base paper 11, each base paper 11 includes two base surfaces 115 disposed opposite to each other, at least a portion of the embossing unit 113 on each base paper 11 is recessed from one base surface 115 of the base paper 11, and the other base surface 115 is kept as a plane or raised in a region corresponding to the recessed portion.
In this embodiment, at least a portion of the embossing unit 113 on each base paper 11 is recessed from one base surface 115 of the base paper 11 and raised from the other base surface 115.
Referring to fig. 3, in other embodiments, at least a portion of the embossing units 113 on each base paper 11 are recessed from one base surface 115 of the base paper 11, and the other base surface 115 remains planar.
Each embossing unit 113 includes a bottom wall 1131 and a side wall 1133 adjacent to the bottom wall 1131. In this embodiment, the embossing units 113 of the two base sheets 11 correspond one to one, and the bottom walls 1131 of the two corresponding embossing units 113 are close to each other.
The embossing unit 113 is in a dot shape or a line shape, and specifically, the embossing unit 113 is in a dot shape if the ratio of the length to the width is less than or equal to 5; the embossing unit 113 has a linear shape if the ratio of the length to the width is greater than 5.
The two base papers 11 are bonded together by at least a part of the bottom wall of the embossing unit 113, that is, the area of the other basic surface 15 corresponding to the recessed portion of the embossing unit 113 of one of the base papers 11 of the at least two base papers 11 is bonded to the area of the other basic surface 15 corresponding to the recessed portion of the embossing unit 113 of the other base paper 11, and the other portions are not bonded.
The adhesive layer 13 is formed between the two base papers 11, and further, the adhesive layer 13 is formed between the bottom walls 1131 of the embossing units 113 corresponding to the two base papers 11 to bond the two base papers 11 together. The adhesive layer 13 is formed by curing an adhesive, the adhesive is made of a polyvinyl alcohol adhesive or a thermosetting cationic resin adhesive, and the thermosetting cationic resin adhesive is polyamide resin. When the adhesive is a polyethylene adhesive, the adhesive comprises 2-6% of polyvinyl alcohol solid and 85% -95% of aqueous solution, wherein the aqueous solution is preferably 92% -95%; when the adhesive is a thermosetting cationic resin adhesive, the adhesive comprises more than 1% of thermosetting cationic resin solid and 85% -95% of aqueous solution, wherein the aqueous solution is preferably 92% -95%.
The ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base sheets 11 to the distance between the two base surfaces 115 is 1:3 to 1:2. Further, the ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base papers 11 to the distance between the two base surfaces 115 is 1:2.75-1: 2.3.
Referring to fig. 4, when the ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base papers 11 to the distance between the two base surfaces 115 is greater than 1:2, the area of the bottom wall 1131 is too loose, when the two base papers 11 are pressed together, the adhesive is pressed by force, and is excessively immersed into the bottom wall 1131 and is immersed into the embossing unit 113 through the bottom wall 1131, and after the adhesive is dried, the bottom wall 1131 of the two base papers 11 is consolidated into a mass or forms adhesive particles, which causes discomfort in the use of the composite paper 10.
Referring to fig. 5, when the ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base papers 11 to the distance between the two base surfaces 115 is less than 1:3, the area of the bottom wall 1131 is too dense, and when the two base papers 11 are pressed together, the adhesive is squeezed by force and cannot be smoothly immersed into the bottom 1131, and flows into the side wall 1135, so that the coverage area of the adhesive layer 13 formed after the adhesive is dried is too large, the side wall 1135 of the embossing unit 113 is hard, and the flexibility of the composite paper 10 is low.
When at least a part of the embossing units 113 on each base paper 11 is recessed from one base surface 115 of the base paper 11 and the other base surface 115 is raised from the area corresponding to the recessed portion, the thickness of the composite paper 10 is equal to the sum of the overall thicknesses of the two base papers 11, wherein the overall thickness of the base paper 11 is the distance between the two base surfaces 115 of the base paper 11 plus the height of the embossing units 113 formed on the base paper 11 protruding outward from one base surface 115 of the base paper 11; when at least a part of the embossing units 113 on each base paper 11 are recessed from one base surface 115 of the base paper 11 and the other base surface 115 is kept flat, the thickness of the composite paper 10 is equal to the sum of the distances between the two base surfaces 115 of the two base papers 11.
It is understood that in other embodiments, the composite paper 10 includes a three-base paper 11, wherein two base papers 11 form an embossed pattern, and the other base paper 11 does not form an embossed pattern, and the base paper 11 without the embossed pattern is sandwiched between the two base papers 11 with the embossed pattern.
Referring to fig. 6, the preferred embodiment of the present invention also provides a papermaking apparatus 30 for manufacturing the composite paper 10, which includes two embossing devices 31 and a coating device 33.
The two embossing devices 31 are used for embossing the two base papers 11, respectively. Each embossing device 31 comprises an embossing roller 311 and an embossing roller 313, the embossing roller 311 and the embossing roller 313 are arranged in parallel and opposite to each other, at least two protrusions 315 are convexly arranged on the embossing roller 311 to cooperate with the embossing roller 313 to generate an embossing pattern on the base paper 11 passing therebetween, the embossing pattern comprises at least two embossing units 113, each base paper 11 comprises two base surfaces 115 arranged oppositely, at least a part of the embossing units 113 on each base paper 11 are recessed from one base surface 115 of the base paper 11, and the other base surface 115 is kept as a plane or a corresponding recessed part area.
It is understood that the embossing patterns formed by the raised portions 315 on the two embossing rollers 311 may be the same or different. In this embodiment, the embossing patterns formed by the raised portions 315 on the two embossing rolls 311 are the same.
The two embossing rollers 311 of the two embossing devices 31 are arranged in parallel and at intervals to cooperate with each other to press the two base paper 11 passing therebetween, so that the at least two base paper 11 are bonded into a whole by the embossing units 113 of at least some of the protrusions.
It is understood that when at least a portion of the embossing units 113 on each base paper 11 is formed to be recessed from one base surface 115 of the base paper 11 and the area of the recessed portion corresponding to the other base surface 115 is raised, the surface of the embossing cylinder 313 opposite to the embossing roller 311 is formed with grooves (not shown) corresponding to at least two raised portions 315; when at least a part of the embossing units 113 on each of the base sheets 11 is formed to be recessed from one basic surface 115 of the base sheet 11 and the other basic surface 115 is maintained to be flat, the surface of the embossing cylinder 313 is smooth.
The embossing rollers 311 of the two embossing devices 31 have the same structure, and each embossing roller has a protrusion 315 matched with the raised embossing unit 113 in shape, and the protrusion 315 of the embossing roller 311 of one embossing device 31 is opposite to the protrusion 315 of the embossing roller 311 of the other embossing device 31 to press the two base sheets 11 together.
The coating device 33 is used for applying glue to the surface of one of the two base sheets 11 formed with the embossing unit 113, and coating adhesive on the bottom wall 1131 of the embossing unit 11 to better bond the two base sheets 11 together. The coating device 33 is disposed opposite to the embossing roller 311 of one of the embossing devices 31, and the coating device 33 is disposed on the side of the embossing roller 311 after contacting the embossing roller 313 in the rotational direction.
The coating device 33 includes a container 331, a transfer roller 333, and a glue roller 335. Storage tank 331 is used for holding the binder, transfer roller 333 is used for with binder in the storage tank 331 shifts to on the glue spreader 335, glue spreader 335 is arranged in to one side surface sizing of the embossing unit 113 in one of them basic unit's paper 11 after the knurling, glue spreader 335 sets up with embossing roller 311 relatively, so, binder in the storage tank 331 shifts under the effect of transfer roller 333 to the surface of glue spreader 335, and then it is right one side surface coating adhesive of the diapire 1131 of embossing unit 113.
It is understood that in other embodiments, the transfer roller 333 may be omitted.
The manufacturing method of the composite paper 10 provided by the invention comprises the following steps:
two base papers 11 are provided, each of the base papers 11 includes two base surfaces 115 disposed opposite to each other.
And embossing the two base layer papers 11 respectively to form an embossing pattern on each base layer paper 11, wherein the embossing pattern comprises at least two embossing units 113. At least a part of the embossing units 113 on each of the base sheets 11 is recessed from one of the base surfaces 115 of the base sheet 11, and the other base surface 115 is kept flat or raised in a region corresponding to the recessed portion.
The surface of one of the two base papers 11 formed with the embossing pattern, which forms the embossing unit 113, is sized so that the one side surface of the bottom wall 1131 of the embossing unit 113 is coated with an adhesive.
And performing press-fit treatment on the two base paper 11 after the sizing treatment, so that the two base paper 11 is bonded into a whole through at least part of the bottom wall 1131 of the embossing unit 113, and the ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base paper 11 to the distance between the two base surfaces 115 is 1:3-1: 2.
The binding force of the two base layer paper 11 in the pressing treatment is 2-7bar, or 3-6bar, or 4-5 bar.
Different from the prior art, the composite paper 10 provided by the invention has at least two base paper 11 formed with the embossing units 113, and the raised portions 315 of the embossing units 113 are arranged in a one-to-one correspondence and opposite to each other, so that the composite paper 10 has a larger thickness and good flexibility, and the touch feeling of the composite paper 10 is good. The ratio of the thickness of the bottom wall 1131 of the embossing unit 113 of the two base papers 11 to the distance between the two base surfaces 115 is set in the range of 1:3 to 1:2 so that the adhesive layer 13 does not excessively infiltrate into the bottom wall 1131 and the side walls 1133 of the embossing unit 113, so that the composite paper 10 can maintain water absorbency, flexibility and paper strength.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A composite paper characterized by:
the composite paper comprises at least two base paper, each base paper is provided with an embossing pattern, the embossing pattern comprises at least two embossing units, each base paper is provided with two base surfaces which are arranged oppositely, at least part of the embossing units on each base paper are recessed from one base surface of the base paper, the other base surface is kept to be flat or raised in the area corresponding to the recessed part, the at least two base paper are bonded into a whole through at least part of the bottom walls of the embossing units, the ratio of the thickness of the bottom walls of the embossing units of the two base paper to the distance between the two base surfaces is 1:3-1:2, the distance between the side walls of the embossing units of the two base paper is gradually reduced along the recessed direction, the composite paper further comprises an adhesive layer, and the adhesive layer is formed between the bottom walls of the corresponding embossing units of the two base paper, the material of the bonding layer is polyvinyl alcohol adhesive or thermosetting cationic resin adhesive, the polyvinyl alcohol adhesive comprises 2-6% of polyvinyl alcohol solid and 85% -95% of water solution, and the thermosetting cationic resin adhesive comprises more than 1% of thermosetting cationic resin solid and 85% -95% of water solution.
2. The composite paper as claimed in claim 1, wherein:
the at least two base layer papers are bonded together through at least part of the bottom wall of the embossing unit, that is, the other basic surface area corresponding to the concave part of the embossing unit of one of the at least two base layer papers is bonded with the other basic surface area corresponding to the concave part of the embossing unit of the other base layer paper, and the other parts are not bonded.
3. The composite paper as claimed in claim 1, wherein:
when at least part of the embossing units on each base paper are recessed from one basic surface of the base paper and the other basic surface of the base paper is protruded from the area corresponding to the recessed part, the thickness of the composite paper is equal to the sum of the overall thicknesses of the at least two base papers, wherein the overall thickness of the base paper is the sum of the distance between the two basic surfaces of the base paper and the height of the embossing units formed on the base paper, which are protruded outwards from one basic surface of the base paper; when at least part of the embossing units on each base paper is recessed from one basic surface of the base paper and the other basic surface is kept as a plane, the thickness of the composite paper is equal to the sum of the distances between the two basic surfaces of the two base papers.
4. An apparatus for making composite paper, the apparatus comprising:
the embossing device comprises two embossing devices and at least two embossing rollers, wherein the two embossing devices are respectively used for embossing two pieces of base layer paper, each embossing device is provided with an embossing roller and an embossing roller which are parallel and opposite to each other, the two embossing rollers of the two embossing devices are parallel and spaced, and the embossing rollers are convexly provided with at least two convex parts;
the embossing roller and the embossing roller are matched to enable the base paper passing between the embossing roller and the embossing roller to generate an embossing pattern, the embossing pattern comprises at least two embossing units, the base paper is provided with two base surfaces which are arranged oppositely, the embossing units are recessed from one base surface of the base paper, the other base surface is kept to be a plane or is raised corresponding to the recessed part, the ratio of the thickness of the bottom wall of the embossing unit of the two base papers to the distance between the two base surfaces is 1:3-1:2, wherein the distance between the side walls of the embossing unit of the two base papers is gradually reduced along the recessed direction, and the central axes of the two embossing rollers and the two embossing rollers are on the same straight line;
a coating device disposed opposite to the embossing roller of one of the embossing devices, and disposed at a side after contacting the embossing roller in a rotation direction of the embossing roller;
the coating device comprises an accommodating groove, a transfer roller and a glue spreader, wherein the accommodating groove is used for accommodating a bonding agent, the transfer roller is used for transferring the bonding agent in the accommodating groove to the glue spreader, the glue spreader is used for coating an adhesive on the surface of one side of the bottom wall of the embossing unit, and the glue spreader is arranged opposite to the embossing roller;
the two embossing rollers of the two embossing devices are matched to enable the two base layer papers passing between the two embossing rollers to be pressed together, so that the two base layer papers are bonded into a whole through at least part of the bottom wall of the embossing unit.
5. The papermaking apparatus of claim 4, wherein:
the embossing rollers of the two embossing devices have the same structure and are provided with convex parts matched with the shapes of the convex embossing units, wherein the convex parts of the embossing roller of one embossing device are opposite to the convex parts of the embossing roller of the other embossing device so as to press the two base layer papers together.
6. A method of manufacturing composite paper, the method comprising the steps of:
providing two base layer papers, wherein each base layer paper comprises two base surfaces which are arranged oppositely;
embossing the two base papers respectively to form an embossing pattern on each base paper, wherein the embossing pattern comprises at least two embossing units, at least part of the embossing units on each base paper are recessed from one basic surface of the base paper, the other basic surface is kept to be flat or raised corresponding to the recessed part, and the ratio of the thickness of the bottom wall of the embossing unit of each base paper to the distance between the two basic surfaces is 1:3-1: 2; the distance between the side walls of the embossing units of the two base layer papers is gradually reduced along the concave direction;
applying glue to the surface of one of the embossed two-base-layer paper, on which the embossing units are formed, so as to coat the bottom wall of the embossing unit with adhesive;
and carrying out pressing treatment on the embossed two base layer paper so as to bond the two base layers into a whole through at least part of the bottom walls of the embossing units.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510616990.6A CN106553384B (en) | 2015-09-24 | 2015-09-24 | Composite paper, manufacturing method thereof and papermaking equipment |
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| CN201510616990.6A CN106553384B (en) | 2015-09-24 | 2015-09-24 | Composite paper, manufacturing method thereof and papermaking equipment |
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| CN106553384A CN106553384A (en) | 2017-04-05 |
| CN106553384B true CN106553384B (en) | 2020-06-05 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2390541Y (en) * | 1999-10-11 | 2000-08-09 | 陆德昌 | Gluing machine for double-side embossing toilet paper processing machine |
| CN1463223A (en) * | 2001-11-22 | 2003-12-24 | Pap星销售有限责任公司及生产两合公司 | Paper towel |
| CN101394992A (en) * | 2006-03-08 | 2009-03-25 | 美特萨纸巾有限公司 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
| CN102555304A (en) * | 2012-01-06 | 2012-07-11 | 金红叶纸业集团有限公司 | Embossing roll set and household paper manufactured by aid of same |
| CN102873913A (en) * | 2012-08-27 | 2013-01-16 | 金红叶纸业集团有限公司 | Method for laminating multilayer paper product and multilayer paper product |
| CN204547204U (en) * | 2015-01-26 | 2015-08-12 | 上海东冠纸业有限公司 | A kind of set composite making embossed household paper |
-
2015
- 2015-09-24 CN CN201510616990.6A patent/CN106553384B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2390541Y (en) * | 1999-10-11 | 2000-08-09 | 陆德昌 | Gluing machine for double-side embossing toilet paper processing machine |
| CN1463223A (en) * | 2001-11-22 | 2003-12-24 | Pap星销售有限责任公司及生产两合公司 | Paper towel |
| CN101394992A (en) * | 2006-03-08 | 2009-03-25 | 美特萨纸巾有限公司 | Embossing device for at least two-layered planar products such as toilet paper, tissues, or similar |
| CN102555304A (en) * | 2012-01-06 | 2012-07-11 | 金红叶纸业集团有限公司 | Embossing roll set and household paper manufactured by aid of same |
| CN102873913A (en) * | 2012-08-27 | 2013-01-16 | 金红叶纸业集团有限公司 | Method for laminating multilayer paper product and multilayer paper product |
| CN204547204U (en) * | 2015-01-26 | 2015-08-12 | 上海东冠纸业有限公司 | A kind of set composite making embossed household paper |
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| CN106553384A (en) | 2017-04-05 |
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Effective date of registration: 20210926 Address after: 468 Xiaowu Avenue, Xiaonan Economic Development Zone, Xiaogan City, Hubei Province 432100 Patentee after: Golden leaf paper (Hubei) Co., Ltd Address before: 468 Xiaowu Avenue, Xiaonan Economic Development Zone, Xiaogan City, Hubei Province 432100 Patentee before: Golden leaf paper (Hubei) Co., Ltd Patentee before: GOLD HONGYE PAPER Group Co.,Ltd. |
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