CN110154482B - Composite material for golden inscription rubbing and preparation method thereof - Google Patents

Composite material for golden inscription rubbing and preparation method thereof Download PDF

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Publication number
CN110154482B
CN110154482B CN201910545350.9A CN201910545350A CN110154482B CN 110154482 B CN110154482 B CN 110154482B CN 201910545350 A CN201910545350 A CN 201910545350A CN 110154482 B CN110154482 B CN 110154482B
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melt index
hot pressing
layer
astm
load
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CN110154482A (en
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刘秋瑞
王伟
张艳萍
吴晓霞
尹志刚
尚展垒
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Zhengzhou University of Light Industry
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Zhengzhou University of Light Industry
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/124—Duplicating or marking methods; Sheet materials for use therein using pressure to make a masked colour visible, e.g. to make a coloured support visible, to create an opaque or transparent pattern, or to form colour by uniting colour-forming components
    • B41M5/1246—Application of the layer, e.g. by printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B32B2250/242—All polymers belonging to those covered by group B32B27/32
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2429/00—Carriers for sound or information

Abstract

The invention discloses a composite material for golden inscription rubbing, which sequentially comprises a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer from bottom to top, wherein the first polyethylene layer has a first melt index, the second polyethylene layer has a second melt index, the third polyethylene layer has a third melt index, the fourth polyethylene layer has a fourth melt index, the first polypropylene layer has a fifth melt index, the second polypropylene layer has a sixth melt index, the third polypropylene layer has a seventh melt index, the fourth polypropylene layer has an eighth melt index, the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, and the fourth melt index is greater than the eighth melt index. The composite material has good tear resistance, high heat sealing strength and low delamination risk.

Description

Composite material for golden inscription rubbing and preparation method thereof
Technical Field
The invention relates to the technical field of golden text rubbing, in particular to a composite material for golden text rubbing and a preparation method thereof.
Background
Rubbing is a manual reproduction of an engraved or stone surface by tightly covering a piece of paper over the work and rubbing with black or colored material. The traditional rubbing material is rice paper and a block black material called rubbing wax. Sometimes, especially when fine lines are to be rubbed, it is preferable to use an alternative method, in which a powdered graphite is oiled to a certain dry hardness and then applied to the paper with an ink applicator.
The gold is the abbreviation of "Jijin character" and mainly refers to the characters cast (or engraved) on the copper ware, and because the ancient name is copper and gold, the characters on the copper ware are called gold. In bronze instruments, the gift is represented by a tripod and the musical instrument is represented by a clock, so the golden language is also called as "tripod language". In the eastern Majia kiln of Gansu province, Qijia cultural relics, and Longshan cultural relics and graves of Hebei, Henan, Shanxi and Shandong of 4000 years from China, agricultural implements such as knives, axes, cones and chisels made of red copper and bronze have been found. After the generation, bronze casting technology has been developed greatly. In the ancient ruins of Shandong-Dynasty Shandong Dynasty, many kinds of bronze vessels such as ancient cooking vessel, ancient cooking vessel, ancient cooking vessel, ancient cooking vessel, ancient cooking. The number of golden words is totally 3722 according to the record of "golden article compilation" of the chapter "jin", and 2420 characters can be recognized in the golden words. With the mass emergence of new materials and the continuous updating of research results, the literacy in the golden texts is increasing. The commercial week bronze wares come out of the earth in tens of thousands, and nearly twenty thousands of the bronze wares are loaded with inscriptions. However, in the period from Han to Tang, about one thousand, two hundred years, the total number of recorded copper ware unearthed is less than twenty, and not only a few stars but also no inscription is copied. The continuous updating of the research result of the golden language also depends on the maturity of the text rubbing technology, and the good text rubbing can well show the overall appearance of characters, so that people can distinguish weathered denudation and rusty spot covering traces.
The prior art CN105513054B discloses a rubbing method based on three-dimensional scanning, which includes the following steps: s1, point cloud data collected by a three-dimensional scanner; s2, processing the data obtained in the step S1, eliminating the bottom surface acquired in the step S1, and obtaining three-dimensional datum plane data; s3, constructing a two-dimensional matrix using the datum plane data obtained in the step S2, the two-dimensional matrix being used for storing data in the datum plane data, wherein each pixel in the two-dimensional matrix represents one datum; and S4, mapping the spatial depth information of the reference plane data obtained in the step S2 to the two-dimensional matrix. The invention utilizes the characteristics of the scanned data to calculate and manufacture the digital rubbing picture, can extract the outline information of the characters at the root of the matrix and restore the three-dimensional data into the two-dimensional copybook.
Prior art CN104191849B discloses a dry heat resistant rubbing paper, which comprises an autopsy paper layer, a protective film layer, a silica gel layer, an adhesive layer, and a release protective film layer, wherein the protective film layer is located at the top of the rubbing paper and is pasted and covered on the autopsy paper layer, the back of the autopsy paper layer is coated with the adhesive layer, and the surface of the adhesive layer is coated with the release protective film layer.
Prior art CN206840879U discloses a buffer film comprising a first metallocene polyethylene layer, a first C8 linear low density polyethylene layer, a first adhesive layer, a nylon layer, a second adhesive layer, a second C8 linear low density polyethylene layer, a third C8 linear low density polyethylene layer, a fourth C8 linear low density polyethylene layer and a second metallocene polyethylene layer. The buffer film provided by the scheme uses C8 linear low density polyethylene which can play a role in enhancing the elongation of the buffer film, and C8 linear low density polyethylene is resin produced by using long-chain alpha-olefin (octene) as a comonomer.
The prior art CN102225644A provides a heat-sealing film, which comprises a first polyethylene layer, a first metallocene polypropylene layer and a polypropylene layer, which are sequentially contacted, wherein the first metallocene polypropylene layer comprises not less than 25% by mass of metallocene ethylene propylene copolymer.
Prior art CN104755266A discloses multilayer films comprising four or more discrete layers. The film contains two outer layers, an inner stiffening layer and an inner shrink layer. The outer layer comprises a linear low density polyethylene resin, the stiffening layer comprises polypropylene or high density polyethylene, and the shrink layer comprises low density polyethylene.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The object of the present invention is to provide a composite material for a golden print which overcomes the drawbacks of the prior art.
To achieve the above object, the present invention provides a composite material for a inscription rubbing, comprising, in order from bottom to top, a first polyethylene layer having a first melt index measured at 190 ℃ and under a load of 2.16kg according to ASTM-D-1238, a second polyethylene layer having a second melt index measured at 190 ℃ and under a load of 2.16kg according to ASTM-D-1238, a third polyethylene layer having a third melt index measured at 190 ℃ and under a load of 2.16kg according to ASTM-D-1238, a fourth polyethylene layer having a fourth melt index measured at 190 ℃ and under a load of 2.16kg according to ASTM-D-1238, the first polypropylene layer has a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index.
In a preferred embodiment, the first melt index is 25 to 35g/10min, the second melt index is 20 to 30g/10min, the third melt index is 20 to 30g/10min, and the fourth melt index is 25 to 35g/10 min.
In a preferred embodiment, the fifth melt index is 15 to 25g/10min, the sixth melt index is 5 to 15g/10min, the seventh melt index is 5 to 15g/10min, and the eighth melt index is 15 to 25g/10 min.
In a preferred embodiment, the first melt index is equal to the fourth melt index, and the second melt index is equal to the third melt index.
In a preferred embodiment, the difference between the first melt index and the fifth melt index is less than 15g/10min, and the difference between the second melt index and the sixth melt index is less than 20g/10 min.
In a preferred embodiment, the difference between the third melt index and the seventh melt index is less than 20g/10min, and the difference between the fourth melt index and the eighth melt index is less than 15g/10 min.
In a preferred embodiment, the fifth melt index is equal to the eighth melt index and the sixth melt index is equal to the seventh melt index.
The invention provides a preparation method of the composite material for the golden inscription rubbing, which is characterized by comprising the following steps: the method comprises the following steps:
sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body;
and carrying out hot pressing on the laminated body.
In a preferred embodiment, hot pressing the stacked body includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 145-155 ℃, the hot pressing pressure is 3-5MPa, and the hot pressing time is 10-20 min; performing second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 170-; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 180-.
Compared with the prior art, the invention has the following advantages: at present, in the process of golden inscription rubbing, a wood board or a common metal plate is generally used as a base plate, but the wood board is not easy to clean in the rubbing process, ink marks rubbed in the previous time can be stained on subsequent rubbing paper, and the rubbing effect is influenced. The metal plate, although easy to clean, is susceptible to corrosion, which may cause metal particles that corrode during the rubbing process to stick to the rubbing paper, which also affects the rubbing effect. The invention provides a rubbing composite material with a polymer surface coating film. Meanwhile, the composite material has good tear resistance, so that the rubbing pressure can not tear the surface covering film in the rubbing process, and meanwhile, the composite material has high heat sealing strength, and the structure has small risk of delamination and strong durability.
Drawings
Fig. 1 is a schematic structural view of a composite material for a golden print according to an embodiment of the present invention.
Fig. 2 is an SEM image of the upper surface of the composite material for the golden print according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component. The peel strength (in N/m) is tested according to the procedure described in ASTM F88, see www.astm.org for ASTM test methods.
Fig. 1 is a schematic structural view of a composite material for a golden print according to an embodiment of the present invention. Fig. 2 is an SEM image of the upper surface of the composite material (i.e., the outward surface of the fourth polyethylene layer 109) for the golden inscription according to an embodiment of the present invention (prepared according to the process described in example 1, described later). As shown in the figure, the composite material for inscription rubbing of the present invention comprises, from bottom to top, a first polyethylene layer 101, a first polypropylene layer 102, a second polyethylene layer 103, a second polypropylene layer 104, a third polyethylene layer 105, a third polypropylene layer 106, a fourth polypropylene layer 107 and a fourth polyethylene layer 108. The use method of the composite material comprises the steps of attaching the common paper to the prepared composite material, then placing the composite material on a traditional backing plate (a wood plate, a metal plate or a stone plate), and then rubbing.
Example 1
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 25g/10min, the second melt index is 20g/10min, the third melt index is 20g/10min, and the fourth melt index is 25g/10 min. Wherein the fifth melt index is 15g/10min, the sixth melt index is 5g/10min, the seventh melt index is 5g/10min, and the eighth melt index is 15g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 145 ℃, the hot pressing pressure is 3MPa, and the hot pressing time is 10 min; performing second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 170 ℃, the hot pressing pressure is 10MPa, and the hot pressing time is 25 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 180 ℃, the hot pressing pressure is 10MPa, and the hot pressing time is 25 min. This example tested a peel strength of 7000N/m according to the method described in ASTM F88 and a tear resistance of 6000mN according to ASTM D1922.
Example 2
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 35g/10min, the second melt index is 30g/10min, the third melt index is 30g/10min, and the fourth melt index is 35g/10 min. Wherein the fifth melt index is 25g/10min, the sixth melt index is 15g/10min, the seventh melt index is 15g/10min, and the eighth melt index is 25g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using first parameters, wherein the first parameters are that the hot pressing temperature is 155 ℃, the hot pressing pressure is 5MPa, and the hot pressing time is 20 min; performing second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 180 ℃, the hot pressing pressure is 20MPa, and the hot pressing time is 35 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 195 ℃, the hot pressing pressure is 20MPa, and the hot pressing time is 35 min. This example measured a peel strength of 7300N/m according to the procedure described in ASTM F88 and a tear resistance of 6200mN according to ASTM D1922.
Example 3
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 30g/10min, the second melt index is 25g/10min, the third melt index is 25g/10min, and the fourth melt index is 30g/10 min. Wherein the fifth melt index is 20g/10min, the sixth melt index is 10g/10min, the seventh melt index is 10g/10min, and the eighth melt index is 20g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 150 ℃, the hot pressing pressure is 4MPa, and the hot pressing time is 15 min; carrying out second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 175 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 190 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min. This example tested a peel strength of 7500N/m according to the method described in ASTM F88 and a tear resistance of 6400mN according to ASTM D1922.
Comparative example 1
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 40g/10min, the second melt index is 15g/10min, the third melt index is 15g/10min, and the fourth melt index is 40g/10 min. Wherein the fifth melt index is 20g/10min, the sixth melt index is 10g/10min, the seventh melt index is 10g/10min, and the eighth melt index is 20g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 150 ℃, the hot pressing pressure is 4MPa, and the hot pressing time is 15 min; carrying out second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 175 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 190 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min. This example tested a peel strength of 4000N/m according to the method described in ASTM F88 and tear resistance data of 3500mN according to ASTM D1922.
Comparative example 2
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 35g/10min, the second melt index is 30g/10min, the third melt index is 30g/10min, and the fourth melt index is 35g/10 min. Wherein the fifth melt index is 15g/10min, the sixth melt index is 5g/10min, the seventh melt index is 5g/10min, and the eighth melt index is 15g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 150 ℃, the hot pressing pressure is 4MPa, and the hot pressing time is 15 min; carrying out second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 175 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 190 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min. This example measured a peel strength of 4300N/m according to the method described in ASTM F88 and a tear resistance of 3200mN according to ASTM D1922.
Comparative example 3
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 30g/10min, the second melt index is 25g/10min, the third melt index is 25g/10min, and the fourth melt index is 30g/10 min. Wherein the fifth melt index is 30g/10min, the sixth melt index is 20g/10min, the seventh melt index is 20g/10min, and the eighth melt index is 30g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 150 ℃, the hot pressing pressure is 4MPa, and the hot pressing time is 15 min; carrying out second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 175 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 190 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 30 min. This example tested for peel strength of 4600N/m according to the method described in ASTM F88 and 3500mN as tear resistance data according to ASTM D1922.
Comparative example 4
A composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a first polypropylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polypropylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a load of 2.16kg, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a load of 2.16kg, the second polypropylene layer has a sixth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer has a seventh melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer has an eighth melt index determined according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, and the seventh melt index is less than the eighth melt index. Wherein the first melt index is 30g/10min, the second melt index is 25g/10min, the third melt index is 25g/10min, and the fourth melt index is 30g/10 min. Wherein the fifth melt index is 20g/10min, the sixth melt index is 10g/10min, the seventh melt index is 10g/10min, and the eighth melt index is 20g/10 min. The preparation method of the composite material for the golden inscription rubbing comprises the following steps: sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and carrying out hot pressing on the laminated body. Hot pressing the laminate includes: carrying out first-stage hot pressing on the laminated body by using a first parameter, wherein the first parameter is that the hot pressing temperature is 160 ℃, the hot pressing pressure is 6MPa, and the hot pressing time is 25 min; carrying out second-stage hot pressing on the laminated body by using a second parameter, wherein the second parameter is that the hot pressing temperature is 185 ℃, the hot pressing pressure is 25MPa, and the hot pressing time is 40 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 200 ℃, the hot pressing pressure is 25MPa, and the hot pressing time is 40 min. This example has a peel strength of 4100N/m according to the method described in ASTM F88 and a tear resistance of 2900mN according to ASTM D1922.
In conclusion, the composite material disclosed by the invention is good in tear resistance, so that the rubbing pressure can not tear the surface coating film in the rubbing process, meanwhile, the composite material disclosed by the invention is high in heat-seal strength, the structure disclosed by the invention is low in delamination risk, and the durability is strong.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (1)

1. A composite material for a goldfish rubbing, characterized by: the composite for inscription rubbing comprises, in order from bottom to top, a first polyethylene layer having a first melt index determined according to ASTM-D-1238 at 190 ℃ and under a 2.16kg load, a second polyethylene layer having a second melt index determined according to ASTM-D-1238 at 190 ℃ and under a 2.16kg load, a third polyethylene layer having a third melt index determined according to ASTM-D-1238 at 190 ℃ and under a 2.16kg load, a fourth polyethylene layer having a fourth melt index determined according to ASTM-D-1238 at 190 ℃ and under a 2.16kg load, the first polypropylene layer having a fifth melt index determined according to ASTM-D-1238 at 230 ℃ and under a 2.16kg load, the second polypropylene layer having a sixth melt index measured according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the third polypropylene layer having a seventh melt index measured according to ASTM-D-1238 at 230 ℃ and 2.16kg load, the fourth polypropylene layer having an eighth melt index measured according to ASTM-D-1238 at 230 ℃ and 2.16kg load, wherein the first melt index is greater than the fifth melt index, the second melt index is greater than the sixth melt index, the third melt index is greater than the seventh melt index, the fourth melt index is greater than the eighth melt index, the seventh melt index is less than the eighth melt index, wherein the first melt index is 25-35g/10min and the second melt index is 20-30g/10min, the third melt index is 20-30g/10min, the fourth melt index is 25-35g/10min, wherein the fifth melt index is 15-25g/10min, the sixth melt index is 5-15g/10min, the seventh melt index is 5-15g/10min, the eighth melt index is 15-25g/10min, wherein the first melt index is equal to the fourth melt index, the second melt index is equal to the third melt index, wherein the difference between the first melt index and the fifth melt index is less than 15g/10min, the difference between the second melt index and the sixth melt index is less than 20g/10min, wherein the difference between the third melt index and the seventh melt index is less than 20g/10min, the difference between the fourth melt index and the eighth melt index is less than 15g/10min, wherein the fifth melt index is equal to the eighth melt index and the sixth melt index is equal to the seventh melt index,
the composite material for the golden inscription rubbing is prepared by the following steps:
sequentially laminating a first polyethylene layer, a first polypropylene layer, a second polyethylene layer, a second polypropylene layer, a third polyethylene layer, a third polypropylene layer, a fourth polypropylene layer and a fourth polyethylene layer to obtain a laminated body; and
hot-pressing the laminate, the hot-pressing the laminate comprising: carrying out first-stage hot pressing on the laminated body by using first parameters, wherein the first parameters are that the hot pressing temperature is 145-155 ℃, the hot pressing pressure is 3-5MPa, and the hot pressing time is 10-20 min; performing second-stage hot pressing on the laminated body by using second parameters, wherein the second parameters are that the hot pressing temperature is 170-180 ℃, the hot pressing pressure is 10-20MPa, and the hot pressing time is 25-35 min; and carrying out third-stage hot pressing on the laminated body by using a third parameter, wherein the third parameter is that the hot pressing temperature is 180-.
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